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         free(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 wFetchName(dpy, win, winname)
 241 Display *dpy;
 242 Window win;
 243 char **winname;
 244 {
 245     XTextProperty text_prop;
 246     char **list;
 247     int num;
 248
 249     if (XGetWMName(dpy, win, &text_prop)) {
 250         if (text_prop.value && text_prop.nitems > 0) {
 251             if (text_prop.encoding == XA_STRING) {
 252                 *winname = wstrdup((char *)text_prop.value);
 253                 XFree(text_prop.value);
 254             } else {
 255                 text_prop.nitems = strlen((char *)text_prop.value);
 256                 if (XmbTextPropertyToTextList(dpy, &text_prop, &list, &num) >=
 257                     Success && num > 0 && *list) {
 258                     XFree(text_prop.value);
 259                     *winname = wstrdup(*list);
 260                     XFreeStringList(list);
 261                 } else {
 262                     *winname = wstrdup((char *)text_prop.value);
 263                     XFree(text_prop.value);
 264                 }
 265             }
 266         } else {
 267             /* the title is set, but it was set to none */
 268             *winname = wstrdup("");
 269         }
 270         return True;
 271     } else {
 272         /* the hint is probably not set */
 273         *winname = NULL;
 274
 275         return False;
 276     }
 277 }
 278
 279 /*
 280  *  XGetIconName Wrapper
 281  *
 282  */
 283
 284 Bool wGetIconName(dpy, win, iconname)
 285 Display *dpy;
 286 Window win;
 287 char **iconname;
 288 {
 289     XTextProperty text_prop;
 290     char **list;
 291     int num;
 292
 293     if (XGetWMIconName(dpy, win, &text_prop) != 0 && text_prop.value
 294         && text_prop.nitems > 0) {
 295         if (text_prop.encoding == XA_STRING)
 296             *iconname = (char *)text_prop.value;
 297         else {
 298             text_prop.nitems = strlen((char *)text_prop.value);
 299             if (XmbTextPropertyToTextList(dpy, &text_prop, &list, &num) >=
 300                 Success && num > 0 && *list) {
 301                 XFree(text_prop.value);
 302                 *iconname = wstrdup(*list);
 303                 XFreeStringList(list);
 304             } else
 305                 *iconname = (char *)text_prop.value;
 306         }
 307         return True;
 308     }
 309     *iconname = NULL;
 310     return False;
 311 }
 312
 313
 314 static void
 315 eatExpose()
 316 {
 317     XEvent event, foo;
 318
 319     /* compress all expose events into a single one */
 320
 321     if (XCheckMaskEvent(dpy, ExposureMask, &event)) {
 322         /* ignore other exposure events for this window */
 323         while (XCheckWindowEvent(dpy, event.xexpose.window, ExposureMask,
 324                                &foo));
 325         /* eat exposes for other windows */
 326         eatExpose();
 327
 328         event.xexpose.count = 0;
 329         XPutBackEvent(dpy, &event);
 330     }
 331 }
 332
 333
 334 void
 335 SlideWindow(Window win, int from_x, int from_y, int to_x, int to_y)
 336 {
 337     time_t time0 = time(NULL);
 338     float dx, dy, x=from_x, y=from_y, sx, sy, px, py;
 339     int dx_is_bigger=0;
 340
 341     /* animation parameters */
 342     static struct {
 343         int delay;
 344         int steps;
 345         int slowdown;
 346     } apars[5] = {
 347         {ICON_SLIDE_DELAY_UF, ICON_SLIDE_STEPS_UF, ICON_SLIDE_SLOWDOWN_UF},
 348         {ICON_SLIDE_DELAY_F, ICON_SLIDE_STEPS_F, ICON_SLIDE_SLOWDOWN_F},
 349         {ICON_SLIDE_DELAY_M, ICON_SLIDE_STEPS_M, ICON_SLIDE_SLOWDOWN_M},
 350         {ICON_SLIDE_DELAY_S, ICON_SLIDE_STEPS_S, ICON_SLIDE_SLOWDOWN_S},
 351         {ICON_SLIDE_DELAY_U, ICON_SLIDE_STEPS_U, ICON_SLIDE_SLOWDOWN_U}};
 352
 353
 354
 355     dx = (float)(to_x-from_x);
 356     dy = (float)(to_y-from_y);
 357     sx = (dx == 0 ? 0 : fabs(dx)/dx);
 358     sy = (dy == 0 ? 0 : fabs(dy)/dy);
 359
 360     if (fabs(dx) > fabs(dy)) {
 361         dx_is_bigger = 1;
 362     }
 363
 364     if (dx_is_bigger) {
 365         px = dx / apars[(int)wPreferences.icon_slide_speed].slowdown;
 366         if (px < apars[(int)wPreferences.icon_slide_speed].steps && px > 0)
 367             px = apars[(int)wPreferences.icon_slide_speed].steps;
