2 * flist.c -- list nmh folders containing messages
3 * -- in a given sequence
6 * David Nichols, Xerox-PARC, November, 1992
8 * Copyright (c) 1994 Xerox Corporation.
9 * Use and copying of this software and preparation of derivative works based
10 * upon this software are permitted. Any distribution of this software or
11 * derivative works must comply with all applicable United States export
12 * control laws. This software is made available AS IS, and Xerox Corporation
13 * makes no warranty about the software, its performance or its conformity to
24 * We allocate space to record the names of folders
25 * (foldersToDo array), this number of elements at a time.
27 #define MAXFOLDERS 100
30 static struct swit switches[] = {
32 { "sequence name", 0 },
65 char *name; /* name of folder */
67 int error; /* error == 1 for unreadable folder */
68 int nMsgs; /* number of messages in folder */
69 int nSeq[NUMATTRS]; /* number of messages in each sequence */
70 int private[NUMATTRS]; /* is given sequence, public or private */
73 static struct Folder *orders = NULL;
74 static int nOrders = 0;
75 static int nOrdersAlloced = 0;
76 static struct Folder *folders = NULL;
77 static unsigned int nFolders = 0;
78 static int nFoldersAlloced = 0;
80 /* info on folders to search */
81 static char **foldersToDo;
82 static int numfolders;
83 static int maxfolders;
85 /* info on sequences to search for */
86 static char *sequencesToDo[NUMATTRS];
87 static unsigned int numsequences;
89 static int all = FALSE; /* scan all folders in top level? */
90 static int alphaOrder = FALSE; /* want alphabetical order only */
91 static int recurse = FALSE; /* show nested folders? */
92 static int showzero = TRUE; /* show folders even if no messages in seq? */
93 static int Total = TRUE; /* display info on number of messages in *
94 * sequence found, and total num messages */
96 static char curfolder[BUFSIZ]; /* name of the current folder */
97 static char *nmhdir; /* base nmh mail directory */
100 * Type for a compare function for qsort. This keeps
101 * the compiler happy.
103 typedef int (*qsort_comp) (const void *, const void *);
108 int CompareFolders(struct Folder *, struct Folder *);
109 void GetFolderOrder(void);
110 void ScanFolders(void);
111 int AddFolder(char *, int);
112 void BuildFolderList(char *, int);
113 void BuildFolderListRecurse(char *, struct stat *, int);
114 void PrintFolders(void);
115 void AllocFolders(struct Folder **, int *, int);
116 int AssignPriority(char *);
117 static void do_readonly_folders(void);
122 main(int argc, char **argv)
129 setlocale(LC_ALL, "");
131 invo_name = r1bindex(argv[0], '/');
133 /* read user profile/context */
137 * If program was invoked with name ending
138 * in `s', then add switch `-all'.
140 if (argv[0][strlen (argv[0]) - 1] == 's')
143 arguments = getarguments (invo_name, argc, argv, 1);
146 /* allocate the initial space to record the folder names */
148 maxfolders = MAXFOLDERS;
149 foldersToDo = (char **) mh_xmalloc ((size_t) (maxfolders * sizeof(*foldersToDo)));
151 /* no sequences yet */
154 /* parse arguments */
155 while ((cp = *argp++)) {
157 switch (smatch(++cp, switches)) {
159 ambigsw(cp, switches);
162 adios(NULL, "-%s unknown", cp);
165 snprintf(buf, sizeof(buf), "%s [+folder1 [+folder2 ...]][switches]",
167 print_help(buf, switches, 1);
170 print_version(invo_name);
174 if (!(cp = *argp++) || *cp == '-')
175 adios (NULL, "missing argument to %s", argp[-2]);
177 /* check if too many sequences specified */
178 if (numsequences >= NUMATTRS)
179 adios (NULL, "too many sequences (more than %d) specified", NUMATTRS);
180 sequencesToDo[numsequences++] = cp;
223 * Check if we need to allocate more space
226 if (numfolders >= maxfolders) {
227 maxfolders += MAXFOLDERS;
228 foldersToDo = (char **) mh_xrealloc (foldersToDo,
229 (size_t) (maxfolders * sizeof(*foldersToDo)));
231 if (*cp == '+' || *cp == '@') {
232 foldersToDo[numfolders++] =
235 foldersToDo[numfolders++] = cp;
239 if (!context_find ("path"))
240 free (path ("./", TFOLDER));
242 /* get current folder */
243 strncpy (curfolder, getfolder(1), sizeof(curfolder));
245 /* get nmh base directory */
246 nmhdir = m_maildir ("");
249 * If we didn't specify any sequences, we search
250 * for the "Unseen-Sequence" profile entry and use
251 * all the sequences defined there. We check to
252 * make sure that the Unseen-Sequence entry doesn't
253 * contain more than NUMATTRS sequences.
