+++ /dev/null
-/*
- * Copyright (C) the libgit2 contributors. All rights reserved.
- *
- * This file is part of libgit2, distributed under the GNU GPL v2 with
- * a Linking Exception. For full terms see the included COPYING file.
- */
-
-#include "utf8.h"
-
-#include "common.h"
-
-/*
- * git_utf8_iterate is taken from the utf8proc project,
- * http://www.public-software-group.org/utf8proc
- *
- * Copyright (c) 2009 Public Software Group e. V., Berlin, Germany
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the ""Software""),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-static const uint8_t utf8proc_utf8class[256] = {
- 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,
- 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,
- 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,
- 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,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0, 0, 0, 0
-};
-
-static int utf8_charlen(const uint8_t *str, size_t str_len)
-{
- uint8_t length;
- size_t i;
-
- length = utf8proc_utf8class[str[0]];
- if (!length)
- return -1;
-
- if (str_len > 0 && length > str_len)
- return -1;
-
- for (i = 1; i < length; i++) {
- if ((str[i] & 0xC0) != 0x80)
- return -1;
- }
-
- return (int)length;
-}
-
-int git_utf8_iterate(uint32_t *out, const char *_str, size_t str_len)
-{
- const uint8_t *str = (const uint8_t *)_str;
- uint32_t uc = 0;
- int length;
-
- *out = 0;
-
- if ((length = utf8_charlen(str, str_len)) < 0)
- return -1;
-
- switch (length) {
- case 1:
- uc = str[0];
- break;
- case 2:
- uc = ((str[0] & 0x1F) << 6) + (str[1] & 0x3F);
- if (uc < 0x80) uc = -1;
- break;
- case 3:
- uc = ((str[0] & 0x0F) << 12) + ((str[1] & 0x3F) << 6)
- + (str[2] & 0x3F);
- if (uc < 0x800 || (uc >= 0xD800 && uc < 0xE000) ||
- (uc >= 0xFDD0 && uc < 0xFDF0)) uc = -1;
- break;
- case 4:
- uc = ((str[0] & 0x07) << 18) + ((str[1] & 0x3F) << 12)
- + ((str[2] & 0x3F) << 6) + (str[3] & 0x3F);
- if (uc < 0x10000 || uc >= 0x110000) uc = -1;
- break;
- default:
- return -1;
- }
-
- if ((uc & 0xFFFF) >= 0xFFFE)
- return -1;
-
- *out = uc;
- return length;
-}
-
-size_t git_utf8_char_length(const char *_str, size_t str_len)
-{
- const uint8_t *str = (const uint8_t *)_str;
- size_t offset = 0, count = 0;
-
- while (offset < str_len) {
- int length = utf8_charlen(str + offset, str_len - offset);
-
- if (length < 0)
- length = 1;
-
- offset += length;
- count++;
- }
-
- return count;
-}
-
-size_t git_utf8_valid_buf_length(const char *_str, size_t str_len)
-{
- const uint8_t *str = (const uint8_t *)_str;
- size_t offset = 0;
-
- while (offset < str_len) {
- int length = utf8_charlen(str + offset, str_len - offset);
-
- if (length < 0)
- break;
-
- offset += length;
- }
-
- return offset;
-}
projects / libgit2.git / blobdiff