 368         else if (px > -apars[(int)wPreferences.icon_slide_speed].steps && px < 0)
 369             px = -apars[(int)wPreferences.icon_slide_speed].steps;
 370         py = (sx == 0 ? 0 : px*dy/dx);
 371     } else {
 372         py = dy / apars[(int)wPreferences.icon_slide_speed].slowdown;
 373         if (py < apars[(int)wPreferences.icon_slide_speed].steps && py > 0)
 374             py = apars[(int)wPreferences.icon_slide_speed].steps;
 375         else if (py > -apars[(int)wPreferences.icon_slide_speed].steps && py < 0)
 376             py = -apars[(int)wPreferences.icon_slide_speed].steps;
 377         px = (sy == 0 ? 0 : py*dx/dy);
 378     }
 379
 380     while (x != to_x || y != to_y) {
 381         x += px;
 382         y += py;
 383         if ((px<0 && (int)x < to_x) || (px>0 && (int)x > to_x))
 384             x = (float)to_x;
 385         if ((py<0 && (int)y < to_y) || (py>0 && (int)y > to_y))
 386             y = (float)to_y;
 387
 388         if (dx_is_bigger) {
 389             px = px * (1.0 - 1/(float)apars[(int)wPreferences.icon_slide_speed].slowdown);
 390             if (px < apars[(int)wPreferences.icon_slide_speed].steps && px > 0)
 391                 px = apars[(int)wPreferences.icon_slide_speed].steps;
 392             else if (px > -apars[(int)wPreferences.icon_slide_speed].steps && px < 0)
 393                 px = -apars[(int)wPreferences.icon_slide_speed].steps;
 394             py = (sx == 0 ? 0 : px*dy/dx);
 395         } else {
 396             py = py * (1.0 - 1/(float)apars[(int)wPreferences.icon_slide_speed].slowdown);
 397             if (py < apars[(int)wPreferences.icon_slide_speed].steps && py > 0)
 398                 py = apars[(int)wPreferences.icon_slide_speed].steps;
 399             else if (py > -apars[(int)wPreferences.icon_slide_speed].steps && py < 0)
 400                 py = -apars[(int)wPreferences.icon_slide_speed].steps;
 401             px = (sy == 0 ? 0 : py*dx/dy);
 402         }
 403
 404         XMoveWindow(dpy, win, (int)x, (int)y);
 405         XFlush(dpy);
 406         if (apars[(int)wPreferences.icon_slide_speed].delay > 0) {
 407             wusleep(apars[(int)wPreferences.icon_slide_speed].delay*1000L);
 408         }
 409         if (time(NULL) - time0 > MAX_ANIMATION_TIME)
 410             break;
 411     }
 412     XMoveWindow(dpy, win, to_x, to_y);
 413
 414     XSync(dpy, 0);
 415     /* compress expose events */
 416     eatExpose();
 417 }
 418
 419
 420 char*
 421 ShrinkString(WMFont *font, char *string, int width)
 422 {
 423     int w, w1=0;
 424     int p;
 425     char *pos;
 426     char *text;
 427     int p1, p2, t;
 428
 429     if (wPreferences.multi_byte_text)
 430         return wstrdup(string);
 431
 432     p = strlen(string);
 433     w = WMWidthOfString(font, string, p);
 434     text = wmalloc(strlen(string)+8);
 435     strcpy(text, string);
 436     if (w<=width)
 437       return text;
 438
 439     pos = strchr(text, ' ');
 440     if (!pos)
 441       pos = strchr(text, ':');
 442
 443     if (pos) {
 444         *pos = 0;
 445         p = strlen(text);
 446         w1 = WMWidthOfString(font, text, p);
 447         if (w1 > width) {
 448             w1 = 0;
 449             p = 0;
 450             *pos = ' ';
 451             *text = 0;
 452         } else {
 453             *pos = 0;
 454             width -= w1;
 455             p++;
 456         }
 457         string += p;
 458         p=strlen(string);
 459     } else {
 460         *text=0;
 461     }
 462     strcat(text, "...");
 463     width -= WMWidthOfString(font, "...", 3);
 464
 465     pos = string;
 466     p1=0;
 467     p2=p;
 468     t = (p2-p1)/2;
 469     while (p2>p1 && p1!=t) {
 470         w = WMWidthOfString(font, &string[p-t], t);
 471         if (w>width) {
 472             p2 = t;
 473             t = p1+(p2-p1)/2;
 474         } else if (w<width) {
 475             p1 = t;
 476             t = p1+(p2-p1)/2;
 477         } else
 478           p2=p1=t;
 479     }
 480     strcat(text, &string[p-p1]);
 481
 482     return text;
 483 }
 484
 485
 486 char*
 487 FindImage(char *paths, char *file)
 488 {
 489     char *tmp, *path;
 490
 491     tmp = strrchr(file, ':');
 492     if (tmp) {
 493         *tmp = 0;
 494         path = wfindfile(paths, file);
 495         *tmp = ':';
 496     }
 497     if (!tmp || !path) {
 498         path = wfindfile(paths, file);
 499     }
 500
