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/brkstring.h"
  10 #include "sbr/ambigsw.h"
  11 #include "sbr/path.h"
  12 #include "sbr/print_version.h"
  13 #include "sbr/print_help.h"
  14 #include "sbr/seq_getnum.h"
  15 #include "sbr/error.h"
  16 #include "h/fmt_scan.h"
  17 #include "h/scansbr.h"
  18 #include "h/tws.h"
  19 #include "h/mts.h"
  20 #include "h/done.h"
  21 #include "h/utils.h"
  22 #include "sbr/m_maildir.h"
  23 #include "sbr/terminal.h"
  24
  25 #define SCAN_SWITCHES \
  26     X("clear", 0, CLRSW) \
  27     X("noclear", 0, NCLRSW) \
  28     X("form formatfile", 0, FORMSW) \
  29     X("format string", 5, FMTSW) \
  30     X("header", 0, HEADSW) \
  31     X("noheader", 0, NHEADSW) \
  32     X("width columns", 0, WIDTHSW) \
  33     X("reverse", 0, REVSW) \
  34     X("noreverse", 0, NREVSW) \
  35     X("file file", 4, FILESW) \
  36     X("version", 0, VERSIONSW) \
  37     X("help", 0, HELPSW) \
  38
  39 #define X(sw, minchars, id) id,
  40 DEFINE_SWITCH_ENUM(SCAN);
  41 #undef X
  42
  43 #define X(sw, minchars, id) { sw, minchars, id },
  44 DEFINE_SWITCH_ARRAY(SCAN, switches);
  45 #undef X
  46
  47
  48 int
  49 main (int argc, char **argv)
  50 {
  51     bool clearflag = false;
  52     bool hdrflag = false;
  53     int ontty;
  54     int width = -1;
  55     bool revflag = false;
  56     int i, state, msgnum;
  57     ivector_t seqnum = ivector_create (0);
  58     bool unseen;
  59     int num_unseen_seq = 0;
  60     char *cp, *maildir, *file = NULL, *folder = NULL;
  61     char *form = NULL, *format = NULL, buf[BUFSIZ];
  62     char **argp, *nfs, **arguments;
  63     struct msgs_array msgs = { 0, 0, NULL };
  64     struct msgs *mp;
  65     FILE *in;
  66
  67     if (nmh_init(argv[0], true, true)) { return 1; }
  68
  69     mts_init ();
  70     arguments = getarguments (invo_name, argc, argv, 1);
  71     argp = arguments;
  72
  73     /*
  74      * Parse arguments
  75      */
  76     while ((cp = *argp++)) {
  77         if (*cp == '-') {
  78             switch (smatch (++cp, switches)) {
  79                 case AMBIGSW:
  80                     ambigsw (cp, switches);
  81                     done (1);
  82                 case UNKWNSW:
  83                     die("-%s unknown", cp);
  84
  85                 case HELPSW:
  86                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  87                         invo_name);
  88                     print_help (buf, switches, 1);
  89                     done (0);
  90                 case VERSIONSW:
  91                     print_version(invo_name);
  92                     done (0);
  93
  94                 case CLRSW:
  95                     clearflag = true;
  96                     continue;
  97                 case NCLRSW:
  98                     clearflag = false;
  99                     continue;
 100
 101                 case FORMSW:
 102                     if (!(form = *argp++) || *form == '-')
 103                         die("missing argument to %s", argp[-2]);
 104                     format = NULL;
 105                     continue;
 106                 case FMTSW:
 107                     if (!(format = *argp++) || *format == '-')
 108                         die("missing argument to %s", argp[-2]);
 109                     form = NULL;
 110                     continue;
 111
 112                 case HEADSW:
 113                     hdrflag = true;
 114                     continue;
 115                 case NHEADSW:
 116                     hdrflag = false;
 117                     continue;
 118
 119                 case WIDTHSW:
 120                     if (!(cp = *argp++) || *cp == '-')
 121                         die("missing argument to %s", argp[-2]);
 122                     width = atoi (cp);
 123                     continue;
 124                 case REVSW:
 125                     revflag = true;
 126                     continue;
 127                 case NREVSW:
 128                     revflag = false;
 129                     continue;
 130
 131                 case FILESW:
 132                     if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
 133                         die("missing argument to %s", argp[-2]);
 134                     if (strcmp (file = cp, "-"))
 135                         file = path (cp, TFILE);
 136                     continue;
 137             }
 138         }
 139         if (*cp == '+' || *cp == '@') {
 140             if (folder)
 141                 die("only one folder at a time!");
 142             folder = pluspath (cp);
 143         } else
 144             app_msgarg(&msgs, cp);
 145     }
 146
 147     if (!context_find ("path"))
 148         free (path ("./", TFOLDER));
 149
 150     /*
 151      * Get new format string.  Must be before chdir().
