src/misc.c

   1 /*
   2  *  Window Maker window manager
   3  *
   4  *  Copyright (c) 1997, 1998 Alfredo K. Kojima
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19  *  USA.
  20  */
  21 #include "wconfig.h"
  22
  23 #include <X11/Xlib.h>
  24 #include <X11/Xutil.h>
  25 #include <X11/Xatom.h>
  26 #include <sys/stat.h>
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <unistd.h>
  31 #include <stdarg.h>
  32 #include <pwd.h>
  33 #include <math.h>
  34 #include <time.h>
  35
  36 #include <WUtil.h>
  37 #include <wraster.h>
  38
  39
  40 #include "WindowMaker.h"
  41 #include "GNUstep.h"
  42 #include "screen.h"
  43 #include "wcore.h"
  44 #include "window.h"
  45 #include "framewin.h"
  46 #include "funcs.h"
  47 #include "defaults.h"
  48 #include "dialog.h"
  49 #include "xutil.h"
  50 #include "xmodifier.h"
  51
  52
  53 /**** global variables *****/
  54
  55 extern char *DisplayName;
  56
  57 extern WPreferences wPreferences;
  58
  59 extern Time LastTimestamp;
  60
  61 #ifdef OFFIX_DND
  62 extern Atom _XA_DND_SELECTION;
  63 #endif
  64
  65
  66 #ifdef USECPP
  67 static void
  68 putdef(char *line, char *name, char *value)
  69 {
  70     if (!value) {
  71         wwarning(_("could not define value for %s for cpp"), name);
  72         return;
  73     }
  74     strcat(line, name);
  75     strcat(line, value);
  76 }
  77
  78
  79
  80 static void
  81 putidef(char *line, char *name, int value)
  82 {
  83     char tmp[64];
  84     sprintf(tmp, "%i", value);
  85     strcat(line, name);
  86     strcat(line, tmp);
  87 }
  88
  89
  90 static char*
  91 username()
  92 {
  93     char *tmp;
  94
  95     tmp = getlogin();
  96     if (!tmp) {
  97         struct passwd *user;
  98
  99         user = getpwuid(getuid());
 100         if (!user) {
 101             wsyserror(_("could not get password entry for UID %i"), getuid());
 102             return NULL;
 103         }
 104         if (!user->pw_name) {
 105             return NULL;
 106         } else {
 107             return user->pw_name;
 108         }
 109     }
 110     return tmp;
 111 }
 112
 113 char *
 114 MakeCPPArgs(char *path)
 115 {
 116     int i;
 117     char buffer[MAXLINE], *buf, *line;
 118     Visual *visual;
 119     char *tmp;
 120
 121     line = wmalloc(MAXLINE);
 122     *line = 0;
 123     i=1;
 124     if ((buf=getenv("HOSTNAME"))!=NULL) {
 125         if (buf[0]=='(') {
 126             wwarning(_("your machine is misconfigured. HOSTNAME is set to %s"),
 127                      buf);
 128         } else
 129           putdef(line, " -DHOST=", buf);
 130     } else if ((buf=getenv("HOST"))!=NULL) {
 131         if (buf[0]=='(') {
 132             wwarning(_("your machine is misconfigured. HOST is set to %s"),
 133                      buf);
 134         } else
 135           putdef(line, " -DHOST=", buf);
 136     }
 137     buf = username();
 138     if (buf)
 139       putdef(line, " -DUSER=", buf);
 140     putidef(line, " -DUID=", getuid());
 141     buf = XDisplayName(DisplayString(dpy));
 142     putdef(line, " -DDISPLAY=", buf);
 143     putdef(line, " -DWM_VERSION=", VERSION);
 144
 145     visual = DefaultVisual(dpy, DefaultScreen(dpy));
 146     putidef(line, " -DVISUAL=", visual->class);
 147
 148     putidef(line, " -DDEPTH=", DefaultDepth(dpy, DefaultScreen(dpy)));
 149
 150     putidef(line, " -DSCR_WIDTH=", WidthOfScreen(DefaultScreenOfDisplay(dpy)));
 151     putidef(line, " -DSCR_HEIGHT=",
 152             HeightOfScreen(DefaultScreenOfDisplay(dpy)));
 153
 154     /* put the dir where the menu is being read from to the
 155      * search path */
 156     if (path) {
 157         tmp = wstrdup(path);
 158         buf = strchr(tmp+1, ' ');
 159         if (buf) {
 160             *buf = 0;
 161         }
 162         buf = strrchr(tmp, '/');
 163         if (buf) {
 164             *buf = 0; /* trunc filename */
 165             putdef(line, " -I", tmp);
 166         }
 167         wfree(tmp);
 168     }
 169
 170
 171     /* this should be done just once, but it works this way */
 172     strcpy(buffer, DEF_CONFIG_PATHS);
 173     buf = strtok(buffer, ":");
 174
 175     do {
 176       char fullpath[MAXLINE];
 177
 178       if (buf[0]!='~') {
 179         strcpy(fullpath, buf);
 180       } else {
 181         char * wgethomedir();
 182         /* home is statically allocated. Don't free it! */
 183         char *home = wgethomedir();
 184
 185         strcpy(fullpath, home);
 186         strcat(fullpath, &(buf[1]));
 187       }
 188
 189       putdef(line, " -I", fullpath);
 190
 191     } while ((buf = strtok(NULL, ":"))!=NULL);
 192
 193 #undef arg
 194 #ifdef DEBUG
 195     puts("CPP ARGS");
 196     puts(line);
 197 #endif
 198     return line;
 199 }
 200 #endif /* USECPP */
 201
 202
 203
 204
 205 #if 0
 206 /*
 207  * Is win2 below win1?
