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., 59 Temple Place, Suite 330, Boston, MA
24 @addtogroup m17nDatabase
25 @brief The m17n database and API for it.
27 The m17n library dynamically acquires various kinds of information
28 in need from data in the <i> m17n database</i>. Application
29 programs can also add/load their original data to/from the m17n
30 database. The m17n database contains multiple heterogeneous data,
31 and each data is identified by four tags; TAG0, TAG1, TAG2, TAG3.
32 Each tag must be a symbol.
34 TAG0 specifies the type of data stored in the database as below.
37 If TAG0 is #Mchar_table, the data is of the @e chartable @e
38 type and provides information about each character. In this case,
39 TAG1 specifies the type of the information and must be #Msymbol,
40 #Minteger, #Mstring, #Mtext, or #Mplist. TAG2 and TAG3 can be any
44 If TAG0 is #Mcharset, the data is of the @e charset @e type
45 and provides a decode/encode mapping table for a charset. In this
46 case, TAG1 must be a symbol representing a charset. TAG2 and TAG3
50 If TAG0 is neither #Mchar_table nor #Mcharset, the data is of
51 the @e plist @e type. See the documentation of the
52 mdatabase_load () function for the details.
53 In this case, TAG1, TAG2, and TAG3 can be any symbols.
55 The notation \<TAG0, TAG1, TAG2, TAG3\> means a data with those
58 Application programs first calls the mdatabase_find () function to
59 get a pointer to an object of the type #MDatabase. That object
60 holds information about the specified data. When it is
61 successfully returned, the mdatabase_load () function loads the
62 data. The implementation of the structure #MDatabase is
63 concealed from application programs.
67 @addtogroup m17nDatabase
68 @brief m17n ¥Ç¡¼¥¿¥Ù¡¼¥¹¤Ë¤È¤½¤ì¤Ë´Ø¤¹¤ë API.
70 m17n ¥é¥¤¥Ö¥é¥ê¤ÏɬÍפ˱þ¤¸¤ÆưŪ¤Ë @e m17n @e ¥Ç¡¼¥¿¥Ù¡¼¥¹
71 ¤«¤é¾ðÊó¤ò¼èÆÀ¤¹¤ë¡£¤Þ¤¿¡¢¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¥×¥í¥°¥é¥à¤âÆȼ«¤Î¥Ç¡¼¥¿¤ò
72 m17n ¥Ç¡¼¥¿¥Ù¡¼¥¹¤ËÄɲä·¡¢¤½¤ì¤òưŪ¤Ë¼èÆÀ¤¹¤ë¤³¤È¤¬¤Ç¤¤ë¡£m17n
73 ¥Ç¡¼¥¿¥Ù¡¼¥¹¤Ë¤ÏÊ£¿ô¤Î¿Íͤʥǡ¼¥¿¤¬´Þ¤Þ¤ì¤Æ¤ª¤ê¡¢³Æ¥Ç¡¼¥¿¤Ï
74 TAG0, TAG1, TAG2, TAG3¡Ê¤¹¤Ù¤Æ¥·¥ó¥Ü¥ë¡Ë¤Î£´¤Ä¤Î¥¿¥°¤Ë¤è¤Ã¤Æ¼±Ê̤µ¤ì¤ë¡£
76 TAG0 ¤Ë¤è¤Ã¤Æ¡¢¥Ç¡¼¥¿¥Ù¡¼¥¹Æâ¤Î¥Ç¡¼¥¿¤Î¥¿¥¤¥×¤Ï¼¡¤Î¤è¤¦¤Ë»ØÄꤵ¤ì¤ë¡£
79 TAG0 ¤¬ #Mchar_table ¤Ç¤¢¤ë¥Ç¡¼¥¿¤Ï @e chartable¥¿¥¤¥×
80 ¤È¸Æ¤Ð¤ì¡¢³Æʸ»ú¤Ë´Ø¤¹¤ë¾ðÊó¤òÄ󶡤¹¤ë¡£¤³¤Î¾ì¹ç
81 TAG1 ¤Ï¾ðÊó¤Î¼ïÎà¤ò»ØÄꤹ¤ë¥·¥ó¥Ü¥ë¤Ç¤¢¤ê¡¢#Msymbol, #Minteger, #Mstring,
82 #Mtext, #Mplist ¤Î¤¤¤º¤ì¤«¤Ç¤¢¤ë¡£TAG2 ¤È TAG3 ¤ÏǤ°Õ¤Î¥·¥ó¥Ü¥ë¤Ç¤è¤¤¡£
