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