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 lo, hi, 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 msgs *mp;
  65     register FILE *fp;
  66
  67     done=putzero_done;
  68
  69 #ifdef LOCALE
  70     setlocale(LC_ALL, "");
  71 #endif
  72     invo_name = r1bindex (argv[0], '/');
  73
  74     /* read user profile/context */
  75     context_read();
  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 CCSW:
 106             case DATESW:
 107             case FROMSW:
 108             case SUBJSW:
 109             case TOSW:
 110             case DATFDSW:
 111             case AFTRSW:
 112             case BEFRSW:
 113             case SRCHSW:
 114                 vec[vecp++] = --cp;
 115             pattern:
 116                 if (!(cp = *argp++))/* allow -xyz arguments */
 117                     adios (NULL, "missing argument to %s", argp[-2]);
 118                 vec[vecp++] = cp;
 119                 continue;
 120             case OTHRSW:
 121                 adios (NULL, "internal error!");
 122
 123             case ANDSW:
 124             case ORSW:
 125             case NOTSW:
 126             case LBRSW:
 127             case RBRSW:
 128                 vec[vecp++] = --cp;
 129                 continue;
 130
 131             case SEQSW:
 132                 if (!(cp = *argp++) || *cp == '-')
 133                     adios (NULL, "missing argument to %s", argp[-2]);
 134
 135                 /* check if too many sequences specified */
 136                 if (seqp >= NUMATTRS)
 137                     adios (NULL, "too many sequences (more than %d) specified", NUMATTRS);
 138
 139                 if (!seq_nameok (cp))
 140                   done (1);
 141
 142                 seqs[seqp++] = cp;
 143                 continue;
 144             case NSEQSW:
 145                 seqp = 0;
 146                 continue;
 147             case PUBLSW:
 148                 publicsw = 1;
 149                 continue;
 150             case NPUBLSW:
 151                 publicsw = 0;
 152                 continue;
 153             case ZEROSW:
 154                 zerosw++;
 155                 continue;
 156             case NZEROSW:
 157                 zerosw = 0;
 158                 continue;
 159
 160             case LISTSW:
 161                 listsw = 1;
 162                 continue;
 163             case NLISTSW:
 164                 listsw = 0;
 165                 continue;
 166             }
 167         }
 168         if (*cp == '+' || *cp == '@') {
 169             if (folder)
 170                 adios (NULL, "only one folder at a time!");
 171             else
 172                 folder = pluspath (cp);
 173         } else
 174                 app_msgarg(&msgs, cp);
 175     }
 176     vec[vecp] = NULL;
 177
 178     if (!context_find ("path"))
 179         free (path ("./", TFOLDER));
 180
 181     /*
 182      * If we didn't specify which messages to search,
 183      * then search the whole folder.
 184      */
 185     if (!msgs.size)
 186         app_msgarg(&msgs, "all");
 187
 188     if (!folder)
 189         folder = getfolder (1);
 190     maildir = m_maildir (folder);
 191
 192     if (chdir (maildir) == NOTOK)
 193         adios (maildir, "unable to change directory to");
 194
 195     /* read folder and create message structure */
 196     if (!(mp = folder_read (folder)))
 197         adios (NULL, "unable to read folder %s", folder);
 198
 199     /* check for empty folder */
 200     if (mp->nummsg == 0)
 201         adios (NULL, "no messages in %s", folder);
 202
 203     /* parse all the message ranges/sequences and set SELECTED */
 204     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 205         if (!m_convert (mp, msgs.msgs[msgnum]))
 206             done (1);
 207     seq_setprev (mp);   /* set the previous-sequence */
 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     lo = mp->lowsel;
 223     hi = mp->hghsel;
 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 the message does not match, then unselect it.
 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)) {
 239                 if (msgnum < lo)
 240                     lo = msgnum;
 241                 if (msgnum > hi)
 242                     hi = msgnum;
 243
 244                 if (listsw)
 245                     printf ("%s\n", m_name (msgnum));
 246             } else {
 247                 /* if it doesn't match, then unselect it */
 248                 unset_selected (mp, msgnum);
 249                 mp->numsel--;
 250             }
 251             if (fp)
 252                 fclose (fp);
 253         }
 254     }
 255
 256     mp->lowsel = lo;
 257     mp->hghsel = hi;
 258
 259     if (mp->numsel <= 0)
 260         adios (NULL, "no messages match specification");
 261
 262     seqs[seqp] = NULL;
 263
 264     /*
 265      * Add the matching messages to sequences
 266      */
 267     for (seqp = 0; seqs[seqp]; seqp++)
 268         if (!seq_addsel (mp, seqs[seqp], publicsw, zerosw))
 269             done (1);
 270
 271     /*
 272      * Print total matched if not printing each matched message number.
 273      */
 274     if (!listsw) {
 275         printf ("%d hit%s\n", mp->numsel, mp->numsel == 1 ? "" : "s");
 276     }
 277
 278     context_replace (pfolder, folder);  /* update current folder         */
 279     seq_save (mp);                      /* synchronize message sequences */
 280     context_save ();                    /* save the context file         */
 281     folder_free (mp);                   /* free folder/message structure */
 282     done (0);
 283     return 1;
 284 }
 285
 286
 287 static void
 288 putzero_done (int status)
 289 {
 290     if (listsw && status && !isatty (fileno (stdout)))
 291         printf ("0\n");
 292     exit (status);
 293 }