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 /*
  41  * prototypes
  42  */
  43 void clear_screen(void);  /* from termsbr.c */
  44
  45
  46 int
  47 main (int argc, char **argv)
  48 {
  49     int clearflag = 0, hdrflag = 0, ontty;
  50     int width = 0, revflag = 0;
  51     int i, state, msgnum;
  52     ivector_t seqnum = ivector_create (0);
  53     int unseen, num_unseen_seq = 0;
  54     char *cp, *maildir, *file = NULL, *folder = NULL;
  55     char *form = NULL, *format = NULL, buf[BUFSIZ];
  56     char **argp, *nfs, **arguments;
  57     struct msgs_array msgs = { 0, 0, NULL };
  58     struct msgs *mp;
  59     FILE *in;
  60
  61 #ifdef LOCALE
  62     setlocale(LC_ALL, "");
  63 #endif
  64     invo_name = r1bindex (argv[0], '/');
  65
  66     /* read user profile/context */
  67     context_read();
  68
  69     mts_init (invo_name);
  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                     adios (NULL, "-%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++;
  96                     continue;
  97                 case NCLRSW:
  98                     clearflag = 0;
  99                     continue;
 100
 101                 case FORMSW:
 102                     if (!(form = *argp++) || *form == '-')
 103                         adios (NULL, "missing argument to %s", argp[-2]);
 104                     format = NULL;
 105                     continue;
 106                 case FMTSW:
 107                     if (!(format = *argp++) || *format == '-')
 108                         adios (NULL, "missing argument to %s", argp[-2]);
 109                     form = NULL;
 110                     continue;
 111
 112                 case HEADSW:
 113                     hdrflag++;
 114                     continue;
 115                 case NHEADSW:
 116                     hdrflag = 0;
 117                     continue;
 118
 119                 case WIDTHSW:
 120                     if (!(cp = *argp++) || *cp == '-')
 121                         adios (NULL, "missing argument to %s", argp[-2]);
 122                     width = atoi (cp);
 123                     continue;
 124                 case REVSW:
 125                     revflag++;
 126                     continue;
 127                 case NREVSW:
 128                     revflag = 0;
 129                     continue;
 130
 131                 case FILESW:
 132                     if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
 133                         adios (NULL, "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                 adios (NULL, "only one folder at a time!");
 142             else
 143                 folder = pluspath (cp);
 144         } else
 145                 app_msgarg(&msgs, cp);
 146     }
 147
 148     if (!context_find ("path"))
 149         free (path ("./", TFOLDER));
 150
 151     /*
 152      * Get new format string.  Must be before chdir().
 153      */
 154     nfs = new_fs (form, format, FORMAT);
 155
 156     /*
 157      * We are scanning a maildrop file
 158      */
 159     if (file) {
 160         if (msgs.size)
 161             adios (NULL, "\"msgs\" not allowed with -file");
 162         if (folder)
 163             adios (NULL, "\"+folder\" not allowed with -file");
 164
 165         /* check if "file" is really stdin */
 166         if (strcmp (file, "-") == 0) {
 167             in = stdin;
 168             file = "stdin";
 169         } else {
 170             if ((in = fopen (file, "r")) == NULL)
 171                 adios (file, "unable to open");
 172         }
 173
 174         if (hdrflag) {
 175             printf ("FOLDER %s\t%s\n", file, dtimenow (1));
 176         }
 177
 178         scan_detect_mbox_style (in);
 179         for (msgnum = 1; ; ++msgnum) {
 180             state = scan (in, msgnum, -1, nfs, width, 0, 0,
 181                     hdrflag ? file : NULL, 0L, 1);
 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         adios (NULL, "unable to read folder %s", folder);
 206
 207     /* check for empty folder */
 208     if (mp->nummsg == 0)
 209         adios (NULL, "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 = getcpy(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         if (dp)
 235             free(dp);
 236     }
 237
 238     ontty = isatty (fileno (stdout));
 239
 240     for (msgnum = revflag ? mp->hghsel : mp->lowsel;
 241          (revflag ? msgnum >= mp->lowsel : msgnum <= mp->hghsel);
 242          msgnum += (revflag ? -1 : 1)) {
 243         if (is_selected(mp, msgnum)) {
 244             if ((in = fopen (cp = m_name (msgnum), "r")) == NULL) {
 245                     admonish (cp, "unable to open message");
 246                 continue;
 247             }
 248
 249             if (hdrflag) {
 250                 printf ("FOLDER %s\t%s\n", folder, dtimenow(1));
 251             }
 252
 253             /*
 254              * Check if message is in any sequence given
 255              * by Unseen-Sequence profile entry.
 256              */
 257             unseen = 0;
 258             for (i = 0; i < num_unseen_seq; i++) {
 259                 if (in_sequence(mp, ivector_at (seqnum, i), msgnum)) {
 260                     unseen = 1;
 261                     break;
 262                 }
 263             }
 264
 265             switch (state = scan (in, msgnum, 0, nfs, width,
 266                         msgnum == mp->curmsg, unseen,
 267                         folder, 0L, 1)) {
 268                 case SCNMSG:
 269                 case SCNENC:
 270                 case SCNERR:
 271                     break;
 272
 273                 default:
 274                     adios (NULL, "scan() botch (%d)", state);
 275
 276                 case SCNEOF:
 277                     advise (NULL, "message %d: empty", msgnum);
 278                     break;
 279             }
 280             scan_finished ();
 281             hdrflag = 0;
 282             fclose (in);
 283             if (ontty)
 284                 fflush (stdout);
 285         }
 286     }
 287
 288     ivector_free (seqnum);
 289     folder_free (mp);   /* free folder/message structure */
 290     if (clearflag)
 291         clear_screen ();
 292
 293     done (0);
 294     return 1;
 295 }