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/getarguments.h"
  10 #include "sbr/seq_setprev.h"
  11 #include "sbr/seq_save.h"
  12 #include "sbr/smatch.h"
  13 #include "sbr/m_convert.h"
  14 #include "sbr/getfolder.h"
  15 #include "sbr/folder_read.h"
  16 #include "sbr/folder_free.h"
  17 #include "sbr/context_save.h"
  18 #include "sbr/context_replace.h"
  19 #include "sbr/context_find.h"
  20 #include "sbr/brkstring.h"
  21 #include "sbr/ambigsw.h"
  22 #include "sbr/path.h"
  23 #include "sbr/print_version.h"
  24 #include "sbr/print_help.h"
  25 #include "sbr/seq_getnum.h"
  26 #include "sbr/error.h"
  27 #include "h/fmt_scan.h"
  28 #include "h/scansbr.h"
  29 #include "h/tws.h"
  30 #include "h/mts.h"
  31 #include "h/done.h"
  32 #include "h/utils.h"
  33 #include "sbr/m_maildir.h"
  34 #include "sbr/terminal.h"
  35
  36 #define SCAN_SWITCHES \
  37     X("clear", 0, CLRSW) \
  38     X("noclear", 0, NCLRSW) \
  39     X("form formatfile", 0, FORMSW) \
  40     X("format string", 5, FMTSW) \
  41     X("header", 0, HEADSW) \
  42     X("noheader", 0, NHEADSW) \
  43     X("width columns", 0, WIDTHSW) \
  44     X("reverse", 0, REVSW) \
  45     X("noreverse", 0, NREVSW) \
  46     X("file file", 4, FILESW) \
  47     X("version", 0, VERSIONSW) \
  48     X("help", 0, HELPSW) \
  49
  50 #define X(sw, minchars, id) id,
  51 DEFINE_SWITCH_ENUM(SCAN);
  52 #undef X
  53
  54 #define X(sw, minchars, id) { sw, minchars, id },
  55 DEFINE_SWITCH_ARRAY(SCAN, switches);
  56 #undef X
  57
  58
  59 int
  60 main (int argc, char **argv)
  61 {
  62     bool clearflag = false;
  63     bool hdrflag = false;
  64     int ontty;
  65     int width = -1;
  66     bool revflag = false;
  67     int i, state, msgnum;
  68     ivector_t seqnum = ivector_create (0);
  69     bool unseen;
  70     int num_unseen_seq = 0;
  71     char *cp, *maildir, *file = NULL, *folder = NULL;
  72     char *form = NULL, *format = NULL, buf[BUFSIZ];
  73     char **argp, *nfs, **arguments;
  74     struct msgs_array msgs = { 0, 0, NULL };
  75     struct msgs *mp;
  76     FILE *in;
  77
  78     if (nmh_init(argv[0], true, true)) { return 1; }
  79
  80     mts_init ();
  81     arguments = getarguments (invo_name, argc, argv, 1);
  82     argp = arguments;
  83
  84     /*
  85      * Parse arguments
  86      */
  87     while ((cp = *argp++)) {
  88         if (*cp == '-') {
  89             switch (smatch (++cp, switches)) {
  90                 case AMBIGSW:
  91                     ambigsw (cp, switches);
  92                     done (1);
  93                 case UNKWNSW:
  94                     die("-%s unknown", cp);
  95
  96                 case HELPSW:
  97                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  98                         invo_name);
  99                     print_help (buf, switches, 1);
 100                     done (0);
 101                 case VERSIONSW:
 102                     print_version(invo_name);
 103                     done (0);
 104
 105                 case CLRSW:
 106                     clearflag = true;
 107                     continue;
 108                 case NCLRSW:
 109                     clearflag = false;
 110                     continue;
 111
 112                 case FORMSW:
 113                     if (!(form = *argp++) || *form == '-')
 114                         die("missing argument to %s", argp[-2]);
 115                     format = NULL;
 116                     continue;
 117                 case FMTSW:
 118                     if (!(format = *argp++) || *format == '-')
 119                         die("missing argument to %s", argp[-2]);
 120                     form = NULL;
 121                     continue;
 122
 123                 case HEADSW:
 124                     hdrflag = true;
 125                     continue;
 126                 case NHEADSW:
 127                     hdrflag = false;
 128                     continue;
 129
 130                 case WIDTHSW:
 131                     if (!(cp = *argp++) || *cp == '-')
 132                         die("missing argument to %s", argp[-2]);
 133                     width = atoi (cp);
 134                     continue;
 135                 case REVSW:
 136                     revflag = true;
 137                     continue;
 138                 case NREVSW:
 139                     revflag = false;
 140                     continue;
 141
 142                 case FILESW:
 143                     if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
 144                         die("missing argument to %s", argp[-2]);
 145                     if (strcmp (file = cp, "-"))
 146                         file = path (cp, TFILE);
 147                     continue;
 148             }
 149         }
 150         if (*cp == '+' || *cp == '@') {
 151             if (folder)
 152                 die("only one folder at a time!");
 153             folder = pluspath (cp);
 154         } else
 155             app_msgarg(&msgs, cp);
 156     }
 157
 158     if (!context_find ("path"))
 159         free (path ("./", TFOLDER));
 160
 161     /*
 162      * Get new format string.  Must be before chdir().
