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

   1 /* scan.c -- display a one-line "scan" listing of folder or messages
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include <h/mh.h>
   9 #include <h/fmt_scan.h>
  10 #include <h/scansbr.h>
  11 #include <h/tws.h>
  12 #include <h/mts.h>
  13 #include <h/utils.h>
  14
  15 #define SCAN_SWITCHES \
  16     X("clear", 0, CLRSW) \
  17     X("noclear", 0, NCLRSW) \
  18     X("form formatfile", 0, FORMSW) \
  19     X("format string", 5, FMTSW) \
  20     X("header", 0, HEADSW) \
  21     X("noheader", 0, NHEADSW) \
  22     X("width columns", 0, WIDTHSW) \
  23     X("reverse", 0, REVSW) \
  24     X("noreverse", 0, NREVSW) \
  25     X("file file", 4, FILESW) \
  26     X("version", 0, VERSIONSW) \
  27     X("help", 0, HELPSW) \
  28
  29 #define X(sw, minchars, id) id,
  30 DEFINE_SWITCH_ENUM(SCAN);
  31 #undef X
  32
  33 #define X(sw, minchars, id) { sw, minchars, id },
  34 DEFINE_SWITCH_ARRAY(SCAN, switches);
  35 #undef X
  36
  37
  38 int
  39 main (int argc, char **argv)
  40 {
  41     int clearflag = 0, hdrflag = 0, ontty;
  42     int width = -1, revflag = 0;
  43     int i, state, msgnum;
  44     ivector_t seqnum = ivector_create (0);
  45     int unseen, num_unseen_seq = 0;
  46     char *cp, *maildir, *file = NULL, *folder = NULL;
  47     char *form = NULL, *format = NULL, buf[BUFSIZ];
  48     char **argp, *nfs, **arguments;
  49     struct msgs_array msgs = { 0, 0, NULL };
  50     struct msgs *mp;
  51     FILE *in;
  52
  53     if (nmh_init(argv[0], 1)) { return 1; }
  54
  55     mts_init ();
  56     arguments = getarguments (invo_name, argc, argv, 1);
  57     argp = arguments;
  58
  59     /*
  60      * Parse arguments
  61      */
  62     while ((cp = *argp++)) {
  63         if (*cp == '-') {
  64             switch (smatch (++cp, switches)) {
  65                 case AMBIGSW:
  66                     ambigsw (cp, switches);
  67                     done (1);
  68                 case UNKWNSW:
  69                     adios (NULL, "-%s unknown", cp);
  70
  71                 case HELPSW:
  72                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  73                         invo_name);
  74                     print_help (buf, switches, 1);
  75                     done (0);
  76                 case VERSIONSW:
  77                     print_version(invo_name);
  78                     done (0);
  79
  80                 case CLRSW:
  81                     clearflag++;
  82                     continue;
  83                 case NCLRSW:
  84                     clearflag = 0;
  85                     continue;
  86
  87                 case FORMSW:
  88                     if (!(form = *argp++) || *form == '-')
  89                         adios (NULL, "missing argument to %s", argp[-2]);
  90                     format = NULL;
  91                     continue;
  92                 case FMTSW:
  93                     if (!(format = *argp++) || *format == '-')
  94                         adios (NULL, "missing argument to %s", argp[-2]);
  95                     form = NULL;
  96                     continue;
  97
  98                 case HEADSW:
  99                     hdrflag++;
 100                     continue;
 101                 case NHEADSW:
 102                     hdrflag = 0;
 103                     continue;
 104
 105                 case WIDTHSW:
 106                     if (!(cp = *argp++) || *cp == '-')
 107                         adios (NULL, "missing argument to %s", argp[-2]);
 108                     width = atoi (cp);
 109                     continue;
 110                 case REVSW:
 111                     revflag++;
 112                     continue;
 113                 case NREVSW:
 114                     revflag = 0;
 115                     continue;
 116
 117                 case FILESW:
 118                     if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
 119                         adios (NULL, "missing argument to %s", argp[-2]);
 120                     if (strcmp (file = cp, "-"))
 121                         file = path (cp, TFILE);
 122                     continue;
 123             }
 124         }
 125         if (*cp == '+' || *cp == '@') {
 126             if (folder)
 127                 adios (NULL, "only one folder at a time!");
 128             else
 129                 folder = pluspath (cp);
 130         } else
 131                 app_msgarg(&msgs, cp);
 132     }
 133
 134     if (!context_find ("path"))
 135         free (path ("./", TFOLDER));
 136
 137     /*
 138      * Get new format string.  Must be before chdir().
