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 num_digits (int);
 125 static int sfold (struct msgs *, char *);
 126 static void addir (char *);
 127 static void addfold (char *);
 128 static int compare (char *, char *);
 129 static void readonly_folders (void);
 130
 131
 132 int
 133 main (int argc, char **argv)
 134 {
 135     int printsw = 0, listsw = 0;
 136     int pushsw = 0, popsw = 0;
 137     char *cp, *dp, *msg = NULL, *argfolder = NULL;
 138     char **ap, **argp, buf[BUFSIZ], **arguments;
 139     struct stat st;
 140
 141 #ifdef LOCALE
 142     setlocale(LC_ALL, "");
 143 #endif
 144     invo_name = r1bindex (argv[0], '/');
 145
 146     /* read user profile/context */
 147     context_read();
 148
 149     /*
 150      * If program was invoked with name ending
 151      * in `s', then add switch `-all'.
 152      */
 153     if (argv[0][strlen (argv[0]) - 1] == 's')
 154         all = 1;
 155
 156     arguments = getarguments (invo_name, argc, argv, 1);
 157     argp = arguments;
 158
 159     while ((cp = *argp++)) {
 160         if (*cp == '-') {
 161             switch (smatch (++cp, switches)) {
 162                 case AMBIGSW:
 163                     ambigsw (cp, switches);
 164                     done (1);
 165                 case UNKWNSW:
 166                     adios (NULL, "-%s unknown", cp);
 167
 168                 case HELPSW:
 169                     snprintf (buf, sizeof(buf), "%s [+folder] [msg] [switches]",
 170                         invo_name);
 171                     print_help (buf, switches, 1);
 172                     done (1);
 173                 case VERSIONSW:
 174                     print_version(invo_name);
 175                     done (1);
 176
 177                 case ALLSW:
 178                     all = 1;
 179                     continue;
 180
 181                 case NALLSW:
 182                     all = 0;
 183                     continue;
 184
 185                 case CREATSW:
 186                     fcreat = 1;
 187                     continue;
 188                 case NCREATSW:
 189                     fcreat = -1;
 190                     continue;
 191
 192                 case FASTSW:
 193                     fshort++;
 194                     continue;
 195                 case NFASTSW:
 196                     fshort = 0;
 197                     continue;
 198
 199                 case HDRSW:
 200                     fheader = 1;
 201                     continue;
 202                 case NHDRSW:
 203                     fheader = -1;
 204                     continue;
 205
 206                 case PACKSW:
 207                     fpack++;
 208                     continue;
 209                 case NPACKSW:
 210                     fpack = 0;
 211                     continue;
 212
 213                 case VERBSW:
 214                     fverb++;
 215                     continue;
 216                 case NVERBSW:
 217                     fverb = 0;
 218                     continue;
 219
 220                 case RECURSW:
 221                     frecurse++;
 222                     continue;
 223                 case NRECRSW:
 224                     frecurse = 0;
 225                     continue;
 226
 227                 case TOTALSW:
 228                     ftotal = 1;
 229                     continue;
 230                 case NTOTLSW:
 231                     ftotal = -1;
 232                     continue;
 233
 234                 case PRNTSW:
 235                     printsw = 1;
 236                     continue;
 237                 case NPRNTSW:
 238                     printsw = 0;
 239                     continue;
 240
 241                 case LISTSW:
 242                     listsw = 1;
 243                     continue;
 244                 case NLISTSW:
 245                     listsw = 0;
 246                     continue;
 247
 248                 case PUSHSW:
 249                     pushsw = 1;
 250                     listsw = 1;
 251                     popsw  = 0;
 252                     continue;
 253                 case POPSW:
 254                     popsw  = 1;
 255                     listsw = 1;
 256                     pushsw = 0;
 257                     continue;
 258             }
 259         }
 260         if (*cp == '+' || *cp == '@') {
 261             if (argfolder)
 262                 adios (NULL, "only one folder at a time!");
 263             else
 264                 argfolder = path (cp + 1, *cp == '+' ? TFOLDER : TSUBCWF);
 265         } else {
 266             if (msg)
 267                 adios (NULL, "only one (current) message at a time!");
 268             else
 269                 msg = cp;
 270         }
 271     }
 272
 273     if (!context_find ("path"))
 274         free (path ("./", TFOLDER));
 275     nmhdir = concat (m_maildir (""), "/", NULL);
 276
 277     /*
 278      * If we aren't working with the folder stack
 279      * (-push, -pop, -list) then the default is to print.
