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 "scansbr.h"
  10 #include "sbr/m_name.h"
  11 #include "sbr/getarguments.h"
  12 #include "sbr/seq_setprev.h"
  13 #include "sbr/seq_save.h"
  14 #include "sbr/smatch.h"
  15 #include "sbr/m_convert.h"
  16 #include "sbr/getfolder.h"
  17 #include "sbr/folder_read.h"
  18 #include "sbr/folder_free.h"
  19 #include "sbr/context_save.h"
  20 #include "sbr/context_replace.h"
  21 #include "sbr/context_find.h"
  22 #include "sbr/brkstring.h"
  23 #include "sbr/ambigsw.h"
  24 #include "sbr/path.h"
  25 #include "sbr/print_version.h"
  26 #include "sbr/print_help.h"
  27 #include "sbr/seq_getnum.h"
  28 #include "sbr/error.h"
  29 #include "h/fmt_scan.h"
  30 #include "h/tws.h"
  31 #include "h/mts.h"
  32 #include "h/done.h"
  33 #include "h/utils.h"
  34 #include "sbr/m_maildir.h"
  35 #include "sbr/terminal.h"
  36
  37 #define SCAN_SWITCHES \
  38     X("clear", 0, CLRSW) \
  39     X("noclear", 0, NCLRSW) \
  40     X("form formatfile", 0, FORMSW) \
  41     X("format string", 5, FMTSW) \
  42     X("header", 0, HEADSW) \
  43     X("noheader", 0, NHEADSW) \
  44     X("width columns", 0, WIDTHSW) \
  45     X("reverse", 0, REVSW) \
  46     X("noreverse", 0, NREVSW) \
  47     X("file file", 4, FILESW) \
  48     X("version", 0, VERSIONSW) \
  49     X("help", 0, HELPSW) \
  50
  51 #define X(sw, minchars, id) id,
  52 DEFINE_SWITCH_ENUM(SCAN);
  53 #undef X
  54
  55 #define X(sw, minchars, id) { sw, minchars, id },
  56 DEFINE_SWITCH_ARRAY(SCAN, switches);
  57 #undef X
  58
  59
  60 int
  61 main (int argc, char **argv)
  62 {
  63     bool clearflag = false;
  64     bool hdrflag = false;
  65     int ontty;
  66     int width = -1;
  67     bool revflag = false;
  68     int i, state, msgnum;
  69     ivector_t seqnum = ivector_create (0);
  70     bool unseen;
  71     int num_unseen_seq = 0;
  72     char *cp, *maildir, *file = NULL, *folder = NULL;
  73     char *form = NULL, *format = NULL, buf[BUFSIZ];
  74     char **argp, *nfs, **arguments;
  75     struct msgs_array msgs = { 0, 0, NULL };
  76     struct msgs *mp;
  77     FILE *in;
  78
  79     if (nmh_init(argv[0], true, true)) { return 1; }
  80
  81     mts_init ();
  82     arguments = getarguments (invo_name, argc, argv, 1);
  83     argp = arguments;
  84
  85     /*
  86      * Parse arguments
  87      */
  88     while ((cp = *argp++)) {
  89         if (*cp == '-') {
  90             switch (smatch (++cp, switches)) {
  91                 case AMBIGSW:
  92                     ambigsw (cp, switches);
  93                     done (1);
  94                 case UNKWNSW:
  95                     die("-%s unknown", cp);
  96
  97                 case HELPSW:
  98                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  99                         invo_name);
 100                     print_help (buf, switches, 1);
 101                     done (0);
 102                 case VERSIONSW:
 103                     print_version(invo_name);
 104                     done (0);
 105
 106                 case CLRSW:
 107                     clearflag = true;
 108                     continue;
 109                 case NCLRSW:
 110                     clearflag = false;
 111                     continue;
 112
 113                 case FORMSW:
 114                     if (!(form = *argp++) || *form == '-')
 115                         die("missing argument to %s", argp[-2]);
 116                     format = NULL;
 117                     continue;
 118                 case FMTSW:
 119                     if (!(format = *argp++) || *format == '-')
 120                         die("missing argument to %s", argp[-2]);
 121                     form = NULL;
 122                     continue;
 123
 124                 case HEADSW:
 125                     hdrflag = true;
 126                     continue;
 127                 case NHEADSW:
 128                     hdrflag = false;
 129                     continue;
 130
 131                 case WIDTHSW:
 132                     if (!(cp = *argp++) || *cp == '-')
 133                         die("missing argument to %s", argp[-2]);
 134                     width = atoi (cp);
 135                     continue;
 136                 case REVSW:
 137                     revflag = true;
 138                     continue;
 139                 case NREVSW:
 140                     revflag = false;
 141                     continue;
 142
 143                 case FILESW:
 144                     if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
 145                         die("missing argument to %s", argp[-2]);
 146                     if (strcmp (file = cp, "-"))
 147                         file = path (cp, TFILE);
 148                     continue;
 149             }
 150         }
 151         if (*cp == '+' || *cp == '@') {
 152             if (folder)
 153                 die("only one folder at a time!");
 154             folder = pluspath (cp);
 155         } else
 156             app_msgarg(&msgs, cp);
 157     }
 158
 159     if (!context_find ("path"))
 160         free (path ("./", TFOLDER));
 161
 162     /*
 163      * Get new format string.  Must be before chdir().