 163      */
 164     nfs = new_fs (form, format, FORMAT);
 165
 166     /*
 167      * We are scanning a maildrop file
 168      */
 169     if (file) {
 170         if (msgs.size)
 171             die("\"msgs\" not allowed with -file");
 172         if (folder)
 173             die("\"+folder\" not allowed with -file");
 174
 175         /* check if "file" is really stdin */
 176         if (strcmp (file, "-") == 0) {
 177             in = stdin;
 178             file = "stdin";
 179         } else {
 180             if ((in = fopen (file, "r")) == NULL)
 181                 adios (file, "unable to open");
 182         }
 183
 184         if (hdrflag) {
 185             printf ("FOLDER %s\t%s\n", file, dtimenow (1));
 186         }
 187
 188         scan_detect_mbox_style (in);
 189         for (msgnum = 1; ; ++msgnum) {
 190             charstring_t scanl = NULL;
 191
 192             state = scan (in, msgnum, -1, nfs, width, 0, 0,
 193                           hdrflag ? file : NULL, 0L, 1, &scanl);
 194             charstring_free (scanl);
 195             if (state != SCNMSG && state != SCNENC)
 196                 break;
 197         }
 198         scan_finished ();
 199         fclose (in);
 200         done (0);
 201     }
 202
 203     /*
 204      * We are scanning a folder
 205      */
 206
 207     if (!msgs.size)
 208         app_msgarg(&msgs, "all");
 209     if (!folder)
 210         folder = getfolder (1);
 211     maildir = m_maildir (folder);
 212
 213     if (chdir (maildir) == NOTOK)
 214         adios (maildir, "unable to change directory to");
 215
 216     /* read folder and create message structure */
 217     if (!(mp = folder_read (folder, 1)))
 218         die("unable to read folder %s", folder);
 219
 220     /* check for empty folder */
 221     if (mp->nummsg == 0)
 222         die("no messages in %s", folder);
 223
 224     /* parse all the message ranges/sequences and set SELECTED */
 225     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 226         if (!m_convert (mp, msgs.msgs[msgnum]))
 227             done(1);
 228     seq_setprev (mp);                   /* set the Previous-Sequence */
 229
 230     context_replace (pfolder, folder);  /* update current folder         */
 231     seq_save (mp);                      /* synchronize message sequences */
 232     context_save ();                    /* save the context file         */
 233
 234     /*
 235      * Get the sequence number for each sequence
 236      * specified by Unseen-Sequence
 237      */
 238     if ((cp = context_find (usequence)) && *cp) {
 239         char **ap, *dp;
 240
 241         dp = mh_xstrdup(cp);
 242         ap = brkstring (dp, " ", "\n");
 243         for (i = 0; ap && *ap; i++, ap++)
 244             ivector_push_back (seqnum, seq_getnum (mp, *ap));
 245
 246         num_unseen_seq = i;
 247         free(dp);
 248     }
 249
 250     ontty = isatty (fileno (stdout));
 251
 252     for (msgnum = revflag ? mp->hghsel : mp->lowsel;
 253          (revflag ? msgnum >= mp->lowsel : msgnum <= mp->hghsel);
 254          msgnum += (revflag ? -1 : 1)) {
 255         if (is_selected(mp, msgnum)) {
 256             charstring_t scanl = NULL;
 257
 258             if ((in = fopen (cp = m_name (msgnum), "r")) == NULL) {
 259                     admonish (cp, "unable to open message");
 260                 continue;
 261             }
 262
 263             if (hdrflag) {
 264                 printf ("FOLDER %s\t%s\n", folder, dtimenow(1));
 265             }
 266
 267             /*
 268              * Check if message is in any sequence given
 269              * by Unseen-Sequence profile entry.
 270              */
 271             unseen = false;
 272             for (i = 0; i < num_unseen_seq; i++) {
 273                 if (in_sequence(mp, ivector_at (seqnum, i), msgnum)) {
 274                     unseen = true;
 275                     break;
 276                 }
 277             }
 278
 279             switch (state = scan (in, msgnum, 0, nfs, width,
 280                         msgnum == mp->curmsg, unseen,
 281                         folder, 0L, 1, &scanl)) {
 282                 case SCNMSG:
 283                 case SCNENC:
 284                 case SCNERR:
 285                     break;
 286
 287                 default:
 288                     die("scan() botch (%d)", state);
 289
 290                 case SCNEOF:
 291                     inform("message %d: empty", msgnum);
 292                     break;
 293             }
 294             charstring_free (scanl);
 295             scan_finished ();
 296             hdrflag = false;
 297             fclose (in);
 298             if (ontty)
 299                 fflush (stdout);
 300         }
 301     }
 302
 303     ivector_free (seqnum);
 304     folder_free (mp);   /* free folder/message structure */
 305     if (clearflag)
 306         nmh_clear_screen ();
 307
 308     done (0);
 309     return 1;
 310 }