st.c 90 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191201211221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771781791801811821831841851861871881891901911921931941951961971981992002012022032042052062072082092102112122132142152162172182192202212222232242252262272282292302312322332342352362372382392402412422432442452462472482492502512522532542552562572582592602612622632642652662672682692702712722732742752762772782792802812822832842852862872882892902912922932942952962972982993003013023033043053063073083093103113123133143153163173183193203213223233243253263273283293303313323333343353363373383393403413423433443453463473483493503513523533543553563573583593603613623633643653663673683693703713723733743753763773783793803813823833843853863873883893903913923933943953963973983994004014024034044054064074084094104114124134144154164174184194204214224234244254264274284294304314324334344354364374384394404414424434444454464474484494504514524534544554564574584594604614624634644654664674684694704714724734744754764774784794804814824834844854864874884894904914924934944954964974984995005015025035045055065075085095105115125135145155165175185195205215225235245255265275285295305315325335345355365375385395405415425435445455465475485495505515525535545555565575585595605615625635645655665675685695705715725735745755765775785795805815825835845855865875885895905915925935945955965975985996006016026036046056066076086096106116126136146156166176186196206216226236246256266276286296306316326336346356366376386396406416426436446456466476486496506516526536546556566576586596606616626636646656666676686696706716726736746756766776786796806816826836846856866876886896906916926936946956966976986997007017027037047057067077087097107117127137147157167177187197207217227237247257267277287297307317327337347357367377387397407417427437447457467477487497507517527537547557567577587597607617627637647657667677687697707717727737747757767777787797807817827837847857867877887897907917927937947957967977987998008018028038048058068078088098108118128138148158168178188198208218228238248258268278288298308318328338348358368378388398408418428438448458468478488498508518528538548558568578588598608618628638648658668678688698708718728738748758768778788798808818828838848858868878888898908918928938948958968978988999009019029039049059069079089099109119129139149159169179189199209219229239249259269279289299309319329339349359369379389399409419429439449459469479489499509519529539549559569579589599609619629639649659669679689699709719729739749759769779789799809819829839849859869879889899909919929939949959969979989991000100110021003100410051006100710081009101010111012101310141015101610171018101910201021102210231024102510261027102810291030103110321033103410351036103710381039104010411042104310441045104610471048104910501051105210531054105510561057105810591060106110621063106410651066106710681069107010711072107310741075107610771078107910801081108210831084108510861087108810891090109110921093109410951096109710981099110011011102110311041105110611071108110911101111111211131114111511161117111811191120112111221123112411251126112711281129113011311132113311341135113611371138113911401141114211431144114511461147114811491150115111521153115411551156115711581159116011611162116311641165116611671168116911701171117211731174117511761177117811791180118111821183118411851186118711881189119011911192119311941195119611971198119912001201120212031204120512061207120812091210121112121213121412151216121712181219122012211222122312241225122612271228122912301231123212331234123512361237123812391240124112421243124412451246124712481249125012511252125312541255125612571258125912601261126212631264126512661267126812691270127112721273127412751276127712781279128012811282128312841285128612871288128912901291129212931294129512961297129812991300130113021303130413051306130713081309131013111312131313141315131613171318131913201321132213231324132513261327132813291330133113321333133413351336133713381339134013411342134313441345134613471348134913501351135213531354135513561357135813591360136113621363136413651366136713681369137013711372137313741375137613771378137913801381138213831384138513861387138813891390139113921393139413951396139713981399140014011402140314041405140614071408140914101411141214131414141514161417141814191420142114221423142414251426142714281429143014311432143314341435143614371438143914401441144214431444144514461447144814491450145114521453145414551456145714581459146014611462146314641465146614671468146914701471147214731474147514761477147814791480148114821483148414851486148714881489149014911492149314941495149614971498149915001501150215031504150515061507150815091510151115121513151415151516151715181519152015211522152315241525152615271528152915301531153215331534153515361537153815391540154115421543154415451546154715481549155015511552155315541555155615571558155915601561156215631564156515661567156815691570157115721573157415751576157715781579158015811582158315841585158615871588158915901591159215931594159515961597159815991600160116021603160416051606160716081609161016111612161316141615161616171618161916201621162216231624162516261627162816291630163116321633163416351636163716381639164016411642164316441645164616471648164916501651165216531654165516561657165816591660166116621663166416651666166716681669167016711672167316741675167616771678167916801681168216831684168516861687168816891690169116921693169416951696169716981699170017011702170317041705170617071708170917101711171217131714171517161717171817191720172117221723172417251726172717281729173017311732173317341735173617371738173917401741174217431744174517461747174817491750175117521753175417551756175717581759176017611762176317641765176617671768176917701771177217731774177517761777177817791780178117821783178417851786178717881789179017911792179317941795179617971798179918001801180218031804180518061807180818091810181118121813181418151816181718181819182018211822182318241825182618271828182918301831183218331834183518361837183818391840184118421843184418451846184718481849185018511852185318541855185618571858185918601861186218631864186518661867186818691870187118721873187418751876187718781879188018811882188318841885188618871888188918901891189218931894189518961897189818991900190119021903190419051906190719081909191019111912191319141915191619171918191919201921192219231924192519261927192819291930193119321933193419351936193719381939194019411942194319441945194619471948194919501951195219531954195519561957195819591960196119621963196419651966196719681969197019711972197319741975197619771978197919801981198219831984198519861987198819891990199119921993199419951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017201820192020202120222023202420252026202720282029203020312032203320342035203620372038203920402041204220432044204520462047204820492050205120522053205420552056205720582059206020612062206320642065206620672068206920702071207220732074207520762077207820792080208120822083208420852086208720882089209020912092209320942095209620972098209921002101210221032104210521062107210821092110211121122113211421152116211721182119212021212122212321242125212621272128212921302131213221332134213521362137213821392140214121422143214421452146214721482149215021512152215321542155215621572158215921602161216221632164216521662167216821692170217121722173217421752176217721782179218021812182218321842185218621872188218921902191219221932194219521962197219821992200220122022203220422052206220722082209221022112212221322142215221622172218221922202221222222232224222522262227222822292230223122322233223422352236223722382239224022412242224322442245224622472248224922502251225222532254225522562257225822592260226122622263226422652266226722682269227022712272227322742275227622772278227922802281228222832284228522862287228822892290229122922293229422952296229722982299230023012302230323042305230623072308230923102311231223132314231523162317231823192320232123222323232423252326232723282329233023312332233323342335233623372338233923402341234223432344234523462347234823492350235123522353235423552356235723582359236023612362236323642365236623672368236923702371237223732374237523762377237823792380238123822383238423852386238723882389239023912392239323942395239623972398239924002401240224032404240524062407240824092410241124122413241424152416241724182419242024212422242324242425242624272428242924302431243224332434243524362437243824392440244124422443244424452446244724482449245024512452245324542455245624572458245924602461246224632464246524662467246824692470247124722473247424752476247724782479248024812482248324842485248624872488248924902491249224932494249524962497249824992500250125022503250425052506250725082509251025112512251325142515251625172518251925202521252225232524252525262527252825292530253125322533253425352536253725382539254025412542254325442545254625472548254925502551255225532554255525562557255825592560256125622563256425652566256725682569257025712572257325742575257625772578257925802581258225832584258525862587258825892590259125922593259425952596259725982599260026012602260326042605260626072608260926102611261226132614261526162617261826192620262126222623262426252626262726282629263026312632263326342635263626372638263926402641264226432644264526462647264826492650265126522653265426552656265726582659266026612662266326642665266626672668266926702671267226732674267526762677267826792680268126822683268426852686268726882689269026912692269326942695269626972698269927002701270227032704270527062707270827092710271127122713271427152716271727182719272027212722272327242725272627272728272927302731273227332734273527362737273827392740274127422743274427452746274727482749275027512752275327542755275627572758275927602761276227632764276527662767276827692770277127722773277427752776277727782779278027812782278327842785278627872788278927902791279227932794279527962797279827992800280128022803280428052806280728082809281028112812281328142815281628172818281928202821282228232824282528262827282828292830283128322833283428352836283728382839284028412842284328442845284628472848284928502851285228532854285528562857285828592860286128622863286428652866286728682869287028712872287328742875287628772878287928802881288228832884288528862887288828892890289128922893289428952896289728982899290029012902290329042905290629072908290929102911291229132914291529162917291829192920292129222923292429252926292729282929293029312932293329342935293629372938293929402941294229432944294529462947294829492950295129522953295429552956295729582959296029612962296329642965296629672968296929702971297229732974297529762977297829792980298129822983298429852986298729882989299029912992299329942995299629972998299930003001300230033004300530063007300830093010301130123013301430153016301730183019302030213022302330243025302630273028302930303031303230333034303530363037303830393040304130423043304430453046304730483049305030513052305330543055305630573058305930603061306230633064306530663067306830693070307130723073307430753076307730783079308030813082308330843085308630873088308930903091309230933094309530963097309830993100310131023103310431053106310731083109311031113112311331143115311631173118311931203121312231233124312531263127312831293130313131323133313431353136313731383139314031413142314331443145314631473148314931503151315231533154315531563157315831593160316131623163316431653166316731683169317031713172317331743175317631773178317931803181318231833184318531863187318831893190319131923193319431953196319731983199320032013202320332043205320632073208320932103211321232133214321532163217321832193220322132223223322432253226322732283229323032313232323332343235323632373238323932403241324232433244324532463247324832493250325132523253325432553256325732583259326032613262326332643265326632673268326932703271327232733274327532763277327832793280328132823283328432853286328732883289329032913292329332943295329632973298329933003301330233033304330533063307330833093310331133123313331433153316331733183319332033213322332333243325332633273328332933303331333233333334333533363337333833393340334133423343334433453346334733483349335033513352335333543355335633573358335933603361336233633364336533663367336833693370337133723373337433753376337733783379338033813382338333843385338633873388338933903391339233933394339533963397339833993400340134023403340434053406340734083409341034113412341334143415341634173418341934203421342234233424342534263427342834293430343134323433343434353436343734383439344034413442344334443445344634473448344934503451345234533454345534563457345834593460346134623463346434653466346734683469347034713472347334743475347634773478347934803481348234833484348534863487348834893490349134923493349434953496349734983499350035013502350335043505350635073508350935103511351235133514351535163517351835193520352135223523352435253526352735283529353035313532353335343535353635373538353935403541354235433544354535463547354835493550355135523553355435553556355735583559356035613562356335643565356635673568356935703571357235733574357535763577357835793580358135823583358435853586358735883589359035913592359335943595359635973598359936003601360236033604360536063607360836093610361136123613361436153616361736183619362036213622362336243625362636273628362936303631363236333634363536363637363836393640364136423643364436453646364736483649365036513652365336543655365636573658365936603661366236633664366536663667366836693670367136723673367436753676367736783679368036813682368336843685368636873688368936903691369236933694369536963697369836993700370137023703370437053706370737083709371037113712371337143715371637173718371937203721372237233724372537263727372837293730373137323733373437353736373737383739374037413742374337443745374637473748374937503751375237533754375537563757375837593760376137623763376437653766376737683769377037713772377337743775377637773778377937803781378237833784378537863787378837893790379137923793379437953796379737983799380038013802380338043805380638073808380938103811381238133814381538163817381838193820382138223823382438253826382738283829383038313832383338343835383638373838383938403841384238433844384538463847384838493850385138523853385438553856385738583859386038613862386338643865386638673868386938703871387238733874387538763877387838793880388138823883388438853886388738883889389038913892389338943895389638973898389939003901390239033904390539063907390839093910391139123913391439153916391739183919392039213922392339243925392639273928392939303931393239333934393539363937393839393940394139423943394439453946394739483949395039513952395339543955395639573958395939603961396239633964396539663967396839693970397139723973397439753976397739783979398039813982398339843985398639873988398939903991399239933994399539963997399839994000400140024003400440054006400740084009401040114012401340144015401640174018401940204021402240234024402540264027402840294030403140324033403440354036403740384039404040414042404340444045404640474048404940504051405240534054405540564057405840594060406140624063406440654066406740684069407040714072407340744075407640774078407940804081408240834084408540864087
  1. /* See LICENSE for licence details. */
  2. #include <ctype.h>
  3. #include <errno.h>
  4. #include <fcntl.h>
  5. #include <limits.h>
  6. #include <locale.h>
  7. #include <pwd.h>
  8. #include <stdarg.h>
  9. #include <stdbool.h>
  10. #include <stdio.h>
  11. #include <stdlib.h>
  12. #include <string.h>
  13. #include <signal.h>
  14. #include <stdint.h>
  15. #include <sys/ioctl.h>
  16. #include <sys/select.h>
  17. #include <sys/stat.h>
  18. #include <sys/time.h>
  19. #include <sys/types.h>
  20. #include <sys/wait.h>
  21. #include <time.h>
  22. #include <unistd.h>
  23. #include <libgen.h>
  24. #include <X11/Xatom.h>
  25. #include <X11/Xlib.h>
  26. #include <X11/Xutil.h>
  27. #include <X11/cursorfont.h>
  28. #include <X11/keysym.h>
  29. #include <X11/Xft/Xft.h>
  30. #include <X11/XKBlib.h>
  31. #include <fontconfig/fontconfig.h>
  32. #include <wchar.h>
  33. #include "arg.h"
  34. char *argv0;
  35. #define Glyph Glyph_
  36. #define Font Font_
  37. #if defined(__linux)
  38. #include <pty.h>
  39. #elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
  40. #include <util.h>
  41. #elif defined(__FreeBSD__) || defined(__DragonFly__)
  42. #include <libutil.h>
  43. #endif
  44. /* XEMBED messages */
  45. #define XEMBED_FOCUS_IN 4
  46. #define XEMBED_FOCUS_OUT 5
  47. /* Arbitrary sizes */
  48. #define UTF_INVALID 0xFFFD
  49. #define UTF_SIZ 4
  50. #define ESC_BUF_SIZ (128*UTF_SIZ)
  51. #define ESC_ARG_SIZ 16
  52. #define STR_BUF_SIZ ESC_BUF_SIZ
  53. #define STR_ARG_SIZ ESC_ARG_SIZ
  54. #define DRAW_BUF_SIZ 20*1024
  55. #define XK_ANY_MOD UINT_MAX
  56. #define XK_NO_MOD 0
  57. #define XK_SWITCH_MOD (1<<13)
  58. /* macros */
  59. #define MIN(a, b) ((a) < (b) ? (a) : (b))
  60. #define MAX(a, b) ((a) < (b) ? (b) : (a))
  61. #define LEN(a) (sizeof(a) / sizeof(a)[0])
  62. #define DEFAULT(a, b) (a) = (a) ? (a) : (b)
  63. #define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
  64. #define ISCONTROLC0(c) (BETWEEN(c, 0, 0x1f) || (c) == '\177')
  65. #define ISCONTROLC1(c) (BETWEEN(c, 0x80, 0x9f))
  66. #define ISCONTROL(c) (ISCONTROLC0(c) || ISCONTROLC1(c))
  67. #define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
  68. #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
  69. #define IS_SET(flag) ((term.mode & (flag)) != 0)
  70. #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_nsec-t2.tv_nsec)/1E6)
  71. #define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))
  72. #define TRUECOLOR(r,g,b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
  73. #define IS_TRUECOL(x) (1 << 24 & (x))
  74. #define TRUERED(x) (((x) & 0xff0000) >> 8)
  75. #define TRUEGREEN(x) (((x) & 0xff00))
  76. #define TRUEBLUE(x) (((x) & 0xff) << 8)
  77. enum glyph_attribute {
  78. ATTR_NULL = 0,
  79. ATTR_BOLD = 1 << 0,
  80. ATTR_FAINT = 1 << 1,
  81. ATTR_ITALIC = 1 << 2,
  82. ATTR_UNDERLINE = 1 << 3,
  83. ATTR_BLINK = 1 << 4,
  84. ATTR_REVERSE = 1 << 5,
  85. ATTR_INVISIBLE = 1 << 6,
  86. ATTR_STRUCK = 1 << 7,
  87. ATTR_WRAP = 1 << 8,
  88. ATTR_WIDE = 1 << 9,
  89. ATTR_WDUMMY = 1 << 10,
  90. };
  91. enum cursor_movement {
  92. CURSOR_SAVE,
  93. CURSOR_LOAD
  94. };
  95. enum cursor_state {
  96. CURSOR_DEFAULT = 0,
  97. CURSOR_WRAPNEXT = 1,
  98. CURSOR_ORIGIN = 2
  99. };
  100. enum term_mode {
  101. MODE_WRAP = 1 << 0,
  102. MODE_INSERT = 1 << 1,
  103. MODE_APPKEYPAD = 1 << 2,
  104. MODE_ALTSCREEN = 1 << 3,
