sscanf.c revision c73f511526464f8e56c242df80552e9b0d94ae3d 
1/*
2******************************************************************************
3*
4*   Copyright (C) 2000-2004, International Business Machines
5*   Corporation and others.  All Rights Reserved.
6*
7******************************************************************************
8*
9* File sscanf.c
10*
11* Modification History:
12*
13*   Date        Name        Description
14*   02/08/00    george      Creation. Copied from uscanf.c
15******************************************************************************
16*/
17
18#include "unicode/utypes.h"
19
20#if !UCONFIG_NO_FORMATTING
21
22#include "unicode/putil.h"
23#include "unicode/ustdio.h"
24#include "unicode/ustring.h"
25#include "uscanf.h"
26#include "ufile.h"
27#include "ufmt_cmn.h"
28
29#include "cmemory.h"
30#include "cstring.h"
31
32
33U_CAPI int32_t U_EXPORT2
34u_sscanf(const UChar   *buffer,
35         const char    *patternSpecification,
36         ... )
37{
38    va_list ap;
39    int32_t converted;
40
41    va_start(ap, patternSpecification);
42    converted = u_vsscanf(buffer, patternSpecification, ap);
43    va_end(ap);
44
45    return converted;
46}
47
48U_CAPI int32_t U_EXPORT2
49u_sscanf_u(const UChar    *buffer,
50           const UChar    *patternSpecification,
51           ... )
52{
53    va_list ap;
54    int32_t converted;
55
56    va_start(ap, patternSpecification);
57    converted = u_vsscanf_u(buffer, patternSpecification, ap);
58    va_end(ap);
59
60    return converted;
61}
62
63U_CAPI int32_t  U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
64u_vsscanf(const UChar   *buffer,
65          const char    *patternSpecification,
66          va_list        ap)
67{
68    int32_t converted;
69    UChar *pattern;
70    UChar patBuffer[UFMT_DEFAULT_BUFFER_SIZE];
71    int32_t size = (int32_t)uprv_strlen(patternSpecification) + 1;
72
73    /* convert from the default codepage to Unicode */
74    if (size >= MAX_UCHAR_BUFFER_SIZE(patBuffer)) {
75        pattern = (UChar *)uprv_malloc(size * sizeof(UChar));
76        if(pattern == 0) {
77            return 0;
78        }
79    }
80    else {
81        pattern = patBuffer;
82    }
83    u_charsToUChars(patternSpecification, pattern, size);
84
85    /* do the work */
86    converted = u_vsscanf_u(buffer, pattern, ap);
87
88    /* clean up */
89    if (pattern != patBuffer) {
90        uprv_free(pattern);
91    }
92
93    return converted;
94}
95
96U_CAPI int32_t U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
97u_vsscanf_u(const UChar *buffer,
98            const UChar *patternSpecification,
99            va_list     ap)
100{
101    int32_t         converted;
102    UFILE           inStr;
103
104    inStr.fConverter = NULL;
105    inStr.fFile = NULL;
106    inStr.fOwnFile = FALSE;
107#if !UCONFIG_NO_TRANSLITERATION
108    inStr.fTranslit = NULL;
109#endif
110    inStr.fUCBuffer[0] = 0;
111    inStr.str.fBuffer = (UChar *)buffer;
112    inStr.str.fPos = (UChar *)buffer;
113    inStr.str.fLimit = buffer + u_strlen(buffer);
114
115    if(u_locbund_init(&inStr.str.fBundle, "en_US_POSIX") == 0) {
116        return 0;
117    }
118
119    converted = u_scanf_parse(&inStr, patternSpecification, ap);
120
121    u_locbund_close(&inStr.str.fBundle);
122
123    /* return # of items converted */
124    return converted;
125}
126
127#endif /* #if !UCONFIG_NO_FORMATTING */
128
129