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("debug", 0, DEBUGSW) \
  40     X("version", 0, VERSIONSW) \
  41     X("help", 0, HELPSW) \
  42
  43 #define X(sw, minchars, id) id,
  44 DEFINE_SWITCH_ENUM(PICK);
  45 #undef X
  46
  47 #define X(sw, minchars, id) { sw, minchars, id },
  48 DEFINE_SWITCH_ARRAY(PICK, switches);
  49 #undef X
  50
  51 static int listsw = -1;
  52
  53 static void putzero_done (int) NORETURN;
  54
  55 int
  56 main (int argc, char **argv)
  57 {
  58     int publicsw = -1, zerosw = 1, vecp = 0;
  59     size_t seqp = 0;
  60     int msgnum;
  61     char *maildir, *folder = NULL, buf[100];
  62     char *cp, **argp, **arguments;
  63     svector_t seqs = svector_create (0);
  64     char *vec[MAXARGS];
  65     struct msgs_array msgs = { 0, 0, NULL };
  66     struct msgnum_array nums = { 0, 0, NULL };
  67     struct msgs *mp, *mp2;
  68     register FILE *fp;
  69     int debug = 0;
  70
  71     if (nmh_init(argv[0], 1)) { return 1; }
  72
  73     done=putzero_done;
  74
  75     /* Deprecated.  Use -debug instead. */
  76     if ((cp = getenv ("MHPDEBUG")) && *cp)
  77         ++debug;
  78
  79     arguments = getarguments (invo_name, argc, argv, 1);
  80     argp = arguments;
  81
  82     while ((cp = *argp++)) {
  83         if (*cp == '-') {
  84             if (*++cp == '-') {
  85                 vec[vecp++] = --cp;
  86                 goto pattern;
  87             }
  88             switch (smatch (cp, switches)) {
  89             case AMBIGSW:
  90                 ambigsw (cp, switches);
  91                 listsw = 0;     /* HACK */
  92                 done (1);
  93             case UNKWNSW:
  94                 adios (NULL, "-%s unknown", cp);
  95
  96             case HELPSW:
  97                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  98                           invo_name);
  99                 print_help (buf, switches, 1);
 100                 listsw = 0;     /* HACK */
 101                 done (0);
 102             case VERSIONSW:
 103                 print_version(invo_name);
 104                 listsw = 0;     /* HACK */
 105                 done (0);
 106
 107             case CCSW:
 108             case DATESW:
 109             case FROMSW:
 110             case SUBJSW:
 111             case TOSW:
 112             case DATFDSW:
 113             case AFTRSW:
 114             case BEFRSW:
 115             case SRCHSW:
 116                 vec[vecp++] = --cp;
 117             pattern:
 118                 if (!(cp = *argp++))/* allow -xyz arguments */
 119                     adios (NULL, "missing argument to %s", argp[-2]);
 120                 vec[vecp++] = cp;
 121                 continue;
 122             case OTHRSW:
 123                 adios (NULL, "internal error!");
 124
 125             case ANDSW:
 126             case ORSW:
 127             case NOTSW:
 128             case LBRSW:
 129             case RBRSW:
 130                 vec[vecp++] = --cp;
 131                 continue;
 132
 133             case SEQSW:
 134                 if (!(cp = *argp++) || *cp == '-')
 135                     adios (NULL, "missing argument to %s", argp[-2]);
 136
 137                 if (!seq_nameok (cp))
 138                   done (1);
 139
 140                 svector_push_back (seqs, cp);
 141                 seqp++;
 142                 continue;
 143             case NSEQSW:
 144                 seqp = 0;
 145                 continue;
 146             case PUBLSW:
 147                 publicsw = 1;
 148                 continue;
 149             case NPUBLSW:
 150                 publicsw = 0;
 151                 continue;
 152             case ZEROSW:
 153                 zerosw++;
 154                 continue;
 155             case NZEROSW:
 156                 zerosw = 0;
 157                 continue;
 158
 159             case LISTSW:
 160                 listsw = 1;
 161                 continue;
 162             case NLISTSW:
 163                 listsw = 0;
 164                 continue;
 165
 166             case DEBUGSW:
 167                 ++debug;
 168                 continue;
 169             }
 170         }
 171         if (*cp == '+' || *cp == '@') {
 172             if (folder)
 173                 adios (NULL, "only one folder at a time!");
 174             else
 175                 folder = pluspath (cp);
 176         } else
 177                 app_msgarg(&msgs, cp);
 178     }
 179     vec[vecp] = NULL;
 180
 181     if (!context_find ("path"))
 182         free (path ("./", TFOLDER));
 183
 184     /*
 185      * If we didn't specify which messages to search,
 186      * then search the whole folder.
