1 /* database.c -- database module.
2 Copyright (C) 2003, 2004
3 National Institute of Advanced Industrial Science and Technology (AIST)
4 Registration Number H15PRO112
6 This file is part of the m17n library.
8 The m17n library is free software; you can redistribute it and/or
9 modify it under the terms of the GNU Lesser General Public License
10 as published by the Free Software Foundation; either version 2.1 of
11 the License, or (at your option) any later version.
13 The m17n library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
18 You should have received a copy of the GNU Lesser General Public
19 License along with the m17n library; if not, write to the Free
20 Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24 @addtogroup m17nDatabase
25 @brief The m17n database and API for it.
27 The m17n library acquires various kinds of information
28 from data in the <i> m17n database</i> on demand. Application
29 programs can also add/load their original data to/from the m17n
30 database by setting the variable #mdatabase_dir to an
31 application-specific directory and storing data in it. Users can
32 overwrite those data by storing preferable data in the directory
33 specified by the environment variable "M17NDIR", or if it is not
34 set, in the directory "~/.m17n.d".
36 The m17n database contains multiple heterogeneous data, and each
37 data is identified by four tags; TAG0, TAG1, TAG2, TAG3. Each tag
40 TAG0 specifies the type of data stored in the database as below.
43 If TAG0 is #Mchar_table, the data is of the @e chartable @e
44 type and provides information about each character. In this case,
45 TAG1 specifies the type of the information and must be #Msymbol,
46 #Minteger, #Mstring, #Mtext, or #Mplist. TAG2 and TAG3 can be any
50 If TAG0 is #Mcharset, the data is of the @e charset @e type
51 and provides a decode/encode mapping table for a charset. In this
52 case, TAG1 must be a symbol representing a charset. TAG2 and TAG3
56 If TAG0 is neither #Mchar_table nor #Mcharset, the data is of
57 the @e plist @e type. See the documentation of the
58 mdatabase_load () function for the details.
59 In this case, TAG1, TAG2, and TAG3 can be any symbols.
61 The notation \<TAG0, TAG1, TAG2, TAG3\> means a data with those
64 Application programs first calls the mdatabase_find () function to
65 get a pointer to an object of the type #MDatabase. That object
66 holds information about the specified data. When it is
67 successfully returned, the mdatabase_load () function loads the
68 data. The implementation of the structure #MDatabase is
69 concealed from application programs.
73 @addtogroup m17nDatabase
74 @brief m17n ¥Ç¡¼¥¿¥Ù¡¼¥¹¤Ë¤È¤½¤ì¤Ë´Ø¤¹¤ë API.
76 m17n ¥é¥¤¥Ö¥é¥ê¤ÏɬÍפ˱þ¤¸¤ÆưŪ¤Ë @e m17n @e ¥Ç¡¼¥¿¥Ù¡¼¥¹
77 ¤«¤é¾ðÊó¤ò¼èÆÀ¤¹¤ë¡£¤Þ¤¿¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¥×¥í¥°¥é¥à¤â¡¢Æȼ«¤Î¥Ç¡¼¥¿¤ò
78 m17n ¥Ç¡¼¥¿¥Ù¡¼¥¹¤ËÄɲä·¡¢¤½¤ì¤òưŪ¤Ë¼èÆÀ¤¹¤ë¤³¤È¤¬¤Ç¤¤ë¡£
79 ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¥×¥í¥°¥é¥à¤¬Æȼ«¤Î¥Ç¡¼¥¿¤òÄɲᦼèÆÀ¤¹¤ë¤Ë¤Ï¡¢ÊÑ¿ô
80 #mdatabase_dir ¤Ë¤½¤Î¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¸ÇͤΥǥ£¥ì¥¯¥È¥ê¤ò¥»¥Ã¥È¤·¡¢
81 ¤½¤ÎÃæ¤Ë¥Ç¡¼¥¿¤ò³ÊǼ¤¹¤ë¡£¥æ¡¼¥¶¤¬¤½¤Î¥Ç¡¼¥¿¤ò¥ª¡¼¥Ð¡¼¥é¥¤¥È¤·¤¿¤¤
82 ¤È¤¤Ï¡¢´Ä¶ÊÑ¿ô "M17NDIR" ¤Ç»ØÄꤵ¤ì¤ë¥Ç¥£¥ì¥¯¥È¥ê¡Ê»ØÄꤵ¤ì¤Æ¤¤¤Ê
83 ¤¤¤È¤¤Ï "~/.m17n.d" ¤È¤¤¤¦¥Ç¥£¥ì¥¯¥È¥ê¡Ë¤ËÊ̤Υǡ¼¥¿¤òÃÖ¤¯¡£
86 ¥Ç¡¼¥¿¥Ù¡¼¥¹¤Ë¤ÏÊ£¿ô¤Î¿Íͤʥǡ¼¥¿¤¬´Þ¤Þ¤ì¤Æ¤ª¤ê¡¢³Æ¥Ç¡¼¥¿¤Ï
87 TAG0, TAG1, TAG2, TAG3¡Ê¤¹¤Ù¤Æ¥·¥ó¥Ü¥ë¡Ë¤Î£´¤Ä¤Î¥¿¥°¤Ë¤è¤Ã¤Æ¼±Ê̤µ¤ì¤ë¡£
89 TAG0 ¤Ë¤è¤Ã¤Æ¡¢¥Ç¡¼¥¿¥Ù¡¼¥¹Æâ¤Î¥Ç¡¼¥¿¤Î¥¿¥¤¥×¤Ï¼¡¤Î¤è¤¦¤Ë»ØÄꤵ¤ì¤ë¡£
92 TAG0 ¤¬ #Mchar_table ¤Ç¤¢¤ë¥Ç¡¼¥¿¤Ï @e chartable¥¿¥¤¥×
93 ¤È¸Æ¤Ð¤ì¡¢³Æʸ»ú¤Ë´Ø¤¹¤ë¾ðÊó¤òÄ󶡤¹¤ë¡£¤³¤Î¾ì¹ç
94 TAG1 ¤Ï¾ðÊó¤Î¼ïÎà¤ò»ØÄꤹ¤ë¥·¥ó¥Ü¥ë¤Ç¤¢¤ê¡¢#Msymbol, #Minteger, #Mstring,
95 #Mtext, #Mplist ¤Î¤¤¤º¤ì¤«¤Ç¤¢¤ë¡£TAG2 ¤È TAG3 ¤ÏǤ°Õ¤Î¥·¥ó¥Ü¥ë¤Ç¤è¤¤¡£
98 TAG0 ¤¬ #Mcharset ¤Ç¤¢¤ë¥Ç¡¼¥¿¤Ï @e charset¥¿¥¤¥×
99 ¤È¸Æ¤Ð¤ì¡¢Ê¸»ú¥»¥Ã¥ÈÍѤΥǥ³¡¼¥É¡¿¥¨¥ó¥³¡¼¥É¥Þ¥Ã¥×¤òÄ󶡤¹¤ë¡£¤³¤Î¾ì¹ç TAG1
100 ¤Ïʸ»ú¥»¥Ã¥È¤Î¥·¥ó¥Ü¥ë¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£TAG2 ¤È TAG3
101 ¤ÏǤ°Õ¤Î¥·¥ó¥Ü¥ë¤Ç¤è¤¤¡£
104 TAG0 ¤¬ #Mchar_table ¤Ç¤â #Mcharset ¤Ç¤â¤Ê¤¤¾ì¹ç¡¢¤½¤Î¥Ç¡¼¥¿¤Ï @e
105 plist¥¿¥¤¥× ¤Ç¤¢¤ë¡£¾ÜºÙ¤Ë´Ø¤·¤Æ¤Ï´Ø¿ô mdatabase_load ()
106 ¤ÎÀâÌÀ¤ò»²¾È¤Î¤³¤È¡£¤³¤Î¾ì¹ç TAG1¡¢TAG2¡¢TAG3 ¤ÏǤ°Õ¤Î¥·¥ó¥Ü¥ë¤Ç¤è¤¤¡£
108 ÆÃÄê¤Î¥¿¥°¤ò»ý¤Ä¥Ç¡¼¥¿¥Ù¡¼¥¹¤ò \<TAG0, TAG1, TAG2, TAG3\>
111 ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¥×¥í¥°¥é¥à¤Ï¡¢¤Þ¤º´Ø¿ô mdatabase_find ()