 152      */
 153     nfs = new_fs (form, format, FORMAT);
 154
 155     /*
 156      * We are scanning a maildrop file
 157      */
 158     if (file) {
 159         if (msgs.size)
 160             die("\"msgs\" not allowed with -file");
 161         if (folder)
 162             die("\"+folder\" not allowed with -file");
 163
 164         /* check if "file" is really stdin */
 165         if (strcmp (file, "-") == 0) {
 166             in = stdin;
 167             file = "stdin";
 168         } else {
 169             if ((in = fopen (file, "r")) == NULL)
 170                 adios (file, "unable to open");
 171         }
 172
 173         if (hdrflag) {
 174             printf ("FOLDER %s\t%s\n", file, dtimenow (1));
 175         }
 176
 177         scan_detect_mbox_style (in);
 178         for (msgnum = 1; ; ++msgnum) {
 179             charstring_t scanl = NULL;
 180
 181             state = scan (in, msgnum, -1, nfs, width, 0, 0,
 182                           hdrflag ? file : NULL, 0L, 1, &scanl);
 183             charstring_free (scanl);
 184             if (state != SCNMSG && state != SCNENC)
 185                 break;
 186         }
 187         scan_finished ();
 188         fclose (in);
 189         done (0);
 190     }
 191
 192     /*
 193      * We are scanning a folder
 194      */
 195
 196     if (!msgs.size)
 197         app_msgarg(&msgs, "all");
 198     if (!folder)
 199         folder = getfolder (1);
 200     maildir = m_maildir (folder);
 201
 202     if (chdir (maildir) == NOTOK)
 203         adios (maildir, "unable to change directory to");
 204
 205     /* read folder and create message structure */
 206     if (!(mp = folder_read (folder, 1)))
 207         die("unable to read folder %s", folder);
 208
 209     /* check for empty folder */
 210     if (mp->nummsg == 0)
 211         die("no messages in %s", folder);
 212
 213     /* parse all the message ranges/sequences and set SELECTED */
 214     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 215         if (!m_convert (mp, msgs.msgs[msgnum]))
 216             done(1);
 217     seq_setprev (mp);                   /* set the Previous-Sequence */
 218
 219     context_replace (pfolder, folder);  /* update current folder         */
 220     seq_save (mp);                      /* synchronize message sequences */
 221     context_save ();                    /* save the context file         */
 222
 223     /*
 224      * Get the sequence number for each sequence
 225      * specified by Unseen-Sequence
 226      */
 227     if ((cp = context_find (usequence)) && *cp) {
 228         char **ap, *dp;
 229
 230         dp = mh_xstrdup(cp);
 231         ap = brkstring (dp, " ", "\n");
 232         for (i = 0; ap && *ap; i++, ap++)
 233             ivector_push_back (seqnum, seq_getnum (mp, *ap));
 234
 235         num_unseen_seq = i;
 236         free(dp);
 237     }
 238
 239     ontty = isatty (fileno (stdout));
 240
 241     for (msgnum = revflag ? mp->hghsel : mp->lowsel;
 242          (revflag ? msgnum >= mp->lowsel : msgnum <= mp->hghsel);
 243          msgnum += (revflag ? -1 : 1)) {
 244         if (is_selected(mp, msgnum)) {
 245             charstring_t scanl = NULL;
 246
 247             if ((in = fopen (cp = m_name (msgnum), "r")) == NULL) {
 248                     admonish (cp, "unable to open message");
 249                 continue;
 250             }
 251
 252             if (hdrflag) {
 253                 printf ("FOLDER %s\t%s\n", folder, dtimenow(1));
 254             }
 255
 256             /*
 257              * Check if message is in any sequence given
 258              * by Unseen-Sequence profile entry.
 259              */
 260             unseen = false;
 261             for (i = 0; i < num_unseen_seq; i++) {
 262                 if (in_sequence(mp, ivector_at (seqnum, i), msgnum)) {
 263                     unseen = true;
 264                     break;
 265                 }
 266             }
 267
 268             switch (state = scan (in, msgnum, 0, nfs, width,
 269                         msgnum == mp->curmsg, unseen,
 270                         folder, 0L, 1, &scanl)) {
 271                 case SCNMSG:
 272                 case SCNENC:
 273                 case SCNERR:
 274                     break;
 275
 276                 default:
 277                     die("scan() botch (%d)", state);
 278
 279                 case SCNEOF:
 280                     inform("message %d: empty", msgnum);
 281                     break;
 282             }
 283             charstring_free (scanl);
 284             scan_finished ();
 285             hdrflag = false;
 286             fclose (in);
 287             if (ontty)
 288                 fflush (stdout);
 289         }
 290     }
 291
 292     ivector_free (seqnum);
 293     folder_free (mp);   /* free folder/message structure */
 294     if (clearflag)
 295         nmh_clear_screen ();
 296
 297     done (0);
 298     return 1;
 299 }