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      1 /*
      2 *******************************************************************************
      3 *
      4 *   Copyright (C) 1997-2006, International Business Machines
      5 *   Corporation and others.  All Rights Reserved.
      6 *
      7 *******************************************************************************
      8 *   file name:  ures_cnv.c
      9 *   encoding:   US-ASCII
     10 *   tab size:   8 (not used)
     11 *   indentation:4
     12 *
     13 *   created on: 2004aug25
     14 *   created by: Markus W. Scherer
     15 *
     16 *   Character conversion functions moved here from uresbund.c
     17 */
     18 
     19 #include "unicode/utypes.h"
     20 #include "unicode/putil.h"
     21 #include "unicode/ustring.h"
     22 #include "unicode/ucnv.h"
     23 #include "unicode/ures.h"
     24 #include "uinvchar.h"
     25 #include "ustr_cnv.h"
     26 
     27 U_CAPI UResourceBundle * U_EXPORT2
     28 ures_openU(const UChar *myPath,
     29            const char *localeID,
     30            UErrorCode *status)
     31 {
     32     char pathBuffer[1024];
     33     int32_t length;
     34     char *path = pathBuffer;
     35 
     36     if(status==NULL || U_FAILURE(*status)) {
     37         return NULL;
     38     }
     39     if(myPath==NULL) {
     40         path = NULL;
     41     }
     42     else {
     43         length=u_strlen(myPath);
     44         if(length>=sizeof(pathBuffer)) {
     45             *status=U_ILLEGAL_ARGUMENT_ERROR;
     46             return NULL;
     47         } else if(uprv_isInvariantUString(myPath, length)) {
     48             /*
     49              * the invariant converter is sufficient for package and tree names
     50              * and is more efficient
     51              */
     52             u_UCharsToChars(myPath, path, length+1); /* length+1 to include the NUL */
     53         } else {
     54 #if !UCONFIG_NO_CONVERSION
     55             /* use the default converter to support variant-character paths */
     56             UConverter *cnv=u_getDefaultConverter(status);
     57             length=ucnv_fromUChars(cnv, path, (int32_t)sizeof(pathBuffer), myPath, length, status);
     58             u_releaseDefaultConverter(cnv);
     59             if(U_FAILURE(*status)) {
     60                 return NULL;
     61             }
     62             if(length>=sizeof(pathBuffer)) {
     63                 /* not NUL-terminated - path too long */
     64                 *status=U_ILLEGAL_ARGUMENT_ERROR;
     65                 return NULL;
     66             }
     67 #else
     68             /* the default converter is not available */
     69             *status=U_UNSUPPORTED_ERROR;
     70             return NULL;
     71 #endif
     72         }
     73     }
     74 
     75     return ures_open(path, localeID, status);
     76 }
     77