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 <WINGs/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     snprintf(tmp, sizeof(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     pos = string;
 467     p1=0;
 468     p2=p;
 469     t = (p2-p1)/2;
 470     while (p2>p1 && p1!=t) {
 471         w = WMWidthOfString(font, &string[p-t], t);
 472         if (w>width) {
 473             p2 = t;
 474             t = p1+(p2-p1)/2;
 475         } else if (w<width) {
 476             p1 = t;
 477             t = p1+(p2-p1)/2;
 478         } else
 479           p2=p1=t;
 480     }
 481     strcat(text, &string[p-p1]);
 482
 483     return text;
 484 }
 485
 486
 487 char*
 488 FindImage(char *paths, char *file)
 489 {
 490     char *tmp, *path;
 491
 492     tmp = strrchr(file, ':');
 493     if (tmp) {
 494         *tmp = 0;
 495         path = wfindfile(paths, file);
 496         *tmp = ':';
 497     }
 498     if (!tmp || !path) {
 499         path = wfindfile(paths, file);
 500     }
 501
 502     return path;
 503 }
 504
 505
 506 static void
 507 timeoutHandler(void *data)
 508 {
 509     *(int*)data = 1;
 510 }
 511
 512
 513 static char*
 514 getTextSelection(WScreen *screen, Atom selection)
 515 {
 516     int buffer = -1;
 517
 518     switch (selection) {
 519      case XA_CUT_BUFFER0:
 520         buffer = 0;
 521         break;
 522      case XA_CUT_BUFFER1:
 523         buffer = 1;
 524         break;
 525      case XA_CUT_BUFFER2:
 526         buffer = 2;
 527         break;
 528      case XA_CUT_BUFFER3:
 529         buffer = 3;
 530         break;
 531      case XA_CUT_BUFFER4:
 532         buffer = 4;
 533         break;
 534      case XA_CUT_BUFFER5:
 535         buffer = 5;
 536         break;
 537      case XA_CUT_BUFFER6:
 538         buffer = 6;
 539         break;
 540      case XA_CUT_BUFFER7:
 541         buffer = 7;
 542         break;
 543     }
 544     if (buffer >= 0) {
 545         char *data;
 546         int size;
 547
 548         data = XFetchBuffer(dpy, &size, buffer);
 549
 550         return data;
 551     } else {
 552         char *data;
 553         int bits;
 554         Atom rtype;
 555         unsigned long len, bytes;
 556         WMHandlerID timer;
 557         int timeout = 0;
 558         XEvent ev;
 559         static Atom clipboard = 0;
 560
 561         if (!clipboard)
 562             clipboard = XInternAtom(dpy, "CLIPBOARD", False);
 563
 564         XDeleteProperty(dpy, screen->info_window, clipboard);
 565
 566         XConvertSelection(dpy, selection, XA_STRING,
 567                           clipboard, screen->info_window,
 568                           CurrentTime);
 569
 570         timer = WMAddTimerHandler(1000, timeoutHandler, &timeout);
 571
 572         while (!XCheckTypedWindowEvent(dpy, screen->info_window,
 573                                        SelectionNotify, &ev) && !timeout);
 574
 575         if (!timeout) {
 576             WMDeleteTimerHandler(timer);
 577         } else {
 578             wwarning("selection retrieval timed out");
 579             return NULL;
 580         }
 581
 582         /* nobody owns the selection or the current owner has
 583          * nothing to do with what we need */
 584         if (ev.xselection.property == None) {
 585             return NULL;
 586         }
 587
 588         if (XGetWindowProperty(dpy, screen->info_window,
 589                                clipboard, 0, 1024,
 590                                False, XA_STRING, &rtype, &bits, &len,
 591                                &bytes, (unsigned char**)&data)!=Success) {
 592             return NULL;
 593         }
 594         if (rtype!=XA_STRING || bits!=8) {
 595             wwarning("invalid data in text selection");
 596             if (data)
 597                 XFree(data);
 598             return NULL;
 599         }
 600         return data;
 601     }
 602 }
 603
 604 static char*
 605 getselection(WScreen *scr)
 606 {
 607     char *tmp;
 608
 609     tmp = getTextSelection(scr, XA_PRIMARY);
 610     if (!tmp)
 611         tmp = getTextSelection(scr, XA_CUT_BUFFER0);
 612     return tmp;
 613 }
 614
 615
 616 static char*
 617 getuserinput(WScreen *scr, char *line, int *ptr)
 618 {
