blob: 7b9b90e11ea581f684d0190d200d75c9af0f0d2a [file] [log] [blame]
// Copyright 2011 Google Inc. All Rights Reserved.
#ifndef ART_SRC_UTF_H_
#define ART_SRC_UTF_H_
#include <stddef.h>
#include <stdint.h>
* All UTF-8 in art is actually modified UTF-8. Mostly, this distinction
* doesn't matter.
* See for the details.
namespace art {
template<class T> class PrimitiveArray;
typedef PrimitiveArray<uint16_t> CharArray;
* Returns the number of UTF-16 characters in the given modified UTF-8 string.
size_t CountModifiedUtf8Chars(const char* utf8);
* Returns the number of modified UTF-8 bytes needed to represent the given
* UTF-16 string.
size_t CountUtf8Bytes(const uint16_t* chars, size_t char_count);
* Convert from Modified UTF-8 to UTF-16.
void ConvertModifiedUtf8ToUtf16(uint16_t* utf16_out, const char* utf8_in);
* Convert from UTF-16 to Modified UTF-8. Note that the output is _not_
* NUL-terminated. You probably need to call CountUtf8Bytes before calling
* this anyway, so if you want a NUL-terminated string, you know where to
* put the NUL byte.
void ConvertUtf16ToModifiedUtf8(char* utf8_out, const uint16_t* utf16_in, size_t char_count);
* The java.lang.String hashCode() algorithm.
int32_t ComputeUtf16Hash(const CharArray* chars, int32_t offset, size_t char_count);
int32_t ComputeUtf16Hash(const uint16_t* chars, size_t char_count);
* Retrieve the next UTF-16 character from a UTF-8 string.
* Advances "*utf8_data_in" to the start of the next character.
* WARNING: If a string is corrupted by dropping a '\0' in the middle
* of a 3-byte sequence, you can end up overrunning the buffer with
* reads (and possibly with the writes if the length was computed and
* cached before the damage). For performance reasons, this function
* assumes that the string being parsed is known to be valid (e.g., by
* already being verified). Most strings we process here are coming
* out of dex files or other internal translations, so the only real
* risk comes from the JNI NewStringUTF call.
uint16_t GetUtf16FromUtf8(const char** utf8_data_in);
} // namespace art
#endif // ART_SRC_UTF_H_