intl/icu/source/i18n/uni2name.cpp@b8a032363ba2 (annotated)
intl/icu/source/i18n/uni2name.cpp
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* |
| michael@0 | 2 | ********************************************************************** |
| michael@0 | 3 | * Copyright (C) 2001-2011, International Business Machines |
| michael@0 | 4 | * Corporation and others. All Rights Reserved. |
| michael@0 | 5 | ********************************************************************** |
| michael@0 | 6 | * Date Name Description |
| michael@0 | 7 | * 06/06/01 aliu Creation. |
| michael@0 | 8 | ********************************************************************** |
| michael@0 | 9 | */ |
| michael@0 | 10 | |
| michael@0 | 11 | #include "unicode/utypes.h" |
| michael@0 | 12 | |
| michael@0 | 13 | #if !UCONFIG_NO_TRANSLITERATION |
| michael@0 | 14 | |
| michael@0 | 15 | #include "unicode/unifilt.h" |
| michael@0 | 16 | #include "unicode/uchar.h" |
| michael@0 | 17 | #include "unicode/utf16.h" |
| michael@0 | 18 | #include "uni2name.h" |
| michael@0 | 19 | #include "cstring.h" |
| michael@0 | 20 | #include "cmemory.h" |
| michael@0 | 21 | #include "uprops.h" |
| michael@0 | 22 | |
| michael@0 | 23 | U_NAMESPACE_BEGIN |
| michael@0 | 24 | |
| michael@0 | 25 | UOBJECT_DEFINE_RTTI_IMPLEMENTATION(UnicodeNameTransliterator) |
| michael@0 | 26 | |
| michael@0 | 27 | static const UChar OPEN_DELIM[] = {92,78,123,0}; // "\N{" |
| michael@0 | 28 | static const UChar CLOSE_DELIM = 125; // "}" |
| michael@0 | 29 | #define OPEN_DELIM_LEN 3 |
| michael@0 | 30 | |
| michael@0 | 31 | /** |
| michael@0 | 32 | * Constructs a transliterator. |
| michael@0 | 33 | */ |
| michael@0 | 34 | UnicodeNameTransliterator::UnicodeNameTransliterator(UnicodeFilter* adoptedFilter) : |
| michael@0 | 35 | Transliterator(UNICODE_STRING("Any-Name", 8), adoptedFilter) { |
| michael@0 | 36 | } |
| michael@0 | 37 | |
| michael@0 | 38 | /** |
| michael@0 | 39 | * Destructor. |
| michael@0 | 40 | */ |
| michael@0 | 41 | UnicodeNameTransliterator::~UnicodeNameTransliterator() {} |
| michael@0 | 42 | |
| michael@0 | 43 | /** |
| michael@0 | 44 | * Copy constructor. |
| michael@0 | 45 | */ |
| michael@0 | 46 | UnicodeNameTransliterator::UnicodeNameTransliterator(const UnicodeNameTransliterator& o) : |
| michael@0 | 47 | Transliterator(o) {} |
| michael@0 | 48 | |
| michael@0 | 49 | /** |
| michael@0 | 50 | * Assignment operator. |
| michael@0 | 51 | */ |
| michael@0 | 52 | /*UnicodeNameTransliterator& UnicodeNameTransliterator::operator=( |
| michael@0 | 53 | const UnicodeNameTransliterator& o) { |
| michael@0 | 54 | Transliterator::operator=(o); |
| michael@0 | 55 | return *this; |
| michael@0 | 56 | }*/ |
| michael@0 | 57 | |
| michael@0 | 58 | /** |
| michael@0 | 59 | * Transliterator API. |
| michael@0 | 60 | */ |
| michael@0 | 61 | Transliterator* UnicodeNameTransliterator::clone(void) const { |
| michael@0 | 62 | return new UnicodeNameTransliterator(*this); |
| michael@0 | 63 | } |
| michael@0 | 64 | |
| michael@0 | 65 | /** |
| michael@0 | 66 | * Implements {@link Transliterator#handleTransliterate}. |
| michael@0 | 67 | * Ignore isIncremental since we don't need the context, and |
| michael@0 | 68 | * we work on codepoints. |
| michael@0 | 69 | */ |
| michael@0 | 70 | void UnicodeNameTransliterator::handleTransliterate(Replaceable& text, UTransPosition& offsets, |
| michael@0 | 71 | UBool /*isIncremental*/) const { |
| michael@0 | 72 | // The failure mode, here and below, is to behave like Any-Null, |
| michael@0 | 73 | // if either there is no name data (max len == 0) or there is no |
| michael@0 | 74 | // memory (malloc() => NULL). |
| michael@0 | 75 | |
| michael@0 | 76 | int32_t maxLen = uprv_getMaxCharNameLength(); |
| michael@0 | 77 | if (maxLen == 0) { |
| michael@0 | 78 | offsets.start = offsets.limit; |
| michael@0 | 79 | return; |
| michael@0 | 80 | } |
| michael@0 | 81 | |
| michael@0 | 82 | // Accomodate the longest possible name plus padding |
| michael@0 | 83 | char* buf = (char*) uprv_malloc(maxLen); |
| michael@0 | 84 | if (buf == NULL) { |
| michael@0 | 85 | offsets.start = offsets.limit; |
| michael@0 | 86 | return; |
| michael@0 | 87 | } |
| michael@0 | 88 | |
| michael@0 | 89 | int32_t cursor = offsets.start; |
| michael@0 | 90 | int32_t limit = offsets.limit; |
| michael@0 | 91 | |
| michael@0 | 92 | UnicodeString str(FALSE, OPEN_DELIM, OPEN_DELIM_LEN); |
| michael@0 | 93 | UErrorCode status; |
| michael@0 | 94 | int32_t len; |
| michael@0 | 95 | |
| michael@0 | 96 | while (cursor < limit) { |
| michael@0 | 97 | UChar32 c = text.char32At(cursor); |
| michael@0 | 98 | int32_t clen = U16_LENGTH(c); |
| michael@0 | 99 | status = U_ZERO_ERROR; |
| michael@0 | 100 | if ((len = u_charName(c, U_EXTENDED_CHAR_NAME, buf, maxLen, &status)) >0 && !U_FAILURE(status)) { |
| michael@0 | 101 | str.truncate(OPEN_DELIM_LEN); |
| michael@0 | 102 | str.append(UnicodeString(buf, len, US_INV)).append(CLOSE_DELIM); |
| michael@0 | 103 | text.handleReplaceBetween(cursor, cursor+clen, str); |
| michael@0 | 104 | len += OPEN_DELIM_LEN + 1; // adjust for delimiters |
| michael@0 | 105 | cursor += len; // advance cursor and adjust for new text |
| michael@0 | 106 | limit += len-clen; // change in length |
| michael@0 | 107 | } else { |
| michael@0 | 108 | cursor += clen; |
| michael@0 | 109 | } |
| michael@0 | 110 | } |
| michael@0 | 111 | |
| michael@0 | 112 | offsets.contextLimit += limit - offsets.limit; |
| michael@0 | 113 | offsets.limit = limit; |
| michael@0 | 114 | offsets.start = cursor; |
| michael@0 | 115 | |
| michael@0 | 116 | uprv_free(buf); |
| michael@0 | 117 | } |
| michael@0 | 118 | |
| michael@0 | 119 | U_NAMESPACE_END |
| michael@0 | 120 | |
| michael@0 | 121 | #endif /* #if !UCONFIG_NO_TRANSLITERATION */ |
