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