The m17n library dynamically acquires various kinds of information
in need from data in the <i> m17n database</i>. Application
programs can also add/load their original data to/from the m17n
- database. The m17n database contains multiple heterogeneous data,
- and each data is identified by four tags; TAG0, TAG1, TAG2, TAG3.
- Each tag must be a symbol.
+ database by setting the variable #mdatabase_dir to an
+ application-specific directory and storing data in it. Users can
+ overwrite those data by storing overwriting-data in the directory
+ "~/.m17n.d" or in a directory specified by the environment
+ variable "M17NDIR".
+
+ The m17n database contains multiple heterogeneous data, and each
+ data is identified by four tags; TAG0, TAG1, TAG2, TAG3. Each tag
+ must be a symbol.
TAG0 specifies the type of data stored in the database as below.
#define MAX_TIME(TIME1, TIME2) ((TIME1) >= (TIME2) ? (TIME1) : (TIME2))
+#ifndef PATH_MAX
+#define PATH_MAX 1024
+#endif
+
+#define PATH_SEPARATOR '/'
+
+#define USE_GEN_PATH \
+ char _path_static[PATH_MAX], *_path = _path_static; \
+ int _path_len = PATH_MAX, _this_len
+
+#define GEN_PATH(DIR, FILE) \
+ (_this_len = strlen (DIR) + strlen (FILE) + 2, \
+ sprintf (((_this_len > _path_len) \
+ ? (_path_len = _this_len, _path = alloca (_path_len)) : _path), \
+ "%s%c%s", (DIR), PATH_SEPARATOR, (FILE)), \
+ _path)
+
+#define GEN_PATH_FROM_MT(DIR, MT) \
+ (mtext_ref_char ((MT), 0) == PATH_SEPARATOR \
+ ? (_this_len = mtext_nbytes (MT) + 1, \
+ (_this_len > _path_len \
+ ? (_path_len = _this_len, _path = alloca (_path_len)) \
+ : _path)[_this_len - 1] = '\0', \
+ memcpy (_path, MTEXT_DATA (MT), mtext_nbytes (MT))) \
+ : (_this_len = strlen (DIR) + mtext_nbytes (MT) + 2, \
+ (_this_len > _path_len \
+ ? (_path_len = _this_len, _path = alloca (_path_len)) \
+ : _path)[_this_len - 1] = '\0', \
+ memcpy (_path + sprintf (_path, "%s%c", (DIR), PATH_SEPARATOR), \
+ MTEXT_DATA (MT), mtext_nbytes (MT)), \
+ _path))
+
static MSymbol Masterisk;
/** Structure for a data in the m17n database. */
else
{
MPlist *plist;
- char *path;
- int filelen = strlen (db_info->filename);
- USE_SAFE_ALLOCA;
+ USE_GEN_PATH;
MPLIST_DO (plist, mdatabase__dir_list)
{
MDatabaseInfo *dir_info = MPLIST_VAL (plist);
- int require = strlen (dir_info->filename) + filelen + 1;
+ char *path = GEN_PATH (dir_info->filename, db_info->filename);
- SAFE_ALLOCA (path, require);
- strcpy (path, dir_info->filename);
- strcat (path, db_info->filename);
if (stat (path, &buf) == 0)
{
free (db_info->filename);
break;
}
}
- SAFE_FREE (path);
}
return filename;
}
return NULL;
MSTRUCT_MALLOC (dir_info, MERROR_DB);
- len = strlen (dirname);
- MTABLE_MALLOC (dir_info->filename, len + 2, MERROR_DB);
- memcpy (dir_info->filename, dirname, len + 1);
- if (dir_info->filename[len - 1] != '/')
- {
- dir_info->filename[len] = '/';
- dir_info->filename[len + 1] = '\0';
- }
+ len = strlen (dirname) + 1;
+ MTABLE_MALLOC (dir_info->filename, len, MERROR_DB);