112 ¤ò»È¤Ã¤Æ¥Ç¡¼¥¿¥Ù¡¼¥¹¤Ë´Ø¤¹¤ë¾ðÊó¤òÊÝ»ý¤¹¤ë¥ª¥Ö¥¸¥§¥¯¥È¡Ê#MDatabase
113 ·¿¡Ë¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÆÀ¤ë¡£¤½¤ì¤ËÀ®¸ù¤·¤¿¤é¡¢ mdatabase_load ()
114 ¤Ë¤è¤Ã¤Æ¼ÂºÝ¤Ë¥Ç¡¼¥¿¥Ù¡¼¥¹¤ò¥í¡¼¥É¤¹¤ë¡£¹½Â¤ÂÎ #MDatabase
115 ¼«¿È¤¬¤É¤¦¼ÂÁõ¤µ¤ì¤Æ¤¤¤ë¤«¤Ï¡¢¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¥×¥í¥°¥é¥à¤«¤é¤Ï¸«¤¨¤Ê¤¤¡£
117 @latexonly \IPAlabel{database} @endlatexonly
122 #if !defined (FOR_DOXYGEN) || defined (DOXYGEN_INTERNAL_MODULE)
123 /*** @addtogroup m17nInternal
131 #include <sys/types.h>
132 #include <sys/stat.h>
140 #include "m17n-misc.h"
141 #include "internal.h"
143 #include "character.h"
145 #include "database.h"
149 /** The file containing a list of databases. */
150 #define MDB_DIR "mdb.dir"
151 /** Length of MDB_DIR. */
152 #define MDB_DIR_LEN 7
154 #define MAX_TIME(TIME1, TIME2) ((TIME1) >= (TIME2) ? (TIME1) : (TIME2))
156 #define GEN_PATH(path, dir, dir_len, file, file_len) \
157 (dir_len + file_len > PATH_MAX ? 0 \
158 : (memcpy (path, dir, dir_len), \
159 memcpy (path + dir_len, file, file_len), \
160 path[dir_len + file_len] = '\0', 1))
162 static MSymbol Masterisk;
163 static MSymbol Mversion;
165 /** Structure for a data in the m17n database. */
169 /** Tags to identify the data. <tag>[0] specifies the type of
170 database. If it is #Mchar_table, the type is @e chartable, if
171 it is #Mcharset, the type is @e charset, otherwise the type is
175 void *(*loader) (MSymbol *tags, void *extra_info);
177 /** The meaning of the value is dependent on <loader>. If <loader>
178 is load_database (), the value is a string of the file name that
179 contains the data. */
183 static MPlist *mdatabase__list;
186 read_number (char *buf, int *i)
195 while (c && isspace (c)) c = buf[idx++];
201 for (idx++, c = 0; (n = hex_mnemonic[(unsigned) buf[idx]]) < 16;
215 n = escape_mnemonic[c];
219 while (buf[idx] && buf[idx++] != '\'');
223 else if (hex_mnemonic[c] < 10)
228 while ((n = hex_mnemonic[(unsigned) buf[idx]]) < 10)
229 c = (c * 10) + n, idx++;
235 /** Load a data of type @c chartable from the file FD, and return the
236 newly created chartable. */
239 load_chartable (FILE *fp, MSymbol type)
247 MERROR (MERROR_DB, NULL);
249 table = mchartable (type, (type == Msymbol ? (void *) Mnil
250 : type == Minteger ? (void *) -1
257 for (len = 0; len < 1023 && (c = getc (fp)) != EOF && c != '\n'; len++)
260 if (hex_mnemonic[(unsigned) buf[0]] >= 10)
261 /* skip comment/invalid line */
264 from = read_number (buf, &i);
266 i++, to = read_number (buf, &i);
269 if (from < 0 || to < from)
272 while (buf[i] && isspace ((unsigned) buf[i])) i++;
279 /* VAL is a C-string. */
280 if (! (val = strdup (buf + i)))
281 MEMORY_FULL (MERROR_DB);
283 else if (type == Minteger)
285 /* VAL is an integer. */
291 n = read_number (buf, &i);
294 val = (void *) (n * positive);
296 else if (type == Mtext)
298 /* VAL is an M-text. */
301 mt = mconv_decode_buffer (Mcoding_utf_8,
302 (unsigned char *) (buf + i),
307 while ((c = read_number (buf, &i)) >= 0)
308 mt = mtext_cat_char (mt, c);
312 else if (type == Msymbol)
316 while (*p && ! isspace (*p))
318 if (*p == '\\' && p[1] != '\0')
320 memmove (p, p + 1, buf + len - (p + 1));
326 if (! strcmp (buf + i, "nil"))
329 val = (void *) msymbol (buf + i);
331 else if (type == Mplist)
333 val = (void *) mplist__from_string ((unsigned char *) buf + i,
340 mchartable_set (table, from, val);
342 mchartable_set_range (table, from, to, val);
347 M17N_OBJECT_UNREF (table);
348 MERROR (MERROR_DB, NULL);
352 /** Load a data of type @c charset from the file FD. */
355 load_charset (FILE *fp, MSymbol charset_name)
357 MCharset *charset = MCHARSET (charset_name);
366 MERROR (MERROR_DB, NULL);
367 size = (charset->code_range[15]
368 - (charset->min_code - charset->code_range_min_code));
369 MTABLE_MALLOC (decoder, size, MERROR_DB);
370 for (i = 0; i < size; i++)
372 encoder = mchartable (Minteger, (void *) MCHAR_INVALID_CODE);
374 while ((c = getc (fp)) != EOF)
376 unsigned code1, code2, c1, c2;
381 fgets (buf, 256, fp);
384 if (sscanf (buf, "0x%x-0x%x 0x%x", &code1, &code2, &c1) == 3)
386 idx1 = CODE_POINT_TO_INDEX (charset, code1);
389 idx2 = CODE_POINT_TO_INDEX (charset, code2);
392 c2 = c1 + (idx2 - idx1);
394 else if (sscanf (buf, "0x%x 0x%x", &code1, &c1) == 2)
396 idx1 = idx2 = CODE_POINT_TO_INDEX (charset, code1);
403 if (idx1 >= 0 && idx2 >= 0)
