src/sterm.c

   1 /* See LICENSE for licence details. */
   2 #ifndef GIT_VERSION
   3 # define VERSION  "0.4.0.beta4"
   4 #else
   5 # define VERSION  GIT_VERSION
   6 #endif
   7
   8 #ifdef _XOPEN_SOURCE
   9 # undef _XOPEN_SOURCE
  10 #endif
  11 #define _XOPEN_SOURCE 600
  12
  13 #ifndef _GNU_SOURCE
  14 # define _GNU_SOURCE
  15 #endif
  16
  17
  18 #include <alloca.h>
  19 #include <ctype.h>
  20 #include <errno.h>
  21 #include <fcntl.h>
  22 #include <iconv.h>
  23 #include <limits.h>
  24 #include <locale.h>
  25
  26 #ifdef __MACH__
  27 #include <util.h>
  28 #else
  29 #include <pty.h>
  30 #endif
  31
  32 #include <stdarg.h>
  33 #include <stdint.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <strings.h>
  38 #include <signal.h>
  39 #include <sys/ioctl.h>
  40 #include <sys/select.h>
  41 #include <sys/stat.h>
  42 #include <sys/time.h>
  43 #include <sys/types.h>
  44 #include <sys/wait.h>
  45 #include <time.h>
  46 #include <unistd.h>
  47 #include <X11/Xatom.h>
  48 #include <X11/Xlib.h>
  49 #include <X11/Xutil.h>
  50 #include <X11/cursorfont.h>
  51 #include <X11/keysym.h>
  52
  53 ////////////////////////////////////////////////////////////////////////////////
  54 #include "libk8sterm/k8sterm.h"
  55
  56
  57 ////////////////////////////////////////////////////////////////////////////////
  58 #include "defaults.c"
  59
  60
  61 ////////////////////////////////////////////////////////////////////////////////
  62 #define USAGE_VERSION  "k8sterm " VERSION "\n(c) 2010-2012 st engineers and Ketmar // Vampire Avalon\n"
  63 #define USAGE \
  64   "usage: sterm [options]\n" \
  65   "options:\n" \
  66   "-v              show version and exit\n" \
  67   "-h              show this help and exit\n" \
  68   "-S              disable tabs\n" \
  69   "-t title        set window title\n" \
  70   "-c class        set window class\n" \
  71   "-w windowid     embed in window id given id\n" \
  72   "-T termname     set TERM name\n" \
  73   "-C config_file  use custom config file\n" \
  74   "-l langiconv    use given locale\n" \
  75   "-R stcmd        run this INTERNAL k8sterm command\n" \
  76   "-e command...   run given command and pass all following args to it\n"
  77
  78
  79 ////////////////////////////////////////////////////////////////////////////////
  80 /* masks for key translation */
  81 #define XK_NO_MOD   (UINT_MAX)
  82 #define XK_ANY_MOD  (0)
  83
  84
  85 ////////////////////////////////////////////////////////////////////////////////
  86 // internal command line mode
  87 enum {
  88   K8T_CMDMODE_NONE,
  89   K8T_CMDMODE_INPUT,
  90   K8T_CMDMODE_MESSAGE
  91 };
  92
  93
  94 // X11 window state flags
  95 enum {
  96   K8T_WIN_VISIBLE = 0x01,
  97   K8T_WIN_REDRAW  = 0x02,
  98   K8T_WIN_FOCUSED = 0x04
  99 };
 100
 101
 102 ////////////////////////////////////////////////////////////////////////////////
 103 /* Purely graphic info */
 104 typedef struct {
 105   Display *dpy;
 106   Colormap cmap;
 107   Window win;
 108   Cursor cursor; // text cursor
 109   Cursor defcursor; // 'default' cursor
 110   Cursor lastcursor; // last used cursor before blanking
 111   Cursor blankPtr;
 112   Atom xembed;
 113   XIM xim;
 114   XIC xic;
 115   int scr;
 116   int w;      /* window width */
 117   int h;      /* window height */
 118   int bufw;   /* pixmap width */
 119   int bufh;   /* pixmap height */
 120   int ch;     /* char height */
 121   int cw;     /* char width */
 122   char state; /* focus, redraw, visible */
 123   //
 124   int tch;    /* tab text char height */
 125   Pixmap pictab;
 126   int picscrhere;
 127   Pixmap picscr;
 128   int tabheight;
 129   //struct timeval lastdraw;
 130 } K8TXWindow;
 131
 132
 133 /* Drawing Context */
 134 typedef struct {
 135   uint32_t *ncol; // normal colors
 136   uint32_t *bcol; // b/w colors
 137   uint32_t *gcol; // green colors
 138   uint32_t *clrs[3];
 139   GC gc;
 140   struct {
 141     int ascent;
 142     int descent;
 143     short lbearing;
 144     short rbearing;
 145     XFontSet set;
 146     Font fid;
 147   } font[3];
 148 } K8TXDC;
 149
 150
 151 typedef struct K8TCmdLine K8TCmdLine;
 152
 153 typedef void (*CmdLineExecFn) (K8Term *term, K8TCmdLine *cmdline, int cancelled);
 154
 155 struct K8TCmdLine {
 156   int cmdMode; // K8T_CMDMODE_xxx
 157   char cmdline[K8T_UTF_SIZ*CMDLINE_SIZE];
 158   int cmdreslen; // byte length of 'reserved' (read-only) part
 159   int cmdofs; // byte offset of the first visible UTF-8 char in cmdline
 160   char cmdc[K8T_UTF_SIZ+1]; // buffer to collect UTF-8 char
 161   int cmdcl; // index in cmdc, used to collect UTF-8 chars