  105. MODE_CRLF = 1 << 4,
  106. MODE_MOUSEBTN = 1 << 5,
  107. MODE_MOUSEMOTION = 1 << 6,
  108. MODE_REVERSE = 1 << 7,
  109. MODE_KBDLOCK = 1 << 8,
  110. MODE_HIDE = 1 << 9,
  111. MODE_ECHO = 1 << 10,
  112. MODE_APPCURSOR = 1 << 11,
  113. MODE_MOUSESGR = 1 << 12,
  114. MODE_8BIT = 1 << 13,
  115. MODE_BLINK = 1 << 14,
  116. MODE_FBLINK = 1 << 15,
  117. MODE_FOCUS = 1 << 16,
  118. MODE_MOUSEX10 = 1 << 17,
  119. MODE_MOUSEMANY = 1 << 18,
  120. MODE_BRCKTPASTE = 1 << 19,
  121. MODE_PRINT = 1 << 20,
  122. MODE_MOUSE = MODE_MOUSEBTN|MODE_MOUSEMOTION|MODE_MOUSEX10\
  123. |MODE_MOUSEMANY,
  124. };
  125. enum charset {
  126. CS_GRAPHIC0,
  127. CS_GRAPHIC1,
  128. CS_UK,
  129. CS_USA,
  130. CS_MULTI,
  131. CS_GER,
  132. CS_FIN
  133. };
  134. enum escape_state {
  135. ESC_START = 1,
  136. ESC_CSI = 2,
  137. ESC_STR = 4, /* DCS, OSC, PM, APC */
  138. ESC_ALTCHARSET = 8,
  139. ESC_STR_END = 16, /* a final string was encountered */
  140. ESC_TEST = 32, /* Enter in test mode */
  141. };
  142. enum window_state {
  143. WIN_VISIBLE = 1,
  144. WIN_REDRAW = 2,
  145. WIN_FOCUSED = 4
  146. };
  147. enum selection_type {
  148. SEL_REGULAR = 1,
  149. SEL_RECTANGULAR = 2
  150. };
  151. enum selection_snap {
  152. SNAP_WORD = 1,
  153. SNAP_LINE = 2
  154. };
  155. typedef unsigned char uchar;
  156. typedef unsigned int uint;
  157. typedef unsigned long ulong;
  158. typedef unsigned short ushort;
  159. typedef XftDraw *Draw;
  160. typedef XftColor Color;
  161. typedef struct {
  162. char c[UTF_SIZ]; /* character code */
  163. ushort mode; /* attribute flags */
  164. uint32_t fg; /* foreground */
  165. uint32_t bg; /* background */
  166. } Glyph;
  167. typedef Glyph *Line;
  168. typedef struct {
  169. Glyph attr; /* current char attributes */
  170. int x;
  171. int y;
  172. char state;
  173. } TCursor;
  174. /* CSI Escape sequence structs */
  175. /* ESC '[' [[ [<priv>] <arg> [;]] <mode> [<mode>]] */
  176. typedef struct {
  177. char buf[ESC_BUF_SIZ]; /* raw string */
  178. int len; /* raw string length */
  179. char priv;
  180. int arg[ESC_ARG_SIZ];
  181. int narg; /* nb of args */
  182. char mode[2];
  183. } CSIEscape;
  184. /* STR Escape sequence structs */
  185. /* ESC type [[ [<priv>] <arg> [;]] <mode>] ESC '\' */
  186. typedef struct {
  187. char type; /* ESC type ... */
  188. char buf[STR_BUF_SIZ]; /* raw string */
  189. int len; /* raw string length */
  190. char *args[STR_ARG_SIZ];
  191. int narg; /* nb of args */
  192. } STREscape;
  193. /* Internal representation of the screen */
  194. typedef struct {
  195. int row; /* nb row */
  196. int col; /* nb col */
  197. Line *line; /* screen */
  198. Line *alt; /* alternate screen */
  199. bool *dirty; /* dirtyness of lines */
  200. TCursor c; /* cursor */
  201. int top; /* top scroll limit */
  202. int bot; /* bottom scroll limit */
  203. int mode; /* terminal mode flags */
  204. int esc; /* escape state flags */
  205. char trantbl[4]; /* charset table translation */
  206. int charset; /* current charset */
  207. int icharset; /* selected charset for sequence */
  208. bool numlock; /* lock numbers in keyboard */
  209. bool *tabs;
  210. } Term;
  211. /* Purely graphic info */
  212. typedef struct {
  213. Display *dpy;
  214. Colormap cmap;
  215. Window win;
  216. Drawable buf;
  217. Atom xembed, wmdeletewin, netwmname, netwmpid;
  218. XIM xim;
  219. XIC xic;
  220. Draw draw;
  221. Visual *vis;
  222. XSetWindowAttributes attrs;
  223. int scr;
  224. bool isfixed; /* is fixed geometry? */
  225. int l, t; /* left and top offset */
  226. int gm; /* geometry mask */
  227. int tw, th; /* tty width and height */
  228. int w, h; /* window width and height */
  229. int ch; /* char height */
  230. int cw; /* char width */
  231. char state; /* focus, redraw, visible */
  232. int cursor; /* cursor style */
  233. } XWindow;
  234. typedef struct {
  235. uint b;
  236. uint mask;
  237. char *s;
  238. } Mousekey;
  239. typedef struct {
  240. KeySym k;
  241. uint mask;
  242. char *s;
  243. /* three valued logic variables: 0 indifferent, 1 on, -1 off */
  244. signed char appkey; /* application keypad */
  245. signed char appcursor; /* application cursor */
  246. signed char crlf; /* crlf mode */
  247. } Key;
  248. typedef struct {
  249. int mode;
  250. int type;
  251. int snap;
  252. /*
  253. * Selection variables:
  254. * nb – normalized coordinates of the beginning of the selection
  255. * ne – normalized coordinates of the end of the selection
  256. * ob – original coordinates of the beginning of the selection
  257. * oe – original coordinates of the end of the selection
  258. */
  259. struct {
  260. int x, y;
  261. } nb, ne, ob, oe;
  262. char *primary, *clipboard;
  263. Atom xtarget;
  264. bool alt;
  265. struct timespec tclick1;
  266. struct timespec tclick2;
  267. } Selection;
  268. typedef union {
  269. int i;
  270. uint ui;
  271. float f;
  272. const void *v;
  273. } Arg;
  274. typedef struct {
  275. uint mod;
  276. KeySym keysym;
  277. void (*func)(const Arg *);
  278. const Arg arg;
  279. } Shortcut;
  280. /* function definitions used in config.h */
  281. static void clipcopy(const Arg *);
  282. static void clippaste(const Arg *);
  283. static void numlock(const Arg *);
  284. static void selpaste(const Arg *);
  285. static void xzoom(const Arg *);
  286. static void xzoomabs(const Arg *);
  287. static void xzoomreset(const Arg *);
  288. static void printsel(const Arg *);
  289. static void printscreen(const Arg *) ;
  290. static void toggleprinter(const Arg *);
  291. /* Config.h for applying patches and the configuration. */
  292. #include "config.h"
  293. /* Font structure */
  294. typedef struct {
  295. int height;
  296. int width;
  297. int ascent;
  298. int descent;
  299. short lbearing;
  300. short rbearing;
  301. XftFont *match;
  302. FcFontSet *set;
  303. FcPattern *pattern;
  304. } Font;
  305. /* Drawing Context */
  306. typedef struct {
  307. Color col[MAX(LEN(colorname), 256)];
  308. Font font, bfont, ifont, ibfont;
  309. GC gc;
  310. } DC;
  311. static void die(const char *, ...);
  312. static void draw(void);
  313. static void redraw(void);
  314. static void drawregion(int, int, int, int);
  315. static void execsh(void);
  316. static void sigchld(int);
  317. static void run(void);
  318. static void csidump(void);
  319. static void csihandle(void);
  320. static void csiparse(void);
  321. static void csireset(void);
  322. static int eschandle(uchar);
  323. static void strdump(void);
  324. static void strhandle(void);
  325. static void strparse(void);
  326. static void strreset(void);
  327. static int tattrset(int);
  328. static void tprinter(char *, size_t);
  329. static void tdumpsel(void);
  330. static void tdumpline(int);
  331. static void tdump(void);
  332. static void tclearregion(int, int, int, int);
  333. static void tcursor(int);
  334. static void tdeletechar(int);
  335. static void tdeleteline(int);
  336. static void tinsertblank(int);
  337. static void tinsertblankline(int);
  338. static int tlinelen(int);
  339. static void tmoveto(int, int);
  340. static void tmoveato(int, int);
  341. static void tnew(int, int);
  342. static void tnewline(int);
  343. static void tputtab(int);
  344. static void tputc(char *, int);
  345. static void treset(void);
  346. static void tresize(int, int);
  347. static void tscrollup(int, int);
  348. static void tscrolldown(int, int);
  349. static void tsetattr(int *, int);
  350. static void tsetchar(char *, Glyph *, int, int);
  351. static void tsetscroll(int, int);
  352. static void tswapscreen(void);
  353. static void tsetdirt(int, int);
  354. static void tsetdirtattr(int);
  355. static void tsetmode(bool, bool, int *, int);
  356. static void tfulldirt(void);
  357. static void techo(char *, int);
  358. static void tcontrolcode(uchar );
  359. static void tdectest(char );
  360. static int32_t tdefcolor(int *, int *, int);
  361. static void tdeftran(char);
  362. static inline bool match(uint, uint);
  363. static void ttynew(void);
  364. static void ttyread(void);
  365. static void ttyresize(void);
  366. static void ttysend(char *, size_t);
  367. static void ttywrite(const char *, size_t);
  368. static void tstrsequence(uchar);
  369. static inline ushort sixd_to_16bit(int);
  370. static void xdraws(char *, Glyph, int, int, int, int);
  371. static void xhints(void);
  372. static void xclear(int, int, int, int);
  373. static void xdrawcursor(void);
  374. static void xinit(void);
  375. static void xloadcols(void);
  376. static int xsetcolorname(int, const char *);
  377. static int xgeommasktogravity(int);
  378. static int xloadfont(Font *, FcPattern *);
  379. static void xloadfonts(char *, double);
  380. static void xsettitle(char *);
  381. static void xresettitle(void);
  382. static void xsetpointermotion(int);
  383. static void xseturgency(int);
  384. static void xsetsel(char *, Time);
  385. static void xtermclear(int, int, int, int);
  386. static void xunloadfont(Font *);
  387. static void xunloadfonts(void);
  388. static void xresize(int, int);
  389. static void expose(XEvent *);
  390. static void visibility(XEvent *);
  391. static void unmap(XEvent *);
  392. static char *kmap(KeySym, uint);
  393. static void kpress(XEvent *);
  394. static void cmessage(XEvent *);
  395. static void cresize(int, int);
  396. static void resize(XEvent *);
  397. static void focus(XEvent *);
  398. static void brelease(XEvent *);
  399. static void bpress(XEvent *);
  400. static void bmotion(XEvent *);
  401. static void selnotify(XEvent *);
  402. static void selclear(XEvent *);
  403. static void selrequest(XEvent *);
  404. static void selinit(void);
  405. static void selnormalize(void);
  406. static inline bool selected(int, int);
  407. static char *getsel(void);
  408. static void selcopy(Time);
  409. static void selscroll(int, int);
  410. static void selsnap(int, int *, int *, int);
  411. static int x2col(int);
  412. static int y2row(int);
  413. static void getbuttoninfo(XEvent *);
  414. static void mousereport(XEvent *);
  415. static size_t utf8decode(char *, long *, size_t);
  416. static long utf8decodebyte(char, size_t *);
  417. static size_t utf8encode(long, char *, size_t);
  418. static char utf8encodebyte(long, size_t);
  419. static size_t utf8len(char *);
  420. static size_t utf8validate(long *, size_t);
  421. static ssize_t xwrite(int, const char *, size_t);
  422. static void *xmalloc(size_t);
  423. static void *xrealloc(void *, size_t);
  424. static char *xstrdup(char *);
  425. static void usage(void);
  426. static void (*handler[LASTEvent])(XEvent *) = {
  427. [KeyPress] = kpress,
  428. [ClientMessage] = cmessage,
  429. [ConfigureNotify] = resize,
  430. [VisibilityNotify] = visibility,
  431. [UnmapNotify] = unmap,
  432. [Expose] = expose,
  433. [FocusIn] = focus,
  434. [FocusOut] = focus,
  435. [MotionNotify] = bmotion,
  436. [ButtonPress] = bpress,
  437. [ButtonRelease] = brelease,
  438. /*
  439. * Uncomment if you want the selection to disappear when you select something
  440. * different in another window.
  441. */
  442. /* [SelectionClear] = selclear, */
  443. [SelectionNotify] = selnotify,
  444. [SelectionRequest] = selrequest,
  445. };
  446. /* Globals */
  447. static DC dc;
  448. static XWindow xw;
  449. static Term term;
  450. static CSIEscape csiescseq;
  451. static STREscape strescseq;
  452. static int cmdfd;
  453. static pid_t pid;
  454. static Selection sel;
  455. static int iofd = STDOUT_FILENO;
  456. static char **opt_cmd = NULL;
  457. static char *opt_io = NULL;
  458. static char *opt_title = NULL;
  459. static char *opt_embed = NULL;
  460. static char *opt_class = NULL;
  461. static char *opt_font = NULL;
  462. static int oldbutton = 3; /* button event on startup: 3 = release */
  463. static char *usedfont = NULL;
  464. static double usedfontsize = 0;
  465. static double defaultfontsize = 0;
  466. static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
  467. static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
  468. static long utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
  469. static long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
  470. /* Font Ring Cache */
  471. enum {
  472. FRC_NORMAL,
  473. FRC_ITALIC,
  474. FRC_BOLD,
  475. FRC_ITALICBOLD
  476. };
  477. typedef struct {
  478. XftFont *font;
  479. int flags;
  480. long unicodep;
  481. } Fontcache;
  482. /* Fontcache is an array now. A new font will be appended to the array. */
  483. static Fontcache frc[16];
  484. static int frclen = 0;
  485. ssize_t
  486. xwrite(int fd, const char *s, size_t len) {
  487. size_t aux = len;
  488. while(len > 0) {
  489. ssize_t r = write(fd, s, len);
  490. if(r < 0)
  491. return r;
  492. len -= r;
  493. s += r;
  494. }
  495. return aux;
  496. }
  497. void *
  498. xmalloc(size_t len) {
  499. void *p = malloc(len);
  500. if(!p)
  501. die("Out of memory\n");
  502. return p;
  503. }
  504. void *
  505. xrealloc(void *p, size_t len) {
  506. if((p = realloc(p, len)) == NULL)
  507. die("Out of memory\n");
  508. return p;
  509. }
  510. char *
  511. xstrdup(char *s) {
  512. if((s = strdup(s)) == NULL)
  513. die("Out of memory\n");
  514. return s;
  515. }
  516. size_t
  517. utf8decode(char *c, long *u, size_t clen) {
  518. size_t i, j, len, type;
  519. long udecoded;
  520. *u = UTF_INVALID;
  521. if(!clen)
  522. return 0;
  523. udecoded = utf8decodebyte(c[0], &len);
  524. if(!BETWEEN(len, 1, UTF_SIZ))
  525. return 1;
  526. for(i = 1, j = 1; i < clen && j < len; ++i, ++j) {
  527. udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
  528. if(type != 0)
  529. return j;
  530. }
  531. if(j < len)
  532. return 0;
  533. *u = udecoded;
  534. utf8validate(u, len);
  535. return len;
  536. }
  537. long
  538. utf8decodebyte(char c, size_t *i) {
  539. for(*i = 0; *i < LEN(utfmask); ++(*i))
  540. if(((uchar)c & utfmask[*i]) == utfbyte[*i])
  541. return (uchar)c & ~utfmask[*i];
  542. return 0;
  543. }
  544. size_t
  545. utf8encode(long u, char *c, size_t clen) {
  546. size_t len, i;
  547. len = utf8validate(&u, 0);
  548. if(clen < len)
  549. return 0;
  550. for(i = len - 1; i != 0; --i) {
  551. c[i] = utf8encodebyte(u, 0);
  552. u >>= 6;
  553. }
  554. c[0] = utf8encodebyte(u, len);
  555. return len;
  556. }
  557. char
  558. utf8encodebyte(long u, size_t i) {
  559. return utfbyte[i] | (u & ~utfmask[i]);
  560. }
  561. size_t
  562. utf8len(char *c) {
  563. return utf8decode(c, &(long){0}, UTF_SIZ);
  564. }
  565. size_t
  566. utf8validate(long *u, size_t i) {
  567. if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
  568. *u = UTF_INVALID;
  569. for(i = 1; *u > utfmax[i]; ++i)
  570. ;
  571. return i;
  572. }
  573. void
  574. selinit(void) {
  575. memset(&sel.tclick1, 0, sizeof(sel.tclick1));
  576. memset(&sel.tclick2, 0, sizeof(sel.tclick2));
  577. sel.mode = 0;
  578. sel.ob.x = -1;
  579. sel.primary = NULL;
  580. sel.clipboard = NULL;
  581. sel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
  582. if(sel.xtarget == None)
  583. sel.xtarget = XA_STRING;
  584. }
  585. int
  586. x2col(int x) {
  587. x -= borderpx;
  588. x /= xw.cw;
  589. return LIMIT(x, 0, term.col-1);
  590. }
  591. int
  592. y2row(int y) {
  593. y -= borderpx;
  594. y /= xw.ch;
  595. return LIMIT(y, 0, term.row-1);
  596. }
  597. int tlinelen(int y) {
  598. int i = term.col;
  599. if(term.line[y][i - 1].mode & ATTR_WRAP)
  600. return i;
  601. while(i > 0 && term.line[y][i - 1].c[0] == ' ')
  602. --i;
  603. return i;
  604. }
  605. void
  606. selnormalize(void) {
  607. int i;
  608. if(sel.ob.y == sel.oe.y || sel.type == SEL_RECTANGULAR) {
  609. sel.nb.x = MIN(sel.ob.x, sel.oe.x);
  610. sel.ne.x = MAX(sel.ob.x, sel.oe.x);
  611. } else {
  612. sel.nb.x = sel.ob.y < sel.oe.y ? sel.ob.x : sel.oe.x;
  613. sel.ne.x = sel.ob.y < sel.oe.y ? sel.oe.x : sel.ob.x;
  614. }
  615. sel.nb.y = MIN(sel.ob.y, sel.oe.y);
  616. sel.ne.y = MAX(sel.ob.y, sel.oe.y);
  617. selsnap(sel.snap, &sel.nb.x, &sel.nb.y, -1);
  618. selsnap(sel.snap, &sel.ne.x, &sel.ne.y, +1);
  619. /* expand selection over line breaks */
  620. if (sel.type == SEL_RECTANGULAR)
  621. return;
  622. i = tlinelen(sel.nb.y);
  623. if (i < sel.nb.x)
  624. sel.nb.x = i;
  625. if (tlinelen(sel.ne.y) <= sel.ne.x)
  626. sel.ne.x = term.col - 1;
  627. }
  628. bool
  629. selected(int x, int y) {
  630. if(sel.type == SEL_RECTANGULAR)
  631. return BETWEEN(y, sel.nb.y, sel.ne.y)
  632. && BETWEEN(x, sel.nb.x, sel.ne.x);
  633. return BETWEEN(y, sel.nb.y, sel.ne.y)
  634. && (y != sel.nb.y || x >= sel.nb.x)
  635. && (y != sel.ne.y || x <= sel.ne.x);
  636. }
  637. void
  638. selsnap(int mode, int *x, int *y, int direction) {
  639. int newx, newy, xt, yt;
  640. bool delim, prevdelim;
  641. Glyph *gp, *prevgp;
  642. switch(mode) {
  643. case SNAP_WORD:
  644. /*
  645. * Snap around if the word wraps around at the end or
  646. * beginning of a line.
  647. */
  648. prevgp = &term.line[*y][*x];
  649. prevdelim = strchr(worddelimiters, prevgp->c[0]) != NULL;
  650. for(;;) {
  651. newx = *x + direction;
  652. newy = *y;
  653. if(!BETWEEN(newx, 0, term.col - 1)) {
  654. newy += direction;
  655. newx = (newx + term.col) % term.col;
  656. if (!BETWEEN(newy, 0, term.row - 1))
  657. break;
  658. if(direction > 0)
  659. yt = *y, xt = *x;
  660. else
  661. yt = newy, xt = newx;
  662. if(!(term.line[yt][xt].mode & ATTR_WRAP))
  663. break;
  664. }
  665. if (newx >= tlinelen(newy))
  666. break;
  667. gp = &term.line[newy][newx];
  668. delim = strchr(worddelimiters, gp->c[0]) != NULL;
  669. if(!(gp->mode & ATTR_WDUMMY) && (delim != prevdelim
  670. || (delim && gp->c[0] != prevgp->c[0])))
  671. break;
  672. *x = newx;
  673. *y = newy;
  674. prevgp = gp;
  675. prevdelim = delim;
  676. }
  677. break;
  678. case SNAP_LINE:
  679. /*
  680. * Snap around if the the previous line or the current one
  681. * has set ATTR_WRAP at its end. Then the whole next or
  682. * previous line will be selected.