406 mchartable_set (encoder, c1, (void *) code1);
407 for (idx1++, c1++; idx1 <= idx2; idx1++, c1++)
409 code1 = INDEX_TO_CODE_POINT (charset, idx1);
411 mchartable_set (encoder, c1, (void *) code1);
421 M17N_OBJECT_UNREF (encoder);
425 mplist_add (plist, Mt, decoder);
426 mplist_add (plist, Mt, encoder);
431 gen_database_name (char *buf, MSymbol *tags)
435 strcpy (buf, msymbol_name (tags[0]));
436 for (i = 1; i < 4; i++)
439 strcat (buf, msymbol_name (tags[i]));
444 /* Return the absolute file name for DB_INFO->filename or NULL if no
445 absolute file name was found. If BUF is non-NULL, store the result
446 of `stat' call in it. In that case, set *RESULT to the return
450 get_database_file (MDatabaseInfo *db_info, struct stat *buf, int *result)
452 if (db_info->absolute_filename)
455 *result = stat (db_info->absolute_filename, buf);
459 struct stat stat_buf;
460 struct stat *statbuf = buf ? buf : &stat_buf;
463 char path[PATH_MAX + 1];
465 MPLIST_DO (plist, mdatabase__dir_list)
467 MDatabaseInfo *dir_info = MPLIST_VAL (plist);
469 if (dir_info->status != MDB_STATUS_DISABLED
470 && GEN_PATH (path, dir_info->filename, dir_info->len,
471 db_info->filename, db_info->len)
472 && (res = stat (path, statbuf)) == 0)
474 db_info->absolute_filename = strdup (path);
482 return db_info->absolute_filename;
486 load_database (MSymbol *tags, void *extra_info)
488 MDatabaseInfo *db_info = extra_info;
490 char *filename = get_database_file (db_info, NULL, NULL);
492 int mdebug_mask = MDEBUG_DATABASE;
495 MDEBUG_PRINT1 (" [DB] <%s>", gen_database_name (buf, tags));
496 if (! filename || ! (fp = fopen (filename, "r")))
499 MDEBUG_PRINT1 (" open fail: %s\n", filename);
501 MDEBUG_PRINT1 (" not found: %s\n", db_info->filename);
502 MERROR (MERROR_DB, NULL);
505 MDEBUG_PRINT1 (" from %s\n", filename);
507 if (tags[0] == Mchar_table)
508 value = load_chartable (fp, tags[1]);
509 else if (tags[0] == Mcharset)
510 value = load_charset (fp, tags[1]);
512 value = mplist__from_file (fp, NULL);
516 MERROR (MERROR_DB, NULL);
517 db_info->time = time (NULL);
522 /** Return a newly allocated MDatabaseInfo for DIRNAME. */
524 static MDatabaseInfo *
525 get_dir_info (char *dirname)
527 MDatabaseInfo *dir_info;
529 MSTRUCT_CALLOC (dir_info, MERROR_DB);
532 int len = strlen (dirname);
534 if (len + MDB_DIR_LEN < PATH_MAX)
536 MTABLE_MALLOC (dir_info->filename, len + 2, MERROR_DB);
537 memcpy (dir_info->filename, dirname, len + 1);
538 /* Append PATH_SEPARATOR if DIRNAME doesn't end with it. */
539 if (dir_info->filename[len - 1] != PATH_SEPARATOR)
541 dir_info->filename[len] = PATH_SEPARATOR;
542 dir_info->filename[++len] = '\0';
545 dir_info->status = MDB_STATUS_OUTDATED;
548 dir_info->status = MDB_STATUS_DISABLED;
551 dir_info->status = MDB_STATUS_DISABLED;
555 static void register_databases_in_files (MSymbol tags[4],
556 char *filename, int len);
559 find_database (MSymbol tags[4])
565 if (! mdatabase__list)
567 for (i = 0, plist = mdatabase__list; i < 4; i++)
569 MPlist *pl = mplist__assq (plist, tags[i]);
572 if ((p = mplist__assq (plist, Masterisk)))
574 MDatabaseInfo *db_info;
577 p = MPLIST_PLIST (p);
578 for (j = i + 1; j < 4; j++)
579 p = MPLIST_PLIST (MPLIST_NEXT (p));
580 mdb = MPLIST_VAL (MPLIST_NEXT (p));
581 db_info = mdb->extra_info;
582 if (db_info->status != MDB_STATUS_DISABLED)
584 register_databases_in_files (mdb->tag,
585 db_info->filename, db_info->len);
586 db_info->status = MDB_STATUS_DISABLED;
587 return find_database (tags);
592 plist = MPLIST_PLIST (pl);
593 plist = MPLIST_NEXT (plist);
595 mdb = MPLIST_VAL (plist);
600 free_db_info (MDatabaseInfo *db_info)
602 free (db_info->filename);
603 if (db_info->absolute_filename
604 && db_info->filename != db_info->absolute_filename)
605 free (db_info->absolute_filename);
606 M17N_OBJECT_UNREF (db_info->properties);
611 check_version (MText *version)
613 char *verstr = (char *) MTEXT_DATA (version);
614 char *endp = verstr + mtext_nbytes (version);
618 ver[0] = ver[1] = ver[2] = 0;
619 for (i = 0; verstr < endp; verstr++)
628 if (! isdigit (*verstr))
630 ver[i] = ver[i] * 10 + (*verstr - '0');
632 return (ver[0] < M17NLIB_MAJOR_VERSION
633 || (ver[0] == M17NLIB_MAJOR_VERSION
634 && (ver[1] < M17NLIB_MINOR_VERSION
635 || (ver[1] == M17NLIB_MINOR_VERSION
636 && ver[2] <= M17NLIB_PATCH_LEVEL))));
640 register_database (MSymbol tags[4],
641 void *(*loader) (MSymbol *, void *),
