src/termswitch.c

   1 #define k8stx_output(buf_,buflen_)  do { \
   2   if (!xw.paste_term || xw.paste_term->dead) { \
   3     xw.paste_term = NULL; \
   4     break; \
   5   } \
   6   if ((buflen_) <= 0) break; \
   7   if (K8T_DATA(xw.paste_term)->cmdline.cmdMode != K8T_CMDMODE_NONE) { \
   8     if (K8T_DATA(xw.paste_term)->cmdline.cmdMode == K8T_CMDMODE_INPUT) { \
   9       tcmdput(xw.paste_term, &K8T_DATA(xw.paste_term)->cmdline, (buf_), (buflen_)); \
  10     } \
  11   } else { \
  12     if (!xw.past_wasbrcp && K8T_ISSET(xw.paste_term, K8T_MODE_BRACPASTE)) { \
  13       xw.past_wasbrcp = 1; \
  14       k8t_ttyWriteStrNoEnc(xw.paste_term, "\x1b[200~"); \
  15     } \
  16     k8t_ttyWrite(xw.paste_term, (buf_), (buflen_)); \
  17   } \
  18 } while (0)
  19
  20
  21 #define k8stx_finish_paste()  do { \
  22   if (xw.paste_term && xw.past_wasbrcp && !xw.paste_term->dead) { \
  23     k8t_ttyWriteStrNoEnc(xw.paste_term, "\x1b[201~"); \
  24   } \
  25   xw.paste_term = NULL; \
  26 } while (0)
  27
  28
  29 ////////////////////////////////////////////////////////////////////////////////
  30 static const char *get_process_name (int pfd) {
  31   static char path[256], res[4097], *c;
  32   int fd;
  33   pid_t pgrp;
  34   if ((pgrp = tcgetpgrp(pfd)) == -1) return NULL;
  35   snprintf(path, sizeof(path), "/proc/%d/cmdline", pgrp);
  36   if ((fd = open(path, O_RDONLY|O_CLOEXEC)) < 0) return NULL;
  37   res[sizeof(res)-1] = 0;
  38   read(fd, res, sizeof(res)-1);
  39   close(fd);
  40   if ((c = strrchr(res, '/')) == NULL) c = res; else ++c;
  41   return c;
  42 }
  43
  44
  45 static const char *get_process_cwd (int pfd) {
  46   static char path[256], res[4097];
  47   pid_t pgrp;
  48   ssize_t n;
  49   if ((pgrp = tcgetpgrp(pfd)) == -1) return NULL;
  50   snprintf(path, sizeof(path), "/proc/%d/cwd", pgrp);
  51   n = readlink(path, res, sizeof(res)-1);
  52   if (n > 0) {
  53     res[n] = '\0';
  54     return res;
  55   }
  56   return NULL;
  57 }
  58
  59
  60 static void fixWindowTitle (const K8Term *t) {
  61   if (t != NULL) {
  62     const char *title = t->title;
  63     //
  64     if (title == NULL || !title[0]) {
  65       title = opt_title;
  66       if (title == NULL) title = "";
  67     }
  68     XStoreName(xw.dpy, xw.win, title);
  69     XChangeProperty(xw.dpy, xw.win, XA_NETWM_NAME, XA_UTF8, 8, PropModeReplace, (const unsigned char *)title, strlen(title));
  70   }
  71 }
  72
  73
  74 static void checkAndFixWindowTitle (K8Term *t, int forceupd) {
  75   if (t != NULL && t->cmdfd >= 0) {
  76     const char *pname, *ppath;
  77     int doupd = 0;
  78     if ((pname = get_process_name(t->cmdfd)) && strcmp(K8T_DATA(t)->lastpname, pname) != 0) {
  79       // new process
  80       int is_mc;
  81       doupd = 1;
  82       //fprintf(stderr, "new process: [%s]\n", pname);
  83       K8T_DATA(t)->titleset = 0;
  84       if (K8T_DATA(t)->lastpname) free(K8T_DATA(t)->lastpname);
  85       K8T_DATA(t)->lastpname = strdup(pname);
  86       is_mc = (strcmp(pname, "mc") == 0 || strcmp(pname, "mcedit") == 0 || strcmp(pname, "mcview") == 0);
  87       if (K8T_DATA(t)->mc_hack_active && !is_mc) {
  88         K8T_DATA(t)->mc_hack_active = 0;
  89         t->clearOnPartialScrollMode = K8T_DATA(t)->old_scroll_mode;
  90       } else if (!K8T_DATA(t)->mc_hack_active && is_mc) {
  91         K8T_DATA(t)->mc_hack_active = 1;
  92         t->clearOnPartialScrollMode = 2;
  93       }
  94     }
  95     if ((ppath = get_process_cwd(t->cmdfd)) != NULL && strcmp(K8T_DATA(t)->lastppath, ppath) != 0) {
  96       // new path
  97       if (K8T_DATA(t)->lastppath != NULL) free(K8T_DATA(t)->lastppath);
  98       K8T_DATA(t)->lastppath = strdup(ppath);
  99       doupd = 1;
 100     }
 101     if (doupd && !K8T_DATA(t)->titleset) {