  683. */
  684. *x = (direction < 0) ? 0 : term.col - 1;
  685. if(direction < 0 && *y > 0) {
  686. for(; *y > 0; *y += direction) {
  687. if(!(term.line[*y-1][term.col-1].mode
  688. & ATTR_WRAP)) {
  689. break;
  690. }
  691. }
  692. } else if(direction > 0 && *y < term.row-1) {
  693. for(; *y < term.row; *y += direction) {
  694. if(!(term.line[*y][term.col-1].mode
  695. & ATTR_WRAP)) {
  696. break;
  697. }
  698. }
  699. }
  700. break;
  701. }
  702. }
  703. void
  704. getbuttoninfo(XEvent *e) {
  705. int type;
  706. uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
  707. sel.alt = IS_SET(MODE_ALTSCREEN);
  708. sel.oe.x = x2col(e->xbutton.x);
  709. sel.oe.y = y2row(e->xbutton.y);
  710. selnormalize();
  711. sel.type = SEL_REGULAR;
  712. for(type = 1; type < LEN(selmasks); ++type) {
  713. if(match(selmasks[type], state)) {
  714. sel.type = type;
  715. break;
  716. }
  717. }
  718. }
  719. void
  720. mousereport(XEvent *e) {
  721. int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
  722. button = e->xbutton.button, state = e->xbutton.state,
  723. len;
  724. char buf[40];
  725. static int ox, oy;
  726. /* from urxvt */
  727. if(e->xbutton.type == MotionNotify) {
  728. if(x == ox && y == oy)
  729. return;
  730. if(!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
  731. return;
  732. /* MOUSE_MOTION: no reporting if no button is pressed */
  733. if(IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
  734. return;
  735. button = oldbutton + 32;
  736. ox = x;
  737. oy = y;
  738. } else {
  739. if(!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
  740. button = 3;
  741. } else {
  742. button -= Button1;
  743. if(button >= 3)
  744. button += 64 - 3;
  745. }
  746. if(e->xbutton.type == ButtonPress) {
  747. oldbutton = button;
  748. ox = x;
  749. oy = y;
  750. } else if(e->xbutton.type == ButtonRelease) {
  751. oldbutton = 3;
  752. /* MODE_MOUSEX10: no button release reporting */
  753. if(IS_SET(MODE_MOUSEX10))
  754. return;
  755. if (button == 64 || button == 65)
  756. return;
  757. }
  758. }
  759. if(!IS_SET(MODE_MOUSEX10)) {
  760. button += (state & ShiftMask ? 4 : 0)
  761. + (state & Mod4Mask ? 8 : 0)
  762. + (state & ControlMask ? 16 : 0);
  763. }
  764. len = 0;
  765. if(IS_SET(MODE_MOUSESGR)) {
  766. len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
  767. button, x+1, y+1,
  768. e->xbutton.type == ButtonRelease ? 'm' : 'M');
  769. } else if(x < 223 && y < 223) {
  770. len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
  771. 32+button, 32+x+1, 32+y+1);
  772. } else {
  773. return;
  774. }
  775. ttywrite(buf, len);
  776. }
  777. void
  778. bpress(XEvent *e) {
  779. struct timespec now;
  780. Mousekey *mk;
  781. if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
  782. mousereport(e);
  783. return;
  784. }
  785. for(mk = mshortcuts; mk < mshortcuts + LEN(mshortcuts); mk++) {
  786. if(e->xbutton.button == mk->b
  787. && match(mk->mask, e->xbutton.state)) {
  788. ttysend(mk->s, strlen(mk->s));
  789. return;
  790. }
  791. }
  792. if(e->xbutton.button == Button1) {
  793. clock_gettime(CLOCK_MONOTONIC, &now);
  794. /* Clear previous selection, logically and visually. */
  795. selclear(NULL);
  796. sel.mode = 1;
  797. sel.type = SEL_REGULAR;
  798. sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
  799. sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
  800. /*
  801. * If the user clicks below predefined timeouts specific
  802. * snapping behaviour is exposed.
  803. */
  804. if(TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
  805. sel.snap = SNAP_LINE;
  806. } else if(TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
  807. sel.snap = SNAP_WORD;
  808. } else {
  809. sel.snap = 0;
  810. }
  811. selnormalize();
  812. /*
  813. * Draw selection, unless it's regular and we don't want to
  814. * make clicks visible
  815. */
  816. if(sel.snap != 0) {
  817. sel.mode++;
  818. tsetdirt(sel.nb.y, sel.ne.y);
  819. }
  820. sel.tclick2 = sel.tclick1;
  821. sel.tclick1 = now;
  822. }
  823. }
  824. char *
  825. getsel(void) {
  826. char *str, *ptr;
  827. int y, bufsize, size, lastx, linelen;
  828. Glyph *gp, *last;
  829. if(sel.ob.x == -1)
  830. return NULL;
  831. bufsize = (term.col+1) * (sel.ne.y-sel.nb.y+1) * UTF_SIZ;
  832. ptr = str = xmalloc(bufsize);
  833. /* append every set & selected glyph to the selection */
  834. for(y = sel.nb.y; y < sel.ne.y + 1; y++) {
  835. linelen = tlinelen(y);
  836. if(sel.type == SEL_RECTANGULAR) {
  837. gp = &term.line[y][sel.nb.x];
  838. lastx = sel.ne.x;
  839. } else {
  840. gp = &term.line[y][sel.nb.y == y ? sel.nb.x : 0];
  841. lastx = (sel.ne.y == y) ? sel.ne.x : term.col-1;
  842. }
  843. last = &term.line[y][MIN(lastx, linelen-1)];
  844. while(last >= gp && last->c[0] == ' ')
  845. --last;
  846. for( ; gp <= last; ++gp) {
  847. if(gp->mode & ATTR_WDUMMY)
  848. continue;
  849. size = utf8len(gp->c);
  850. memcpy(ptr, gp->c, size);
  851. ptr += size;
  852. }
  853. /*
  854. * Copy and pasting of line endings is inconsistent
  855. * in the inconsistent terminal and GUI world.
  856. * The best solution seems like to produce '\n' when
  857. * something is copied from st and convert '\n' to
  858. * '\r', when something to be pasted is received by
  859. * st.
  860. * FIXME: Fix the computer world.
  861. */
  862. if((y < sel.ne.y || lastx >= linelen) && !(last->mode & ATTR_WRAP))
  863. *ptr++ = '\n';
  864. }
  865. *ptr = 0;
  866. return str;
  867. }
  868. void
  869. selcopy(Time t) {
  870. xsetsel(getsel(), t);
  871. }
  872. void
  873. selnotify(XEvent *e) {
  874. ulong nitems, ofs, rem;
  875. int format;
  876. uchar *data, *last, *repl;
  877. Atom type;
  878. XSelectionEvent *xsev;
  879. ofs = 0;
  880. xsev = &e->xselection;
  881. if (xsev->property == None)
  882. return;
  883. do {
  884. if(XGetWindowProperty(xw.dpy, xw.win, xsev->property, ofs,
  885. BUFSIZ/4, False, AnyPropertyType,
  886. &type, &format, &nitems, &rem,
  887. &data)) {
  888. fprintf(stderr, "Clipboard allocation failed\n");
  889. return;
  890. }
  891. /*
  892. * As seen in getsel:
  893. * Line endings are inconsistent in the terminal and GUI world
  894. * copy and pasting. When receiving some selection data,
  895. * replace all '\n' with '\r'.
  896. * FIXME: Fix the computer world.
  897. */
  898. repl = data;
  899. last = data + nitems * format / 8;
  900. while((repl = memchr(repl, '\n', last - repl))) {
  901. *repl++ = '\r';
  902. }
  903. if(IS_SET(MODE_BRCKTPASTE))
  904. ttywrite("\033[200~", 6);
  905. ttysend((char *)data, nitems * format / 8);
  906. if(IS_SET(MODE_BRCKTPASTE))
  907. ttywrite("\033[201~", 6);
  908. XFree(data);
  909. /* number of 32-bit chunks returned */
  910. ofs += nitems * format / 32;
  911. } while(rem > 0);
  912. }
  913. void
  914. selpaste(const Arg *dummy) {
  915. XConvertSelection(xw.dpy, XA_PRIMARY, sel.xtarget, XA_PRIMARY,
  916. xw.win, CurrentTime);
  917. }
  918. void
  919. clipcopy(const Arg *dummy) {
  920. Atom clipboard;
  921. if(sel.clipboard != NULL)
  922. free(sel.clipboard);
  923. if(sel.primary != NULL) {
  924. sel.clipboard = xstrdup(sel.primary);
  925. clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
  926. XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
  927. }
  928. }
  929. void
  930. clippaste(const Arg *dummy) {
  931. Atom clipboard;
  932. clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
  933. XConvertSelection(xw.dpy, clipboard, sel.xtarget, clipboard,
  934. xw.win, CurrentTime);
  935. }
  936. void
  937. selclear(XEvent *e) {
  938. if(sel.ob.x == -1)
  939. return;
  940. sel.ob.x = -1;
  941. tsetdirt(sel.nb.y, sel.ne.y);
  942. }
  943. void
  944. selrequest(XEvent *e) {
  945. XSelectionRequestEvent *xsre;
  946. XSelectionEvent xev;
  947. Atom xa_targets, string, clipboard;
  948. char *seltext;
  949. xsre = (XSelectionRequestEvent *) e;
  950. xev.type = SelectionNotify;
  951. xev.requestor = xsre->requestor;
  952. xev.selection = xsre->selection;
  953. xev.target = xsre->target;
  954. xev.time = xsre->time;
  955. if (xsre->property == None)
  956. xsre->property = xsre->target;
  957. /* reject */
  958. xev.property = None;
  959. xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
  960. if(xsre->target == xa_targets) {
  961. /* respond with the supported type */
  962. string = sel.xtarget;
  963. XChangeProperty(xsre->display, xsre->requestor, xsre->property,
  964. XA_ATOM, 32, PropModeReplace,
  965. (uchar *) &string, 1);
  966. xev.property = xsre->property;
  967. } else if(xsre->target == sel.xtarget || xsre->target == XA_STRING) {
  968. /*
  969. * xith XA_STRING non ascii characters may be incorrect in the
  970. * requestor. It is not our problem, use utf8.
  971. */
  972. clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
  973. if(xsre->selection == XA_PRIMARY) {
  974. seltext = sel.primary;
  975. } else if(xsre->selection == clipboard) {
  976. seltext = sel.clipboard;
  977. } else {
  978. fprintf(stderr,
  979. "Unhandled clipboard selection 0x%lx\n",
  980. xsre->selection);
  981. return;
  982. }
  983. if(seltext != NULL) {
  984. XChangeProperty(xsre->display, xsre->requestor,
  985. xsre->property, xsre->target,
  986. 8, PropModeReplace,
  987. (uchar *)seltext, strlen(seltext));
  988. xev.property = xsre->property;
  989. }
  990. }
  991. /* all done, send a notification to the listener */
  992. if(!XSendEvent(xsre->display, xsre->requestor, True, 0, (XEvent *) &xev))
  993. fprintf(stderr, "Error sending SelectionNotify event\n");
  994. }
  995. void
  996. xsetsel(char *str, Time t) {
  997. free(sel.primary);
  998. sel.primary = str;
  999. XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
  1000. if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
  1001. selclear(0);
  1002. }
  1003. void
  1004. brelease(XEvent *e) {
  1005. if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
  1006. mousereport(e);
  1007. return;
  1008. }
  1009. if(e->xbutton.button == Button2) {
  1010. selpaste(NULL);
  1011. } else if(e->xbutton.button == Button1) {
  1012. if(sel.mode < 2) {
  1013. selclear(NULL);
  1014. } else {
  1015. getbuttoninfo(e);
  1016. selcopy(e->xbutton.time);
  1017. }
  1018. sel.mode = 0;
  1019. tsetdirt(sel.nb.y, sel.ne.y);
  1020. }
  1021. }
  1022. void
  1023. bmotion(XEvent *e) {
  1024. int oldey, oldex, oldsby, oldsey;
  1025. if(IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
  1026. mousereport(e);
  1027. return;
  1028. }
  1029. if(!sel.mode)
  1030. return;
  1031. sel.mode++;
  1032. oldey = sel.oe.y;
  1033. oldex = sel.oe.x;
  1034. oldsby = sel.nb.y;
  1035. oldsey = sel.ne.y;
  1036. getbuttoninfo(e);
  1037. if(oldey != sel.oe.y || oldex != sel.oe.x)
  1038. tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
  1039. }
  1040. void
  1041. die(const char *errstr, ...) {
  1042. va_list ap;
  1043. va_start(ap, errstr);
  1044. vfprintf(stderr, errstr, ap);
  1045. va_end(ap);
  1046. exit(EXIT_FAILURE);
  1047. }
  1048. void
  1049. execsh(void) {
  1050. char **args, *sh, *prog;
  1051. const struct passwd *pw;
  1052. char buf[sizeof(long) * 8 + 1];
  1053. errno = 0;
  1054. if((pw = getpwuid(getuid())) == NULL) {
  1055. if(errno)
  1056. die("getpwuid:%s\n", strerror(errno));
  1057. else
  1058. die("who are you?\n");
  1059. }
  1060. if (!(sh = getenv("SHELL"))) {
  1061. sh = (pw->pw_shell[0]) ? pw->pw_shell : shell;
  1062. }
  1063. if(opt_cmd)
  1064. prog = opt_cmd[0];
  1065. else if(utmp)
  1066. prog = utmp;
  1067. else
  1068. prog = sh;
  1069. args = (opt_cmd) ? opt_cmd : (char *[]) {prog, NULL};
  1070. snprintf(buf, sizeof(buf), "%lu", xw.win);
  1071. unsetenv("COLUMNS");
  1072. unsetenv("LINES");
  1073. unsetenv("TERMCAP");
  1074. setenv("LOGNAME", pw->pw_name, 1);
  1075. setenv("USER", pw->pw_name, 1);
  1076. setenv("SHELL", sh, 1);
  1077. setenv("HOME", pw->pw_dir, 1);
  1078. setenv("TERM", termname, 1);
  1079. setenv("WINDOWID", buf, 1);
  1080. signal(SIGCHLD, SIG_DFL);
  1081. signal(SIGHUP, SIG_DFL);
  1082. signal(SIGINT, SIG_DFL);
  1083. signal(SIGQUIT, SIG_DFL);
  1084. signal(SIGTERM, SIG_DFL);
  1085. signal(SIGALRM, SIG_DFL);
  1086. execvp(prog, args);
  1087. _exit(EXIT_FAILURE);
  1088. }
  1089. void
  1090. sigchld(int a) {
  1091. int stat, ret;
  1092. if(waitpid(pid, &stat, 0) < 0)
  1093. die("Waiting for pid %hd failed: %s\n", pid, strerror(errno));
  1094. ret = WIFEXITED(stat) ? WEXITSTATUS(stat) : EXIT_FAILURE;
  1095. if (ret != EXIT_SUCCESS)
  1096. die("child finished with error '%d'\n", stat);
  1097. exit(EXIT_SUCCESS);
  1098. }
  1099. void
  1100. ttynew(void) {
  1101. int m, s;
  1102. struct winsize w = {term.row, term.col, 0, 0};
  1103. /* seems to work fine on linux, openbsd and freebsd */
  1104. if(openpty(&m, &s, NULL, NULL, &w) < 0)
  1105. die("openpty failed: %s\n", strerror(errno));
  1106. switch(pid = fork()) {
  1107. case -1:
  1108. die("fork failed\n");
  1109. break;
  1110. case 0:
  1111. setsid(); /* create a new process group */
  1112. dup2(s, STDIN_FILENO);
  1113. dup2(s, STDOUT_FILENO);
  1114. dup2(s, STDERR_FILENO);
  1115. if(ioctl(s, TIOCSCTTY, NULL) < 0)
  1116. die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
  1117. close(s);
  1118. close(m);
  1119. execsh();
  1120. break;
  1121. default:
  1122. close(s);
  1123. cmdfd = m;
  1124. signal(SIGCHLD, sigchld);
  1125. if(opt_io) {
  1126. term.mode |= MODE_PRINT;
  1127. iofd = (!strcmp(opt_io, "-")) ?
