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// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are

// met:

// * Redistributions of source code must retain the above copyright

// notice, this list of conditions and the following disclaimer.

// * Redistributions in binary form must reproduce the above

// copyright notice, this list of conditions and the following disclaimer

// in the documentation and/or other materials provided with the

// distribution.

// * Neither the name of Google Inc. nor the name Chromium Embedded

// Framework nor the names of its contributors may be used to endorse

// or promote products derived from this software without specific prior

// written permission.

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef CEF_INCLUDE_INTERNAL_CEF_STRING_TYPES_H_

#define CEF_INCLUDE_INTERNAL_CEF_STRING_TYPES_H_

#pragma once

// CEF provides functions for converting between UTF-8, -16 and -32 strings.

// CEF string types are safe for reading from multiple threads but not for

// modification. It is the user's responsibility to provide synchronization if

// modifying CEF strings from multiple threads.

#include <stddef.h>

#include "include/base/cef_basictypes.h"

#include "include/internal/cef_export.h"

#ifdef __cplusplus

extern "C" {

#endif

// CEF string type definitions. Whomever allocates |str| is responsible for

// providing an appropriate |dtor| implementation that will free the string in

// the same memory space. When reusing an existing string structure make sure

// values. Static strings will have a NULL |dtor| value. Using the below

// functions if you want this managed for you.

typedef struct _cef_string_wide_t {

wchar_t* str;

size_t length;

void (*dtor)(wchar_t* str);

} cef_string_wide_t;

typedef struct _cef_string_utf8_t {

char* str;

size_t length;

void (*dtor)(char* str);

} cef_string_utf8_t;

typedef struct _cef_string_utf16_t {

char16* str;

size_t length;

void (*dtor)(char16* str);

} cef_string_utf16_t;

///

// These functions set string values. If |copy| is true (1) the value will be

// copied instead of referenced. It is up to the user to properly manage

// the lifespan of references.

///

CEF_EXPORT int cef_string_wide_set(const wchar_t* src, size_t src_len,

cef_string_wide_t* output, int copy);

CEF_EXPORT int cef_string_utf8_set(const char* src, size_t src_len,

cef_string_utf8_t* output, int copy);

CEF_EXPORT int cef_string_utf16_set(const char16* src, size_t src_len,

cef_string_utf16_t* output, int copy);

///

// Convenience macros for copying values.

///

#define cef_string_wide_copy(src, src_len, output) \

cef_string_wide_set(src, src_len, output, true)

#define cef_string_utf8_copy(src, src_len, output) \

cef_string_utf8_set(src, src_len, output, true)

#define cef_string_utf16_copy(src, src_len, output) \

cef_string_utf16_set(src, src_len, output, true)

///

// These functions clear string values. The structure itself is not freed.

///

CEF_EXPORT void cef_string_wide_clear(cef_string_wide_t* str);

CEF_EXPORT void cef_string_utf8_clear(cef_string_utf8_t* str);

CEF_EXPORT void cef_string_utf16_clear(cef_string_utf16_t* str);

///

// These functions compare two string values with the same results as strcmp().

///

CEF_EXPORT int cef_string_wide_cmp(const cef_string_wide_t* str1,

const cef_string_wide_t* str2);

CEF_EXPORT int cef_string_utf8_cmp(const cef_string_utf8_t* str1,

const cef_string_utf8_t* str2);

CEF_EXPORT int cef_string_utf16_cmp(const cef_string_utf16_t* str1,

const cef_string_utf16_t* str2);

///

// These functions convert between UTF-8, -16, and -32 strings. They are

// potentially slow so unnecessary conversions should be avoided. The best

// possible result will always be written to |output| with the boolean return

// value indicating whether the conversion is 100% valid.

///

CEF_EXPORT int cef_string_wide_to_utf8(const wchar_t* src, size_t src_len,

cef_string_utf8_t* output);

CEF_EXPORT int cef_string_utf8_to_wide(const char* src, size_t src_len,

cef_string_wide_t* output);

CEF_EXPORT int cef_string_wide_to_utf16(const wchar_t* src, size_t src_len,

cef_string_utf16_t* output);

CEF_EXPORT int cef_string_utf16_to_wide(const char16* src, size_t src_len,

cef_string_wide_t* output);

CEF_EXPORT int cef_string_utf8_to_utf16(const char* src, size_t src_len,

cef_string_utf16_t* output);

CEF_EXPORT int cef_string_utf16_to_utf8(const char16* src, size_t src_len,

cef_string_utf8_t* output);

///

// These functions convert an ASCII string, typically a hardcoded constant, to a

// Wide/UTF16 string. Use instead of the UTF8 conversion routines if you know

// the string is ASCII.

///

CEF_EXPORT int cef_string_ascii_to_wide(const char* src, size_t src_len,

cef_string_wide_t* output);

CEF_EXPORT int cef_string_ascii_to_utf16(const char* src, size_t src_len,

cef_string_utf16_t* output);

///

// It is sometimes necessary for the system to allocate string structures with

// the expectation that the user will free them. The userfree types act as a

// hint that the user is responsible for freeing the structure.

///

typedef cef_string_wide_t* cef_string_userfree_wide_t;

typedef cef_string_utf8_t* cef_string_userfree_utf8_t;

typedef cef_string_utf16_t* cef_string_userfree_utf16_t;

///

// These functions allocate a new string structure. They must be freed by

// calling the associated free function.

///

CEF_EXPORT cef_string_userfree_wide_t cef_string_userfree_wide_alloc();

CEF_EXPORT cef_string_userfree_utf8_t cef_string_userfree_utf8_alloc();

CEF_EXPORT cef_string_userfree_utf16_t cef_string_userfree_utf16_alloc();

///

// These functions free the string structure allocated by the associated

// alloc function. Any string contents will first be cleared.

///

CEF_EXPORT void cef_string_userfree_wide_free(cef_string_userfree_wide_t str);

CEF_EXPORT void cef_string_userfree_utf8_free(cef_string_userfree_utf8_t str);

CEF_EXPORT void cef_string_userfree_utf16_free(cef_string_userfree_utf16_t str);

#ifdef __cplusplus

}

#endif

#endif // CEF_INCLUDE_INTERNAL_CEF_STRING_TYPES_H_

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