 187      */
 188     if (!msgs.size)
 189         app_msgarg(&msgs, "all");
 190
 191     if (!folder)
 192         folder = getfolder (1);
 193     maildir = m_maildir (folder);
 194
 195     if (chdir (maildir) == NOTOK)
 196         adios (maildir, "unable to change directory to");
 197
 198     /* read folder and create message structure */
 199     if (!(mp = folder_read (folder, 0)))
 200         adios (NULL, "unable to read folder %s", folder);
 201
 202     /* check for empty folder */
 203     if (mp->nummsg == 0)
 204         adios (NULL, "no messages in %s", folder);
 205
 206     /* parse all the message ranges/sequences and set SELECTED */
 207     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 208         if (!m_convert (mp, msgs.msgs[msgnum]))
 209             done (1);
 210
 211     /*
 212      * If we aren't saving the results to a sequence,
 213      * we default to list the results.
 214      */
 215     if (listsw == -1)
 216         listsw = !seqp;
 217
 218     if (publicsw == 1 && is_readonly(mp))
 219         adios (NULL, "folder %s is read-only, so -public not allowed", folder);
 220
 221     if (!pcompile (vec, NULL))
 222         done (1);
 223
 224     /* If printing message numbers to standard out, force line buffering on.
 225      */
 226     if (listsw)
 227         setvbuf (stdout, NULL, _IOLBF, 0);
 228
 229     /*
 230      * Scan through all the SELECTED messages and check for a
 231      * match.  If there is NOT a match, then add it to a list to
 232      * remove from the final sequence (it will make sense later)
 233      */
 234     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 235         if (is_selected (mp, msgnum)) {
 236             if ((fp = fopen (cp = m_name (msgnum), "r")) == NULL)
 237                 admonish (cp, "unable to read message");
 238             if (fp && pmatches (fp, msgnum, 0L, 0L, debug)) {
 239                 if (listsw)
 240                     printf ("%s\n", m_name (msgnum));
 241             } else {
 242                 app_msgnum(&nums, msgnum);
 243             }
 244             if (fp)
 245                 fclose (fp);
 246         }
 247     }
 248
 249     if (nums.size >= mp->numsel)
 250         adios (NULL, "no messages match specification");
 251
 252     /*
 253      * So, what's happening here?
 254      *
 255      * - Re-read the folder and sequences, but with locking.
 256      * - Recreate the original set of selected messages from the command line
 257      * - Set the previous sequence
 258      * - Remove any messages that did NOT result in hits from the selection
 259      * - Add to any new sequences
 260      */
 261
 262     if (!(mp2 = folder_read (folder, 1)))
 263         adios (NULL, "unable to reread folder %s", folder);
 264
 265     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 266         if (!m_convert (mp2, msgs.msgs[msgnum]))
 267             done (1);
 268     seq_setprev (mp2);  /* set the previous-sequence */
 269
 270     /*
 271      * Nums contains a list of messages that we did NOT match.  Remove
 272      * that from the selection.
 273      */
 274
 275     for (msgnum = 0; msgnum < nums.size; msgnum++) {
 276         unset_selected(mp2, nums.msgnums[msgnum]);
 277         mp2->numsel--;
 278     }
 279
 280     /*
 281      * Add the matching messages to sequences
 282      */
 283     if (seqp > 0) {
 284         for (seqp = 0; seqp < svector_size (seqs); seqp++)
 285             if (!seq_addsel (mp2, svector_at (seqs, seqp), publicsw, zerosw))
 286                 done (1);
 287     }
 288
 289     /*
 290      * Print total matched if not printing each matched message number.
 291      */
 292     if (!listsw) {
 293         printf ("%d hit%s\n", mp2->numsel, mp2->numsel == 1 ? "" : "s");
 294     }
 295
 296     svector_free (seqs);
 297     context_replace (pfolder, folder);  /* update current folder         */
 298     seq_save (mp2);                     /* synchronize message sequences */
 299     context_save ();                    /* save the context file         */
 300     folder_free (mp);                   /* free folder/message structure */
 301     folder_free (mp2);
 302     done (0);
 303     return 1;
 304 }
 305
 306
 307 static void
 308 putzero_done (int status)
 309 {
 310     if (listsw && status && !isatty (fileno (stdout)))
 311         printf ("0\n");
 312     exit (status);
 313 }