85 TAG0 ¤¬ #Mcharset ¤Ç¤¢¤ë¥Ç¡¼¥¿¤Ï @e charset¥¿¥¤¥×
86 ¤È¸Æ¤Ð¤ì¡¢Ê¸»ú¥»¥Ã¥ÈÍѤΥǥ³¡¼¥É¡¿¥¨¥ó¥³¡¼¥É¥Þ¥Ã¥×¤òÄ󶡤¹¤ë¡£¤³¤Î¾ì¹ç TAG1
87 ¤Ïʸ»ú¥»¥Ã¥È¤Î¥·¥ó¥Ü¥ë¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£TAG2 ¤È TAG3
88 ¤ÏǤ°Õ¤Î¥·¥ó¥Ü¥ë¤Ç¤è¤¤¡£
91 TAG0 ¤¬ #Mchar_table ¤Ç¤â #Mcharset ¤Ç¤â¤Ê¤¤¾ì¹ç¡¢¤½¤Î¥Ç¡¼¥¿¤Ï @e
92 plist¥¿¥¤¥× ¤Ç¤¢¤ë¡£¾ÜºÙ¤Ë´Ø¤·¤Æ¤Ï´Ø¿ô mdatabase_load ()
93 ¤ÎÀâÌÀ¤ò»²¾È¤Î¤³¤È¡£¤³¤Î¾ì¹ç TAG1¡¢TAG2¡¢TAG3 ¤ÏǤ°Õ¤Î¥·¥ó¥Ü¥ë¤Ç¤è¤¤¡£
95 ÆÃÄê¤Î¥¿¥°¤ò»ý¤Ä¥Ç¡¼¥¿¥Ù¡¼¥¹¤ò \<TAG0, TAG1, TAG2, TAG3\>
98 ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¥×¥í¥°¥é¥à¤Ï¡¢¤Þ¤º´Ø¿ô mdatabase_find ()
99 ¤ò»È¤Ã¤Æ¥Ç¡¼¥¿¥Ù¡¼¥¹¤Ë´Ø¤¹¤ë¾ðÊó¤òÊÝ»ý¤¹¤ë¥ª¥Ö¥¸¥§¥¯¥È¡Ê#MDatabase
100 ·¿¡Ë¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÆÀ¤ë¡£¤½¤ì¤ËÀ®¸ù¤·¤¿¤é¡¢ mdatabase_load ()
101 ¤Ë¤è¤Ã¤Æ¼ÂºÝ¤Ë¥Ç¡¼¥¿¥Ù¡¼¥¹¤ò¥í¡¼¥É¤¹¤ë¡£¹½Â¤ÂÎ #MDatabase
102 ¼«¿È¤¬¤É¤¦¼ÂÁõ¤µ¤ì¤Æ¤¤¤ë¤«¤Ï¡¢¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¥×¥í¥°¥é¥à¤«¤é¤Ï¸«¤¨¤Ê¤¤¡£
104 @latexonly \IPAlabel{database} @endlatexonly
109 #if !defined (FOR_DOXYGEN) || defined (DOXYGEN_INTERNAL_MODULE)
110 /*** @addtogroup m17nInternal
118 #include <sys/types.h>
119 #include <sys/stat.h>
124 #include "m17n-misc.h"
125 #include "internal.h"
127 #include "character.h"
129 #include "database.h"
133 /** The file containing a list of databases. */
134 #define MDB_DIR "mdb.dir"
135 #define MDB_DIR_LEN 8
137 /** Structure for a data in the m17n database. */
141 /** Tags to identify the data. <tag>[0] specifies the type of
142 database. If it is #Mchar_table, the type is @e chartable, if
143 it is #Mcharset, the type is @e charset, otherwise the type is
147 void *(*loader) (MSymbol *tags, void *extra_info);
149 /** The meaning of the value is dependent on <loader>. If <loader>
150 is load_database (), the value is a string of the file name that
151 contains the data. */
155 /** List of all data. */
162 static struct MDatabaseList mdb_list;
166 read_number (char *buf, int *i)
175 while (c && isspace (c)) c = buf[idx++];
181 for (idx++, c = 0; (n = hex_mnemonic[(unsigned) buf[idx]]) < 16;
195 n = escape_mnemonic[c];
199 while (buf[idx] && buf[idx++] != '\'');
203 else if (hex_mnemonic[c] < 10)
208 while ((n = hex_mnemonic[(unsigned) buf[idx]]) < 10)
209 c = (c * 10) + n, idx++;
215 /** Load a data of type @c chartable from the file FD, and return the
216 newly created chartable. */
219 load_chartable (FILE *fp, MSymbol type)
227 MERROR (MERROR_DB, NULL);
229 table = mchartable (type, (type == Msymbol ? (void *) Mnil
230 : type == Minteger ? (void *) -1