 162   int cmdtabpos; // # of bytes (not UTF-8 chars!) used in autocompletion or -1
 163   const char *cmdcurtabc; // current autocompleted command
 164   CmdLineExecFn cmdexecfn;
 165   void *udata;
 166 };
 167
 168
 169 /* internal terminal data */
 170 typedef struct {
 171   pid_t pid;
 172   int exitcode;
 173   //
 174   int waitkeypress; /* child is dead, awaiting for keypress */
 175   char *exitmsg; /* message for waitkeypress */
 176   //
 177   char *execcmd;
 178   //
 179   char *lastpname;
 180   char *lastppath;
 181   int titleset;
 182   int mc_hack_active;
 183   int old_scroll_mode;
 184   //
 185   K8TCmdLine cmdline;
 186 } K8TermData;
 187
 188 #define K8T_DATA(_term)  ((K8TermData *)(_term->udata))
 189
 190
 191 ////////////////////////////////////////////////////////////////////////////////
 192 #include "globals.c"
 193 #include "getticks.c"
 194
 195
 196 ////////////////////////////////////////////////////////////////////////////////
 197 #include "utils.c"
 198 #include "keymaps.c"
 199
 200
 201 ////////////////////////////////////////////////////////////////////////////////
 202 static void executeCommands (const char *str);
 203 static const char *findCommandCompletion (const char *str, int slen, const char *prev);
 204
 205 static void tdrawfatalmsg (K8Term *term, const char *msg);
 206
 207 static void tcmdput (K8Term *term, K8TCmdLine *cmdline, const char *s, int len);
 208
 209 static void xclearunused (void);
 210 static void xseturgency (int add);
 211 static void xfixsel (void);
 212 static void xblankPointer (void);
 213 static void xunblankPointer (void);
 214 static void xdrawTabBar (void);
 215 static void xdrawcmdline (K8Term *term, K8TCmdLine *cmdline, int scry);
 216
 217 static void termCreateXPixmap (K8Term *term);
 218 static void termSetCallbacks (K8Term *term);
 219 static void termSetDefaults (K8Term *term);
 220
 221 static void getButtonInfo (K8Term *term, XEvent *e, int *b, int *x, int *y);
 222
 223 static void fixWindowTitle (const K8Term *t);
 224
 225 static void scrollHistory (K8Term *term, int delta);
 226
 227 static int termsDoIO (int xfd);
 228 //static void doTermWrFlush (K8Term *term);
 229
 230
 231 ////////////////////////////////////////////////////////////////////////////////
 232 static inline uint32_t getColor (int idx) {
 233   if (globalBW && (curterm == NULL || !curterm->blackandwhite)) return dc.clrs[globalBW][idx];
 234   if (curterm != NULL) return dc.clrs[curterm->blackandwhite%3][idx];
 235   return dc.clrs[0][idx];
 236 }
 237
 238
 239 ////////////////////////////////////////////////////////////////////////////////
 240 #include "iniparse.c"
 241 #include "locales.c"
 242
 243
 244 ////////////////////////////////////////////////////////////////////////////////
 245 #include "termswitch.c"
 246 #include "ttyinit.c"
 247
 248
 249 ////////////////////////////////////////////////////////////////////////////////
 250 #include "tcmdline.c"
 251 #include "tfatalbox.c"
 252
 253
 254 ////////////////////////////////////////////////////////////////////////////////
 255 #include "x11init.c"
 256 #include "x11misc.c"
 257 #include "x11drawtabs.c"
 258 #include "x11drawcmdline.c"
 259
 260
 261 ////////////////////////////////////////////////////////////////////////////////
 262 #include "x11evtvis.c"
 263 #include "x11evtkbd.c"
 264 #include "x11evtsel.c"
 265 #include "x11evtmouse.c"
 266
 267
 268 ////////////////////////////////////////////////////////////////////////////////
 269 #include "x11CB.c"
 270
 271
 272 ////////////////////////////////////////////////////////////////////////////////
 273 // xembed?
 274 static void xevtcbcmessage (XEvent *e) {
 275   /* See xembed specs http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html */
 276   if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
 277     if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
 278       xw.state |= K8T_WIN_FOCUSED;
 279       xseturgency(0);
 280       k8t_tmSendFocusEvent(curterm, 1);
 281     } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
 282       xw.state &= ~K8T_WIN_FOCUSED;
 283       k8t_tmSendFocusEvent(curterm, 0);
 284     }
 285     k8t_drawCursor(curterm, 0);
 286     xdrawTabBar();
 287     k8t_drawCopy(curterm, 0, 0, curterm->col, curterm->row);
 288     return;
 289   }
 290   //
 291   if (e->xclient.data.l[0] == XA_WM_DELETE_WINDOW) {
 292     closeRequestComes = 1;
 293     return;
 294   }
 295 }
 296
 297
 298 ////////////////////////////////////////////////////////////////////////////////
 299 static K8TTimeMSec nscb_lastForcedRedraw = 0; //FIXME: nasty global!