 102       snprintf(t->title, sizeof(t->title), "%s [%s]", K8T_DATA(t)->lastpname, K8T_DATA(t)->lastppath);
 103     } else {
 104       doupd = 0;
 105     }
 106     if (doupd || forceupd) {
 107       if (t == curterm) fixWindowTitle(t);
 108       updateTabBar = 1;
 109     }
 110   }
 111 }
 112
 113
 114 // find latest active terminal (but not current %-)
 115 static int findTermToSwitch (void) {
 116   int idx = -1;
 117   K8TTimeMSec maxlat = 0;
 118   for (int f = 0; f < term_count; ++f) {
 119     if (curterm != term_array[f] && term_array[f]->lastActiveTime > maxlat) {
 120       maxlat = term_array[f]->lastActiveTime;
 121       idx = f;
 122     }
 123   }
 124   if (idx < 0) {
 125     if (termidx == 0) idx = 0; else idx = termidx+1;
 126     if (idx > term_count) idx = term_count-1;
 127   }
 128   return idx;
 129 }
 130
 131
 132 static void fixFirstTab (void) {
 133   if (termidx < firstVisibleTab) firstVisibleTab = termidx;
 134   else if (termidx > firstVisibleTab+opt_tabcount-1) firstVisibleTab = termidx-opt_tabcount+1;
 135   if (firstVisibleTab < 0) firstVisibleTab = 0;
 136   updateTabBar = 1;
 137 }
 138
 139
 140 static void switchToTerm (int idx, int redraw) {
 141   if (idx >= 0 && idx < term_count && term_array[idx] != NULL && term_array[idx] != curterm) {
 142     K8TTimeMSec tt = mclock_ticks();
 143     //
 144     if (curterm != NULL) curterm->lastActiveTime = tt;
 145     termidx = idx;
 146     curterm = term_array[termidx];
 147     curterm->curbhidden = 0;
 148     curterm->lastBlinkTime = tt;
 149     if (xw.paste_term && xw.paste_term != curterm) k8stx_finish_paste();
 150     //
 151     fixFirstTab();
 152     //
 153     xseturgency(0);
 154     k8t_tmFullDirty(curterm);
 155     fixWindowTitle(curterm);
 156     updateTabBar = 1;
 157     XSetWindowBackground(xw.dpy, xw.win, getColor(curterm->defbg));
 158     xclearunused();
 159     if (redraw) {
 160       k8t_tmFullDirty(curterm);
 161       k8t_drawTerm(curterm, 1);
 162       if (!updateTabBar) updateTabBar = 1;
 163       xdrawTabBar();
 164     }
 165     //FIXME: optimize memory allocations
 166     if (curterm->sel.clip != NULL && curterm->sel.bx >= 0) {
 167       if (lastSelStr != NULL) {
 168         if (strlen(lastSelStr) >= strlen(curterm->sel.clip)) {
 169           strcpy(lastSelStr, curterm->sel.clip);
 170         } else {
 171           free(lastSelStr);
 172           lastSelStr = NULL;
 173         }
 174       }
 175       if (lastSelStr == NULL) lastSelStr = strdup(curterm->sel.clip);
 176       //fprintf(stderr, "newsel: [%s]\n", lastSelStr);
 177     }
 178     xfixsel();
 179     //fprintf(stderr, "curterm #%d\n", termidx);
 180     //fprintf(stderr, "needConv: %d\n", curterm->needConv);
 181   }
 182 }
 183
 184
 185 static K8Term *k8t_termalloc (void) {
 186   K8Term *t;
 187   //
 188   if (term_count >= term_array_size) {
 189     int newsz = ((term_count==0) ? 1 : term_array_size+64);
 190     K8Term **n = realloc(term_array, sizeof(K8Term *)*newsz);
 191     //
 192     if (n == NULL && term_count == 0) k8t_die("out of memory!");
 193     term_array = n;
 194     term_array_size = newsz;
 195   }
 196   if ((t = calloc(1, sizeof(K8Term))) == NULL) return NULL;
 197   //
 198   t->wrbufsize = K8T_WBUFSIZ;
 199   t->deffg = defaultFG;
 200   t->defbg = defaultBG;
 201   t->dead = 1;
 202   t->needConv = (needConversion ? 1 : 0);
 203   t->belltype = (opt_audiblebell?K8T_BELL_AUDIO:0)|(opt_urgentbell?K8T_BELL_URGENT:0);
 204   t->curblink = opt_cursorBlink;
 205   t->curblinkinactive = opt_cursorBlinkInactive;
 206   t->fastredraw = opt_fastredraw;
 207   t->clearOnPartialScrollMode = opt_scrollclear;
 208   //
 209   termSetCallbacks(t);
 210   termSetDefaults(t);
 211   //
 212   term_array[term_count++] = t;
 213   //
 214   return t;
 215 }
 216
 217
 218 // newer delete last terminal!