237 for (len = 0; len < 1023 && (c = getc (fp)) != EOF && c != '\n'; len++)
240 if (hex_mnemonic[(unsigned) buf[0]] >= 10)
241 /* skip comment/invalid line */
244 from = read_number (buf, &i);
246 i++, to = read_number (buf, &i);
249 if (from < 0 || to < from)
252 while (buf[i] && isspace ((unsigned) buf[i])) i++;
259 /* VAL is a C-string. */
260 if (! (val = strdup (buf + i)))
261 MEMORY_FULL (MERROR_DB);
263 else if (type == Minteger)
265 /* VAL is an integer. */
271 n = read_number (buf, &i);
274 val = (void *) (n * positive);
276 else if (type == Mtext)
278 /* VAL is an M-text. */
281 mt = mconv_decode_buffer (Mcoding_utf_8,
282 (unsigned char *) (buf + i),
287 while ((c = read_number (buf, &i)) >= 0)
288 mt = mtext_cat_char (mt, c);
292 else if (type == Msymbol)
296 while (! isspace (*p))
298 if (*p == '\\' || p[1] != '\0')
300 memmove (p, p + 1, buf + len - (p + 1));
306 if (! strcmp (buf + i, "nil"))
309 val = (void *) msymbol (buf + i);
311 else if (type == Mplist)
313 val = (void *) mplist__from_string ((unsigned char *) buf + i,
320 mchartable_set (table, from, val);
322 mchartable_set_range (table, from, to, val);
327 M17N_OBJECT_UNREF (table);
328 MERROR (MERROR_DB, NULL);
332 /** Load a data of type @c charset from the file FD. */
335 load_charset (FILE *fp, MSymbol charset_name)
337 MCharset *charset = MCHARSET (charset_name);
346 MERROR (MERROR_DB, NULL);
347 size = (charset->code_range[15]
348 - (charset->min_code - charset->code_range_min_code));
349 MTABLE_MALLOC (decoder, size, MERROR_DB);
350 for (i = 0; i < size; i++)
352 encoder = mchartable (Minteger, (void *) MCHAR_INVALID_CODE);
354 while ((c = getc (fp)) != EOF)
356 unsigned code1, code2, c1, c2;
361 fgets (buf, 256, fp);
364 if (sscanf (buf, "0x%x-0x%x 0x%x", &code1, &code2, &c1) == 3)
366 idx1 = CODE_POINT_TO_INDEX (charset, code1);
369 idx2 = CODE_POINT_TO_INDEX (charset, code2);
372 c2 = c1 + (idx2 - idx1);
374 else if (sscanf (buf, "0x%x 0x%x", &code1, &c1) == 2)
376 idx1 = idx2 = CODE_POINT_TO_INDEX (charset, code1);
383 if (idx1 >= 0 && idx2 >= 0)
386 mchartable_set (encoder, c1, (void *) code1);
387 for (idx1++, c1++; idx1 <= idx2; idx1++, c1++)
389 code1 = INDEX_TO_CODE_POINT (charset, idx1);
391 mchartable_set (encoder, c1, (void *) code1);
401 M17N_OBJECT_UNREF (encoder);
405 mplist_add (plist, Mt, decoder);
406 mplist_add (plist, Mt, encoder);
411 gen_database_name (char *buf, MSymbol *tags)
415 strcpy (buf, msymbol_name (tags[0]));
416 for (i = 1; i < 4; i++)
