diff options
Diffstat (limited to 'lib/libc/iconv/citrus_esdb.c')
| -rw-r--r-- | lib/libc/iconv/citrus_esdb.c | 374 |
1 files changed, 374 insertions, 0 deletions
diff --git a/lib/libc/iconv/citrus_esdb.c b/lib/libc/iconv/citrus_esdb.c new file mode 100644 index 0000000..578cbc1 --- /dev/null +++ b/lib/libc/iconv/citrus_esdb.c @@ -0,0 +1,374 @@ +/* $FreeBSD$ */ +/* $NetBSD: citrus_esdb.c,v 1.5 2008/02/09 14:56:20 junyoung Exp $ */ + +/*- + * Copyright (c)2003 Citrus Project, + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +#include <sys/types.h> + +#include <assert.h> +#include <errno.h> +#include <limits.h> +#include <paths.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "citrus_namespace.h" +#include "citrus_types.h" +#include "citrus_bcs.h" +#include "citrus_region.h" +#include "citrus_memstream.h" +#include "citrus_mmap.h" +#include "citrus_lookup.h" +#include "citrus_db.h" +#include "citrus_db_hash.h" +#include "citrus_esdb.h" +#include "citrus_esdb_file.h" + +#define ESDB_DIR "esdb.dir" +#define ESDB_ALIAS "esdb.alias" + +/* + * _citrus_esdb_alias: + * resolve encoding scheme name aliases. + */ +const char * +_citrus_esdb_alias(const char *esname, char *buf, size_t bufsize) +{ + + return (_lookup_alias(_PATH_ESDB "/" ESDB_ALIAS, esname, buf, bufsize, + _LOOKUP_CASE_IGNORE)); +} + + +/* + * conv_esdb: + * external representation -> local structure. + */ +static int +conv_esdb(struct _citrus_esdb *esdb, struct _region *fr) +{ + struct _citrus_db *db; + const char *str; + char buf[100]; + uint32_t csid, i, num_charsets, tmp, version; + int ret; + + /* open db */ + ret = _db_open(&db, fr, _CITRUS_ESDB_MAGIC, &_db_hash_std, NULL); + if (ret) + goto err0; + + /* check version */ + ret = _db_lookup32_by_s(db, _CITRUS_ESDB_SYM_VERSION, &version, NULL); + if (ret) + goto err1; + switch (version) { + case 0x00000001: + /* current version */ + /* initial version */ + break; + default: + ret = EFTYPE; + goto err1; + } + + /* get encoding/variable */ + ret = _db_lookupstr_by_s(db, _CITRUS_ESDB_SYM_ENCODING, &str, NULL); + if (ret) + goto err1; + esdb->db_encname = strdup(str); + if (esdb->db_encname == NULL) { + ret = errno; + goto err1; + } + + esdb->db_len_variable = 0; + esdb->db_variable = NULL; + ret = _db_lookupstr_by_s(db, _CITRUS_ESDB_SYM_VARIABLE, &str, NULL); + if (ret == 0) { + esdb->db_len_variable = strlen(str) + 1; + esdb->db_variable = strdup(str); + if (esdb->db_variable == NULL) { + ret = errno; + goto err2; + } + } else if (ret != ENOENT) + goto err2; + + /* get number of charsets */ + ret = _db_lookup32_by_s(db, _CITRUS_ESDB_SYM_NUM_CHARSETS, + &num_charsets, NULL); + if (ret) + goto err3; + esdb->db_num_charsets = num_charsets; + + /* get invalid character */ + ret = _db_lookup32_by_s(db, _CITRUS_ESDB_SYM_INVALID, &tmp, NULL); + if (ret == 0) { + esdb->db_use_invalid = 1; + esdb->db_invalid = tmp; + } else if (ret == ENOENT) + esdb->db_use_invalid = 0; + else + goto err3; + + /* get charsets */ + esdb->db_charsets = malloc(num_charsets * sizeof(*esdb->db_charsets)); + if (esdb->db_charsets == NULL) { + ret = errno; + goto err3; + } + for (i = 0; i < num_charsets; i++) { + snprintf(buf, sizeof(buf), + _CITRUS_ESDB_SYM_CSID_PREFIX "%d", i); + ret = _db_lookup32_by_s(db, buf, &csid, NULL); + if (ret) + goto err4; + esdb->db_charsets[i].ec_csid = csid; + + snprintf(buf, sizeof(buf), + _CITRUS_ESDB_SYM_CSNAME_PREFIX "%d", i); + ret = _db_lookupstr_by_s(db, buf, &str, NULL); + if (ret) + goto err4; + esdb->db_charsets[i].ec_csname = strdup(str); + if (esdb->db_charsets[i].ec_csname == NULL) { + ret = errno; + goto err4; + } + } + + _db_close(db); + return (0); + +err4: + for (; i > 0; i--) + free(esdb->db_charsets[i - 1].ec_csname); + free(esdb->db_charsets); +err3: + free(esdb->db_variable); +err2: + free(esdb->db_encname); +err1: + _db_close(db); + if (ret == ENOENT) + ret = EFTYPE; +err0: + return (ret); +} + +/* + * _citrus_esdb_open: + * open an ESDB file. + */ +int +_citrus_esdb_open(struct _citrus_esdb *db, const char *esname) +{ + struct _region fr; + const char *realname, *encfile; + char buf1[PATH_MAX], buf2[PATH_MAX], path[PATH_MAX]; + int ret; + + snprintf(path, sizeof(path), "%s/%s", _PATH_ESDB, ESDB_ALIAS); + realname = _lookup_alias(path, esname, buf1, sizeof(buf1), + _LOOKUP_CASE_IGNORE); + + snprintf(path, sizeof(path), "%s/%s", _PATH_ESDB, ESDB_DIR); + encfile = _lookup_simple(path, realname, buf2, sizeof(buf2), + _LOOKUP_CASE_IGNORE); + if (encfile == NULL) + return (ENOENT); + + /* open file */ + snprintf(path, sizeof(path), "%s/%s", _PATH_ESDB, encfile); + ret = _map_file(&fr, path); + if (ret) + return (ret); + + ret = conv_esdb(db, &fr); + + _unmap_file(&fr); + + return (ret); +} + +/* + * _citrus_esdb_close: + * free an ESDB. + */ +void +_citrus_esdb_close(struct _citrus_esdb *db) +{ + + for (int i = 0; i < db->db_num_charsets; i++) + free(db->db_charsets[i].ec_csname); + db->db_num_charsets = 0; + free(db->db_charsets); db->db_charsets = NULL; + free(db->db_encname); db->db_encname = NULL; + db->db_len_variable = 0; + free(db->db_variable); db->db_variable = NULL; +} + +/* + * _citrus_esdb_free_list: + * free the list. + */ +void +_citrus_esdb_free_list(char **list, size_t num) +{ + + for (size_t i = 0; i < num; i++) + free(list[i]); + free(list); +} + +/* + * _citrus_esdb_get_list: + * get esdb entries. + */ +int +_citrus_esdb_get_list(char ***rlist, size_t *rnum, bool sorted) +{ + struct _citrus_lookup *cla, *cld; + struct _region key, data; + char **list, **q; + char buf[PATH_MAX]; + size_t num; + int ret; + + num = 0; + + ret = _lookup_seq_open(&cla, _PATH_ESDB "/" ESDB_ALIAS, + _LOOKUP_CASE_IGNORE); + if (ret) + goto quit0; + + ret = _lookup_seq_open(&cld, _PATH_ESDB "/" ESDB_DIR, + _LOOKUP_CASE_IGNORE); + if (ret) + goto quit1; + + /* count number of entries */ + num = _lookup_get_num_entries(cla) + _lookup_get_num_entries(cld); + + _lookup_seq_rewind(cla); + _lookup_seq_rewind(cld); + + /* allocate list pointer space */ + list = malloc(num * sizeof(char *)); + num = 0; + if (list == NULL) { + ret = errno; + goto quit3; + } + + /* get alias entries */ + while ((ret = _lookup_seq_next(cla, &key, &data)) == 0) { + if (sorted) + snprintf(buf, sizeof(buf), "%.*s/%.*s", + (int)_region_size(&data), + (const char *)_region_head(&data), + (int)_region_size(&key), + (const char *)_region_head(&key)); + else + snprintf(buf, sizeof(buf), "%.*s/%.*s", + (int)_region_size(&data), + (const char *)_region_head(&data), + (int)_region_size(&key), + (const char *)_region_head(&key)); + _bcs_convert_to_upper(buf); + list[num] = strdup(buf); + if (list[num] == NULL) { + ret = errno; + goto quit3; + } + num++; + } + if (ret != ENOENT) + goto quit3; + /* get dir entries */ + while ((ret = _lookup_seq_next(cld, &key, &data)) == 0) { + if (!sorted) + snprintf(buf, sizeof(buf), "%.*s", + (int)_region_size(&key), + (const char *)_region_head(&key)); + else { + /* check duplicated entry */ + char *p; + char buf1[PATH_MAX]; + + snprintf(buf1, sizeof(buf1), "%.*s", + (int)_region_size(&data), + (const char *)_region_head(&data)); + if ((p = strchr(buf1, '/')) != NULL) + memcpy(buf1, p + 1, strlen(p) - 1); + if ((p = strstr(buf1, ".esdb")) != NULL) + *p = '\0'; + snprintf(buf, sizeof(buf), "%s/%.*s", buf1, + (int)_region_size(&key), + (const char *)_region_head(&key)); + } + _bcs_convert_to_upper(buf); + ret = _lookup_seq_lookup(cla, buf, NULL); + if (ret) { + if (ret != ENOENT) + goto quit3; + /* not duplicated */ + list[num] = strdup(buf); + if (list[num] == NULL) { + ret = errno; + goto quit3; + } + num++; + } + } + if (ret != ENOENT) + goto quit3; + + ret = 0; + /* XXX: why reallocing the list space posteriorly? + shouldn't be done earlier? */ + q = realloc(list, num * sizeof(char *)); + if (!q) { + ret = ENOMEM; + goto quit3; + } + list = q; + *rlist = list; + *rnum = num; +quit3: + if (ret) + _citrus_esdb_free_list(list, num); + _lookup_seq_close(cld); +quit1: + _lookup_seq_close(cla); +quit0: + return (ret); +} |