642 void *extra_info, enum MDatabaseStatus status,
646 MDatabaseInfo *db_info;
652 MPLIST_DO (plist, properties)
653 if (MPLIST_PLIST_P (plist))
655 MPlist *p = MPLIST_PLIST (plist);
657 if (MPLIST_SYMBOL_P (p)
658 && MPLIST_SYMBOL (p) == Mversion
659 && MPLIST_MTEXT_P (MPLIST_NEXT (p)))
661 if (check_version (MPLIST_MTEXT (MPLIST_NEXT (p))))
668 for (i = 0, plist = mdatabase__list; i < 4; i++)
670 MPlist *pl = mplist__assq (plist, tags[i]);
673 pl = MPLIST_PLIST (pl);
677 mplist_add (pl, Msymbol, tags[i]);
678 mplist_push (plist, Mplist, pl);
679 M17N_OBJECT_UNREF (pl);
681 plist = MPLIST_NEXT (pl);
684 if (MPLIST_TAIL_P (plist))
686 MSTRUCT_MALLOC (mdb, MERROR_DB);
687 for (i = 0; i < 4; i++)
688 mdb->tag[i] = tags[i];
689 mdb->loader = loader;
690 if (loader == load_database)
692 MSTRUCT_CALLOC (db_info, MERROR_DB);
693 mdb->extra_info = db_info;
698 mdb->extra_info = extra_info;
700 mplist_push (plist, Mt, mdb);
704 mdb = MPLIST_VAL (plist);
705 if (loader == load_database)
706 db_info = mdb->extra_info;
713 db_info->status = status;
714 if (! db_info->filename
715 || strcmp (db_info->filename, (char *) extra_info) != 0)
717 if (db_info->filename)
718 free (db_info->filename);
719 if (db_info->absolute_filename
720 && db_info->filename != db_info->absolute_filename)
721 free (db_info->absolute_filename);
722 db_info->filename = strdup ((char *) extra_info);
723 db_info->len = strlen ((char *) extra_info);
726 if (db_info->filename[0] == PATH_SEPARATOR)
727 db_info->absolute_filename = db_info->filename;
729 db_info->absolute_filename = NULL;
730 M17N_OBJECT_UNREF (db_info->properties);
733 db_info->properties = properties;
734 M17N_OBJECT_REF (properties);
738 if (mdb->tag[0] == Mchar_table
739 && mdb->tag[2] != Mnil
740 && (mdb->tag[1] == Mstring || mdb->tag[1] == Mtext
741 || mdb->tag[1] == Msymbol || mdb->tag[1] == Minteger
742 || mdb->tag[1] == Mplist))
743 mchar__define_prop (mdb->tag[2], mdb->tag[1], mdb);
748 register_databases_in_files (MSymbol tags[4], char *filename, int len)
751 MPlist *load_key = mplist ();
755 MPLIST_DO (plist, mdatabase__dir_list)
760 if (filename[0] == PATH_SEPARATOR)
762 if (glob (filename, GLOB_NOSORT, NULL, &globbuf))
768 MDatabaseInfo *d_info = MPLIST_VAL (plist);
769 char path[PATH_MAX + 1];
771 if (d_info->status == MDB_STATUS_DISABLED)
773 if (! GEN_PATH (path, d_info->filename, d_info->len, filename, len))
775 if (glob (path, GLOB_NOSORT, NULL, &globbuf))
777 headlen = d_info->len;
780 for (i = 0; i < globbuf.gl_pathc; i++)
782 if (! (fp = fopen (globbuf.gl_pathv[i], "r")))
784 pl = mplist__from_file (fp, load_key);
788 if (MPLIST_PLIST_P (pl))
793 for (j = 0, p = MPLIST_PLIST (pl); j < 4 && MPLIST_SYMBOL_P (p);
794 j++, p = MPLIST_NEXT (p))
795 tags2[j] = MPLIST_SYMBOL (p);
798 for (j = 0; j < 4; j++)
799 if (tags[j] != Masterisk && tags[j] != tags2[j])
802 register_database (tags2, load_database,
803 globbuf.gl_pathv[i] + headlen,
806 M17N_OBJECT_UNREF (pl);
809 if (filename[0] == PATH_SEPARATOR)
812 M17N_OBJECT_UNREF (load_key);
818 /** List of database directories. */
819 MPlist *mdatabase__dir_list;
824 MDatabaseInfo *dir_info;
827 Mchar_table = msymbol ("char-table");
828 Masterisk = msymbol ("*");
829 Mversion = msymbol ("version");
831 mdatabase__dir_list = mplist ();
832 /** The macro M17NDIR specifies a directory where the system-wide
833 MDB_DIR file exists. */
834 mplist_set (mdatabase__dir_list, Mt, get_dir_info (M17NDIR));
836 /* The variable mdatabase_dir specifies a directory where an
837 application program specific MDB_DIR file exists. */
838 if (mdatabase_dir && strlen (mdatabase_dir) > 0)
839 mplist_push (mdatabase__dir_list, Mt, get_dir_info (mdatabase_dir));
841 /* The environment variable M17NDIR specifies a directory where a
842 user specific MDB_DIR file exists. */
843 path = getenv ("M17NDIR");
844 if (path && strlen (path) > 0)
845 mplist_push (mdatabase__dir_list, Mt, get_dir_info (path));
848 /* If the env var M17NDIR is not set, check "~/.m17n.d". */
849 char *home = getenv ("HOME");
853 && (len = strlen (home))
854 && (path = alloca (len + 9)))
857 if (path[len - 1] != PATH_SEPARATOR)
858 path[len++] = PATH_SEPARATOR;
859 strcpy (path + len, ".m17n.d");
860 dir_info = get_dir_info (path);
861 mplist_push (mdatabase__dir_list, Mt, dir_info);
864 mplist_push (mdatabase__dir_list, Mt, get_dir_info (NULL));
867 mdatabase__finder = ((void *(*) (MSymbol, MSymbol, MSymbol, MSymbol))
