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

   1 /* pick.c -- search for messages by content
   2  *
   3  * This code is Copyright (c) 2002, 2008, 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 <h/tws.h>
  10 #include <h/picksbr.h>
  11 #include <h/utils.h>
  12 #include "../sbr/m_maildir.h"
  13
  14 #define PICK_SWITCHES \
  15     X("reverse", 0, REVSW) \
  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     FILE *fp;
  69     int debug = 0;
  70     int reverse = 0;
  71     int start, end, inc;
  72
  73     if (nmh_init(argv[0], 1)) { return 1; }
  74
  75     done=putzero_done;
  76
  77     /* Deprecated.  Use -debug instead. */
  78     if ((cp = getenv ("MHPDEBUG")) && *cp)
  79         ++debug;
  80
  81     arguments = getarguments (invo_name, argc, argv, 1);
  82     argp = arguments;
  83
  84     while ((cp = *argp++)) {
  85         if (*cp == '-') {
  86             if (*++cp == '-') {
  87                 vec[vecp++] = --cp;
  88                 goto pattern;
  89             }
  90             switch (smatch (cp, switches)) {
  91             case AMBIGSW:
  92                 ambigsw (cp, switches);
  93                 listsw = 0;     /* HACK */
  94                 done (1);
  95             case UNKWNSW:
  96                 adios (NULL, "-%s unknown", cp);
  97
  98             case HELPSW:
  99                 snprintf (buf, sizeof(buf), "%s [+folder] [msgs] [switches]",
 100                           invo_name);
 101                 print_help (buf, switches, 1);
 102                 listsw = 0;     /* HACK */
 103                 done (0);
 104             case VERSIONSW:
 105                 print_version(invo_name);
 106                 listsw = 0;     /* HACK */
 107                 done (0);
 108
 109             case REVSW:
 110                 reverse = 1;
 111                 continue;
 112
 113             case CCSW:
 114             case DATESW:
 115             case FROMSW:
 116             case SUBJSW:
 117             case TOSW:
 118             case DATFDSW:
 119             case AFTRSW:
 120             case BEFRSW:
 121             case SRCHSW:
 122                 vec[vecp++] = --cp;
 123             pattern:
 124                 if (!(cp = *argp++))/* allow -xyz arguments */
 125                     adios (NULL, "missing argument to %s", argp[-2]);
 126                 vec[vecp++] = cp;
 127                 continue;
 128             case OTHRSW:
 129                 adios (NULL, "internal error!");
 130
 131             case ANDSW:
 132             case ORSW:
 133             case NOTSW:
 134             case LBRSW:
 135             case RBRSW:
 136                 vec[vecp++] = --cp;
 137                 continue;
 138
 139             case SEQSW:
 140                 if (!(cp = *argp++) || *cp == '-')
 141                     adios (NULL, "missing argument to %s", argp[-2]);
 142
 143                 if (!seq_nameok (cp))
 144                   done (1);
 145
 146                 svector_push_back (seqs, cp);
 147                 seqp++;
 148                 continue;
 149             case NSEQSW:
 150                 seqp = 0;
 151                 continue;
 152             case PUBLSW:
 153                 publicsw = 1;
 154                 continue;
 155             case NPUBLSW:
 156                 publicsw = 0;
 157                 continue;
 158             case ZEROSW:
 159                 zerosw++;
 160                 continue;
 161             case NZEROSW:
 162                 zerosw = 0;
 163                 continue;
 164
 165             case LISTSW:
 166                 listsw = 1;
 167                 continue;
 168             case NLISTSW:
 169                 listsw = 0;
 170                 continue;
 171
 172             case DEBUGSW:
 173                 ++debug;
 174                 continue;
 175             }
 176         }
 177         if (*cp == '+' || *cp == '@') {
 178             if (folder)
 179                 adios (NULL, "only one folder at a time!");
 180             else
 181                 folder = pluspath (cp);
 182         } else
 183                 app_msgarg(&msgs, cp);
 184     }
 185     vec[vecp] = NULL;
 186
 187     if (!context_find ("path"))
 188         free (path ("./", TFOLDER));
 189
 190     /*
 191      * If we didn't specify which messages to search,
 192      * then search the whole folder.