419 strcat (buf, msymbol_name (tags[i]));
425 get_database_stream (char *filename)
429 if (filename[0] == '/')
430 fp = fopen (filename, "r");
436 MPLIST_DO (plist, mdatabase__dir_list)
438 strcpy (path, (char *) MPLIST_VAL (plist));
439 strcat (path, filename);
440 fp = fopen (path, "r");
449 load_database (MSymbol *tags, void *extra_info)
451 FILE *fp = get_database_stream ((char *) extra_info);
455 MERROR (MERROR_DB, NULL);
457 if (tags[0] == Mchar_table)
458 value = load_chartable (fp, tags[1]);
459 else if (tags[0] == Mcharset)
460 value = load_charset (fp, tags[1]);
462 value = mplist__from_file (fp, NULL);
466 MERROR (MERROR_DB, NULL);
471 /** Copy DIRNAME to a newly allocated memory and return it. If
472 DIRNAME does not end with a slash, append a slash to the new memory. */
475 duplicate_dirname (char *dirname)
482 || stat (dirname, &buf) < 0)
485 len = strlen (dirname);
486 MTABLE_MALLOC (str, len + 2, MERROR_DB);
487 memcpy (str, dirname, len + 1);
488 if (str[len - 1] != '/')
499 /** List of database directories. */
500 MPlist *mdatabase__dir_list;
502 MSymbol M_database_hook;
512 Mchar_table = msymbol ("char-table");
513 M_database_hook = msymbol (" database-hook");
515 mdatabase__dir_list = mplist ();
516 /** The macro M17NDIR specifies a directory where the system-wide
517 MDB_DIR file exists. */
518 if ((dir = duplicate_dirname (M17NDIR)))
519 mplist_set (mdatabase__dir_list, Mt, dir);
521 /* The variable mdatabase_dir specifies a directory where an
522 application program specific MDB_DIR file exists. */
523 if ((dir = duplicate_dirname (mdatabase_dir)))
524 mplist_push (mdatabase__dir_list, Mt, dir);
526 /* The environment variable M17NDIR (if non-NULL) specifies a
527 directory where a user specific MDB_DIR file exists. */
528 if ((dir = duplicate_dirname (getenv ("M17NDIR"))))
529 mplist_push (mdatabase__dir_list, Mt, dir);
531 MLIST_INIT1 (&mdb_list, mdbs, 256);
532 MPLIST_DO (plist, mdatabase__dir_list)
538 dir = (char *) MPLIST_VAL (plist);
540 if (len + MDB_DIR_LEN >= PATH_MAX)
542 memcpy (path, dir, len);
543 memcpy (path + len, MDB_DIR, MDB_DIR_LEN);
544 if (! (fp = fopen (path, "r")))
546 pl = mplist__from_file (fp, NULL);
556 if (! MPLIST_PLIST_P (p))
558 for (i = 0, p1 = MPLIST_PLIST (p);
559 i < 4 && MPLIST_KEY (p1) == Msymbol;
560 i++, p1 = MPLIST_NEXT (p1))
561 mdb.tag[i] = MPLIST_SYMBOL (p1);
563 || ! MPLIST_MTEXT_P (p1))
567 if (mdatabase_find (mdb.tag[0], mdb.tag[1],
568 mdb.tag[2], mdb.tag[3]))
571 mdb.loader = load_database;