 300
 301
 302 /*
 303 curterm->wantRedraw = 1;
 304 curterm->lastDrawTime = 0;
 305 */
 306 static int afterNLSWCB (K8Term *term, int is_swap) {
 307   static int lines_20 = 0; //FIXME: nasty global!
 308   int res = 0;
 309   /*FIXME: HACKERYHACK!*/
 310   if (curterm == term && opt_fastupdate) {
 311     K8TTimeMSec tt;
 312     /* force redraw */
 313     int xtime;
 314     if (!is_swap && lines_20 > 0) {
 315       --lines_20;
 316       xtime = 20;
 317     } else {
 318       //if (is_swap) fprintf(stderr, "SWPALT: %d\n", K8T_ISSET(term, K8T_MODE_ALTSCREEN));
 319       /* either not swapping or just swapped to alternate screen: longer delay */
 320       if (is_swap) {
 321         /* swap */
 322         if (K8T_ISSET(term, K8T_MODE_ALTSCREEN)) {
 323           /* swapped to alternate screen */
 324           xtime = 100;
 325           lines_20 = 0;
 326         } else {
 327           /* swapped to normal screen */
 328           xtime = 10;
 329           lines_20 = 10;
 330         }
 331       } else {
 332         /* newline */
 333         xtime = (K8T_ISSET(term, K8T_MODE_ALTSCREEN) ? 150 : 80);
 334         lines_20 = 0;
 335       }
 336     }
 337     tt = mclock_ticks();
 338     if (tt >= xtime && tt-xtime >= nscb_lastForcedRedraw) {
 339       k8t_tmWantRedraw(term, 1); /* force it */
 340       k8t_drawTerm(term, 0);
 341       /*
 342       {
 343         K8TTimeMSec t1 = mclock_ticks();
 344         if (t1-tt > 20) fprintf(stderr, "DRAWING TOO SLOW! %u\n", t1-tt);
 345       }
 346       */
 347       nscb_lastForcedRedraw = tt;
 348       curterm->lastDrawTime = tt;
 349       res = 1;
 350     } else {
 351       k8t_tmWantRedraw(term, 0); /* shedule */
 352       curterm->lastDrawTime = tt;
 353     }
 354     curterm->justSwapped = 0;
 355   } else {
 356     lines_20 = 0;
 357   }
 358   return res;
 359 }
 360
 361
 362 static void afterNewLineCB (K8Term *term) {
 363   afterNLSWCB(term, 0);
 364 }
 365
 366
 367 static void afterScreenSwapCB (K8Term *term) {
 368   //fprintf(stderr, "afterScreenSwapCB:%d; curterm==term:%d; opt_fastupdate:%d\n", K8T_ISSET(term, K8T_MODE_ALTSCREEN), curterm==term, opt_fastupdate);
 369   afterNLSWCB(term, 1);
 370 }
 371
 372
 373 static inline int last_draw_too_old (void) {
 374   K8TTimeMSec tt;
 375   if (curterm != NULL) {
 376     if (curterm->dead || !curterm->wantRedraw) return 0;
 377 #if 0
 378     if (curterm->justSwapped) {
 379       afterNLSWCB(curterm, 1);
 380       curterm->justSwapped = 0; /* repainter will fix it, but... */
 381       return 0;
 382     }
 383 #endif
 384     tt = mclock_ticks();
 385     return
 386       (tt-curterm->lastDrawTime >= opt_drawtimeout ||
 387        tt-lastDrawTime >= (curterm->justSwapped ? opt_swapdrawtimeout : opt_maxdrawtimeout));
 388   } else {
 389     tt = mclock_ticks();
 390     return (tt-lastDrawTime >= opt_maxdrawtimeout);
 391   }
 392 }
 393
 394
 395 ////////////////////////////////////////////////////////////////////////////////
 396 // main loop
 397 #include "childkiller.c"
 398 static int childsigfd = -1;
 399
 400
 401 static void (*handler[LASTEvent])(XEvent *) = {
 402   [KeyPress] = xevtcbkpress,
 403   [ClientMessage] = xevtcbcmessage,
 404   [ConfigureNotify] = xevtcbresise,
 405   [VisibilityNotify] = xevtcbvisibility,
 406   [UnmapNotify] = xevtcbunmap,
 407   [Expose] = xevtcbexpose,
 408   [FocusIn] = xevtcbfocus,
 409   [FocusOut] = xevtcbfocus,
 410   [MotionNotify] = xevtcbbmotion,
 411   [ButtonPress] = xevtcbbpress,
 412   [ButtonRelease] = xevtcbbrelease,
 413   [SelectionNotify] = xevtcbselnotify,
 414   [SelectionRequest] = xevtcbselrequest,
 415   [SelectionClear] = xevtcbselclear,
 416 };
 417
 418
 419 /*
 420 static void doTermWrFlush (K8Term *term) {
 421   for (;;) {
 422     fd_set rfd, wfd;
 423     //struct timeval timeout;
 424     //
 425     if (term->dead || term->cmdfd < 0) {
 426       // empty write buffer
 427       term->wrbufpos = term->wrbufused = 0;
 428       return;
 429     }