+ memcpy (dir_info->filename, dirname, len);
+ /* Don't include the last '/' in filename. */
+ if (dir_info->filename[len - 2] == PATH_SEPARATOR)
+ dir_info->filename[len - 2] = '\0';
/* Set this to zero so that the first call of update_database_list
surely checks this directory. */
dir_info->time = 0;
}
static void
+register_database (MDatabase *mdb, char *path)
+{
+ if (find_database (mdb->tag[0], mdb->tag[1], mdb->tag[2], mdb->tag[3]))
+ return;
+ mdb->loader = load_database;
+ mdb->extra_info = calloc (1, sizeof (MDatabaseInfo));
+ if (! mdb->extra_info)
+ MEMORY_FULL (MERROR_DB);
+ ((MDatabaseInfo*) mdb->extra_info)->filename = strdup (path);
+ MLIST_APPEND1 (&mdb_list, mdbs, *mdb, MERROR_DB);
+ if (mdb->tag[0] == Mchar_table
+ && mdb->tag[2] != Mnil
+ && (mdb->tag[1] == Mstring || mdb->tag[1] == Mtext
+ || mdb->tag[1] == Msymbol || mdb->tag[1] == Minteger
+ || mdb->tag[1] == Mplist))
+ mchar__define_prop (mdb->tag[2], mdb->tag[1],
+ mdb_list.mdbs + mdb_list.used - 1);
+}
+
+static void
update_database_list ()
{
MPlist *plist;
- char *path;
- USE_SAFE_ALLOCA;
-
- /* Usually this avoids path to be reallocated. */
- SAFE_ALLOCA (path, 256);
+ char *path, *file;
+ USE_GEN_PATH;
MPLIST_DO (plist, mdatabase__dir_list)
{
MPlist *pl, *p;
int i, j, len;
FILE *fp;
+ char *file;
if (stat (dir_info->filename, &statbuf) < 0)
continue;
&& dir_info->time >= statbuf.st_mtime)
continue;
dir_info->time = MAX_TIME (statbuf.st_ctime, statbuf.st_mtime);
- len = strlen (dir_info->filename);
-#ifdef PATH_MAX
- if (len + MDB_DIR_LEN >= PATH_MAX)
- continue;
-#endif /* PATH_MAX */
- SAFE_ALLOCA (path, len + MDB_DIR_LEN + 1);
- memcpy (path, dir_info->filename, len);
- memcpy (path + len, MDB_DIR, MDB_DIR_LEN);
- path[len + MDB_DIR_LEN] = '\0';
+ path = GEN_PATH (dir_info->filename, MDB_DIR);
if (! (fp = fopen (path, "r")))
continue;
pl = mplist__from_file (fp, NULL);
&& mdb.tag[0] != Mchar_table
&& mdb.tag[0] != Mcharset)
{
- glob_t globbuf;
- MPlist *load_key;
+ MPlist *dlist;
+ MPlist *load_key = mplist ();
- SAFE_ALLOCA (path, len + nbytes + 1);
- memcpy (path, dir_info->filename, len);
- memcpy (path + len, mt->data, nbytes);
- path[len + nbytes] = '\0';
-
- if (glob (path, GLOB_NOSORT | GLOB_NOCHECK, NULL, &globbuf) != 0)
- continue;
- load_key = mplist ();
- for (i = 0; i < globbuf.gl_pathc; i++)
+ MPLIST_DO (dlist, mdatabase__dir_list)
{
- if (! (fp = fopen (globbuf.gl_pathv[i], "r")))
- continue;
- p1 = mplist__from_file (fp, load_key);
- fclose (fp);
- if (! p1)
- continue;
- if (MPLIST_PLIST_P (p1))
+ MDatabaseInfo *d_info = MPLIST_VAL (dlist);
+ glob_t globbuf;
+
+ path = GEN_PATH_FROM_MT (d_info->filename, mt);
+ if (glob (path, GLOB_NOSORT | GLOB_NOCHECK, NULL, &globbuf))
{
- MPlist *p0;
- MDatabase mdb2;
-
- for (j = 0, p0 = MPLIST_PLIST (p1);
- j < 4 && MPLIST_SYMBOL_P (p0);
- j++, p0 = MPLIST_NEXT (p0))
- mdb2.tag[j] = MPLIST_SYMBOL (p0);
- for (; j < 4; j++)
- mdb2.tag[j] = Mnil;
- for (j = 0; j < 4; j++)