 619     char *ret;
 620     char *title;
 621     char *prompt;
 622     int j, state;
 623     int begin = 0;
 624     char tbuffer[256], pbuffer[256];
 625
 626     title = _("Program Arguments");
 627     prompt = _("Enter command arguments:");
 628     ret = NULL;
 629
 630 #define _STARTING 0
 631 #define _TITLE 1
 632 #define _PROMPT 2
 633 #define _DONE 3
 634
 635     state = _STARTING;
 636     j = 0;
 637     for (; line[*ptr]!=0 && state!=_DONE; (*ptr)++) {
 638         switch (state) {
 639          case _STARTING:
 640             if (line[*ptr]=='(') {
 641                 state = _TITLE;
 642                 begin = *ptr+1;
 643             } else {
 644                 state = _DONE;
 645             }
 646             break;
 647
 648          case _TITLE:
 649             if (j <= 0 && line[*ptr]==',') {
 650
 651                 j = 0;
 652                 if (*ptr > begin) {
 653                     strncpy(tbuffer, &line[begin], WMIN(*ptr-begin, 255));
 654                     tbuffer[WMIN(*ptr-begin, 255)] = 0;
 655                     title = (char*)tbuffer;
 656                 }
 657                 begin = *ptr+1;
 658                 state = _PROMPT;
 659
 660             } else if (j <= 0 && line[*ptr]==')') {
 661
 662                 if (*ptr > begin) {
 663                     strncpy(tbuffer, &line[begin], WMIN(*ptr-begin, 255));
 664                     tbuffer[WMIN(*ptr-begin, 255)] = 0;
 665                     title = (char*)tbuffer;
 666                 }
 667                 state = _DONE;
 668
 669             } else if (line[*ptr]=='(') {
 670                 j++;
 671             } else if (line[*ptr]==')') {
 672                 j--;
 673             }
 674
 675             break;
 676
 677          case _PROMPT:
 678             if (line[*ptr]==')' && j==0) {
 679
 680                 if (*ptr-begin > 1) {
 681                     strncpy(pbuffer, &line[begin], WMIN(*ptr-begin, 255));
 682                     pbuffer[WMIN(*ptr-begin, 255)] = 0;
 683                     prompt = (char*)pbuffer;
 684                 }
 685                 state = _DONE;
 686             } else if (line[*ptr]=='(')
 687                     j++;
 688             else if (line[*ptr]==')')
 689                 j--;
 690             break;
 691         }
 692     }
 693     (*ptr)--;
 694 #undef _STARTING
 695 #undef _TITLE
 696 #undef _PROMPT
 697 #undef _DONE
 698
 699     if (!wInputDialog(scr, title, prompt, &ret))
 700         return NULL;
 701     else
 702         return ret;
 703 }
 704
 705
 706 #ifdef OFFIX_DND
 707 static char*
 708 get_dnd_selection(WScreen *scr)
 709 {
 710     XTextProperty text_ret;
 711     int result;
 712     char **list;
 713     char *flat_string;
 714     int count;
 715
 716     result=XGetTextProperty(dpy, scr->root_win, &text_ret, _XA_DND_SELECTION);
 717
 718     if (result==0 || text_ret.value==NULL || text_ret.encoding==None
 719         || text_ret.format==0 || text_ret.nitems == 0) {
 720         wwarning(_("unable to get dropped data from DND drop"));
 721         return NULL;
 722     }
 723
 724     XTextPropertyToStringList(&text_ret, &list, &count);
 725
 726     if (!list || count<1) {
 727         XFree(text_ret.value);
 728         wwarning(_("error getting dropped data from DND drop"));
 729         return NULL;
 730     }
 731
 732     flat_string = wtokenjoin(list, count);
 733     if (!flat_string) {
 734         wwarning(_("out of memory while getting data from DND drop"));
 735     }
 736
 737     XFreeStringList(list);
 738     XFree(text_ret.value);
 739     return flat_string;
 740 }
 741 #endif /* OFFIX_DND */
 742
 743
 744 #define S_NORMAL 0
 745 #define S_ESCAPE 1
 746 #define S_OPTION 2
 747
 748 /*
 749  * state        input   new-state       output
 750  * NORMAL       %       OPTION          <nil>
 751  * NORMAL       \       ESCAPE          <nil>
 752  * NORMAL       etc.    NORMAL          <input>
 753  * ESCAPE       any     NORMAL          <input>
 754  * OPTION       s       NORMAL          <selection buffer>
 755  * OPTION       w       NORMAL          <selected window id>
 756  * OPTION       a       NORMAL          <input text>
 757  * OPTION       d       NORMAL          <OffiX DND selection object>
