diplodocus.org Git - nmh/blob - uip/folder.c

   1
   2 /*
   3  * folder(s).c -- set/list the current message and/or folder
   4  *             -- push/pop a folder onto/from the folder stack
   5  *             -- list the folder stack
   6  *
   7  * $Id$
   8  *
   9  * This code is Copyright (c) 2002, by the authors of nmh.  See the
  10  * COPYRIGHT file in the root directory of the nmh distribution for
  11  * complete copyright information.
  12  */
  13
  14 #include <h/mh.h>
  15 #include <h/utils.h>
  16 #include <errno.h>
  17
  18 static struct swit switches[] = {
  19 #define ALLSW           0
  20     { "all", 0 },
  21 #define NALLSW          1
  22     { "noall", 0 },
  23 #define CREATSW         2
  24     { "create", 0 },
  25 #define NCREATSW        3
  26     { "nocreate", 0 },
  27 #define FASTSW          4
  28     { "fast", 0 },
  29 #define NFASTSW         5
  30     { "nofast", 0 },
  31 #define HDRSW           6
  32     { "header", 0 },
  33 #define NHDRSW          7
  34     { "noheader", 0 },
  35 #define PACKSW          8
  36     { "pack", 0 },
  37 #define NPACKSW         9
  38     { "nopack", 0 },
  39 #define VERBSW         10
  40     { "verbose", 0 },
  41 #define NVERBSW        11
  42     { "noverbose", 0 },
  43 #define RECURSW        12
  44     { "recurse", 0 },
  45 #define NRECRSW        13
  46     { "norecurse", 0 },
  47 #define TOTALSW        14
  48     { "total", 0 },
  49 #define NTOTLSW        15
  50     { "nototal", 0 },
  51 #define LISTSW         16
  52     { "list", 0 },
  53 #define NLISTSW        17
  54     { "nolist", 0 },
  55 #define PRNTSW         18
  56     { "print", 0 },
  57 #define NPRNTSW        19
  58     { "noprint", -4 },
  59 #define PUSHSW         20
  60     { "push", 0 },
  61 #define POPSW          21
  62     { "pop", 0 },
  63 #define VERSIONSW      22
  64     { "version", 0 },
  65 #define HELPSW         23
  66     { "help", 0 },
  67     { NULL, 0 }
  68 };
  69
  70 static int fshort   = 0;        /* output only folder names                 */
  71 static int fcreat   = 0;        /* should we ask to create new folders?     */
  72 static int fpack    = 0;        /* are we packing the folder?               */
  73 static int fverb    = 0;        /* print actions taken while packing folder */
  74 static int fheader  = 0;        /* should we output a header?               */
  75 static int frecurse = 0;        /* recurse through subfolders               */
  76 static int ftotal   = 0;        /* should we output the totals?             */
  77 static int all      = 0;        /* should we output all folders             */
  78
  79 static int total_folders = 0;   /* total number of folders                  */
  80
  81 static int start = 0;
  82 static int foldp = 0;
  83
  84 static char *nmhdir;
  85 static char *stack = "Folder-Stack";
  86 static char folder[BUFSIZ];
  87
  88 #define NUMFOLDERS 100
  89
  90 /*
  91  * This is how many folders we currently can hold in the array
  92  * `folds'.  We increase this amount by NUMFOLDERS at a time.
  93  */
  94 static int maxfolders;
  95 static char **folds;
  96
  97 /*
  98  * Structure to hold information about
  99  * folders as we scan them.
 100  */
 101 struct FolderInfo {
 102     char *name;
 103     int nummsg;
 104     int curmsg;
 105     int lowmsg;
 106     int hghmsg;
 107     int others;         /* others == 1 if other files in folder */
 108     int error;          /* error == 1 for unreadable folder     */
 109 };
 110
 111 /*
 112  * Dynamically allocated space to hold
 113  * all the folder information.
