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/context_find.h"
  10 #include "sbr/brkstring.h"
  11 #include "sbr/ambigsw.h"
  12 #include "sbr/path.h"
  13 #include "sbr/print_version.h"
  14 #include "sbr/print_help.h"
  15 #include "sbr/seq_getnum.h"
  16 #include "sbr/error.h"
  17 #include "h/fmt_scan.h"
  18 #include "h/scansbr.h"
  19 #include "h/tws.h"
  20 #include "h/mts.h"
  21 #include "h/done.h"
  22 #include "h/utils.h"
  23 #include "sbr/m_maildir.h"
  24 #include "sbr/terminal.h"
  25
  26 #define SCAN_SWITCHES \
  27     X("clear", 0, CLRSW) \
  28     X("noclear", 0, NCLRSW) \
  29     X("form formatfile", 0, FORMSW) \
  30     X("format string", 5, FMTSW) \
  31     X("header", 0, HEADSW) \
  32     X("noheader", 0, NHEADSW) \
  33     X("width columns", 0, WIDTHSW) \
  34     X("reverse", 0, REVSW) \
  35     X("noreverse", 0, NREVSW) \
  36     X("file file", 4, FILESW) \
  37     X("version", 0, VERSIONSW) \
  38     X("help", 0, HELPSW) \
  39
  40 #define X(sw, minchars, id) id,
  41 DEFINE_SWITCH_ENUM(SCAN);
  42 #undef X
  43
  44 #define X(sw, minchars, id) { sw, minchars, id },
  45 DEFINE_SWITCH_ARRAY(SCAN, switches);
  46 #undef X
  47
  48
  49 int
  50 main (int argc, char **argv)
  51 {
  52     bool clearflag = false;
  53     bool hdrflag = false;
  54     int ontty;
  55     int width = -1;
  56     bool revflag = false;
  57     int i, state, msgnum;
  58     ivector_t seqnum = ivector_create (0);
  59     bool unseen;
  60     int num_unseen_seq = 0;
  61     char *cp, *maildir, *file = NULL, *folder = NULL;
  62     char *form = NULL, *format = NULL, buf[BUFSIZ];
  63     char **argp, *nfs, **arguments;
  64     struct msgs_array msgs = { 0, 0, NULL };
  65     struct msgs *mp;
  66     FILE *in;
  67
  68     if (nmh_init(argv[0], true, true)) { return 1; }
  69
  70     mts_init ();
  71     arguments = getarguments (invo_name, argc, argv, 1);
  72     argp = arguments;
  73
  74     /*
  75      * Parse arguments
  76      */
  77     while ((cp = *argp++)) {
  78         if (*cp == '-') {
  79             switch (smatch (++cp, switches)) {
  80                 case AMBIGSW:
  81                     ambigsw (cp, switches);
  82                     done (1);
  83                 case UNKWNSW:
  84                     die("-%s unknown", cp);
  85
  86                 case HELPSW:
  87                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  88                         invo_name);
  89                     print_help (buf, switches, 1);
  90                     done (0);
  91                 case VERSIONSW:
  92                     print_version(invo_name);
  93                     done (0);
  94
  95                 case CLRSW:
  96                     clearflag = true;
  97                     continue;
  98                 case NCLRSW:
  99                     clearflag = false;
 100                     continue;
 101
 102                 case FORMSW:
 103                     if (!(form = *argp++) || *form == '-')
 104                         die("missing argument to %s", argp[-2]);
 105                     format = NULL;
 106                     continue;
 107                 case FMTSW:
 108                     if (!(format = *argp++) || *format == '-')
 109                         die("missing argument to %s", argp[-2]);
 110                     form = NULL;
 111                     continue;
 112
 113                 case HEADSW:
 114                     hdrflag = true;
 115                     continue;
 116                 case NHEADSW:
 117                     hdrflag = false;
 118                     continue;
 119
 120                 case WIDTHSW:
 121                     if (!(cp = *argp++) || *cp == '-')
 122                         die("missing argument to %s", argp[-2]);
 123                     width = atoi (cp);
 124                     continue;
 125                 case REVSW:
 126                     revflag = true;
 127                     continue;
 128                 case NREVSW:
 129                     revflag = false;
 130                     continue;
 131
 132                 case FILESW:
 133                     if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
 134                         die("missing argument to %s", argp[-2]);
 135                     if (strcmp (file = cp, "-"))
 136                         file = path (cp, TFILE);
 137                     continue;
 138             }
 139         }