 139      */
 140     nfs = new_fs (form, format, FORMAT);
 141
 142     /*
 143      * We are scanning a maildrop file
 144      */
 145     if (file) {
 146         if (msgs.size)
 147             adios (NULL, "\"msgs\" not allowed with -file");
 148         if (folder)
 149             adios (NULL, "\"+folder\" not allowed with -file");
 150
 151         /* check if "file" is really stdin */
 152         if (strcmp (file, "-") == 0) {
 153             in = stdin;
 154             file = "stdin";
 155         } else {
 156             if ((in = fopen (file, "r")) == NULL)
 157                 adios (file, "unable to open");
 158         }
 159
 160         if (hdrflag) {
 161             printf ("FOLDER %s\t%s\n", file, dtimenow (1));
 162         }
 163
 164         scan_detect_mbox_style (in);
 165         for (msgnum = 1; ; ++msgnum) {
 166             charstring_t scanl = NULL;
 167
 168             state = scan (in, msgnum, -1, nfs, width, 0, 0,
 169                           hdrflag ? file : NULL, 0L, 1, &scanl);
 170             charstring_free (scanl);
 171             if (state != SCNMSG && state != SCNENC)
 172                 break;
 173         }
 174         scan_finished ();
 175         fclose (in);
 176         done (0);
 177     }
 178
 179     /*
 180      * We are scanning a folder
 181      */
 182
 183     if (!msgs.size)
 184         app_msgarg(&msgs, "all");
 185     if (!folder)
 186         folder = getfolder (1);
 187     maildir = m_maildir (folder);
 188
 189     if (chdir (maildir) == NOTOK)
 190         adios (maildir, "unable to change directory to");
 191
 192     /* read folder and create message structure */
 193     if (!(mp = folder_read (folder, 1)))
 194         adios (NULL, "unable to read folder %s", folder);
 195
 196     /* check for empty folder */
 197     if (mp->nummsg == 0)
 198         adios (NULL, "no messages in %s", folder);
 199
 200     /* parse all the message ranges/sequences and set SELECTED */
 201     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 202         if (!m_convert (mp, msgs.msgs[msgnum]))
 203             done(1);
 204     seq_setprev (mp);                   /* set the Previous-Sequence */
 205
 206     context_replace (pfolder, folder);  /* update current folder         */
 207     seq_save (mp);                      /* synchronize message sequences */
 208     context_save ();                    /* save the context file         */
 209
 210     /*
 211      * Get the sequence number for each sequence
 212      * specified by Unseen-Sequence
 213      */
 214     if ((cp = context_find (usequence)) && *cp) {
 215         char **ap, *dp;
 216
 217         dp = mh_xstrdup(cp);
 218         ap = brkstring (dp, " ", "\n");
 219         for (i = 0; ap && *ap; i++, ap++)
 220             ivector_push_back (seqnum, seq_getnum (mp, *ap));
 221
 222         num_unseen_seq = i;
 223         mh_xfree(dp);
 224     }
 225
 226     ontty = isatty (fileno (stdout));
 227
 228     for (msgnum = revflag ? mp->hghsel : mp->lowsel;
 229          (revflag ? msgnum >= mp->lowsel : msgnum <= mp->hghsel);
 230          msgnum += (revflag ? -1 : 1)) {
 231         if (is_selected(mp, msgnum)) {
 232             charstring_t scanl = NULL;
 233
 234             if ((in = fopen (cp = m_name (msgnum), "r")) == NULL) {
 235                     admonish (cp, "unable to open message");
 236                 continue;
 237             }
 238
 239             if (hdrflag) {
 240                 printf ("FOLDER %s\t%s\n", folder, dtimenow(1));
 241             }
 242
 243             /*
 244              * Check if message is in any sequence given
 245              * by Unseen-Sequence profile entry.
 246              */
 247             unseen = 0;
 248             for (i = 0; i < num_unseen_seq; i++) {
 249                 if (in_sequence(mp, ivector_at (seqnum, i), msgnum)) {
 250                     unseen = 1;
 251                     break;
 252                 }
 253             }
 254
 255             switch (state = scan (in, msgnum, 0, nfs, width,
 256                         msgnum == mp->curmsg, unseen,
 257                         folder, 0L, 1, &scanl)) {
 258                 case SCNMSG:
 259                 case SCNENC:
 260                 case SCNERR:
 261                     break;
 262
 263                 default:
 264                     adios (NULL, "scan() botch (%d)", state);
 265
 266                 case SCNEOF:
 267                     inform("message %d: empty", msgnum);
 268                     break;
 269             }
 270             charstring_free (scanl);
 271             scan_finished ();
 272             hdrflag = 0;
 273             fclose (in);
 274             if (ontty)
 275                 fflush (stdout);
 276         }
 277     }
 278
 279     ivector_free (seqnum);
 280     folder_free (mp);   /* free folder/message structure */
 281     if (clearflag)
 282         nmh_clear_screen ();
 283
 284     done (0);
 285     return 1;
 286 }