 430     //
 431     FD_ZERO(&rfd);
 432     FD_ZERO(&wfd);
 433     FD_SET(term->cmdfd, &rfd);
 434     FD_SET(term->cmdfd, &wfd);
 435     if (select(term->cmdfd+1, &rfd, &wfd, NULL, NULL) < 0) {
 436       if (errno == EINTR) continue;
 437       k8t_die("select failed: %s", strerror(errno));
 438     }
 439     //
 440     if (FD_ISSET(term->cmdfd, &rfd)) {
 441       int rd = k8t_ttyRead(term);
 442       //
 443       if (K8T_DATA(term)->waitkeypress && K8T_DATA(term)->exitmsg != NULL && rd < 0) {
 444         // there will be no more data
 445         close(term->cmdfd);
 446         term->cmdfd = -1;
 447         //
 448         tdrawfatalmsg(term, K8T_DATA(term)->exitmsg);
 449         free(K8T_DATA(term)->exitmsg);
 450         K8T_DATA(term)->exitmsg = NULL;
 451         k8t_tmWantRedraw(term, 1);
 452         // empty write buffer
 453         term->wrbufpos = term->wrbufused = 0;
 454         return;
 455       }
 456       //
 457       continue;
 458     } else {
 459       if (term->wrbufpos >= term->wrbufused) {
 460         // empty write buffer
 461         term->wrbufpos = term->wrbufused = 0;
 462         return;
 463       }
 464     }
 465     //
 466     if (K8T_DATA(term)->pid != 0 && FD_ISSET(term->cmdfd, &wfd)) {
 467       k8t_ttySendWriteBuf(term);
 468     }
 469   }
 470 }
 471 */
 472
 473
 474 static int termsDoIO (int xfd) {
 475   int res = 0, done;
 476   //
 477   do {
 478     fd_set rfd, wfd;
 479     struct timeval timeout;
 480     int sres, maxfd;
 481     //
 482     done = 0;
 483     FD_ZERO(&rfd);
 484     FD_ZERO(&wfd);
 485     if (xfd >= 0) { FD_SET(xfd, &rfd); maxfd = xfd; } else { maxfd = 0; }
 486     //FD_SET(curterm->cmdfd, &rfd);
 487     // have something to write?
 488     for (int f = 0; f < term_count; ++f) {
 489       K8Term *t = term_array[f];
 490       //
 491       if (!t->dead && t->cmdfd >= 0) {
 492         checkAndFixWindowTitle(t, 0);
 493         if (t->cmdfd > maxfd) maxfd = t->cmdfd;
 494         FD_SET(t->cmdfd, &rfd);
 495         if (K8T_DATA(t)->pid != 0 && t->wrbufpos < t->wrbufused) FD_SET(t->cmdfd, &wfd);
 496       }
 497     }
 498     //
 499     timeout.tv_sec = 0;
 500     timeout.tv_usec = (xfd >= 0 ? (opt_drawtimeout+2)*1000 : 0);
 501     if (childsigfd >= 0) {
 502       if (childsigfd > maxfd) maxfd = childsigfd;
 503       FD_SET(childsigfd, &rfd);
 504     }
 505     //fprintf(stderr, "before select...\n");
 506     sres = select(maxfd+1, &rfd, &wfd, NULL, &timeout);
 507     if (sres < 0) {
 508       if (errno == EINTR) continue;
 509       k8t_die("select failed: %s", strerror(errno));
 510     }
 511     if (childsigfd >= 0 && FD_ISSET(childsigfd, &rfd)) processDeadChildren(childsigfd);
 512     if (xfd >= 0 && FD_ISSET(xfd, &rfd)) {
 513       res = done = 1;
 514     } else {
 515       done = (sres == 0);
 516     }
 517     //fprintf(stderr, "after select...\n");
 518     // process terminals i/o
 519     for (int f = 0; f < term_count; ++f) {
 520       K8Term *t = term_array[f];
 521       //
 522       if (!t->dead && t->cmdfd >= 0) {
 523         int rd = -1;
 524         //
 525         if (K8T_DATA(t)->pid != 0 && FD_ISSET(t->cmdfd, &wfd)) k8t_ttyFlushWriteBuf(t);
 526         if (FD_ISSET(t->cmdfd, &rfd)) rd = k8t_ttyRead(t);
 527         //
 528         if (K8T_DATA(t)->waitkeypress && K8T_DATA(t)->exitmsg != NULL && rd < 0) {
 529           // there will be no more data
 530           close(t->cmdfd);
 531           t->cmdfd = -1;
 532           //
 533           tdrawfatalmsg(t, K8T_DATA(t)->exitmsg);
 534           free(K8T_DATA(t)->exitmsg);
 535           K8T_DATA(t)->exitmsg = NULL;
 536           k8t_tmWantRedraw(t, 1);
 537         }
 538       }
 539     }
 540   } while (!done);
 541   //
 542   return res;
 543 }
 544
 545
 546 static void run (void) {
 547   //int stuff_to_print = 0;
 548   int xfd = XConnectionNumber(xw.dpy);
 549   //
 550   ptrLastMove = mclock_ticks();
 551   while (term_count > 0) {
 552     XEvent ev;