572 nbytes = mconv_encode_buffer (Mcoding_utf_8, MPLIST_MTEXT (p1),
573 (unsigned char *) path, PATH_MAX);
574 if (nbytes < 0 || nbytes >= PATH_MAX)
576 path[nbytes++] = '\0';
577 mdb.extra_info = (void *) strdup (path);
578 MLIST_APPEND1 (&mdb_list, mdbs, mdb, MERROR_DB);
580 M17N_OBJECT_UNREF (pl);
583 mdatabase__finder = ((void *(*) (MSymbol, MSymbol, MSymbol, MSymbol))
585 mdatabase__loader = (void *(*) (void *)) mdatabase_load;
591 mdatabase__fini (void)
596 MPLIST_DO (plist, mdatabase__dir_list)
597 free (MPLIST_VAL (plist));
598 M17N_OBJECT_UNREF (mdatabase__dir_list);
600 for (i = 0; i < mdb_list.used; i++)
602 MDatabase *mdb = mdb_list.mdbs + i;
604 if (mdb->loader == load_database)
605 free (mdb->extra_info);
607 MLIST_FREE1 (&mdb_list, mdbs);
611 mdatabase__load_for_keys (MDatabase *mdb, MPlist *keys)
613 int mdebug_mask = MDEBUG_DATABASE;
618 if (mdb->loader != load_database
619 || mdb->tag[0] == Mchar_table
620 || mdb->tag[0] == Mcharset)
621 MERROR (MERROR_DB, NULL);
622 MDEBUG_PRINT1 (" [DATABASE] loading <%s>.\n",
623 gen_database_name (buf, mdb->tag));
624 fp = get_database_stream ((char *) mdb->extra_info);
626 MERROR (MERROR_DB, NULL);
627 plist = mplist__from_file (fp, keys);
634 #endif /* !FOR_DOXYGEN || DOXYGEN_INTERNAL_MODULE */
639 /*** @addtogroup m17nDatabase */
644 @brief Directory for application specific data.
646 If an application program wants to provide a data specific to the
647 program or a data overriding what supplied by the m17n database,
648 it must set this variable to a name of directory that contains the
649 data files before it calls the macro M17N_INIT (). The directory
650 may contain a file "mdb.dir" which contains a list of data
651 definitions in the format described in @ref mdbDir "mdbDir(5)".
653 The default value is NULL. */
655 @brief ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¸ÇͤΥǡ¼¥¿Íѥǥ£¥ì¥¯¥È¥ê.
657 ¥¢¥×¥ê¥±¡¼¥·¥ç¥ó¥×¥í¥°¥é¥à¤¬¡¢¤½¤Î¥×¥í¥°¥é¥à¸ÇͤΥǡ¼¥¿¤ä m17n
658 ¥Ç¡¼¥¿¥Ù¡¼¥¹¤ò¾å½ñ¤¤¹¤ë¥Ç¡¼¥¿¤òÄ󶡤¹¤ë¾ì¹ç¤Ë¤Ï¡¢¥Þ¥¯¥í M17N_INIT ()
659 ¤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
660 "mdb.dir" ¥Õ¥¡¥¤¥ë¤ò¤ª¤¯¤³¤È¤¬¤Ç¤¤ë¡£¤½¤Î"mdb.dir"¥Õ¥¡¥¤¥ë¤Ë¤Ï¡¢
661 @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¡£
663 ¥Ç¥Õ¥©¥ë¥È¤ÎÃÍ¤Ï NULL ¤Ç¤¢¤ë¡£ */
669 @brief Look for a data in the database.
671 The mdatabase_find () function searches the m17n database for a
672 data who has tags $TAG0 through $TAG3, and returns a pointer to
673 the data. If such a data is not found, it returns @c NULL. */
676 @brief ¥Ç¡¼¥¿¥Ù¡¼¥¹Ãæ¤Î¥Ç¡¼¥¿¤òõ¤¹.
