1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/i18n/uni2name.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,121 @@
1.4 +/*
1.5 +**********************************************************************
1.6 +* Copyright (C) 2001-2011, International Business Machines
1.7 +* Corporation and others. All Rights Reserved.
1.8 +**********************************************************************
1.9 +* Date Name Description
1.10 +* 06/06/01 aliu Creation.
1.11 +**********************************************************************
1.12 +*/
1.13 +
1.14 +#include "unicode/utypes.h"
1.15 +
1.16 +#if !UCONFIG_NO_TRANSLITERATION
1.17 +
1.18 +#include "unicode/unifilt.h"
1.19 +#include "unicode/uchar.h"
1.20 +#include "unicode/utf16.h"
1.21 +#include "uni2name.h"
1.22 +#include "cstring.h"
1.23 +#include "cmemory.h"
1.24 +#include "uprops.h"
1.25 +
1.26 +U_NAMESPACE_BEGIN
1.27 +
1.28 +UOBJECT_DEFINE_RTTI_IMPLEMENTATION(UnicodeNameTransliterator)
1.29 +
1.30 +static const UChar OPEN_DELIM[] = {92,78,123,0}; // "\N{"
1.31 +static const UChar CLOSE_DELIM = 125; // "}"
1.32 +#define OPEN_DELIM_LEN 3
1.33 +
1.34 +/**
1.35 + * Constructs a transliterator.
1.36 + */
1.37 +UnicodeNameTransliterator::UnicodeNameTransliterator(UnicodeFilter* adoptedFilter) :
1.38 + Transliterator(UNICODE_STRING("Any-Name", 8), adoptedFilter) {
1.39 +}
1.40 +
1.41 +/**
1.42 + * Destructor.
1.43 + */
1.44 +UnicodeNameTransliterator::~UnicodeNameTransliterator() {}
1.45 +
1.46 +/**
1.47 + * Copy constructor.
1.48 + */
1.49 +UnicodeNameTransliterator::UnicodeNameTransliterator(const UnicodeNameTransliterator& o) :
1.50 + Transliterator(o) {}
1.51 +
1.52 +/**
1.53 + * Assignment operator.
1.54 + */
1.55 +/*UnicodeNameTransliterator& UnicodeNameTransliterator::operator=(
1.56 + const UnicodeNameTransliterator& o) {
1.57 + Transliterator::operator=(o);
1.58 + return *this;
1.59 +}*/
1.60 +
1.61 +/**
1.62 + * Transliterator API.
1.63 + */
1.64 +Transliterator* UnicodeNameTransliterator::clone(void) const {
1.65 + return new UnicodeNameTransliterator(*this);
1.66 +}
1.67 +
1.68 +/**
1.69 + * Implements {@link Transliterator#handleTransliterate}.
1.70 + * Ignore isIncremental since we don't need the context, and
1.71 + * we work on codepoints.
1.72 + */
1.73 +void UnicodeNameTransliterator::handleTransliterate(Replaceable& text, UTransPosition& offsets,
1.74 + UBool /*isIncremental*/) const {
1.75 + // The failure mode, here and below, is to behave like Any-Null,
1.76 + // if either there is no name data (max len == 0) or there is no
1.77 + // memory (malloc() => NULL).
1.78 +
1.79 + int32_t maxLen = uprv_getMaxCharNameLength();
1.80 + if (maxLen == 0) {
1.81 + offsets.start = offsets.limit;
1.82 + return;
1.83 + }
1.84 +
1.85 + // Accomodate the longest possible name plus padding
1.86 + char* buf = (char*) uprv_malloc(maxLen);
1.87 + if (buf == NULL) {
1.88 + offsets.start = offsets.limit;
1.89 + return;
1.90 + }
1.91 +
1.92 + int32_t cursor = offsets.start;
1.93 + int32_t limit = offsets.limit;
1.94 +
1.95 + UnicodeString str(FALSE, OPEN_DELIM, OPEN_DELIM_LEN);
1.96 + UErrorCode status;
1.97 + int32_t len;
1.98 +
1.99 + while (cursor < limit) {
1.100 + UChar32 c = text.char32At(cursor);
1.101 + int32_t clen = U16_LENGTH(c);
1.102 + status = U_ZERO_ERROR;
1.103 + if ((len = u_charName(c, U_EXTENDED_CHAR_NAME, buf, maxLen, &status)) >0 && !U_FAILURE(status)) {
1.104 + str.truncate(OPEN_DELIM_LEN);
1.105 + str.append(UnicodeString(buf, len, US_INV)).append(CLOSE_DELIM);
1.106 + text.handleReplaceBetween(cursor, cursor+clen, str);
1.107 + len += OPEN_DELIM_LEN + 1; // adjust for delimiters
1.108 + cursor += len; // advance cursor and adjust for new text
1.109 + limit += len-clen; // change in length
1.110 + } else {
1.111 + cursor += clen;
1.112 + }
1.113 + }
1.114 +
1.115 + offsets.contextLimit += limit - offsets.limit;
1.116 + offsets.limit = limit;
1.117 + offsets.start = cursor;
1.118 +
1.119 + uprv_free(buf);
1.120 +}
1.121 +
1.122 +U_NAMESPACE_END
1.123 +
1.124 +#endif /* #if !UCONFIG_NO_TRANSLITERATION */
