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