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/done.h"
  12 #include <h/utils.h>
  13 #include "sbr/m_maildir.h"
  14
  15 #define PICK_SWITCHES \
  16     X("reverse", 0, REVSW) \
  17     X("and", 0, ANDSW) \
  18     X("or", 0, ORSW) \
  19     X("not", 0, NOTSW) \
  20     X("lbrace", 0, LBRSW) \
  21     X("rbrace", 0, RBRSW) \
  22     X("cc  pattern", 0, CCSW) \
  23     X("date  pattern", 0, DATESW) \
  24     X("from  pattern", 0, FROMSW) \
  25     X("search  pattern", 0, SRCHSW) \
  26     X("subject  pattern", 0, SUBJSW) \
  27     X("to  pattern", 0, TOSW) \
  28     X("-othercomponent  pattern", 0, OTHRSW) \
  29     X("after date", 0, AFTRSW) \
  30     X("before date", 0, BEFRSW) \
  31     X("datefield field", 5, DATFDSW) \
  32     X("sequence name", 0, SEQSW) \
  33     X("nosequence", 0, NSEQSW) \
  34     X("public", 0, PUBLSW) \
  35     X("nopublic", 0, NPUBLSW) \
  36     X("zero", 0, ZEROSW) \
  37     X("nozero", 0, NZEROSW) \
  38     X("list", 0, LISTSW) \
  39     X("nolist", 0, NLISTSW) \
  40     X("debug", 0, DEBUGSW) \
  41     X("version", 0, VERSIONSW) \
  42     X("help", 0, HELPSW) \
  43
  44 #define X(sw, minchars, id) id,
  45 DEFINE_SWITCH_ENUM(PICK);
  46 #undef X
  47
  48 #define X(sw, minchars, id) { sw, minchars, id },
  49 DEFINE_SWITCH_ARRAY(PICK, switches);
  50 #undef X
  51
  52 static int listsw = -1;
  53
  54 static void putzero_done (int) NORETURN;
  55
  56 int
  57 main (int argc, char **argv)
  58 {
  59     int publicsw = -1, zerosw = 1, vecp = 0;
  60     size_t seqp = 0;
  61     int msgnum;
  62     char *maildir, *folder = NULL, buf[100];
  63     char *cp, **argp, **arguments;
  64     svector_t seqs = svector_create (0);
  65     char *vec[MAXARGS];
  66     struct msgs_array msgs = { 0, 0, NULL };
  67     struct msgnum_array nums = { 0, 0, NULL };
  68     struct msgs *mp, *mp2;
  69     FILE *fp;
  70     int debug = 0;
  71     int reverse = 0;
  72     int start, end, inc;
  73
  74     if (nmh_init(argv[0], 1)) { return 1; }
  75
  76     set_done(putzero_done);
  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 REVSW:
 107                 reverse = 1;
 108                 continue;
 109
 110             case CCSW:
 111             case DATESW:
 112             case FROMSW:
 113             case SUBJSW:
 114             case TOSW:
 115             case DATFDSW:
 116             case AFTRSW:
 117             case BEFRSW:
 118             case SRCHSW:
 119                 vec[vecp++] = --cp;
 120             pattern:
 121                 if (!(cp = *argp++))/* allow -xyz arguments */
 122                     adios (NULL, "missing argument to %s", argp[-2]);
 123                 vec[vecp++] = cp;
 124                 continue;
 125             case OTHRSW:
 126                 adios (NULL, "internal error!");
 127
 128             case ANDSW:
 129             case ORSW:
 130             case NOTSW:
 131             case LBRSW:
 132             case RBRSW:
 133                 vec[vecp++] = --cp;
 134                 continue;
 135
 136             case SEQSW:
 137                 if (!(cp = *argp++) || *cp == '-')
 138                     adios (NULL, "missing argument to %s", argp[-2]);
 139
 140                 if (!seq_nameok (cp))
 141                   done (1);
 142
 143                 svector_push_back (seqs, cp);
 144                 seqp++;
 145                 continue;
 146             case NSEQSW:
 147                 seqp = 0;
 148                 continue;
 149             case PUBLSW:
 150                 publicsw = 1;
 151                 continue;
 152             case NPUBLSW:
 153                 publicsw = 0;
 154                 continue;
 155             case ZEROSW:
 156                 zerosw++;
 157                 continue;
 158             case NZEROSW:
 159                 zerosw = 0;
 160                 continue;
 161
 162             case LISTSW:
 163                 listsw = 1;
 164                 continue;
 165             case NLISTSW:
 166                 listsw = 0;
 167                 continue;
 168
 169             case DEBUGSW:
 170                 ++debug;
 171                 continue;
 172             }
 173         }
 174         if (*cp == '+' || *cp == '@') {
 175             if (folder)
 176                 adios (NULL, "only one folder at a time!");
 177             folder = pluspath (cp);
 178         } else
 179                 app_msgarg(&msgs, cp);
 180     }
 181     vec[vecp] = NULL;
 182
 183     if (!context_find ("path"))
 184         free (path ("./", TFOLDER));
 185
 186     /*
 187      * If we didn't specify which messages to search,
 188      * then search the whole folder.
