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