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