icuSources/common/uscript.c

   1 /*
   2 **********************************************************************
   3 *   Copyright (C) 1997-2011, 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
  26 /* TODO: this is a bad API should be deprecated */
  27 U_CAPI int32_t  U_EXPORT2
  28 uscript_getCode(const char* nameOrAbbrOrLocale,
  29                 UScriptCode* fillIn,
  30                 int32_t capacity,
  31                 UErrorCode* err){
  32
  33     UScriptCode code = USCRIPT_INVALID_CODE;
  34     int32_t numFilled=0;
  35     int32_t len=0;
  36     /* check arguments */
  37     if(err==NULL ||U_FAILURE(*err)){
  38         return numFilled;
  39     }
  40     if(nameOrAbbrOrLocale==NULL || fillIn == NULL || capacity<0){
  41         *err = U_ILLEGAL_ARGUMENT_ERROR;
  42         return numFilled;
  43     }
  44
  45     if(uprv_strchr(nameOrAbbrOrLocale, '-')==NULL && uprv_strchr(nameOrAbbrOrLocale, '_')==NULL ){
  46         /* try long and abbreviated script names first */
  47         code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, nameOrAbbrOrLocale);
  48
  49     }
  50     if(code==(UScriptCode)UCHAR_INVALID_CODE){
  51        /* Do not propagate error codes from just not finding a locale bundle. */
  52         UErrorCode localErrorCode = U_ZERO_ERROR;
  53         UResourceBundle* resB = ures_open(NULL,nameOrAbbrOrLocale,&localErrorCode);
  54         if(U_SUCCESS(localErrorCode)&& localErrorCode != U_USING_DEFAULT_WARNING){
  55             UResourceBundle* resD = ures_getByKey(resB,kLocaleScript,NULL,&localErrorCode);
  56             if(U_SUCCESS(localErrorCode) ){
  57                 len =0;
  58                 while(ures_hasNext(resD)){
  59                     const UChar* name = ures_getNextString(resD,&len,NULL,&localErrorCode);
  60                     if(U_SUCCESS(localErrorCode)){
  61                         char cName[50] = {'\0'};
  62                         u_UCharsToChars(name,cName,len);
  63                         code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, cName);
  64                         /* got the script code now fill in the buffer */
  65                         if(numFilled<capacity){
  66                             *(fillIn)++=code;
  67                             numFilled++;
  68                         }else{
  69                             ures_close(resD);
  70                             ures_close(resB);
  71                             *err=U_BUFFER_OVERFLOW_ERROR;
  72                             return len;
  73                         }
  74                     }
  75                 }
  76             }
  77             ures_close(resD);
  78         }
  79         ures_close(resB);
  80         code = USCRIPT_INVALID_CODE;
  81     }
  82     if(code==(UScriptCode)UCHAR_INVALID_CODE){
  83        /* still not found .. try long and abbreviated script names again */
  84         code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, nameOrAbbrOrLocale);
  85     }
  86     if(code!=(UScriptCode)UCHAR_INVALID_CODE){
  87         /* we found it */
  88         if(numFilled<capacity){
  89             *(fillIn)++=code;
  90             numFilled++;
  91         }else{
  92             *err=U_BUFFER_OVERFLOW_ERROR;
  93             return len;
  94         }
  95     }
  96     return numFilled;
  97 }