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/seq_setprev.h"
  10 #include "sbr/seq_save.h"
  11 #include "sbr/smatch.h"
  12 #include "sbr/m_convert.h"
  13 #include "sbr/getfolder.h"
  14 #include "sbr/folder_read.h"
  15 #include "sbr/folder_free.h"
  16 #include "sbr/context_save.h"
  17 #include "sbr/context_replace.h"
  18 #include "sbr/context_find.h"
  19 #include "sbr/brkstring.h"
  20 #include "sbr/ambigsw.h"
  21 #include "sbr/path.h"
  22 #include "sbr/print_version.h"
  23 #include "sbr/print_help.h"
  24 #include "sbr/seq_getnum.h"
  25 #include "sbr/error.h"
  26 #include "h/fmt_scan.h"
  27 #include "h/scansbr.h"
  28 #include "h/tws.h"
  29 #include "h/mts.h"
  30 #include "h/done.h"
  31 #include "h/utils.h"
  32 #include "sbr/m_maildir.h"
  33 #include "sbr/terminal.h"
  34
  35 #define SCAN_SWITCHES \
  36     X("clear", 0, CLRSW) \
  37     X("noclear", 0, NCLRSW) \
  38     X("form formatfile", 0, FORMSW) \
  39     X("format string", 5, FMTSW) \
  40     X("header", 0, HEADSW) \
  41     X("noheader", 0, NHEADSW) \
  42     X("width columns", 0, WIDTHSW) \
  43     X("reverse", 0, REVSW) \
  44     X("noreverse", 0, NREVSW) \
  45     X("file file", 4, FILESW) \
  46     X("version", 0, VERSIONSW) \
  47     X("help", 0, HELPSW) \
  48
  49 #define X(sw, minchars, id) id,
  50 DEFINE_SWITCH_ENUM(SCAN);
  51 #undef X
  52
  53 #define X(sw, minchars, id) { sw, minchars, id },
  54 DEFINE_SWITCH_ARRAY(SCAN, switches);
  55 #undef X
  56
  57
  58 int
  59 main (int argc, char **argv)
  60 {
  61     bool clearflag = false;
  62     bool hdrflag = false;
  63     int ontty;
  64     int width = -1;
  65     bool revflag = false;
  66     int i, state, msgnum;
  67     ivector_t seqnum = ivector_create (0);
  68     bool unseen;
  69     int num_unseen_seq = 0;
  70     char *cp, *maildir, *file = NULL, *folder = NULL;
  71     char *form = NULL, *format = NULL, buf[BUFSIZ];
  72     char **argp, *nfs, **arguments;
  73     struct msgs_array msgs = { 0, 0, NULL };
  74     struct msgs *mp;
  75     FILE *in;
  76
  77     if (nmh_init(argv[0], true, true)) { return 1; }
  78
  79     mts_init ();
  80     arguments = getarguments (invo_name, argc, argv, 1);
  81     argp = arguments;
  82
  83     /*
  84      * Parse arguments
  85      */
  86     while ((cp = *argp++)) {
  87         if (*cp == '-') {
  88             switch (smatch (++cp, switches)) {
  89                 case AMBIGSW:
  90                     ambigsw (cp, switches);
  91                     done (1);
  92                 case UNKWNSW:
  93                     die("-%s unknown", cp);
  94
  95                 case HELPSW:
  96                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  97                         invo_name);
  98                     print_help (buf, switches, 1);
  99                     done (0);
 100                 case VERSIONSW:
 101                     print_version(invo_name);
 102                     done (0);
 103
 104                 case CLRSW:
 105                     clearflag = true;
 106                     continue;
 107                 case NCLRSW:
 108                     clearflag = false;
 109                     continue;
 110
 111                 case FORMSW:
 112                     if (!(form = *argp++) || *form == '-')
 113                         die("missing argument to %s", argp[-2]);
 114                     format = NULL;
 115                     continue;
 116                 case FMTSW:
 117                     if (!(format = *argp++) || *format == '-')
 118                         die("missing argument to %s", argp[-2]);
 119                     form = NULL;
 120                     continue;
 121
 122                 case HEADSW:
 123                     hdrflag = true;
 124                     continue;
 125                 case NHEADSW:
 126                     hdrflag = false;
 127                     continue;
 128
 129                 case WIDTHSW:
 130                     if (!(cp = *argp++) || *cp == '-')
 131                         die("missing argument to %s", argp[-2]);
 132                     width = atoi (cp);
 133                     continue;
 134                 case REVSW:
 135                     revflag = true;
 136                     continue;
 137                 case NREVSW:
 138                     revflag = false;
 139                     continue;
 140
 141                 case FILESW:
 142                     if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
 143                         die("missing argument to %s", argp[-2]);
 144                     if (strcmp (file = cp, "-"))
 145                         file = path (cp, TFILE);
 146                     continue;
 147             }
 148         }
 149         if (*cp == '+' || *cp == '@') {
 150             if (folder)
 151                 die("only one folder at a time!");
 152             folder = pluspath (cp);
 153         } else
 154             app_msgarg(&msgs, cp);
 155     }
 156
 157     if (!context_find ("path"))
 158         free (path ("./", TFOLDER));
 159
 160     /*
 161      * Get new format string.  Must be before chdir().