 114  */
 115 static struct FolderInfo *fi;
 116 static int maxFolderInfo;
 117
 118 /*
 119  * static prototypes
 120  */
 121 static void dodir (char *);
 122 static int get_folder_info (char *, char *);
 123 static void print_folders (void);
 124 static int sfold (struct msgs *, char *);
 125 static void addir (char *);
 126 static void addfold (char *);
 127 static int compare (char *, char *);
 128 static void readonly_folders (void);
 129
 130
 131 int
 132 main (int argc, char **argv)
 133 {
 134     int printsw = 0, listsw = 0;
 135     int pushsw = 0, popsw = 0;
 136     char *cp, *dp, *msg = NULL, *argfolder = NULL;
 137     char **ap, **argp, buf[BUFSIZ], **arguments;
 138
 139 #ifdef LOCALE
 140     setlocale(LC_ALL, "");
 141 #endif
 142     invo_name = r1bindex (argv[0], '/');
 143
 144     /* read user profile/context */
 145     context_read();
 146
 147     /*
 148      * If program was invoked with name ending
 149      * in `s', then add switch `-all'.
 150      */
 151     if (argv[0][strlen (argv[0]) - 1] == 's')
 152         all = 1;
 153
 154     arguments = getarguments (invo_name, argc, argv, 1);
 155     argp = arguments;
 156
 157     while ((cp = *argp++)) {
 158         if (*cp == '-') {
 159             switch (smatch (++cp, switches)) {
 160                 case AMBIGSW:
 161                     ambigsw (cp, switches);
 162                     done (1);
 163                 case UNKWNSW:
 164                     adios (NULL, "-%s unknown", cp);
 165
 166                 case HELPSW:
 167                     snprintf (buf, sizeof(buf), "%s [+folder] [msg] [switches]",
 168                         invo_name);
 169                     print_help (buf, switches, 1);
 170                     done (1);
 171                 case VERSIONSW:
 172                     print_version(invo_name);
 173                     done (1);
 174
 175                 case ALLSW:
 176                     all = 1;
 177                     continue;
 178
 179                 case NALLSW:
 180                     all = 0;
 181                     continue;
 182
 183                 case CREATSW:
 184                     fcreat = 1;
 185                     continue;
 186                 case NCREATSW:
 187                     fcreat = -1;
 188                     continue;
 189
 190                 case FASTSW:
 191                     fshort++;
 192                     continue;
 193                 case NFASTSW:
 194                     fshort = 0;
 195                     continue;
 196
 197                 case HDRSW:
 198                     fheader = 1;
 199                     continue;
 200                 case NHDRSW:
 201                     fheader = -1;
 202                     continue;
 203
 204                 case PACKSW:
 205                     fpack++;
 206                     continue;
 207                 case NPACKSW:
 208                     fpack = 0;
 209                     continue;
 210
 211                 case VERBSW:
 212                     fverb++;
 213                     continue;
 214                 case NVERBSW:
 215                     fverb = 0;
 216                     continue;
 217
 218                 case RECURSW:
 219                     frecurse++;
 220                     continue;
 221                 case NRECRSW:
 222                     frecurse = 0;
 223                     continue;
 224
 225                 case TOTALSW:
 226                     ftotal = 1;
 227                     continue;
 228                 case NTOTLSW:
 229                     ftotal = -1;
 230                     continue;
 231
 232                 case PRNTSW:
 233                     printsw = 1;
 234                     continue;
 235                 case NPRNTSW:
 236                     printsw = 0;
 237                     continue;
 238
 239                 case LISTSW:
 240                     listsw = 1;
 241                     continue;
 242                 case NLISTSW:
 243                     listsw = 0;
 244                     continue;
 245
 246                 case PUSHSW:
 247                     pushsw = 1;
 248                     listsw = 1;
 249                     popsw  = 0;
 250                     continue;
 251                 case POPSW:
 252                     popsw  = 1;
 253                     listsw = 1;
 254                     pushsw = 0;
 255                     continue;
 256             }
 257         }
 258         if (*cp == '+' || *cp == '@') {
 259             if (argfolder)
 260                 adios (NULL, "only one folder at a time!");
 261             else
 262                 argfolder = pluspath (cp);
 263         } else {
 264             if (msg)
 265                 adios (NULL, "only one (current) message at a time!");
 266             else
 267                 msg = cp;
 268         }
 269     }
 270
 271     if (!context_find ("path"))
 272         free (path ("./", TFOLDER));
 273     nmhdir = concat (m_maildir (""), "/", NULL);
 274
 275     /*
 276      * If we aren't working with the folder stack
 277      * (-push, -pop, -list) then the default is to print.