 208  */
 209 static Bool
 210 isBelow(WWindow *win1, WWindow *win2)
 211 {
 212     int i;
 213     WCoreWindow *tmp;
 214
 215     tmp = win1->frame->core->stacking->under;
 216     while (tmp) {
 217         if (tmp == win2->frame->core)
 218             return True;
 219         tmp = tmp->stacking->under;
 220     }
 221
 222     for (i=win1->frame->core->stacking->window_level-1; i>=0; i--) {
 223         tmp = win1->screen_ptr->stacking_list[i];
 224         while (tmp) {
 225             if (tmp == win2->frame->core)
 226                 return True;
 227             tmp = tmp->stacking->under;
 228         }
 229     }
 230     return True;
 231 }
 232 #endif
 233
 234
 235
 236 /*
 237  *  XFetchName Wrapper
 238  *
 239  */
 240 Bool
 241 wFetchName(dpy, win, winname)
 242 Display *dpy;
 243 Window win;
 244 char **winname;
 245 {
 246     XTextProperty text_prop;
 247     char **list;
 248     int num;
 249
 250     if (XGetWMName(dpy, win, &text_prop)) {
 251         if (text_prop.value && text_prop.nitems > 0) {
 252             if (text_prop.encoding == XA_STRING) {
 253                 *winname = wstrdup((char *)text_prop.value);
 254                 XFree(text_prop.value);
 255             } else {
 256                 text_prop.nitems = strlen((char *)text_prop.value);
 257                 if (XmbTextPropertyToTextList(dpy, &text_prop, &list, &num) >=
 258                     Success && num > 0 && *list) {
 259                     XFree(text_prop.value);
 260                     *winname = wstrdup(*list);
 261                     XFreeStringList(list);
 262                 } else {
 263                     *winname = wstrdup((char *)text_prop.value);
 264                     XFree(text_prop.value);
 265                 }
 266             }
 267         } else {
 268             /* the title is set, but it was set to none */
 269             *winname = wstrdup("");
 270         }
 271         return True;
 272     } else {
 273         /* the hint is probably not set */
 274         *winname = NULL;
 275
 276         return False;
 277     }
 278 }
 279
 280 /*
 281  *  XGetIconName Wrapper
 282  *
 283  */
 284
 285 Bool
 286 wGetIconName(dpy, win, iconname)
 287 Display *dpy;
 288 Window win;
 289 char **iconname;
 290 {
 291     XTextProperty text_prop;
 292     char **list;
 293     int num;
 294
 295     if (XGetWMIconName(dpy, win, &text_prop) != 0 && text_prop.value
 296         && text_prop.nitems > 0) {
 297         if (text_prop.encoding == XA_STRING)
 298             *iconname = (char *)text_prop.value;
 299         else {
 300             text_prop.nitems = strlen((char *)text_prop.value);
 301             if (XmbTextPropertyToTextList(dpy, &text_prop, &list, &num) >=
 302                 Success && num > 0 && *list) {
 303                 XFree(text_prop.value);
 304                 *iconname = wstrdup(*list);
 305                 XFreeStringList(list);
 306             } else
 307                 *iconname = (char *)text_prop.value;
 308         }
 309         return True;
 310     }
 311     *iconname = NULL;
 312     return False;
 313 }
 314
 315
 316 static void
 317 eatExpose()
 318 {
 319     XEvent event, foo;
 320
 321     /* compress all expose events into a single one */
 322
 323     if (XCheckMaskEvent(dpy, ExposureMask, &event)) {
 324         /* ignore other exposure events for this window */
 325         while (XCheckWindowEvent(dpy, event.xexpose.window, ExposureMask,
 326                                &foo));
 327         /* eat exposes for other windows */
 328         eatExpose();
 329
 330         event.xexpose.count = 0;
 331         XPutBackEvent(dpy, &event);
 332     }
 333 }
 334
 335
 336 void
 337 SlideWindow(Window win, int from_x, int from_y, int to_x, int to_y)
 338 {
 339     time_t time0 = time(NULL);
 340     float dx, dy, x=from_x, y=from_y, sx, sy, px, py;
 341     int dx_is_bigger=0;
 342
 343     /* animation parameters */
 344     static struct {
 345         int delay;
 346         int steps;
 347         int slowdown;
 348     } apars[5] = {
 349         {ICON_SLIDE_DELAY_UF, ICON_SLIDE_STEPS_UF, ICON_SLIDE_SLOWDOWN_UF},
 350         {ICON_SLIDE_DELAY_F, ICON_SLIDE_STEPS_F, ICON_SLIDE_SLOWDOWN_F},
 351         {ICON_SLIDE_DELAY_M, ICON_SLIDE_STEPS_M, ICON_SLIDE_SLOWDOWN_M},
 352         {ICON_SLIDE_DELAY_S, ICON_SLIDE_STEPS_S, ICON_SLIDE_SLOWDOWN_S},
 353         {ICON_SLIDE_DELAY_U, ICON_SLIDE_STEPS_U, ICON_SLIDE_SLOWDOWN_U}};
 354
 355
 356
 357     dx = (float)(to_x-from_x);
 358     dy = (float)(to_y-from_y);