 553     int doX, dodraw;
 554     //
 555     doX = termsDoIO(xfd);
 556     //
 557     termcleanup();
 558     if (term_count == 0) exit(exitcode);
 559     //
 560     dodraw = 0;
 561     if (curterm != NULL && curterm->curblink > 0) {
 562       K8TTimeMSec tt = mclock_ticks();
 563       //
 564       if (tt-curterm->lastBlinkTime >= curterm->curblink) {
 565         curterm->lastBlinkTime = tt;
 566         if ((xw.state&K8T_WIN_FOCUSED) || curterm->curblinkinactive) {
 567           curterm->curbhidden = (curterm->curbhidden ? 0 : -1);
 568           dodraw = 1;
 569         } else {
 570           curterm->curbhidden = 0;
 571         }
 572       }
 573     }
 574     if (updateTabBar) xdrawTabBar();
 575     if (dodraw || last_draw_too_old()) k8t_drawTerm(curterm, 0);
 576     //
 577     if (doX || XPending(xw.dpy)) {
 578       while (XPending(xw.dpy)) {
 579         XNextEvent(xw.dpy, &ev);
 580         switch (ev.type) {
 581           //case VisibilityNotify:
 582           //case UnmapNotify:
 583           //case FocusIn:
 584           //case FocusOut:
 585           case MotionNotify:
 586           case ButtonPress:
 587           case ButtonRelease:
 588             xunblankPointer();
 589             ptrLastMove = mclock_ticks();
 590             break;
 591           default: ;
 592         }
 593         if (XFilterEvent(&ev, xw.win)) continue;
 594         if (handler[ev.type]) (handler[ev.type])(&ev);
 595       }
 596     }
 597     //
 598     if (curterm != NULL) {
 599       switch (closeRequestComes) {
 600         case 1: // just comes
 601           if (opt_ignoreclose == 0) {
 602             tcmdlinehide(curterm, &K8T_DATA(curterm)->cmdline);
 603             tcmdlineinitex(curterm, &K8T_DATA(curterm)->cmdline, "Do you really want to close sterm [N/y]? ");
 604             K8T_DATA(curterm)->cmdline.cmdexecfn = cmdline_closequeryexec;
 605           } else if (opt_ignoreclose < 0) {
 606             //FIXME: kill all clients?
 607             return;
 608           }
 609           closeRequestComes = 0;
 610           break;
 611         case 2: // ok, die now
 612           //FIXME: kill all clients?
 613           return;
 614       }
 615     }
 616     //
 617     if (!ptrBlanked && opt_ptrblank > 0 && mclock_ticks()-ptrLastMove >= opt_ptrblank) {
 618       xblankPointer();
 619     }
 620   }
 621 }
 622
 623
 624 ////////////////////////////////////////////////////////////////////////////////
 625 static void termSetDefaults (K8Term *term) {
 626   term->deffg = defaultFG;
 627   term->defbg = defaultBG;
 628   term->defboldfg = defaultBoldFG;
 629   term->defunderfg = defaultUnderlineFG;
 630   //
 631   term->defcurfg = defaultCursorFG;
 632   term->defcurbg = defaultCursorBG;
 633   term->defcurinactivefg = defaultCursorInactiveFG;
 634   term->defcurinactivebg = defaultCursorInactiveBG;
 635   //
 636   term->tabsize = opt_tabsize;
 637   term->wrapOnCtrlChars = 0;
 638   term->historyLinesUsed = 0;
 639 }
 640
 641
 642 static void termSetCallbacks (K8Term *term) {
 643   K8TermData *td = calloc(1, sizeof(K8TermData));
 644   //
 645   if (td == NULL) k8t_die("out of memory!");
 646   term->udata = td;
 647   //
 648   term->clockTicks = clockTicksCB;
 649   term->setLastDrawTime = setLastDrawTimeCB;
 650   //
 651   term->isConversionNecessary = isConversionNecessaryCB;
 652   term->loc2utf = loc2utfCB;
 653   term->utf2loc = utf2locCB;
 654   //
 655   term->isFocused = isFocusedCB;
 656   term->isVisible = isVisibleCB;
 657   //
 658   term->drawSetFG = drawSetFGCB;
 659   term->drawSetBG = drawSetBGCB;
 660   term->drawRect = drawRectCB;
 661   term->drawFillRect = drawFillRectCB;
 662   term->drawCopyArea = drawCopyAreaCB;
 663   term->drawString = drawStringCB;
 664   term->drawOverlay = drawOverlayCB;
 665   //
 666   term->fixSelection = fixSelectionCB;
 667   term->clearSelection = clearSelectionCB;
 668   //
 669   term->titleChanged = titleChangedCB;
 670   term->doBell = doBellCB;
 671   //
