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