icuSources/common/uscript.c

   1 /*
   2 **********************************************************************
   3 *   Copyright (C) 1997-2004, 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 U_CAPI int32_t  U_EXPORT2
  27 uscript_getCode(const char* nameOrAbbrOrLocale,
  28                 UScriptCode* fillIn,
  29                 int32_t capacity,
  30                 UErrorCode* err){
  31
  32     UScriptCode code = USCRIPT_INVALID_CODE;
  33     int32_t numFilled=0;
  34     int32_t len=0;
  35     /* check arguments */
  36     if(err==NULL ||U_FAILURE(*err)){
  37         return numFilled;
  38     }
  39     if(nameOrAbbrOrLocale==NULL || fillIn == NULL || capacity<0){
  40         *err = U_ILLEGAL_ARGUMENT_ERROR;
  41         return numFilled;
  42     }
  43
  44     /* try long and abbreviated script names first */
  45     code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, nameOrAbbrOrLocale);
  46
  47     /* we still haven't found it try locale */
  48     if(code==(UScriptCode)UCHAR_INVALID_CODE){
  49         /* Do not propagate error codes from just not finding a locale bundle. */
  50         UErrorCode localErrorCode = U_ZERO_ERROR;
  51         UResourceBundle* resB = ures_open(NULL,nameOrAbbrOrLocale,&localErrorCode);
  52         if(U_SUCCESS(localErrorCode)&& localErrorCode != U_USING_DEFAULT_WARNING){
  53             UResourceBundle* resD = ures_getByKey(resB,kLocaleScript,NULL,&localErrorCode);
  54             if(U_SUCCESS(localErrorCode) ){
  55                 len =0;
  56                 while(ures_hasNext(resD)){
  57                     const UChar* name = ures_getNextString(resD,&len,NULL,&localErrorCode);
  58                     if(U_SUCCESS(localErrorCode)){
  59                         char cName[50] = {'\0'};
  60                         u_UCharsToChars(name,cName,len);
  61                         code = (UScriptCode) u_getPropertyValueEnum(UCHAR_SCRIPT, cName);
  62                         /* got the script code now fill in the buffer */
  63                         if(numFilled<=capacity){
  64                             *(fillIn)++=code;
  65                             numFilled++;
  66                         }else{
  67                             ures_close(resD);
  68                             ures_close(resB);
  69                             *err=U_BUFFER_OVERFLOW_ERROR;
  70                             return len;
  71                         }
  72                     }
  73                 }
  74             }
  75             ures_close(resD);
  76
  77         }
  78         ures_close(resB);
  79     }else{
  80         /* we found it */
  81         if(numFilled<=capacity){
  82             *(fillIn)++=code;
  83             numFilled++;
  84         }else{
  85             *err=U_BUFFER_OVERFLOW_ERROR;
  86             return len;
  87         }
  88     }
  89     return numFilled;
  90 }
  91
  92 U_CAPI const char*  U_EXPORT2
  93 uscript_getName(UScriptCode scriptCode){
  94     return u_getPropertyValueName(UCHAR_SCRIPT, scriptCode,
  95                                   U_LONG_PROPERTY_NAME);
  96 }
  97
  98 U_CAPI const char*  U_EXPORT2
  99 uscript_getShortName(UScriptCode scriptCode){
 100     return u_getPropertyValueName(UCHAR_SCRIPT, scriptCode,
 101                                   U_SHORT_PROPERTY_NAME);
 102 }
 103