255 if (numsequences == 0) {
256 if ((cp = context_find(usequence)) && *cp) {
260 ap = brkstring (dp, " ", "\n");
261 for (; ap && *ap; ap++) {
262 if (numsequences >= NUMATTRS)
263 adios (NULL, "too many sequences (more than %d) in %s profile entry",
264 NUMATTRS, usequence);
266 sequencesToDo[numsequences++] = *ap;
269 adios (NULL, "no sequence specified or %s profile entry found", usequence);
275 qsort(folders, nFolders, sizeof(struct Folder), (qsort_comp) CompareFolders);
282 * Read the Flist-Order profile entry to determine
283 * how to sort folders for output.
289 unsigned char *p, *s;
293 if (!(p = context_find("Flist-Order")))
299 while (*p && !isspace(*p))
303 AllocFolders(&orders, &nOrdersAlloced, nOrders + 1);
304 o = &orders[nOrders++];
305 o->priority = priority++;
306 o->name = (char *) mh_xmalloc(p - s + 1);
307 strncpy(o->name, s, p - s);
315 * Scan all the necessary folders
324 * change directory to base of nmh directory
326 if (chdir (nmhdir) == NOTOK)
327 adios (nmhdir, "unable to change directory to");
329 if (numfolders > 0) {
331 strncpy (curfolder, foldersToDo[numfolders - 1], sizeof(curfolder));
332 context_replace (pfolder, curfolder);/* update current folder */
333 context_save (); /* save the context file */
336 * Scan each given folder. If -all is given,
337 * then also scan the 1st level subfolders under
340 for (i = 0; i < numfolders; ++i)
341 BuildFolderList(foldersToDo[i], all ? 1 : 0);
345 * Do the readonly folders
347 do_readonly_folders();
350 * Now scan the entire nmh directory for folders
352 BuildFolderList(".", 0);
355 * Else scan current folder
357 BuildFolderList(curfolder, 0);
363 * Initial building of folder list for
364 * the top of our search tree.
368 BuildFolderList(char *dirName, int searchdepth)
372 /* Make sure we have a directory */
373 if ((stat(dirName, &st) == -1) || !S_ISDIR(st.st_mode))
377 * If base directory, don't add it to the
378 * folder list. We just recurse into it.
380 if (!strcmp (dirName, ".")) {
381 BuildFolderListRecurse (".", &st, 0);
386 * Add this folder to the list.
387 * If recursing and directory has subfolders,
388 * then build folder list for subfolders.
390 if (AddFolder(dirName, showzero) && (recurse || searchdepth) && st.st_nlink > 2)
391 BuildFolderListRecurse(dirName, &st, searchdepth - 1);
395 * Recursive building of folder list
399 BuildFolderListRecurse(char *dirName, struct stat *s, int searchdepth)
401 char *base, name[PATH_MAX];
409 * Keep track of number of directories we've seen so we can
410 * stop stat'ing entries in this directory once we've seen
411 * them all. This optimization will fail if you have extra
412 * directories beginning with ".", since we don't bother to
413 * stat them. But that shouldn't generally be a problem.
415 nlinks = s->st_nlink;
417 /* Disable the optimization under conditions where st_nlink
418 is set to 1. That happens on Cygwin, for example:
419 http://cygwin.com/ml/cygwin-apps/2008-08/msg00264.html */
423 if (!(dir = opendir(dirName)))
424 adios(dirName, "can't open directory");
427 * A hack so that we don't see a
428 * leading "./" in folder names.
430 base = strcmp (dirName, ".") ? dirName : dirName + 1;
432 while (nlinks && (dp = readdir(dir))) {
433 if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, "..")) {
437 if (dp->d_name[0] == '.')
439 /* Check to see if the name of the file is a number
440 * if it is, we assume it's a mail file and skip it
442 for (n = dp->d_name; *n && isdigit(*n); n++);
445 strncpy (name, base, sizeof(name) - 2);
448 strncat(name, dp->d_name, sizeof(name) - strlen(name) - 1);
449 if ((stat(name, &st) != -1) && S_ISDIR(st.st_mode)) {
451 * Check if this was really a symbolic link pointing
452 * to a directory. If not, then decrement link count.
454 if (lstat (name, &st) == -1)
456 /* Add this folder to the list */
457 if (AddFolder(name, showzero) &&
458 (recurse || searchdepth) && st.st_nlink > 2)
459 BuildFolderListRecurse(name, &st, searchdepth - 1);
466 * Add this folder to our list, counting the total number of
467 * messages and the number of messages in each sequence.
