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