 672   term->isUnderOverlay = isUnderOverlayCB;
 673   term->clipToOverlay = clipToOverlayCB;
 674   term->addHistoryLine = NULL;
 675   //term->doWriteBufferFlush = doTermWrFlush;
 676   //term->doWriteBufferFlush = NULL;
 677   term->afterNewLine = afterNewLineCB;
 678   term->afterScreenSwap = afterScreenSwapCB; // the same
 679   //
 680   term->unimap = unimap;
 681   td->execcmd = NULL;
 682   td->lastpname = strdup("");
 683   td->lastppath = strdup("");
 684   td->titleset = 0;
 685 }
 686
 687
 688 static void termCreateXPixmap (K8Term *term) {
 689   int w = K8T_MAX(1, term->col*xw.cw);
 690   int h = K8T_MAX(1, term->row*xw.ch);
 691   Pixmap newbuf;
 692   //
 693   newbuf = XCreatePixmap(xw.dpy, xw.win, w, h, XDefaultDepth(xw.dpy, xw.scr));
 694   //
 695   if (xw.picscrhere) {
 696     //XCopyArea(xw.dpy, td->picbuf, newbuf, dc.gc, 0, 0, td->picbufw, td->picbufh, 0, 0);
 697     XFreePixmap(xw.dpy, xw.picscr);
 698   }
 699   xw.picscr = newbuf;
 700   //
 701   term->drawSetFG(term, term->defbg);
 702   //
 703 /*
 704   if (td->picalloced) {
 705     if (td->picbufw > oldw) {
 706       XFillRectangle(xw.dpy, newbuf, dc.gc, oldw, 0, td->picbufw-oldw, K8T_MIN(td->picbufh, oldh));
 707     } else if (td->picbufw < oldw && xw.w > td->picbufw) {
 708       XClearArea(xw.dpy, xw.win, td->picbufw, 0, xw.w-td->picbufh, K8T_MIN(td->picbufh, oldh), False);
 709     }
 710     //
 711     if (td->picbufh > oldh) {
 712       XFillRectangle(xw.dpy, newbuf, dc.gc, 0, oldh, td->picbufw, td->picbufh-oldh);
 713     } else if (td->picbufh < oldh && xw.h > td->picbufh) {
 714       XClearArea(xw.dpy, xw.win, 0, td->picbufh, xw.w, xw.h-td->picbufh, False);
 715     }
 716   } else {
 717     XFillRectangle(xw.dpy, newbuf, dc.gc, 0, 0, td->picbufw, td->picbufh);
 718   }
 719 */
 720   XFillRectangle(xw.dpy, newbuf, dc.gc, 0, 0, w, h);
 721   //
 722   k8t_tmFullDirty(term);
 723 }
 724
 725
 726 ////////////////////////////////////////////////////////////////////////////////
 727 #include "inifile.c"
 728 #include "commands.c"
 729
 730
 731 ////////////////////////////////////////////////////////////////////////////////
 732 #define PUSH_BACK(_c)  (*ress)[dpos++] = (_c)
 733 #define DECODE_TUPLE(tuple,bytes) \
 734   for (tmp = bytes; tmp > 0; tmp--, tuple = (tuple & 0x00ffffff)<<8) \
 735     PUSH_BACK((char)((tuple >> 24)&0xff))
 736
 737 // returns ress length
 738 static int ascii85Decode (char **ress, const char *srcs/*, int start, int length*/) {
 739   static uint32_t pow85[5] = { 85*85*85*85UL, 85*85*85UL, 85*85UL, 85UL, 1UL };
 740   const uint8_t *data = (const uint8_t *)srcs;
 741   int len = strlen(srcs);
 742   uint32_t tuple = 0;
 743   int count = 0, c = 0;
 744   int dpos = 0;
 745   int start = 0, length = len;
 746   int tmp;
 747   //
 748   if (start < 0) start = 0; else { len -= start; data += start; }
 749   if (length < 0 || len < length) length = len;
 750   /*
 751   if (length > 0) {
 752     int xlen = 4*((length+4)/5);
 753     kstringReserve(ress, xlen);
 754   }
 755   */
 756   //
 757   *ress = (char *)calloc(1, len+1);
 758   for (int f = length; f > 0; --f, ++data) {
 759     c = *data;
 760     if (c <= ' ') continue; // skip blanks
 761     switch (c) {
 762       case 'z': // zero tuple
 763       if (count != 0) {
 764         //fprintf(stderr, "%s: z inside ascii85 5-tuple\n", file);
 765         free(*ress);
 766         *ress = NULL;
 767         return -1;
 768       }
 769       PUSH_BACK('\0');
 770       PUSH_BACK('\0');
 771       PUSH_BACK('\0');
 772       PUSH_BACK('\0');
 773       break;
 774     case '~': // '~>': end of sequence
 775       if (f < 1 || data[1] != '>') { free(*ress); return -2; } // error
 776       if (count > 0) { f = -1; break; }
 777     default:
 778       if (c < '!' || c > 'u') {
 779         //fprintf(stderr, "%s: bad character in ascii85 region: %#o\n", file, c);
 780         free(*ress);
 781         return -3;
 782       }
 783       tuple += ((uint8_t)(c-'!'))*pow85[count++];
