git.marmaro.de Git - mmh/blob - uip/folder.c

   1 /*
   2 ** folder(s).c -- set/list the current message and/or folder
   3 **             -- push/pop a folder onto/from the folder stack
   4 **             -- list the folder stack
   5 **
   6 ** This code is Copyright (c) 2002, 2008, by the authors of nmh.  See the
   7 ** COPYRIGHT file in the root directory of the nmh distribution for
   8 ** complete copyright information.
   9 */
  10
  11 #include <h/mh.h>
  12 #include <h/crawl_folders.h>
  13 #include <h/utils.h>
  14 #include <errno.h>
  15
  16 static struct swit switches[] = {
  17 #define ALLSW  0
  18         { "all", 0 },
  19 #define NALLSW  1
  20         { "noall", 0 },
  21 #define CREATSW  2
  22         { "create", 0 },
  23 #define NCREATSW  3
  24         { "nocreate", 0 },
  25 #define FASTSW  4
  26         { "fast", 0 },
  27 #define NFASTSW  5
  28         { "nofast", 0 },
  29 #define HDRSW  6
  30         { "header", 0 },
  31 #define NHDRSW  7
  32         { "noheader", 0 },
  33 #define PACKSW  8
  34         { "pack", 0 },
  35 #define NPACKSW  9
  36         { "nopack", 0 },
  37 #define VERBSW  10
  38         { "verbose", 0 },
  39 #define NVERBSW  11
  40         { "noverbose", 0 },
  41 #define RECURSW  12
  42         { "recurse", 0 },
  43 #define NRECRSW  13
  44         { "norecurse", 0 },
  45 #define TOTALSW  14
  46         { "total", 0 },
  47 #define NTOTLSW  15
  48         { "nototal", 0 },
  49 #define LISTSW  16
  50         { "list", 0 },
  51 #define NLISTSW  17
  52         { "nolist", 0 },
  53 #define PRNTSW  18
  54         { "print", 0 },
  55 #define NPRNTSW  19
  56         { "noprint", -4 },
  57 #define PUSHSW  20
  58         { "push", 0 },
  59 #define POPSW  21
  60         { "pop", 0 },
  61 #define VERSIONSW  22
  62         { "version", 0 },
  63 #define HELPSW  23
  64         { "help", 0 },
  65         { NULL, 0 }
  66 };
  67
  68 static int fshort   = 0;  /* output only folder names */
  69 static int fcreat   = 0;  /* should we ask to create new folders? */
  70 static int fpack    = 0;  /* are we packing the folder? */
  71 static int fverb    = 0;  /* print actions taken while packing folder */
  72 static int fheader  = 0;  /* should we output a header? */
  73 static int frecurse = 0;  /* recurse through subfolders */
  74 static int ftotal   = 0;  /* should we output the totals? */
  75 static int all      = 0;  /* should we output all folders */
  76
  77 static int total_folders = 0;  /* total number of folders */
  78
  79 static char *nmhdir;
  80 static char *stack = "Folder-Stack";
  81 static char folder[BUFSIZ];
  82
  83 /*
  84 ** Structure to hold information about
  85 ** folders as we scan them.
  86 */
  87 struct FolderInfo {
  88         char *name;
  89         int nummsg;
  90         int curmsg;
  91         int lowmsg;
  92         int hghmsg;
  93         int others;  /* others == 1 if other files in folder */
  94         int error;  /* error == 1 for unreadable folder */
  95 };
  96
  97 /*
  98 ** Dynamically allocated space to hold
  99 ** all the folder information.
 100 */
 101 static struct FolderInfo *fi;
 102 static int maxFolderInfo;
 103
 104 /*
 105 ** static prototypes
 106 */
 107 static int get_folder_info(char *, char *);
 108 static crawl_callback_t get_folder_info_callback;
 109 static void print_folders(void);
 110 static int sfold(struct msgs *, char *);
 111 static void readonly_folders(void);
 112
 113
 114 int
 115 main(int argc, char **argv)
 116 {
 117         int printsw = 0, listsw = 0;
 118         int pushsw = 0, popsw = 0;
 119         char *cp, *dp, *msg = NULL, *argfolder = NULL;
 120         char **ap, **argp, buf[BUFSIZ], **arguments;
 121
 122 #ifdef LOCALE
 123         setlocale(LC_ALL, "");
 124 #endif
 125         invo_name = mhbasename(argv[0]);
 126
 127         /* read user profile/context */
 128         context_read();
 129
 130         /*
 131         ** If program was invoked with name ending
 132         ** in `s', then add switch `-all'.