 359     sx = (dx == 0 ? 0 : fabs(dx)/dx);
 360     sy = (dy == 0 ? 0 : fabs(dy)/dy);
 361
 362     if (fabs(dx) > fabs(dy)) {
 363         dx_is_bigger = 1;
 364     }
 365
 366     if (dx_is_bigger) {
 367         px = dx / apars[(int)wPreferences.icon_slide_speed].slowdown;
 368         if (px < apars[(int)wPreferences.icon_slide_speed].steps && px > 0)
 369             px = apars[(int)wPreferences.icon_slide_speed].steps;
 370         else if (px > -apars[(int)wPreferences.icon_slide_speed].steps && px < 0)
 371             px = -apars[(int)wPreferences.icon_slide_speed].steps;
 372         py = (sx == 0 ? 0 : px*dy/dx);
 373     } else {
 374         py = dy / apars[(int)wPreferences.icon_slide_speed].slowdown;
 375         if (py < apars[(int)wPreferences.icon_slide_speed].steps && py > 0)
 376             py = apars[(int)wPreferences.icon_slide_speed].steps;
 377         else if (py > -apars[(int)wPreferences.icon_slide_speed].steps && py < 0)
 378             py = -apars[(int)wPreferences.icon_slide_speed].steps;
 379         px = (sy == 0 ? 0 : py*dx/dy);
 380     }
 381
 382     while (x != to_x || y != to_y) {
 383         x += px;
 384         y += py;
 385         if ((px<0 && (int)x < to_x) || (px>0 && (int)x > to_x))
 386             x = (float)to_x;
 387         if ((py<0 && (int)y < to_y) || (py>0 && (int)y > to_y))
 388             y = (float)to_y;
 389
 390         if (dx_is_bigger) {
 391             px = px * (1.0 - 1/(float)apars[(int)wPreferences.icon_slide_speed].slowdown);
 392             if (px < apars[(int)wPreferences.icon_slide_speed].steps && px > 0)
 393                 px = apars[(int)wPreferences.icon_slide_speed].steps;
 394             else if (px > -apars[(int)wPreferences.icon_slide_speed].steps && px < 0)
 395                 px = -apars[(int)wPreferences.icon_slide_speed].steps;
 396             py = (sx == 0 ? 0 : px*dy/dx);
 397         } else {
 398             py = py * (1.0 - 1/(float)apars[(int)wPreferences.icon_slide_speed].slowdown);
 399             if (py < apars[(int)wPreferences.icon_slide_speed].steps && py > 0)
 400                 py = apars[(int)wPreferences.icon_slide_speed].steps;
 401             else if (py > -apars[(int)wPreferences.icon_slide_speed].steps && py < 0)
 402                 py = -apars[(int)wPreferences.icon_slide_speed].steps;
 403             px = (sy == 0 ? 0 : py*dx/dy);
 404         }
 405
 406         XMoveWindow(dpy, win, (int)x, (int)y);
 407         XFlush(dpy);
 408         if (apars[(int)wPreferences.icon_slide_speed].delay > 0) {
 409             wusleep(apars[(int)wPreferences.icon_slide_speed].delay*1000L);
 410         }
 411         if (time(NULL) - time0 > MAX_ANIMATION_TIME)
 412             break;
 413     }
 414     XMoveWindow(dpy, win, to_x, to_y);
 415
 416     XSync(dpy, 0);
 417     /* compress expose events */
 418     eatExpose();
 419 }
 420
 421
 422 char*
 423 ShrinkString(WMFont *font, char *string, int width)
 424 {
 425     int w, w1=0;
 426     int p;
 427     char *pos;
 428     char *text;
 429     int p1, p2, t;
 430
 431     if (wPreferences.multi_byte_text)
 432         return wstrdup(string);
 433
 434     p = strlen(string);
 435     w = WMWidthOfString(font, string, p);
 436     text = wmalloc(strlen(string)+8);
 437     strcpy(text, string);
 438     if (w<=width)
 439       return text;
 440
 441     pos = strchr(text, ' ');
 442     if (!pos)
 443       pos = strchr(text, ':');
 444
 445     if (pos) {
 446         *pos = 0;
 447         p = strlen(text);
 448         w1 = WMWidthOfString(font, text, p);
 449         if (w1 > width) {
 450             w1 = 0;
 451             p = 0;
 452             *pos = ' ';
 453             *text = 0;
 454         } else {
 455             *pos = 0;
 456             width -= w1;
 457             p++;
 458         }
 459         string += p;
 460         p=strlen(string);
 461     } else {
 462         *text=0;
 463     }
 464     strcat(text, "...");
 465     width -= WMWidthOfString(font, "...", 3);
 466
 467     pos = string;
 468     p1=0;
 469     p2=p;
 470     t = (p2-p1)/2;
 471     while (p2>p1 && p1!=t) {
 472         w = WMWidthOfString(font, &string[p-t], t);
 473         if (w>width) {
 474             p2 = t;
 475             t = p1+(p2-p1)/2;
 476         } else if (w<width) {
 477             p1 = t;
 478             t = p1+(p2-p1)/2;
 479         } else
 480           p2=p1=t;
 481     }
 482     strcat(text, &string[p-p1]);
 483
 484     return text;
 485 }
 486
 487
 488 char*