 501     return path;
 502 }
 503
 504
 505 char*
 506 FlattenStringList(char **list, int count)
 507 {
 508     int i, j;
 509     char *flat_string, *wspace;
 510
 511     j = 0;
 512     for (i=0; i<count; i++) {
 513         if (list[i]!=NULL && list[i][0]!=0) {
 514             j += strlen(list[i]);
 515             if (strpbrk(list[i], " \t"))
 516                 j += 2;
 517         }
 518     }
 519
 520     flat_string = malloc(j+count+1);
 521     if (!flat_string) {
 522         return NULL;
 523     }
 524
 525     *flat_string = 0;
 526     for (i=0; i<count; i++) {
 527         if (list[i]!=NULL && list[i][0]!=0) {
 528             if (i>0)
 529                 strcat(flat_string, " ");
 530             wspace = strpbrk(list[i], " \t");
 531             if (wspace)
 532                 strcat(flat_string, "\"");
 533             strcat(flat_string, list[i]);
 534             if (wspace)
 535                 strcat(flat_string, "\"");
 536         }
 537     }
 538
 539     return flat_string;
 540 }
 541
 542
 543
 544 /*
 545  *----------------------------------------------------------------------
 546  * ParseCommand --
 547  *      Divides a command line into a argv/argc pair.
 548  *----------------------------------------------------------------------
 549  */
 550 #define PRC_ALPHA       0
 551 #define PRC_BLANK       1
 552 #define PRC_ESCAPE      2
 553 #define PRC_DQUOTE      3
 554 #define PRC_EOS         4
 555 #define PRC_SQUOTE      5
 556
 557 typedef struct {
 558     short nstate;
 559     short output;
 560 } DFA;
 561
 562
 563 static DFA mtable[9][6] = {
 564     {{3,1},{0,0},{4,0},{1,0},{8,0},{6,0}},
 565     {{1,1},{1,1},{2,0},{3,0},{5,0},{1,1}},
 566     {{1,1},{1,1},{1,1},{1,1},{5,0},{1,1}},
 567     {{3,1},{5,0},{4,0},{1,0},{5,0},{6,0}},
 568     {{3,1},{3,1},{3,1},{3,1},{5,0},{3,1}},
 569     {{-1,-1},{0,0},{0,0},{0,0},{0,0},{0,0}}, /* final state */
 570     {{6,1},{6,1},{7,0},{6,1},{5,0},{3,0}},
 571     {{6,1},{6,1},{6,1},{6,1},{5,0},{6,1}},
 572     {{-1,-1},{0,0},{0,0},{0,0},{0,0},{0,0}}, /* final state */
 573 };
 574
 575 char*
 576 next_token(char *word, char **next)
 577 {
 578     char *ptr;
 579     char *ret, *t;
 580     int state, ctype;
 581
 582     t = ret = wmalloc(strlen(word)+1);
 583     ptr = word;
 584
 585     state = 0;
 586     *t = 0;
 587     while (1) {
 588         if (*ptr==0)
 589             ctype = PRC_EOS;
 590         else if (*ptr=='\\')
 591             ctype = PRC_ESCAPE;
 592         else if (*ptr=='"')
 593             ctype = PRC_DQUOTE;
 594         else if (*ptr=='\'')
 595             ctype = PRC_SQUOTE;
 596         else if (*ptr==' ' || *ptr=='\t')
 597             ctype = PRC_BLANK;
 598         else
 599             ctype = PRC_ALPHA;
 600
 601         if (mtable[state][ctype].output) {
 602             *t = *ptr; t++;
 603             *t = 0;
 604         }
 605         state = mtable[state][ctype].nstate;
 606         ptr++;
 607         if (mtable[state][0].output<0) {
 608             break;
 609         }
 610     }
 611
 612     if (*ret==0)
 613         t = NULL;
 614     else
 615         t = wstrdup(ret);
 616
 617     free(ret);
 618
 619     if (ctype==PRC_EOS)
 620         *next = NULL;
 621     else
 622         *next = ptr;
 623
 624     return t;
 625 }
 626
 627
 628 void
 629 ParseCommand(char *command, char ***argv, int *argc)
 630 {
 631     WMBag *bag = WMCreateBag(4);
 632     char *token, *line;
 633     int count, j;
 634
 635     line = command;
 636     do {
 637         token = next_token(line, &line);
 638         if (token) {
 639             WMPutInBag(bag, token);
 640         }
 641     } while (token!=NULL && line!=NULL);
 642
 643     count = WMGetBagItemCount(bag);
 644     *argv = wmalloc(sizeof(char*)*count);
 645     for (j = 0; j < count; j++) {
 646         (*argv)[j] = WMGetFromBag(bag, j);
 647     }
 648     *argc = count;
 649
 650     WMFreeBag(bag);
 651 }
 652
 653
 654 static void
 655 timeoutHandler(void *data)
 656 {
 657     *(int*)data = 1;
 658 }
 659
 660
 661 static char*
 662 getTextSelection(WScreen *screen, Atom selection)
 663 {
 664     int buffer = -1;
 665
 666     switch (selection) {
 667      case XA_CUT_BUFFER0:
 668         buffer = 0;
 669         break;
 670      case XA_CUT_BUFFER1:
 671         buffer = 1;
 672         break;
 673      case XA_CUT_BUFFER2:
 674         buffer = 2;
 675         break;
 676      case XA_CUT_BUFFER3:
 677         buffer = 3;
 678         break;
 679      case XA_CUT_BUFFER4:
 680         buffer = 4;
 681         break;
 682      case XA_CUT_BUFFER5:
 683         buffer = 5;
 684         break;
 685      case XA_CUT_BUFFER6:
 686         buffer = 6;
 687         break;
 688      case XA_CUT_BUFFER7:
 689         buffer = 7;
 690         break;
 691     }
 692     if (buffer >= 0) {
 693         char *data;
 694         int size;
 695
 696         data = XFetchBuffer(dpy, &size, buffer);
 697
 698         return data;
 699     } else {
 700         char *data;
 701         int bits;
 702         Atom rtype;
 703         unsigned long len, bytes;
 704         WMHandlerID timer;
 705         int timeout = 0;
 706         XEvent ev;
 707         static Atom clipboard = 0;
 708
 709         if (!clipboard)
 710             clipboard = XInternAtom(dpy, "CLIPBOARD", False);
 711
 712         XDeleteProperty(dpy, screen->info_window, clipboard);
 713
 714         XConvertSelection(dpy, selection, XA_STRING,
 715                           clipboard, screen->info_window,
 716                           CurrentTime);
 717
 718         timer = WMAddTimerHandler(1000, timeoutHandler, &timeout);
 719
 720         while (!XCheckTypedWindowEvent(dpy, screen->info_window,
 721                                        SelectionNotify, &ev) && !timeout);
 722
 723         if (!timeout) {
 724             WMDeleteTimerHandler(timer);
 725         } else {
 726             wwarning("selection retrieval timed out");
 727             return NULL;
 728         }
 729
 730         /* nobody owns the selection or the current owner has
 731          * nothing to do with what we need */
 732         if (ev.xselection.property == None) {
 733             return NULL;
 734         }
 735
 736         if (XGetWindowProperty(dpy, screen->info_window,
 737                                clipboard, 0, 1024,
 738                                False, XA_STRING, &rtype, &bits, &len,
 739                                &bytes, (unsigned char**)&data)!=Success) {
 740             return NULL;
 741         }
 742         if (rtype!=XA_STRING || bits!=8) {
 743             wwarning("invalid data in text selection");
 744             if (data)
 745                 XFree(data);
 746             return NULL;
 747         }
 748         return data;
 749     }
 750 }
 751
 752 static char*
 753 getselection(WScreen *scr)
 754 {
 755     char *tmp;
 756
 757     tmp = getTextSelection(scr, XA_PRIMARY);
 758     if (!tmp)
 759         tmp = getTextSelection(scr, XA_CUT_BUFFER0);
 760     return tmp;
 761 }
 762
 763
 764 static char*
 765 getuserinput(WScreen *scr, char *line, int *ptr)
 766 {
 767     char *ret;
 768     char *title;
 769     char *prompt;
 770     int j, state;
 771     int begin = 0;
 772     char tbuffer[256], pbuffer[256];
 773
 774     title = _("Program Arguments");
 775     prompt = _("Enter command arguments:");
 776     ret = NULL;
 777
 778 #define _STARTING 0
 779 #define _TITLE 1
 780 #define _PROMPT 2
 781 #define _DONE 3
 782
 783     state = _STARTING;
 784     j = 0;
 785     for (; line[*ptr]!=0 && state!=_DONE; (*ptr)++) {
 786         switch (state) {
 787          case _STARTING:
 788             if (line[*ptr]=='(') {
 789                 state = _TITLE;
 790                 begin = *ptr+1;
 791             } else {
 792                 state = _DONE;
 793             }
 794             break;
 795
 796          case _TITLE:
 797             if (j <= 0 && line[*ptr]==',') {
 798
 799                 j = 0;
 800                 if (*ptr > begin) {
 801                     strncpy(tbuffer, &line[begin], WMIN(*ptr-begin, 255));
 802                     tbuffer[WMIN(*ptr-begin, 255)] = 0;
 803                     title = (char*)tbuffer;
 804                 }
 805                 begin = *ptr+1;
 806                 state = _PROMPT;
 807
 808             } else if (j <= 0 && line[*ptr]==')') {
 809
 810                 if (*ptr > begin) {
 811                     strncpy(tbuffer, &line[begin], WMIN(*ptr-begin, 255));
 812                     tbuffer[WMIN(*ptr-begin, 255)] = 0;
 813                     title = (char*)tbuffer;
 814                 }
 815                 state = _DONE;
 816
 817             } else if (line[*ptr]=='(') {