 758  * OPTION       W       NORMAL          <current workspace>
 759  * OPTION       etc.    NORMAL          %<input>
 760  */
 761 #define TMPBUFSIZE 64
 762 char*
 763 ExpandOptions(WScreen *scr, char *cmdline)
 764 {
 765     int ptr, optr, state, len, olen;
 766     char *out, *nout;
 767     char *selection=NULL;
 768     char *user_input=NULL;
 769 #if defined(OFFIX_DND) || defined(XDND)
 770     char *dropped_thing=NULL;
 771 #endif
 772     char tmpbuf[TMPBUFSIZE];
 773     int slen;
 774
 775     len = strlen(cmdline);
 776     olen = len+1;
 777     out = malloc(olen);
 778     if (!out) {
 779         wwarning(_("out of memory during expansion of \"%s\""));
 780         return NULL;
 781     }
 782     *out = 0;
 783     ptr = 0;                           /* input line pointer */
 784     optr = 0;                          /* output line pointer */
 785     state = S_NORMAL;
 786     while (ptr < len) {
 787         switch (state) {
 788          case S_NORMAL:
 789             switch (cmdline[ptr]) {
 790              case '\\':
 791                 state = S_ESCAPE;
 792                 break;
 793              case '%':
 794                 state = S_OPTION;
 795                 break;
 796              default:
 797                 state = S_NORMAL;
 798                 out[optr++]=cmdline[ptr];
 799                 break;
 800             }
 801             break;
 802          case S_ESCAPE:
 803             switch (cmdline[ptr]) {
 804              case 'n':
 805                 out[optr++]=10;
 806                 break;
 807
 808              case 'r':
 809                 out[optr++]=13;
 810                 break;
 811
 812              case 't':
 813                 out[optr++]=9;
 814                 break;
 815
 816              default:
 817                 out[optr++]=cmdline[ptr];
 818             }
 819             state = S_NORMAL;
 820             break;
 821          case S_OPTION:
 822             state = S_NORMAL;
 823             switch (cmdline[ptr]) {
 824              case 'w':
 825                 if (scr->focused_window
 826                     && scr->focused_window->flags.focused) {
 827                     snprintf(tmpbuf, sizeof(tmpbuf), "0x%x",
 828                             (unsigned int)scr->focused_window->client_win);
 829                     slen = strlen(tmpbuf);
 830                     olen += slen;
 831                     nout = realloc(out,olen);
 832                     if (!nout) {
 833                         wwarning(_("out of memory during expansion of \"%w\""));
 834                         goto error;
 835                     }
 836                     out = nout;
 837                     strcat(out,tmpbuf);
 838                     optr+=slen;
 839                 } else {
 840                     out[optr++]=' ';
 841                 }
 842                 break;
 843
 844              case 'W':
 845                 snprintf(tmpbuf, sizeof(tmpbuf), "0x%x",
 846                         (unsigned int)scr->current_workspace + 1);
 847                 slen = strlen(tmpbuf);
 848                 olen += slen;
 849                 nout = realloc(out,olen);
 850                 if (!nout) {
 851                     wwarning(_("out of memory during expansion of \"%W\""));
 852                     goto error;
 853                 }
 854                 out = nout;
 855                 strcat(out,tmpbuf);
 856                 optr+=slen;
 857                 break;
 858
 859              case 'a':
 860                 ptr++;
 861                 user_input = getuserinput(scr, cmdline, &ptr);
 862                 if (user_input) {
 863                     slen = strlen(user_input);
 864                     olen += slen;
 865                     nout = realloc(out,olen);
 866                     if (!nout) {
 867                         wwarning(_("out of memory during expansion of \"%a\""));
 868                         goto error;
 869                     }
 870                     out = nout;
 871                     strcat(out,user_input);
 872                     optr+=slen;
 873                 } else {
 874                     /* Not an error, but user has Canceled the dialog box.