 278      */
 279     if (pushsw == 0 && popsw == 0 && listsw == 0)
 280         printsw++;
 281
 282     /* Pushing a folder onto the folder stack */
 283     if (pushsw) {
 284         if (!argfolder) {
 285             /* If no folder is given, the current folder and */
 286             /* the top of the folder stack are swapped.      */
 287             if ((cp = context_find (stack))) {
 288                 dp = getcpy (cp);
 289                 ap = brkstring (dp, " ", "\n");
 290                 argfolder = getcpy(*ap++);
 291             } else {
 292                 adios (NULL, "no other folder");
 293             }
 294             for (cp = getcpy (getfolder (1)); *ap; ap++)
 295                 cp = add (*ap, add (" ", cp));
 296             free (dp);
 297             context_replace (stack, cp);        /* update folder stack */
 298         } else {
 299             /* update folder stack */
 300             context_replace (stack,
 301                     (cp = context_find (stack))
 302                     ? concat (getfolder (1), " ", cp, NULL)
 303                     : getcpy (getfolder (1)));
 304         }
 305     }
 306
 307     /* Popping a folder off of the folder stack */
 308     if (popsw) {
 309         if (argfolder)
 310             adios (NULL, "sorry, no folders allowed with -pop");
 311         if ((cp = context_find (stack))) {
 312             dp = getcpy (cp);
 313             ap = brkstring (dp, " ", "\n");
 314             argfolder = getcpy(*ap++);
 315         } else {
 316             adios (NULL, "folder stack empty");
 317         }
 318         if (*ap) {
 319             /* if there's anything left in the stack */
 320             cp = getcpy (*ap++);
 321             for (; *ap; ap++)
 322                 cp = add (*ap, add (" ", cp));
 323             context_replace (stack, cp);        /* update folder stack */
 324         } else {
 325             context_del (stack);        /* delete folder stack entry from context */
 326         }
 327         free (dp);
 328     }
 329     if (pushsw || popsw) {
 330         cp = m_maildir(argfolder);
 331         if (access (cp, F_OK) == NOTOK)
 332             adios (cp, "unable to find folder");
 333         context_replace (pfolder, argfolder);   /* update current folder   */
 334         context_save ();                /* save the context file   */
 335         argfolder = NULL;
 336     }
 337
 338     /* Listing the folder stack */
 339     if (listsw) {
 340         printf ("%s", argfolder ? argfolder : getfolder (1));
 341         if ((cp = context_find (stack))) {
 342             dp = getcpy (cp);
 343             for (ap = brkstring (dp, " ", "\n"); *ap; ap++)
 344                 printf (" %s", *ap);
 345             free (dp);
 346         }
 347         printf ("\n");
 348
 349         if (!printsw)
 350             done (0);
 351     }
 352
 353     /* Allocate initial space to record folder names */
 354     maxfolders = NUMFOLDERS;
 355     folds = mh_xmalloc (maxfolders * sizeof(char *));
 356
 357     /* Allocate initial space to record folder information */
 358     maxFolderInfo = NUMFOLDERS;
 359     fi = mh_xmalloc (maxFolderInfo * sizeof(*fi));
 360
 361     /*
 362      * Scan the folders
 363      */
 364     if (all || ftotal > 0) {
 365         /*
 366          * If no folder is given, do them all
 367          */
 368         if (!argfolder) {
 369             if (msg)
 370                 admonish (NULL, "no folder given for message %s", msg);
 371             readonly_folders (); /* do any readonly folders */
 372             strncpy (folder, (cp = context_find (pfolder)) ? cp : "", sizeof(folder));
 373             dodir (".");
 374         } else {
 375             strncpy (folder, argfolder, sizeof(folder));
 376             if (get_folder_info (argfolder, msg)) {
 377                 context_replace (pfolder, argfolder);/* update current folder */
 378                 context_save ();                     /* save the context file */
 379             }
 380             /*
 381              * Since recurse wasn't done in get_folder_info(),
 382              * we still need to list all level-1 sub-folders.
 383              */
 384             if (!frecurse)
 385                 dodir (folder);
 386         }
 387     } else {
 388         strncpy (folder, argfolder ? argfolder : getfolder (1), sizeof(folder));
 389
 390         /*
 391          * Check if folder exists.  If not, then see if
 392          * we should create it, or just exit.
