1 files changed, 127 insertions, 0 deletions
diff --git a/src/util/win32/utf-conv.h b/src/util/win32/utf-conv.h
new file mode 100644
index 0000000..301f5a6
--- /dev/null
+++ b/src/util/win32/utf-conv.h
@@ -0,0 +1,127 @@
+/*
+ * 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.
+ */
+#ifndef INCLUDE_win32_utf_conv_h__
+#define INCLUDE_win32_utf_conv_h__
+
+#include "git2_util.h"
+
+#include <wchar.h>
+
+#ifndef WC_ERR_INVALID_CHARS
+# define WC_ERR_INVALID_CHARS	0x80
+#endif
+
+/**
+ * Converts a NUL-terminated UTF-8 string to wide characters. This is a
+ * convenience function for `git_utf8_to_16_with_len`.
+ *
+ * @param dest The buffer to receive the wide string.
+ * @param dest_size The size of the buffer, in characters.
+ * @param src The UTF-8 string to convert.
+ * @return The length of the wide string, in characters
+ *         (not counting the NULL terminator), or < 0 for failure
+ */
+int git_utf8_to_16(wchar_t *dest, size_t dest_size, const char *src);
+
+/**
+ * Converts a UTF-8 string to wide characters.
+ *
+ * @param dest The buffer to receive the wide string.
+ * @param dest_size The size of the buffer, in characters.
+ * @param src The UTF-8 string to convert.
+ * @param src_len The length of the string to convert.
+ * @return The length of the wide string, in characters
+ *         (not counting the NULL terminator), or < 0 for failure
+ */
+int git_utf8_to_16_with_len(
+	wchar_t *dest,
+	size_t dest_size,
+	const char *src,
+	int src_len);
+
+/**
+ * Converts a NUL-terminated wide string to UTF-8. This is a convenience
+ * function for `git_utf8_from_16_with_len`.
+ *
+ * @param dest The buffer to receive the UTF-8 string.
+ * @param dest_size The size of the buffer, in bytes.
+ * @param src The wide string to convert.
+ * @param src_len The length of the string to convert.
+ * @return The length of the UTF-8 string, in bytes
+ *         (not counting the NULL terminator), or < 0 for failure
+ */
+int git_utf8_from_16(char *dest, size_t dest_size, const wchar_t *src);
+
+/**
+ * Converts a wide string to UTF-8.
+ *
+ * @param dest The buffer to receive the UTF-8 string.
+ * @param dest_size The size of the buffer, in bytes.
+ * @param src The wide string to convert.
+ * @param src_len The length of the string to convert.
+ * @return The length of the UTF-8 string, in bytes
+ *         (not counting the NULL terminator), or < 0 for failure
+ */
+int git_utf8_from_16_with_len(char *dest, size_t dest_size, const wchar_t *src, int src_len);
+
+/**
+ * Converts a UTF-8 string to wide characters. Memory is allocated to hold
+ * the converted string. The caller is responsible for freeing the string
+ * with git__free.
+ *
+ * @param dest Receives a pointer to the wide string.
+ * @param src The UTF-8 string to convert.
+ * @return The length of the wide string, in characters
+ *         (not counting the NULL terminator), or < 0 for failure
+ */
+int git_utf8_to_16_alloc(wchar_t **dest, const char *src);
+
+/**
+ * Converts a UTF-8 string to wide characters. Memory is allocated to hold
+ * the converted string. The caller is responsible for freeing the string
+ * with git__free.
+ *
+ * @param dest Receives a pointer to the wide string.
+ * @param src The UTF-8 string to convert.
+ * @param src_len The length of the string.
+ * @return The length of the wide string, in characters
+ *         (not counting the NULL terminator), or < 0 for failure
+ */
+int git_utf8_to_16_alloc_with_len(
+	wchar_t **dest,
+	const char *src,
+	int src_len);
+
+/**
+ * Converts a wide string to UTF-8. Memory is allocated to hold the
+ * converted string. The caller is responsible for freeing the string
+ * with git__free.
+ *
+ * @param dest Receives a pointer to the UTF-8 string.
+ * @param src The wide string to convert.
+ * @return The length of the UTF-8 string, in bytes
+ *         (not counting the NULL terminator), or < 0 for failure
+ */
+int git_utf8_from_16_alloc(char **dest, const wchar_t *src);
+
+/**
+ * Converts a wide string to UTF-8. Memory is allocated to hold the
+ * converted string. The caller is responsible for freeing the string
+ * with git__free.
+ *
+ * @param dest Receives a pointer to the UTF-8 string.
+ * @param src The wide string to convert.
+ * @param src_len The length of the wide string.
+ * @return The length of the UTF-8 string, in bytes
+ *         (not counting the NULL terminator), or < 0 for failure
+ */
+int git_utf8_from_16_alloc_with_len(
+	char **dest,
+	const wchar_t *src,
+	int src_len);
+
+#endif