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