diplodocus.org Git - nmh/blob - uip/pick.c

   1
   2 /*
   3  * pick.c -- search for messages by content
   4  *
   5  * This code is Copyright (c) 2002, 2008, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <h/tws.h>
  12 #include <h/picksbr.h>
  13 #include <h/utils.h>
  14
  15 #define PICK_SWITCHES \
  16     X("and", 0, ANDSW) \
  17     X("or", 0, ORSW) \
  18     X("not", 0, NOTSW) \
  19     X("lbrace", 0, LBRSW) \
  20     X("rbrace", 0, RBRSW) \
  21     X("cc  pattern", 0, CCSW) \
  22     X("date  pattern", 0, DATESW) \
  23     X("from  pattern", 0, FROMSW) \
  24     X("search  pattern", 0, SRCHSW) \
  25     X("subject  pattern", 0, SUBJSW) \
  26     X("to  pattern", 0, TOSW) \
  27     X("-othercomponent  pattern", 0, OTHRSW) \
  28     X("after date", 0, AFTRSW) \
  29     X("before date", 0, BEFRSW) \
  30     X("datefield field", 5, DATFDSW) \
  31     X("sequence name", 0, SEQSW) \
  32     X("nosequence", 0, NSEQSW) \
  33     X("public", 0, PUBLSW) \
  34     X("nopublic", 0, NPUBLSW) \
  35     X("zero", 0, ZEROSW) \
  36     X("nozero", 0, NZEROSW) \
  37     X("list", 0, LISTSW) \
  38     X("nolist", 0, NLISTSW) \
  39     X("version", 0, VERSIONSW) \
  40     X("help", 0, HELPSW) \
  41
  42 #define X(sw, minchars, id) id,
  43 DEFINE_SWITCH_ENUM(PICK);
  44 #undef X
  45
  46 #define X(sw, minchars, id) { sw, minchars, id },
  47 DEFINE_SWITCH_ARRAY(PICK, switches);
  48 #undef X
  49
  50 static int listsw = -1;
  51
  52 static void putzero_done (int) NORETURN;
  53
  54 int
  55 main (int argc, char **argv)
  56 {
  57     int publicsw = -1, zerosw = 1, vecp = 0;
  58     size_t seqp = 0;
  59     int msgnum;
  60     char *maildir, *folder = NULL, buf[100];
  61     char *cp, **argp, **arguments;
  62     svector_t seqs = svector_create (0);
  63     char *vec[MAXARGS];
  64     struct msgs_array msgs = { 0, 0, NULL };
  65     struct msgnum_array nums = { 0, 0, NULL };
  66     struct msgs *mp, *mp2;
  67     register FILE *fp;
  68
  69     if (nmh_init(argv[0], 1)) { return 1; }
  70
  71     done=putzero_done;
  72
  73     arguments = getarguments (invo_name, argc, argv, 1);
  74     argp = arguments;
  75
  76     while ((cp = *argp++)) {
  77         if (*cp == '-') {
  78             if (*++cp == '-') {
  79                 vec[vecp++] = --cp;
  80                 goto pattern;
  81             }
  82             switch (smatch (cp, switches)) {
  83             case AMBIGSW:
  84                 ambigsw (cp, switches);
  85                 listsw = 0;     /* HACK */
  86                 done (1);
  87             case UNKWNSW:
  88                 adios (NULL, "-%s unknown", cp);
  89
  90             case HELPSW:
  91                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  92                           invo_name);
  93                 print_help (buf, switches, 1);
  94                 listsw = 0;     /* HACK */
  95                 done (0);
  96             case VERSIONSW:
  97                 print_version(invo_name);
  98                 listsw = 0;     /* HACK */
  99                 done (0);
 100
 101             case CCSW:
 102             case DATESW:
 103             case FROMSW:
 104             case SUBJSW:
 105             case TOSW:
 106             case DATFDSW:
 107             case AFTRSW:
 108             case BEFRSW:
 109             case SRCHSW:
 110                 vec[vecp++] = --cp;
 111             pattern:
 112                 if (!(cp = *argp++))/* allow -xyz arguments */
 113                     adios (NULL, "missing argument to %s", argp[-2]);
 114                 vec[vecp++] = cp;
 115                 continue;
 116             case OTHRSW:
 117                 adios (NULL, "internal error!");
 118
 119             case ANDSW:
 120             case ORSW:
 121             case NOTSW:
 122             case LBRSW:
 123             case RBRSW:
 124                 vec[vecp++] = --cp;
 125                 continue;
 126
 127             case SEQSW:
 128                 if (!(cp = *argp++) || *cp == '-')
 129                     adios (NULL, "missing argument to %s", argp[-2]);
 130
 131                 if (!seq_nameok (cp))
 132                   done (1);
 133
 134                 svector_push_back (seqs, cp);
 135                 seqp++;
 136                 continue;
 137             case NSEQSW:
 138                 seqp = 0;
 139                 continue;
 140             case PUBLSW:
 141                 publicsw = 1;
 142                 continue;
 143             case NPUBLSW:
 144                 publicsw = 0;
 145                 continue;
 146             case ZEROSW:
 147                 zerosw++;
 148                 continue;
 149             case NZEROSW:
 150                 zerosw = 0;
 151                 continue;
 152
 153             case LISTSW:
 154                 listsw = 1;
 155                 continue;
 156             case NLISTSW:
 157                 listsw = 0;
 158                 continue;
 159             }
 160         }
 161         if (*cp == '+' || *cp == '@') {
 162             if (folder)
 163                 adios (NULL, "only one folder at a time!");
 164             else
 165                 folder = pluspath (cp);
 166         } else
 167                 app_msgarg(&msgs, cp);
 168     }
 169     vec[vecp] = NULL;
 170
 171     if (!context_find ("path"))
 172         free (path ("./", TFOLDER));
 173
 174     /*
 175      * If we didn't specify which messages to search,
 176      * then search the whole folder.