 818                 j++;
 819             } else if (line[*ptr]==')') {
 820                 j--;
 821             }
 822
 823             break;
 824
 825          case _PROMPT:
 826             if (line[*ptr]==')' && j==0) {
 827
 828                 if (*ptr-begin > 1) {
 829                     strncpy(pbuffer, &line[begin], WMIN(*ptr-begin, 255));
 830                     pbuffer[WMIN(*ptr-begin, 255)] = 0;
 831                     prompt = (char*)pbuffer;
 832                 }
 833                 state = _DONE;
 834             } else if (line[*ptr]=='(')
 835                     j++;
 836             else if (line[*ptr]==')')
 837                 j--;
 838             break;
 839         }
 840     }
 841     (*ptr)--;
 842 #undef _STARTING
 843 #undef _TITLE
 844 #undef _PROMPT
 845 #undef _DONE
 846
 847     if (!wInputDialog(scr, title, prompt, &ret))
 848         return NULL;
 849     else
 850         return ret;
 851 }
 852
 853
 854 #ifdef OFFIX_DND
 855 static char*
 856 get_dnd_selection(WScreen *scr)
 857 {
 858     XTextProperty text_ret;
 859     int result;
 860     char **list;
 861     char *flat_string;
 862     int count;
 863
 864     result=XGetTextProperty(dpy, scr->root_win, &text_ret, _XA_DND_SELECTION);
 865
 866     if (result==0 || text_ret.value==NULL || text_ret.encoding==None
 867         || text_ret.format==0 || text_ret.nitems == 0) {
 868         wwarning(_("unable to get dropped data from DND drop"));
 869         return NULL;
 870     }
 871
 872     XTextPropertyToStringList(&text_ret, &list, &count);
 873
 874     if (!list || count<1) {
 875         XFree(text_ret.value);
 876         wwarning(_("error getting dropped data from DND drop"));
 877         return NULL;
 878     }
 879
 880     flat_string = FlattenStringList(list, count);
 881     if (!flat_string) {
 882         wwarning(_("out of memory while getting data from DND drop"));
 883     }
 884
 885     XFreeStringList(list);
 886     XFree(text_ret.value);
 887     return flat_string;
 888 }
 889 #endif /* OFFIX_DND */
 890
 891
 892 #define S_NORMAL 0
 893 #define S_ESCAPE 1
 894 #define S_OPTION 2
 895
 896 /*
 897  * state        input   new-state       output
 898  * NORMAL       %       OPTION          <nil>
 899  * NORMAL       \       ESCAPE          <nil>
 900  * NORMAL       etc.    NORMAL          <input>
 901  * ESCAPE       any     NORMAL          <input>
 902  * OPTION       s       NORMAL          <selection buffer>
 903  * OPTION       w       NORMAL          <selected window id>
 904  * OPTION       a       NORMAL          <input text>
 905  * OPTION       d       NORMAL          <OffiX DND selection object>
 906  * OPTION       W       NORMAL          <current workspace>
 907  * OPTION       etc.    NORMAL          %<input>
 908  */
 909 #define TMPBUFSIZE 64
 910 char*
 911 ExpandOptions(WScreen *scr, char *cmdline)
 912 {
 913     int ptr, optr, state, len, olen;
 914     char *out, *nout;
 915     char *selection=NULL;
 916     char *user_input=NULL;
 917 #if defined(OFFIX_DND) || defined(XDND)
 918     char *dropped_thing=NULL;
 919 #endif
 920     char tmpbuf[TMPBUFSIZE];
 921     int slen;
 922
 923     len = strlen(cmdline);
 924     olen = len+1;
 925     out = malloc(olen);
 926     if (!out) {
 927         wwarning(_("out of memory during expansion of \"%s\""));
 928         return NULL;
 929     }
 930     *out = 0;
 931     ptr = 0;                           /* input line pointer */
 932     optr = 0;                          /* output line pointer */
 933     state = S_NORMAL;
 934     while (ptr < len) {
 935         switch (state) {
 936          case S_NORMAL:
 937             switch (cmdline[ptr]) {
 938              case '\\':
 939                 state = S_ESCAPE;
 940                 break;
 941              case '%':
 942                 state = S_OPTION;
 943                 break;
 944              default:
 945                 state = S_NORMAL;
 946                 out[optr++]=cmdline[ptr];
 947                 break;
 948             }
 949             break;
 950          case S_ESCAPE:
 951             switch (cmdline[ptr]) {
 952              case 'n':
 953                 out[optr++]=10;
 954                 break;
 955
 956              case 'r':
 957                 out[optr++]=13;
 958                 break;
 959
 960              case 't':
 961                 out[optr++]=9;
