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/fmt_new.h"
  10 #include "sbr/dtime.h"
  11 #include "scansbr.h"
  12 #include "sbr/m_name.h"
  13 #include "sbr/getarguments.h"
  14 #include "sbr/seq_setprev.h"
  15 #include "sbr/seq_save.h"
  16 #include "sbr/smatch.h"
  17 #include "sbr/m_convert.h"
  18 #include "sbr/getfolder.h"
  19 #include "sbr/folder_read.h"
  20 #include "sbr/folder_free.h"
  21 #include "sbr/context_save.h"
  22 #include "sbr/context_replace.h"
  23 #include "sbr/context_find.h"
  24 #include "sbr/brkstring.h"
  25 #include "sbr/ambigsw.h"
  26 #include "sbr/path.h"
  27 #include "sbr/print_version.h"
  28 #include "sbr/print_help.h"
  29 #include "sbr/seq_getnum.h"
  30 #include "sbr/error.h"
  31 #include "h/fmt_scan.h"
  32 #include "h/tws.h"
  33 #include "h/mts.h"
  34 #include "h/done.h"
  35 #include "h/utils.h"
  36 #include "sbr/m_maildir.h"
  37 #include "sbr/terminal.h"
  38
  39 #define SCAN_SWITCHES \
  40     X("clear", 0, CLRSW) \
  41     X("noclear", 0, NCLRSW) \
  42     X("form formatfile", 0, FORMSW) \
  43     X("format string", 5, FMTSW) \
  44     X("header", 0, HEADSW) \
  45     X("noheader", 0, NHEADSW) \
  46     X("width columns", 0, WIDTHSW) \
  47     X("reverse", 0, REVSW) \
  48     X("noreverse", 0, NREVSW) \
  49     X("file file", 4, FILESW) \
  50     X("version", 0, VERSIONSW) \
  51     X("help", 0, HELPSW) \
  52
  53 #define X(sw, minchars, id) id,
  54 DEFINE_SWITCH_ENUM(SCAN);
  55 #undef X
  56
  57 #define X(sw, minchars, id) { sw, minchars, id },
  58 DEFINE_SWITCH_ARRAY(SCAN, switches);
  59 #undef X
  60
  61
  62 int
  63 main (int argc, char **argv)
  64 {
  65     bool clearflag = false;
  66     bool hdrflag = false;
  67     int ontty;
  68     int width = -1;
  69     bool revflag = false;
  70     int i, state, msgnum;
  71     ivector_t seqnum = ivector_create (0);
  72     bool unseen;
  73     int num_unseen_seq = 0;
  74     char *cp, *maildir, *file = NULL, *folder = NULL;
  75     char *form = NULL, *format = NULL, buf[BUFSIZ];
  76     char **argp, *nfs, **arguments;
  77     struct msgs_array msgs = { 0, 0, NULL };
  78     struct msgs *mp;
  79     FILE *in;
  80
  81     if (nmh_init(argv[0], true, true)) { return 1; }
  82
  83     mts_init ();
  84     arguments = getarguments (invo_name, argc, argv, 1);
  85     argp = arguments;
  86
  87     /*
  88      * Parse arguments
  89      */
  90     while ((cp = *argp++)) {
  91         if (*cp == '-') {
  92             switch (smatch (++cp, switches)) {
  93                 case AMBIGSW:
  94                     ambigsw (cp, switches);
  95                     done (1);
  96                 case UNKWNSW:
  97                     die("-%s unknown", cp);
  98
  99                 case HELPSW:
 100                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 101                         invo_name);
 102                     print_help (buf, switches, 1);
 103                     done (0);
 104                 case VERSIONSW:
 105                     print_version(invo_name);
 106                     done (0);
 107
 108                 case CLRSW:
 109                     clearflag = true;
 110                     continue;
 111                 case NCLRSW:
 112                     clearflag = false;
 113                     continue;
 114
 115                 case FORMSW:
 116                     if (!(form = *argp++) || *form == '-')
 117                         die("missing argument to %s", argp[-2]);
 118                     format = NULL;
 119                     continue;
 120                 case FMTSW:
 121                     if (!(format = *argp++) || *format == '-')
 122                         die("missing argument to %s", argp[-2]);
 123                     form = NULL;
 124                     continue;
 125
 126                 case HEADSW:
 127                     hdrflag = true;
 128                     continue;
 129                 case NHEADSW:
 130                     hdrflag = false;
 131                     continue;
 132
 133                 case WIDTHSW:
 134                     if (!(cp = *argp++) || *cp == '-')
 135                         die("missing argument to %s", argp[-2]);
 136                     width = atoi (cp);
 137                     continue;
 138                 case REVSW:
 139                     revflag = true;
 140                     continue;
 141                 case NREVSW:
 142                     revflag = false;
 143                     continue;
 144
 145                 case FILESW:
 146                     if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
 147                         die("missing argument to %s", argp[-2]);
 148                     if (strcmp (file = cp, "-"))
 149                         file = path (cp, TFILE);
 150                     continue;
 151             }
 152         }
 153         if (*cp == '+' || *cp == '@') {
 154             if (folder)
 155                 die("only one folder at a time!");
 156             folder = pluspath (cp);
 157         } else
 158             app_msgarg(&msgs, cp);
 159     }
 160
 161     if (!context_find ("path"))
 162         free (path ("./", TFOLDER));
 163
 164     /*
 165      * Get new format string.  Must be before chdir().