869 mdatabase__loader = (void *(*) (void *)) mdatabase_load;
871 mdatabase__list = mplist ();
872 mdatabase__update ();
877 mdatabase__fini (void)
879 MPlist *plist, *p0, *p1, *p2, *p3;
881 MPLIST_DO (plist, mdatabase__dir_list)
882 free_db_info (MPLIST_VAL (plist));
883 M17N_OBJECT_UNREF (mdatabase__dir_list);
885 /* MDATABASE_LIST ::= ((TAG0 (TAG1 (TAG2 (TAG3 t:MDB) ...) ...) ...) ...) */
886 MPLIST_DO (plist, mdatabase__list)
888 p0 = MPLIST_PLIST (plist);
889 /* P0 ::= (TAG0 (TAG1 (TAG2 (TAG3 t:MDB) ...) ...) ...) */
890 MPLIST_DO (p0, MPLIST_NEXT (p0))
892 p1 = MPLIST_PLIST (p0);
893 /* P1 ::= (TAG1 (TAG2 (TAG3 t:MDB) ...) ...) */
894 MPLIST_DO (p1, MPLIST_NEXT (p1))
896 p2 = MPLIST_PLIST (p1);
897 /* P2 ::= (TAG2 (TAG3 t:MDB) ...) */
898 MPLIST_DO (p2, MPLIST_NEXT (p2))
902 p3 = MPLIST_PLIST (p2); /* P3 ::= (TAG3 t:MDB) */
903 p3 = MPLIST_NEXT (p3);
904 mdb = MPLIST_VAL (p3);
905 if (mdb->loader == load_database)
906 free_db_info (mdb->extra_info);
912 M17N_OBJECT_UNREF (mdatabase__list);
916 mdatabase__update (void)
918 MPlist *plist, *p0, *p1, *p2, *p3;
919 char path[PATH_MAX + 1];
920 MDatabaseInfo *dir_info;
924 /* Update elements of mdatabase__dir_list. */
925 MPLIST_DO (plist, mdatabase__dir_list)
927 dir_info = MPLIST_VAL (plist);
928 if (dir_info->filename)
930 if (stat (dir_info->filename, &statbuf) == 0
931 && (statbuf.st_mode & S_IFDIR))
933 if (dir_info->time < statbuf.st_mtime)
936 dir_info->time = statbuf.st_mtime;
938 if (GEN_PATH (path, dir_info->filename, dir_info->len,
939 MDB_DIR, MDB_DIR_LEN)
940 && stat (path, &statbuf) >= 0
941 && dir_info->time < statbuf.st_mtime)
944 dir_info->time = statbuf.st_mtime;
946 dir_info->status = MDB_STATUS_UPDATED;
950 if (dir_info->status != MDB_STATUS_DISABLED)
954 dir_info->status = MDB_STATUS_DISABLED;
963 /* At first, mark all databases defined automatically from mdb.dir
964 file(s) as "disabled". */
965 MPLIST_DO (plist, mdatabase__list)
967 p0 = MPLIST_PLIST (plist);
968 /* P0 ::= (TAG0 (TAG1 (TAG2 (TAG3 MDB) ...) ...) ...) */
969 MPLIST_DO (p0, MPLIST_NEXT (p0))
971 p1 = MPLIST_PLIST (p0);
972 MPLIST_DO (p1, MPLIST_NEXT (p1))
974 p2 = MPLIST_PLIST (p1);
975 MPLIST_DO (p2, MPLIST_NEXT (p2))
978 MDatabaseInfo *db_info;
980 p3 = MPLIST_PLIST (p2);
981 p3 = MPLIST_NEXT (p3);
982 mdb = MPLIST_VAL (p3);
983 db_info = mdb->extra_info;
984 if (db_info->status == MDB_STATUS_AUTO)
985 db_info->status = MDB_STATUS_DISABLED;
992 MPLIST_DO (p0, mdatabase__dir_list)
993 mplist_push (plist, MPLIST_KEY (p0), MPLIST_VAL (p0));
995 while (! MPLIST_TAIL_P (plist))
997 MDatabaseInfo *dir_info = mplist_pop (plist);
1002 if (dir_info->status == MDB_STATUS_DISABLED)
1004 if (! GEN_PATH (path, dir_info->filename, dir_info->len,
1005 MDB_DIR, MDB_DIR_LEN))
1007 if (! (fp = fopen (path, "r")))
1009 pl = mplist__from_file (fp, NULL);
1019 int with_wildcard = 0;
1021 if (! MPLIST_PLIST_P (p))
1023 for (i = 0, p1 = MPLIST_PLIST (p); i < 4 && MPLIST_SYMBOL_P (p1);
1024 i++, p1 = MPLIST_NEXT (p1))
1025 with_wildcard |= ((tags[i] = MPLIST_SYMBOL (p1)) == Masterisk);
1027 || tags[0] == Masterisk
1028 || ! MPLIST_MTEXT_P (p1))
1031 tags[i] = with_wildcard ? Masterisk : Mnil;
1032 mt = MPLIST_MTEXT (p1);
1033 nbytes = mtext_nbytes (mt);
1034 if (nbytes > PATH_MAX)
1036 memcpy (path, MTEXT_DATA (mt), nbytes);
1037 path[nbytes] = '\0';
1039 register_database (tags, load_database, path,
1040 MDB_STATUS_AUTO_WILDCARD, NULL);
1042 register_database (tags, load_database, path,
1043 MDB_STATUS_AUTO, p1);
1045 M17N_OBJECT_UNREF (pl);
1047 M17N_OBJECT_UNREF (plist);
1051 mdatabase__load_for_keys (MDatabase *mdb, MPlist *keys)
1053 int mdebug_mask = MDEBUG_DATABASE;
1054 MDatabaseInfo *db_info;
1060 if (mdb->loader != load_database
1061 || mdb->tag[0] == Mchar_table
1062 || mdb->tag[0] == Mcharset)
1063 MERROR (MERROR_DB, NULL);
1064 MDEBUG_PRINT1 (" [DB] <%s>.\n",
1065 gen_database_name (name, mdb->tag));
1066 db_info = mdb->extra_info;
1067 filename = get_database_file (db_info, NULL, NULL);
1068 if (! filename || ! (fp = fopen (filename, "r")))
1069 MERROR (MERROR_DB, NULL);
1070 plist = mplist__from_file (fp, keys);
1076 /* Check if the database MDB should be reloaded or not. It returns:
1078 1: The database has not been updated since it was loaded last
1081 0: The database has never been loaded or has been updated
1082 since it was loaded last time.
