lib/libc/citrus/citrus_lookup_factory.c

   1 /* $NetBSD: src/lib/libc/citrus/citrus_lookup_factory.c,v 1.4 2003/10/27 00:12:42 lukem Exp $ */
   2 /* $DragonFly: src/lib/libc/citrus/citrus_lookup_factory.c,v 1.2 2008/04/10 10:21:01 hasso Exp $ */
   3
   4 /*-
   5  * Copyright (c)2003 Citrus Project,
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/endian.h>
  31 #include <assert.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #include <errno.h>
  36 #include <ctype.h>
  37 #include <limits.h>
  38
  39 #include "citrus_namespace.h"
  40 #include "citrus_region.h"
  41 #include "citrus_bcs.h"
  42 #include "citrus_db_factory.h"
  43 #include "citrus_db_hash.h"
  44 #include "citrus_lookup_factory.h"
  45 #include "citrus_lookup_file.h"
  46
  47 #define T_COMM '#'
  48 static int
  49 convert_line(struct _citrus_db_factory *df, const char *line, size_t len)
  50 {
  51         const char *p;
  52         char key[LINE_MAX], data[LINE_MAX];
  53
  54         /* cut off trailing comment */
  55         p = memchr(line, T_COMM, len);
  56         if (p)
  57                 len = p - line;
  58
  59         /* key */
  60         line = _bcs_skip_ws_len(line, &len);
  61         if (len == 0)
  62                 return 0;
  63         p = _bcs_skip_nonws_len(line, &len);
  64         if (p==line)
  65                 return 0;
  66         snprintf(key, sizeof(key), "%.*s", (int)(p-line), line);
  67         _bcs_convert_to_lower(key);
  68
  69         /* data */
  70         line = _bcs_skip_ws_len(p, &len);
  71         _bcs_trunc_rws_len(line, &len);
  72         snprintf(data, sizeof(data), "%.*s", (int)len, line);
  73
  74         return _db_factory_addstr_by_s(df, key, data);
  75 }
  76
  77 static int
  78 dump_db(struct _citrus_db_factory *df, struct _region *r)
  79 {
  80         size_t size;
  81         void *ptr;
  82
  83         size = _db_factory_calc_size(df);
  84         ptr = malloc(size);
  85         if (ptr == NULL)
  86                 return errno;
  87         _region_init(r, ptr, size);
  88
  89         return _db_factory_serialize(df, _CITRUS_LOOKUP_MAGIC, r);
  90 }
  91
  92 int
  93 _citrus_lookup_factory_convert(FILE *out, FILE *in)
  94 {
  95         struct _citrus_db_factory *df;
  96         struct _region r;
  97         char *line;
  98         size_t size;
  99         int ret;
 100
 101         ret = _db_factory_create(&df, &_db_hash_std, NULL);
 102         if (ret)
 103                 return ret;
 104
 105         while ((line = fgetln(in, &size)) != NULL)
 106                 if ((ret = convert_line(df, line, size))) {
 107                         _db_factory_free(df);
 108                         return ret;
 109                 }
 110
 111         ret = dump_db(df, &r);
 112         _db_factory_free(df);
 113         if (ret)
 114                 return ret;
 115
 116         if (fwrite(_region_head(&r), _region_size(&r), 1, out) != 1)
 117                 return errno;
 118
 119         return 0;
 120 }