678 ´Ø¿ô mdatabase_find () ¤Ï¡¢ m17n ¸À¸ì¾ðÊó¥Ù¡¼¥¹Ãæ¤Ç $TAG0 ¤«¤é
679 $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
682 @latexonly \IPAlabel{mdatabase_find} @endlatexonly */
685 mdatabase_find (MSymbol tag0, MSymbol tag1, MSymbol tag2, MSymbol tag3)
688 MDatabaseHookFunc func
689 = (MDatabaseHookFunc) msymbol_get (tag0, M_database_hook);
692 func (tag0, tag1, tag2, tag3);
694 for (i = 0; i < mdb_list.used; i++)
696 MDatabase *mdb = mdb_list.mdbs + i;
698 if (tag0 == mdb->tag[0]
699 && tag1 == mdb->tag[1]
700 && tag2 == mdb->tag[2]
701 && tag3 == mdb->tag[3])
709 @brief Return a data list of the m17n database.
711 The mdatabase_list () function searches the m17n database for data
712 who have tags $TAG0 through $TAG3, and returns their list by a
713 plist. The value #Mnil in $TAGn means a wild card that matches
714 any tag. Each element of the plist has key #Mt and value a
715 pointer to type #MDatabase. */
717 @brief m17n ¥Ç¡¼¥¿¥Ù¡¼¥¹¤Î¥Ç¡¼¥¿¥ê¥¹¥È¤òÊÖ¤¹.
719 ´Ø¿ô mdatabase_list () ¤Ï m17n ¥Ç¡¼¥¿¥Ù¡¼¥¹Ã椫¤é $TAG0 ¤«¤é$TAG3
720 ¤Þ¤Ç¤Î¥¿¥°¤ò»ý¤Ä¥Ç¡¼¥¿¤òõ¤·¡¢¤½¤Î¥ê¥¹¥È¤òplist ¤È¤·¤ÆÊÖ¤¹¡£ $TAGn ¤¬ #Mnil
721 ¤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
722 plist ¤Î³ÆÍ×ÁǤϥ¡¼ ¤È¤·¤Æ #Mt ¤ò¡¢ÃͤȤ·¤Æ #MDatabase ·¿¤Ø¤Î¥Ý¥¤¥ó¥¿¤ò»ý¤Ä¡£ */
726 mdatabase_list (MSymbol tag0, MSymbol tag1, MSymbol tag2, MSymbol tag3)
729 MPlist *plist = NULL, *pl;
730 MDatabaseHookFunc func
731 = (MDatabaseHookFunc) msymbol_get (tag0, M_database_hook);
734 func (tag0, tag1, tag2, tag3);
736 for (i = 0; i < mdb_list.used; i++)
738 MDatabase *mdb = mdb_list.mdbs + i;
740 if ((tag0 == Mnil || tag0 == mdb->tag[0])
741 && (tag1 == Mnil || tag1 == mdb->tag[1])
742 && (tag2 == Mnil || tag2 == mdb->tag[2])
743 && (tag3 == Mnil || tag3 == mdb->tag[3]))
746 plist = pl = mplist ();
747 pl = mplist_add (pl, Mt, mdb);
757 @brief Define a data of the m17n database.
759 The mdatabase_define () function defines a data that has tags
760 $TAG0 through $TAG3 and additional information $EXTRA_INFO.
762 $LOADER is a pointer to a function that loads the data from the
763 database. This function is called from the mdatabase_load ()
764 function with the two arguments $TAGS and $EXTRA_INFO. Here,
765 $TAGS is the array of $TAG0 through $TAG3.
767 If $LOADER is @c NULL, the default loader of the m17n library is
768 used. In this case, $EXTRA_INFO must be a string specifying a
769 filename that contains the data.