471 AddFolder(char *name, int force)
475 int seqnum[NUMATTRS], nSeq[NUMATTRS];
479 /* Read folder and create message structure */
480 if (!(mp = folder_read (name))) {
481 /* Oops, error occurred. Record it and continue. */
482 AllocFolders(&folders, &nFoldersAlloced, nFolders + 1);
483 f = &folders[nFolders++];
484 f->name = getcpy(name);
486 f->priority = AssignPriority(f->name);
490 for (i = 0; i < numsequences; i++) {
491 /* Convert sequences to their sequence numbers */
492 if (sequencesToDo[i])
493 seqnum[i] = seq_getnum(mp, sequencesToDo[i]);
497 /* Now count messages in this sequence */
499 if (mp->nummsg > 0 && seqnum[i] != -1) {
500 for (msgnum = mp->lowmsg; msgnum <= mp->hghmsg; msgnum++) {
501 if (in_sequence(mp, seqnum[i], msgnum))
507 /* Check if any of the sequence checks were nonzero */
509 for (i = 0; i < numsequences; i++) {
516 if (nonzero || force) {
517 /* save general folder information */
518 AllocFolders(&folders, &nFoldersAlloced, nFolders + 1);
519 f = &folders[nFolders++];
520 f->name = getcpy(name);
521 f->nMsgs = mp->nummsg;
523 f->priority = AssignPriority(f->name);
525 /* record the sequence information */
526 for (i = 0; i < numsequences; i++) {
527 f->nSeq[i] = nSeq[i];
528 f->private[i] = (seqnum[i] != -1) ? is_seq_private(mp, seqnum[i]) : 0;
532 folder_free (mp); /* free folder/message structure */
537 * Print the folder/sequence information
543 char tmpname[BUFSIZ];
544 unsigned int i, j, len, has_private = 0;
545 unsigned int maxfolderlen = 0, maxseqlen = 0;
546 int maxnum = 0, maxseq = 0;
549 for (i = 0; i < nFolders; i++)
550 printf("%s\n", folders[i].name);
555 * Find the width we need for various fields
557 for (i = 0; i < nFolders; ++i) {
558 /* find the length of longest folder name */
559 len = strlen(folders[i].name);
560 if (len > maxfolderlen)
563 /* If folder had error, skip the rest */
564 if (folders[i].error)
567 /* find the maximum total messages */
568 if (folders[i].nMsgs > maxnum)
569 maxnum = folders[i].nMsgs;
571 for (j = 0; j < numsequences; j++) {
572 /* find maximum width of sequence name */
573 len = strlen (sequencesToDo[j]);
574 if ((folders[i].nSeq[j] > 0 || showzero) && (len > maxseqlen))
577 /* find the maximum number of messages in sequence */
578 if (folders[i].nSeq[j] > maxseq)
579 maxseq = folders[i].nSeq[j];
581 /* check if this sequence is private in any of the folders */
582 if (folders[i].private[j])
587 /* Now print all the folder/sequence information */
588 for (i = 0; i < nFolders; i++) {
589 for (j = 0; j < numsequences; j++) {
590 if (folders[i].nSeq[j] > 0 || showzero) {
591 /* Add `+' to end of name of current folder */
592 if (strcmp(curfolder, folders[i].name))
593 snprintf(tmpname, sizeof(tmpname), "%s", folders[i].name);
595 snprintf(tmpname, sizeof(tmpname), "%s+", folders[i].name);
597 if (folders[i].error) {
598 printf("%-*s is unreadable\n", maxfolderlen+1, tmpname);
602 printf("%-*s has %*d in sequence %-*s%s; out of %*d\n",
603 maxfolderlen+1, tmpname,
604 num_digits(maxseq), folders[i].nSeq[j],
605 maxseqlen, sequencesToDo[j],
606 !has_private ? "" : folders[i].private[j] ? " (private)" : " ",
607 num_digits(maxnum), folders[i].nMsgs);
614 * Put them in priority order.
618 CompareFolders(struct Folder *f1, struct Folder *f2)
620 if (!alphaOrder && f1->priority != f2->priority)
621 return f1->priority - f2->priority;
623 return strcmp(f1->name, f2->name);
627 * Make sure we have at least n folders allocated.
631 AllocFolders(struct Folder **f, int *nfa, int n)
637 *f = (struct Folder *) mh_xmalloc (*nfa * (sizeof(struct Folder)));
640 *f = (struct Folder *) mh_xrealloc (*f, *nfa * (sizeof(struct Folder)));
645 * Return the priority for a name. The highest comes from an exact match.
646 * After that, the longest match (then first) assigns the priority.
649 AssignPriority(char *name)
657 for (i = 0; i < nOrders; ++i) {
659 if (!strcmp(name, o->name))
661 ol = strlen(o->name);
666 if (o->name[0] == '*' && !strcmp(o->name + 1, name + (nl - ol + 1))) {
669 } else if (o->name[ol - 1] == '*' && strncmp(o->name, name, ol - 1) == 0) {
678 * Do the read only folders
682 do_readonly_folders (void)
686 register struct node *np;
688 snprintf (atrcur, sizeof(atrcur), "atr-%s-", current);
689 atrlen = strlen (atrcur);
691 for (np = m_defs; np; np = np->n_next)
692 if (ssequal (atrcur, np->n_name)
693 && !ssequal (nmhdir, np->n_name + atrlen))
694 BuildFolderList (np->n_name + atrlen, 0);