253 lines
9.4 KiB
C
253 lines
9.4 KiB
C
/*
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**********************************************************************
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* Copyright (C) 1997-2001, International Business Machines
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* Corporation and others. All Rights Reserved.
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**********************************************************************
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*
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* File USCRIPT.H
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*
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* Modification History:
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*
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* Date Name Description
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* 07/06/2001 Ram Creation.
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******************************************************************************
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*/
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#ifndef USCRIPT_H
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#define USCRIPT_H
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#include "utypes.h"
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/**
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* Constants for Unicode script values from ScriptNames.txt .
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*
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* @draft ICU 2.0
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*/
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typedef enum UScriptCode {
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USCRIPT_INVALID_CODE = -1,
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USCRIPT_COMMON = 0 , /* Zyyy */
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USCRIPT_INHERITED = 1, /* Qaai */
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USCRIPT_ARABIC = 2, /* Arab */
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USCRIPT_ARMENIAN = 3, /* Armn */
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USCRIPT_BENGALI = 4, /* Beng */
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USCRIPT_BOPOMOFO = 5, /* Bopo */
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USCRIPT_CHEROKEE = 6, /* Cher */
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USCRIPT_COPTIC = 7, /* Qaac */
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USCRIPT_CYRILLIC = 8, /* Cyrl (Cyrs) */
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USCRIPT_DESERET = 9, /* Dsrt */
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USCRIPT_DEVANAGARI = 10, /* Deva */
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USCRIPT_ETHIOPIC = 11, /* Ethi */
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USCRIPT_GEORGIAN = 12, /* Geor (Geon, Geoa) */
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USCRIPT_GOTHIC = 13, /* Goth */
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USCRIPT_GREEK = 14, /* Grek */
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USCRIPT_GUJARATI = 15, /* Gujr */
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USCRIPT_GURMUKHI = 16, /* Guru */
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USCRIPT_HAN = 17, /* Hani */
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USCRIPT_HANGUL = 18, /* Hang */
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USCRIPT_HEBREW = 19, /* Hebr */
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USCRIPT_HIRAGANA = 20, /* Hira */
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USCRIPT_KANNADA = 21, /* Knda */
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USCRIPT_KATAKANA = 22, /* Kana */
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USCRIPT_KHMER = 23, /* Khmr */
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USCRIPT_LAO = 24, /* Laoo */
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USCRIPT_LATIN = 25, /* Latn (Latf, Latg) */
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USCRIPT_MALAYALAM = 26, /* Mlym */
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USCRIPT_MONGOLIAN = 27, /* Mong */
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USCRIPT_MYANMAR = 28, /* Mymr */
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USCRIPT_OGHAM = 29, /* Ogam */
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USCRIPT_OLD_ITALIC = 30, /* Ital */
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USCRIPT_ORIYA = 31, /* Orya */
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USCRIPT_RUNIC = 32, /* Runr */
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USCRIPT_SINHALA = 33, /* Sinh */
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USCRIPT_SYRIAC = 34, /* Syrc (Syrj, Syrn, Syre) */
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USCRIPT_TAMIL = 35, /* Taml */
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USCRIPT_TELUGU = 36, /* Telu */
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USCRIPT_THAANA = 37, /* Thaa */
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USCRIPT_THAI = 38, /* Thai */
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USCRIPT_TIBETAN = 39, /* Tibt */
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USCRIPT_UCAS = 40, /* Cans */
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USCRIPT_YI = 41, /* Yiii */
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USCRIPT_TAGALOG = 42, /* Tglg */
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USCRIPT_HANUNOO = 43, /* Hano */
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USCRIPT_BUHID = 44, /* Buhd */
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USCRIPT_TAGBANWA = 45, /* Tagb */
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USCRIPT_CODE_LIMIT
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} UScriptCode;
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/**
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* Gets script codes associated with the given locale or ISO 15924 abbreviation or name.
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* Fills in USCRIPT_MALAYALAM given "Malayam" OR "Mlym".
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* Fills in USCRIPT_LATIN given "en" OR "en_US"
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* If required capacity is greater than capacity of the destination buffer then the error code
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* is set to U_BUFFER_OVERFLOW_ERROR and the required capacity is returned
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* @param nameOrAbbrOrLocale name of the script or ISO 15924 code or locale
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* @param fillIn the UScriptCode buffer to fill in the script code
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* @param capacity the capacity (size) fo UScriptCode buffer passed in.
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* @param err the error status code.
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* @return The number of script codes filled in the buffer passed in
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* @draft ICU 2.0
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*/
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U_CAPI int32_t U_EXPORT2
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uscript_getCode(const char* nameOrAbbrOrLocale,UScriptCode* fillIn,int32_t capacity,UErrorCode *err);
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/**
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* Gets a script name associated with the given script code.
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* Returns "Malayam" given USCRIPT_MALAYALAM
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* @param scriptCode UScriptCode enum
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* @return script name as a string in full as given in TR#24
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* @draft ICU 2.0
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*/
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U_CAPI const char* U_EXPORT2
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uscript_getName(UScriptCode scriptCode);
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/**
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* Gets a script name associated with the given script code.
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* Returns "Mlym" given USCRIPT_MALAYALAM
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* @param scriptCode UScriptCode enum
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* @return script abbreviated name as a string as given in TR#24
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* @draft ICU 2.0
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*/
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U_CAPI const char* U_EXPORT2
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uscript_getShortName(UScriptCode scriptCode);
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/**
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* Gets the script code associated with the given codepoint.