 393          */
 394         create_folder (m_maildir (folder), fcreat, done);
 395
 396         if (get_folder_info (folder, msg) && argfolder) {
 397             /* update current folder */
 398             context_replace (pfolder, argfolder);
 399             }
 400     }
 401
 402     /*
 403      * Print out folder information
 404      */
 405     print_folders();
 406
 407     context_save ();    /* save the context file */
 408     return done (0);
 409 }
 410
 411 /*
 412  * Base routine for scanning a folder
 413  */
 414
 415 static void
 416 dodir (char *dir)
 417 {
 418     int i;
 419     int os = start;
 420     int of = foldp;
 421     char buffer[BUFSIZ];
 422
 423     start = foldp;
 424
 425     /* change directory to base of nmh directory */
 426     if (chdir (nmhdir) == NOTOK)
 427         adios (nmhdir, "unable to change directory to");
 428
 429     addir (strncpy (buffer, dir, sizeof(buffer)));
 430
 431     for (i = start; i < foldp; i++) {
 432         get_folder_info (folds[i], NULL);
 433         fflush (stdout);
 434     }
 435
 436     start = os;
 437     foldp = of;
 438 }
 439
 440 static int
 441 get_folder_info (char *fold, char *msg)
 442 {
 443     int i, retval = 1;
 444     char *mailfile;
 445     struct msgs *mp = NULL;
 446
 447     i = total_folders++;
 448
 449     /*
 450      * if necessary, reallocate the space
 451      * for folder information
 452      */
 453     if (total_folders >= maxFolderInfo) {
 454         maxFolderInfo += NUMFOLDERS;
 455         fi = mh_xrealloc (fi, maxFolderInfo * sizeof(*fi));
 456     }
 457
 458     fi[i].name   = fold;
 459     fi[i].nummsg = 0;
 460     fi[i].curmsg = 0;
 461     fi[i].lowmsg = 0;
 462     fi[i].hghmsg = 0;
 463     fi[i].others = 0;
 464     fi[i].error  = 0;
 465
 466     mailfile = m_maildir (fold);
 467
 468     if (!chdir (mailfile)) {
 469         if ((ftotal > 0) || !fshort || msg || fpack) {
 470             /*
 471              * create message structure and get folder info
 472              */
 473             if (!(mp = folder_read (fold))) {
 474                 admonish (NULL, "unable to read folder %s", fold);
 475                 return 0;
 476             }
 477
 478             /* set the current message */
 479             if (msg && !sfold (mp, msg))
 480                 retval = 0;
 481
 482             if (fpack) {
 483                 if (folder_pack (&mp, fverb) == -1)
 484                     done (1);
 485                 seq_save (mp);          /* synchronize the sequences */
 486                 context_save ();        /* save the context file     */
 487             }
 488
 489             /* record info for this folder */
 490             if ((ftotal > 0) || !fshort) {
 491                 fi[i].nummsg = mp->nummsg;
 492                 fi[i].curmsg = mp->curmsg;
 493                 fi[i].lowmsg = mp->lowmsg;
 494                 fi[i].hghmsg = mp->hghmsg;
 495                 fi[i].others = other_files (mp);
 496             }
 497
 498             folder_free (mp); /* free folder/message structure */
 499         }
 500     } else {
 501         fi[i].error = 1;
 502     }
 503
 504     if (frecurse && (fshort || fi[i].others) && (fi[i].error == 0))
 505         dodir (fold);
 506     return retval;
 507 }
 508
 509 /*
 510  * Print folder information
 511  */
 512
 513 static void
 514 print_folders (void)
 515 {
 516     int i, len, hasempty = 0, curprinted;
 517     int maxlen = 0, maxnummsg = 0, maxlowmsg = 0;
 518     int maxhghmsg = 0, maxcurmsg = 0, total_msgs = 0;
 519     int nummsgdigits, lowmsgdigits;
 520     int hghmsgdigits, curmsgdigits;
 521     char tmpname[BUFSIZ];
 522
 523     /*
 524      * compute a few values needed to for
 525      * printing various fields
 526      */
 527     for (i = 0; i < total_folders; i++) {
 528         /* length of folder name */
 529         len = strlen (fi[i].name);
 530         if (len > maxlen)
 531             maxlen = len;
 532
 533         /* If folder has error, skip the rest */
 534         if (fi[i].error)
 535             continue;
 536
 537         /* calculate total number of messages */
 538         total_msgs += fi[i].nummsg;
 539
 540         /* maximum number of messages */
 541         if (fi[i].nummsg > maxnummsg)
 542             maxnummsg = fi[i].nummsg;
 543
 544         /* maximum low message */
 545         if (fi[i].lowmsg > maxlowmsg)
 546             maxlowmsg = fi[i].lowmsg;
 547
 548         /* maximum high message */