 962                 break;
 963
 964              default:
 965                 out[optr++]=cmdline[ptr];
 966             }
 967             state = S_NORMAL;
 968             break;
 969          case S_OPTION:
 970             state = S_NORMAL;
 971             switch (cmdline[ptr]) {
 972              case 'w':
 973                 if (scr->focused_window
 974                     && scr->focused_window->flags.focused) {
 975                     sprintf(tmpbuf, "0x%x",
 976                             (unsigned int)scr->focused_window->client_win);
 977                     slen = strlen(tmpbuf);
 978                     olen += slen;
 979                     nout = realloc(out,olen);
 980                     if (!nout) {
 981                         wwarning(_("out of memory during expansion of \"%w\""));
 982                         goto error;
 983                     }
 984                     out = nout;
 985                     strcat(out,tmpbuf);
 986                     optr+=slen;
 987                 } else {
 988                     out[optr++]=' ';
 989                 }
 990                 break;
 991
 992              case 'W':
 993                 sprintf(tmpbuf, "0x%x",
 994                         (unsigned int)scr->current_workspace + 1);
 995                 slen = strlen(tmpbuf);
 996                 olen += slen;
 997                 nout = realloc(out,olen);
 998                 if (!nout) {
 999                     wwarning(_("out of memory during expansion of \"%W\""));
1000                     goto error;
1001                 }
1002                 out = nout;
1003                 strcat(out,tmpbuf);
1004                 optr+=slen;
1005                 break;
1006
1007              case 'a':
1008                 ptr++;
1009                 user_input = getuserinput(scr, cmdline, &ptr);
1010                 if (user_input) {
1011                     slen = strlen(user_input);
1012                     olen += slen;
1013                     nout = realloc(out,olen);
1014                     if (!nout) {
1015                         wwarning(_("out of memory during expansion of \"%a\""));
1016                         goto error;
1017                     }
1018                     out = nout;
1019                     strcat(out,user_input);
1020                     optr+=slen;
1021                 } else {
1022                     /* Not an error, but user has Canceled the dialog box.
1023                      * This will make the command to not be performed. */
1024                     goto error;
1025                 }
1026                 break;
1027
1028 #if defined(OFFIX_DND) || defined(XDND)
1029              case 'd':
1030 #ifdef XDND
1031                 if(scr->xdestring) {
1032                     dropped_thing = wstrdup(scr->xdestring);
1033                 }
1034 #endif
1035                 if (!dropped_thing) {
1036                     dropped_thing = get_dnd_selection(scr);
1037                 }
1038                 if (!dropped_thing) {
1039                     scr->flags.dnd_data_convertion_status = 1;
1040                     goto error;
1041                 }
1042                 slen = strlen(dropped_thing);
1043                 olen += slen;
1044                 nout = realloc(out,olen);
1045                 if (!nout) {
1046                     wwarning(_("out of memory during expansion of \"%d\""));
1047                     goto error;
1048                 }
1049                 out = nout;
1050                 strcat(out,dropped_thing);
1051                 optr+=slen;
1052                 break;
1053 #endif /* OFFIX_DND */
1054
1055              case 's':
1056                 if (!selection) {
1057                     selection = getselection(scr);
1058                 }
1059                 if (!selection) {
1060                     wwarning(_("selection not available"));
1061                     goto error;
1062                 }
1063                 slen = strlen(selection);
1064                 olen += slen;
1065                 nout = realloc(out,olen);
1066                 if (!nout) {
1067                     wwarning(_("out of memory during expansion of \"%s\""));
1068                     goto error;
1069                 }
1070                 out = nout;
1071                 strcat(out,selection);
1072                 optr+=slen;
1073                 break;
