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 "sbr/path.h"
  10 #include "sbr/print_version.h"
  11 #include "sbr/print_help.h"
  12 #include "sbr/seq_getnum.h"
  13 #include "sbr/error.h"
  14 #include "h/fmt_scan.h"
  15 #include "h/scansbr.h"
  16 #include "h/tws.h"
  17 #include "h/mts.h"
  18 #include "h/done.h"
  19 #include "h/utils.h"
  20 #include "sbr/m_maildir.h"
  21 #include "sbr/terminal.h"
  22
  23 #define SCAN_SWITCHES \
  24     X("clear", 0, CLRSW) \
  25     X("noclear", 0, NCLRSW) \
  26     X("form formatfile", 0, FORMSW) \
  27     X("format string", 5, FMTSW) \
  28     X("header", 0, HEADSW) \
  29     X("noheader", 0, NHEADSW) \
  30     X("width columns", 0, WIDTHSW) \
  31     X("reverse", 0, REVSW) \
  32     X("noreverse", 0, NREVSW) \
  33     X("file file", 4, FILESW) \
  34     X("version", 0, VERSIONSW) \
  35     X("help", 0, HELPSW) \
  36
  37 #define X(sw, minchars, id) id,
  38 DEFINE_SWITCH_ENUM(SCAN);
  39 #undef X
  40
  41 #define X(sw, minchars, id) { sw, minchars, id },
  42 DEFINE_SWITCH_ARRAY(SCAN, switches);
  43 #undef X
  44
  45
  46 int
  47 main (int argc, char **argv)
  48 {
  49     bool clearflag = false;
  50     bool hdrflag = false;
  51     int ontty;
  52     int width = -1;
  53     bool revflag = false;
  54     int i, state, msgnum;
  55     ivector_t seqnum = ivector_create (0);
  56     bool unseen;
  57     int num_unseen_seq = 0;
  58     char *cp, *maildir, *file = NULL, *folder = NULL;
  59     char *form = NULL, *format = NULL, buf[BUFSIZ];
  60     char **argp, *nfs, **arguments;
  61     struct msgs_array msgs = { 0, 0, NULL };
  62     struct msgs *mp;
  63     FILE *in;
  64
  65     if (nmh_init(argv[0], true, true)) { return 1; }
  66
  67     mts_init ();
  68     arguments = getarguments (invo_name, argc, argv, 1);
  69     argp = arguments;
  70
  71     /*
  72      * Parse arguments
  73      */
  74     while ((cp = *argp++)) {
  75         if (*cp == '-') {
  76             switch (smatch (++cp, switches)) {
  77                 case AMBIGSW:
  78                     ambigsw (cp, switches);
  79                     done (1);
  80                 case UNKWNSW:
  81                     die("-%s unknown", cp);
  82
  83                 case HELPSW:
  84                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  85                         invo_name);
  86                     print_help (buf, switches, 1);
  87                     done (0);
  88                 case VERSIONSW:
  89                     print_version(invo_name);
  90                     done (0);
  91
  92                 case CLRSW:
  93                     clearflag = true;
  94                     continue;
  95                 case NCLRSW:
  96                     clearflag = false;
  97                     continue;
  98
  99                 case FORMSW:
 100                     if (!(form = *argp++) || *form == '-')
 101                         die("missing argument to %s", argp[-2]);
 102                     format = NULL;
 103                     continue;
 104                 case FMTSW:
 105                     if (!(format = *argp++) || *format == '-')
 106                         die("missing argument to %s", argp[-2]);
 107                     form = NULL;
 108                     continue;
 109
 110                 case HEADSW:
 111                     hdrflag = true;
 112                     continue;
 113                 case NHEADSW:
 114                     hdrflag = false;
 115                     continue;
 116
 117                 case WIDTHSW:
 118                     if (!(cp = *argp++) || *cp == '-')
 119                         die("missing argument to %s", argp[-2]);
 120                     width = atoi (cp);
 121                     continue;
 122                 case REVSW:
 123                     revflag = true;
 124                     continue;
 125                 case NREVSW:
 126                     revflag = false;
 127                     continue;
 128
 129                 case FILESW:
 130                     if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
 131                         die("missing argument to %s", argp[-2]);
 132                     if (strcmp (file = cp, "-"))
 133                         file = path (cp, TFILE);
 134                     continue;
 135             }
 136         }
 137         if (*cp == '+' || *cp == '@') {
 138             if (folder)
 139                 die("only one folder at a time!");
 140             folder = pluspath (cp);
 141         } else
 142             app_msgarg(&msgs, cp);
 143     }
 144
 145     if (!context_find ("path"))
 146         free (path ("./", TFOLDER));
 147
 148     /*
 149      * Get new format string.  Must be before chdir().
