From 29b5ab554790bb57337a3b6ab9dcd963cf69d22e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 4 May 2024 14:47:08 +0200 Subject: Adding upstream version 1.7.2+ds. Signed-off-by: Daniel Baumann --- src/util/win32/utf-conv.c | 144 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 src/util/win32/utf-conv.c (limited to 'src/util/win32/utf-conv.c') diff --git a/src/util/win32/utf-conv.c b/src/util/win32/utf-conv.c new file mode 100644 index 0000000..ad35c0c --- /dev/null +++ b/src/util/win32/utf-conv.c @@ -0,0 +1,144 @@ +/* + * 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 "utf-conv.h" + +GIT_INLINE(void) git__set_errno(void) +{ + if (GetLastError() == ERROR_INSUFFICIENT_BUFFER) + errno = ENAMETOOLONG; + else + errno = EINVAL; +} + +int git_utf8_to_16(wchar_t *dest, size_t dest_size, const char *src) +{ + /* Length of -1 indicates NULL termination of the input string. */ + return git_utf8_to_16_with_len(dest, dest_size, src, -1); +} + +int git_utf8_to_16_with_len( + wchar_t *dest, + size_t _dest_size, + const char *src, + int src_len) +{ + int dest_size = (int)min(_dest_size, INT_MAX); + int len; + + /* + * Subtract 1 from the result to turn 0 into -1 (an error code) and + * to not count the NULL terminator as part of the string's length. + * MultiByteToWideChar never returns int's minvalue, so underflow + * is not possible. + */ + len = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, + src, src_len, dest, dest_size) - 1; + + if (len < 0) + git__set_errno(); + + return len; +} + +int git_utf8_from_16(char *dest, size_t dest_size, const wchar_t *src) +{ + /* Length of -1 indicates NULL termination of the input string. */ + return git_utf8_from_16_with_len(dest, dest_size, src, -1); +} + +int git_utf8_from_16_with_len( + char *dest, + size_t _dest_size, + const wchar_t *src, + int src_len) +{ + int dest_size = (int)min(_dest_size, INT_MAX); + int len; + + /* + * Subtract 1 from the result to turn 0 into -1 (an error code) and + * to not count the NULL terminator as part of the string's length. + * WideCharToMultiByte never returns int's minvalue, so underflow + * is not possible. + */ + len = WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, + src, src_len, dest, dest_size, NULL, NULL) - 1; + + if (len < 0) + git__set_errno(); + + return len; +} + +int git_utf8_to_16_alloc(wchar_t **dest, const char *src) +{ + /* Length of -1 indicates NULL termination of the input string. */ + return git_utf8_to_16_alloc_with_len(dest, src, -1); +} + +int git_utf8_to_16_alloc_with_len(wchar_t **dest, const char *src, int src_len) +{ + int utf16_size; + + *dest = NULL; + + utf16_size = MultiByteToWideChar(CP_UTF8, MB_ERR_INVALID_CHARS, + src, src_len, NULL, 0); + + if (!utf16_size) { + git__set_errno(); + return -1; + } + + *dest = git__mallocarray(utf16_size, sizeof(wchar_t)); + GIT_ERROR_CHECK_ALLOC(*dest); + + utf16_size = git_utf8_to_16_with_len(*dest, (size_t)utf16_size, + src, src_len); + + if (utf16_size < 0) { + git__free(*dest); + *dest = NULL; + } + + return utf16_size; +} + +int git_utf8_from_16_alloc(char **dest, const wchar_t *src) +{ + /* Length of -1 indicates NULL termination of the input string. */ + return git_utf8_from_16_alloc_with_len(dest, src, -1); +} + +int git_utf8_from_16_alloc_with_len(char **dest, const wchar_t *src, int src_len) +{ + int utf8_size; + + *dest = NULL; + + utf8_size = WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, + src, src_len, NULL, 0, NULL, NULL); + + if (!utf8_size) { + git__set_errno(); + return -1; + } + + *dest = git__malloc(utf8_size); + GIT_ERROR_CHECK_ALLOC(*dest); + + utf8_size = WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, + src, src_len, *dest, utf8_size, NULL, NULL); + + if (utf8_size < 0) { + git__free(*dest); + *dest = NULL; + } + + return utf8_size; +} -- cgit v1.2.3