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

   1
   2 /*
   3  * scan.c -- display a one-line "scan" listing of folder or messages
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <h/fmt_scan.h>
  12 #include <h/scansbr.h>
  13 #include <h/tws.h>
  14 #include <h/mts.h>
  15 #include <h/utils.h>
  16
  17 #define SCAN_SWITCHES \
  18     X("clear", 0, CLRSW) \
  19     X("noclear", 0, NCLRSW) \
  20     X("form formatfile", 0, FORMSW) \
  21     X("format string", 5, FMTSW) \
  22     X("header", 0, HEADSW) \
  23     X("noheader", 0, NHEADSW) \
  24     X("width columns", 0, WIDTHSW) \
  25     X("reverse", 0, REVSW) \
  26     X("noreverse", 0, NREVSW) \
  27     X("file file", 4, FILESW) \
  28     X("version", 0, VERSIONSW) \
  29     X("help", 0, HELPSW) \
  30
  31 #define X(sw, minchars, id) id,
  32 DEFINE_SWITCH_ENUM(SCAN);
  33 #undef X
  34
  35 #define X(sw, minchars, id) { sw, minchars, id },
  36 DEFINE_SWITCH_ARRAY(SCAN, switches);
  37 #undef X
  38
  39
  40 int
  41 main (int argc, char **argv)
  42 {
  43     int clearflag = 0, hdrflag = 0, ontty;
  44     int width = 0, revflag = 0;
  45     int i, state, msgnum;
  46     ivector_t seqnum = ivector_create (0);
  47     int unseen, num_unseen_seq = 0;
  48     char *cp, *maildir, *file = NULL, *folder = NULL;
  49     char *form = NULL, *format = NULL, buf[BUFSIZ];
  50     char **argp, *nfs, **arguments;
  51     struct msgs_array msgs = { 0, 0, NULL };
  52     struct msgs *mp;
  53     FILE *in;
  54
  55 #ifdef LOCALE
  56     setlocale(LC_ALL, "");
  57 #endif
  58     invo_name = r1bindex (argv[0], '/');
  59
  60     /* read user profile/context */
  61     context_read();
  62
  63     mts_init (invo_name);
  64     arguments = getarguments (invo_name, argc, argv, 1);
  65     argp = arguments;
  66
  67     /*
  68      * Parse arguments
  69      */
  70     while ((cp = *argp++)) {
  71         if (*cp == '-') {
  72             switch (smatch (++cp, switches)) {
  73                 case AMBIGSW:
  74                     ambigsw (cp, switches);
  75                     done (1);
  76                 case UNKWNSW:
  77                     adios (NULL, "-%s unknown", cp);
  78
  79                 case HELPSW:
  80                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  81                         invo_name);
  82                     print_help (buf, switches, 1);
  83                     done (0);
  84                 case VERSIONSW:
  85                     print_version(invo_name);
  86                     done (0);
  87
  88                 case CLRSW:
  89                     clearflag++;
  90                     continue;
  91                 case NCLRSW:
  92                     clearflag = 0;
  93                     continue;
  94
  95                 case FORMSW:
  96                     if (!(form = *argp++) || *form == '-')
  97                         adios (NULL, "missing argument to %s", argp[-2]);
  98                     format = NULL;
  99                     continue;
 100                 case FMTSW:
 101                     if (!(format = *argp++) || *format == '-')
 102                         adios (NULL, "missing argument to %s", argp[-2]);
 103                     form = NULL;
 104                     continue;
 105
 106                 case HEADSW:
 107                     hdrflag++;
 108                     continue;
 109                 case NHEADSW:
 110                     hdrflag = 0;
 111                     continue;
 112
 113                 case WIDTHSW:
 114                     if (!(cp = *argp++) || *cp == '-')
 115                         adios (NULL, "missing argument to %s", argp[-2]);
 116                     width = atoi (cp);
 117                     continue;
 118                 case REVSW:
 119                     revflag++;
 120                     continue;
 121                 case NREVSW:
 122                     revflag = 0;
 123                     continue;
 124
 125                 case FILESW:
 126                     if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
 127                         adios (NULL, "missing argument to %s", argp[-2]);
 128                     if (strcmp (file = cp, "-"))
 129                         file = path (cp, TFILE);
 130                     continue;
 131             }
 132         }
 133         if (*cp == '+' || *cp == '@') {
 134             if (folder)
 135                 adios (NULL, "only one folder at a time!");
 136             else
 137                 folder = pluspath (cp);
 138         } else
 139                 app_msgarg(&msgs, cp);
 140     }
 141
 142     if (!context_find ("path"))
 143         free (path ("./", TFOLDER));
 144
 145     /*
 146      * Get new format string.  Must be before chdir().