 489 FindImage(char *paths, char *file)
 490 {
 491     char *tmp, *path;
 492
 493     tmp = strrchr(file, ':');
 494     if (tmp) {
 495         *tmp = 0;
 496         path = wfindfile(paths, file);
 497         *tmp = ':';
 498     }
 499     if (!tmp || !path) {
 500         path = wfindfile(paths, file);
 501     }
 502
 503     return path;
 504 }
 505
 506
 507 static void
 508 timeoutHandler(void *data)
 509 {
 510     *(int*)data = 1;
 511 }
 512
 513
 514 static char*
 515 getTextSelection(WScreen *screen, Atom selection)
 516 {
 517     int buffer = -1;
 518
 519     switch (selection) {
 520      case XA_CUT_BUFFER0:
 521         buffer = 0;
 522         break;
 523      case XA_CUT_BUFFER1:
 524         buffer = 1;
 525         break;
 526      case XA_CUT_BUFFER2:
 527         buffer = 2;
 528         break;
 529      case XA_CUT_BUFFER3:
 530         buffer = 3;
 531         break;
 532      case XA_CUT_BUFFER4:
 533         buffer = 4;
 534         break;
 535      case XA_CUT_BUFFER5:
 536         buffer = 5;
 537         break;
 538      case XA_CUT_BUFFER6:
 539         buffer = 6;
 540         break;
 541      case XA_CUT_BUFFER7:
 542         buffer = 7;
 543         break;
 544     }
 545     if (buffer >= 0) {
 546         char *data;
 547         int size;
 548
 549         data = XFetchBuffer(dpy, &size, buffer);
 550
 551         return data;
 552     } else {
 553         char *data;
 554         int bits;
 555         Atom rtype;
 556         unsigned long len, bytes;
 557         WMHandlerID timer;
 558         int timeout = 0;
 559         XEvent ev;
 560         static Atom clipboard = 0;
 561
 562         if (!clipboard)
 563             clipboard = XInternAtom(dpy, "CLIPBOARD", False);
 564
 565         XDeleteProperty(dpy, screen->info_window, clipboard);
 566
 567         XConvertSelection(dpy, selection, XA_STRING,
 568                           clipboard, screen->info_window,
 569                           CurrentTime);
 570
 571         timer = WMAddTimerHandler(1000, timeoutHandler, &timeout);
 572
 573         while (!XCheckTypedWindowEvent(dpy, screen->info_window,
 574                                        SelectionNotify, &ev) && !timeout);
 575
 576         if (!timeout) {
 577             WMDeleteTimerHandler(timer);
 578         } else {
 579             wwarning("selection retrieval timed out");
 580             return NULL;
 581         }
 582
 583         /* nobody owns the selection or the current owner has
 584          * nothing to do with what we need */
 585         if (ev.xselection.property == None) {
 586             return NULL;
 587         }
 588
 589         if (XGetWindowProperty(dpy, screen->info_window,
 590                                clipboard, 0, 1024,
 591                                False, XA_STRING, &rtype, &bits, &len,
 592                                &bytes, (unsigned char**)&data)!=Success) {
 593             return NULL;
 594         }
 595         if (rtype!=XA_STRING || bits!=8) {
 596             wwarning("invalid data in text selection");
 597             if (data)
 598                 XFree(data);
 599             return NULL;
 600         }
 601         return data;
 602     }
 603 }
 604
 605 static char*
 606 getselection(WScreen *scr)
 607 {
 608     char *tmp;
 609
 610     tmp = getTextSelection(scr, XA_PRIMARY);
 611     if (!tmp)
 612         tmp = getTextSelection(scr, XA_CUT_BUFFER0);
 613     return tmp;
 614 }
 615
 616
 617 static char*
 618 getuserinput(WScreen *scr, char *line, int *ptr)
 619 {
 620     char *ret;
 621     char *title;
 622     char *prompt;
 623     int j, state;
 624     int begin = 0;
 625     char tbuffer[256], pbuffer[256];
 626
 627     title = _("Program Arguments");
 628     prompt = _("Enter command arguments:");
 629     ret = NULL;
 630
 631 #define _STARTING 0
 632 #define _TITLE 1
 633 #define _PROMPT 2
 634 #define _DONE 3
 635
 636     state = _STARTING;
 637     j = 0;
 638     for (; line[*ptr]!=0 && state!=_DONE; (*ptr)++) {
 639         switch (state) {
 640          case _STARTING:
 641             if (line[*ptr]=='(') {
 642                 state = _TITLE;
 643                 begin = *ptr+1;
 644             } else {
 645                 state = _DONE;
 646             }
 647             break;
 648
 649          case _TITLE:
 650             if (j <= 0 && line[*ptr]==',') {
 651
 652                 j = 0;
 653                 if (*ptr > begin) {
 654                     strncpy(tbuffer, &line[begin], WMIN(*ptr-begin, 255));
