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-rw-r--r--ldap/c-sdk/libraries/libldap/utf8.c282
1 files changed, 282 insertions, 0 deletions
diff --git a/ldap/c-sdk/libraries/libldap/utf8.c b/ldap/c-sdk/libraries/libldap/utf8.c
new file mode 100644
index 000000000..98957cc5b
--- /dev/null
+++ b/ldap/c-sdk/libraries/libldap/utf8.c
@@ -0,0 +1,282 @@
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Communicator client code, released
+ * March 31, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/* uft8.c - misc. utf8 "string" functions. */
+#include "ldap-int.h"
+
+static char UTF8len[64]
+= {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 5, 6};
+
+int
+LDAP_CALL
+ldap_utf8len (const char* s)
+ /* Return the number of char's in the character at *s. */
+{
+ return ldap_utf8next((char*)s) - s;
+}
+
+char*
+LDAP_CALL
+ldap_utf8next (char* s)
+ /* Return a pointer to the character immediately following *s.
+ Handle any valid UTF-8 character, including '\0' and ASCII.
+ Try to handle a misaligned pointer or a malformed character.
+ */
+{
+ register unsigned char* next = (unsigned char*)s;
+ switch (UTF8len [(*next >> 2) & 0x3F]) {
+ case 0: /* erroneous: s points to the middle of a character. */
+ case 6: if ((*++next & 0xC0) != 0x80) break;
+ case 5: if ((*++next & 0xC0) != 0x80) break;
+ case 4: if ((*++next & 0xC0) != 0x80) break;
+ case 3: if ((*++next & 0xC0) != 0x80) break;
+ case 2: if ((*++next & 0xC0) != 0x80) break;
+ case 1: ++next;
+ }
+ return (char*) next;
+}
+
+char*
+LDAP_CALL
+ldap_utf8prev (char* s)
+ /* Return a pointer to the character immediately preceding *s.
+ Handle any valid UTF-8 character, including '\0' and ASCII.
+ Try to handle a misaligned pointer or a malformed character.
+ */
+{
+ register unsigned char* prev = (unsigned char*)s;
+ unsigned char* limit = prev - 6;
+ while (((*--prev & 0xC0) == 0x80) && (prev != limit)) {
+ ;
+ }
+ return (char*) prev;
+}
+
+int
+LDAP_CALL
+ldap_utf8copy (char* dst, const char* src)
+ /* Copy a character from src to dst; return the number of char's copied.
+ Handle any valid UTF-8 character, including '\0' and ASCII.
+ Try to handle a misaligned pointer or a malformed character.
+ */
+{
+ register const unsigned char* s = (const unsigned char*)src;
+ switch (UTF8len [(*s >> 2) & 0x3F]) {
+ case 0: /* erroneous: s points to the middle of a character. */
+ case 6: *dst++ = *s++; if ((*s & 0xC0) != 0x80) break;
+ case 5: *dst++ = *s++; if ((*s & 0xC0) != 0x80) break;
+ case 4: *dst++ = *s++; if ((*s & 0xC0) != 0x80) break;
+ case 3: *dst++ = *s++; if ((*s & 0xC0) != 0x80) break;
+ case 2: *dst++ = *s++; if ((*s & 0xC0) != 0x80) break;
+ case 1: *dst = *s++;
+ }
+ return s - (const unsigned char*)src;
+}
+
+size_t
+LDAP_CALL
+ldap_utf8characters (const char* src)
+ /* Return the number of UTF-8 characters in the 0-terminated array s. */
+{
+ register char* s = (char*)src;
+ size_t n;
+ for (n = 0; *s; LDAP_UTF8INC(s)) ++n;
+ return n;
+}
+
+unsigned long LDAP_CALL
+ldap_utf8getcc( const char** src )
+{
+ register unsigned long c = 0;
+ register const unsigned char* s = (const unsigned char*)*src;
+ switch (UTF8len [(*s >> 2) & 0x3F]) {
+ case 0: /* erroneous: s points to the middle of a character. */