1084 -1: The database is not loadable at the moment. */
1087 mdatabase__check (MDatabase *mdb)
1089 MDatabaseInfo *db_info = (MDatabaseInfo *) mdb->extra_info;
1093 if (db_info->absolute_filename != db_info->filename
1094 || db_info->status == MDB_STATUS_AUTO)
1095 mdatabase__update ();
1097 if (! get_database_file (db_info, &buf, &result)
1100 if (db_info->time < buf.st_mtime)
1105 /* Search directories in mdatabase__dir_list for file FILENAME. If
1106 the file exist, return the absolute pathname. If FILENAME is
1107 already absolute, return a copy of it. */
1110 mdatabase__find_file (char *filename)
1114 MDatabaseInfo db_info;
1116 if (filename[0] == PATH_SEPARATOR)
1117 return (stat (filename, &buf) == 0 ? filename : NULL);
1118 db_info.filename = filename;
1119 db_info.len = strlen (filename);
1121 db_info.absolute_filename = NULL;
1122 if (! get_database_file (&db_info, &buf, &result)
1125 return db_info.absolute_filename;
1129 mdatabase__file (MDatabase *mdb)
1131 MDatabaseInfo *db_info;
1133 if (mdb->loader != load_database)
1135 db_info = mdb->extra_info;
1136 return get_database_file (db_info, NULL, NULL);
1140 mdatabase__lock (MDatabase *mdb)
1142 MDatabaseInfo *db_info;
1148 if (mdb->loader != load_database)
1150 db_info = mdb->extra_info;
1151 if (db_info->lock_file)
1153 file = get_database_file (db_info, NULL, NULL);
1156 len = strlen (file);
1157 db_info->uniq_file = malloc (len + 35);
1158 if (! db_info->uniq_file)
1160 db_info->lock_file = malloc (len + 5);
1161 if (! db_info->lock_file)
1163 free (db_info->uniq_file);
1166 sprintf (db_info->uniq_file, "%s.%X.%X", db_info->absolute_filename,
1167 (unsigned) time (NULL), (unsigned) getpid ());
1168 sprintf (db_info->lock_file, "%s.LCK", db_info->absolute_filename);
1170 fp = fopen (db_info->uniq_file, "w");
1173 char *str = strdup (db_info->uniq_file);
1174 char *dir = dirname (str);
1176 if (stat (dir, &buf) == 0
1177 || mkdir (dir, 0777) < 0
1178 || ! (fp = fopen (db_info->uniq_file, "w")))
1180 free (db_info->uniq_file);
1181 free (db_info->lock_file);
1182 db_info->lock_file = NULL;
1189 if (link (db_info->uniq_file, db_info->lock_file) < 0
1190 && (stat (db_info->uniq_file, &buf) < 0
1191 || buf.st_nlink != 2))
1193 unlink (db_info->uniq_file);
1194 unlink (db_info->lock_file);
1195 free (db_info->uniq_file);
1196 free (db_info->lock_file);
1197 db_info->lock_file = NULL;
1204 mdatabase__save (MDatabase *mdb, MPlist *data)
1206 MDatabaseInfo *db_info;
1212 if (mdb->loader != load_database)
1214 db_info = mdb->extra_info;
1215 if (! db_info->lock_file)
1217 file = get_database_file (db_info, NULL, NULL);
1221 if (mplist__serialize (mt, data, 1) < 0)
1223 M17N_OBJECT_UNREF (mt);
1226 fp = fopen (db_info->uniq_file, "w");
1229 M17N_OBJECT_UNREF (mt);
1232 mconv_encode_stream (msymbol ("utf-8"), mt, fp);
1233 M17N_OBJECT_UNREF (mt);
1235 if ((ret = rename (db_info->uniq_file, file)) < 0)
1236 unlink (db_info->uniq_file);
1237 free (db_info->uniq_file);
1238 db_info->uniq_file = NULL;
1243 mdatabase__unlock (MDatabase *mdb)
1245 MDatabaseInfo *db_info;
1247 if (mdb->loader != load_database)
1249 db_info = mdb->extra_info;
1250 if (! db_info->lock_file)
1252 unlink (db_info->lock_file);
1253 free (db_info->lock_file);
1254 db_info->lock_file = NULL;
1255 if (db_info->uniq_file)
1257 unlink (db_info->uniq_file);
1258 free (db_info->uniq_file);
1264 #endif /* !FOR_DOXYGEN || DOXYGEN_INTERNAL_MODULE */
1269 /*** @addtogroup m17nDatabase */
1274 @brief Directory for application specific data.
1276 If an application program wants to provide a data specific to the
1277 program or a data overriding what supplied by the m17n database,
1278 it must set this variable to a name of directory that contains the
1279 data files before it calls the macro M17N_INIT (). The directory
1280 may contain a file "mdb.dir" which contains a list of data
1281 definitions in the format described in @ref mdbDir "mdbDir(5)".
1283 The default value is NULL. */
1285 @brief ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¸ÇͤΥǡ¼¥¿Íѥǥ£¥ì¥¯¥È¥ê.
1287 ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¥×¥í¥°¥é¥à¤¬¡¢¤½¤Î¥×¥í¥°¥é¥à¸ÇͤΥǡ¼¥¿¤ä m17n
1288 ¥Ç¡¼¥¿¥Ù¡¼¥¹¤ò¾å½ñ¤¤¹¤ë¥Ç¡¼¥¿¤òÄ󶡤¹¤ë¾ì¹ç¤Ë¤Ï¡¢¥Þ¥¯¥í M17N_INIT ()
1289 ¤ò¸Æ¤ÖÁ°¤Ë¤³¤ÎÊÑ¿ô¤ò¥Ç¡¼¥¿¥Õ¥¡¥¤¥ë¤ò´Þ¤à¥Ç¥£¥ì¥¯¥È¥ê̾¤Ë¥»¥Ã¥È¤·¤Ê¤¯¤Æ¤Ï¤Ê¤é¤Ê¤¤¡£¥Ç¥£¥ì¥¯¥È¥ê¤Ë¤Ï
1290 "mdb.dir" ¥Õ¥¡¥¤¥ë¤ò¤ª¤¯¤³¤È¤¬¤Ç¤¤ë¡£¤½¤Î"mdb.dir"¥Õ¥¡¥¤¥ë¤Ë¤Ï¡¢
1291 @ref mdbDir "mdbDir(5)" ¤ÇÀâÌÀ¤µ¤ì¤Æ¤¤¤ë¥Õ¥©¡¼¥Þ¥Ã¥È¤Ç¥Ç¡¼¥¿ÄêµÁ¤Î¥ê¥¹¥È¤òµ½Ò¤¹¤ë¡£
1293 ¥Ç¥Õ¥©¥ë¥È¤ÎÃÍ¤Ï NULL ¤Ç¤¢¤ë¡£ */
1295 char *mdatabase_dir;
1299 @brief Look for a data in the database.
1301 The mdatabase_find () function searches the m17n database for a
1302 data who has tags $TAG0 through $TAG3, and returns a pointer to
1303 the data. If such a data is not found, it returns @c NULL. */
1306 @brief ¥Ç¡¼¥¿¥Ù¡¼¥¹Ãæ¤Î¥Ç¡¼¥¿¤òõ¤¹.
1308 ´Ø¿ô mdatabase_find () ¤Ï¡¢ m17n ¸À¸ì¾ðÊó¥Ù¡¼¥¹Ãæ¤Ç $TAG0 ¤«¤é
1309 $TAG3 ¤Þ¤Ç¤Î¥¿¥°¤ò»ý¤Ä¥Ç¡¼¥¿¤òõ¤·¡¢¤½¤ì¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£¤½¤Î¤è¤¦¤Ê¥Ç¡¼¥¿¤¬¤Ê¤±¤ì¤Ð
1312 @latexonly \IPAlabel{mdatabase_find} @endlatexonly */
1315 mdatabase_find (MSymbol tag0, MSymbol tag1, MSymbol tag2, MSymbol tag3)
1319 mdatabase__update ();
1320 tags[0] = tag0, tags[1] = tag1, tags[2] = tag2, tags[3] = tag3;
1321 return find_database (tags);
1326 @brief Return a data list of the m17n database.