 655                     tbuffer[WMIN(*ptr-begin, 255)] = 0;
 656                     title = (char*)tbuffer;
 657                 }
 658                 begin = *ptr+1;
 659                 state = _PROMPT;
 660
 661             } else if (j <= 0 && line[*ptr]==')') {
 662
 663                 if (*ptr > begin) {
 664                     strncpy(tbuffer, &line[begin], WMIN(*ptr-begin, 255));
 665                     tbuffer[WMIN(*ptr-begin, 255)] = 0;
 666                     title = (char*)tbuffer;
 667                 }
 668                 state = _DONE;
 669
 670             } else if (line[*ptr]=='(') {
 671                 j++;
 672             } else if (line[*ptr]==')') {
 673                 j--;
 674             }
 675
 676             break;
 677
 678          case _PROMPT:
 679             if (line[*ptr]==')' && j==0) {
 680
 681                 if (*ptr-begin > 1) {
 682                     strncpy(pbuffer, &line[begin], WMIN(*ptr-begin, 255));
 683                     pbuffer[WMIN(*ptr-begin, 255)] = 0;
 684                     prompt = (char*)pbuffer;
 685                 }
 686                 state = _DONE;
 687             } else if (line[*ptr]=='(')
 688                     j++;
 689             else if (line[*ptr]==')')
 690                 j--;
 691             break;
 692         }
 693     }
 694     (*ptr)--;
 695 #undef _STARTING
 696 #undef _TITLE
 697 #undef _PROMPT
 698 #undef _DONE
 699
 700     if (!wInputDialog(scr, title, prompt, &ret))
 701         return NULL;
 702     else
 703         return ret;
 704 }
 705
 706
 707 #ifdef OFFIX_DND
 708 static char*
 709 get_dnd_selection(WScreen *scr)
 710 {
 711     XTextProperty text_ret;
 712     int result;
 713     char **list;
 714     char *flat_string;
 715     int count;
 716
 717     result=XGetTextProperty(dpy, scr->root_win, &text_ret, _XA_DND_SELECTION);
 718
 719     if (result==0 || text_ret.value==NULL || text_ret.encoding==None
 720         || text_ret.format==0 || text_ret.nitems == 0) {
 721         wwarning(_("unable to get dropped data from DND drop"));
 722         return NULL;
 723     }
 724
 725     XTextPropertyToStringList(&text_ret, &list, &count);
 726
 727     if (!list || count<1) {
 728         XFree(text_ret.value);
 729         wwarning(_("error getting dropped data from DND drop"));
 730         return NULL;
 731     }
 732
 733     flat_string = wtokenjoin(list, count);
 734     if (!flat_string) {
 735         wwarning(_("out of memory while getting data from DND drop"));
 736     }
 737
 738     XFreeStringList(list);
 739     XFree(text_ret.value);
 740     return flat_string;
 741 }
 742 #endif /* OFFIX_DND */
 743
 744
 745 #define S_NORMAL 0
 746 #define S_ESCAPE 1
 747 #define S_OPTION 2
 748
 749 /*
 750  * state        input   new-state       output
 751  * NORMAL       %       OPTION          <nil>
 752  * NORMAL       \       ESCAPE          <nil>
 753  * NORMAL       etc.    NORMAL          <input>
 754  * ESCAPE       any     NORMAL          <input>
 755  * OPTION       s       NORMAL          <selection buffer>
 756  * OPTION       w       NORMAL          <selected window id>
 757  * OPTION       a       NORMAL          <input text>
 758  * OPTION       d       NORMAL          <OffiX DND selection object>
 759  * OPTION       W       NORMAL          <current workspace>
 760  * OPTION       etc.    NORMAL          %<input>
 761  */
 762 #define TMPBUFSIZE 64
 763 char*
 764 ExpandOptions(WScreen *scr, char *cmdline)
 765 {
 766     int ptr, optr, state, len, olen;
 767     char *out, *nout;
 768     char *selection=NULL;
 769     char *user_input=NULL;
 770 #if defined(OFFIX_DND) || defined(XDND)
 771     char *dropped_thing=NULL;
 772 #endif
 773     char tmpbuf[TMPBUFSIZE];
 774     int slen;
 775
 776     len = strlen(cmdline);
 777     olen = len+1;
 778     out = malloc(olen);
 779     if (!out) {
 780         wwarning(_("out of memory during expansion of \"%s\""));
 781         return NULL;
 782     }
 783     *out = 0;
 784     ptr = 0;                           /* input line pointer */
 785     optr = 0;                          /* output line pointer */
 786     state = S_NORMAL;
 787     while (ptr < len) {
 788         switch (state) {
 789          case S_NORMAL:
 790             switch (cmdline[ptr]) {
 791              case '\\':
 792                 state = S_ESCAPE;
 793                 break;
 794              case '%':
 795                 state = S_OPTION;
 796                 break;
 797              default:
