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