1328 The mdatabase_list () function searches the m17n database for data
1329 who have tags $TAG0 through $TAG3, and returns their list by a
1330 plist. The value #Mnil in $TAGn means a wild card that matches
1331 any tag. Each element of the plist has key #Mt and value a
1332 pointer to type #MDatabase. */
1334 @brief m17n ¥Ç¡¼¥¿¥Ù¡¼¥¹¤Î¥Ç¡¼¥¿¥ê¥¹¥È¤òÊÖ¤¹.
1336 ´Ø¿ô mdatabase_list () ¤Ï m17n ¥Ç¡¼¥¿¥Ù¡¼¥¹Ã椫¤é $TAG0 ¤«¤é$TAG3
1337 ¤Þ¤Ç¤Î¥¿¥°¤ò»ý¤Ä¥Ç¡¼¥¿¤òõ¤·¡¢¤½¤Î¥ê¥¹¥È¤òplist ¤È¤·¤ÆÊÖ¤¹¡£ $TAGn ¤¬ #Mnil
1338 ¤Ç¤¢¤Ã¤¿¾ì¹ç¤Ë¤Ï¡¢Ç¤°Õ¤Î¥¿¥°¤Ë¥Þ¥Ã¥Á¤¹¤ë¥ï¥¤¥ë¥É¥«¡¼¥É¤È¤·¤Æ¼è¤ê°·¤ï¤ì¤ë¡£ÊÖ¤µ¤ì¤ë
1339 plist ¤Î³ÆÍ×ÁǤϥ¡¼ ¤È¤·¤Æ #Mt ¤ò¡¢ÃͤȤ·¤Æ #MDatabase ·¿¤Ø¤Î¥Ý¥¤¥ó¥¿¤ò»ý¤Ä¡£ */
1342 mdatabase_list (MSymbol tag0, MSymbol tag1, MSymbol tag2, MSymbol tag3)
1344 MPlist *plist = mplist (), *pl = plist;
1345 MPlist *p, *p0, *p1, *p2, *p3;
1347 MDatabaseInfo *db_info;
1349 mdatabase__update ();
1351 MPLIST_DO (p, mdatabase__list)
1353 p0 = MPLIST_PLIST (p);
1354 /* P0 ::= (TAG0 (TAG1 (TAG2 (TAG3 MDB) ...) ...) ...) */
1355 if (MPLIST_SYMBOL (p0) == Masterisk
1356 || (tag0 != Mnil && MPLIST_SYMBOL (p0) != tag0))
1358 MPLIST_DO (p0, MPLIST_NEXT (p0))
1360 p1 = MPLIST_PLIST (p0);
1361 if (MPLIST_SYMBOL (p1) == Masterisk)
1363 p1 = MPLIST_PLIST (MPLIST_NEXT (p1));
1364 p1 = MPLIST_PLIST (MPLIST_NEXT (p1));
1365 mdb = MPLIST_VAL (MPLIST_NEXT (p1));
1366 if (mdb->loader == load_database
1367 && (db_info = mdb->extra_info)
1368 && db_info->status != MDB_STATUS_DISABLED)
1370 register_databases_in_files (mdb->tag,
1371 db_info->filename, db_info->len);
1372 db_info->status = MDB_STATUS_DISABLED;
1373 M17N_OBJECT_UNREF (plist);
1374 return mdatabase_list (tag0, tag1, tag2, tag3);
1378 if (tag1 != Mnil && MPLIST_SYMBOL (p1) != tag1)
1380 MPLIST_DO (p1, MPLIST_NEXT (p1))
1382 p2 = MPLIST_PLIST (p1);
1383 if (MPLIST_SYMBOL (p2) == Masterisk
1384 || (tag2 != Mnil && MPLIST_SYMBOL (p2) != tag2))
1386 MPLIST_DO (p2, MPLIST_NEXT (p2))
1388 p3 = MPLIST_PLIST (p2);
1389 if (MPLIST_SYMBOL (p3) == Masterisk
1390 || (tag3 != Mnil && MPLIST_SYMBOL (p3) != tag3))
1392 p3 = MPLIST_NEXT (p3);
1393 pl = mplist_add (pl, Mt, MPLIST_VAL (p3));
1398 if (MPLIST_TAIL_P (plist))
1399 M17N_OBJECT_UNREF (plist);
1405 @brief Define a data of the m17n database.
1407 The mdatabase_define () function defines a data that has tags
1408 $TAG0 through $TAG3 and additional information $EXTRA_INFO.
1410 $LOADER is a pointer to a function that loads the data from the
1411 database. This function is called from the mdatabase_load ()
1412 function with the two arguments $TAGS and $EXTRA_INFO. Here,
1413 $TAGS is the array of $TAG0 through $TAG3.
1415 If $LOADER is @c NULL, the default loader of the m17n library is
1416 used. In this case, $EXTRA_INFO must be a string specifying a
1417 filename that contains the data.
1420 If the operation was successful, mdatabase_define () returns a
1421 pointer to the defined data, which can be used as an argument to
1422 mdatabase_load (). Otherwise, it returns @c NULL. */
1425 @brief m17n ¥Ç¡¼¥¿¥Ù¡¼¥¹¤Î¥Ç¡¼¥¿¤òÄêµÁ¤¹¤ë.