 164      */
 165     nfs = new_fs (form, format, FORMAT);
 166
 167     /*
 168      * We are scanning a maildrop file
 169      */
 170     if (file) {
 171         if (msgs.size)
 172             die("\"msgs\" not allowed with -file");
 173         if (folder)
 174             die("\"+folder\" not allowed with -file");
 175
 176         /* check if "file" is really stdin */
 177         if (strcmp (file, "-") == 0) {
 178             in = stdin;
 179             file = "stdin";
 180         } else {
 181             if ((in = fopen (file, "r")) == NULL)
 182                 adios (file, "unable to open");
 183         }
 184
 185         if (hdrflag) {
 186             printf ("FOLDER %s\t%s\n", file, dtimenow (1));
 187         }
 188
 189         scan_detect_mbox_style (in);
 190         for (msgnum = 1; ; ++msgnum) {
 191             charstring_t scanl = NULL;
 192
 193             state = scan (in, msgnum, -1, nfs, width, 0, 0,
 194                           hdrflag ? file : NULL, 0L, 1, &scanl);
 195             charstring_free (scanl);
 196             if (state != SCNMSG && state != SCNENC)
 197                 break;
 198         }
 199         scan_finished ();
 200         fclose (in);
 201         done (0);
 202     }
 203
 204     /*
 205      * We are scanning a folder
 206      */
 207
 208     if (!msgs.size)
 209         app_msgarg(&msgs, "all");
 210     if (!folder)
 211         folder = getfolder (1);
 212     maildir = m_maildir (folder);
 213
 214     if (chdir (maildir) == NOTOK)
 215         adios (maildir, "unable to change directory to");
 216
 217     /* read folder and create message structure */
 218     if (!(mp = folder_read (folder, 1)))
 219         die("unable to read folder %s", folder);
 220
 221     /* check for empty folder */
 222     if (mp->nummsg == 0)
 223         die("no messages in %s", folder);
 224
 225     /* parse all the message ranges/sequences and set SELECTED */
 226     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 227         if (!m_convert (mp, msgs.msgs[msgnum]))
 228             done(1);
 229     seq_setprev (mp);                   /* set the Previous-Sequence */
 230
 231     context_replace (pfolder, folder);  /* update current folder         */
 232     seq_save (mp);                      /* synchronize message sequences */
 233     context_save ();                    /* save the context file         */
 234
 235     /*
 236      * Get the sequence number for each sequence
 237      * specified by Unseen-Sequence
 238      */
 239     if ((cp = context_find (usequence)) && *cp) {
 240         char **ap, *dp;
 241
 242         dp = mh_xstrdup(cp);
 243         ap = brkstring (dp, " ", "\n");
 244         for (i = 0; ap && *ap; i++, ap++)
 245             ivector_push_back (seqnum, seq_getnum (mp, *ap));
 246
 247         num_unseen_seq = i;
 248         free(dp);
 249     }
 250
 251     ontty = isatty (fileno (stdout));
 252
 253     for (msgnum = revflag ? mp->hghsel : mp->lowsel;
 254          (revflag ? msgnum >= mp->lowsel : msgnum <= mp->hghsel);
 255          msgnum += (revflag ? -1 : 1)) {
 256         if (is_selected(mp, msgnum)) {
 257             charstring_t scanl = NULL;
 258
 259             if ((in = fopen (cp = m_name (msgnum), "r")) == NULL) {
 260                     admonish (cp, "unable to open message");
 261                 continue;
 262             }
 263
 264             if (hdrflag) {
 265                 printf ("FOLDER %s\t%s\n", folder, dtimenow(1));
 266             }
 267
 268             /*
 269              * Check if message is in any sequence given
 270              * by Unseen-Sequence profile entry.
 271              */
 272             unseen = false;
 273             for (i = 0; i < num_unseen_seq; i++) {
 274                 if (in_sequence(mp, ivector_at (seqnum, i), msgnum)) {
 275                     unseen = true;
 276                     break;
 277                 }
 278             }
 279
 280             switch (state = scan (in, msgnum, 0, nfs, width,
 281                         msgnum == mp->curmsg, unseen,
 282                         folder, 0L, 1, &scanl)) {
 283                 case SCNMSG:
 284                 case SCNENC:
 285                 case SCNERR:
 286                     break;
 287
 288                 default:
 289                     die("scan() botch (%d)", state);
 290
 291                 case SCNEOF:
 292                     inform("message %d: empty", msgnum);
 293                     break;
 294             }
 295             charstring_free (scanl);
 296             scan_finished ();
 297             hdrflag = false;
 298             fclose (in);
 299             if (ontty)
 300                 fflush (stdout);
 301         }
 302     }
 303
 304     ivector_free (seqnum);
 305     folder_free (mp);   /* free folder/message structure */
 306     if (clearflag)
 307         nmh_clear_screen ();
 308
 309     done (0);
 310     return 1;
 311 }