  1128. STDOUT_FILENO :
  1129. open(opt_io, O_WRONLY | O_CREAT, 0666);
  1130. if(iofd < 0) {
  1131. fprintf(stderr, "Error opening %s:%s\n",
  1132. opt_io, strerror(errno));
  1133. }
  1134. }
  1135. break;
  1136. }
  1137. }
  1138. void
  1139. ttyread(void) {
  1140. static char buf[BUFSIZ];
  1141. static int buflen = 0;
  1142. char *ptr;
  1143. char s[UTF_SIZ];
  1144. int charsize; /* size of utf8 char in bytes */
  1145. long unicodep;
  1146. int ret;
  1147. /* append read bytes to unprocessed bytes */
  1148. if((ret = read(cmdfd, buf+buflen, LEN(buf)-buflen)) < 0)
  1149. die("Couldn't read from shell: %s\n", strerror(errno));
  1150. /* process every complete utf8 char */
  1151. buflen += ret;
  1152. ptr = buf;
  1153. while((charsize = utf8decode(ptr, &unicodep, buflen))) {
  1154. utf8encode(unicodep, s, UTF_SIZ);
  1155. tputc(s, charsize);
  1156. ptr += charsize;
  1157. buflen -= charsize;
  1158. }
  1159. /* keep any uncomplete utf8 char for the next call */
  1160. memmove(buf, ptr, buflen);
  1161. }
  1162. void
  1163. ttywrite(const char *s, size_t n) {
  1164. if(xwrite(cmdfd, s, n) == -1)
  1165. die("write error on tty: %s\n", strerror(errno));
  1166. }
  1167. void
  1168. ttysend(char *s, size_t n) {
  1169. ttywrite(s, n);
  1170. if(IS_SET(MODE_ECHO))
  1171. techo(s, n);
  1172. }
  1173. void
  1174. ttyresize(void) {
  1175. struct winsize w;
  1176. w.ws_row = term.row;
  1177. w.ws_col = term.col;
  1178. w.ws_xpixel = xw.tw;
  1179. w.ws_ypixel = xw.th;
  1180. if(ioctl(cmdfd, TIOCSWINSZ, &w) < 0)
  1181. fprintf(stderr, "Couldn't set window size: %s\n", strerror(errno));
  1182. }
  1183. int
  1184. tattrset(int attr) {
  1185. int i, j;
  1186. for(i = 0; i < term.row-1; i++) {
  1187. for(j = 0; j < term.col-1; j++) {
  1188. if(term.line[i][j].mode & attr)
  1189. return 1;
  1190. }
  1191. }
  1192. return 0;
  1193. }
  1194. void
  1195. tsetdirt(int top, int bot) {
  1196. int i;
  1197. LIMIT(top, 0, term.row-1);
  1198. LIMIT(bot, 0, term.row-1);
  1199. for(i = top; i <= bot; i++)
  1200. term.dirty[i] = 1;
  1201. }
  1202. void
  1203. tsetdirtattr(int attr) {
  1204. int i, j;
  1205. for(i = 0; i < term.row-1; i++) {
  1206. for(j = 0; j < term.col-1; j++) {
  1207. if(term.line[i][j].mode & attr) {
  1208. tsetdirt(i, i);
  1209. break;
  1210. }
  1211. }
  1212. }
  1213. }
  1214. void
  1215. tfulldirt(void) {
  1216. tsetdirt(0, term.row-1);
  1217. }
  1218. void
  1219. tcursor(int mode) {
  1220. static TCursor c[2];
  1221. bool alt = IS_SET(MODE_ALTSCREEN);
  1222. if(mode == CURSOR_SAVE) {
  1223. c[alt] = term.c;
  1224. } else if(mode == CURSOR_LOAD) {
  1225. term.c = c[alt];
  1226. tmoveto(c[alt].x, c[alt].y);
  1227. }
  1228. }
  1229. void
  1230. treset(void) {
  1231. uint i;
  1232. term.c = (TCursor){{
  1233. .mode = ATTR_NULL,
  1234. .fg = defaultfg,
  1235. .bg = defaultbg
  1236. }, .x = 0, .y = 0, .state = CURSOR_DEFAULT};
  1237. memset(term.tabs, 0, term.col * sizeof(*term.tabs));
  1238. for(i = tabspaces; i < term.col; i += tabspaces)
  1239. term.tabs[i] = 1;
  1240. term.top = 0;
  1241. term.bot = term.row - 1;
  1242. term.mode = MODE_WRAP;
  1243. memset(term.trantbl, sizeof(term.trantbl), CS_USA);
  1244. term.charset = 0;
  1245. for(i = 0; i < 2; i++) {
  1246. tmoveto(0, 0);
  1247. tcursor(CURSOR_SAVE);
  1248. tclearregion(0, 0, term.col-1, term.row-1);
  1249. tswapscreen();
  1250. }
  1251. }
  1252. void
  1253. tnew(int col, int row) {
  1254. term = (Term){ .c = { .attr = { .fg = defaultfg, .bg = defaultbg } } };
  1255. tresize(col, row);
  1256. term.numlock = 1;
  1257. treset();
  1258. }
  1259. void
  1260. tswapscreen(void) {
  1261. Line *tmp = term.line;
  1262. term.line = term.alt;
  1263. term.alt = tmp;
  1264. term.mode ^= MODE_ALTSCREEN;
  1265. tfulldirt();
  1266. }
  1267. void
  1268. tscrolldown(int orig, int n) {
  1269. int i;
  1270. Line temp;
  1271. LIMIT(n, 0, term.bot-orig+1);
  1272. tsetdirt(orig, term.bot-n);
  1273. tclearregion(0, term.bot-n+1, term.col-1, term.bot);
  1274. for(i = term.bot; i >= orig+n; i--) {
  1275. temp = term.line[i];
  1276. term.line[i] = term.line[i-n];
  1277. term.line[i-n] = temp;
  1278. }
  1279. selscroll(orig, n);
  1280. }
  1281. void
  1282. tscrollup(int orig, int n) {
  1283. int i;
  1284. Line temp;
  1285. LIMIT(n, 0, term.bot-orig+1);
  1286. tclearregion(0, orig, term.col-1, orig+n-1);
  1287. tsetdirt(orig+n, term.bot);
  1288. for(i = orig; i <= term.bot-n; i++) {
  1289. temp = term.line[i];
  1290. term.line[i] = term.line[i+n];
  1291. term.line[i+n] = temp;
  1292. }
  1293. selscroll(orig, -n);
  1294. }
  1295. void
  1296. selscroll(int orig, int n) {
  1297. if(sel.ob.x == -1)
  1298. return;
  1299. if(BETWEEN(sel.ob.y, orig, term.bot) || BETWEEN(sel.oe.y, orig, term.bot)) {
  1300. if((sel.ob.y += n) > term.bot || (sel.oe.y += n) < term.top) {
  1301. selclear(NULL);
  1302. return;
  1303. }
  1304. if(sel.type == SEL_RECTANGULAR) {
  1305. if(sel.ob.y < term.top)
  1306. sel.ob.y = term.top;
  1307. if(sel.oe.y > term.bot)
  1308. sel.oe.y = term.bot;
  1309. } else {
  1310. if(sel.ob.y < term.top) {
  1311. sel.ob.y = term.top;
  1312. sel.ob.x = 0;
  1313. }
  1314. if(sel.oe.y > term.bot) {
  1315. sel.oe.y = term.bot;
  1316. sel.oe.x = term.col;
  1317. }
  1318. }
  1319. selnormalize();
  1320. }
  1321. }
  1322. void
  1323. tnewline(int first_col) {
  1324. int y = term.c.y;
  1325. if(y == term.bot) {
  1326. tscrollup(term.top, 1);
  1327. } else {
  1328. y++;
  1329. }
  1330. tmoveto(first_col ? 0 : term.c.x, y);
  1331. }
  1332. void
  1333. csiparse(void) {
  1334. char *p = csiescseq.buf, *np;
  1335. long int v;
  1336. csiescseq.narg = 0;
  1337. if(*p == '?') {
  1338. csiescseq.priv = 1;
  1339. p++;
  1340. }
  1341. csiescseq.buf[csiescseq.len] = '\0';
  1342. while(p < csiescseq.buf+csiescseq.len) {
  1343. np = NULL;
  1344. v = strtol(p, &np, 10);
  1345. if(np == p)
  1346. v = 0;
  1347. if(v == LONG_MAX || v == LONG_MIN)
  1348. v = -1;
  1349. csiescseq.arg[csiescseq.narg++] = v;
  1350. p = np;
  1351. if(*p != ';' || csiescseq.narg == ESC_ARG_SIZ)
  1352. break;
  1353. p++;
  1354. }
  1355. csiescseq.mode[0] = *p++;
  1356. csiescseq.mode[1] = (p < csiescseq.buf+csiescseq.len) ? *p : '\0';
  1357. }
  1358. /* for absolute user moves, when decom is set */
  1359. void
  1360. tmoveato(int x, int y) {
  1361. tmoveto(x, y + ((term.c.state & CURSOR_ORIGIN) ? term.top: 0));
  1362. }
  1363. void
  1364. tmoveto(int x, int y) {
  1365. int miny, maxy;
  1366. if(term.c.state & CURSOR_ORIGIN) {
  1367. miny = term.top;
  1368. maxy = term.bot;
  1369. } else {
  1370. miny = 0;
  1371. maxy = term.row - 1;
  1372. }
  1373. LIMIT(x, 0, term.col-1);
  1374. LIMIT(y, miny, maxy);
  1375. term.c.state &= ~CURSOR_WRAPNEXT;
  1376. term.c.x = x;
  1377. term.c.y = y;
  1378. }
  1379. void
  1380. tsetchar(char *c, Glyph *attr, int x, int y) {
  1381. static char *vt100_0[62] = { /* 0x41 - 0x7e */
  1382. "↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
  1383. 0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
  1384. 0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
  1385. 0, 0, 0, 0, 0, 0, 0, " ", /* X - _ */
  1386. "◆", "▒", "␉", "␌", "␍", "␊", "°", "±", /* ` - g */
  1387. "␤", "␋", "┘", "┐", "┌", "└", "┼", "⎺", /* h - o */
  1388. "⎻", "─", "⎼", "⎽", "├", "┤", "┴", "┬", /* p - w */
  1389. "│", "≤", "≥", "π", "≠", "£", "·", /* x - ~ */
  1390. };
  1391. /*
  1392. * The table is proudly stolen from rxvt.
  1393. */
  1394. if(term.trantbl[term.charset] == CS_GRAPHIC0) {
  1395. if(BETWEEN(c[0], 0x41, 0x7e) && vt100_0[c[0] - 0x41]) {
  1396. c = vt100_0[c[0] - 0x41];
  1397. }
  1398. }
  1399. if(term.line[y][x].mode & ATTR_WIDE) {
  1400. if(x+1 < term.col) {
  1401. term.line[y][x+1].c[0] = ' ';
  1402. term.line[y][x+1].mode &= ~ATTR_WDUMMY;
  1403. }
  1404. } else if(term.line[y][x].mode & ATTR_WDUMMY) {
  1405. term.line[y][x-1].c[0] = ' ';
  1406. term.line[y][x-1].mode &= ~ATTR_WIDE;
  1407. }
  1408. term.dirty[y] = 1;
  1409. term.line[y][x] = *attr;
  1410. memcpy(term.line[y][x].c, c, UTF_SIZ);
  1411. }
  1412. void
  1413. tclearregion(int x1, int y1, int x2, int y2) {
  1414. int x, y, temp;
  1415. Glyph *gp;
  1416. if(x1 > x2)
  1417. temp = x1, x1 = x2, x2 = temp;
  1418. if(y1 > y2)
  1419. temp = y1, y1 = y2, y2 = temp;
  1420. LIMIT(x1, 0, term.col-1);
  1421. LIMIT(x2, 0, term.col-1);
  1422. LIMIT(y1, 0, term.row-1);
  1423. LIMIT(y2, 0, term.row-1);
  1424. for(y = y1; y <= y2; y++) {
  1425. term.dirty[y] = 1;
  1426. for(x = x1; x <= x2; x++) {
  1427. gp = &term.line[y][x];
  1428. if(selected(x, y))
  1429. selclear(NULL);
  1430. gp->fg = term.c.attr.fg;
  1431. gp->bg = term.c.attr.bg;
  1432. gp->mode = 0;
  1433. memcpy(gp->c, " ", 2);
  1434. }
  1435. }
  1436. }
  1437. void
  1438. tdeletechar(int n) {
  1439. int dst, src, size;
  1440. Glyph *line;
  1441. LIMIT(n, 0, term.col - term.c.x);
  1442. dst = term.c.x;
  1443. src = term.c.x + n;
  1444. size = term.col - src;
  1445. line = term.line[term.c.y];
  1446. memmove(&line[dst], &line[src], size * sizeof(Glyph));
  1447. tclearregion(term.col-n, term.c.y, term.col-1, term.c.y);
  1448. }
  1449. void
  1450. tinsertblank(int n) {
  1451. int dst, src, size;
  1452. Glyph *line;
  1453. LIMIT(n, 0, term.col - term.c.x);
  1454. dst = term.c.x + n;
  1455. src = term.c.x;
  1456. size = term.col - dst;
  1457. line = term.line[term.c.y];
  1458. memmove(&line[dst], &line[src], size * sizeof(Glyph));
  1459. tclearregion(src, term.c.y, dst - 1, term.c.y);
  1460. }
  1461. void
  1462. tinsertblankline(int n) {
  1463. if(BETWEEN(term.c.y, term.top, term.bot))
  1464. tscrolldown(term.c.y, n);
  1465. }
  1466. void
  1467. tdeleteline(int n) {
  1468. if(BETWEEN(term.c.y, term.top, term.bot))
  1469. tscrollup(term.c.y, n);
  1470. }
  1471. int32_t
  1472. tdefcolor(int *attr, int *npar, int l) {
  1473. int32_t idx = -1;
  1474. uint r, g, b;
  1475. switch (attr[*npar + 1]) {
  1476. case 2: /* direct color in RGB space */
  1477. if (*npar + 4 >= l) {
  1478. fprintf(stderr,
  1479. "erresc(38): Incorrect number of parameters (%d)\n",
  1480. *npar);
  1481. break;
  1482. }
  1483. r = attr[*npar + 2];
  1484. g = attr[*npar + 3];
  1485. b = attr[*npar + 4];
  1486. *npar += 4;
  1487. if(!BETWEEN(r, 0, 255) || !BETWEEN(g, 0, 255) || !BETWEEN(b, 0, 255))
  1488. fprintf(stderr, "erresc: bad rgb color (%d,%d,%d)\n",
  1489. r, g, b);
  1490. else
  1491. idx = TRUECOLOR(r, g, b);
  1492. break;
  1493. case 5: /* indexed color */
  1494. if (*npar + 2 >= l) {
  1495. fprintf(stderr,
  1496. "erresc(38): Incorrect number of parameters (%d)\n",
  1497. *npar);
  1498. break;
  1499. }
  1500. *npar += 2;
  1501. if(!BETWEEN(attr[*npar], 0, 255))
  1502. fprintf(stderr, "erresc: bad fgcolor %d\n", attr[*npar]);
  1503. else
  1504. idx = attr[*npar];
  1505. break;
  1506. case 0: /* implemented defined (only foreground) */
  1507. case 1: /* transparent */
  1508. case 3: /* direct color in CMY space */
  1509. case 4: /* direct color in CMYK space */
  1510. default:
  1511. fprintf(stderr,
  1512. "erresc(38): gfx attr %d unknown\n", attr[*npar]);
  1513. break;
  1514. }
  1515. return idx;
  1516. }
  1517. void
  1518. tsetattr(int *attr, int l) {
  1519. int i;
  1520. int32_t idx;
  1521. for(i = 0; i < l; i++) {
  1522. switch(attr[i]) {
  1523. case 0:
  1524. term.c.attr.mode &= ~(
  1525. ATTR_BOLD |
  1526. ATTR_FAINT |
  1527. ATTR_ITALIC |
  1528. ATTR_UNDERLINE |
  1529. ATTR_BLINK |
  1530. ATTR_REVERSE |
  1531. ATTR_INVISIBLE |
  1532. ATTR_STRUCK );
  1533. term.c.attr.fg = defaultfg;
  1534. term.c.attr.bg = defaultbg;
  1535. break;
  1536. case 1:
  1537. term.c.attr.mode |= ATTR_BOLD;
  1538. break;
  1539. case 2:
  1540. term.c.attr.mode |= ATTR_FAINT;
  1541. break;
  1542. case 3:
  1543. term.c.attr.mode |= ATTR_ITALIC;
  1544. break;
  1545. case 4:
  1546. term.c.attr.mode |= ATTR_UNDERLINE;
  1547. break;
  1548. case 5: /* slow blink */
  1549. /* FALLTHROUGH */
  1550. case 6: /* rapid blink */
  1551. term.c.attr.mode |= ATTR_BLINK;
  1552. break;
  1553. case 7:
  1554. term.c.attr.mode |= ATTR_REVERSE;
  1555. break;
  1556. case 8:
  1557. term.c.attr.mode |= ATTR_INVISIBLE;
  1558. break;
  1559. case 9:
  1560. term.c.attr.mode |= ATTR_STRUCK;
  1561. break;
  1562. case 22:
  1563. term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
  1564. break;
  1565. case 23:
  1566. term.c.attr.mode &= ~ATTR_ITALIC;
  1567. break;
  1568. case 24:
  1569. term.c.attr.mode &= ~ATTR_UNDERLINE;
  1570. break;
  1571. case 25:
  1572. term.c.attr.mode &= ~ATTR_BLINK;
  1573. break;
  1574. case 27:
  1575. term.c.attr.mode &= ~ATTR_REVERSE;
  1576. break;
  1577. case 28:
  1578. term.c.attr.mode &= ~ATTR_INVISIBLE;
  1579. break;
  1580. case 29:
  1581. term.c.attr.mode &= ~ATTR_STRUCK;
  1582. break;
  1583. case 38:
  1584. if ((idx = tdefcolor(attr, &i, l)) >= 0)
  1585. term.c.attr.fg = idx;
  1586. break;
  1587. case 39:
  1588. term.c.attr.fg = defaultfg;
  1589. break;
  1590. case 48:
  1591. if ((idx = tdefcolor(attr, &i, l)) >= 0)
  1592. term.c.attr.bg = idx;
  1593. break;
  1594. case 49:
  1595. term.c.attr.bg = defaultbg;
  1596. break;
  1597. default:
  1598. if(BETWEEN(attr[i], 30, 37)) {
  1599. term.c.attr.fg = attr[i] - 30;
  1600. } else if(BETWEEN(attr[i], 40, 47)) {
  1601. term.c.attr.bg = attr[i] - 40;
  1602. } else if(BETWEEN(attr[i], 90, 97)) {
  1603. term.c.attr.fg = attr[i] - 90 + 8;
  1604. } else if(BETWEEN(attr[i], 100, 107)) {
  1605. term.c.attr.bg = attr[i] - 100 + 8;
  1606. } else {
  1607. fprintf(stderr,
  1608. "erresc(default): gfx attr %d unknown\n",
  1609. attr[i]), csidump();
  1610. }
  1611. break;
  1612. }
  1613. }
  1614. }
  1615. void
  1616. tsetscroll(int t, int b) {
  1617. int temp;
  1618. LIMIT(t, 0, term.row-1);
  1619. LIMIT(b, 0, term.row-1);
  1620. if(t > b) {
  1621. temp = t;
  1622. t = b;
  1623. b = temp;
  1624. }
  1625. term.top = t;
  1626. term.bot = b;
  1627. }
  1628. void
  1629. tsetmode(bool priv, bool set, int *args, int narg) {
  1630. int *lim, mode;
  1631. bool alt;
  1632. for(lim = args + narg; args < lim; ++args) {
  1633. if(priv) {
  1634. switch(*args) {
  1635. case 1: /* DECCKM -- Cursor key */
  1636. MODBIT(term.mode, set, MODE_APPCURSOR);
  1637. break;
  1638. case 5: /* DECSCNM -- Reverse video */
  1639. mode = term.mode;
  1640. MODBIT(term.mode, set, MODE_REVERSE);
  1641. if(mode != term.mode)
  1642. redraw();
  1643. break;
  1644. case 6: /* DECOM -- Origin */
  1645. MODBIT(term.c.state, set, CURSOR_ORIGIN);
  1646. tmoveato(0, 0);
  1647. break;
  1648. case 7: /* DECAWM -- Auto wrap */
  1649. MODBIT(term.mode, set, MODE_WRAP);
  1650. break;
  1651. case 0: /* Error (IGNORED) */
  1652. case 2: /* DECANM -- ANSI/VT52 (IGNORED) */
  1653. case 3: /* DECCOLM -- Column (IGNORED) */
  1654. case 4: /* DECSCLM -- Scroll (IGNORED) */
  1655. case 8: /* DECARM -- Auto repeat (IGNORED) */
  1656. case 18: /* DECPFF -- Printer feed (IGNORED) */
  1657. case 19: /* DECPEX -- Printer extent (IGNORED) */
  1658. case 42: /* DECNRCM -- National characters (IGNORED) */
  1659. case 12: /* att610 -- Start blinking cursor (IGNORED) */
  1660. break;
  1661. case 25: /* DECTCEM -- Text Cursor Enable Mode */
  1662. MODBIT(term.mode, !set, MODE_HIDE);
