icuSources/common/uscript.c

   1 /*
   2 **********************************************************************
   3 *   Copyright (C) 1997-2006, International Business Machines
   4 *   Corporation and others.  All Rights Reserved.
   5 **********************************************************************
   6 *
   7 * File USCRIPT.C
   8 *
   9 * Modification History:
  10 *
  11 *   Date        Name        Description
  12 *   07/06/2001    Ram         Creation.
  13 ******************************************************************************
  14 */
  15
  16 #include "unicode/uscript.h"
  17 #include "unicode/ures.h"
  18 #include "unicode/uchar.h"
  19 #include "unicode/putil.h"
  20 #include "uprops.h"
  21 #include "cmemory.h"
  22 #include "cstring.h"
  23
  24 static const char kLocaleScript[] = "LocaleScript";
  25 static const char kHyphen = '-';
  26 static const char kUnderscore = '_';
  27
  28 /* TODO: this is a bad API should be deprecated */
  29 U_CAPI int32_t  U_EXPORT2
  30 uscript_getCode(const char* nameOrAbbrOrLocale,
  31                 UScriptCode* fillIn,
  32                 int32_t capacity,
  33                 UErrorCode* err){
  34
  35     UScriptCode code = USCRIPT_INVALID_CODE;
  36     int32_t numFilled=0;
  37     int32_t len=0;
  38     /* check arguments */
  39     if(err==NULL ||U_FAILURE(*err)){
  40         return numFilled;
  41     }
  42     if(nameOrAbbrOrLocale==NULL || fillIn == NULL || capacity<0){
  43         *err = U_ILLEGAL_ARGUMENT_ERROR;
  44         return numFilled;
  45     }
  46
  47     if(uprv_strchr(nameOrAbbrOrLocale, kHyphen)==NULL && uprv_strchr(nameOrAbbrOrLocale, kUnderscore)==NULL ){
  48         /* try long and abbreviated script names first */
  49         code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, nameOrAbbrOrLocale);
  50
  51     }
  52     if(code==(UScriptCode)UCHAR_INVALID_CODE){
  53        /* Do not propagate error codes from just not finding a locale bundle. */
  54         UErrorCode localErrorCode = U_ZERO_ERROR;
  55         UResourceBundle* resB = ures_open(NULL,nameOrAbbrOrLocale,&localErrorCode);
  56         if(U_SUCCESS(localErrorCode)&& localErrorCode != U_USING_DEFAULT_WARNING){
  57             UResourceBundle* resD = ures_getByKey(resB,kLocaleScript,NULL,&localErrorCode);
  58             if(U_SUCCESS(localErrorCode) ){
  59                 len =0;
  60                 while(ures_hasNext(resD)){
  61                     const UChar* name = ures_getNextString(resD,&len,NULL,&localErrorCode);
  62                     if(U_SUCCESS(localErrorCode)){
  63                         char cName[50] = {'\0'};
  64                         u_UCharsToChars(name,cName,len);
  65                         code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, cName);
  66                         /* got the script code now fill in the buffer */
  67                         if(numFilled<=capacity){
  68                             *(fillIn)++=code;
  69                             numFilled++;
  70                         }else{
  71                             ures_close(resD);
  72                             ures_close(resB);
  73                             *err=U_BUFFER_OVERFLOW_ERROR;
  74                             return len;
  75                         }
  76                     }
  77                 }
  78             }
  79             ures_close(resD);
  80         }
  81         ures_close(resB);
  82         code = USCRIPT_INVALID_CODE;
  83     }
  84     if(code==(UScriptCode)UCHAR_INVALID_CODE){
  85        /* still not found .. try long and abbreviated script names again */
  86         code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, nameOrAbbrOrLocale);
  87     }
  88     if(code!=(UScriptCode)UCHAR_INVALID_CODE){
  89         /* we found it */
  90         if(numFilled<=capacity){
  91             *(fillIn)++=code;
  92             numFilled++;
  93         }else{
  94             *err=U_BUFFER_OVERFLOW_ERROR;
  95             return len;
  96         }
  97     }
  98     return numFilled;
  99 }
 100
 101 U_CAPI const char*  U_EXPORT2
 102 uscript_getName(UScriptCode scriptCode){
 103     return u_getPropertyValueName(UCHAR_SCRIPT, scriptCode,
 104                                   U_LONG_PROPERTY_NAME);
 105 }
 106
 107 U_CAPI const char*  U_EXPORT2
 108 uscript_getShortName(UScriptCode scriptCode){
 109     return u_getPropertyValueName(UCHAR_SCRIPT, scriptCode,
 110                                   U_SHORT_PROPERTY_NAME);
 111 }
 112