Add 8-bit collate stuff

Submitted by: alex@elvisti.kiev.ua

1 files changed, 184 insertions, 0 deletions

diff --git a/lib/libc/locale/collate.c b/lib/libc/locale/collate.c
new file mode 100644
index 0000000..e597f04
--- /dev/null
+++ b/lib/libc/locale/collate.c
@@ -0,0 +1,184 @@
+/*-
+ * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
+ *		at Electronni Visti IA, Kiev, Ukraine.
+ *			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 ``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 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.
+ *
+ * $Id: collate.c,v 1.8 1995/01/27 12:51:06 alex Exp alex $
+ */
+
+#include <err.h>
+#include <rune.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include "collate.h"
+
+int __collate_load_error = 1;
+u_char __collate_charmap_table[UCHAR_MAX + 1][STR_LEN];
+u_char __collate_substitute_table[UCHAR_MAX + 1][STR_LEN];
+struct __collate_st_char_pri __collate_char_pri_table[UCHAR_MAX + 1];
+struct __collate_st_name_pri __collate_name_pri_table[TABLE_SIZE];
+struct __collate_st_chain_pri __collate_chain_pri_table[TABLE_SIZE];
+
+#define FREAD(a, b, c, d) \
+	do { \
+		if(fread(a, b, c, d) != c) { \
+			fclose(d); \
+			return -1; \
+		} \
+	} while(0)
+ 
+ int
+__collate_load_tables(encoding)
+	char *encoding;
+{
+	char buf[PATH_MAX];
+	static char *path_locale;
+	FILE *fp;
+
+	__collate_load_error = 1;
+	if (!encoding)
+		return -1;
+	if (!path_locale && !(path_locale = getenv("PATH_LOCALE")))
+		path_locale = _PATH_LOCALE;
+	strcpy(buf, path_locale);
+	strcat(buf, "/");
+	strcat(buf, encoding);
+	strcat(buf, "/LC_COLLATE");
+	if ((fp = fopen(buf, "r")) == NULL)
+		return -1;
+	FREAD(__collate_charmap_table, sizeof(__collate_charmap_table), 1, fp);
+	FREAD(__collate_substitute_table, sizeof(__collate_substitute_table),
+	      1, fp);
+	FREAD(__collate_char_pri_table, sizeof(__collate_char_pri_table), 1,
+	      fp);
+	FREAD(__collate_chain_pri_table, sizeof(__collate_chain_pri_table), 1,
+	      fp);
+	FREAD(__collate_name_pri_table, sizeof(__collate_name_pri_table), 1,
+	      fp);
+	fclose(fp);
+	__collate_load_error = 0;
+	return 0;
+}
+
+u_char *
+__collate_substitute(s)
+	const u_char *s;
+{
+	int dest_len = 0, len = 0;
+	int delta = strlen(s);
+	u_char *dest_str = 0;
+
+	if(s == 0 || *s == '\0')
+		return __collate_strdup("");
+	while(*s) {
+		len += strlen(__collate_substitute_table[*s]);
+		while(dest_len <= len) {
+			if(!dest_str)
+				dest_str = calloc(dest_len = delta, 1);
+			else
+				dest_str = realloc(dest_str, dest_len += delta);
+			if(!dest_str)
+				err(EX_OSERR, "%s(\"%s\")", __FUNCTION__, s);
+		}
+		strcat(dest_str, __collate_substitute_table[*s++]);
+	}
+	return dest_str;
+}
+
+void
+__collate_lookup(t, len, prim, sec)
+	u_char *t;
+	int *len, *prim, *sec;
+{
+	struct __collate_st_name_pri *p;
+	struct __collate_st_chain_pri *p2;
+
+	*len = 1;
+	*prim = *sec = 0;
+	if(__collate_charmap_table[*t][0]) {
+		for(p = __collate_name_pri_table; p->str[0]; p++) {
+			if(strncmp(__collate_charmap_table[*t], p->str, strlen(p->str))
+			   == 0) {
+				*prim = p->prim;
+				*sec = p->sec;
+				return;
+			}
+		}
+		return;
+	}
+	for(p2 = __collate_chain_pri_table; p2->str[0]; p2++) {
+		if(strncmp(t, p2->str, strlen(p2->str)) == 0) {
+			*len = strlen(p2->str);
+			*prim = p2->prim;
+			*sec = p2->sec;
+			return;
+		}
+	}
+	*prim = __collate_char_pri_table[*t].prim;
+	*sec = __collate_char_pri_table[*t].sec;
+}
+
+u_char *
+__collate_strdup(s)
+	u_char *s;
+{
+	void *t = strdup(s);
+
+	if (!t)
+		err(EX_OSERR, "__collate_strdup(\"%s\")", s);
+	return t;
+}
+
+#ifdef COLLATE_DEBUG
+void
+__collate_print_tables()
+{
+	int i;
+	struct __collate_st_name_pri *p;
+	struct __collate_st_chain_pri *p2;
+
+	printf("Substitute table:\n");
+	for (i = 0; i < UCHAR_MAX + 1; i++)
+		printf("\t'%c' --> \"%s\"\n", i,
+		       __collate_substitute_table[i]);
+	printf("Charmap table:\n");
+	for (i = 0; i < UCHAR_MAX + 1; i++) {
+		if (__collate_charmap_table[i][0])
+			printf("\t\\x%02x --> \"%s\"\n", i,
+			       __collate_charmap_table[i]);
+	}
+	printf("Name priority table:\n");
+	for (p = __collate_name_pri_table; p->str[0]; p++)
+		printf("\t\"%s\" : %d %d\n\n", p->str, p->prim, p->sec);
+	printf("Chain priority table:\n");
+	for (p2 = __collate_chain_pri_table; p2->str[0]; p2++)
+		printf("\t\"%s\" : %d %d\n\n", p2->str, p2->prim, p2->sec);
+	printf("Char priority table:\n");
+	for (i = 0; i < UCHAR_MAX + 1; i++)
+		printf("\t'%c' : %d %d\n", i, __collate_char_pri_table[i].prim,
+		       __collate_char_pri_table[i].sec);
+}
+#endif