 875                      * This will make the command to not be performed. */
 876                     goto error;
 877                 }
 878                 break;
 879
 880 #if defined(OFFIX_DND) || defined(XDND)
 881              case 'd':
 882 #ifdef XDND
 883                 if(scr->xdestring) {
 884                     dropped_thing = wstrdup(scr->xdestring);
 885                 }
 886 #endif
 887                 if (!dropped_thing) {
 888                     dropped_thing = get_dnd_selection(scr);
 889                 }
 890                 if (!dropped_thing) {
 891                     scr->flags.dnd_data_convertion_status = 1;
 892                     goto error;
 893                 }
 894                 slen = strlen(dropped_thing);
 895                 olen += slen;
 896                 nout = realloc(out,olen);
 897                 if (!nout) {
 898                     wwarning(_("out of memory during expansion of \"%d\""));
 899                     goto error;
 900                 }
 901                 out = nout;
 902                 strcat(out,dropped_thing);
 903                 optr+=slen;
 904                 break;
 905 #endif /* OFFIX_DND */
 906
 907              case 's':
 908                 if (!selection) {
 909                     selection = getselection(scr);
 910                 }
 911                 if (!selection) {
 912                     wwarning(_("selection not available"));
 913                     goto error;
 914                 }
 915                 slen = strlen(selection);
 916                 olen += slen;
 917                 nout = realloc(out,olen);
 918                 if (!nout) {
 919                     wwarning(_("out of memory during expansion of \"%s\""));
 920                     goto error;
 921                 }
 922                 out = nout;
 923                 strcat(out,selection);
 924                 optr+=slen;
 925                 break;
 926
 927              default:
 928                 out[optr++]='%';
 929                 out[optr++]=cmdline[ptr];
 930             }
 931             break;
 932         }
 933         out[optr]=0;
 934         ptr++;
 935     }
 936     if (selection)
 937       XFree(selection);
 938     return out;
 939
 940     error:
 941     wfree(out);
 942     if (selection)
 943       XFree(selection);
 944     return NULL;
 945 }
 946
 947
 948 /* We don't care for upper/lower case in comparing the keys; so we
 949    have to define our own comparison function here */
 950 BOOL
 951 StringCompareHook(proplist_t pl1, proplist_t pl2)
 952 {
 953     char *str1, *str2;
 954
 955     str1 = PLGetString(pl1);
 956     str2 = PLGetString(pl2);
 957
 958     if (strcasecmp(str1, str2)==0)
 959       return YES;
 960     else
 961       return NO;
 962 }
 963
 964
 965 /* feof doesn't seem to work on pipes */
 966 int
 967 IsEof(FILE * stream)
 968 {
 969     static struct stat stinfo;
 970
 971     fstat(fileno(stream), &stinfo);
 972     return ((S_ISFIFO(stinfo.st_dev) && stinfo.st_size == 0) ||
 973             feof(stream));
 974 }
 975
 976
 977 void
 978 ParseWindowName(proplist_t value, char **winstance, char **wclass, char *where)
 979 {
 980     char *name;
 981
 982     *winstance = *wclass = NULL;
 983
 984     if (!PLIsString(value)) {
 985         wwarning(_("bad window name value in %s state info"), where);
 986         return;
 987     }
 988
 989     name = PLGetString(value);
 990     if (!name || strlen(name)==0) {
