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// © 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 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
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