  1663. break;
  1664. case 9: /* X10 mouse compatibility mode */
  1665. xsetpointermotion(0);
  1666. MODBIT(term.mode, 0, MODE_MOUSE);
  1667. MODBIT(term.mode, set, MODE_MOUSEX10);
  1668. break;
  1669. case 1000: /* 1000: report button press */
  1670. xsetpointermotion(0);
  1671. MODBIT(term.mode, 0, MODE_MOUSE);
  1672. MODBIT(term.mode, set, MODE_MOUSEBTN);
  1673. break;
  1674. case 1002: /* 1002: report motion on button press */
  1675. xsetpointermotion(0);
  1676. MODBIT(term.mode, 0, MODE_MOUSE);
  1677. MODBIT(term.mode, set, MODE_MOUSEMOTION);
  1678. break;
  1679. case 1003: /* 1003: enable all mouse motions */
  1680. xsetpointermotion(set);
  1681. MODBIT(term.mode, 0, MODE_MOUSE);
  1682. MODBIT(term.mode, set, MODE_MOUSEMANY);
  1683. break;
  1684. case 1004: /* 1004: send focus events to tty */
  1685. MODBIT(term.mode, set, MODE_FOCUS);
  1686. break;
  1687. case 1006: /* 1006: extended reporting mode */
  1688. MODBIT(term.mode, set, MODE_MOUSESGR);
  1689. break;
  1690. case 1034:
  1691. MODBIT(term.mode, set, MODE_8BIT);
  1692. break;
  1693. case 1049: /* swap screen & set/restore cursor as xterm */
  1694. if (!allowaltscreen)
  1695. break;
  1696. tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
  1697. /* FALLTHROUGH */
  1698. case 47: /* swap screen */
  1699. case 1047:
  1700. if (!allowaltscreen)
  1701. break;
  1702. alt = IS_SET(MODE_ALTSCREEN);
  1703. if(alt) {
  1704. tclearregion(0, 0, term.col-1,
  1705. term.row-1);
  1706. }
  1707. if(set ^ alt) /* set is always 1 or 0 */
  1708. tswapscreen();
  1709. if(*args != 1049)
  1710. break;
  1711. /* FALLTHROUGH */
  1712. case 1048:
  1713. tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD);
  1714. break;
  1715. case 2004: /* 2004: bracketed paste mode */
  1716. MODBIT(term.mode, set, MODE_BRCKTPASTE);
  1717. break;
  1718. /* Not implemented mouse modes. See comments there. */
  1719. case 1001: /* mouse highlight mode; can hang the
  1720. terminal by design when implemented. */
  1721. case 1005: /* UTF-8 mouse mode; will confuse
  1722. applications not supporting UTF-8
  1723. and luit. */
  1724. case 1015: /* urxvt mangled mouse mode; incompatible
  1725. and can be mistaken for other control
  1726. codes. */
  1727. default:
  1728. fprintf(stderr,
  1729. "erresc: unknown private set/reset mode %d\n",
  1730. *args);
  1731. break;
  1732. }
  1733. } else {
  1734. switch(*args) {
  1735. case 0: /* Error (IGNORED) */
  1736. break;
  1737. case 2: /* KAM -- keyboard action */
  1738. MODBIT(term.mode, set, MODE_KBDLOCK);
  1739. break;
  1740. case 4: /* IRM -- Insertion-replacement */
  1741. MODBIT(term.mode, set, MODE_INSERT);
  1742. break;
  1743. case 12: /* SRM -- Send/Receive */
  1744. MODBIT(term.mode, !set, MODE_ECHO);
  1745. break;
  1746. case 20: /* LNM -- Linefeed/new line */
  1747. MODBIT(term.mode, set, MODE_CRLF);
  1748. break;
  1749. default:
  1750. fprintf(stderr,
  1751. "erresc: unknown set/reset mode %d\n",
  1752. *args);
  1753. break;
  1754. }
  1755. }
  1756. }
  1757. }
  1758. void
  1759. csihandle(void) {
  1760. char buf[40];
  1761. int len;
  1762. switch(csiescseq.mode[0]) {
  1763. default:
  1764. unknown:
  1765. fprintf(stderr, "erresc: unknown csi ");
  1766. csidump();
  1767. /* die(""); */
  1768. break;
  1769. case '@': /* ICH -- Insert <n> blank char */
  1770. DEFAULT(csiescseq.arg[0], 1);
  1771. tinsertblank(csiescseq.arg[0]);
  1772. break;
  1773. case 'A': /* CUU -- Cursor <n> Up */
  1774. DEFAULT(csiescseq.arg[0], 1);
  1775. tmoveto(term.c.x, term.c.y-csiescseq.arg[0]);
  1776. break;
  1777. case 'B': /* CUD -- Cursor <n> Down */
  1778. case 'e': /* VPR --Cursor <n> Down */
  1779. DEFAULT(csiescseq.arg[0], 1);
  1780. tmoveto(term.c.x, term.c.y+csiescseq.arg[0]);
  1781. break;
  1782. case 'i': /* MC -- Media Copy */
  1783. switch(csiescseq.arg[0]) {
  1784. case 0:
  1785. tdump();
  1786. break;
  1787. case 1:
  1788. tdumpline(term.c.y);
  1789. break;
  1790. case 2:
  1791. tdumpsel();
  1792. break;
  1793. case 4:
  1794. term.mode &= ~MODE_PRINT;
  1795. break;
  1796. case 5:
  1797. term.mode |= MODE_PRINT;
  1798. break;
  1799. }
  1800. break;
  1801. case 'c': /* DA -- Device Attributes */
  1802. if(csiescseq.arg[0] == 0)
  1803. ttywrite(vtiden, sizeof(vtiden) - 1);
  1804. break;
  1805. case 'C': /* CUF -- Cursor <n> Forward */
  1806. case 'a': /* HPR -- Cursor <n> Forward */
  1807. DEFAULT(csiescseq.arg[0], 1);
  1808. tmoveto(term.c.x+csiescseq.arg[0], term.c.y);
  1809. break;
  1810. case 'D': /* CUB -- Cursor <n> Backward */
  1811. DEFAULT(csiescseq.arg[0], 1);
  1812. tmoveto(term.c.x-csiescseq.arg[0], term.c.y);
  1813. break;
  1814. case 'E': /* CNL -- Cursor <n> Down and first col */
  1815. DEFAULT(csiescseq.arg[0], 1);
  1816. tmoveto(0, term.c.y+csiescseq.arg[0]);
  1817. break;
  1818. case 'F': /* CPL -- Cursor <n> Up and first col */
  1819. DEFAULT(csiescseq.arg[0], 1);
  1820. tmoveto(0, term.c.y-csiescseq.arg[0]);
  1821. break;
  1822. case 'g': /* TBC -- Tabulation clear */
  1823. switch(csiescseq.arg[0]) {
  1824. case 0: /* clear current tab stop */
  1825. term.tabs[term.c.x] = 0;
  1826. break;
  1827. case 3: /* clear all the tabs */
  1828. memset(term.tabs, 0, term.col * sizeof(*term.tabs));
  1829. break;
  1830. default:
  1831. goto unknown;
  1832. }
  1833. break;
  1834. case 'G': /* CHA -- Move to <col> */
  1835. case '`': /* HPA */
  1836. DEFAULT(csiescseq.arg[0], 1);
  1837. tmoveto(csiescseq.arg[0]-1, term.c.y);
  1838. break;
  1839. case 'H': /* CUP -- Move to <row> <col> */
  1840. case 'f': /* HVP */
  1841. DEFAULT(csiescseq.arg[0], 1);
  1842. DEFAULT(csiescseq.arg[1], 1);
  1843. tmoveato(csiescseq.arg[1]-1, csiescseq.arg[0]-1);
  1844. break;
  1845. case 'I': /* CHT -- Cursor Forward Tabulation <n> tab stops */
  1846. DEFAULT(csiescseq.arg[0], 1);
  1847. tputtab(csiescseq.arg[0]);
  1848. break;
  1849. case 'J': /* ED -- Clear screen */
  1850. selclear(NULL);
  1851. switch(csiescseq.arg[0]) {
  1852. case 0: /* below */
  1853. tclearregion(term.c.x, term.c.y, term.col-1, term.c.y);
  1854. if(term.c.y < term.row-1) {
  1855. tclearregion(0, term.c.y+1, term.col-1,
  1856. term.row-1);
  1857. }
  1858. break;
  1859. case 1: /* above */
  1860. if(term.c.y > 1)
  1861. tclearregion(0, 0, term.col-1, term.c.y-1);
  1862. tclearregion(0, term.c.y, term.c.x, term.c.y);
  1863. break;
  1864. case 2: /* all */
  1865. tclearregion(0, 0, term.col-1, term.row-1);
  1866. break;
  1867. default:
  1868. goto unknown;
  1869. }
  1870. break;
  1871. case 'K': /* EL -- Clear line */
  1872. switch(csiescseq.arg[0]) {
  1873. case 0: /* right */
  1874. tclearregion(term.c.x, term.c.y, term.col-1,
  1875. term.c.y);
  1876. break;
  1877. case 1: /* left */
  1878. tclearregion(0, term.c.y, term.c.x, term.c.y);
  1879. break;
  1880. case 2: /* all */
  1881. tclearregion(0, term.c.y, term.col-1, term.c.y);
  1882. break;
  1883. }
  1884. break;
  1885. case 'S': /* SU -- Scroll <n> line up */
  1886. DEFAULT(csiescseq.arg[0], 1);
  1887. tscrollup(term.top, csiescseq.arg[0]);
  1888. break;
  1889. case 'T': /* SD -- Scroll <n> line down */
  1890. DEFAULT(csiescseq.arg[0], 1);
  1891. tscrolldown(term.top, csiescseq.arg[0]);
  1892. break;
  1893. case 'L': /* IL -- Insert <n> blank lines */
  1894. DEFAULT(csiescseq.arg[0], 1);
  1895. tinsertblankline(csiescseq.arg[0]);
  1896. break;
  1897. case 'l': /* RM -- Reset Mode */
  1898. tsetmode(csiescseq.priv, 0, csiescseq.arg, csiescseq.narg);
  1899. break;
  1900. case 'M': /* DL -- Delete <n> lines */
  1901. DEFAULT(csiescseq.arg[0], 1);
  1902. tdeleteline(csiescseq.arg[0]);
  1903. break;
  1904. case 'X': /* ECH -- Erase <n> char */
  1905. DEFAULT(csiescseq.arg[0], 1);
  1906. tclearregion(term.c.x, term.c.y,
  1907. term.c.x + csiescseq.arg[0] - 1, term.c.y);
  1908. break;
  1909. case 'P': /* DCH -- Delete <n> char */
  1910. DEFAULT(csiescseq.arg[0], 1);
  1911. tdeletechar(csiescseq.arg[0]);
  1912. break;
  1913. case 'Z': /* CBT -- Cursor Backward Tabulation <n> tab stops */
  1914. DEFAULT(csiescseq.arg[0], 1);
  1915. tputtab(-csiescseq.arg[0]);
  1916. break;
  1917. case 'd': /* VPA -- Move to <row> */
  1918. DEFAULT(csiescseq.arg[0], 1);
  1919. tmoveato(term.c.x, csiescseq.arg[0]-1);
  1920. break;
  1921. case 'h': /* SM -- Set terminal mode */
  1922. tsetmode(csiescseq.priv, 1, csiescseq.arg, csiescseq.narg);
  1923. break;
  1924. case 'm': /* SGR -- Terminal attribute (color) */
  1925. tsetattr(csiescseq.arg, csiescseq.narg);
  1926. break;
  1927. case 'n': /* DSR – Device Status Report (cursor position) */
  1928. if (csiescseq.arg[0] == 6) {
  1929. len = snprintf(buf, sizeof(buf),"\033[%i;%iR",
  1930. term.c.y+1, term.c.x+1);
  1931. ttywrite(buf, len);
  1932. }
  1933. break;
  1934. case 'r': /* DECSTBM -- Set Scrolling Region */
  1935. if(csiescseq.priv) {
  1936. goto unknown;
  1937. } else {
  1938. DEFAULT(csiescseq.arg[0], 1);
  1939. DEFAULT(csiescseq.arg[1], term.row);
  1940. tsetscroll(csiescseq.arg[0]-1, csiescseq.arg[1]-1);
  1941. tmoveato(0, 0);
  1942. }
  1943. break;
  1944. case 's': /* DECSC -- Save cursor position (ANSI.SYS) */
  1945. tcursor(CURSOR_SAVE);
  1946. break;
  1947. case 'u': /* DECRC -- Restore cursor position (ANSI.SYS) */
  1948. tcursor(CURSOR_LOAD);
  1949. break;
  1950. case ' ':
  1951. switch (csiescseq.mode[1]) {
  1952. case 'q': /* DECSCUSR -- Set Cursor Style */
  1953. DEFAULT(csiescseq.arg[0], 1);
  1954. if (!BETWEEN(csiescseq.arg[0], 0, 6)) {
  1955. goto unknown;
  1956. }
  1957. xw.cursor = csiescseq.arg[0];
  1958. break;
  1959. default:
  1960. goto unknown;
  1961. }
  1962. break;
  1963. }
  1964. }
  1965. void
  1966. csidump(void) {
  1967. int i;
  1968. uint c;
  1969. printf("ESC[");
  1970. for(i = 0; i < csiescseq.len; i++) {
  1971. c = csiescseq.buf[i] & 0xff;
  1972. if(isprint(c)) {
  1973. putchar(c);
  1974. } else if(c == '\n') {
  1975. printf("(\\n)");
  1976. } else if(c == '\r') {
  1977. printf("(\\r)");
  1978. } else if(c == 0x1b) {
  1979. printf("(\\e)");
  1980. } else {
  1981. printf("(%02x)", c);
  1982. }
  1983. }
  1984. putchar('\n');
  1985. }
  1986. void
  1987. csireset(void) {
  1988. memset(&csiescseq, 0, sizeof(csiescseq));
  1989. }
  1990. void
  1991. strhandle(void) {
  1992. char *p = NULL;
  1993. int j, narg, par;
  1994. term.esc &= ~(ESC_STR_END|ESC_STR);
  1995. strparse();
  1996. narg = strescseq.narg;
  1997. par = atoi(strescseq.args[0]);
  1998. switch(strescseq.type) {
  1999. case ']': /* OSC -- Operating System Command */
  2000. switch(par) {
  2001. case 0:
  2002. case 1:
  2003. case 2:
  2004. if(narg > 1)
  2005. xsettitle(strescseq.args[1]);
  2006. return;
  2007. case 4: /* color set */
  2008. if(narg < 3)
  2009. break;
  2010. p = strescseq.args[2];
  2011. /* FALLTHROUGH */
  2012. case 104: /* color reset, here p = NULL */
  2013. j = (narg > 1) ? atoi(strescseq.args[1]) : -1;
  2014. if(xsetcolorname(j, p)) {
  2015. fprintf(stderr, "erresc: invalid color %s\n", p);
  2016. } else {
  2017. /*
  2018. * TODO if defaultbg color is changed, borders
  2019. * are dirty
  2020. */
  2021. redraw();
  2022. }
  2023. return;
  2024. }
  2025. break;
  2026. case 'k': /* old title set compatibility */
  2027. xsettitle(strescseq.args[0]);
  2028. return;
  2029. case 'P': /* DCS -- Device Control String */
  2030. case '_': /* APC -- Application Program Command */
  2031. case '^': /* PM -- Privacy Message */
  2032. return;
  2033. }
  2034. fprintf(stderr, "erresc: unknown str ");
  2035. strdump();
  2036. }
  2037. void
  2038. strparse(void) {
  2039. int c;
  2040. char *p = strescseq.buf;
  2041. strescseq.narg = 0;
  2042. strescseq.buf[strescseq.len] = '\0';
  2043. if(*p == '\0')
  2044. return;
  2045. while(strescseq.narg < STR_ARG_SIZ) {
  2046. strescseq.args[strescseq.narg++] = p;
  2047. while((c = *p) != ';' && c != '\0')
  2048. ++p;
  2049. if(c == '\0')
  2050. return;
  2051. *p++ = '\0';
  2052. }
  2053. }
  2054. void
  2055. strdump(void) {
  2056. int i;
  2057. uint c;
  2058. printf("ESC%c", strescseq.type);
  2059. for(i = 0; i < strescseq.len; i++) {
  2060. c = strescseq.buf[i] & 0xff;
  2061. if(c == '\0') {
  2062. return;
  2063. } else if(isprint(c)) {
  2064. putchar(c);
  2065. } else if(c == '\n') {
  2066. printf("(\\n)");
  2067. } else if(c == '\r') {
  2068. printf("(\\r)");
  2069. } else if(c == 0x1b) {
  2070. printf("(\\e)");
  2071. } else {
  2072. printf("(%02x)", c);
  2073. }
  2074. }
  2075. printf("ESC\\\n");
  2076. }
  2077. void
  2078. strreset(void) {
  2079. memset(&strescseq, 0, sizeof(strescseq));
  2080. }
  2081. void
  2082. tprinter(char *s, size_t len) {
  2083. if(iofd != -1 && xwrite(iofd, s, len) < 0) {
  2084. fprintf(stderr, "Error writing in %s:%s\n",
  2085. opt_io, strerror(errno));
  2086. close(iofd);
  2087. iofd = -1;
  2088. }
  2089. }
  2090. void
  2091. toggleprinter(const Arg *arg) {
  2092. term.mode ^= MODE_PRINT;
  2093. }
  2094. void
  2095. printscreen(const Arg *arg) {
  2096. tdump();
  2097. }
  2098. void
  2099. printsel(const Arg *arg) {
  2100. tdumpsel();
  2101. }
  2102. void
  2103. tdumpsel(void) {
  2104. char *ptr;
  2105. if((ptr = getsel())) {
  2106. tprinter(ptr, strlen(ptr));
  2107. free(ptr);
  2108. }
  2109. }
  2110. void
  2111. tdumpline(int n) {
  2112. Glyph *bp, *end;
  2113. bp = &term.line[n][0];
  2114. end = &bp[MIN(tlinelen(n), term.col) - 1];
  2115. if(bp != end || bp->c[0] != ' ') {
  2116. for( ;bp <= end; ++bp)
  2117. tprinter(bp->c, utf8len(bp->c));
  2118. }
  2119. tprinter("\n", 1);
  2120. }
  2121. void
  2122. tdump(void) {
  2123. int i;
  2124. for(i = 0; i < term.row; ++i)
  2125. tdumpline(i);
  2126. }
  2127. void
  2128. tputtab(int n) {
  2129. uint x = term.c.x;
  2130. if(n > 0) {
  2131. while(x < term.col && n--)
  2132. for(++x; x < term.col && !term.tabs[x]; ++x)
  2133. /* nothing */ ;
  2134. } else if(n < 0) {
  2135. while(x > 0 && n++)
  2136. for(--x; x > 0 && !term.tabs[x]; --x)
  2137. /* nothing */ ;
  2138. }
  2139. term.c.x = LIMIT(x, 0, term.col-1);
  2140. }
  2141. void
  2142. techo(char *buf, int len) {
  2143. for(; len > 0; buf++, len--) {
  2144. char c = *buf;
  2145. if(ISCONTROL((uchar) c)) { /* control code */
  2146. if(c & 0x80) {
  2147. c &= 0x7f;
  2148. tputc("^", 1);
  2149. tputc("[", 1);
  2150. } else if(c != '\n' && c != '\r' && c != '\t') {
  2151. c ^= 0x40;
  2152. tputc("^", 1);
  2153. }
  2154. tputc(&c, 1);
  2155. } else {
  2156. break;
  2157. }
  2158. }
  2159. if(len)
  2160. tputc(buf, len);
  2161. }
  2162. void
  2163. tdeftran(char ascii) {
  2164. static char cs[] = "0B";
  2165. static int vcs[] = {CS_GRAPHIC0, CS_USA};
  2166. char *p;
  2167. if((p = strchr(cs, ascii)) == NULL) {
  2168. fprintf(stderr, "esc unhandled charset: ESC ( %c\n", ascii);
  2169. } else {
  2170. term.trantbl[term.icharset] = vcs[p - cs];
  2171. }
  2172. }
  2173. void
  2174. tdectest(char c) {
  2175. static char E[UTF_SIZ] = "E";
  2176. int x, y;
  2177. if(c == '8') { /* DEC screen alignment test. */
  2178. for(x = 0; x < term.col; ++x) {
  2179. for(y = 0; y < term.row; ++y)
  2180. tsetchar(E, &term.c.attr, x, y);
  2181. }
  2182. }
  2183. }
  2184. void
  2185. tstrsequence(uchar c) {
  2186. if (c & 0x80) {
  2187. switch (c) {