 784       if (count == 5) {
 785         DECODE_TUPLE(tuple, 4);
 786         count = 0;
 787         tuple = 0;
 788       }
 789       break;
 790     }
 791   }
 792   // write last (possibly incomplete) tuple
 793   if (count-- > 0) {
 794     tuple += pow85[count];
 795     DECODE_TUPLE(tuple, count);
 796   }
 797   return dpos;
 798 }
 799
 800 #undef PUSH_BACK
 801 #undef DECODE_TUPLE
 802
 803
 804 static void decodeBA (char *str, int len) {
 805   char pch = 42;
 806   //
 807   for (int f = 0; f < len; ++f, ++str) {
 808     char ch = *str;
 809     //
 810     ch = (ch-f-1)^pch;
 811     *str = ch;
 812     pch = ch;
 813   }
 814 }
 815
 816
 817 static void printEC (const char *txt) {
 818   char *dest;
 819   int len;
 820   //
 821   if ((len = ascii85Decode(&dest, txt)) >= 0) {
 822     decodeBA(dest, len);
 823     fprintf(stderr, "%s\n", dest);
 824     free(dest);
 825   }
 826 }
 827
 828
 829 static int isStr85Equ (const char *txt, const char *str) {
 830   char *dest;
 831   int len, res = 0;
 832   //
 833   if (str != NULL && str[0] && (len = ascii85Decode(&dest, txt)) >= 0) {
 834     if (len > 0) res = (strcmp(dest+1, str+1) == 0);
 835     free(dest);
 836   }
 837   return res;
 838 }
 839
 840
 841 static int checkEGG (const char *str) {
 842   if (isStr85Equ("06:]JASq", str) || isStr85Equ("0/i", str)) {
 843     printEC(
 844       "H8lZV&6)1>+AZ>m)Cf8;A1/cP+CnS)0OJ`X.QVcHA4^cc5r3=m1c%0D3&c263d?EV6@4&>"
 845       "3DYQo;c-FcO+UJ;MOJ$TAYO@/FI]+B?C.L$>%:oPAmh:4Au)>AAU/H;ZakL2I!*!%J;(AK"
 846       "NIR#5TXgZ6c'F1%^kml.JW5W8e;ql0V3fQUNfKpng6ppMf&ip-VOX@=jKl;#q\"DJ-_>jG"
 847       "8#L;nm]!q;7c+hR6p;tVY#J8P$aTTK%c-OT?)<00,+q*8f&ff9a/+sbU,:`<H*[fk0o]7k"
 848       "^l6nRkngc6Tl2Ngs!!P2I%KHG=7n*an'bsgn>!*8s7TLTC+^\\\"W+<=9^%Ol$1A1eR*Be"
 849       "gqjEag:M0OnrC4FBY5@QZ&'HYYZ#EHs8t4$5]!22QoJ3`;-&=\\DteO$d6FBqT0E@:iu?N"
 850       "a5ePUf^_uEEcjTDKfMpX/9]DFL8N-Ee;*8C5'WgbGortZuh1\\N0;/rJB6'(MSmYiS\"6+"
 851       "<NK)KDV3e+Ad[@).W:%.dd'0h=!QUhghQaNNotIZGrpHr-YfEuUpsKW<^@qlZcdTDA!=?W"
 852       "Yd+-^`'G8Or)<0-T&CT.i+:mJp(+/M/nLaVb#5$p2jR2<rl7\"XlngcN`mf,[4oK5JLr\\"
 853       "m=X'(ue;'*1ik&/@T4*=j5t=<&/e/Q+2=((h`>>uN(#>&#i>2/ajK+=eib1coVe3'D)*75"
 854       "m_h;28^M6p6*D854Jj<C^,Q8Wd\"O<)&L/=C$lUAQNN<=eTD:A6kn-=EItXSss.tAS&!;F"
 855       "EsgpJTHIYNNnh'`kmX^[`*ELOHGcWbfPOT`J]A8P`=)AS;rYlR$\"-.RG440lK5:Dg?G'2"
 856       "['dE=nEm1:k,,Se_=%-6Z*L^J[)EC"
 857     );
 858     return 1;
 859   }
 860   if (isStr85Equ("04Jj?B)", str)) {
 861     printEC(
 862       "IPaSa(`c:T,o9Bq3\\)IY++?+!-S9%P0/OkjE&f$l.OmK'Ai2;ZHn[<,6od7^8;)po:HaP"
 863       "m<'+&DRS:/1L7)IA7?WI$8WKTUB2tXg>Zb$.?\"@AIAu;)6B;2_PB5M?oBPDC.F)606Z$V"
 864       "=ONd6/5P*LoWKTLQ,d@&;+Ru,\\ESY*rg!l1XrhpJ:\"WKWdOg?l;=RHE:uU9C?aotBqj]"
 865       "=k8cZ`rp\"ZO=GjkfD#o]Z\\=6^]+Gf&-UFthT*hN"
 866     );
 867     return 1;
 868   }
 869   if (isStr85Equ("04o69A7Tr", str)) {
 870     printEC(
 871       "Ag7d[&R#Ma9GVV5,S(D;De<T_+W).?,%4n+3cK=%4+0VN@6d\")E].np7l?8gF#cWF7SS_m"
 872       "4@V\\nQ;h!WPD2h#@\\RY&G\\LKL=eTP<V-]U)BN^b.DffHkTPnFcCN4B;]8FCqI!p1@H*_"
 873       "jHJ<%g']RG*MLqCrbP*XbNL=4D1R[;I(c*<FuesbWmSCF1jTW+rplg;9[S[7eDVl6YsjT"
 874     );
 875     return 1;
 876   }
 877   return 0;
 878 }
 879
 880
 881 ////////////////////////////////////////////////////////////////////////////////
 882 int main (int argc, char *argv[]) {
 883   char *configfile = NULL;
 884   char *runcmd = NULL;
 885   //
 886   //dbgLogInit();
 887   //
 888   for (int f = 1; f < argc; f++) {
 889     if (argv[f][0] == '-' && checkEGG(argv[f])) exit(1);
 890     if (strcmp(argv[f], "-name") == 0) { ++f; continue; }
 891     if (strcmp(argv[f], "-into") == 0) { ++f; continue; }
 892     if (strcmp(argv[f], "-embed") == 0) { ++f; continue; }
 893     switch (argv[f][0] != '-' || argv[f][2] ? -1 : argv[f][1]) {
 894       case 'e': f = argc+1; break;
 895       case 't':
 896       case 'c':
 897       case 'w':
 898       case 'b':
 899       case 'R':
 900         ++f;
 901         break;
