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     bool clearflag = false;
  45     bool hdrflag = false;
  46     int ontty;
  47     int width = -1;
  48     bool revflag = false;
  49     int i, state, msgnum;
  50     ivector_t seqnum = ivector_create (0);
  51     bool unseen;
  52     int num_unseen_seq = 0;
  53     char *cp, *maildir, *file = NULL, *folder = NULL;
  54     char *form = NULL, *format = NULL, buf[BUFSIZ];
  55     char **argp, *nfs, **arguments;
  56     struct msgs_array msgs = { 0, 0, NULL };
  57     struct msgs *mp;
  58     FILE *in;
  59
  60     if (nmh_init(argv[0], true, true)) { return 1; }
  61
  62     mts_init ();
  63     arguments = getarguments (invo_name, argc, argv, 1);
  64     argp = arguments;
  65
  66     /*
  67      * Parse arguments
  68      */
  69     while ((cp = *argp++)) {
  70         if (*cp == '-') {
  71             switch (smatch (++cp, switches)) {
  72                 case AMBIGSW:
  73                     ambigsw (cp, switches);
  74                     done (1);
  75                 case UNKWNSW:
  76                     die("-%s unknown", cp);
  77
  78                 case HELPSW:
  79                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  80                         invo_name);
  81                     print_help (buf, switches, 1);
  82                     done (0);
  83                 case VERSIONSW:
  84                     print_version(invo_name);
  85                     done (0);
  86
  87                 case CLRSW:
  88                     clearflag = true;
  89                     continue;
  90                 case NCLRSW:
  91                     clearflag = false;
  92                     continue;
  93
  94                 case FORMSW:
  95                     if (!(form = *argp++) || *form == '-')
  96                         die("missing argument to %s", argp[-2]);
  97                     format = NULL;
  98                     continue;
  99                 case FMTSW:
 100                     if (!(format = *argp++) || *format == '-')
 101                         die("missing argument to %s", argp[-2]);
 102                     form = NULL;
 103                     continue;
 104
 105                 case HEADSW:
 106                     hdrflag = true;
 107                     continue;
 108                 case NHEADSW:
 109                     hdrflag = false;
 110                     continue;
 111
 112                 case WIDTHSW:
 113                     if (!(cp = *argp++) || *cp == '-')
 114                         die("missing argument to %s", argp[-2]);
 115                     width = atoi (cp);
 116                     continue;
 117                 case REVSW:
 118                     revflag = true;
 119                     continue;
 120                 case NREVSW:
 121                     revflag = false;
 122                     continue;
 123
 124                 case FILESW:
 125                     if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
 126                         die("missing argument to %s", argp[-2]);
 127                     if (strcmp (file = cp, "-"))
 128                         file = path (cp, TFILE);
 129                     continue;
 130             }
 131         }
 132         if (*cp == '+' || *cp == '@') {
 133             if (folder)
 134                 die("only one folder at a time!");
 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             die("\"msgs\" not allowed with -file");
 154         if (folder)
 155             die("\"+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             charstring_t scanl = NULL;
 173
 174             state = scan (in, msgnum, -1, nfs, width, 0, 0,
 175                           hdrflag ? file : NULL, 0L, 1, &scanl);
 176             charstring_free (scanl);
 177             if (state != SCNMSG && state != SCNENC)
 178                 break;
 179         }
 180         scan_finished ();
 181         fclose (in);
 182         done (0);
 183     }
 184
 185     /*
 186      * We are scanning a folder
 187      */
 188
 189     if (!msgs.size)
 190         app_msgarg(&msgs, "all");
 191     if (!folder)
 192         folder = getfolder (1);
 193     maildir = m_maildir (folder);
 194
 195     if (chdir (maildir) == NOTOK)
 196         adios (maildir, "unable to change directory to");
 197
 198     /* read folder and create message structure */
 199     if (!(mp = folder_read (folder, 1)))
 200         die("unable to read folder %s", folder);
 201
 202     /* check for empty folder */
 203     if (mp->nummsg == 0)
 204         die("no messages in %s", folder);
 205
 206     /* parse all the message ranges/sequences and set SELECTED */
 207     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 208         if (!m_convert (mp, msgs.msgs[msgnum]))
 209             done(1);
 210     seq_setprev (mp);                   /* set the Previous-Sequence */
 211
 212     context_replace (pfolder, folder);  /* update current folder         */
 213     seq_save (mp);                      /* synchronize message sequences */
 214     context_save ();                    /* save the context file         */
 215
 216     /*
 217      * Get the sequence number for each sequence
 218      * specified by Unseen-Sequence
 219      */
 220     if ((cp = context_find (usequence)) && *cp) {
 221         char **ap, *dp;
 222
 223         dp = mh_xstrdup(cp);
 224         ap = brkstring (dp, " ", "\n");
 225         for (i = 0; ap && *ap; i++, ap++)
 226             ivector_push_back (seqnum, seq_getnum (mp, *ap));
 227
 228         num_unseen_seq = i;
 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             charstring_t scanl = NULL;
 239
 240             if ((in = fopen (cp = m_name (msgnum), "r")) == NULL) {
 241                     admonish (cp, "unable to open message");
 242                 continue;
 243             }
 244
 245             if (hdrflag) {
 246                 printf ("FOLDER %s\t%s\n", folder, dtimenow(1));
 247             }
 248
 249             /*
 250              * Check if message is in any sequence given
 251              * by Unseen-Sequence profile entry.
 252              */
 253             unseen = false;
 254             for (i = 0; i < num_unseen_seq; i++) {
 255                 if (in_sequence(mp, ivector_at (seqnum, i), msgnum)) {
 256                     unseen = true;
 257                     break;
 258                 }
 259             }
 260
 261             switch (state = scan (in, msgnum, 0, nfs, width,
 262                         msgnum == mp->curmsg, unseen,
 263                         folder, 0L, 1, &scanl)) {
 264                 case SCNMSG:
 265                 case SCNENC:
 266                 case SCNERR:
 267                     break;
 268
 269                 default:
 270                     die("scan() botch (%d)", state);
 271
 272                 case SCNEOF:
 273                     inform("message %d: empty", msgnum);
 274                     break;
 275             }
 276             charstring_free (scanl);
 277             scan_finished ();
 278             hdrflag = false;
 279             fclose (in);
 280             if (ontty)
 281                 fflush (stdout);
 282         }
 283     }
 284
 285     ivector_free (seqnum);
 286     folder_free (mp);   /* free folder/message structure */
 287     if (clearflag)
 288         nmh_clear_screen ();
 289
 290     done (0);
 291     return 1;
 292 }