1427 ´Ø¿ô mdatabase_define () ¤Ï $TAG0 ¤«¤é $TAG3 ¤Þ¤Ç¤Î¥¿¥°¤ª¤è¤ÓÉղþðÊó
1428 $EXTRA_INFO ¤ò»ý¤Ä¥Ç¡¼¥¿¤òÄêµÁ¤¹¤ë¡£
1430 $LOADER ¤Ï¤½¤Î¥Ç¡¼¥¿¤Î¥í¡¼¥É¤ËÍѤ¤¤é¤ì¤ë´Ø¿ô¤Ø¤Î¥Ý¥¤¥ó¥¿¤Ç¤¢¤ë¡£¤³¤Î´Ø¿ô¤Ï
1431 mdatabase_load () ¤«¤é $TAGS ¤È $EXTRA_INFO ¤È¤¤¤¦Æó¤Ä¤Î°ú¿ôÉÕ¤¤Ç¸Æ¤Ó½Ð¤µ¤ì¤ë¡£¤³¤³¤Ç
1432 $TAGS ¤Ï $TAG0 ¤«¤é $TAG3 ¤Þ¤Ç¤ÎÇÛÎó¤Ç¤¢¤ë¡£
1434 ¤â¤· $LOADER ¤¬ @c NULL ¤Ê¤é¡¢m17n ¥é¥¤¥Ö¥é¥êɸ½à¤Î¥í¡¼¥À¤¬»È¤ï¤ì¤ë¡£¤³¤Î¾ì¹ç¤Ë¤Ï
1435 $EXTRA_INFO ¤Ï¥Ç¡¼¥¿¤ò´Þ¤à¥Õ¥¡¥¤¥ë̾¤Ç¤Ê¤¯¤Æ¤Ï¤Ê¤é¤Ê¤¤¡£
1438 ½èÍý¤ËÀ®¸ù¤¹¤ì¤Ð mdatabase_define ()
1439 ¤ÏÄêµÁ¤µ¤ì¤¿¥Ç¡¼¥¿¥Ù¡¼¥¹¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£¤³¤Î¥Ý¥¤¥ó¥¿¤Ï´Ø¿ô mdatabase_load ()
1440 ¤Î°ú¿ô¤È¤·¤ÆÍѤ¤¤ë¤³¤È¤¬¤Ç¤¤ë¡£¤½¤¦¤Ç¤Ê¤±¤ì¤Ð @c NULL ¤òÊÖ¤¹¡£
1442 @latexonly \IPAlabel{mdatabase_define} @endlatexonly */
1446 mdatabase_load (), mdatabase_define () */
1449 mdatabase_define (MSymbol tag0, MSymbol tag1, MSymbol tag2, MSymbol tag3,
1450 void *(*loader) (MSymbol *, void *),
1456 tags[0] = tag0, tags[1] = tag1, tags[2] = tag2, tags[3] = tag3;
1458 loader = load_database;
1459 mdb = register_database (tags, loader, extra_info, MDB_STATUS_EXPLICIT, NULL);
1465 @brief Load a data from the database.
1467 The mdatabase_load () function loads a data specified in $MDB and
1468 returns the contents. The type of contents depends on the type of
1471 If the data is of the @e plist @e type, this function returns a
1472 pointer to @e plist.
1474 If the database is of the @e chartable @e type, it returns a
1475 chartable. The default value of the chartable is set according to
1476 the second tag of the data as below:
1478 @li If the tag is #Msymbol, the default value is #Mnil.
1479 @li If the tag is #Minteger, the default value is -1.
1480 @li Otherwise, the default value is @c NULL.
1482 If the data is of the @e charset @e type, it returns a plist of length 2
1483 (keys are both #Mt). The value of the first element is an array
1484 of integers that maps code points to the corresponding character
1485 codes. The value of the second element is a chartable of integers
1486 that does the reverse mapping. The charset must be defined in
1491 @brief ¥Ç¡¼¥¿¥Ù¡¼¥¹¤«¤é¥Ç¡¼¥¿¤ò¥í¡¼¥É¤¹¤ë.
1493 ´Ø¿ô mdatabase_load () ¤Ï $MDB
1494 ¤¬»Ø¤¹¥Ç¡¼¥¿¤ò¥í¡¼¥É¤·¡¢¤½¤ÎÃæ¿È¤òÊÖ¤¹¡£ÊÖ¤µ¤ì¤ë¤â¤Î¤Ï¥Ç¡¼¥¿¤Î¥¿¥¤¥×¤Ë¤è¤Ã¤Æ°Û¤Ê¤ë¡£
1496 ¥Ç¡¼¥¿¤¬ @e plist¥¿¥¤¥× ¤Ê¤é¤Ð¡¢ @e plist ¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£
1498 ¥Ç¡¼¥¿¤¬ @e chartable¥¿¥¤¥× ¤Ê¤é¤Ðʸ»ú¥Æ¡¼¥Ö¥ë¤òÊÖ¤¹¡£
1499 ʸ»ú¥Æ¡¼¥Ö¥ë¤Î¥Ç¥Õ¥©¥ë¥ÈÃͤϡ¢¥Ç¡¼¥¿¤ÎÂè2¥¿¥°¤Ë¤è¤Ã¤Æ°Ê²¼¤Î¤è¤¦¤Ë·è¤Þ¤ë¡£
1501 @li ¥¿¥°¤¬ #Msymbol ¤Ê¤é¡¢¥Ç¥Õ¥©¥ë¥ÈÃÍ¤Ï #Mnil
1502 @li ¥¿¥°¤¬ #Minteger ¤Ê¤é¡¢¥Ç¥Õ¥©¥ë¥ÈÃÍ¤Ï -1
1503 @li ¤½¤ì°Ê³°¤Ê¤é¡¢¥Ç¥Õ¥©¥ë¥ÈÃÍ¤Ï @c NULL
1505 ¥Ç¡¼¥¿¤¬ @e charset¥¿¥¤¥× ¤Ê¤é¤ÐŤµ 2 ¤Î plist ¤òÊÖ¤¹¡Ê¥¡¼¤Ï¶¦¤Ë#Mt ¡Ë¡£
1506 ºÇ½é¤ÎÍ×ÁǤÎÃͤϥ³¡¼¥É¥Ý¥¤¥ó¥È¤òÂбþ¤¹¤ëʸ»ú¥³¡¼¥É¤Ë¥Þ¥Ã¥×¤¹¤ëÀ°¿ô¤ÎÇÛÎó¤Ç¤¢¤ë¡£
1507 £²ÈÖÌܤÎÍ×ÁǤÎÃͤϵդΥޥåפò¤¹¤ëʸ»ú¥Æ¡¼¥Ö¥ë¤Ç¤¢¤ë¡£
1508 ¤³¤Îʸ»ú¥»¥Ã¥È¤Ïͽ¤áÄêµÁ¤µ¤ì¤Æ¤¤¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
1510 @latexonly \IPAlabel{mdatabase_load} @endlatexonly
1515 mdatabase_load (), mdatabase_define () */
1518 mdatabase_load (MDatabase *mdb)
1520 return (*mdb->loader) (mdb->tag, mdb->extra_info);
1525 @brief Get tags of a data.
1527 The mdatabase_tag () function returns an array of tags (symbols)
1528 that identify the data in $MDB. The length of the array is
1532 @brief ¥Ç¡¼¥¿¤Î¥¿¥°¤òÆÀ¤ë.
1534 ´Ø¿ô mdatabase_tag () ¤Ï¡¢¥Ç¡¼¥¿ $MDB ¤Î¥¿¥°¡Ê¥·¥ó¥Ü¥ë¡Ë¤ÎÇÛÎó¤òÊÖ¤¹¡£ÇÛÎó¤ÎŤµ¤Ï
1537 @latexonly \IPAlabel{mdatabase_tag} @endlatexonly */
1540 mdatabase_tag (MDatabase *mdb)