772 If the operation was successful, mdatabase_define () returns a
773 pointer to the defined data, which can be used as an argument to
774 mdatabase_load (). Otherwise, it returns @c NULL. */
777 @brief m17n ¥Ç¡¼¥¿¥Ù¡¼¥¹¤Î¥Ç¡¼¥¿¤òÄêµÁ¤¹¤ë.
779 ´Ø¿ô mdatabase_define () ¤Ï $TAG0 ¤«¤é $TAG3 ¤Þ¤Ç¤Î¥¿¥°¤ª¤è¤ÓÉղþðÊó
780 $EXTRA_INFO ¤ò»ý¤Ä¥Ç¡¼¥¿¤òÄêµÁ¤¹¤ë¡£
782 $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
783 mdatabase_load () ¤«¤é $TAGS ¤È $EXTRA_INFO ¤È¤¤¤¦Æó¤Ä¤Î°ú¿ôÉÕ¤¤Ç¸Æ¤Ó½Ð¤µ¤ì¤ë¡£¤³¤³¤Ç
784 $TAGS ¤Ï $TAG0 ¤«¤é $TAG3 ¤Þ¤Ç¤ÎÇÛÎó¤Ç¤¢¤ë¡£
786 ¤â¤· $LOADER ¤¬ @c NULL ¤Ê¤é¡¢m17n ¥é¥¤¥Ö¥é¥êɸ½à¤Î¥í¡¼¥À¤¬»È¤ï¤ì¤ë¡£¤³¤Î¾ì¹ç¤Ë¤Ï
787 $EXTRA_INFO ¤Ï¥Ç¡¼¥¿¤ò´Þ¤à¥Õ¥¡¥¤¥ë̾¤Ç¤Ê¤¯¤Æ¤Ï¤Ê¤é¤Ê¤¤¡£
790 ½èÍý¤ËÀ®¸ù¤¹¤ì¤Ð mdatabase_define ()
791 ¤ÏÄêµÁ¤µ¤ì¤¿¥Ç¡¼¥¿¥Ù¡¼¥¹¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£¤³¤Î¥Ý¥¤¥ó¥¿¤Ï´Ø¿ô mdatabase_load ()
792 ¤Î°ú¿ô¤È¤·¤ÆÍѤ¤¤ë¤³¤È¤¬¤Ç¤¤ë¡£¤½¤¦¤Ç¤Ê¤±¤ì¤Ð @c NULL ¤òÊÖ¤¹¡£
794 @latexonly \IPAlabel{mdatabase_define} @endlatexonly */
798 mdatabase_load (), mdatabase_define () */
801 mdatabase_define (MSymbol tag0, MSymbol tag1, MSymbol tag2, MSymbol tag3,
802 void *(*loader) (MSymbol *, void *),
806 MDatabaseHookFunc func
807 = (MDatabaseHookFunc) msymbol_get (tag0, M_database_hook);
810 func (tag0, tag1, tag2, tag3);
812 mdb = mdatabase_find (tag0, tag1, tag2, tag3);
817 template.tag[0] = tag0, template.tag[1] = tag1;
818 template.tag[2] = tag2, template.tag[3] = tag3;
819 template.extra_info = NULL;
820 MLIST_APPEND1 (&mdb_list, mdbs, template, MERROR_DB);
821 mdb = mdb_list.mdbs + (mdb_list.used - 1);
823 mdb->loader = loader ? loader : load_database;
824 if (mdb->loader == load_database)
827 free (mdb->extra_info);
828 mdb->extra_info = strdup ((char *) extra_info);
831 mdb->extra_info = extra_info;
832 return (&(mdb_list.mdbs[mdb_list.used - 1]));
837 @brief Load a data from the database.
839 The mdatabase_load () function loads a data specified in $MDB and
840 returns the contents. The type of contents depends on the type of
843 If the data is of the @e plist @e type, this function returns a
846 If the database is of the @e chartable @e type, it returns a
847 chartable. The default value of the chartable is set according to
848 the second tag of the data as below:
850 @li If the tag is #Msymbol, the default value is #Mnil.