 133         */
 134         if (argv[0][strlen(argv[0]) - 1] == 's')
 135                 all = 1;
 136
 137         arguments = getarguments(invo_name, argc, argv, 1);
 138         argp = arguments;
 139
 140         while ((cp = *argp++)) {
 141                 if (*cp == '-') {
 142                         switch (smatch(++cp, switches)) {
 143                         case AMBIGSW:
 144                                 ambigsw(cp, switches);
 145                                 done(1);
 146                         case UNKWNSW:
 147                                 adios(NULL, "-%s unknown", cp);
 148
 149                         case HELPSW:
 150                                 snprintf(buf, sizeof(buf), "%s [+folder] [msg] [switches]", invo_name);
 151                                 print_help(buf, switches, 1);
 152                                 done(1);
 153                         case VERSIONSW:
 154                                 print_version(invo_name);
 155                                 done(1);
 156
 157                         case ALLSW:
 158                                 all = 1;
 159                                 continue;
 160
 161                         case NALLSW:
 162                                 all = 0;
 163                                 continue;
 164
 165                         case CREATSW:
 166                                 fcreat = 1;
 167                                 continue;
 168                         case NCREATSW:
 169                                 fcreat = -1;
 170                                 continue;
 171
 172                         case FASTSW:
 173                                 fshort++;
 174                                 continue;
 175                         case NFASTSW:
 176                                 fshort = 0;
 177                                 continue;
 178
 179                         case HDRSW:
 180                                 fheader = 1;
 181                                 continue;
 182                         case NHDRSW:
 183                                 fheader = -1;
 184                                 continue;
 185
 186                         case PACKSW:
 187                                 fpack++;
 188                                 continue;
 189                         case NPACKSW:
 190                                 fpack = 0;
 191                                 continue;
 192
 193                         case VERBSW:
 194                                 fverb++;
 195                                 continue;
 196                         case NVERBSW:
 197                                 fverb = 0;
 198                                 continue;
 199
 200                         case RECURSW:
 201                                 frecurse++;
 202                                 continue;
 203                         case NRECRSW:
 204                                 frecurse = 0;
 205                                 continue;
 206
 207                         case TOTALSW:
 208                                 ftotal = 1;
 209                                 continue;
 210                         case NTOTLSW:
 211                                 ftotal = -1;
 212                                 continue;
 213
 214                         case PRNTSW:
 215                                 printsw = 1;
 216                                 continue;
 217                         case NPRNTSW:
 218                                 printsw = 0;
 219                                 continue;
 220
 221                         case LISTSW:
 222                                 listsw = 1;
 223                                 continue;
 224                         case NLISTSW:
 225                                 listsw = 0;
 226                                 continue;
 227
 228                         case PUSHSW:
 229                                 pushsw = 1;
 230                                 listsw = 1;
 231                                 popsw  = 0;
 232                                 continue;
 233                         case POPSW:
 234                                 popsw  = 1;
 235                                 listsw = 1;
 236                                 pushsw = 0;
 237                                 continue;
 238                         }
 239                 }
 240                 if (*cp == '+' || *cp == '@') {
 241                         if (argfolder)
 242                                 adios(NULL, "only one folder at a time!");
 243                         else
 244                                 argfolder = getcpy(expandfol(cp));
 245                 } else {
 246                         if (msg)
 247                                 adios(NULL, "only one (current) message at a time!");
 248                         else
 249                                 msg = cp;
 250                 }
 251         }
 252
 253         nmhdir = concat(toabsdir("+"), "/", NULL);
 254
 255         /*
 256         ** If we aren't working with the folder stack
 257         ** (-push, -pop, -list) then the default is to print.
 258         */
 259         if (pushsw == 0 && popsw == 0 && listsw == 0)
 260                 printsw++;
 261
 262         /* Pushing a folder onto the folder stack */
 263         if (pushsw) {
 264                 if (!argfolder) {
 265                         /* If no folder is given, the current folder and */
 266                         /* the top of the folder stack are swapped. */
 267                         if ((cp = context_find(stack))) {
 268                                 dp = getcpy(cp);
 269                                 ap = brkstring(dp, " ", "\n");
 270                                 argfolder = getcpy(*ap++);
 271                         } else {
 272                                 adios(NULL, "no other folder");
 273                         }
 274                         for (cp = getcpy(getcurfol()); *ap; ap++)
 275                                 cp = add(*ap, add(" ", cp));
 276                         free(dp);
 277                         context_replace(stack, cp);  /* update folder stack */
 278                 } else {
 279                         /* update folder stack */
 280                         context_replace(stack, (cp = context_find (stack)) ?