 991         wwarning(_("bad window name value in %s state info"), where);
 992         return;
 993     }
 994
 995     UnescapeWM_CLASS(name, winstance, wclass);
 996 }
 997
 998
 999 #if 0
1000 static char*
1001 keysymToString(KeySym keysym, unsigned int state)
1002 {
1003     XKeyEvent kev;
1004     char *buf = wmalloc(20);
1005     int count;
1006
1007     kev.display = dpy;
1008     kev.type = KeyPress;
1009     kev.send_event = False;
1010     kev.window = DefaultRootWindow(dpy);
1011     kev.root = DefaultRootWindow(dpy);
1012     kev.same_screen = True;
1013     kev.subwindow = kev.root;
1014     kev.serial = 0x12344321;
1015     kev.time = CurrentTime;
1016     kev.state = state;
1017     kev.keycode = XKeysymToKeycode(dpy, keysym);
1018     count = XLookupString(&kev, buf, 19, NULL, NULL);
1019     buf[count] = 0;
1020
1021     return buf;
1022 }
1023 #endif
1024
1025
1026 char*
1027 GetShortcutString(char *text)
1028 {
1029     char *buffer = NULL;
1030     char *k;
1031     int modmask = 0;
1032 /*    KeySym ksym;*/
1033     int control = 0;
1034     char *tmp;
1035
1036     tmp = text = wstrdup(text);
1037
1038     /* get modifiers */
1039     while ((k = strchr(text, '+'))!=NULL) {
1040         int mod;
1041
1042         *k = 0;
1043         mod = wXModifierFromKey(text);
1044         if (mod<0) {
1045             return wstrdup("bug");
1046         }
1047
1048         modmask |= mod;
1049
1050         if (strcasecmp(text, "Meta")==0) {
1051             buffer = wstrappend(buffer, "M+");
1052         } else if (strcasecmp(text, "Alt")==0) {
1053             buffer = wstrappend(buffer, "A+");
1054         } else if (strcasecmp(text, "Shift")==0) {
1055             buffer = wstrappend(buffer, "Sh+");
1056         } else if (strcasecmp(text, "Mod1")==0) {
1057             buffer = wstrappend(buffer, "M1+");
1058         } else if (strcasecmp(text, "Mod2")==0) {
1059             buffer = wstrappend(buffer, "M2+");
1060         } else if (strcasecmp(text, "Mod3")==0) {
1061             buffer = wstrappend(buffer, "M3+");
1062         } else if (strcasecmp(text, "Mod4")==0) {
1063             buffer = wstrappend(buffer, "M4+");
1064         } else if (strcasecmp(text, "Mod5")==0) {
1065             buffer = wstrappend(buffer, "M5+");
1066         } else if (strcasecmp(text, "Control")==0) {
1067             control = 1;
1068         } else {
1069             buffer = wstrappend(buffer, text);
1070         }
1071         text = k+1;
1072     }
1073
1074     if (control) {
1075         buffer = wstrappend(buffer, "^");
1076     }
1077     buffer = wstrappend(buffer, text);
1078
1079     /* get key */
1080 /*    ksym = XStringToKeysym(text);
1081     tmp = keysymToString(ksym, modmask);
1082     puts(tmp);
1083     buffer = wstrappend(buffer, tmp);
1084 */
1085     wfree(tmp);
1086
1087     return buffer;
1088 }
1089
1090
1091 char*
1092 EscapeWM_CLASS(char *name, char *class)
1093 {
1094     char *ret;
1095     char *ename = NULL, *eclass = NULL;
1096     int i, j, l;
1097
1098     if (!name && !class)
1099         return NULL;
1100
1101     if (name) {
1102         l = strlen(name);
1103         ename = wmalloc(l*2+1);
1104         j = 0;
1105         for (i=0; i<l; i++) {
1106             if (name[i]=='\\') {
1107                 ename[j++] = '\\';
1108             } else if (name[i]=='.') {
1109                 ename[j++] = '\\';
1110             }
1111             ename[j++] = name[i];
1112         }
1113         ename[j] = 0;
1114     }