1074
1075              default:
1076                 out[optr++]='%';
1077                 out[optr++]=cmdline[ptr];
1078             }
1079             break;
1080         }
1081         out[optr]=0;
1082         ptr++;
1083     }
1084     if (selection)
1085       XFree(selection);
1086     return out;
1087
1088     error:
1089     free(out);
1090     if (selection)
1091       XFree(selection);
1092     return NULL;
1093 }
1094
1095
1096 /* We don't care for upper/lower case in comparing the keys; so we
1097    have to define our own comparison function here */
1098 BOOL
1099 StringCompareHook(proplist_t pl1, proplist_t pl2)
1100 {
1101     char *str1, *str2;
1102
1103     str1 = PLGetString(pl1);
1104     str2 = PLGetString(pl2);
1105
1106     if (strcasecmp(str1, str2)==0)
1107       return YES;
1108     else
1109       return NO;
1110 }
1111
1112
1113 /* feof doesn't seem to work on pipes */
1114 int
1115 IsEof(FILE * stream)
1116 {
1117     static struct stat stinfo;
1118
1119     fstat(fileno(stream), &stinfo);
1120     return ((S_ISFIFO(stinfo.st_dev) && stinfo.st_size == 0) ||
1121             feof(stream));
1122 }
1123
1124
1125 void
1126 ParseWindowName(proplist_t value, char **winstance, char **wclass, char *where)
1127 {
1128     char *name;
1129
1130     *winstance = *wclass = NULL;
1131
1132     if (!PLIsString(value)) {
1133         wwarning(_("bad window name value in %s state info"), where);
1134         return;
1135     }
1136
1137     name = PLGetString(value);
1138     if (!name || strlen(name)==0) {
1139         wwarning(_("bad window name value in %s state info"), where);
1140         return;
1141     }
1142
1143     UnescapeWM_CLASS(name, winstance, wclass);
1144 }
1145
1146
1147 #if 0
1148 static char*
1149 keysymToString(KeySym keysym, unsigned int state)
1150 {
1151     XKeyEvent kev;
1152     char *buf = wmalloc(20);
1153     int count;
1154
1155     kev.display = dpy;
1156     kev.type = KeyPress;
1157     kev.send_event = False;
1158     kev.window = DefaultRootWindow(dpy);
1159     kev.root = DefaultRootWindow(dpy);
1160     kev.same_screen = True;
1161     kev.subwindow = kev.root;
1162     kev.serial = 0x12344321;
1163     kev.time = CurrentTime;
1164     kev.state = state;
1165     kev.keycode = XKeysymToKeycode(dpy, keysym);
1166     count = XLookupString(&kev, buf, 19, NULL, NULL);
1167     buf[count] = 0;
1168
1169     return buf;
1170 }
1171 #endif
1172
1173 static char *
1174 appendrealloc(char *a, char *b)
1175 {
1176     if (a == NULL)
1177         return wstrdup(b);
1178     else {
1179         char *c = wstrappend(a, b);
1180         free(a);
1181         return c;
1182     }
1183 }
1184
1185
1186 char*
1187 GetShortcutString(char *text)
1188 {
1189     char *buffer = NULL;
1190     char *k;
1191     int modmask = 0;
1192 /*    KeySym ksym;*/
1193     int control = 0;
1194     char *tmp;
1195
1196     tmp = text = wstrdup(text);
1197
1198     /* get modifiers */
1199     while ((k = strchr(text, '+'))!=NULL) {
1200         int mod;
1201
1202         *k = 0;
1203         mod = wXModifierFromKey(text);
1204         if (mod<0) {
1205             return wstrdup("bug");
1206         }
1207
1208         modmask |= mod;
1209
1210         if (strcasecmp(text, "Meta")==0) {
1211             buffer = appendrealloc(buffer, "M+");
1212         } else if (strcasecmp(text, "Alt")==0) {
1213             buffer = appendrealloc(buffer, "A+");
1214         } else if (strcasecmp(text, "Shift")==0) {
1215             buffer = appendrealloc(buffer, "Sh+");
1216         } else if (strcasecmp(text, "Mod1")==0) {
1217             buffer = appendrealloc(buffer, "M1+");
1218         } else if (strcasecmp(text, "Mod2")==0) {
1219             buffer = appendrealloc(buffer, "M2+");
1220         } else if (strcasecmp(text, "Mod3")==0) {
1221             buffer = appendrealloc(buffer, "M3+");
1222         } else if (strcasecmp(text, "Mod4")==0) {
1223             buffer = appendrealloc(buffer, "M4+");
1224         } else if (strcasecmp(text, "Mod5")==0) {
1225             buffer = appendrealloc(buffer, "M5+");
1226         } else if (strcasecmp(text, "Control")==0) {
1227             control = 1;
1228         } else {
1229             buffer = appendrealloc(buffer, text);
1230         }
1231         text = k+1;
1232     }
1233
1234     if (control) {
1235         buffer = appendrealloc(buffer, "^");