 281                                         concat(getcurfol(), " ", cp, NULL) :
 282                                         getcpy(getcurfol()));
 283                 }
 284         }
 285
 286         /* Popping a folder off of the folder stack */
 287         if (popsw) {
 288                 if (argfolder)
 289                         adios(NULL, "sorry, no folders allowed with -pop");
 290                 if ((cp = context_find(stack))) {
 291                         dp = getcpy(cp);
 292                         ap = brkstring(dp, " ", "\n");
 293                         argfolder = getcpy(*ap++);
 294                 } else {
 295                         adios(NULL, "folder stack empty");
 296                 }
 297                 if (*ap) {
 298                         /* if there's anything left in the stack */
 299                         cp = getcpy(*ap++);
 300                         for (; *ap; ap++)
 301                                 cp = add(*ap, add(" ", cp));
 302                         context_replace(stack, cp);  /* update folder stack */
 303                 } else {
 304                         /* delete folder stack entry from context */
 305                         context_del(stack);
 306                 }
 307                 free(dp);
 308         }
 309         if (pushsw || popsw) {
 310                 cp = toabsdir(argfolder);
 311                 if (access(cp, F_OK) == NOTOK)
 312                         adios(cp, "unable to find folder");
 313                 /* update current folder   */
 314                 context_replace(curfolder, argfolder);
 315                 context_save();  /* save the context file   */
 316                 argfolder = NULL;
 317         }
 318
 319         /* Listing the folder stack */
 320         if (listsw) {
 321                 printf("%s", argfolder ? argfolder : getcurfol());
 322                 if ((cp = context_find(stack))) {
 323                         dp = getcpy(cp);
 324                         for (ap = brkstring(dp, " ", "\n"); *ap; ap++)
 325                                 printf(" %s", *ap);
 326                         free(dp);
 327                 }
 328                 printf("\n");
 329
 330                 if (!printsw)
 331                         done(0);
 332         }
 333
 334         /* Allocate initial space to record folder information */
 335         maxFolderInfo = CRAWL_NUMFOLDERS;
 336         fi = mh_xmalloc(maxFolderInfo * sizeof(*fi));
 337
 338         /*
 339         ** Scan the folders
 340         */
 341         if (all || ftotal > 0) {
 342                 /*
 343                 ** If no folder is given, do them all
 344                 */
 345                 /*
 346                 ** change directory to base of nmh directory for
 347                 ** crawl_folders
 348                 */
 349                 if (chdir(nmhdir) == NOTOK)
 350                         adios(nmhdir, "unable to change directory to");
 351                 if (!argfolder) {
 352                         if (msg)
 353                                 admonish(NULL, "no folder given for message %s", msg);
 354                         readonly_folders(); /* do any readonly folders */
 355                         strncpy(folder, (cp = context_find(curfolder)) ?
 356                                         cp : "", sizeof(folder));
 357                         crawl_folders(".", get_folder_info_callback, NULL);
 358                 } else {
 359                         strncpy(folder, argfolder, sizeof(folder));
 360                         if (get_folder_info(argfolder, msg)) {
 361                                 /* update current folder */
 362                                 context_replace(curfolder, argfolder);
 363                                 context_save();
 364                         }
 365                         /*
 366                         ** Since recurse wasn't done in get_folder_info(),
 367                         ** we still need to list all level-1 sub-folders.
 368                         */
 369                         if (!frecurse)
 370                                 crawl_folders(folder, get_folder_info_callback,
 371                                                 NULL);
 372                 }
 373         } else {
 374                 strncpy(folder, argfolder ? argfolder : getcurfol(),
 375                                 sizeof(folder));
 376
 377                 /*
 378                 ** Check if folder exists.  If not, then see if
 379                 ** we should create it, or just exit.