 280      */
 281     if (pushsw == 0 && popsw == 0 && listsw == 0)
 282         printsw++;
 283
 284     /* Pushing a folder onto the folder stack */
 285     if (pushsw) {
 286         if (!argfolder) {
 287             /* If no folder is given, the current folder and */
 288             /* the top of the folder stack are swapped.      */
 289             if ((cp = context_find (stack))) {
 290                 dp = getcpy (cp);
 291                 ap = brkstring (dp, " ", "\n");
 292                 argfolder = getcpy(*ap++);
 293             } else {
 294                 adios (NULL, "no other folder");
 295             }
 296             for (cp = getcpy (getfolder (1)); *ap; ap++)
 297                 cp = add (*ap, add (" ", cp));
 298             free (dp);
 299             context_replace (stack, cp);        /* update folder stack */
 300         } else {
 301             /* update folder stack */
 302             context_replace (stack,
 303                     (cp = context_find (stack))
 304                     ? concat (getfolder (1), " ", cp, NULL)
 305                     : getcpy (getfolder (1)));
 306         }
 307     }
 308
 309     /* Popping a folder off of the folder stack */
 310     if (popsw) {
 311         if (argfolder)
 312             adios (NULL, "sorry, no folders allowed with -pop");
 313         if ((cp = context_find (stack))) {
 314             dp = getcpy (cp);
 315             ap = brkstring (dp, " ", "\n");
 316             argfolder = getcpy(*ap++);
 317         } else {
 318             adios (NULL, "folder stack empty");
 319         }
 320         if (*ap) {
 321             /* if there's anything left in the stack */
 322             cp = getcpy (*ap++);
 323             for (; *ap; ap++)
 324                 cp = add (*ap, add (" ", cp));
 325             context_replace (stack, cp);        /* update folder stack */
 326         } else {
 327             context_del (stack);        /* delete folder stack entry from context */
 328         }
 329         free (dp);
 330     }
 331     if (pushsw || popsw) {
 332         cp = m_maildir(argfolder);
 333         if (access (cp, F_OK) == NOTOK)
 334             adios (cp, "unable to find folder");
 335         context_replace (pfolder, argfolder);   /* update current folder   */
 336         context_save ();                /* save the context file   */
 337         argfolder = NULL;
 338     }
 339
 340     /* Listing the folder stack */
 341     if (listsw) {
 342         printf ("%s", argfolder ? argfolder : getfolder (1));
 343         if ((cp = context_find (stack))) {
 344             dp = getcpy (cp);
 345             for (ap = brkstring (dp, " ", "\n"); *ap; ap++)
 346                 printf (" %s", *ap);
 347             free (dp);
 348         }
 349         printf ("\n");
 350
 351         if (!printsw)
 352             done (0);
 353     }
 354
 355     /* Allocate initial space to record folder names */
 356     maxfolders = NUMFOLDERS;
 357     folds = mh_xmalloc (maxfolders * sizeof(char *));
 358
 359     /* Allocate initial space to record folder information */
 360     maxFolderInfo = NUMFOLDERS;
 361     fi = mh_xmalloc (maxFolderInfo * sizeof(*fi));
 362
 363     /*
 364      * Scan the folders
 365      */
 366     if (all || ftotal > 0) {
 367         /*
 368          * If no folder is given, do them all
 369          */
 370         if (!argfolder) {
 371             if (msg)
 372                 admonish (NULL, "no folder given for message %s", msg);
 373             readonly_folders (); /* do any readonly folders */
 374             strncpy (folder, (cp = context_find (pfolder)) ? cp : "", sizeof(folder));
 375             dodir (".");
 376         } else {
 377             strncpy (folder, argfolder, sizeof(folder));
 378             if (get_folder_info (argfolder, msg)) {
 379                 context_replace (pfolder, argfolder);/* update current folder */
 380                 context_save ();                     /* save the context file */
 381             }
 382             /*
 383              * Since recurse wasn't done in get_folder_info(),
 384              * we still need to list all level-1 sub-folders.
 385              */
 386             if (!frecurse)
 387                 dodir (folder);
 388         }
 389     } else {
 390         strncpy (folder, argfolder ? argfolder : getfolder (1), sizeof(folder));
 391
 392         /*
 393          * Check if folder exists.  If not, then see if
 394          * we should create it, or just exit.