 798                 state = S_NORMAL;
 799                 out[optr++]=cmdline[ptr];
 800                 break;
 801             }
 802             break;
 803          case S_ESCAPE:
 804             switch (cmdline[ptr]) {
 805              case 'n':
 806                 out[optr++]=10;
 807                 break;
 808
 809              case 'r':
 810                 out[optr++]=13;
 811                 break;
 812
 813              case 't':
 814                 out[optr++]=9;
 815                 break;
 816
 817              default:
 818                 out[optr++]=cmdline[ptr];
 819             }
 820             state = S_NORMAL;
 821             break;
 822          case S_OPTION:
 823             state = S_NORMAL;
 824             switch (cmdline[ptr]) {
 825              case 'w':
 826                 if (scr->focused_window
 827                     && scr->focused_window->flags.focused) {
 828                     sprintf(tmpbuf, "0x%x",
 829                             (unsigned int)scr->focused_window->client_win);
 830                     slen = strlen(tmpbuf);
 831                     olen += slen;
 832                     nout = realloc(out,olen);
 833                     if (!nout) {
 834                         wwarning(_("out of memory during expansion of \"%w\""));
 835                         goto error;
 836                     }
 837                     out = nout;
 838                     strcat(out,tmpbuf);
 839                     optr+=slen;
 840                 } else {
 841                     out[optr++]=' ';
 842                 }
 843                 break;
 844
 845              case 'W':
 846                 sprintf(tmpbuf, "0x%x",
 847                         (unsigned int)scr->current_workspace + 1);
 848                 slen = strlen(tmpbuf);
 849                 olen += slen;
 850                 nout = realloc(out,olen);
 851                 if (!nout) {
 852                     wwarning(_("out of memory during expansion of \"%W\""));
 853                     goto error;
 854                 }
 855                 out = nout;
 856                 strcat(out,tmpbuf);
 857                 optr+=slen;
 858                 break;
 859
 860              case 'a':
 861                 ptr++;
 862                 user_input = getuserinput(scr, cmdline, &ptr);
 863                 if (user_input) {
 864                     slen = strlen(user_input);
 865                     olen += slen;
 866                     nout = realloc(out,olen);
 867                     if (!nout) {
 868                         wwarning(_("out of memory during expansion of \"%a\""));
 869                         goto error;
 870                     }
 871                     out = nout;
 872                     strcat(out,user_input);
 873                     optr+=slen;
 874                 } else {
 875                     /* Not an error, but user has Canceled the dialog box.
 876                      * This will make the command to not be performed. */
 877                     goto error;
 878                 }
 879                 break;
 880
 881 #if defined(OFFIX_DND) || defined(XDND)
 882              case 'd':
 883 #ifdef XDND
 884                 if(scr->xdestring) {
 885                     dropped_thing = wstrdup(scr->xdestring);
 886                 }
 887 #endif
 888                 if (!dropped_thing) {
 889                     dropped_thing = get_dnd_selection(scr);
 890                 }
 891                 if (!dropped_thing) {
 892                     scr->flags.dnd_data_convertion_status = 1;
 893                     goto error;
 894                 }
 895                 slen = strlen(dropped_thing);
 896                 olen += slen;
 897                 nout = realloc(out,olen);
 898                 if (!nout) {
 899                     wwarning(_("out of memory during expansion of \"%d\""));
 900                     goto error;
 901                 }
 902                 out = nout;
 903                 strcat(out,dropped_thing);
 904                 optr+=slen;
 905                 break;
 906 #endif /* OFFIX_DND */
 907
 908              case 's':
 909                 if (!selection) {
 910                     selection = getselection(scr);
 911                 }
 912                 if (!selection) {
 913                     wwarning(_("selection not available"));
 914                     goto error;
 915                 }
 916                 slen = strlen(selection);
 917                 olen += slen;
 918                 nout = realloc(out,olen);
