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      1 /*
      2 ******************************************************************************
      3 *
      4 *   Copyright (C) 2000-2014, 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 && !UCONFIG_NO_CONVERSION
     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 
     33 U_CAPI int32_t U_EXPORT2
     34 u_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 
     48 U_CAPI int32_t U_EXPORT2
     49 u_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 
     63 U_CAPI int32_t  U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
     64 u_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 
     96 U_CAPI int32_t U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
     97 u_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