 395          */
 396         if (stat (strncpy (buf, m_maildir (folder), sizeof(buf)), &st) == -1) {
 397             if (errno != ENOENT)
 398                 adios (buf, "error on folder");
 399             if (fcreat == 0) {
 400                 /* ask before creating folder */
 401                 cp = concat ("Create folder \"", buf, "\"? ", NULL);
 402                 if (!getanswer (cp))
 403                     done (1);
 404                 free (cp);
 405             } else if (fcreat == -1) {
 406                 /* do not create, so exit */
 407                 done (1);
 408             }
 409             if (!makedir (buf))
 410                 adios (NULL, "unable to create folder %s", buf);
 411         }
 412
 413         if (get_folder_info (folder, msg) && argfolder) {
 414             /* update current folder */
 415             context_replace (pfolder, argfolder);
 416             }
 417     }
 418
 419     /*
 420      * Print out folder information
 421      */
 422     print_folders();
 423
 424     context_save ();    /* save the context file */
 425     return done (0);
 426 }
 427
 428 /*
 429  * Base routine for scanning a folder
 430  */
 431
 432 static void
 433 dodir (char *dir)
 434 {
 435     int i;
 436     int os = start;
 437     int of = foldp;
 438     char buffer[BUFSIZ];
 439
 440     start = foldp;
 441
 442     /* change directory to base of nmh directory */
 443     if (chdir (nmhdir) == NOTOK)
 444         adios (nmhdir, "unable to change directory to");
 445
 446     addir (strncpy (buffer, dir, sizeof(buffer)));
 447
 448     for (i = start; i < foldp; i++) {
 449         get_folder_info (folds[i], NULL);
 450         fflush (stdout);
 451     }
 452
 453     start = os;
 454     foldp = of;
 455 }
 456
 457 static int
 458 get_folder_info (char *fold, char *msg)
 459 {
 460     int i, retval = 1;
 461     char *mailfile;
 462     struct msgs *mp = NULL;
 463
 464     i = total_folders++;
 465
 466     /*
 467      * if necessary, reallocate the space
 468      * for folder information
 469      */
 470     if (total_folders >= maxFolderInfo) {
 471         maxFolderInfo += NUMFOLDERS;
 472         fi = mh_xrealloc (fi, maxFolderInfo * sizeof(*fi));
 473     }
 474
 475     fi[i].name   = fold;
 476     fi[i].nummsg = 0;
 477     fi[i].curmsg = 0;
 478     fi[i].lowmsg = 0;
 479     fi[i].hghmsg = 0;
 480     fi[i].others = 0;
 481     fi[i].error  = 0;
 482
 483     mailfile = m_maildir (fold);
 484
 485     if (!chdir (mailfile)) {
 486         if ((ftotal > 0) || !fshort || msg || fpack) {
 487             /*
 488              * create message structure and get folder info
 489              */
 490             if (!(mp = folder_read (fold))) {
 491                 admonish (NULL, "unable to read folder %s", fold);
 492                 return 0;
 493             }
 494
 495             /* set the current message */
 496             if (msg && !sfold (mp, msg))
 497                 retval = 0;
 498
 499             if (fpack) {
 500                 if (folder_pack (&mp, fverb) == -1)
 501                     done (1);
 502                 seq_save (mp);          /* synchronize the sequences */
 503                 context_save ();        /* save the context file     */
 504             }
 505
 506             /* record info for this folder */
 507             if ((ftotal > 0) || !fshort) {
 508                 fi[i].nummsg = mp->nummsg;
 509                 fi[i].curmsg = mp->curmsg;
 510                 fi[i].lowmsg = mp->lowmsg;
 511                 fi[i].hghmsg = mp->hghmsg;
 512                 fi[i].others = other_files (mp);
 513             }
 514
 515             folder_free (mp); /* free folder/message structure */
 516         }
 517     } else {
 518         fi[i].error = 1;
 519     }
 520
 521     if (frecurse && (fshort || fi[i].others) && (fi[i].error == 0))
 522         dodir (fold);
 523     return retval;
 524 }
 525
 526 /*
 527  * Print folder information
 528  */
 529
 530 static void
 531 print_folders (void)
 532 {
 533     int i, len, hasempty = 0, curprinted;
 534     int maxlen = 0, maxnummsg = 0, maxlowmsg = 0;
 535     int maxhghmsg = 0, maxcurmsg = 0, total_msgs = 0;
 536     int nummsgdigits, lowmsgdigits;
 537     int hghmsgdigits, curmsgdigits;
 538     char tmpname[BUFSIZ];