 919                 if (!nout) {
 920                     wwarning(_("out of memory during expansion of \"%s\""));
 921                     goto error;
 922                 }
 923                 out = nout;
 924                 strcat(out,selection);
 925                 optr+=slen;
 926                 break;
 927
 928              default:
 929                 out[optr++]='%';
 930                 out[optr++]=cmdline[ptr];
 931             }
 932             break;
 933         }
 934         out[optr]=0;
 935         ptr++;
 936     }
 937     if (selection)
 938       XFree(selection);
 939     return out;
 940
 941     error:
 942     wfree(out);
 943     if (selection)
 944       XFree(selection);
 945     return NULL;
 946 }
 947
 948
 949 /* We don't care for upper/lower case in comparing the keys; so we
 950    have to define our own comparison function here */
 951 BOOL
 952 StringCompareHook(proplist_t pl1, proplist_t pl2)
 953 {
 954     char *str1, *str2;
 955
 956     str1 = PLGetString(pl1);
 957     str2 = PLGetString(pl2);
 958
 959     if (strcasecmp(str1, str2)==0)
 960       return YES;
 961     else
 962       return NO;
 963 }
 964
 965
 966 /* feof doesn't seem to work on pipes */
 967 int
 968 IsEof(FILE * stream)
 969 {
 970     static struct stat stinfo;
 971
 972     fstat(fileno(stream), &stinfo);
 973     return ((S_ISFIFO(stinfo.st_dev) && stinfo.st_size == 0) ||
 974             feof(stream));
 975 }
 976
 977
 978 void
 979 ParseWindowName(proplist_t value, char **winstance, char **wclass, char *where)
 980 {
 981     char *name;
 982
 983     *winstance = *wclass = NULL;
 984
 985     if (!PLIsString(value)) {
 986         wwarning(_("bad window name value in %s state info"), where);
 987         return;
 988     }
 989
 990     name = PLGetString(value);
 991     if (!name || strlen(name)==0) {
 992         wwarning(_("bad window name value in %s state info"), where);
 993         return;
 994     }
 995
 996     UnescapeWM_CLASS(name, winstance, wclass);
 997 }
 998
 999
1000 #if 0
1001 static char*
1002 keysymToString(KeySym keysym, unsigned int state)
1003 {
1004     XKeyEvent kev;
1005     char *buf = wmalloc(20);
1006     int count;
1007
1008     kev.display = dpy;
1009     kev.type = KeyPress;
1010     kev.send_event = False;
1011     kev.window = DefaultRootWindow(dpy);
1012     kev.root = DefaultRootWindow(dpy);
1013     kev.same_screen = True;
1014     kev.subwindow = kev.root;
1015     kev.serial = 0x12344321;
1016     kev.time = CurrentTime;
1017     kev.state = state;
1018     kev.keycode = XKeysymToKeycode(dpy, keysym);
1019     count = XLookupString(&kev, buf, 19, NULL, NULL);
1020     buf[count] = 0;
1021
1022     return buf;
1023 }
1024 #endif
1025
1026 static char *
1027 appendrealloc(char *a, char *b)
1028 {
1029     if (a == NULL)
1030         return wstrdup(b);
1031     else {
1032         char *c = wstrappend(a, b);
1033         wfree(a);
1034         return c;
1035     }
1036 }
1037
1038
1039 char*
1040 GetShortcutString(char *text)
1041 {
1042     char *buffer = NULL;
1043     char *k;
1044     int modmask = 0;
1045 /*    KeySym ksym;*/
1046     int control = 0;
1047     char *tmp;
1048
1049     tmp = text = wstrdup(text);
1050
1051     /* get modifiers */
1052     while ((k = strchr(text, '+'))!=NULL) {
1053         int mod;
1054
1055         *k = 0;
1056         mod = wXModifierFromKey(text);
1057         if (mod<0) {
1058             return wstrdup("bug");
1059         }
1060
1061         modmask |= mod;
1062
1063         if (strcasecmp(text, "Meta")==0) {
1064             buffer = appendrealloc(buffer, "M+");
1065         } else if (strcasecmp(text, "Alt")==0) {
1066             buffer = appendrealloc(buffer, "A+");
1067         } else if (strcasecmp(text, "Shift")==0) {
1068             buffer = appendrealloc(buffer, "Sh+");
1069         } else if (strcasecmp(text, "Mod1")==0) {
1070             buffer = appendrealloc(buffer, "M1+");
1071         } else if (strcasecmp(text, "Mod2")==0) {
1072             buffer = appendrealloc(buffer, "M2+");
1073         } else if (strcasecmp(text, "Mod3")==0) {
1074             buffer = appendrealloc(buffer, "M3+");
1075         } else if (strcasecmp(text, "Mod4")==0) {
1076             buffer = appendrealloc(buffer, "M4+");
1077         } else if (strcasecmp(text, "Mod5")==0) {
1078             buffer = appendrealloc(buffer, "M5+");
1079         } else if (strcasecmp(text, "Control")==0) {
1080             control = 1;
1081         } else {