  2188. case 0x90: /* DCS -- Device Control String */
  2189. c = 'P';
  2190. break;
  2191. case 0x9f: /* APC -- Application Program Command */
  2192. c = '_';
  2193. break;
  2194. case 0x9e: /* PM -- Privacy Message */
  2195. c = '^';
  2196. break;
  2197. case 0x9d: /* OSC -- Operating System Command */
  2198. c = ']';
  2199. break;
  2200. }
  2201. }
  2202. strreset();
  2203. strescseq.type = c;
  2204. term.esc |= ESC_STR;
  2205. return;
  2206. }
  2207. void
  2208. tcontrolcode(uchar ascii) {
  2209. static char question[UTF_SIZ] = "?";
  2210. switch(ascii) {
  2211. case '\t': /* HT */
  2212. tputtab(1);
  2213. return;
  2214. case '\b': /* BS */
  2215. tmoveto(term.c.x-1, term.c.y);
  2216. return;
  2217. case '\r': /* CR */
  2218. tmoveto(0, term.c.y);
  2219. return;
  2220. case '\f': /* LF */
  2221. case '\v': /* VT */
  2222. case '\n': /* LF */
  2223. /* go to first col if the mode is set */
  2224. tnewline(IS_SET(MODE_CRLF));
  2225. return;
  2226. case '\a': /* BEL */
  2227. if(term.esc & ESC_STR_END) {
  2228. /* backwards compatibility to xterm */
  2229. strhandle();
  2230. } else {
  2231. if(!(xw.state & WIN_FOCUSED))
  2232. xseturgency(1);
  2233. if (bellvolume)
  2234. XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
  2235. }
  2236. break;
  2237. case '\033': /* ESC */
  2238. csireset();
  2239. term.esc &= ~(ESC_CSI|ESC_ALTCHARSET|ESC_TEST);
  2240. term.esc |= ESC_START;
  2241. return;
  2242. case '\016': /* SO (LS1 -- Locking shift 1) */
  2243. case '\017': /* SI (LS0 -- Locking shift 0) */
  2244. term.charset = 1 - (ascii - '\016');
  2245. return;
  2246. case '\032': /* SUB */
  2247. tsetchar(question, &term.c.attr, term.c.x, term.c.y);
  2248. case '\030': /* CAN */
  2249. csireset();
  2250. break;
  2251. case '\005': /* ENQ (IGNORED) */
  2252. case '\000': /* NUL (IGNORED) */
  2253. case '\021': /* XON (IGNORED) */
  2254. case '\023': /* XOFF (IGNORED) */
  2255. case 0177: /* DEL (IGNORED) */
  2256. return;
  2257. case 0x84: /* TODO: IND */
  2258. break;
  2259. case 0x85: /* NEL -- Next line */
  2260. tnewline(1); /* always go to first col */
  2261. break;
  2262. case 0x88: /* HTS -- Horizontal tab stop */
  2263. term.tabs[term.c.x] = 1;
  2264. break;
  2265. case 0x8d: /* TODO: RI */
  2266. case 0x8e: /* TODO: SS2 */
  2267. case 0x8f: /* TODO: SS3 */
  2268. case 0x98: /* TODO: SOS */
  2269. break;
  2270. case 0x9a: /* DECID -- Identify Terminal */
  2271. ttywrite(vtiden, sizeof(vtiden) - 1);
  2272. break;
  2273. case 0x9b: /* TODO: CSI */
  2274. case 0x9c: /* TODO: ST */
  2275. break;
  2276. case 0x90: /* DCS -- Device Control String */
  2277. case 0x9f: /* APC -- Application Program Command */
  2278. case 0x9e: /* PM -- Privacy Message */
  2279. case 0x9d: /* OSC -- Operating System Command */
  2280. tstrsequence(ascii);
  2281. return;
  2282. }
  2283. /* only CAN, SUB, \a and C1 chars interrupt a sequence */
  2284. term.esc &= ~(ESC_STR_END|ESC_STR);
  2285. return;
  2286. }
  2287. /*
  2288. * returns 1 when the sequence is finished and it hasn't to read
  2289. * more characters for this sequence, otherwise 0
  2290. */
  2291. int
  2292. eschandle(uchar ascii) {
  2293. switch(ascii) {
  2294. case '[':
  2295. term.esc |= ESC_CSI;
  2296. return 0;
  2297. case '#':
  2298. term.esc |= ESC_TEST;
  2299. return 0;
  2300. case 'P': /* DCS -- Device Control String */
  2301. case '_': /* APC -- Application Program Command */
  2302. case '^': /* PM -- Privacy Message */
  2303. case ']': /* OSC -- Operating System Command */
  2304. case 'k': /* old title set compatibility */
  2305. tstrsequence(ascii);
  2306. return 0;
  2307. case 'n': /* LS2 -- Locking shift 2 */
  2308. case 'o': /* LS3 -- Locking shift 3 */
  2309. term.charset = 2 + (ascii - 'n');
  2310. break;
  2311. case '(': /* GZD4 -- set primary charset G0 */
  2312. case ')': /* G1D4 -- set secondary charset G1 */
  2313. case '*': /* G2D4 -- set tertiary charset G2 */
  2314. case '+': /* G3D4 -- set quaternary charset G3 */
  2315. term.icharset = ascii - '(';
  2316. term.esc |= ESC_ALTCHARSET;
  2317. return 0;
  2318. case 'D': /* IND -- Linefeed */
  2319. if(term.c.y == term.bot) {
  2320. tscrollup(term.top, 1);
  2321. } else {
  2322. tmoveto(term.c.x, term.c.y+1);
  2323. }
  2324. break;
  2325. case 'E': /* NEL -- Next line */
  2326. tnewline(1); /* always go to first col */
  2327. break;
  2328. case 'H': /* HTS -- Horizontal tab stop */
  2329. term.tabs[term.c.x] = 1;
  2330. break;
  2331. case 'M': /* RI -- Reverse index */
  2332. if(term.c.y == term.top) {
  2333. tscrolldown(term.top, 1);
  2334. } else {
  2335. tmoveto(term.c.x, term.c.y-1);
  2336. }
  2337. break;
  2338. case 'Z': /* DECID -- Identify Terminal */
  2339. ttywrite(vtiden, sizeof(vtiden) - 1);
  2340. break;
  2341. case 'c': /* RIS -- Reset to inital state */
  2342. treset();
  2343. xresettitle();
  2344. xloadcols();
  2345. break;
  2346. case '=': /* DECPAM -- Application keypad */
  2347. term.mode |= MODE_APPKEYPAD;
  2348. break;
  2349. case '>': /* DECPNM -- Normal keypad */
  2350. term.mode &= ~MODE_APPKEYPAD;
  2351. break;
  2352. case '7': /* DECSC -- Save Cursor */
  2353. tcursor(CURSOR_SAVE);
  2354. break;
  2355. case '8': /* DECRC -- Restore Cursor */
  2356. tcursor(CURSOR_LOAD);
  2357. break;
  2358. case '\\': /* ST -- String Terminator */
  2359. if(term.esc & ESC_STR_END)
  2360. strhandle();
  2361. break;
  2362. default:
  2363. fprintf(stderr, "erresc: unknown sequence ESC 0x%02X '%c'\n",
  2364. (uchar) ascii, isprint(ascii)? ascii:'.');
  2365. break;
  2366. }
  2367. return 1;
  2368. }
  2369. void
  2370. tputc(char *c, int len) {
  2371. uchar ascii;
  2372. bool control;
  2373. long unicodep;
  2374. int width;
  2375. Glyph *gp;
  2376. if(len == 1) {
  2377. width = 1;
  2378. unicodep = ascii = *c;
  2379. } else {
  2380. utf8decode(c, &unicodep, UTF_SIZ);
  2381. if ((width = wcwidth(unicodep)) == -1) {
  2382. c = "\357\277\275"; /* UTF_INVALID */
  2383. width = 1;
  2384. }
  2385. ascii = unicodep;
  2386. }
  2387. if(IS_SET(MODE_PRINT))
  2388. tprinter(c, len);
  2389. control = ISCONTROL(unicodep);
  2390. /*
  2391. * STR sequence must be checked before anything else
  2392. * because it uses all following characters until it
  2393. * receives a ESC, a SUB, a ST or any other C1 control
  2394. * character.
  2395. */
  2396. if(term.esc & ESC_STR) {
  2397. if(len == 1 &&
  2398. (ascii == '\a' || ascii == 030 ||
  2399. ascii == 032 || ascii == 033 ||
  2400. ISCONTROLC1(unicodep))) {
  2401. term.esc &= ~(ESC_START|ESC_STR);
  2402. term.esc |= ESC_STR_END;
  2403. } else if(strescseq.len + len < sizeof(strescseq.buf) - 1) {
  2404. memmove(&strescseq.buf[strescseq.len], c, len);
  2405. strescseq.len += len;
  2406. return;
  2407. } else {
  2408. /*
  2409. * Here is a bug in terminals. If the user never sends
  2410. * some code to stop the str or esc command, then st
  2411. * will stop responding. But this is better than
  2412. * silently failing with unknown characters. At least
  2413. * then users will report back.
  2414. *
  2415. * In the case users ever get fixed, here is the code:
  2416. */
  2417. /*
  2418. * term.esc = 0;
  2419. * strhandle();
  2420. */
  2421. return;
  2422. }
  2423. }
  2424. /*
  2425. * Actions of control codes must be performed as soon they arrive
  2426. * because they can be embedded inside a control sequence, and
  2427. * they must not cause conflicts with sequences.
  2428. */
  2429. if(control) {
  2430. tcontrolcode(ascii);
  2431. /*
  2432. * control codes are not shown ever
  2433. */
  2434. return;
  2435. } else if(term.esc & ESC_START) {
  2436. if(term.esc & ESC_CSI) {
  2437. csiescseq.buf[csiescseq.len++] = ascii;
  2438. if(BETWEEN(ascii, 0x40, 0x7E)
  2439. || csiescseq.len >= \
  2440. sizeof(csiescseq.buf)-1) {
  2441. term.esc = 0;
  2442. csiparse();
  2443. csihandle();
  2444. }
  2445. return;
  2446. } else if(term.esc & ESC_ALTCHARSET) {
  2447. tdeftran(ascii);
  2448. } else if(term.esc & ESC_TEST) {
  2449. tdectest(ascii);
  2450. } else {
  2451. if (!eschandle(ascii))
  2452. return;
  2453. /* sequence already finished */
  2454. }
  2455. term.esc = 0;
  2456. /*
  2457. * All characters which form part of a sequence are not
  2458. * printed
  2459. */
  2460. return;
  2461. }
  2462. if(sel.ob.x != -1 && BETWEEN(term.c.y, sel.ob.y, sel.oe.y))
  2463. selclear(NULL);
  2464. gp = &term.line[term.c.y][term.c.x];
  2465. if(IS_SET(MODE_WRAP) && (term.c.state & CURSOR_WRAPNEXT)) {
  2466. gp->mode |= ATTR_WRAP;
  2467. tnewline(1);
  2468. gp = &term.line[term.c.y][term.c.x];
  2469. }
  2470. if(IS_SET(MODE_INSERT) && term.c.x+width < term.col)
  2471. memmove(gp+width, gp, (term.col - term.c.x - width) * sizeof(Glyph));
  2472. if(term.c.x+width > term.col) {
  2473. tnewline(1);
  2474. gp = &term.line[term.c.y][term.c.x];
  2475. }
  2476. tsetchar(c, &term.c.attr, term.c.x, term.c.y);
  2477. if(width == 2) {
  2478. gp->mode |= ATTR_WIDE;
  2479. if(term.c.x+1 < term.col) {
  2480. gp[1].c[0] = '\0';
  2481. gp[1].mode = ATTR_WDUMMY;
  2482. }
  2483. }
  2484. if(term.c.x+width < term.col) {
  2485. tmoveto(term.c.x+width, term.c.y);
  2486. } else {
  2487. term.c.state |= CURSOR_WRAPNEXT;
  2488. }
  2489. }
  2490. void
  2491. tresize(int col, int row) {
  2492. int i;
  2493. int minrow = MIN(row, term.row);
  2494. int mincol = MIN(col, term.col);
  2495. int slide = term.c.y - row + 1;
  2496. bool *bp;
  2497. TCursor c;
  2498. if(col < 1 || row < 1) {
  2499. fprintf(stderr,
  2500. "tresize: error resizing to %dx%d\n", col, row);
  2501. return;
  2502. }
  2503. /* free unneeded rows */
  2504. i = 0;
  2505. if(slide > 0) {
  2506. /*
  2507. * slide screen to keep cursor where we expect it -
  2508. * tscrollup would work here, but we can optimize to
  2509. * memmove because we're freeing the earlier lines
  2510. */
  2511. for(/* i = 0 */; i < slide; i++) {
  2512. free(term.line[i]);
  2513. free(term.alt[i]);
  2514. }
  2515. memmove(term.line, term.line + slide, row * sizeof(Line));
  2516. memmove(term.alt, term.alt + slide, row * sizeof(Line));
  2517. }
  2518. for(i += row; i < term.row; i++) {
  2519. free(term.line[i]);
  2520. free(term.alt[i]);
  2521. }
  2522. /* resize to new height */
  2523. term.line = xrealloc(term.line, row * sizeof(Line));
  2524. term.alt = xrealloc(term.alt, row * sizeof(Line));
  2525. term.dirty = xrealloc(term.dirty, row * sizeof(*term.dirty));
  2526. term.tabs = xrealloc(term.tabs, col * sizeof(*term.tabs));
  2527. /* resize each row to new width, zero-pad if needed */
  2528. for(i = 0; i < minrow; i++) {
  2529. term.line[i] = xrealloc(term.line[i], col * sizeof(Glyph));
  2530. term.alt[i] = xrealloc(term.alt[i], col * sizeof(Glyph));
  2531. }
  2532. /* allocate any new rows */
  2533. for(/* i == minrow */; i < row; i++) {
  2534. term.line[i] = xmalloc(col * sizeof(Glyph));
  2535. term.alt[i] = xmalloc(col * sizeof(Glyph));
  2536. }
  2537. if(col > term.col) {
  2538. bp = term.tabs + term.col;
  2539. memset(bp, 0, sizeof(*term.tabs) * (col - term.col));
  2540. while(--bp > term.tabs && !*bp)
  2541. /* nothing */ ;
  2542. for(bp += tabspaces; bp < term.tabs + col; bp += tabspaces)
  2543. *bp = 1;
  2544. }
  2545. /* update terminal size */
  2546. term.col = col;
  2547. term.row = row;
  2548. /* reset scrolling region */
  2549. tsetscroll(0, row-1);
  2550. /* make use of the LIMIT in tmoveto */
  2551. tmoveto(term.c.x, term.c.y);
  2552. /* Clearing both screens (it makes dirty all lines) */
  2553. c = term.c;
  2554. for(i = 0; i < 2; i++) {
  2555. if(mincol < col && 0 < minrow) {
  2556. tclearregion(mincol, 0, col - 1, minrow - 1);
  2557. }
  2558. if(0 < col && minrow < row) {
  2559. tclearregion(0, minrow, col - 1, row - 1);
  2560. }
  2561. tswapscreen();
  2562. tcursor(CURSOR_LOAD);
  2563. }
  2564. term.c = c;
  2565. }
  2566. void
  2567. xresize(int col, int row) {
  2568. xw.tw = MAX(1, col * xw.cw);
  2569. xw.th = MAX(1, row * xw.ch);
  2570. XFreePixmap(xw.dpy, xw.buf);
  2571. xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
  2572. DefaultDepth(xw.dpy, xw.scr));
  2573. XftDrawChange(xw.draw, xw.buf);
  2574. xclear(0, 0, xw.w, xw.h);
  2575. }
  2576. ushort
  2577. sixd_to_16bit(int x) {
  2578. return x == 0 ? 0 : 0x3737 + 0x2828 * x;
  2579. }
  2580. void
  2581. xloadcols(void) {
  2582. int i;
  2583. XRenderColor color = { .alpha = 0xffff };
  2584. static bool loaded;
  2585. Color *cp;
  2586. if(loaded) {
  2587. for (cp = dc.col; cp < dc.col + LEN(dc.col); ++cp)
  2588. XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
  2589. }
  2590. /* load colors [0-15] and [256-LEN(colorname)] (config.h) */
  2591. for(i = 0; i < LEN(colorname); i++) {
  2592. if(!colorname[i])
  2593. continue;
  2594. if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, colorname[i], &dc.col[i])) {
  2595. die("Could not allocate color '%s'\n", colorname[i]);
  2596. }
  2597. }
  2598. /* load colors [16-231] ; same colors as xterm */
  2599. for(i = 16; i < 6*6*6+16; i++) {
  2600. color.red = sixd_to_16bit( ((i-16)/36)%6 );
  2601. color.green = sixd_to_16bit( ((i-16)/6) %6 );
  2602. color.blue = sixd_to_16bit( ((i-16)/1) %6 );
  2603. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i]))
  2604. die("Could not allocate color %d\n", i);
  2605. }
  2606. /* load colors [232-255] ; grayscale */
  2607. for(; i < 256; i++) {
  2608. color.red = color.green = color.blue = 0x0808 + 0x0a0a * (i-(6*6*6+16));
  2609. if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[i]))
  2610. die("Could not allocate color %d\n", i);
  2611. }
  2612. loaded = true;
  2613. }
  2614. int
  2615. xsetcolorname(int x, const char *name) {
  2616. XRenderColor color = { .alpha = 0xffff };
  2617. Color ncolor;
  2618. if(!BETWEEN(x, 0, LEN(colorname)))
  2619. return 1;
  2620. if(!name) {
  2621. if(BETWEEN(x, 16, 16 + 215)) { /* 256 color */
  2622. color.red = sixd_to_16bit( ((x-16)/36)%6 );
  2623. color.green = sixd_to_16bit( ((x-16)/6) %6 );
  2624. color.blue = sixd_to_16bit( ((x-16)/1) %6 );
  2625. if(!XftColorAllocValue(xw.dpy, xw.vis,
  2626. xw.cmap, &color, &ncolor)) {
  2627. return 1;
  2628. }
  2629. XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
  2630. dc.col[x] = ncolor;
  2631. return 0;
  2632. } else if(BETWEEN(x, 16 + 216, 255)) { /* greyscale */
  2633. color.red = color.green = color.blue = \
  2634. 0x0808 + 0x0a0a * (x - (16 + 216));
  2635. if(!XftColorAllocValue(xw.dpy, xw.vis,
  2636. xw.cmap, &color, &ncolor)) {
  2637. return 1;
  2638. }
  2639. XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
  2640. dc.col[x] = ncolor;
  2641. return 0;
  2642. } else { /* system colors */
  2643. name = colorname[x];
  2644. }
  2645. }
  2646. if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &ncolor))
  2647. return 1;
  2648. XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
  2649. dc.col[x] = ncolor;
  2650. return 0;
  2651. }
  2652. void
  2653. xtermclear(int col1, int row1, int col2, int row2) {
  2654. XftDrawRect(xw.draw,
  2655. &dc.col[IS_SET(MODE_REVERSE) ? defaultfg : defaultbg],
  2656. borderpx + col1 * xw.cw,
  2657. borderpx + row1 * xw.ch,
  2658. (col2-col1+1) * xw.cw,
  2659. (row2-row1+1) * xw.ch);
  2660. }
  2661. /*
  2662. * Absolute coordinates.