 549         if (fi[i].hghmsg > maxhghmsg)
 550             maxhghmsg = fi[i].hghmsg;
 551
 552         /* maximum current message */
 553         if (fi[i].curmsg >= fi[i].lowmsg &&
 554             fi[i].curmsg <= fi[i].hghmsg &&
 555             fi[i].curmsg > maxcurmsg)
 556             maxcurmsg = fi[i].curmsg;
 557
 558         /* check for empty folders */
 559         if (fi[i].nummsg == 0)
 560             hasempty = 1;
 561     }
 562     nummsgdigits = num_digits (maxnummsg);
 563     lowmsgdigits = num_digits (maxlowmsg);
 564     hghmsgdigits = num_digits (maxhghmsg);
 565     curmsgdigits = num_digits (maxcurmsg);
 566
 567     if (hasempty && nummsgdigits < 2)
 568         nummsgdigits = 2;
 569
 570     /*
 571      * Print the header
 572      */
 573     if (fheader > 0 || (all && !fshort && fheader >= 0))
 574         printf ("%-*s %*s %-*s; %-*s %*s\n",
 575                 maxlen+1, "FOLDER",
 576                 nummsgdigits + 13, "# MESSAGES",
 577                 lowmsgdigits + hghmsgdigits + 4, " RANGE",
 578                 curmsgdigits + 4, "CUR",
 579                 9, "(OTHERS)");
 580
 581     /*
 582      * Print folder information
 583      */
 584     if (all || fshort || ftotal < 1) {
 585         for (i = 0; i < total_folders; i++) {
 586             if (fshort) {
 587                 printf ("%s\n", fi[i].name);
 588                 continue;
 589             }
 590
 591             /* Add `+' to end of name, if folder is current */
 592             if (strcmp (folder, fi[i].name))
 593                 snprintf (tmpname, sizeof(tmpname), "%s", fi[i].name);
 594             else
 595                 snprintf (tmpname, sizeof(tmpname), "%s+", fi[i].name);
 596
 597             if (fi[i].error) {
 598                 printf ("%-*s is unreadable\n", maxlen+1, tmpname);
 599                 continue;
 600             }
 601
 602             printf ("%-*s ", maxlen+1, tmpname);
 603
 604             curprinted = 0; /* remember if we print cur */
 605             if (fi[i].nummsg == 0) {
 606                 printf ("has %*s messages%*s",
 607                         nummsgdigits, "no",
 608                         fi[i].others ? lowmsgdigits + hghmsgdigits + 5 : 0, "");
 609             } else {
 610                 printf ("has %*d message%s  (%*d-%*d)",
 611                         nummsgdigits, fi[i].nummsg,
 612                         (fi[i].nummsg == 1) ? " " : "s",
 613                         lowmsgdigits, fi[i].lowmsg,
 614                         hghmsgdigits, fi[i].hghmsg);
 615                 if (fi[i].curmsg >= fi[i].lowmsg && fi[i].curmsg <= fi[i].hghmsg) {
 616                     curprinted = 1;
 617                     printf ("; cur=%*d", curmsgdigits, fi[i].curmsg);
 618                 }
 619             }
 620
 621             if (fi[i].others)
 622                 printf (";%*s (others)", curprinted ? 0 : curmsgdigits + 6, "");
 623             printf (".\n");
 624         }
 625     }
 626
 627     /*
 628      * Print folder/message totals
 629      */
 630     if (ftotal > 0 || (all && !fshort && ftotal >= 0)) {
 631         if (all)
 632             printf ("\n");
 633         printf ("TOTAL = %d message%c in %d folder%s.\n",
 634                 total_msgs, total_msgs != 1 ? 's' : ' ',
 635                 total_folders, total_folders != 1 ? "s" : "");
 636     }
 637
 638     fflush (stdout);
 639 }
 640
 641 /*
 642  * Set the current message and sychronize sequences
 643  */
 644
 645 static int
 646 sfold (struct msgs *mp, char *msg)
 647 {
 648     /* parse the message range/sequence/name and set SELECTED */
 649     if (!m_convert (mp, msg))
 650         return 0;
 651
 652     if (mp->numsel > 1) {
 653         admonish (NULL, "only one message at a time!");
 654         return 0;
 655     }
 656     seq_setprev (mp);           /* set the previous-sequence     */
 657     seq_setcur (mp, mp->lowsel);/* set current message           */
 658     seq_save (mp);              /* synchronize message sequences */
 659     context_save ();            /* save the context file         */
 660
 661     return 1;
 662 }
 663
 664
 665 static void
 666 addir (char *name)
 667 {
 668     int nlink;
 669     char *base, *cp;
 670     struct stat st;
 671     struct dirent *dp;
 672     DIR * dd;
 673
 674     cp = name + strlen (name);
 675     *cp++ = '/';
 676     *cp = '\0';
 677
 678     /*
 679      * A hack to skip over a leading
 680      * "./" in folder names.