+ c = (*s++) & 0x3F; goto more5;
+ case 1: c = (*s++); break;
+ case 2: c = (*s++) & 0x1F; goto more1;
+ case 3: c = (*s++) & 0x0F; goto more2;
+ case 4: c = (*s++) & 0x07; goto more3;
+ case 5: c = (*s++) & 0x03; goto more4;
+ case 6: c = (*s++) & 0x01; goto more5;
+ more5: if ((*s & 0xC0) != 0x80) break; c = (c << 6) | ((*s++) & 0x3F);
+ more4: if ((*s & 0xC0) != 0x80) break; c = (c << 6) | ((*s++) & 0x3F);
+ more3: if ((*s & 0xC0) != 0x80) break; c = (c << 6) | ((*s++) & 0x3F);
+ more2: if ((*s & 0xC0) != 0x80) break; c = (c << 6) | ((*s++) & 0x3F);
+ more1: if ((*s & 0xC0) != 0x80) break; c = (c << 6) | ((*s++) & 0x3F);
+ break;
+ }
+ *src = (const char*)s;
+ return c;
+}
+
+char*
+LDAP_CALL
+ldap_utf8strtok_r( char* sp, const char* brk, char** next)
+{
+ const char *bp;
+ unsigned long sc, bc;
+ char *tok;
+
+ if (sp == NULL && (sp = *next) == NULL)
+ return NULL;
+
+ /* Skip leading delimiters; roughly, sp += strspn(sp, brk) */
+ cont:
+ sc = LDAP_UTF8GETC(sp);
+ for (bp = brk; (bc = LDAP_UTF8GETCC(bp)) != 0;) {
+ if (sc == bc)
+ goto cont;
+ }
+
+ if (sc == 0) { /* no non-delimiter characters */
+ *next = NULL;
+ return NULL;
+ }
+ tok = LDAP_UTF8PREV(sp);
+
+ /* Scan token; roughly, sp += strcspn(sp, brk)
+ * Note that brk must be 0-terminated; we stop if we see that, too.
+ */
+ while (1) {
+ sc = LDAP_UTF8GETC(sp);
+ bp = brk;
+ do {
+ if ((bc = LDAP_UTF8GETCC(bp)) == sc) {
+ if (sc == 0) {
+ *next = NULL;
+ } else {
+ *next = sp;
+ *(LDAP_UTF8PREV(sp)) = 0;
+ }
+ return tok;
+ }
+ } while (bc != 0);
+ }
+ /* NOTREACHED */
+}
+
+int
+LDAP_CALL
+ldap_utf8isalnum( char* s )
+{
+ register unsigned char c = *(unsigned char*)s;
+ if (0x80 & c) return 0;
+ if (c >= 'A' && c <= 'Z') return 1;
+ if (c >= 'a' && c <= 'z') return 1;
+ if (c >= '0' && c <= '9') return 1;
+ return 0;
+}
+
+int
+LDAP_CALL
+ldap_utf8isalpha( char* s )
+{
+ register unsigned char c = *(unsigned char*)s;
+ if (0x80 & c) return 0;
+ if (c >= 'A' && c <= 'Z') return 1;
+ if (c >= 'a' && c <= 'z') return 1;
+ return 0;
+}
+
+int
+LDAP_CALL
+ldap_utf8isdigit( char* s )
+{
+ register unsigned char c = *(unsigned char*)s;
+ if (0x80 & c) return 0;
+ if (c >= '0' && c <= '9') return 1;
+ return 0;
+}
+
+int
+LDAP_CALL
+ldap_utf8isxdigit( char* s )
+{
+ register unsigned char c = *(unsigned char*)s;
+ if (0x80 & c) return 0;
+ if (c >= '0' && c <= '9') return 1;
+ if (c >= 'A' && c <= 'F') return 1;
+ if (c >= 'a' && c <= 'f') return 1;
+ return 0;
+}
+
+int
+LDAP_CALL
+ldap_utf8isspace( char* s )
+{
+ register unsigned char *c = (unsigned char*)s;
+ int len = ldap_utf8len(s);
+
+ if (len == 0) {
+ return 0;
+ } else if (len == 1) {
+ switch (*c) {
+ case 0x09:
+ case 0x0A:
+ case 0x0B:
+ case 0x0C:
+ case 0x0D:
+ case 0x20:
+ return 1;
+ default:
+ return 0;
+ }
+ } else if (len == 2) {
+ if (*c == 0xc2) {
+ return *(c+1) == 0x80;
+ }
+ } else if (len == 3) {
+ if (*c == 0xE2) {
+ c++;
+ if (*c == 0x80) {
+ c++;
+ return (*c>=0x80 && *c<=0x8a);
+ }
+ } else if (*c == 0xE3) {
+ return (*(c+1)==0x80) && (*(c+2)==0x80);
+ } else if (*c==0xEF) {
+ return (*(c+1)==0xBB) && (*(c+2)==0xBF);
+ }
+ return 0;
+ }
+
+ /* should never reach here */
+ return 0;
+}
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