 166      */
 167     nfs = new_fs (form, format, FORMAT);
 168
 169     /*
 170      * We are scanning a maildrop file
 171      */
 172     if (file) {
 173         if (msgs.size)
 174             die("\"msgs\" not allowed with -file");
 175         if (folder)
 176             die("\"+folder\" not allowed with -file");
 177
 178         /* check if "file" is really stdin */
 179         if (strcmp (file, "-") == 0) {
 180             in = stdin;
 181             file = "stdin";
 182         } else {
 183             if ((in = fopen (file, "r")) == NULL)
 184                 adios (file, "unable to open");
 185         }
 186
 187         if (hdrflag) {
 188             printf ("FOLDER %s\t%s\n", file, dtimenow (1));
 189         }
 190
 191         scan_detect_mbox_style (in);
 192         for (msgnum = 1; ; ++msgnum) {
 193             charstring_t scanl = NULL;
 194
 195             state = scan (in, msgnum, -1, nfs, width, 0, 0,
 196                           hdrflag ? file : NULL, 0L, 1, &scanl);
 197             charstring_free (scanl);
 198             if (state != SCNMSG && state != SCNENC)
 199                 break;
 200         }
 201         scan_finished ();
 202         fclose (in);
 203         done (0);
 204     }
 205
 206     /*
 207      * We are scanning a folder
 208      */
 209
 210     if (!msgs.size)
 211         app_msgarg(&msgs, "all");
 212     if (!folder)
 213         folder = getfolder (1);
 214     maildir = m_maildir (folder);
 215
 216     if (chdir (maildir) == NOTOK)
 217         adios (maildir, "unable to change directory to");
 218
 219     /* read folder and create message structure */
 220     if (!(mp = folder_read (folder, 1)))
 221         die("unable to read folder %s", folder);
 222
 223     /* check for empty folder */
 224     if (mp->nummsg == 0)
 225         die("no messages in %s", folder);
 226
 227     /* parse all the message ranges/sequences and set SELECTED */
 228     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 229         if (!m_convert (mp, msgs.msgs[msgnum]))
 230             done(1);
 231     seq_setprev (mp);                   /* set the Previous-Sequence */
 232
 233     context_replace (pfolder, folder);  /* update current folder         */
 234     seq_save (mp);                      /* synchronize message sequences */
 235     context_save ();                    /* save the context file         */
 236
 237     /*
 238      * Get the sequence number for each sequence
 239      * specified by Unseen-Sequence
 240      */
 241     if ((cp = context_find (usequence)) && *cp) {
 242         char **ap, *dp;
 243
 244         dp = mh_xstrdup(cp);
 245         ap = brkstring (dp, " ", "\n");
 246         for (i = 0; ap && *ap; i++, ap++)
 247             ivector_push_back (seqnum, seq_getnum (mp, *ap));
 248
 249         num_unseen_seq = i;
 250         free(dp);
 251     }
 252
 253     ontty = isatty (fileno (stdout));
 254
 255     for (msgnum = revflag ? mp->hghsel : mp->lowsel;
 256          (revflag ? msgnum >= mp->lowsel : msgnum <= mp->hghsel);
 257          msgnum += (revflag ? -1 : 1)) {
 258         if (is_selected(mp, msgnum)) {
 259             charstring_t scanl = NULL;
 260
 261             if ((in = fopen (cp = m_name (msgnum), "r")) == NULL) {
 262                     admonish (cp, "unable to open message");
 263                 continue;
 264             }
 265
 266             if (hdrflag) {
 267                 printf ("FOLDER %s\t%s\n", folder, dtimenow(1));
 268             }
 269
 270             /*
 271              * Check if message is in any sequence given
 272              * by Unseen-Sequence profile entry.
 273              */
 274             unseen = false;
 275             for (i = 0; i < num_unseen_seq; i++) {
 276                 if (in_sequence(mp, ivector_at (seqnum, i), msgnum)) {
 277                     unseen = true;
 278                     break;
 279                 }
 280             }
 281
 282             switch (state = scan (in, msgnum, 0, nfs, width,
 283                         msgnum == mp->curmsg, unseen,
 284                         folder, 0L, 1, &scanl)) {
 285                 case SCNMSG:
 286                 case SCNENC:
 287                 case SCNERR:
 288                     break;
 289
 290                 default:
 291                     die("scan() botch (%d)", state);
 292
 293                 case SCNEOF:
 294                     inform("message %d: empty", msgnum);
 295                     break;
 296             }
 297             charstring_free (scanl);
 298             scan_finished ();
 299             hdrflag = false;
 300             fclose (in);
 301             if (ontty)
 302                 fflush (stdout);
 303         }
 304     }
 305
 306     ivector_free (seqnum);
 307     folder_free (mp);   /* free folder/message structure */
 308     if (clearflag)
 309         nmh_clear_screen ();
 310
 311     done (0);
 312     return 1;
 313 }