 193      */
 194     if (!msgs.size)
 195         app_msgarg(&msgs, "all");
 196
 197     if (!folder)
 198         folder = getfolder (1);
 199     maildir = m_maildir (folder);
 200
 201     if (chdir (maildir) == NOTOK)
 202         adios (maildir, "unable to change directory to");
 203
 204     /* read folder and create message structure */
 205     if (!(mp = folder_read (folder, 0)))
 206         adios (NULL, "unable to read folder %s", folder);
 207
 208     /* check for empty folder */
 209     if (mp->nummsg == 0)
 210         adios (NULL, "no messages in %s", folder);
 211
 212     /* parse all the message ranges/sequences and set SELECTED */
 213     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 214         if (!m_convert (mp, msgs.msgs[msgnum]))
 215             done (1);
 216
 217     /*
 218      * If we aren't saving the results to a sequence,
 219      * we default to list the results.
 220      */
 221     if (listsw == -1)
 222         listsw = !seqp;
 223
 224     if (publicsw == 1 && is_readonly(mp))
 225         adios (NULL, "folder %s is read-only, so -public not allowed", folder);
 226
 227     if (!pcompile (vec, NULL))
 228         done (1);
 229
 230     /* If printing message numbers to standard out, force line buffering on.
 231      */
 232     if (listsw)
 233         setvbuf (stdout, NULL, _IOLBF, 0);
 234
 235     /*
 236      * Scan through all the SELECTED messages and check for a
 237      * match.  If there is NOT a match, then add it to a list to
 238      * remove from the final sequence (it will make sense later)
 239      */
 240     if (!reverse) { /* Overflow or underflow is fine. */
 241         start = mp->lowsel;
 242         end = mp->hghsel + 1;
 243         inc = 1;
 244     } else {
 245         start = mp->hghsel;
 246         end = mp->lowsel - 1;
 247         inc = -1;
 248     }
 249     for (msgnum = start; msgnum != end; msgnum += inc) {
 250         if (is_selected (mp, msgnum)) {
 251             if ((fp = fopen (cp = m_name (msgnum), "r")) == NULL)
 252                 admonish (cp, "unable to read message");
 253             if (fp && pmatches (fp, msgnum, 0L, 0L, debug)) {
 254                 if (listsw)
 255                     puts(m_name (msgnum));
 256             } else {
 257                 app_msgnum(&nums, msgnum);
 258             }
 259             if (fp)
 260                 fclose (fp);
 261         }
 262     }
 263
 264     if (nums.size >= mp->numsel)
 265         adios (NULL, "no messages match specification");
 266
 267     /*
 268      * So, what's happening here?
 269      *
 270      * - Re-read the folder and sequences, but with locking.
 271      * - Recreate the original set of selected messages from the command line
 272      * - Set the previous sequence
 273      * - Remove any messages that did NOT result in hits from the selection
 274      * - Add to any new sequences
 275      */
 276
 277     if (!(mp2 = folder_read (folder, 1)))
 278         adios (NULL, "unable to reread folder %s", folder);
 279
 280     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 281         if (!m_convert (mp2, msgs.msgs[msgnum]))
 282             done (1);
 283     seq_setprev (mp2);  /* set the previous-sequence */
 284
 285     /*
 286      * Nums contains a list of messages that we did NOT match.  Remove
 287      * that from the selection.
 288      */
 289
 290     for (msgnum = 0; msgnum < nums.size; msgnum++) {
 291         unset_selected(mp2, nums.msgnums[msgnum]);
 292         mp2->numsel--;
 293     }
 294
 295     /*
 296      * Add the matching messages to sequences
 297      */
 298     if (seqp > 0) {
 299         for (seqp = 0; seqp < svector_size (seqs); seqp++)
 300             if (!seq_addsel (mp2, svector_at (seqs, seqp), publicsw, zerosw))
 301                 done (1);
 302     }
 303
 304     /*
 305      * Print total matched if not printing each matched message number.
 306      */
 307     if (!listsw) {
 308         printf ("%d hit%s\n", mp2->numsel, PLURALS(mp2->numsel));
 309     }
 310
 311     svector_free (seqs);
 312     context_replace (pfolder, folder);  /* update current folder         */
 313     seq_save (mp2);                     /* synchronize message sequences */
 314     context_save ();                    /* save the context file         */
 315     folder_free (mp);                   /* free folder/message structure */
 316     folder_free (mp2);
 317     done (0);
 318     return 1;
 319 }
 320
 321
 322 static void NORETURN
 323 putzero_done (int status)
 324 {
 325     if (listsw && status && !isatty (fileno (stdout)))
 326         puts("0");
 327     exit (status);
 328 }