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