  2663. */
  2664. void
  2665. xclear(int x1, int y1, int x2, int y2) {
  2666. XftDrawRect(xw.draw,
  2667. &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
  2668. x1, y1, x2-x1, y2-y1);
  2669. }
  2670. void
  2671. xhints(void) {
  2672. XClassHint class = {opt_class ? opt_class : termname, termname};
  2673. XWMHints wm = {.flags = InputHint, .input = 1};
  2674. XSizeHints *sizeh = NULL;
  2675. sizeh = XAllocSizeHints();
  2676. sizeh->flags = PSize | PResizeInc | PBaseSize;
  2677. sizeh->height = xw.h;
  2678. sizeh->width = xw.w;
  2679. sizeh->height_inc = xw.ch;
  2680. sizeh->width_inc = xw.cw;
  2681. sizeh->base_height = 2 * borderpx;
  2682. sizeh->base_width = 2 * borderpx;
  2683. if(xw.isfixed == True) {
  2684. sizeh->flags |= PMaxSize | PMinSize;
  2685. sizeh->min_width = sizeh->max_width = xw.w;
  2686. sizeh->min_height = sizeh->max_height = xw.h;
  2687. }
  2688. if(xw.gm & (XValue|YValue)) {
  2689. sizeh->flags |= USPosition | PWinGravity;
  2690. sizeh->x = xw.l;
  2691. sizeh->y = xw.t;
  2692. sizeh->win_gravity = xgeommasktogravity(xw.gm);
  2693. }
  2694. XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
  2695. &class);
  2696. XFree(sizeh);
  2697. }
  2698. int
  2699. xgeommasktogravity(int mask) {
  2700. switch(mask & (XNegative|YNegative)) {
  2701. case 0:
  2702. return NorthWestGravity;
  2703. case XNegative:
  2704. return NorthEastGravity;
  2705. case YNegative:
  2706. return SouthWestGravity;
  2707. }
  2708. return SouthEastGravity;
  2709. }
  2710. int
  2711. xloadfont(Font *f, FcPattern *pattern) {
  2712. FcPattern *match;
  2713. FcResult result;
  2714. match = FcFontMatch(NULL, pattern, &result);
  2715. if(!match)
  2716. return 1;
  2717. if(!(f->match = XftFontOpenPattern(xw.dpy, match))) {
  2718. FcPatternDestroy(match);
  2719. return 1;
  2720. }
  2721. f->set = NULL;
  2722. f->pattern = FcPatternDuplicate(pattern);
  2723. f->ascent = f->match->ascent;
  2724. f->descent = f->match->descent;
  2725. f->lbearing = 0;
  2726. f->rbearing = f->match->max_advance_width;
  2727. f->height = f->ascent + f->descent;
  2728. f->width = f->lbearing + f->rbearing;
  2729. return 0;
  2730. }
  2731. void
  2732. xloadfonts(char *fontstr, double fontsize) {
  2733. FcPattern *pattern;
  2734. FcResult r_sz, r_psz;
  2735. double fontval;
  2736. float ceilf(float);
  2737. if(fontstr[0] == '-') {
  2738. pattern = XftXlfdParse(fontstr, False, False);
  2739. } else {
  2740. pattern = FcNameParse((FcChar8 *)fontstr);
  2741. }
  2742. if(!pattern)
  2743. die("st: can't open font %s\n", fontstr);
  2744. if(fontsize > 1) {
  2745. FcPatternDel(pattern, FC_PIXEL_SIZE);
  2746. FcPatternDel(pattern, FC_SIZE);
  2747. FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
  2748. usedfontsize = fontsize;
  2749. } else {
  2750. r_psz = FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval);
  2751. r_sz = FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval);
  2752. if(r_psz == FcResultMatch) {
  2753. usedfontsize = fontval;
  2754. } else if(r_sz == FcResultMatch) {
  2755. usedfontsize = -1;
  2756. } else {
  2757. /*
  2758. * Default font size is 12, if none given. This is to
  2759. * have a known usedfontsize value.
  2760. */
  2761. FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
  2762. usedfontsize = 12;
  2763. }
  2764. defaultfontsize = usedfontsize;
  2765. }
  2766. FcConfigSubstitute(0, pattern, FcMatchPattern);
  2767. FcDefaultSubstitute(pattern);
  2768. if(xloadfont(&dc.font, pattern))
  2769. die("st: can't open font %s\n", fontstr);
  2770. if(usedfontsize < 0) {
  2771. FcPatternGetDouble(dc.font.match->pattern,
  2772. FC_PIXEL_SIZE, 0, &fontval);
  2773. usedfontsize = fontval;
  2774. if(fontsize == 0)
  2775. defaultfontsize = fontval;
  2776. }
  2777. /* Setting character width and height. */
  2778. xw.cw = ceilf(dc.font.width * cwscale);
  2779. xw.ch = ceilf(dc.font.height * chscale);
  2780. FcPatternDel(pattern, FC_SLANT);
  2781. FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
  2782. if(xloadfont(&dc.ifont, pattern))
  2783. die("st: can't open font %s\n", fontstr);
  2784. FcPatternDel(pattern, FC_WEIGHT);
  2785. FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
  2786. if(xloadfont(&dc.ibfont, pattern))
  2787. die("st: can't open font %s\n", fontstr);
  2788. FcPatternDel(pattern, FC_SLANT);
  2789. FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
  2790. if(xloadfont(&dc.bfont, pattern))
  2791. die("st: can't open font %s\n", fontstr);
  2792. FcPatternDestroy(pattern);
  2793. }
  2794. void
  2795. xunloadfont(Font *f) {
  2796. XftFontClose(xw.dpy, f->match);
  2797. FcPatternDestroy(f->pattern);
  2798. if(f->set)
  2799. FcFontSetDestroy(f->set);
  2800. }
  2801. void
  2802. xunloadfonts(void) {
  2803. /* Free the loaded fonts in the font cache. */
  2804. while(frclen > 0)
  2805. XftFontClose(xw.dpy, frc[--frclen].font);
  2806. xunloadfont(&dc.font);
  2807. xunloadfont(&dc.bfont);
  2808. xunloadfont(&dc.ifont);
  2809. xunloadfont(&dc.ibfont);
  2810. }
  2811. void
  2812. xzoom(const Arg *arg) {
  2813. Arg larg;
  2814. larg.i = usedfontsize + arg->i;
  2815. xzoomabs(&larg);
  2816. }
  2817. void
  2818. xzoomabs(const Arg *arg) {
  2819. xunloadfonts();
  2820. xloadfonts(usedfont, arg->i);
  2821. cresize(0, 0);
  2822. redraw();
  2823. xhints();
  2824. }
  2825. void
  2826. xzoomreset(const Arg *arg) {
  2827. Arg larg;
  2828. if(defaultfontsize > 0) {
  2829. larg.i = defaultfontsize;
  2830. xzoomabs(&larg);
  2831. }
  2832. }
  2833. void
  2834. xinit(void) {
  2835. XGCValues gcvalues;
  2836. Cursor cursor;
  2837. Window parent;
  2838. pid_t thispid = getpid();
  2839. if(!(xw.dpy = XOpenDisplay(NULL)))
  2840. die("Can't open display\n");
  2841. xw.scr = XDefaultScreen(xw.dpy);
  2842. xw.vis = XDefaultVisual(xw.dpy, xw.scr);
  2843. /* font */
  2844. if(!FcInit())
  2845. die("Could not init fontconfig.\n");
  2846. usedfont = (opt_font == NULL)? font : opt_font;
  2847. xloadfonts(usedfont, 0);
  2848. /* colors */
  2849. xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
  2850. xloadcols();
  2851. /* adjust fixed window geometry */
  2852. xw.w = 2 * borderpx + term.col * xw.cw;
  2853. xw.h = 2 * borderpx + term.row * xw.ch;
  2854. if(xw.gm & XNegative)
  2855. xw.l += DisplayWidth(xw.dpy, xw.scr) - xw.w - 2;
  2856. if(xw.gm & YNegative)
  2857. xw.t += DisplayWidth(xw.dpy, xw.scr) - xw.h - 2;
  2858. /* Events */
  2859. xw.attrs.background_pixel = dc.col[defaultbg].pixel;
  2860. xw.attrs.border_pixel = dc.col[defaultbg].pixel;
  2861. xw.attrs.bit_gravity = NorthWestGravity;
  2862. xw.attrs.event_mask = FocusChangeMask | KeyPressMask
  2863. | ExposureMask | VisibilityChangeMask | StructureNotifyMask
  2864. | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
  2865. xw.attrs.colormap = xw.cmap;
  2866. if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
  2867. parent = XRootWindow(xw.dpy, xw.scr);
  2868. xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
  2869. xw.w, xw.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
  2870. xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
  2871. | CWEventMask | CWColormap, &xw.attrs);
  2872. memset(&gcvalues, 0, sizeof(gcvalues));
  2873. gcvalues.graphics_exposures = False;
  2874. dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
  2875. &gcvalues);
  2876. xw.buf = XCreatePixmap(xw.dpy, xw.win, xw.w, xw.h,
  2877. DefaultDepth(xw.dpy, xw.scr));
  2878. XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
  2879. XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, xw.w, xw.h);
  2880. /* Xft rendering context */
  2881. xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
  2882. /* input methods */
  2883. if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
  2884. XSetLocaleModifiers("@im=local");
  2885. if((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
  2886. XSetLocaleModifiers("@im=");
  2887. if((xw.xim = XOpenIM(xw.dpy,
  2888. NULL, NULL, NULL)) == NULL) {
  2889. die("XOpenIM failed. Could not open input"
  2890. " device.\n");
  2891. }
  2892. }
  2893. }
  2894. xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
  2895. | XIMStatusNothing, XNClientWindow, xw.win,
  2896. XNFocusWindow, xw.win, NULL);
  2897. if(xw.xic == NULL)
  2898. die("XCreateIC failed. Could not obtain input method.\n");
  2899. /* white cursor, black outline */
  2900. cursor = XCreateFontCursor(xw.dpy, XC_xterm);
  2901. XDefineCursor(xw.dpy, xw.win, cursor);
  2902. XRecolorCursor(xw.dpy, cursor,
  2903. &(XColor){.red = 0xffff, .green = 0xffff, .blue = 0xffff},
  2904. &(XColor){.red = 0x0000, .green = 0x0000, .blue = 0x0000});
  2905. xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
  2906. xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
  2907. xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
  2908. XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
  2909. xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
  2910. XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
  2911. PropModeReplace, (uchar *)&thispid, 1);
  2912. xresettitle();
  2913. XMapWindow(xw.dpy, xw.win);
  2914. xhints();
  2915. XSync(xw.dpy, False);
  2916. }
  2917. void
  2918. xdraws(char *s, Glyph base, int x, int y, int charlen, int bytelen) {
  2919. int winx = borderpx + x * xw.cw, winy = borderpx + y * xw.ch,
  2920. width = charlen * xw.cw, xp, i;
  2921. int frcflags, charexists;
  2922. int u8fl, u8fblen, u8cblen, doesexist;
  2923. char *u8c, *u8fs;
  2924. long unicodep;
  2925. Font *font = &dc.font;
  2926. FcResult fcres;
  2927. FcPattern *fcpattern, *fontpattern;
  2928. FcFontSet *fcsets[] = { NULL };
  2929. FcCharSet *fccharset;
  2930. Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
  2931. XRenderColor colfg, colbg;
  2932. XRectangle r;
  2933. int oneatatime;
  2934. frcflags = FRC_NORMAL;
  2935. if(base.mode & ATTR_ITALIC) {
  2936. if(base.fg == defaultfg)
  2937. base.fg = defaultitalic;
  2938. font = &dc.ifont;
  2939. frcflags = FRC_ITALIC;
  2940. } else if((base.mode & ATTR_ITALIC) && (base.mode & ATTR_BOLD)) {
  2941. if(base.fg == defaultfg)
  2942. base.fg = defaultitalic;
  2943. font = &dc.ibfont;
  2944. frcflags = FRC_ITALICBOLD;
  2945. } else if(base.mode & ATTR_UNDERLINE) {
  2946. if(base.fg == defaultfg)
  2947. base.fg = defaultunderline;
  2948. }
  2949. if(IS_TRUECOL(base.fg)) {
  2950. colfg.alpha = 0xffff;
  2951. colfg.red = TRUERED(base.fg);
  2952. colfg.green = TRUEGREEN(base.fg);
  2953. colfg.blue = TRUEBLUE(base.fg);
  2954. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
  2955. fg = &truefg;
  2956. } else {
  2957. fg = &dc.col[base.fg];
  2958. }
  2959. if(IS_TRUECOL(base.bg)) {
  2960. colbg.alpha = 0xffff;
  2961. colbg.green = TRUEGREEN(base.bg);
  2962. colbg.red = TRUERED(base.bg);
  2963. colbg.blue = TRUEBLUE(base.bg);
  2964. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
  2965. bg = &truebg;
  2966. } else {
  2967. bg = &dc.col[base.bg];
  2968. }
  2969. if(base.mode & ATTR_BOLD) {
  2970. /*
  2971. * change basic system colors [0-7]
  2972. * to bright system colors [8-15]
  2973. */
  2974. if(BETWEEN(base.fg, 0, 7) && !(base.mode & ATTR_FAINT))
  2975. fg = &dc.col[base.fg + 8];
  2976. if(base.mode & ATTR_ITALIC) {
  2977. font = &dc.ibfont;
  2978. frcflags = FRC_ITALICBOLD;
  2979. } else {
  2980. font = &dc.bfont;
  2981. frcflags = FRC_BOLD;
  2982. }
  2983. }
  2984. if(IS_SET(MODE_REVERSE)) {
  2985. if(fg == &dc.col[defaultfg]) {
  2986. fg = &dc.col[defaultbg];
  2987. } else {
  2988. colfg.red = ~fg->color.red;
  2989. colfg.green = ~fg->color.green;
  2990. colfg.blue = ~fg->color.blue;
  2991. colfg.alpha = fg->color.alpha;
  2992. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
  2993. &revfg);
  2994. fg = &revfg;
  2995. }
  2996. if(bg == &dc.col[defaultbg]) {
  2997. bg = &dc.col[defaultfg];
  2998. } else {
  2999. colbg.red = ~bg->color.red;
  3000. colbg.green = ~bg->color.green;
  3001. colbg.blue = ~bg->color.blue;
  3002. colbg.alpha = bg->color.alpha;
  3003. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
  3004. &revbg);
  3005. bg = &revbg;
  3006. }
  3007. }
  3008. if(base.mode & ATTR_REVERSE) {
  3009. temp = fg;
  3010. fg = bg;
  3011. bg = temp;
  3012. }
  3013. if(base.mode & ATTR_FAINT && !(base.mode & ATTR_BOLD)) {
  3014. colfg.red = fg->color.red / 2;
  3015. colfg.green = fg->color.green / 2;
  3016. colfg.blue = fg->color.blue / 2;
  3017. XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
  3018. fg = &revfg;
  3019. }
  3020. if(base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
  3021. fg = bg;
  3022. if(base.mode & ATTR_INVISIBLE)
  3023. fg = bg;
  3024. /* Intelligent cleaning up of the borders. */
  3025. if(x == 0) {
  3026. xclear(0, (y == 0)? 0 : winy, borderpx,
  3027. winy + xw.ch + ((y >= term.row-1)? xw.h : 0));
  3028. }
  3029. if(x + charlen >= term.col) {
  3030. xclear(winx + width, (y == 0)? 0 : winy, xw.w,
  3031. ((y >= term.row-1)? xw.h : (winy + xw.ch)));
  3032. }
  3033. if(y == 0)
  3034. xclear(winx, 0, winx + width, borderpx);
  3035. if(y == term.row-1)
  3036. xclear(winx, winy + xw.ch, winx + width, xw.h);
  3037. /* Clean up the region we want to draw to. */
  3038. XftDrawRect(xw.draw, bg, winx, winy, width, xw.ch);
  3039. /* Set the clip region because Xft is sometimes dirty. */
  3040. r.x = 0;
  3041. r.y = 0;
  3042. r.height = xw.ch;
  3043. r.width = width;
  3044. XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
  3045. for(xp = winx; bytelen > 0;) {
  3046. /*
  3047. * Search for the range in the to be printed string of glyphs
  3048. * that are in the main font. Then print that range. If
  3049. * some glyph is found that is not in the font, do the
  3050. * fallback dance.
  3051. */
  3052. u8fs = s;
  3053. u8fblen = 0;
  3054. u8fl = 0;
  3055. oneatatime = font->width != xw.cw;
  3056. for(;;) {
  3057. u8c = s;
  3058. u8cblen = utf8decode(s, &unicodep, UTF_SIZ);
  3059. s += u8cblen;
  3060. bytelen -= u8cblen;
  3061. doesexist = XftCharExists(xw.dpy, font->match, unicodep);
  3062. if(doesexist) {
  3063. u8fl++;
  3064. u8fblen += u8cblen;
  3065. if(!oneatatime && bytelen > 0)
  3066. continue;
  3067. }
  3068. if(u8fl > 0) {
  3069. XftDrawStringUtf8(xw.draw, fg,
  3070. font->match, xp,
  3071. winy + font->ascent,
  3072. (FcChar8 *)u8fs,
  3073. u8fblen);
  3074. xp += xw.cw * u8fl;
  3075. }
  3076. break;
  3077. }
  3078. if(doesexist) {
  3079. if(oneatatime)
  3080. continue;
  3081. break;
  3082. }
  3083. /* Search the font cache. */
  3084. for(i = 0; i < frclen; i++) {
  3085. charexists = XftCharExists(xw.dpy, frc[i].font, unicodep);
  3086. /* Everything correct. */
  3087. if(charexists && frc[i].flags == frcflags)
  3088. break;
  3089. /* We got a default font for a not found glyph. */
  3090. if(!charexists && frc[i].flags == frcflags \
  3091. && frc[i].unicodep == unicodep) {
  3092. break;
  3093. }
  3094. }
  3095. /* Nothing was found. */
  3096. if(i >= frclen) {
  3097. if(!font->set)
  3098. font->set = FcFontSort(0, font->pattern,
  3099. FcTrue, 0, &fcres);
  3100. fcsets[0] = font->set;
  3101. /*
  3102. * Nothing was found in the cache. Now use
  3103. * some dozen of Fontconfig calls to get the
  3104. * font for one single character.
  3105. *
  3106. * Xft and fontconfig are design failures.
  3107. */
  3108. fcpattern = FcPatternDuplicate(font->pattern);
  3109. fccharset = FcCharSetCreate();
  3110. FcCharSetAddChar(fccharset, unicodep);
  3111. FcPatternAddCharSet(fcpattern, FC_CHARSET,
  3112. fccharset);
  3113. FcPatternAddBool(fcpattern, FC_SCALABLE,
  3114. FcTrue);
  3115. FcConfigSubstitute(0, fcpattern,
  3116. FcMatchPattern);
  3117. FcDefaultSubstitute(fcpattern);
  3118. fontpattern = FcFontSetMatch(0, fcsets, 1,
  3119. fcpattern, &fcres);
  3120. /*
  3121. * Overwrite or create the new cache entry.
