84 lines
3.0 KiB
C++
84 lines
3.0 KiB
C++
// © 2017 and later: Unicode, Inc. and others.
|
|
// License & terms of use: http://www.unicode.org/copyright.html
|
|
|
|
// bytesinkutil.h
|
|
// created: 2017sep14 Markus W. Scherer
|
|
|
|
#include "unicode/utypes.h"
|
|
#include "unicode/bytestream.h"
|
|
#include "unicode/edits.h"
|
|
#include "cmemory.h"
|
|
#include "uassert.h"
|
|
|
|
U_NAMESPACE_BEGIN
|
|
|
|
class ByteSink;
|
|
class CharString;
|
|
class Edits;
|
|
|
|
class U_COMMON_API ByteSinkUtil {
|
|
public:
|
|
ByteSinkUtil() = delete; // all static
|
|
|
|
/** (length) bytes were mapped to valid (s16, s16Length). */
|
|
static UBool appendChange(int32_t length,
|
|
const char16_t *s16, int32_t s16Length,
|
|
ByteSink &sink, Edits *edits, UErrorCode &errorCode);
|
|
|
|
/** The bytes at [s, limit[ were mapped to valid (s16, s16Length). */
|
|
static UBool appendChange(const uint8_t *s, const uint8_t *limit,
|
|
const char16_t *s16, int32_t s16Length,
|
|
ByteSink &sink, Edits *edits, UErrorCode &errorCode);
|
|
|
|
/** (length) bytes were mapped/changed to valid code point c. */
|
|
static void appendCodePoint(int32_t length, UChar32 c, ByteSink &sink, Edits *edits = nullptr);
|
|
|
|
/** The few bytes at [src, nextSrc[ were mapped/changed to valid code point c. */
|
|
static inline void appendCodePoint(const uint8_t *src, const uint8_t *nextSrc, UChar32 c,
|
|
ByteSink &sink, Edits *edits = nullptr) {
|
|
appendCodePoint((int32_t)(nextSrc - src), c, sink, edits);
|
|
}
|
|
|
|
/** Append the two-byte character (U+0080..U+07FF). */
|
|
static void appendTwoBytes(UChar32 c, ByteSink &sink);
|
|
|
|
static UBool appendUnchanged(const uint8_t *s, int32_t length,
|
|
ByteSink &sink, uint32_t options, Edits *edits,
|
|
UErrorCode &errorCode) {
|
|
if (U_FAILURE(errorCode)) { return FALSE; }
|
|
if (length > 0) { appendNonEmptyUnchanged(s, length, sink, options, edits); }
|
|
return TRUE;
|
|
}
|
|
|
|
static UBool appendUnchanged(const uint8_t *s, const uint8_t *limit,
|
|
ByteSink &sink, uint32_t options, Edits *edits,
|
|
UErrorCode &errorCode);
|
|
|
|
private:
|
|
static void appendNonEmptyUnchanged(const uint8_t *s, int32_t length,
|
|
ByteSink &sink, uint32_t options, Edits *edits);
|
|
};
|
|
|
|
class U_COMMON_API CharStringByteSink : public ByteSink {
|
|
public:
|
|
CharStringByteSink(CharString* dest);
|
|
~CharStringByteSink() override;
|
|
|
|
CharStringByteSink() = delete;
|
|
CharStringByteSink(const CharStringByteSink&) = delete;
|
|
CharStringByteSink& operator=(const CharStringByteSink&) = delete;
|
|
|
|
void Append(const char* bytes, int32_t n) override;
|
|
|
|
char* GetAppendBuffer(int32_t min_capacity,
|
|
int32_t desired_capacity_hint,
|
|
char* scratch,
|
|
int32_t scratch_capacity,
|
|
int32_t* result_capacity) override;
|
|
|
|
private:
|
|
CharString& dest_;
|
|
};
|
|
|
|
U_NAMESPACE_END
|