 380                 */
 381                 create_folder(toabsdir(folder), fcreat, done);
 382
 383                 if (get_folder_info(folder, msg) && argfolder) {
 384                         /* update current folder */
 385                         context_replace(curfolder, argfolder);
 386                         }
 387         }
 388
 389         /*
 390         ** Print out folder information
 391         */
 392         print_folders();
 393
 394         context_save();
 395         done(0);
 396         return 1;
 397 }
 398
 399 static int
 400 get_folder_info_body(char *fold, char *msg, boolean *crawl_children)
 401 {
 402         int i, retval = 1;
 403         struct msgs *mp = NULL;
 404
 405         i = total_folders++;
 406
 407         /*
 408         ** if necessary, reallocate the space
 409         ** for folder information
 410         */
 411         if (total_folders >= maxFolderInfo) {
 412                 maxFolderInfo += CRAWL_NUMFOLDERS;
 413                 fi = mh_xrealloc(fi, maxFolderInfo * sizeof(*fi));
 414         }
 415
 416         fi[i].name   = fold;
 417         fi[i].nummsg = 0;
 418         fi[i].curmsg = 0;
 419         fi[i].lowmsg = 0;
 420         fi[i].hghmsg = 0;
 421         fi[i].others = 0;
 422         fi[i].error  = 0;
 423
 424         if ((ftotal > 0) || !fshort || msg || fpack) {
 425                 /*
 426                 ** create message structure and get folder info
 427                 */
 428                 if (!(mp = folder_read(fold))) {
 429                         admonish(NULL, "unable to read folder %s", fold);
 430                         return 0;
 431                 }
 432
 433                 /* set the current message */
 434                 if (msg && !sfold(mp, msg))
 435                         retval = 0;
 436
 437                 if (fpack) {
 438                         if (folder_pack(&mp, fverb) == -1)
 439                                 done(1);
 440                         seq_save(mp);  /* synchronize the sequences */
 441                         context_save();  /* save the context file */
 442                 }
 443
 444                 /* record info for this folder */
 445                 if ((ftotal > 0) || !fshort) {
 446                         fi[i].nummsg = mp->nummsg;
 447                         fi[i].curmsg = mp->curmsg;
 448                         fi[i].lowmsg = mp->lowmsg;
 449                         fi[i].hghmsg = mp->hghmsg;
 450                         fi[i].others = other_files(mp);
 451                 }
 452
 453                 folder_free(mp); /* free folder/message structure */
 454         }
 455
 456         *crawl_children = (frecurse && (fshort || fi[i].others)
 457                 && (fi[i].error == 0));
 458         return retval;
 459 }
 460
 461 static boolean
 462 get_folder_info_callback(char *fold, void *baton)
 463 {
 464         boolean crawl_children;
 465         get_folder_info_body(fold, NULL, &crawl_children);
 466         fflush(stdout);
 467         return crawl_children;
 468 }
 469
 470 static int
 471 get_folder_info(char *fold, char *msg)
 472 {
 473         boolean crawl_children;
 474         int retval;
 475
 476         retval = get_folder_info_body(fold, msg, &crawl_children);
 477
 478         if (crawl_children) {
 479                 crawl_folders(fold, get_folder_info_callback, NULL);
 480         }
 481 return retval;
 482 }
 483
 484 /*
 485 ** Print folder information
 486 */
 487
 488 static void
 489 print_folders(void)
 490 {
 491         int i, len, hasempty = 0, curprinted;
 492         int maxlen = 0, maxnummsg = 0, maxlowmsg = 0;
 493         int maxhghmsg = 0, maxcurmsg = 0, total_msgs = 0;
 494         int nummsgdigits, lowmsgdigits;
 495         int hghmsgdigits, curmsgdigits;
 496         char tmpname[BUFSIZ];
 497
 498         /*
 499         ** compute a few values needed to for
 500         ** printing various fields
 501         */
 502         for (i = 0; i < total_folders; i++) {
 503                 /* length of folder name */
 504                 len = strlen(fi[i].name);
 505                 if (len > maxlen)
 506                         maxlen = len;
 507
 508                 /* If folder has error, skip the rest */
 509                 if (fi[i].error)
 510                         continue;
 511
 512                 /* calculate total number of messages */
 513                 total_msgs += fi[i].nummsg;
 514
 515                 /* maximum number of messages */
 516                 if (fi[i].nummsg > maxnummsg)
 517                         maxnummsg = fi[i].nummsg;
 518
 519                 /* maximum low message */
 520                 if (fi[i].lowmsg > maxlowmsg)
 521                         maxlowmsg = fi[i].lowmsg;
 522
 523                 /* maximum high message */
 524                 if (fi[i].hghmsg > maxhghmsg)
 525                         maxhghmsg = fi[i].hghmsg;
 526
 527                 /* maximum current message */
 528                 if (fi[i].curmsg >= fi[i].lowmsg &&
 529                         fi[i].curmsg <= fi[i].hghmsg &&
 530                         fi[i].curmsg > maxcurmsg)
 531                         maxcurmsg = fi[i].curmsg;
 532
 533                 /* check for empty folders */
 534                 if (fi[i].nummsg == 0)
