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