 681      */
 682     base = strcmp (name, "./") ? name : name + 2;
 683
 684    /* short-cut to see if directory has any sub-directories */
 685     if (stat (name, &st) != -1 && st.st_nlink == 2)
 686         return;
 687
 688     if (!(dd = opendir (name))) {
 689         admonish (name, "unable to read directory ");
 690         return;
 691     }
 692
 693     /*
 694      * Keep track of the number of directories we've seen
 695      * so we can quit stat'ing early, if we've seen them all.
 696      */
 697     nlink = st.st_nlink;
 698
 699     while (nlink && (dp = readdir (dd))) {
 700         if (!strcmp (dp->d_name, ".") || !strcmp (dp->d_name, "..")) {
 701             nlink--;
 702             continue;
 703         }
 704         if (cp + NLENGTH(dp) + 2 >= name + BUFSIZ)
 705             continue;
 706         strcpy (cp, dp->d_name);
 707         if (stat (name, &st) != -1 && S_ISDIR(st.st_mode)) {
 708             /*
 709              * Check if this was really a symbolic link pointing at
 710              * a directory.  If not, then decrement link count.
 711              */
 712             if (lstat (name, &st) == -1)
 713                 nlink--;
 714             addfold (base);
 715         }
 716     }
 717
 718     closedir (dd);
 719     *--cp = '\0';
 720 }
 721
 722 /*
 723  * Add the folder name into the
 724  * list in a sorted fashion.
 725  */
 726
 727 static void
 728 addfold (char *fold)
 729 {
 730     register int i, j;
 731     register char *cp;
 732
 733     /* if necessary, reallocate the space for folder names */
 734     if (foldp >= maxfolders) {
 735         maxfolders += NUMFOLDERS;
 736         folds = mh_xrealloc (folds, maxfolders * sizeof(char *));
 737     }
 738
 739     cp = getcpy (fold);
 740     for (i = start; i < foldp; i++)
 741         if (compare (cp, folds[i]) < 0) {
 742             for (j = foldp - 1; j >= i; j--)
 743                 folds[j + 1] = folds[j];
 744             foldp++;
 745             folds[i] = cp;
 746             return;
 747         }
 748
 749     folds[foldp++] = cp;
 750 }
 751
 752
 753 static int
 754 compare (char *s1, char *s2)
 755 {
 756     register int i;
 757
 758     while (*s1 || *s2)
 759         if ((i = *s1++ - *s2++))
 760             return i;
 761
 762     return 0;
 763 }
 764
 765 /*
 766  * Do the read only folders
 767  */
 768
 769 static void
 770 readonly_folders (void)
 771 {
 772     int atrlen;
 773     char atrcur[BUFSIZ];
 774     register struct node *np;
 775
 776     snprintf (atrcur, sizeof(atrcur), "atr-%s-", current);
 777     atrlen = strlen (atrcur);
 778
 779     for (np = m_defs; np; np = np->n_next)
 780         if (ssequal (atrcur, np->n_name)
 781                 && !ssequal (nmhdir, np->n_name + atrlen))
 782             get_folder_info (np->n_name + atrlen, NULL);
 783 }