 162      */
 163     nfs = new_fs (form, format, FORMAT);
 164
 165     /*
 166      * We are scanning a maildrop file
 167      */
 168     if (file) {
 169         if (msgs.size)
 170             die("\"msgs\" not allowed with -file");
 171         if (folder)
 172             die("\"+folder\" not allowed with -file");
 173
 174         /* check if "file" is really stdin */
 175         if (strcmp (file, "-") == 0) {
 176             in = stdin;
 177             file = "stdin";
 178         } else {
 179             if ((in = fopen (file, "r")) == NULL)
 180                 adios (file, "unable to open");
 181         }
 182
 183         if (hdrflag) {
 184             printf ("FOLDER %s\t%s\n", file, dtimenow (1));
 185         }
 186
 187         scan_detect_mbox_style (in);
 188         for (msgnum = 1; ; ++msgnum) {
 189             charstring_t scanl = NULL;
 190
 191             state = scan (in, msgnum, -1, nfs, width, 0, 0,
 192                           hdrflag ? file : NULL, 0L, 1, &scanl);
 193             charstring_free (scanl);
 194             if (state != SCNMSG && state != SCNENC)
 195                 break;
 196         }
 197         scan_finished ();
 198         fclose (in);
 199         done (0);
 200     }
 201
 202     /*
 203      * We are scanning a folder
 204      */
 205
 206     if (!msgs.size)
 207         app_msgarg(&msgs, "all");
 208     if (!folder)
 209         folder = getfolder (1);
 210     maildir = m_maildir (folder);
 211
 212     if (chdir (maildir) == NOTOK)
 213         adios (maildir, "unable to change directory to");
 214
 215     /* read folder and create message structure */
 216     if (!(mp = folder_read (folder, 1)))
 217         die("unable to read folder %s", folder);
 218
 219     /* check for empty folder */
 220     if (mp->nummsg == 0)
 221         die("no messages in %s", folder);
 222
 223     /* parse all the message ranges/sequences and set SELECTED */
 224     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 225         if (!m_convert (mp, msgs.msgs[msgnum]))
 226             done(1);
 227     seq_setprev (mp);                   /* set the Previous-Sequence */
 228
 229     context_replace (pfolder, folder);  /* update current folder         */
 230     seq_save (mp);                      /* synchronize message sequences */
 231     context_save ();                    /* save the context file         */
 232
 233     /*
 234      * Get the sequence number for each sequence
 235      * specified by Unseen-Sequence
 236      */
 237     if ((cp = context_find (usequence)) && *cp) {
 238         char **ap, *dp;
 239
 240         dp = mh_xstrdup(cp);
 241         ap = brkstring (dp, " ", "\n");
 242         for (i = 0; ap && *ap; i++, ap++)
 243             ivector_push_back (seqnum, seq_getnum (mp, *ap));
 244
 245         num_unseen_seq = i;
 246         free(dp);
 247     }
 248
 249     ontty = isatty (fileno (stdout));
 250
 251     for (msgnum = revflag ? mp->hghsel : mp->lowsel;
 252          (revflag ? msgnum >= mp->lowsel : msgnum <= mp->hghsel);
 253          msgnum += (revflag ? -1 : 1)) {
 254         if (is_selected(mp, msgnum)) {
 255             charstring_t scanl = NULL;
 256
 257             if ((in = fopen (cp = m_name (msgnum), "r")) == NULL) {
 258                     admonish (cp, "unable to open message");
 259                 continue;
 260             }
 261
 262             if (hdrflag) {
 263                 printf ("FOLDER %s\t%s\n", folder, dtimenow(1));
 264             }
 265
 266             /*
 267              * Check if message is in any sequence given
 268              * by Unseen-Sequence profile entry.
 269              */
 270             unseen = false;
 271             for (i = 0; i < num_unseen_seq; i++) {
 272                 if (in_sequence(mp, ivector_at (seqnum, i), msgnum)) {
 273                     unseen = true;
 274                     break;
 275                 }
 276             }
 277
 278             switch (state = scan (in, msgnum, 0, nfs, width,
 279                         msgnum == mp->curmsg, unseen,
 280                         folder, 0L, 1, &scanl)) {
 281                 case SCNMSG:
 282                 case SCNENC:
 283                 case SCNERR:
 284                     break;
 285
 286                 default:
 287                     die("scan() botch (%d)", state);
 288
 289                 case SCNEOF:
 290                     inform("message %d: empty", msgnum);
 291                     break;
 292             }
 293             charstring_free (scanl);
 294             scan_finished ();
 295             hdrflag = false;
 296             fclose (in);
 297             if (ontty)
 298                 fflush (stdout);
 299         }
 300     }
 301
 302     ivector_free (seqnum);
 303     folder_free (mp);   /* free folder/message structure */
 304     if (clearflag)
 305         nmh_clear_screen ();
 306
 307     done (0);
 308     return 1;
 309 }