 150      */
 151     nfs = new_fs (form, format, FORMAT);
 152
 153     /*
 154      * We are scanning a maildrop file
 155      */
 156     if (file) {
 157         if (msgs.size)
 158             die("\"msgs\" not allowed with -file");
 159         if (folder)
 160             die("\"+folder\" not allowed with -file");
 161
 162         /* check if "file" is really stdin */
 163         if (strcmp (file, "-") == 0) {
 164             in = stdin;
 165             file = "stdin";
 166         } else {
 167             if ((in = fopen (file, "r")) == NULL)
 168                 adios (file, "unable to open");
 169         }
 170
 171         if (hdrflag) {
 172             printf ("FOLDER %s\t%s\n", file, dtimenow (1));
 173         }
 174
 175         scan_detect_mbox_style (in);
 176         for (msgnum = 1; ; ++msgnum) {
 177             charstring_t scanl = NULL;
 178
 179             state = scan (in, msgnum, -1, nfs, width, 0, 0,
 180                           hdrflag ? file : NULL, 0L, 1, &scanl);
 181             charstring_free (scanl);
 182             if (state != SCNMSG && state != SCNENC)
 183                 break;
 184         }
 185         scan_finished ();
 186         fclose (in);
 187         done (0);
 188     }
 189
 190     /*
 191      * We are scanning a folder
 192      */
 193
 194     if (!msgs.size)
 195         app_msgarg(&msgs, "all");
 196     if (!folder)
 197         folder = getfolder (1);
 198     maildir = m_maildir (folder);
 199
 200     if (chdir (maildir) == NOTOK)
 201         adios (maildir, "unable to change directory to");
 202
 203     /* read folder and create message structure */
 204     if (!(mp = folder_read (folder, 1)))
 205         die("unable to read folder %s", folder);
 206
 207     /* check for empty folder */
 208     if (mp->nummsg == 0)
 209         die("no messages in %s", folder);
 210
 211     /* parse all the message ranges/sequences and set SELECTED */
 212     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 213         if (!m_convert (mp, msgs.msgs[msgnum]))
 214             done(1);
 215     seq_setprev (mp);                   /* set the Previous-Sequence */
 216
 217     context_replace (pfolder, folder);  /* update current folder         */
 218     seq_save (mp);                      /* synchronize message sequences */
 219     context_save ();                    /* save the context file         */
 220
 221     /*
 222      * Get the sequence number for each sequence
 223      * specified by Unseen-Sequence
 224      */
 225     if ((cp = context_find (usequence)) && *cp) {
 226         char **ap, *dp;
 227
 228         dp = mh_xstrdup(cp);
 229         ap = brkstring (dp, " ", "\n");
 230         for (i = 0; ap && *ap; i++, ap++)
 231             ivector_push_back (seqnum, seq_getnum (mp, *ap));
 232
 233         num_unseen_seq = i;
 234         free(dp);
 235     }
 236
 237     ontty = isatty (fileno (stdout));
 238
 239     for (msgnum = revflag ? mp->hghsel : mp->lowsel;
 240          (revflag ? msgnum >= mp->lowsel : msgnum <= mp->hghsel);
 241          msgnum += (revflag ? -1 : 1)) {
 242         if (is_selected(mp, msgnum)) {
 243             charstring_t scanl = NULL;
 244
 245             if ((in = fopen (cp = m_name (msgnum), "r")) == NULL) {
 246                     admonish (cp, "unable to open message");
 247                 continue;
 248             }
 249
 250             if (hdrflag) {
 251                 printf ("FOLDER %s\t%s\n", folder, dtimenow(1));
 252             }
 253
 254             /*
 255              * Check if message is in any sequence given
 256              * by Unseen-Sequence profile entry.
 257              */
 258             unseen = false;
 259             for (i = 0; i < num_unseen_seq; i++) {
 260                 if (in_sequence(mp, ivector_at (seqnum, i), msgnum)) {
 261                     unseen = true;
 262                     break;
 263                 }
 264             }
 265
 266             switch (state = scan (in, msgnum, 0, nfs, width,
 267                         msgnum == mp->curmsg, unseen,
 268                         folder, 0L, 1, &scanl)) {
 269                 case SCNMSG:
 270                 case SCNENC:
 271                 case SCNERR:
 272                     break;
 273
 274                 default:
 275                     die("scan() botch (%d)", state);
 276
 277                 case SCNEOF:
 278                     inform("message %d: empty", msgnum);
 279                     break;
 280             }
 281             charstring_free (scanl);
 282             scan_finished ();
 283             hdrflag = false;
 284             fclose (in);
 285             if (ontty)
 286                 fflush (stdout);
 287         }
 288     }
 289
 290     ivector_free (seqnum);
 291     folder_free (mp);   /* free folder/message structure */
 292     if (clearflag)
 293         nmh_clear_screen ();
 294
 295     done (0);
 296     return 1;
 297 }