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