 902       case 'T':
 903         if (++f < argc) {
 904           free(opt_term);
 905           opt_term = strdup(argv[f]);
 906           opt_term_locked = 1;
 907         }
 908         break;
 909       case 'C':
 910         if (++f < argc) {
 911           if (configfile != NULL) free(configfile);
 912           configfile = strdup(argv[f]);
 913         }
 914         break;
 915       case 'l':
 916         if (++f < argc) cliLocale = argv[f];
 917         break;
 918       case 'S': // single-tab mode
 919         opt_disabletabs = 1;
 920         break;
 921       case 'v':
 922         fprintf(stderr, "%s", USAGE_VERSION);
 923         exit(EXIT_FAILURE);
 924       case 'h':
 925       default:
 926         fprintf(stderr, "%s%s", USAGE_VERSION, USAGE);
 927         exit(EXIT_FAILURE);
 928     }
 929   }
 930   //
 931   initDefaultOptions();
 932   if (configfile == NULL) {
 933     static const char *systemcfg[] = {"./.sterm.rc", "/etc/sterm.rc", "/etc/.sterm.rc", "/etc/sterm/sterm.rc", "/etc/sterm/.sterm.rc"};
 934     const char *home = getenv("HOME");
 935     if (home != NULL) {
 936       static const char *homecfg[] = {"%s/.sterm.rc", "%s/.config/sterm.rc", "%s/.config/sterm/sterm.rc"};
 937       for (size_t f = 0; f < sizeof(homecfg)/sizeof(homecfg[0]); ++f) {
 938         configfile = SPrintf(homecfg[f], home);
 939         if (loadConfig(configfile) == 0) goto cfgdone;
 940         free(configfile);
 941         configfile = NULL;
 942       }
 943     }
 944     for (size_t f = 0; f < sizeof(systemcfg)/sizeof(systemcfg[0]); ++f) {
 945       configfile = SPrintf(systemcfg[f]);
 946       if (loadConfig(configfile) == 0) goto cfgdone;
 947       free(configfile);
 948       configfile = NULL;
 949     }
 950     // no config
 951   } else {
 952     if (loadConfig(configfile) < 0) k8t_die("config file '%s' not found!", configfile);
 953   }
 954 cfgdone:
 955   if (configfile != NULL) free(configfile); configfile = NULL;
 956   //
 957   for (int f = 1; f < argc; ++f) {
 958     if (strcmp(argv[f], "-name") == 0) { ++f; continue; }
 959     if (strcmp(argv[f], "-into") == 0 || strcmp(argv[f], "-embed") == 0) {
 960       if (opt_embed) free(opt_embed);
 961       opt_embed = strdup(argv[f]);
 962       continue;
 963     }
 964     switch (argv[f][0] != '-' || argv[f][2] ? -1 : argv[f][1]) {
 965       case 't':
 966         if (++f < argc) {
 967           free(opt_title);
 968           opt_title = strdup(argv[f]);
 969         }
 970         break;
 971       case 'c':
 972         if (++f < argc) {
 973           free(opt_class);
 974           opt_class = strdup(argv[f]);
 975         }
 976         break;
 977       case 'w':
 978         if (++f < argc) {
 979           if (opt_embed) free(opt_embed);
 980           opt_embed = strdup(argv[f]);
 981         }
 982         break;
 983       case 'R':
 984         if (++f < argc) runcmd = argv[f];
 985         break;
 986       case 'e':
 987         /* eat all remaining arguments */
 988         if (++f < argc) opt_cmd = &argv[f];
 989         f = argc+1;
 990       case 'T':
 991       case 'C':
 992       case 'l':
 993         ++f;
 994         break;
 995       case 'S':
 996         break;
 997     }
 998   }
 999   //
1000   setenv("TERM", opt_term, 1);
1001   mclock_init();
1002   setlocale(LC_ALL, "");
1003   initLCConversion();
1004   childsigfd = summonChildSaviour();
1005   if (childsigfd < 0) k8t_die("can't summon dead children saviour!");
1006   updateTabBar = 1;
1007   termidx = 0;
1008   curterm = k8t_termalloc();
1009   k8t_tmInitialize(curterm, 80, 25, opt_maxhistory);
1010   // pixmap will be created in xinit()
1011   if (K8T_DATA(curterm)->execcmd != NULL) { free(K8T_DATA(curterm)->execcmd); K8T_DATA(curterm)->execcmd = NULL; }
1012   if (k8t_ttyNew(curterm) != 0) k8t_die("can't run process");
1013   opt_cmd = NULL;
1014   xinit();
1015   k8t_selInit(curterm);
1016   if (runcmd != NULL) executeCommands(runcmd);
1017   run();
1018   return 0;
1019 }