 539
 540     /*
 541      * compute a few values needed to for
 542      * printing various fields
 543      */
 544     for (i = 0; i < total_folders; i++) {
 545         /* length of folder name */
 546         len = strlen (fi[i].name);
 547         if (len > maxlen)
 548             maxlen = len;
 549
 550         /* If folder has error, skip the rest */
 551         if (fi[i].error)
 552             continue;
 553
 554         /* calculate total number of messages */
 555         total_msgs += fi[i].nummsg;
 556
 557         /* maximum number of messages */
 558         if (fi[i].nummsg > maxnummsg)
 559             maxnummsg = fi[i].nummsg;
 560
 561         /* maximum low message */
 562         if (fi[i].lowmsg > maxlowmsg)
 563             maxlowmsg = fi[i].lowmsg;
 564
 565         /* maximum high message */
 566         if (fi[i].hghmsg > maxhghmsg)
 567             maxhghmsg = fi[i].hghmsg;
 568
 569         /* maximum current message */
 570         if (fi[i].curmsg >= fi[i].lowmsg &&
 571             fi[i].curmsg <= fi[i].hghmsg &&
 572             fi[i].curmsg > maxcurmsg)
 573             maxcurmsg = fi[i].curmsg;
 574
 575         /* check for empty folders */
 576         if (fi[i].nummsg == 0)
 577             hasempty = 1;
 578     }
 579     nummsgdigits = num_digits (maxnummsg);
 580     lowmsgdigits = num_digits (maxlowmsg);
 581     hghmsgdigits = num_digits (maxhghmsg);
 582     curmsgdigits = num_digits (maxcurmsg);
 583
 584     if (hasempty && nummsgdigits < 2)
 585         nummsgdigits = 2;
 586
 587     /*
 588      * Print the header
 589      */
 590     if (fheader > 0 || (all && !fshort && fheader >= 0))
 591         printf ("%-*s %*s %-*s; %-*s %*s\n",
 592                 maxlen+1, "FOLDER",
 593                 nummsgdigits + 13, "# MESSAGES",
 594                 lowmsgdigits + hghmsgdigits + 4, " RANGE",
 595                 curmsgdigits + 4, "CUR",
 596                 9, "(OTHERS)");
 597
 598     /*
 599      * Print folder information
 600      */
 601     if (all || fshort || ftotal < 1) {
 602         for (i = 0; i < total_folders; i++) {
 603             if (fshort) {
 604                 printf ("%s\n", fi[i].name);
 605                 continue;
 606             }
 607
 608             /* Add `+' to end of name, if folder is current */
 609             if (strcmp (folder, fi[i].name))
 610                 snprintf (tmpname, sizeof(tmpname), "%s", fi[i].name);
 611             else
 612                 snprintf (tmpname, sizeof(tmpname), "%s+", fi[i].name);
 613
 614             if (fi[i].error) {
 615                 printf ("%-*s is unreadable\n", maxlen+1, tmpname);
 616                 continue;
 617             }
 618
 619             printf ("%-*s ", maxlen+1, tmpname);
 620
 621             curprinted = 0; /* remember if we print cur */
 622             if (fi[i].nummsg == 0) {
 623                 printf ("has %*s messages%*s",
 624                         nummsgdigits, "no",
 625                         fi[i].others ? lowmsgdigits + hghmsgdigits + 5 : 0, "");
 626             } else {
 627                 printf ("has %*d message%s  (%*d-%*d)",
 628                         nummsgdigits, fi[i].nummsg,
 629                         (fi[i].nummsg == 1) ? " " : "s",
 630                         lowmsgdigits, fi[i].lowmsg,
 631                         hghmsgdigits, fi[i].hghmsg);
 632                 if (fi[i].curmsg >= fi[i].lowmsg && fi[i].curmsg <= fi[i].hghmsg) {
 633                     curprinted = 1;
 634                     printf ("; cur=%*d", curmsgdigits, fi[i].curmsg);
 635                 }
 636             }
 637
 638             if (fi[i].others)
 639                 printf (";%*s (others)", curprinted ? 0 : curmsgdigits + 6, "");
 640             printf (".\n");
 641         }
 642     }
 643
 644     /*
 645      * Print folder/message totals
 646      */
 647     if (ftotal > 0 || (all && !fshort && ftotal >= 0)) {
 648         if (all)
 649             printf ("\n");
 650         printf ("TOTAL = %d message%c in %d folder%s.\n",
 651                 total_msgs, total_msgs != 1 ? 's' : ' ',
 652                 total_folders, total_folders != 1 ? "s" : "");
 653     }
 654
 655     fflush (stdout);
 656 }
 657
 658 /*
 659  * Calculate the number of digits in a nonnegative integer