 140         if (*cp == '+' || *cp == '@') {
 141             if (folder)
 142                 die("only one folder at a time!");
 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             die("\"msgs\" not allowed with -file");
 162         if (folder)
 163             die("\"+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             charstring_t scanl = NULL;
 181
 182             state = scan (in, msgnum, -1, nfs, width, 0, 0,
 183                           hdrflag ? file : NULL, 0L, 1, &scanl);
 184             charstring_free (scanl);
 185             if (state != SCNMSG && state != SCNENC)
 186                 break;
 187         }
 188         scan_finished ();
 189         fclose (in);
 190         done (0);
 191     }
 192
 193     /*
 194      * We are scanning a folder
 195      */
 196
 197     if (!msgs.size)
 198         app_msgarg(&msgs, "all");
 199     if (!folder)
 200         folder = getfolder (1);
 201     maildir = m_maildir (folder);
 202
 203     if (chdir (maildir) == NOTOK)
 204         adios (maildir, "unable to change directory to");
 205
 206     /* read folder and create message structure */
 207     if (!(mp = folder_read (folder, 1)))
 208         die("unable to read folder %s", folder);
 209
 210     /* check for empty folder */
 211     if (mp->nummsg == 0)
 212         die("no messages in %s", folder);
 213
 214     /* parse all the message ranges/sequences and set SELECTED */
 215     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 216         if (!m_convert (mp, msgs.msgs[msgnum]))
 217             done(1);
 218     seq_setprev (mp);                   /* set the Previous-Sequence */
 219
 220     context_replace (pfolder, folder);  /* update current folder         */
 221     seq_save (mp);                      /* synchronize message sequences */
 222     context_save ();                    /* save the context file         */
 223
 224     /*
 225      * Get the sequence number for each sequence
 226      * specified by Unseen-Sequence
 227      */
 228     if ((cp = context_find (usequence)) && *cp) {
 229         char **ap, *dp;
 230
 231         dp = mh_xstrdup(cp);
 232         ap = brkstring (dp, " ", "\n");
 233         for (i = 0; ap && *ap; i++, ap++)
 234             ivector_push_back (seqnum, seq_getnum (mp, *ap));
 235
 236         num_unseen_seq = i;
 237         free(dp);
 238     }
 239
 240     ontty = isatty (fileno (stdout));
 241
 242     for (msgnum = revflag ? mp->hghsel : mp->lowsel;
 243          (revflag ? msgnum >= mp->lowsel : msgnum <= mp->hghsel);
 244          msgnum += (revflag ? -1 : 1)) {
 245         if (is_selected(mp, msgnum)) {
 246             charstring_t scanl = NULL;
 247
 248             if ((in = fopen (cp = m_name (msgnum), "r")) == NULL) {
 249                     admonish (cp, "unable to open message");
 250                 continue;
 251             }
 252
 253             if (hdrflag) {
 254                 printf ("FOLDER %s\t%s\n", folder, dtimenow(1));
 255             }
 256
 257             /*
 258              * Check if message is in any sequence given
 259              * by Unseen-Sequence profile entry.
 260              */
 261             unseen = false;
 262             for (i = 0; i < num_unseen_seq; i++) {
 263                 if (in_sequence(mp, ivector_at (seqnum, i), msgnum)) {
 264                     unseen = true;
 265                     break;
 266                 }
 267             }
 268
 269             switch (state = scan (in, msgnum, 0, nfs, width,
 270                         msgnum == mp->curmsg, unseen,
 271                         folder, 0L, 1, &scanl)) {
 272                 case SCNMSG:
 273                 case SCNENC:
 274                 case SCNERR:
 275                     break;
 276
 277                 default:
 278                     die("scan() botch (%d)", state);
 279
 280                 case SCNEOF:
 281                     inform("message %d: empty", msgnum);
 282                     break;
 283             }
 284             charstring_free (scanl);
 285             scan_finished ();
 286             hdrflag = false;
 287             fclose (in);
 288             if (ontty)
 289                 fflush (stdout);
 290         }
 291     }
 292
 293     ivector_free (seqnum);
 294     folder_free (mp);   /* free folder/message structure */
 295     if (clearflag)
 296         nmh_clear_screen ();
 297
 298     done (0);
 299     return 1;
 300 }