851 @li If the tag is #Minteger, the default value is -1.
852 @li Otherwise, the default value is @c NULL.
854 If the data is of the @e charset @e type, it returns a plist of length 2
855 (keys are both #Mt). The value of the first element is an array
856 of integers that maps code points to the corresponding character
857 codes. The value of the second element is a chartable of integers
858 that does the reverse mapping. The charset must be defined in
863 @brief ¥Ç¡¼¥¿¥Ù¡¼¥¹¤«¤é¥Ç¡¼¥¿¤ò¥í¡¼¥É¤¹¤ë.
865 ´Ø¿ô mdatabase_load () ¤Ï $MDB
866 ¤¬»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¡£
868 ¥Ç¡¼¥¿¤¬ @e plist¥¿¥¤¥× ¤Ê¤é¤Ð¡¢ @e plist ¤Ø¤Î¥Ý¥¤¥ó¥¿¤òÊÖ¤¹¡£
870 ¥Ç¡¼¥¿¤¬ @e chartable¥¿¥¤¥× ¤Ê¤é¤Ðʸ»ú¥Æ¡¼¥Ö¥ë¤òÊÖ¤¹¡£
871 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¡£
873 @li ¥¿¥°¤¬ #Msymbol ¤Ê¤é¡¢¥Ç¥Õ¥©¥ë¥ÈÃÍ¤Ï #Mnil
874 @li ¥¿¥°¤¬ #Minteger ¤Ê¤é¡¢¥Ç¥Õ¥©¥ë¥ÈÃÍ¤Ï -1
875 @li ¤½¤ì°Ê³°¤Ê¤é¡¢¥Ç¥Õ¥©¥ë¥ÈÃÍ¤Ï @c NULL
877 ¥Ç¡¼¥¿¤¬ @e charset¥¿¥¤¥× ¤Ê¤é¤ÐŤµ 2 ¤Î plist ¤òÊÖ¤¹¡Ê¥¡¼¤Ï¶¦¤Ë#Mt ¡Ë¡£
878 ºÇ½é¤ÎÍ×ÁǤÎÃͤϥ³¡¼¥É¥Ý¥¤¥ó¥È¤òÂбþ¤¹¤ëʸ»ú¥³¡¼¥É¤Ë¥Þ¥Ã¥×¤¹¤ëÀ°¿ô¤ÎÇÛÎó¤Ç¤¢¤ë¡£
879 £²ÈÖÌܤÎÍ×ÁǤÎÃͤϵդΥޥåפò¤¹¤ëʸ»ú¥Æ¡¼¥Ö¥ë¤Ç¤¢¤ë¡£
880 ¤³¤Îʸ»ú¥»¥Ã¥È¤Ïͽ¤áÄêµÁ¤µ¤ì¤Æ¤¤¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£
882 @latexonly \IPAlabel{mdatabase_load} @endlatexonly
887 mdatabase_load (), mdatabase_define () */
890 mdatabase_load (MDatabase *mdb)
892 int mdebug_mask = MDEBUG_DATABASE;
895 MDEBUG_PRINT1 (" [DATABASE] loading <%s>.\n",
896 gen_database_name (buf, mdb->tag));
897 return (*mdb->loader) (mdb->tag, mdb->extra_info);
902 @brief Get tags of a data.
904 The mdatabase_tag () function returns an array of tags (symbols)
905 that identify the data in $MDB. The length of the array is
909 @brief ¥Ç¡¼¥¿¤Î¥¿¥°¤òÆÀ¤ë.
911 ´Ø¿ô mdatabase_tag () ¤Ï¡¢¥Ç¡¼¥¿ $MDB ¤Î¥¿¥°¡Ê¥·¥ó¥Ü¥ë¡Ë¤ÎÇÛÎó¤òÊÖ¤¹¡£ÇÛÎó¤ÎŤµ¤Ï
914 @latexonly \IPAlabel{mdatabase_tag} @endlatexonly */
917 mdatabase_tag (MDatabase *mdb)