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     char *seqs[NUMATTRS + 1], *vec[MAXARGS];
  63     struct msgs_array msgs = { 0, 0, NULL };
  64     struct msgnum_array nums = { 0, 0, NULL };
  65     struct msgs *mp, *mp2;
  66     register FILE *fp;
  67
  68     done=putzero_done;
  69
  70 #ifdef LOCALE
  71     setlocale(LC_ALL, "");
  72 #endif
  73     invo_name = r1bindex (argv[0], '/');
  74
  75     /* read user profile/context */
  76     context_read();
  77
  78     arguments = getarguments (invo_name, argc, argv, 1);
  79     argp = arguments;
  80
  81     while ((cp = *argp++)) {
  82         if (*cp == '-') {
  83             if (*++cp == '-') {
  84                 vec[vecp++] = --cp;
  85                 goto pattern;
  86             }
  87             switch (smatch (cp, switches)) {
  88             case AMBIGSW:
  89                 ambigsw (cp, switches);
  90                 listsw = 0;     /* HACK */
  91                 done (1);
  92             case UNKWNSW:
  93                 adios (NULL, "-%s unknown", cp);
  94
  95             case HELPSW:
  96                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
  97                           invo_name);
  98                 print_help (buf, switches, 1);
  99                 listsw = 0;     /* HACK */
 100                 done (0);
 101             case VERSIONSW:
 102                 print_version(invo_name);
 103                 listsw = 0;     /* HACK */
 104                 done (0);
 105
 106             case CCSW:
 107             case DATESW:
 108             case FROMSW:
 109             case SUBJSW:
 110             case TOSW:
 111             case DATFDSW:
 112             case AFTRSW:
 113             case BEFRSW:
 114             case SRCHSW:
 115                 vec[vecp++] = --cp;
 116             pattern:
 117                 if (!(cp = *argp++))/* allow -xyz arguments */
 118                     adios (NULL, "missing argument to %s", argp[-2]);
 119                 vec[vecp++] = cp;
 120                 continue;
 121             case OTHRSW:
 122                 adios (NULL, "internal error!");
 123
 124             case ANDSW:
 125             case ORSW:
 126             case NOTSW:
 127             case LBRSW:
 128             case RBRSW:
 129                 vec[vecp++] = --cp;
 130                 continue;
 131
 132             case SEQSW:
 133                 if (!(cp = *argp++) || *cp == '-')
 134                     adios (NULL, "missing argument to %s", argp[-2]);
 135
 136                 /* check if too many sequences specified */
 137                 if (seqp >= NUMATTRS)
 138                     adios (NULL, "too many sequences (more than %d) specified", NUMATTRS);
 139
 140                 if (!seq_nameok (cp))
 141                   done (1);
 142
 143                 seqs[seqp++] = cp;
 144                 continue;
 145             case NSEQSW:
 146                 seqp = 0;
 147                 continue;
 148             case PUBLSW:
 149                 publicsw = 1;
 150                 continue;
 151             case NPUBLSW:
 152                 publicsw = 0;
 153                 continue;
 154             case ZEROSW:
 155                 zerosw++;
 156                 continue;
 157             case NZEROSW:
 158                 zerosw = 0;
 159                 continue;
 160
 161             case LISTSW:
 162                 listsw = 1;
 163                 continue;
 164             case NLISTSW:
 165                 listsw = 0;
 166                 continue;
 167             }
 168         }
 169         if (*cp == '+' || *cp == '@') {
 170             if (folder)
 171                 adios (NULL, "only one folder at a time!");
 172             else
 173                 folder = pluspath (cp);
 174         } else
 175                 app_msgarg(&msgs, cp);
 176     }
 177     vec[vecp] = NULL;
 178
 179     if (!context_find ("path"))
 180         free (path ("./", TFOLDER));
 181
 182     /*
 183      * If we didn't specify which messages to search,
 184      * then search the whole folder.
 185      */
 186     if (!msgs.size)
 187         app_msgarg(&msgs, "all");
 188
 189     if (!folder)
 190         folder = getfolder (1);
 191     maildir = m_maildir (folder);
 192
 193     if (chdir (maildir) == NOTOK)
 194         adios (maildir, "unable to change directory to");
 195
 196     /* read folder and create message structure */
 197     if (!(mp = folder_read (folder, 0)))
 198         adios (NULL, "unable to read folder %s", folder);
 199
 200     /* check for empty folder */
 201     if (mp->nummsg == 0)
 202         adios (NULL, "no messages in %s", folder);
 203
 204     /* parse all the message ranges/sequences and set SELECTED */
 205     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 206         if (!m_convert (mp, msgs.msgs[msgnum]))
 207             done (1);
 208
 209     /*
 210      * If we aren't saving the results to a sequence,
 211      * we default to list the results.
 212      */
 213     if (listsw == -1)
 214         listsw = !seqp;
 215
 216     if (publicsw == 1 && is_readonly(mp))
 217         adios (NULL, "folder %s is read-only, so -public not allowed", folder);
 218
 219     if (!pcompile (vec, NULL))
 220         done (1);
 221
 222     /* If printing message numbers to standard out, force line buffering on.
 223      */
 224     if (listsw)
 225         setvbuf (stdout, NULL, _IOLBF, 0);
 226
 227     /*
 228      * Scan through all the SELECTED messages and check for a
 229      * match.  If there is NOT a match, then add it to a list to
 230      * remove from the final sequence (it will make sense later)
 231      */
 232     for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
 233         if (is_selected (mp, msgnum)) {
 234             if ((fp = fopen (cp = m_name (msgnum), "r")) == NULL)
 235                 admonish (cp, "unable to read message");
 236             if (fp && pmatches (fp, msgnum, 0L, 0L)) {
 237                 if (listsw)
 238                     printf ("%s\n", m_name (msgnum));
 239             } else {
 240                 app_msgnum(&nums, msgnum);
 241             }
 242             if (fp)
 243                 fclose (fp);
 244         }
 245     }
 246
 247     if (nums.size >= mp->numsel)
 248         adios (NULL, "no messages match specification");
 249
 250     seqs[seqp] = NULL;
 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     for (seqp = 0; seqs[seqp]; seqp++)
 284         if (!seq_addsel (mp2, seqs[seqp], publicsw, zerosw))
 285             done (1);
 286
 287     /*
 288      * Print total matched if not printing each matched message number.
 289      */
 290     if (!listsw) {
 291         printf ("%d hit%s\n", mp2->numsel, mp2->numsel == 1 ? "" : "s");
 292     }
 293
 294     context_replace (pfolder, folder);  /* update current folder         */
 295     seq_save (mp2);                     /* synchronize message sequences */
 296     context_save ();                    /* save the context file         */
 297     folder_free (mp);                   /* free folder/message structure */
 298     folder_free (mp2);
 299     done (0);
 300     return 1;
 301 }
 302
 303
 304 static void
 305 putzero_done (int status)
 306 {
 307     if (listsw && status && !isatty (fileno (stdout)))
 308         printf ("0\n");
 309     exit (status);
 310 }