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