r13658: More moving around of files:

 - Collect the generic utility functions into a lib/util/ (a la GLib is
		for the GNOME folks)
 - Remove even more files from include/
(This used to be commit ba62880f5b05c2a505dc7f54676b231197a7e707)

1 files changed, 150 insertions, 0 deletions

diff --git a/source4/lib/util/util_unistr.c b/source4/lib/util/util_unistr.c
new file mode 100644
index 0000000000..b35822877c
--- /dev/null
+++ b/source4/lib/util/util_unistr.c
@@ -0,0 +1,150 @@
+/* 
+   Unix SMB/CIFS implementation.
+   Samba utility functions
+   Copyright (C) Andrew Tridgell 1992-2001
+   Copyright (C) Simo Sorce 2001
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "system/iconv.h"
+
+/* these 2 tables define the unicode case handling.  They are loaded
+   at startup either via mmap() or read() from the lib directory */
+static void *upcase_table;
+static void *lowcase_table;
+
+
+/*******************************************************************
+load the case handling tables
+********************************************************************/
+static void load_case_tables(void)
+{
+	TALLOC_CTX *mem_ctx;
+
+	mem_ctx = talloc_init("load_case_tables");
+	if (!mem_ctx) {
+		smb_panic("No memory for case_tables");
+	}
+	upcase_table = map_file(lib_path(mem_ctx, "upcase.dat"), 0x20000);
+	lowcase_table = map_file(lib_path(mem_ctx, "lowcase.dat"), 0x20000);
+	talloc_free(mem_ctx);
+	if (upcase_table == NULL) {
+		/* try also under codepages for testing purposes */
+		upcase_table = map_file("codepages/upcase.dat", 0x20000);
+		if (upcase_table == NULL) {
+			upcase_table = (void *)-1;
+		}
+	}
+	if (lowcase_table == NULL) {
+		/* try also under codepages for testing purposes */
+		lowcase_table = map_file("codepages/lowcase.dat", 0x20000);
+		if (lowcase_table == NULL) {
+			lowcase_table = (void *)-1;
+		}
+	}
+}
+
+/*******************************************************************
+ Convert a codepoint_t to upper case.
+********************************************************************/
+codepoint_t toupper_w(codepoint_t val)
+{
+	if (val < 128) {
+		return toupper(val);
+	}
+	if (upcase_table == NULL) {
+		load_case_tables();
+	}
+	if (upcase_table == (void *)-1) {
+		return val;
+	}
+	if (val & 0xFFFF0000) {
+		return val;
+	}
+	return SVAL(upcase_table, val*2);
+}
+
+/*******************************************************************
+ Convert a codepoint_t to lower case.
+********************************************************************/
+codepoint_t tolower_w(codepoint_t val)
+{
+	if (val < 128) {
+		return tolower(val);
+	}
+	if (lowcase_table == NULL) {
+		load_case_tables();
+	}
+	if (lowcase_table == (void *)-1) {
+		return val;
+	}
+	if (val & 0xFFFF0000) {
+		return val;
+	}
+	return SVAL(lowcase_table, val*2);
+}
+
+/*******************************************************************
+return the number of bytes occupied by a buffer in CH_UTF16 format
+the result includes the null termination
+********************************************************************/
+size_t utf16_len(const void *buf)
+{
+	size_t len;
+
+	for (len = 0; SVAL(buf,len); len += 2) ;
+
+	return len + 2;
+}
+
+/*******************************************************************
+return the number of bytes occupied by a buffer in CH_UTF16 format
+the result includes the null termination
+limited by 'n' bytes
+********************************************************************/
+size_t utf16_len_n(const void *src, size_t n)
+{
+	size_t len;
+
+	for (len = 0; (len+2 < n) && SVAL(src, len); len += 2) ;
+
+	if (len+2 <= n) {
+		len += 2;
+	}
+
+	return len;
+}
+
+
+size_t ucs2_align(const void *base_ptr, const void *p, int flags)
+{
+	if (flags & (STR_NOALIGN|STR_ASCII))
+		return 0;
+	return PTR_DIFF(p, base_ptr) & 1;
+}
+
+/*
+  compare two codepoints case insensitively
+*/
+int codepoint_cmpi(codepoint_t c1, codepoint_t c2)
+{
+	if (c1 == c2 ||
+	    toupper_w(c1) == toupper_w(c2)) {
+		return 0;
+	}
+	return c1 - c2;
+}