 219 static void termfree (int idx) {
 220   if (idx >= 0 && idx < term_count && term_array[idx] != NULL) {
 221     K8Term *t = term_array[idx];
 222     K8TermData *td = K8T_DATA(t);
 223     // abort pasting, if there was any
 224     if (xw.paste_term == t) xw.paste_term = NULL;
 225     //
 226     if (K8T_DATA(t)->pid != 0) {
 227       kill(K8T_DATA(t)->pid, SIGKILL);
 228       return;
 229     }
 230     //
 231     if (t->cmdfd >= 0) {
 232       close(t->cmdfd);
 233       t->cmdfd = -1;
 234     }
 235     //
 236     exitcode = K8T_DATA(t)->exitcode;
 237     //
 238     if (K8T_DATA(t)->waitkeypress) return;
 239     //
 240     if (idx == termidx) {
 241       if (term_count > 1) {
 242         t->dead = 1;
 243         //switchToTerm((idx > 0) ? idx-1 : 1, 0);
 244         switchToTerm(findTermToSwitch(), 0);
 245         if (curterm == t) {
 246           fprintf(stderr, "FATAL: cannot find good terminal to switch onto.\n");
 247           curterm = NULL;
 248         }
 249       } else {
 250         curterm = NULL;
 251       }
 252     }
 253     //
 254     for (int y = 0; y < t->row; ++y) free(t->alt[y]);
 255     for (int y = 0; y < t->linecount; ++y) free(t->line[y]);
 256     free(t->dirty);
 257     free(t->alt);
 258     free(t->line);
 259     //
 260     if (td->lastpname != NULL) free(td->lastpname);
 261     if (td->lastppath != NULL) free(td->lastppath);
 262     if (td->execcmd != NULL) free(td->execcmd);
 263     // condense array
 264     if (termidx > idx) --termidx; // it's not current, and current is at the right
 265     for (int f = idx+1; f < term_count; ++f) term_array[f-1] = term_array[f];
 266     --term_count;
 267     //
 268     //if (td->picalloced) XFreePixmap(xw.dpy, td->picbuf);
 269     free(td);
 270     free(t);
 271   }
 272 }
 273
 274
 275 static void termcleanup (void) {
 276   int f = 0, needredraw = 0;
 277
 278   while (f < term_count) {
 279     if (term_array[f]->dead) {
 280       //fprintf(stderr, "found dead term #%d of %d\n", f, term_count);
 281       termfree(f);
 282       //fprintf(stderr, "terms left: %d (curterm=%p)\n", term_count, curterm);
 283       needredraw = 1;
 284     } else {
 285       ++f;
 286     }
 287   }
 288
 289   if (xw.paste_term) {
 290     K8TTimeMSec stt = mclock_ticks();
 291     if (stt < xw.paste_last_activity || stt-xw.paste_last_activity >= 13000) {
 292       //fprintf(stderr, "SELECTION PASTE ABORTED DUE TO TIMEOUT.\n");
 293       k8stx_finish_paste();
 294     }
 295   }
 296
 297   if (needredraw) {
 298     updateTabBar = 1;
 299     k8t_drawTerm(curterm, 1);
 300   }
 301 }