 189      */
 190     if (!msgs.size)
 191         app_msgarg(&msgs, "all");
 192
 193     if (!folder)
 194         folder = getfolder (1);
 195     maildir = m_maildir (folder);
 196
 197     if (chdir (maildir) == NOTOK)
 198         adios (maildir, "unable to change directory to");
 199
 200     /* read folder and create message structure */
 201     if (!(mp = folder_read (folder, 0)))
 202         adios (NULL, "unable to read folder %s", folder);
 203
 204     /* check for empty folder */
 205     if (mp->nummsg == 0)
 206         adios (NULL, "no messages in %s", folder);
 207
 208     /* parse all the message ranges/sequences and set SELECTED */
 209     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 210         if (!m_convert (mp, msgs.msgs[msgnum]))
 211             done (1);
 212
 213     /*
 214      * If we aren't saving the results to a sequence,
 215      * we default to list the results.
 216      */
 217     if (listsw == -1)
 218         listsw = !seqp;
 219
 220     if (publicsw == 1 && is_readonly(mp))
 221         adios (NULL, "folder %s is read-only, so -public not allowed", folder);
 222
 223     if (!pcompile (vec, NULL))
 224         done (1);
 225
 226     /* If printing message numbers to standard out, force line buffering on.
 227      */
 228     if (listsw)
 229         setvbuf (stdout, NULL, _IOLBF, 0);
 230
 231     /*
 232      * Scan through all the SELECTED messages and check for a
 233      * match.  If there is NOT a match, then add it to a list to
 234      * remove from the final sequence (it will make sense later)
 235      */
 236     if (!reverse) { /* Overflow or underflow is fine. */
 237         start = mp->lowsel;
 238         end = mp->hghsel + 1;
 239         inc = 1;
 240     } else {
 241         start = mp->hghsel;
 242         end = mp->lowsel - 1;
 243         inc = -1;
 244     }
 245     for (msgnum = start; msgnum != end; msgnum += inc) {
 246         if (is_selected (mp, msgnum)) {
 247             if ((fp = fopen (cp = m_name (msgnum), "r")) == NULL)
 248                 admonish (cp, "unable to read message");
 249             if (fp && pmatches (fp, msgnum, 0L, 0L, debug)) {
 250                 if (listsw)
 251                     puts(m_name (msgnum));
 252             } else {
 253                 app_msgnum(&nums, msgnum);
 254             }
 255             if (fp)
 256                 fclose (fp);
 257         }
 258     }
 259
 260     if (nums.size >= mp->numsel)
 261         adios (NULL, "no messages match specification");
 262
 263     /*
 264      * So, what's happening here?
 265      *
 266      * - Re-read the folder and sequences, but with locking.
 267      * - Recreate the original set of selected messages from the command line
 268      * - Set the previous sequence
 269      * - Remove any messages that did NOT result in hits from the selection
 270      * - Add to any new sequences
 271      */
 272
 273     if (!(mp2 = folder_read (folder, 1)))
 274         adios (NULL, "unable to reread folder %s", folder);
 275
 276     for (msgnum = 0; msgnum < msgs.size; msgnum++)
 277         if (!m_convert (mp2, msgs.msgs[msgnum]))
 278             done (1);
 279     seq_setprev (mp2);  /* set the previous-sequence */
 280
 281     /*
 282      * Nums contains a list of messages that we did NOT match.  Remove
 283      * that from the selection.
 284      */
 285
 286     for (msgnum = 0; msgnum < nums.size; msgnum++) {
 287         unset_selected(mp2, nums.msgnums[msgnum]);
 288         mp2->numsel--;
 289     }
 290
 291     /*
 292      * Add the matching messages to sequences
 293      */
 294     if (seqp > 0) {
 295         for (seqp = 0; seqp < svector_size (seqs); seqp++)
 296             if (!seq_addsel (mp2, svector_at (seqs, seqp), publicsw, zerosw))
 297                 done (1);
 298     }
 299
 300     /*
 301      * Print total matched if not printing each matched message number.
 302      */
 303     if (!listsw) {
 304         printf ("%d hit%s\n", mp2->numsel, PLURALS(mp2->numsel));
 305     }
 306
 307     svector_free (seqs);
 308     context_replace (pfolder, folder);  /* update current folder         */
 309     seq_save (mp2);                     /* synchronize message sequences */
 310     context_save ();                    /* save the context file         */
 311     folder_free (mp);                   /* free folder/message structure */
 312     folder_free (mp2);
 313     done (0);
 314     return 1;
 315 }
 316
 317
 318 static void NORETURN
 319 putzero_done (int status)
 320 {
 321     if (listsw && status && !isatty (fileno (stdout)))
 322         puts("0");
 323     exit (status);
 324 }