1082             buffer = appendrealloc(buffer, text);
1083         }
1084         text = k+1;
1085     }
1086
1087     if (control) {
1088         buffer = appendrealloc(buffer, "^");
1089     }
1090     buffer = appendrealloc(buffer, text);
1091
1092     /* get key */
1093 /*    ksym = XStringToKeysym(text);
1094     tmp = keysymToString(ksym, modmask);
1095     puts(tmp);
1096     buffer = wstrappend(buffer, tmp);
1097 */
1098     wfree(tmp);
1099
1100     return buffer;
1101 }
1102
1103
1104 char*
1105 EscapeWM_CLASS(char *name, char *class)
1106 {
1107     char *ret;
1108     char *ename = NULL, *eclass = NULL;
1109     int i, j, l;
1110
1111     if (!name && !class)
1112         return NULL;
1113
1114     if (name) {
1115         l = strlen(name);
1116         ename = wmalloc(l*2);
1117         j = 0;
1118         for (i=0; i<l; i++) {
1119             if (name[i]=='\\') {
1120                 ename[j++] = '\\';
1121             } else if (name[i]=='.') {
1122                 ename[j++] = '\\';
1123             }
1124             ename[j++] = name[i];
1125         }
1126         ename[j] = 0;
1127     }
1128     if (class) {
1129         l = strlen(class);
1130         eclass = wmalloc(l*2);
1131         j = 0;
1132         for (i=0; i<l; i++) {
1133             if (class[i]=='\\') {
1134                 eclass[j++] = '\\';
1135             } else if (class[i]=='.') {
1136                 eclass[j++] = '\\';
1137             }
1138             eclass[j++] = class[i];
1139         }
1140         eclass[j] = 0;
1141     }
1142
1143     if (ename && eclass) {
1144         ret = wmalloc(strlen(ename)+strlen(eclass)+4);
1145         sprintf(ret, "%s.%s", ename, eclass);
1146         wfree(ename);
1147         wfree(eclass);
1148     } else if (ename) {
1149         ret = wstrdup(ename);
1150         wfree(ename);
1151     } else {
1152         ret = wstrdup(eclass);
1153         wfree(eclass);
1154     }
1155
1156     return ret;
1157 }
1158
1159
1160 void
1161 UnescapeWM_CLASS(char *str, char **name, char **class)
1162 {
1163     int i, j, k, dot;
1164     Bool esc;
1165
1166     j = strlen(str);
1167     *name = wmalloc(j);
1168     **name = 0;
1169     *class = wmalloc(j);
1170     **class = 0;
1171
1172     /* separate string in 2 parts */
1173     esc = False;
1174     dot = 0;
1175     for (i = 0; i < j; i++) {
1176         if (!esc) {
1177             if (str[i]=='\\') {
1178                 esc = True;
1179             } else if (str[i]=='.') {
1180                 dot = i;
1181                 break;
1182             }
1183         } else {
1184             esc = False;
1185         }
1186     }
1187
1188     /* unescape strings */
1189     esc = False;
1190     k = 0;
1191     for (i = 0; i < dot; i++) {
1192         if (!esc) {
1193             if (str[i]=='\\') {
1194                 esc = True;
1195             } else {
1196                 (*name)[k++] = str[i];
1197             }
1198         } else {
1199             (*name)[k++] = str[i];
1200             esc = False;
1201         }
1202     }
1203     (*name)[k] = 0;
1204
1205     esc = False;
1206     k = 0;
1207     for (i = dot+1; i<j; i++) {
1208         if (!esc) {
1209             if (str[i]=='\\') {
1210                 esc = True;
1211             } else {
1212                 (*class)[k++] = str[i];
1213             }
1214         } else {
1215             esc = False;
1216         }
1217     }
1218     (*class)[k] = 0;
1219
1220     if (!*name) {
1221         wfree(*name);
1222         *name = NULL;
1223     }
1224     if (!*class) {
1225         wfree(*class);
1226         *class = NULL;
1227     }
1228 }
1229
1230
1231
1232 void
1233 SendHelperMessage(WScreen *scr, char type, int workspace, char *msg)
1234 {
1235     unsigned char *buffer;
1236     int len;
1237     int i;
1238     char buf[16];
1239
1240     if (!scr->flags.backimage_helper_launched) {
1241         return;
1242     }
1243
1244     len = (msg ? strlen(msg) : 0) + (workspace >=0 ? 4 : 0) + 1 ;
1245     buffer = wmalloc(len+5);
1246     sprintf(buf, "%4i", len);
1247     memcpy(buffer, buf, 4);
1248     buffer[4] = type;
1249     i = 5;
1250     if (workspace >= 0) {
1251         sprintf(buf, "%4i", workspace);
1252         memcpy(&buffer[i], buf, 4);
1253         i += 4;
1254         buffer[i] = 0;
1255     }
1256     if (msg)
1257         strcpy(&buffer[i], msg);
1258
1259     if (write(scr->helper_fd, buffer, len+4) < 0) {
1260         wsyserror(_("could not send message to background image helper"));
1261     }
1262     wfree(buffer);
1263 }