 660  */
 661 int
 662 num_digits (int n)
 663 {
 664     int ndigits = 0;
 665
 666     /* Sanity check */
 667     if (n < 0)
 668         adios (NULL, "oops, num_digits called with negative value");
 669
 670     if (n == 0)
 671         return 1;
 672
 673     while (n) {
 674         n /= 10;
 675         ndigits++;
 676     }
 677
 678     return ndigits;
 679 }
 680
 681 /*
 682  * Set the current message and sychronize sequences
 683  */
 684
 685 static int
 686 sfold (struct msgs *mp, char *msg)
 687 {
 688     /* parse the message range/sequence/name and set SELECTED */
 689     if (!m_convert (mp, msg))
 690         return 0;
 691
 692     if (mp->numsel > 1) {
 693         admonish (NULL, "only one message at a time!");
 694         return 0;
 695     }
 696     seq_setprev (mp);           /* set the previous-sequence     */
 697     seq_setcur (mp, mp->lowsel);/* set current message           */
 698     seq_save (mp);              /* synchronize message sequences */
 699     context_save ();            /* save the context file         */
 700
 701     return 1;
 702 }
 703
 704
 705 static void
 706 addir (char *name)
 707 {
 708     int nlink;
 709     char *base, *cp;
 710     struct stat st;
 711     struct dirent *dp;
 712     DIR * dd;
 713
 714     cp = name + strlen (name);
 715     *cp++ = '/';
 716     *cp = '\0';
 717
 718     /*
 719      * A hack to skip over a leading
 720      * "./" in folder names.
 721      */
 722     base = strcmp (name, "./") ? name : name + 2;
 723
 724    /* short-cut to see if directory has any sub-directories */
 725     if (stat (name, &st) != -1 && st.st_nlink == 2)
 726         return;
 727
 728     if (!(dd = opendir (name))) {
 729         admonish (name, "unable to read directory ");
 730         return;
 731     }
 732
 733     /*
 734      * Keep track of the number of directories we've seen
 735      * so we can quit stat'ing early, if we've seen them all.
 736      */
 737     nlink = st.st_nlink;
 738
 739     while (nlink && (dp = readdir (dd))) {
 740         if (!strcmp (dp->d_name, ".") || !strcmp (dp->d_name, "..")) {
 741             nlink--;
 742             continue;
 743         }
 744         if (cp + NLENGTH(dp) + 2 >= name + BUFSIZ)
 745             continue;
 746         strcpy (cp, dp->d_name);
 747         if (stat (name, &st) != -1 && S_ISDIR(st.st_mode)) {
 748             /*
 749              * Check if this was really a symbolic link pointing at
 750              * a directory.  If not, then decrement link count.
 751              */
 752             if (lstat (name, &st) == -1)
 753                 nlink--;
 754             addfold (base);
 755         }
 756     }
 757
 758     closedir (dd);
 759     *--cp = '\0';
 760 }
 761
 762 /*
 763  * Add the folder name into the
 764  * list in a sorted fashion.
 765  */
 766
 767 static void
 768 addfold (char *fold)
 769 {
 770     register int i, j;
 771     register char *cp;
 772
 773     /* if necessary, reallocate the space for folder names */
 774     if (foldp >= maxfolders) {
 775         maxfolders += NUMFOLDERS;
 776         folds = mh_xrealloc (folds, maxfolders * sizeof(char *));
 777     }
 778
 779     cp = getcpy (fold);
 780     for (i = start; i < foldp; i++)
 781         if (compare (cp, folds[i]) < 0) {
 782             for (j = foldp - 1; j >= i; j--)
 783                 folds[j + 1] = folds[j];
 784             foldp++;
 785             folds[i] = cp;
 786             return;
 787         }
 788
 789     folds[foldp++] = cp;
 790 }
 791
 792
 793 static int
 794 compare (char *s1, char *s2)
 795 {
 796     register int i;
 797
 798     while (*s1 || *s2)
 799         if ((i = *s1++ - *s2++))
 800             return i;
 801
 802     return 0;
 803 }
 804
 805 /*
 806  * Do the read only folders
 807  */
 808
 809 static void
 810 readonly_folders (void)
 811 {
 812     int atrlen;
 813     char atrcur[BUFSIZ];
 814     register struct node *np;
 815
 816     snprintf (atrcur, sizeof(atrcur), "atr-%s-", current);
 817     atrlen = strlen (atrcur);
 818
 819     for (np = m_defs; np; np = np->n_next)
 820         if (ssequal (atrcur, np->n_name)
 821                 && !ssequal (nmhdir, np->n_name + atrlen))
 822             get_folder_info (np->n_name + atrlen, NULL);
 823 }