  3122. */
  3123. if(frclen >= LEN(frc)) {
  3124. frclen = LEN(frc) - 1;
  3125. XftFontClose(xw.dpy, frc[frclen].font);
  3126. frc[frclen].unicodep = 0;
  3127. }
  3128. frc[frclen].font = XftFontOpenPattern(xw.dpy,
  3129. fontpattern);
  3130. frc[frclen].flags = frcflags;
  3131. frc[frclen].unicodep = unicodep;
  3132. i = frclen;
  3133. frclen++;
  3134. FcPatternDestroy(fcpattern);
  3135. FcCharSetDestroy(fccharset);
  3136. }
  3137. XftDrawStringUtf8(xw.draw, fg, frc[i].font,
  3138. xp, winy + frc[i].font->ascent,
  3139. (FcChar8 *)u8c, u8cblen);
  3140. xp += xw.cw * wcwidth(unicodep);
  3141. }
  3142. /*
  3143. * This is how the loop above actually should be. Why does the
  3144. * application have to care about font details?
  3145. *
  3146. * I have to repeat: Xft and Fontconfig are design failures.
  3147. */
  3148. /*
  3149. XftDrawStringUtf8(xw.draw, fg, font->set, winx,
  3150. winy + font->ascent, (FcChar8 *)s, bytelen);
  3151. */
  3152. if(base.mode & ATTR_UNDERLINE) {
  3153. XftDrawRect(xw.draw, fg, winx, winy + font->ascent + 1,
  3154. width, 1);
  3155. }
  3156. if(base.mode & ATTR_STRUCK) {
  3157. XftDrawRect(xw.draw, fg, winx, winy + 2 * font->ascent / 3,
  3158. width, 1);
  3159. }
  3160. /* Reset clip to none. */
  3161. XftDrawSetClip(xw.draw, 0);
  3162. }
  3163. void
  3164. xdrawcursor(void) {
  3165. static int oldx = 0, oldy = 0;
  3166. int sl, width, curx;
  3167. Glyph g = {{' '}, ATTR_NULL, defaultbg, defaultcs};
  3168. LIMIT(oldx, 0, term.col-1);
  3169. LIMIT(oldy, 0, term.row-1);
  3170. curx = term.c.x;
  3171. /* adjust position if in dummy */
  3172. if(term.line[oldy][oldx].mode & ATTR_WDUMMY)
  3173. oldx--;
  3174. if(term.line[term.c.y][curx].mode & ATTR_WDUMMY)
  3175. curx--;
  3176. memcpy(g.c, term.line[term.c.y][term.c.x].c, UTF_SIZ);
  3177. /* remove the old cursor */
  3178. sl = utf8len(term.line[oldy][oldx].c);
  3179. width = (term.line[oldy][oldx].mode & ATTR_WIDE)? 2 : 1;
  3180. xdraws(term.line[oldy][oldx].c, term.line[oldy][oldx], oldx,
  3181. oldy, width, sl);
  3182. if(IS_SET(MODE_HIDE))
  3183. return;
  3184. /* draw the new one */
  3185. if(xw.state & WIN_FOCUSED) {
  3186. switch (xw.cursor) {
  3187. case 0: /* Blinking Block */
  3188. case 1: /* Blinking Block (Default) */
  3189. case 2: /* Steady Block */
  3190. if(IS_SET(MODE_REVERSE)) {
  3191. g.mode |= ATTR_REVERSE;
  3192. g.fg = defaultcs;
  3193. g.bg = defaultfg;
  3194. }
  3195. sl = utf8len(g.c);
  3196. width = (term.line[term.c.y][curx].mode & ATTR_WIDE)\
  3197. ? 2 : 1;
  3198. xdraws(g.c, g, term.c.x, term.c.y, width, sl);
  3199. break;
  3200. case 3: /* Blinking Underline */
  3201. case 4: /* Steady Underline */
  3202. XftDrawRect(xw.draw, &dc.col[defaultcs],
  3203. borderpx + curx * xw.cw,
  3204. borderpx + (term.c.y + 1) * xw.ch - cursorthickness,
  3205. xw.cw, cursorthickness);
  3206. break;
  3207. case 5: /* Blinking bar */
  3208. case 6: /* Steady bar */
  3209. XftDrawRect(xw.draw, &dc.col[defaultcs],
  3210. borderpx + curx * xw.cw,
  3211. borderpx + term.c.y * xw.ch,
  3212. cursorthickness, xw.ch);
  3213. break;
  3214. }
  3215. } else {
  3216. XftDrawRect(xw.draw, &dc.col[defaultcs],
  3217. borderpx + curx * xw.cw,
  3218. borderpx + term.c.y * xw.ch,
  3219. xw.cw - 1, 1);
  3220. XftDrawRect(xw.draw, &dc.col[defaultcs],
  3221. borderpx + curx * xw.cw,
  3222. borderpx + term.c.y * xw.ch,
  3223. 1, xw.ch - 1);
  3224. XftDrawRect(xw.draw, &dc.col[defaultcs],
  3225. borderpx + (curx + 1) * xw.cw - 1,
  3226. borderpx + term.c.y * xw.ch,
  3227. 1, xw.ch - 1);
  3228. XftDrawRect(xw.draw, &dc.col[defaultcs],
  3229. borderpx + curx * xw.cw,
  3230. borderpx + (term.c.y + 1) * xw.ch - 1,
  3231. xw.cw, 1);
  3232. }
  3233. oldx = curx, oldy = term.c.y;
  3234. }
  3235. void
  3236. xsettitle(char *p) {
  3237. XTextProperty prop;
  3238. Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
  3239. &prop);
  3240. XSetWMName(xw.dpy, xw.win, &prop);
  3241. XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
  3242. XFree(prop.value);
  3243. }
  3244. void
  3245. xresettitle(void) {
  3246. xsettitle(opt_title ? opt_title : "st");
  3247. }
  3248. void
  3249. redraw(void) {
  3250. tfulldirt();
  3251. draw();
  3252. }
  3253. void
  3254. draw(void) {
  3255. drawregion(0, 0, term.col, term.row);
  3256. XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, xw.w,
  3257. xw.h, 0, 0);
  3258. XSetForeground(xw.dpy, dc.gc,
  3259. dc.col[IS_SET(MODE_REVERSE)?
  3260. defaultfg : defaultbg].pixel);
  3261. }
  3262. void
  3263. drawregion(int x1, int y1, int x2, int y2) {
  3264. int ic, ib, x, y, ox, sl;
  3265. Glyph base, new;
  3266. char buf[DRAW_BUF_SIZ];
  3267. bool ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
  3268. long unicodep;
  3269. if(!(xw.state & WIN_VISIBLE))
  3270. return;
  3271. for(y = y1; y < y2; y++) {
  3272. if(!term.dirty[y])
  3273. continue;
  3274. xtermclear(0, y, term.col, y);
  3275. term.dirty[y] = 0;
  3276. base = term.line[y][0];
  3277. ic = ib = ox = 0;
  3278. for(x = x1; x < x2; x++) {
  3279. new = term.line[y][x];
  3280. if(new.mode == ATTR_WDUMMY)
  3281. continue;
  3282. if(ena_sel && selected(x, y))
  3283. new.mode ^= ATTR_REVERSE;
  3284. if(ib > 0 && (ATTRCMP(base, new)
  3285. || ib >= DRAW_BUF_SIZ-UTF_SIZ)) {
  3286. xdraws(buf, base, ox, y, ic, ib);
  3287. ic = ib = 0;
  3288. }
  3289. if(ib == 0) {
  3290. ox = x;
  3291. base = new;
  3292. }
  3293. sl = utf8decode(new.c, &unicodep, UTF_SIZ);
  3294. memcpy(buf+ib, new.c, sl);
  3295. ib += sl;
  3296. ic += (new.mode & ATTR_WIDE)? 2 : 1;
  3297. }
  3298. if(ib > 0)
  3299. xdraws(buf, base, ox, y, ic, ib);
  3300. }
  3301. xdrawcursor();
  3302. }
  3303. void
  3304. expose(XEvent *ev) {
  3305. XExposeEvent *e = &ev->xexpose;
  3306. if(xw.state & WIN_REDRAW) {
  3307. if(!e->count)
  3308. xw.state &= ~WIN_REDRAW;
  3309. }
  3310. redraw();
  3311. }
  3312. void
  3313. visibility(XEvent *ev) {
  3314. XVisibilityEvent *e = &ev->xvisibility;
  3315. if(e->state == VisibilityFullyObscured) {
  3316. xw.state &= ~WIN_VISIBLE;
  3317. } else if(!(xw.state & WIN_VISIBLE)) {
  3318. /* need a full redraw for next Expose, not just a buf copy */
  3319. xw.state |= WIN_VISIBLE | WIN_REDRAW;
  3320. }
  3321. }
  3322. void
  3323. unmap(XEvent *ev) {
  3324. xw.state &= ~WIN_VISIBLE;
  3325. }
  3326. void
  3327. xsetpointermotion(int set) {
  3328. MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
  3329. XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
  3330. }
  3331. void
  3332. xseturgency(int add) {
  3333. XWMHints *h = XGetWMHints(xw.dpy, xw.win);
  3334. MODBIT(h->flags, add, XUrgencyHint);
  3335. XSetWMHints(xw.dpy, xw.win, h);
  3336. XFree(h);
  3337. }
  3338. void
  3339. focus(XEvent *ev) {
  3340. XFocusChangeEvent *e = &ev->xfocus;
  3341. if(e->mode == NotifyGrab)
  3342. return;
  3343. if(ev->type == FocusIn) {
  3344. XSetICFocus(xw.xic);
  3345. xw.state |= WIN_FOCUSED;
  3346. xseturgency(0);
  3347. if(IS_SET(MODE_FOCUS))
  3348. ttywrite("\033[I", 3);
  3349. } else {
  3350. XUnsetICFocus(xw.xic);
  3351. xw.state &= ~WIN_FOCUSED;
  3352. if(IS_SET(MODE_FOCUS))
  3353. ttywrite("\033[O", 3);
  3354. }
  3355. }
  3356. bool
  3357. match(uint mask, uint state) {
  3358. return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
  3359. }
  3360. void
  3361. numlock(const Arg *dummy) {
  3362. term.numlock ^= 1;
  3363. }
  3364. char*
  3365. kmap(KeySym k, uint state) {
  3366. Key *kp;
  3367. int i;
  3368. /* Check for mapped keys out of X11 function keys. */
  3369. for(i = 0; i < LEN(mappedkeys); i++) {
  3370. if(mappedkeys[i] == k)
  3371. break;
  3372. }
  3373. if(i == LEN(mappedkeys)) {
  3374. if((k & 0xFFFF) < 0xFD00)
  3375. return NULL;
  3376. }
  3377. for(kp = key; kp < key + LEN(key); kp++) {
  3378. if(kp->k != k)
  3379. continue;
  3380. if(!match(kp->mask, state))
  3381. continue;
  3382. if(IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
  3383. continue;
  3384. if(term.numlock && kp->appkey == 2)
  3385. continue;
  3386. if(IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
  3387. continue;
  3388. if(IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
  3389. continue;
  3390. return kp->s;
  3391. }
  3392. return NULL;
  3393. }
  3394. void
  3395. kpress(XEvent *ev) {
  3396. XKeyEvent *e = &ev->xkey;
  3397. KeySym ksym;
  3398. char buf[32], *customkey;
  3399. int len;
  3400. long c;
  3401. Status status;
  3402. Shortcut *bp;
  3403. if(IS_SET(MODE_KBDLOCK))
  3404. return;
  3405. len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
  3406. /* 1. shortcuts */
  3407. for(bp = shortcuts; bp < shortcuts + LEN(shortcuts); bp++) {
  3408. if(ksym == bp->keysym && match(bp->mod, e->state)) {
  3409. bp->func(&(bp->arg));
  3410. return;
  3411. }
  3412. }
  3413. /* 2. custom keys from config.h */
  3414. if((customkey = kmap(ksym, e->state))) {
  3415. ttysend(customkey, strlen(customkey));
  3416. return;
  3417. }
  3418. /* 3. composed string from input method */
  3419. if(len == 0)
  3420. return;
  3421. if(len == 1 && e->state & Mod1Mask) {
  3422. if(IS_SET(MODE_8BIT)) {
  3423. if(*buf < 0177) {
  3424. c = *buf | 0x80;
  3425. len = utf8encode(c, buf, UTF_SIZ);
  3426. }
  3427. } else {
  3428. buf[1] = buf[0];
  3429. buf[0] = '\033';
  3430. len = 2;
  3431. }
  3432. }
  3433. ttysend(buf, len);
  3434. }
  3435. void
  3436. cmessage(XEvent *e) {
  3437. /*
  3438. * See xembed specs
  3439. * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
  3440. */
  3441. if(e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
  3442. if(e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
  3443. xw.state |= WIN_FOCUSED;
  3444. xseturgency(0);
  3445. } else if(e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
  3446. xw.state &= ~WIN_FOCUSED;
  3447. }
  3448. } else if(e->xclient.data.l[0] == xw.wmdeletewin) {
  3449. /* Send SIGHUP to shell */
  3450. kill(pid, SIGHUP);
  3451. exit(EXIT_SUCCESS);
  3452. }
  3453. }
  3454. void
  3455. cresize(int width, int height) {
  3456. int col, row;
  3457. if(width != 0)
  3458. xw.w = width;
  3459. if(height != 0)
  3460. xw.h = height;
  3461. col = (xw.w - 2 * borderpx) / xw.cw;
  3462. row = (xw.h - 2 * borderpx) / xw.ch;
  3463. tresize(col, row);
  3464. xresize(col, row);
  3465. ttyresize();
  3466. }
  3467. void
  3468. resize(XEvent *e) {
  3469. if(e->xconfigure.width == xw.w && e->xconfigure.height == xw.h)
  3470. return;
  3471. cresize(e->xconfigure.width, e->xconfigure.height);
  3472. }
  3473. void
  3474. run(void) {
  3475. XEvent ev;
  3476. int w = xw.w, h = xw.h;
  3477. fd_set rfd;
  3478. int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
  3479. struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
  3480. long deltatime;
  3481. /* Waiting for window mapping */
  3482. while(1) {
  3483. XNextEvent(xw.dpy, &ev);
  3484. if(XFilterEvent(&ev, None))
  3485. continue;
  3486. if(ev.type == ConfigureNotify) {
  3487. w = ev.xconfigure.width;
  3488. h = ev.xconfigure.height;
  3489. } else if(ev.type == MapNotify) {
  3490. break;
  3491. }
  3492. }
  3493. ttynew();
  3494. cresize(w, h);
  3495. clock_gettime(CLOCK_MONOTONIC, &last);
  3496. lastblink = last;
  3497. for(xev = actionfps;;) {
  3498. FD_ZERO(&rfd);
  3499. FD_SET(cmdfd, &rfd);
  3500. FD_SET(xfd, &rfd);
  3501. if(pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
  3502. if(errno == EINTR)
  3503. continue;
  3504. die("select failed: %s\n", strerror(errno));
  3505. }
  3506. if(FD_ISSET(cmdfd, &rfd)) {
  3507. ttyread();
  3508. if(blinktimeout) {
  3509. blinkset = tattrset(ATTR_BLINK);
  3510. if(!blinkset)
  3511. MODBIT(term.mode, 0, MODE_BLINK);
  3512. }
  3513. }
  3514. if(FD_ISSET(xfd, &rfd))
  3515. xev = actionfps;
  3516. clock_gettime(CLOCK_MONOTONIC, &now);
  3517. drawtimeout.tv_sec = 0;
  3518. drawtimeout.tv_nsec = (1000/xfps) * 1E6;
  3519. tv = &drawtimeout;
  3520. dodraw = 0;
  3521. if(blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
  3522. tsetdirtattr(ATTR_BLINK);
  3523. term.mode ^= MODE_BLINK;
  3524. lastblink = now;
  3525. dodraw = 1;
  3526. }
  3527. deltatime = TIMEDIFF(now, last);
  3528. if(deltatime > (xev? (1000/xfps) : (1000/actionfps))
  3529. || deltatime < 0) {
  3530. dodraw = 1;
  3531. last = now;
  3532. }
  3533. if(dodraw) {
  3534. while(XPending(xw.dpy)) {
  3535. XNextEvent(xw.dpy, &ev);
  3536. if(XFilterEvent(&ev, None))
  3537. continue;
  3538. if(handler[ev.type])
  3539. (handler[ev.type])(&ev);
  3540. }
  3541. draw();
  3542. XFlush(xw.dpy);
  3543. if(xev && !FD_ISSET(xfd, &rfd))
  3544. xev--;
  3545. if(!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
  3546. if(blinkset) {
  3547. if(TIMEDIFF(now, lastblink) \
  3548. > blinktimeout) {
  3549. drawtimeout.tv_nsec = 1000;
  3550. } else {
  3551. drawtimeout.tv_nsec = (1E6 * \
  3552. (blinktimeout - \
  3553. TIMEDIFF(now,
  3554. lastblink)));
  3555. }
  3556. drawtimeout.tv_sec = \
  3557. drawtimeout.tv_nsec / 1E9;
  3558. drawtimeout.tv_nsec %= (long)1E9;
  3559. } else {
  3560. tv = NULL;
  3561. }
  3562. }
  3563. }
  3564. }
  3565. }
  3566. void
  3567. usage(void) {
  3568. die("%s " VERSION " (c) 2010-2015 st engineers\n" \
  3569. "usage: st [-a] [-v] [-c class] [-f font] [-g geometry] [-o file]\n"
  3570. " [-i] [-t title] [-w windowid] [-e command ...]\n", argv0);
  3571. }
  3572. int
  3573. main(int argc, char *argv[]) {
  3574. char *titles;
  3575. uint cols = 80, rows = 24;
  3576. xw.l = xw.t = 0;
  3577. xw.isfixed = False;
  3578. xw.cursor = 0;
  3579. ARGBEGIN {
  3580. case 'a':
  3581. allowaltscreen = false;
  3582. break;
  3583. case 'c':
  3584. opt_class = EARGF(usage());
  3585. break;
  3586. case 'e':
  3587. /* eat all remaining arguments */
  3588. if(argc > 1) {
  3589. opt_cmd = &argv[1];
  3590. if(argv[1] != NULL && opt_title == NULL) {
  3591. titles = xstrdup(argv[1]);
  3592. opt_title = basename(titles);
  3593. }
  3594. }
  3595. goto run;
  3596. case 'f':
  3597. opt_font = EARGF(usage());
  3598. break;
  3599. case 'g':
  3600. xw.gm = XParseGeometry(EARGF(usage()),
  3601. &xw.l, &xw.t, &cols, &rows);
  3602. break;
  3603. case 'i':
  3604. xw.isfixed = True;
  3605. break;
  3606. case 'o':
  3607. opt_io = EARGF(usage());
  3608. break;
  3609. case 't':
  3610. opt_title = EARGF(usage());
  3611. break;
  3612. case 'w':
  3613. opt_embed = EARGF(usage());
  3614. break;
  3615. case 'v':
  3616. default:
  3617. usage();
  3618. } ARGEND;
  3619. run:
  3620. setlocale(LC_CTYPE, "");
  3621. XSetLocaleModifiers("");
  3622. tnew(MAX(cols, 1), MAX(rows, 1));
  3623. xinit();
  3624. selinit();
  3625. run();
  3626. return 0;
  3627. }