1// Copyright (C) 2016 and later: Unicode, Inc. and others.
2// License & terms of use: http://www.unicode.org/copyright.html
3/*
4*******************************************************************************
5*
6*   Copyright (C) 1997-2006, International Business Machines
7*   Corporation and others.  All Rights Reserved.
8*
9*******************************************************************************
10*   file name:  ures_cnv.c
11*   encoding:   US-ASCII
12*   tab size:   8 (not used)
13*   indentation:4
14*
15*   created on: 2004aug25
16*   created by: Markus W. Scherer
17*
18*   Character conversion functions moved here from uresbund.c
19*/
20
21#include "unicode/utypes.h"
22#include "unicode/putil.h"
23#include "unicode/ustring.h"
24#include "unicode/ucnv.h"
25#include "unicode/ures.h"
26#include "uinvchar.h"
27#include "ustr_cnv.h"
28
29U_CAPI UResourceBundle * U_EXPORT2
30ures_openU(const UChar *myPath,
31           const char *localeID,
32           UErrorCode *status)
33{
34    char pathBuffer[1024];
35    int32_t length;
36    char *path = pathBuffer;
37
38    if(status==NULL || U_FAILURE(*status)) {
39        return NULL;
40    }
41    if(myPath==NULL) {
42        path = NULL;
43    }
44    else {
45        length=u_strlen(myPath);
46        if(length>=sizeof(pathBuffer)) {
47            *status=U_ILLEGAL_ARGUMENT_ERROR;
48            return NULL;
49        } else if(uprv_isInvariantUString(myPath, length)) {
50            /*
51             * the invariant converter is sufficient for package and tree names
52             * and is more efficient
53             */
54            u_UCharsToChars(myPath, path, length+1); /* length+1 to include the NUL */
55        } else {
56#if !UCONFIG_NO_CONVERSION
57            /* use the default converter to support variant-character paths */
58            UConverter *cnv=u_getDefaultConverter(status);
59            length=ucnv_fromUChars(cnv, path, (int32_t)sizeof(pathBuffer), myPath, length, status);
60            u_releaseDefaultConverter(cnv);
61            if(U_FAILURE(*status)) {
62                return NULL;
63            }
64            if(length>=sizeof(pathBuffer)) {
65                /* not NUL-terminated - path too long */
66                *status=U_ILLEGAL_ARGUMENT_ERROR;
67                return NULL;
68            }
69#else
70            /* the default converter is not available */
71            *status=U_UNSUPPORTED_ERROR;
72            return NULL;
73#endif
74        }
75    }
76
77    return ures_open(path, localeID, status);
78}
79