 177      */
 178     if (!msgs.size)
 179         app_msgarg(&msgs, "all");
 180
 181     if (!folder)
 182         folder = getfolder (1);
 183     maildir = m_maildir (folder);
 184
 185     if (chdir (maildir) == NOTOK)
 186         adios (maildir, "unable to change directory to");
 187
 188     /* read folder and create message structure */
 189     if (!(mp = folder_read (folder, 0)))
 190         adios (NULL, "unable to read folder %s", folder);
 191
 192     /* check for empty folder */
 193     if (mp->nummsg == 0)
 194         adios (NULL, "no messages in %s", folder);
 195
 196     /* parse all the message ranges/sequences and set SELECTED */
 197     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 198         if (!m_convert (mp, msgs.msgs[msgnum]))
 199             done (1);
 200
 201     /*
 202      * If we aren't saving the results to a sequence,
 203      * we default to list the results.
 204      */
 205     if (listsw == -1)
 206         listsw = !seqp;
 207
 208     if (publicsw == 1 && is_readonly(mp))
 209         adios (NULL, "folder %s is read-only, so -public not allowed", folder);
 210
 211     if (!pcompile (vec, NULL))
 212         done (1);
 213
 214     /* If printing message numbers to standard out, force line buffering on.
 215      */
 216     if (listsw)
 217         setvbuf (stdout, NULL, _IOLBF, 0);
 218
 219     /*
 220      * Scan through all the SELECTED messages and check for a
 221      * match.  If there is NOT a match, then add it to a list to
 222      * remove from the final sequence (it will make sense later)
 223      */
 224     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 225         if (is_selected (mp, msgnum)) {
 226             if ((fp = fopen (cp = m_name (msgnum), "r")) == NULL)
 227                 admonish (cp, "unable to read message");
 228             if (fp && pmatches (fp, msgnum, 0L, 0L)) {
 229                 if (listsw)
 230                     printf ("%s\n", m_name (msgnum));
 231             } else {
 232                 app_msgnum(&nums, msgnum);
 233             }
 234             if (fp)
 235                 fclose (fp);
 236         }
 237     }
 238
 239     if (nums.size >= mp->numsel)
 240         adios (NULL, "no messages match specification");
 241
 242     /*
 243      * So, what's happening here?
 244      *
 245      * - Re-read the folder and sequences, but with locking.
 246      * - Recreate the original set of selected messages from the command line
 247      * - Set the previous sequence
 248      * - Remove any messages that did NOT result in hits from the selection
 249      * - Add to any new sequences
 250      */
 251
 252     if (!(mp2 = folder_read (folder, 1)))
 253         adios (NULL, "unable to reread folder %s", folder);
 254
 255     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 256         if (!m_convert (mp2, msgs.msgs[msgnum]))
 257             done (1);
 258     seq_setprev (mp2);  /* set the previous-sequence */
 259
 260     /*
 261      * Nums contains a list of messages that we did NOT match.  Remove
 262      * that from the selection.
 263      */
 264
 265     for (msgnum = 0; msgnum < nums.size; msgnum++) {
 266         unset_selected(mp2, nums.msgnums[msgnum]);
 267         mp2->numsel--;
 268     }
 269
 270     /*
 271      * Add the matching messages to sequences
 272      */
 273     if (seqp > 0) {
 274         for (seqp = 0; seqp < svector_size (seqs); seqp++)
 275             if (!seq_addsel (mp2, svector_at (seqs, seqp), publicsw, zerosw))
 276                 done (1);
 277     }
 278
 279     /*
 280      * Print total matched if not printing each matched message number.
 281      */
 282     if (!listsw) {
 283         printf ("%d hit%s\n", mp2->numsel, mp2->numsel == 1 ? "" : "s");
 284     }
 285
 286     svector_free (seqs);
 287     context_replace (pfolder, folder);  /* update current folder         */
 288     seq_save (mp2);                     /* synchronize message sequences */
 289     context_save ();                    /* save the context file         */
 290     folder_free (mp);                   /* free folder/message structure */
 291     folder_free (mp2);
 292     done (0);
 293     return 1;
 294 }
 295
 296
 297 static void
 298 putzero_done (int status)
 299 {
 300     if (listsw && status && !isatty (fileno (stdout)))
 301         printf ("0\n");
 302     exit (status);
 303 }