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* Returns USCRIPT_MALAYALAM given 0x0D02
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* @param codepoint UChar32 codepoint
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* @param err the error status code.
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* @return The UScriptCode
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* @draft ICU 2.0
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*/
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U_CAPI UScriptCode U_EXPORT2
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uscript_getScript(UChar32 codepoint, UErrorCode *err);
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/**
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* <code>UScriptRun</code> is used to find runs of characters in
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* the same script. It implements a simple iterator over an array
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* of characters. The iterator will resolve script-neutral characters
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* like punctuation into the script of the surrounding characters.
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*
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* The iterator will try to match paired punctuation. If it sees an
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* opening punctuation character, it will remember the script that
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* was assigned to that character, and assign the same script to the
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* matching closing punctuation.
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*
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* Scripts are chosen based on the <code>UScriptCode</code> enumeration.
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* No attempt is made to combine related scripts into a single run. In
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* particular, Hiragana, Katakana, and Han characters will appear in seperate
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* runs.
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* Here is an example of how to iterate over script runs:
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* <pre>
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* \code
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* void printScriptRuns(const UChar *text, int32_t length)
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* {
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* UErrorCode error = U_ZERO_ERROR;
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* UScriptRun *scriptRun = uscript_openRun(text, testLength, &error);
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* int32_t start = 0, limit = 0;
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* UScriptCode code = USCRIPT_INVALID_CODE;
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*
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* while (uscript_nextRun(&start, &limit, &code)) {
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* printf("Script '%s' from %d to %d.\n", uscript_getName(code), start, limit);
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* }
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*
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* uscript_closeRun(scriptRun);
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* }
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* </pre>
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*
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* @draft ICU 2.2
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*/
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struct UScriptRun;
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typedef struct UScriptRun UScriptRun;
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/**
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* Create a <code>UScriptRun</code> object for iterating over the given text. This object must
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* be freed using <code>uscript_closeRun()</code>. Note that this object does not copy the source text,
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* only the pointer to it. You must make sure that the pointer remains valid until you call
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* <code>uscript_closeRun()</code> or <code>uscript_setRunText()</code>.
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*
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* @param src is the address of the array of characters over which to iterate.
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* if <code>src == NULL</code> and <code>length == 0</code>,
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* an empty <code>UScriptRun</code> object will be returned.
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*
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* @param length is the number of characters over which to iterate.
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*
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* @param pErrorCode is a pointer to a valid <code>UErrorCode</code> value. If this value
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* indicates a failure on entry, the function will immediately return.
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* On exit the value will indicate the success of the operation.
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*
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* @return the address of <code>UScriptRun</code> object which will iterate over the text,
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* or <code>NULL</code> if the operation failed.
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*
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* @draft ICU 2.2
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*/
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U_CAPI UScriptRun * U_EXPORT2
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uscript_openRun(const UChar *src, int32_t length, UErrorCode *pErrorCode);
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/**
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* Frees the given <code>UScriptRun</code> object and any storage associated with it.
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* On return, scriptRun no longer points to a valid <code>UScriptRun</code> object.
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*
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* @param scriptRun is the <code>UScriptRun</code> object which will be freed.
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*
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* @draft ICU 2.2
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*/
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U_CAPI void U_EXPORT2
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uscript_closeRun(UScriptRun *scriptRun);
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/**
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* Reset the <code>UScriptRun</code> object so that it will start iterating from
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* the beginning.
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*
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* @param scriptRun is the address of the <code>UScriptRun</code> object to be reset.
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*
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* @draft ICU 2.2
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*/
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U_CAPI void U_EXPORT2
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uscript_resetRun(UScriptRun *scriptRun);
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/**
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* Change the text over which the given <code>UScriptRun</code> object iterates.
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*
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* @param scriptRun is the <code>UScriptRun</code> object which will be changed.
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*
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* @param src is the address of the new array of characters over which to iterate.
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* If <code>src == NULL</code> and <code>length == 0</code>,
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* the <code>UScriptRun</code> object will become empty.
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*
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* @param length is the new number of characters over which to iterate
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*
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* @param pErrorCode is a pointer to a valid <code>UErrorCode</code> value. If this value
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* indicates a failure on entry, the function will immediately return.
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* On exit the value will indicate the success of the operation.
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*
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* @draft ICU 2.2
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*/
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U_CAPI void U_EXPORT2
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uscript_setRunText(UScriptRun *scriptRun, const UChar *src, int32_t length, UErrorCode *pErrorCode);
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/**
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* Advance the <code>UScriptRun</code> object to the next script run, return the start and limit
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* offsets, and the script of the run.
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*
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* @param scriptRun is the address of the <code>UScriptRun</code> object.
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*
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* @param pRunStart is a pointer to the variable to receive the starting offset of the next run.
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* This pointer can be <code>NULL</code> if the value is not needed.
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*
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* @param pRunLimit is a pointer to the variable to receive the limit offset of the next run.
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* This pointer can be <code>NULL</code> if the value is not needed.
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*
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* @param pRunScript is a pointer to the variable to receive the UScriptCode for the
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* script of the current run. This pointer can be <code>NULL</code> if the value is not needed.
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*
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* @return true if there was another script run.
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*
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* @draft ICU 2.2
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*/
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U_CAPI UBool U_EXPORT2
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uscript_nextRun(UScriptRun *scriptRun, int32_t *pRunStart, int32_t *pRunLimit, UScriptCode *pRunScript);
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#endif
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