- if (mdb.tag[j] == Masterisk
- ? mdb2.tag[j] == Mnil
- : (mdb.tag[j] != Mnil && mdb.tag[j] != mdb2.tag[j]))
- break;
- if (j == 4
- && ! find_database (mdb2.tag[0], mdb2.tag[1],
- mdb2.tag[2], mdb2.tag[3]))
+ if (path[0] == PATH_SEPARATOR)
+ break;
+ continue;
+ }
+ for (i = 0; i < globbuf.gl_pathc; i++)
+ {
+ if (! (fp = fopen (globbuf.gl_pathv[i], "r")))
+ continue;
+ p1 = mplist__from_file (fp, load_key);
+ fclose (fp);
+ if (! p1)
+ continue;
+ if (MPLIST_PLIST_P (p1))
{
- mdb2.loader = load_database;
- mdb2.extra_info = calloc (1, sizeof (MDatabaseInfo));
- if (! mdb2.extra_info)
- MEMORY_FULL (MERROR_DB);
- ((MDatabaseInfo*) mdb2.extra_info)->filename
- = strdup (globbuf.gl_pathv[i]);
- MLIST_APPEND1 (&mdb_list, mdbs, mdb2, MERROR_DB);
- if (mdb2.tag[0] == Mchar_table
- && mdb2.tag[2] != Mnil
- && (mdb2.tag[1] == Mstring
- || mdb2.tag[1] == Mtext
- || mdb2.tag[1] == Msymbol
- || mdb2.tag[1] == Minteger
- || mdb2.tag[1] == Mplist))
- mchar__define_prop (mdb2.tag[2], mdb2.tag[1],
- (mdb_list.mdbs
- + mdb_list.used - 1));
+ MPlist *p0;
+ MDatabase mdb2;
+
+ for (j = 0, p0 = MPLIST_PLIST (p1);
+ j < 4 && MPLIST_SYMBOL_P (p0);
+ j++, p0 = MPLIST_NEXT (p0))
+ mdb2.tag[j] = MPLIST_SYMBOL (p0);
+ for (; j < 4; j++)
+ mdb2.tag[j] = Mnil;
+ for (j = 0; j < 4; j++)
+ if (mdb.tag[j] == Masterisk
+ ? mdb2.tag[j] == Mnil
+ : (mdb.tag[j] != Mnil
+ && mdb.tag[j] != mdb2.tag[j]))
+ break;
+ if (j == 4)
+ register_database (&mdb2, globbuf.gl_pathv[i]);
}
+ M17N_OBJECT_UNREF (p1);
}
- M17N_OBJECT_UNREF (p1);
+ globfree (&globbuf);
+ if (MTEXT_DATA (mt)[0] == PATH_SEPARATOR)
+ break;
}
+
M17N_OBJECT_UNREF (load_key);
- globfree (&globbuf);
}
else
{
- if (find_database (mdb.tag[0], mdb.tag[1],
- mdb.tag[2], mdb.tag[3]))
- continue;
- SAFE_ALLOCA (path, nbytes + 1);
- memcpy (path, mt->data, nbytes);
- path[nbytes] = '\0';
- mdb.extra_info = calloc (1, sizeof (MDatabaseInfo));
- if (! mdb.extra_info)
- MEMORY_FULL (MERROR_DB);
- ((MDatabaseInfo*) mdb.extra_info)->filename = strdup (path);
- MLIST_APPEND1 (&mdb_list, mdbs, mdb, MERROR_DB);
- if (mdb.tag[0] == Mchar_table
- && mdb.tag[2] != Mnil
- && (mdb.tag[1] == Mstring
- || mdb.tag[1] == Mtext
- || mdb.tag[1] == Msymbol
- || mdb.tag[1] == Minteger
- || mdb.tag[1] == Mplist))
- mchar__define_prop (mdb.tag[2], mdb.tag[1],
- mdb_list.mdbs + mdb_list.used - 1);
+ path = GEN_PATH_FROM_MT (dir_info->filename, mt);
+ register_database (&mdb, path);
}
}
M17N_OBJECT_UNREF (pl);
}
-
- SAFE_FREE (path);
}
\f
directory where a user specific MDB_DIR file exists. */
if ((dir_info = get_dir_info (getenv ("M17NDIR"))))
mplist_push (mdatabase__dir_list, Mt, dir_info);
+ /* If M17NDIR is not set, check "~/.m17n.d". */
+ else
+ {
+ char *home = getenv ("HOME");
+ USE_GEN_PATH;
+
+ if (home
+ && (dir_info = get_dir_info (GEN_PATH (home, ".m17n.d"))))
+ mplist_push (mdatabase__dir_list, Mt, dir_info);
+ }
MLIST_INIT1 (&mdb_list, mdbs, 256);
update_database_list ();
projects / m17n / m17n-lib.git / commitdiff