 147      */
 148     nfs = new_fs (form, format, FORMAT);
 149
 150     /*
 151      * We are scanning a maildrop file
 152      */
 153     if (file) {
 154         if (msgs.size)
 155             adios (NULL, "\"msgs\" not allowed with -file");
 156         if (folder)
 157             adios (NULL, "\"+folder\" not allowed with -file");
 158
 159         /* check if "file" is really stdin */
 160         if (strcmp (file, "-") == 0) {
 161             in = stdin;
 162             file = "stdin";
 163         } else {
 164             if ((in = fopen (file, "r")) == NULL)
 165                 adios (file, "unable to open");
 166         }
 167
 168         if (hdrflag) {
 169             printf ("FOLDER %s\t%s\n", file, dtimenow (1));
 170         }
 171
 172         scan_detect_mbox_style (in);
 173         for (msgnum = 1; ; ++msgnum) {
 174             state = scan (in, msgnum, -1, nfs, width, 0, 0,
 175                     hdrflag ? file : NULL, 0L, 1);
 176             if (state != SCNMSG && state != SCNENC)
 177                 break;
 178         }
 179         scan_finished ();
 180         fclose (in);
 181         done (0);
 182     }
 183
 184     /*
 185      * We are scanning a folder
 186      */
 187
 188     if (!msgs.size)
 189         app_msgarg(&msgs, "all");
 190     if (!folder)
 191         folder = getfolder (1);
 192     maildir = m_maildir (folder);
 193
 194     if (chdir (maildir) == NOTOK)
 195         adios (maildir, "unable to change directory to");
 196
 197     /* read folder and create message structure */
 198     if (!(mp = folder_read (folder, 1)))
 199         adios (NULL, "unable to read folder %s", folder);
 200
 201     /* check for empty folder */
 202     if (mp->nummsg == 0)
 203         adios (NULL, "no messages in %s", folder);
 204
 205     /* parse all the message ranges/sequences and set SELECTED */
 206     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 207         if (!m_convert (mp, msgs.msgs[msgnum]))
 208             done(1);
 209     seq_setprev (mp);                   /* set the Previous-Sequence */
 210
 211     context_replace (pfolder, folder);  /* update current folder         */
 212     seq_save (mp);                      /* synchronize message sequences */
 213     context_save ();                    /* save the context file         */
 214
 215     /*
 216      * Get the sequence number for each sequence
 217      * specified by Unseen-Sequence
 218      */
 219     if ((cp = context_find (usequence)) && *cp) {
 220         char **ap, *dp;
 221
 222         dp = getcpy(cp);
 223         ap = brkstring (dp, " ", "\n");
 224         for (i = 0; ap && *ap; i++, ap++)
 225             ivector_push_back (seqnum, seq_getnum (mp, *ap));
 226
 227         num_unseen_seq = i;
 228         if (dp)
 229             free(dp);
 230     }
 231
 232     ontty = isatty (fileno (stdout));
 233
 234     for (msgnum = revflag ? mp->hghsel : mp->lowsel;
 235          (revflag ? msgnum >= mp->lowsel : msgnum <= mp->hghsel);
 236          msgnum += (revflag ? -1 : 1)) {
 237         if (is_selected(mp, msgnum)) {
 238             if ((in = fopen (cp = m_name (msgnum), "r")) == NULL) {
 239                     admonish (cp, "unable to open message");
 240                 continue;
 241             }
 242
 243             if (hdrflag) {
 244                 printf ("FOLDER %s\t%s\n", folder, dtimenow(1));
 245             }
 246
 247             /*
 248              * Check if message is in any sequence given
 249              * by Unseen-Sequence profile entry.
 250              */
 251             unseen = 0;
 252             for (i = 0; i < num_unseen_seq; i++) {
 253                 if (in_sequence(mp, ivector_at (seqnum, i), msgnum)) {
 254                     unseen = 1;
 255                     break;
 256                 }
 257             }
 258
 259             switch (state = scan (in, msgnum, 0, nfs, width,
 260                         msgnum == mp->curmsg, unseen,
 261                         folder, 0L, 1)) {
 262                 case SCNMSG:
 263                 case SCNENC:
 264                 case SCNERR:
 265                     break;
 266
 267                 default:
 268                     adios (NULL, "scan() botch (%d)", state);
 269
 270                 case SCNEOF:
 271                     advise (NULL, "message %d: empty", msgnum);
 272                     break;
 273             }
 274             scan_finished ();
 275             hdrflag = 0;
 276             fclose (in);
 277             if (ontty)
 278                 fflush (stdout);
 279         }
 280     }
 281
 282     ivector_free (seqnum);
 283     folder_free (mp);   /* free folder/message structure */
 284     if (clearflag)
 285         nmh_clear_screen ();
 286
 287     done (0);
 288     return 1;
 289 }