1115     if (class) {
1116         l = strlen(class);
1117         eclass = wmalloc(l*2+1);
1118         j = 0;
1119         for (i=0; i<l; i++) {
1120             if (class[i]=='\\') {
1121                 eclass[j++] = '\\';
1122             } else if (class[i]=='.') {
1123                 eclass[j++] = '\\';
1124             }
1125             eclass[j++] = class[i];
1126         }
1127         eclass[j] = 0;
1128     }
1129
1130     if (ename && eclass) {
1131         int len = strlen(ename)+strlen(eclass)+4;
1132         ret = wmalloc(len);
1133         snprintf(ret, len, "%s.%s", ename, eclass);
1134         wfree(ename);
1135         wfree(eclass);
1136     } else if (ename) {
1137         ret = wstrdup(ename);
1138         wfree(ename);
1139     } else {
1140         ret = wstrdup(eclass);
1141         wfree(eclass);
1142     }
1143
1144     return ret;
1145 }
1146
1147
1148 void
1149 UnescapeWM_CLASS(char *str, char **name, char **class)
1150 {
1151     int i, j, k, dot;
1152     Bool esc;
1153
1154     j = strlen(str);
1155     *name = wmalloc(j);
1156     **name = 0;
1157     *class = wmalloc(j);
1158     **class = 0;
1159
1160     /* separate string in 2 parts */
1161     esc = False;
1162     dot = 0;
1163     for (i = 0; i < j; i++) {
1164         if (!esc) {
1165             if (str[i]=='\\') {
1166                 esc = True;
1167             } else if (str[i]=='.') {
1168                 dot = i;
1169                 break;
1170             }
1171         } else {
1172             esc = False;
1173         }
1174     }
1175
1176     /* unescape strings */
1177     esc = False;
1178     k = 0;
1179     for (i = 0; i < dot; i++) {
1180         if (!esc) {
1181             if (str[i]=='\\') {
1182                 esc = True;
1183             } else {
1184                 (*name)[k++] = str[i];
1185             }
1186         } else {
1187             (*name)[k++] = str[i];
1188             esc = False;
1189         }
1190     }
1191     (*name)[k] = 0;
1192
1193     esc = False;
1194     k = 0;
1195     for (i = dot+1; i<j; i++) {
1196         if (!esc) {
1197             if (str[i]=='\\') {
1198                 esc = True;
1199             } else {
1200                 (*class)[k++] = str[i];
1201             }
1202         } else {
1203             esc = False;
1204         }
1205     }
1206     (*class)[k] = 0;
1207
1208     if (!*name) {
1209         wfree(*name);
1210         *name = NULL;
1211     }
1212     if (!*class) {
1213         wfree(*class);
1214         *class = NULL;
1215     }
1216 }
1217
1218
1219
1220 void
1221 SendHelperMessage(WScreen *scr, char type, int workspace, char *msg)
1222 {
1223     unsigned char *buffer;
1224     int len;
1225     int i;
1226     char buf[16];
1227
1228     if (!scr->flags.backimage_helper_launched) {
1229         return;
1230     }
1231
1232     len = (msg ? strlen(msg) : 0) + (workspace >=0 ? 4 : 0) + 1 ;
1233     buffer = wmalloc(len+5);
1234     snprintf(buf, len, "%4i", len);
1235     memcpy(buffer, buf, 4);
1236     buffer[4] = type;
1237     i = 5;
1238     if (workspace >= 0) {
1239         snprintf(buf, sizeof(buf), "%4i", workspace);
1240         memcpy(&buffer[i], buf, 4);
1241         i += 4;
1242         buffer[i] = 0;
1243     }
1244     if (msg)
1245         strcpy(&buffer[i], msg);
1246
1247     if (write(scr->helper_fd, buffer, len+4) < 0) {
1248         wsyserror(_("could not send message to background image helper"));
1249     }
1250     wfree(buffer);
1251 }