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     charstring_t scanl = NULL;
  80     FILE *in;
  81
  82     if (nmh_init(argv[0], true, true)) { return 1; }
  83
  84     mts_init ();
  85     arguments = getarguments (invo_name, argc, argv, 1);
  86     argp = arguments;
  87
  88     /*
  89      * Parse arguments
  90      */
  91     while ((cp = *argp++)) {
  92         if (*cp == '-') {
  93             switch (smatch (++cp, switches)) {
  94                 case AMBIGSW:
  95                     ambigsw (cp, switches);
  96                     done (1);
  97                 case UNKWNSW:
  98                     die("-%s unknown", cp);
  99
 100                 case HELPSW:
 101                     snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 102                         invo_name);
 103                     print_help (buf, switches, 1);
 104                     done (0);
 105                 case VERSIONSW:
 106                     print_version(invo_name);
 107                     done (0);
 108
 109                 case CLRSW:
 110                     clearflag = true;
 111                     continue;
 112                 case NCLRSW:
 113                     clearflag = false;
 114                     continue;
 115
 116                 case FORMSW:
 117                     if (!(form = *argp++) || *form == '-')
 118                         die("missing argument to %s", argp[-2]);
 119                     format = NULL;
 120                     continue;
 121                 case FMTSW:
 122                     if (!(format = *argp++) || *format == '-')
 123                         die("missing argument to %s", argp[-2]);
 124                     form = NULL;
 125                     continue;
 126
 127                 case HEADSW:
 128                     hdrflag = true;
 129                     continue;
 130                 case NHEADSW:
 131                     hdrflag = false;
 132                     continue;
 133
 134                 case WIDTHSW:
 135                     if (!(cp = *argp++) || *cp == '-')
 136                         die("missing argument to %s", argp[-2]);
 137                     width = atoi (cp);
 138                     continue;
 139                 case REVSW:
 140                     revflag = true;
 141                     continue;
 142                 case NREVSW:
 143                     revflag = false;
 144                     continue;
 145
 146                 case FILESW:
 147                     if (!(cp = *argp++) || (cp[0] == '-' && cp[1]))
 148                         die("missing argument to %s", argp[-2]);
 149                     if (strcmp (file = cp, "-"))
 150                         file = path (cp, TFILE);
 151                     continue;
 152             }
 153         }
 154         if (*cp == '+' || *cp == '@') {
 155             if (folder)
 156                 die("only one folder at a time!");
 157             folder = pluspath (cp);
 158         } else
 159             app_msgarg(&msgs, cp);
 160     }
 161
 162     if (!context_find ("path"))
 163         free (path ("./", TFOLDER));
 164
 165     /*
 166      * Get new format string.  Must be before chdir().
 167      */
 168     nfs = new_fs (form, format, FORMAT);
 169
 170     /*
 171      * We are scanning a maildrop file
 172      */
 173     if (file) {
 174         if (msgs.size)
 175             die("\"msgs\" not allowed with -file");
 176         if (folder)
 177             die("\"+folder\" not allowed with -file");
 178
 179         /* check if "file" is really stdin */
 180         if (strcmp (file, "-") == 0) {
 181             in = stdin;
 182             file = "stdin";
 183         } else {
 184             if ((in = fopen (file, "r")) == NULL)
 185                 adios (file, "unable to open");
 186         }
 187
 188         if (hdrflag) {
 189             printf ("FOLDER %s\t%s\n", file, dtimenow (1));
 190         }
 191
 192         scan_detect_mbox_style (in);
 193         for (msgnum = 1; ; ++msgnum) {
 194             state = scan (in, msgnum, -1, nfs, width, 0, 0,
 195                           hdrflag ? file : NULL, 0L, 1, &scanl);
 196             if (scanl)
 197                 charstring_clear(scanl);
 198             if (state != SCNMSG && state != SCNENC)
 199                 break;
 200         }
 201         charstring_free (scanl);
 202         scan_finished ();
 203         fclose (in);
 204         done (0);
 205     }
 206
 207     /*
 208      * We are scanning a folder
 209      */
 210
 211     if (!msgs.size)
 212         app_msgarg(&msgs, "all");
 213     if (!folder)
 214         folder = getfolder (1);
 215     maildir = m_maildir (folder);
 216
 217     if (chdir (maildir) == NOTOK)
 218         adios (maildir, "unable to change directory to");
 219
 220     /* read folder and create message structure */
 221     if (!(mp = folder_read (folder, 1)))
 222         die("unable to read folder %s", folder);
 223
 224     /* check for empty folder */
 225     if (mp->nummsg == 0)
 226         die("no messages in %s", folder);
 227
 228     /* parse all the message ranges/sequences and set SELECTED */
 229     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 230         if (!m_convert (mp, msgs.msgs[msgnum]))
 231             done(1);
 232     seq_setprev (mp);                   /* set the Previous-Sequence */
 233
 234     context_replace (pfolder, folder);  /* update current folder         */
 235     seq_save (mp);                      /* synchronize message sequences */
 236     context_save ();                    /* save the context file         */
 237
 238     /*
 239      * Get the sequence number for each sequence
 240      * specified by Unseen-Sequence
 241      */
 242     if ((cp = context_find (usequence)) && *cp) {
 243         char **ap, *dp;
 244
 245         dp = mh_xstrdup(cp);
 246         ap = brkstring (dp, " ", "\n");
 247         for (i = 0; ap && *ap; i++, ap++)
 248             ivector_push_back (seqnum, seq_getnum (mp, *ap));
 249
 250         num_unseen_seq = i;
 251         free(dp);
 252     }
 253
 254     ontty = isatty (fileno (stdout));
 255
 256     for (msgnum = revflag ? mp->hghsel : mp->lowsel;
 257          (revflag ? msgnum >= mp->lowsel : msgnum <= mp->hghsel);
 258          msgnum += (revflag ? -1 : 1)) {
 259         if (is_selected(mp, msgnum)) {
 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             if (scanl)
 298                 charstring_clear(scanl);
 299             scan_finished ();
 300             hdrflag = false;
 301             fclose (in);
 302             if (ontty)
 303                 fflush (stdout);
 304         }
 305     }
 306     charstring_free (scanl);
 307
 308     ivector_free (seqnum);
 309     folder_free (mp);   /* free folder/message structure */
 310     if (clearflag)
 311         nmh_clear_screen ();
 312
 313     done (0);
 314     return 1;
 315 }