1236     }
1237     buffer = appendrealloc(buffer, text);
1238
1239     /* get key */
1240 /*    ksym = XStringToKeysym(text);
1241     tmp = keysymToString(ksym, modmask);
1242     puts(tmp);
1243     buffer = wstrappend(buffer, tmp);
1244 */
1245     free(tmp);
1246
1247     return buffer;
1248 }
1249
1250
1251 char*
1252 EscapeWM_CLASS(char *name, char *class)
1253 {
1254     char *ret;
1255     char *ename = NULL, *eclass = NULL;
1256     int i, j, l;
1257
1258     if (!name && !class)
1259         return NULL;
1260
1261     if (name) {
1262         l = strlen(name);
1263         ename = wmalloc(l*2);
1264         j = 0;
1265         for (i=0; i<l; i++) {
1266             if (name[i]=='\\') {
1267                 ename[j++] = '\\';
1268             } else if (name[i]=='.') {
1269                 ename[j++] = '\\';
1270             }
1271             ename[j++] = name[i];
1272         }
1273         ename[j] = 0;
1274     }
1275     if (class) {
1276         l = strlen(class);
1277         eclass = wmalloc(l*2);
1278         j = 0;
1279         for (i=0; i<l; i++) {
1280             if (class[i]=='\\') {
1281                 eclass[j++] = '\\';
1282             } else if (class[i]=='.') {
1283                 eclass[j++] = '\\';
1284             }
1285             eclass[j++] = class[i];
1286         }
1287         eclass[j] = 0;
1288     }
1289
1290     if (ename && eclass) {
1291         ret = wmalloc(strlen(ename)+strlen(eclass)+4);
1292         sprintf(ret, "%s.%s", ename, eclass);
1293         free(ename);
1294         free(eclass);
1295     } else if (ename) {
1296         ret = wstrdup(ename);
1297         free(ename);
1298     } else {
1299         ret = wstrdup(eclass);
1300         free(eclass);
1301     }
1302
1303     return ret;
1304 }
1305
1306
1307 void
1308 UnescapeWM_CLASS(char *str, char **name, char **class)
1309 {
1310     int i, j, k, dot;
1311     Bool esc;
1312
1313     j = strlen(str);
1314     *name = wmalloc(j);
1315     **name = 0;
1316     *class = wmalloc(j);
1317     **class = 0;
1318
1319     /* separate string in 2 parts */
1320     esc = False;
1321     dot = 0;
1322     for (i = 0; i < j; i++) {
1323         if (!esc) {
1324             if (str[i]=='\\') {
1325                 esc = True;
1326             } else if (str[i]=='.') {
1327                 dot = i;
1328                 break;
1329             }
1330         } else {
1331             esc = False;
1332         }
1333     }
1334
1335     /* unescape strings */
1336     esc = False;
1337     k = 0;
1338     for (i = 0; i < dot; i++) {
1339         if (!esc) {
1340             if (str[i]=='\\') {
1341                 esc = True;
1342             } else {
1343                 (*name)[k++] = str[i];
1344             }
1345         } else {
1346             (*name)[k++] = str[i];
1347             esc = False;
1348         }
1349     }
1350     (*name)[k] = 0;
1351
1352     esc = False;
1353     k = 0;
1354     for (i = dot+1; i<j; i++) {
1355         if (!esc) {
1356             if (str[i]=='\\') {
1357                 esc = True;
1358             } else {
1359                 (*class)[k++] = str[i];
1360             }
1361         } else {
1362             esc = False;
1363         }
1364     }
1365     (*class)[k] = 0;
1366
1367     if (!*name) {
1368         free(*name);
1369         *name = NULL;
1370     }
1371     if (!*class) {
1372         free(*class);
1373         *class = NULL;
1374     }
1375 }
1376
1377
1378
1379 void
1380 SendHelperMessage(WScreen *scr, char type, int workspace, char *msg)
1381 {
1382     unsigned char *buffer;
1383     int len;
1384     int i;
1385     char buf[16];
1386
1387     if (!scr->flags.backimage_helper_launched) {
1388         return;
1389     }
1390
1391     len = (msg ? strlen(msg) : 0) + (workspace >=0 ? 4 : 0) + 1 ;
1392     buffer = wmalloc(len+5);
1393     sprintf(buf, "%4i", len);
1394     memcpy(buffer, buf, 4);
1395     buffer[4] = type;
1396     i = 5;
1397     if (workspace >= 0) {
1398         sprintf(buf, "%4i", workspace);
1399         memcpy(&buffer[i], buf, 4);
1400         i += 4;
1401         buffer[i] = 0;
1402     }
1403     if (msg)
1404         strcpy(&buffer[i], msg);
1405
1406     if (write(scr->helper_fd, buffer, len+4) < 0) {
1407         wsyserror(_("could not send message to background image helper"));
1408     }
1409     free(buffer);
1410 }