 535                         hasempty = 1;
 536         }
 537         nummsgdigits = num_digits(maxnummsg);
 538         lowmsgdigits = num_digits(maxlowmsg);
 539         hghmsgdigits = num_digits(maxhghmsg);
 540         curmsgdigits = num_digits(maxcurmsg);
 541
 542         if (hasempty && nummsgdigits < 2)
 543                 nummsgdigits = 2;
 544
 545         /*
 546         ** Print the header
 547         */
 548         if (fheader > 0 || (all && !fshort && fheader >= 0))
 549                 printf("%-*s %*s %-*s; %-*s %*s\n",
 550                                 maxlen+1, "FOLDER",
 551                                 nummsgdigits + 13, "# MESSAGES",
 552                                 lowmsgdigits + hghmsgdigits + 4, " RANGE",
 553                                 curmsgdigits + 4, "CUR",
 554                                 9, "(OTHERS)");
 555
 556         /*
 557         ** Print folder information
 558         */
 559         if (all || fshort || ftotal < 1) {
 560                 for (i = 0; i < total_folders; i++) {
 561                         if (fshort) {
 562                                 printf("%s\n", fi[i].name);
 563                                 continue;
 564                         }
 565
 566                         /* Add `+' to end of name, if folder is current */
 567                         if (strcmp(folder, fi[i].name))
 568                                 snprintf(tmpname, sizeof(tmpname), "%s",
 569                                                 fi[i].name);
 570                         else
 571                                 snprintf(tmpname, sizeof(tmpname), "%s+",
 572                                                 fi[i].name);
 573
 574                         if (fi[i].error) {
 575                                 printf("%-*s is unreadable\n", maxlen+1,
 576                                                 tmpname);
 577                                 continue;
 578                         }
 579
 580                         printf("%-*s ", maxlen+1, tmpname);
 581
 582                         curprinted = 0; /* remember if we print cur */
 583                         if (fi[i].nummsg == 0) {
 584                                 printf("has %*s messages%*s", nummsgdigits, "no", fi[i].others ? lowmsgdigits + hghmsgdigits + 5 : 0, "");
 585                         } else {
 586                                 printf("has %*d message%s  (%*d-%*d)",
 587                                                 nummsgdigits, fi[i].nummsg,
 588                                                 (fi[i].nummsg == 1) ?
 589                                                 " " : "s",
 590                                                 lowmsgdigits, fi[i].lowmsg,
 591                                                 hghmsgdigits, fi[i].hghmsg);
 592                                 if (fi[i].curmsg >= fi[i].lowmsg && fi[i].curmsg <= fi[i].hghmsg) {
 593                                         curprinted = 1;
 594                                         printf("; cur=%*d", curmsgdigits,
 595                                                         fi[i].curmsg);
 596                                 }
 597                         }
 598
 599                         if (fi[i].others)
 600                                 printf(";%*s (others)", curprinted ?
 601                                                 0 : curmsgdigits + 6, "");
 602                         printf(".\n");
 603                 }
 604         }
 605
 606         /*
 607         ** Print folder/message totals
 608         */
 609         if (ftotal > 0 || (all && !fshort && ftotal >= 0)) {
 610                 if (all)
 611                         printf("\n");
 612                 printf("TOTAL = %d message%c in %d folder%s.\n",
 613                                 total_msgs, total_msgs != 1 ? 's' : ' ',
 614                                 total_folders, total_folders != 1 ? "s" : "");
 615         }
 616
 617         fflush(stdout);
 618 }
 619
 620 /*
 621 ** Set the current message and sychronize sequences
 622 */
 623
 624 static int
 625 sfold(struct msgs *mp, char *msg)
 626 {
 627         /* parse the message range/sequence/name and set SELECTED */
 628         if (!m_convert(mp, msg))
 629                 return 0;
 630
 631         if (mp->numsel > 1) {
 632                 admonish(NULL, "only one message at a time!");
 633                 return 0;
 634         }
 635         seq_setprev(mp);  /* set the previous-sequence */
 636         seq_setcur(mp, mp->lowsel);  /* set current message */
 637         seq_save(mp);  /* synchronize message sequences */
 638         context_save();  /* save the context file */
 639
 640         return 1;
 641 }
 642
 643
 644 /*
 645 ** Do the read only folders
 646 */
 647
 648 static void
 649 readonly_folders(void)
 650 {
 651         int atrlen;
 652         char atrcur[BUFSIZ];
 653         register struct node *np;
 654
 655         snprintf(atrcur, sizeof(atrcur), "atr-%s-", current);
 656         atrlen = strlen(atrcur);
 657
 658         for (np = m_defs; np; np = np->n_next)
 659                 if (isprefix(atrcur, np->n_name)
 660                                 && !isprefix(nmhdir, np->n_name + atrlen))
 661                         get_folder_info(np->n_name + atrlen, NULL);
 662 }