icuSources/io/uscanf.cpp

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 ******************************************************************************
   5 *
   6 *   Copyright (C) 1998-2014, International Business Machines
   7 *   Corporation and others.  All Rights Reserved.
   8 *
   9 ******************************************************************************
  10 *
  11 * File uscanf.c
  12 *
  13 * Modification History:
  14 *
  15 *   Date        Name        Description
  16 *   12/02/98    stephen        Creation.
  17 *   03/13/99    stephen     Modified for new C API.
  18 ******************************************************************************
  19 */
  20
  21 #include "unicode/utypes.h"
  22
  23 #if !UCONFIG_NO_FORMATTING && !UCONFIG_NO_CONVERSION
  24
  25 #include "unicode/putil.h"
  26 #include "unicode/ustdio.h"
  27 #include "unicode/ustring.h"
  28 #include "uscanf.h"
  29 #include "ufile.h"
  30 #include "ufmt_cmn.h"
  31
  32 #include "cmemory.h"
  33 #include "cstring.h"
  34
  35
  36 U_CAPI int32_t U_EXPORT2
  37 u_fscanf(UFILE        *f,
  38          const char    *patternSpecification,
  39          ... )
  40 {
  41     va_list ap;
  42     int32_t converted;
  43
  44     va_start(ap, patternSpecification);
  45     converted = u_vfscanf(f, patternSpecification, ap);
  46     va_end(ap);
  47
  48     return converted;
  49 }
  50
  51 U_CAPI int32_t U_EXPORT2
  52 u_fscanf_u(UFILE        *f,
  53            const UChar    *patternSpecification,
  54            ... )
  55 {
  56     va_list ap;
  57     int32_t converted;
  58
  59     va_start(ap, patternSpecification);
  60     converted = u_vfscanf_u(f, patternSpecification, ap);
  61     va_end(ap);
  62
  63     return converted;
  64 }
  65
  66 U_CAPI int32_t  U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
  67 u_vfscanf(UFILE        *f,
  68           const char    *patternSpecification,
  69           va_list        ap)
  70 {
  71     int32_t converted;
  72     UChar *pattern;
  73     UChar patBuffer[UFMT_DEFAULT_BUFFER_SIZE];
  74     int32_t size = (int32_t)uprv_strlen(patternSpecification) + 1;
  75
  76     /* convert from the default codepage to Unicode */
  77     if (size >= MAX_UCHAR_BUFFER_SIZE(patBuffer)) {
  78         pattern = (UChar *)uprv_malloc(size * sizeof(UChar));
  79         if(pattern == 0) {
  80             return 0;
  81         }
  82     }
  83     else {
  84         pattern = patBuffer;
  85     }
  86     u_charsToUChars(patternSpecification, pattern, size);
  87
  88     /* do the work */
  89     converted = u_vfscanf_u(f, pattern, ap);
  90
  91     /* clean up */
  92     if (pattern != patBuffer) {
  93         uprv_free(pattern);
  94     }
  95
  96     return converted;
  97 }
  98
  99 U_CAPI int32_t  U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
 100 u_vfscanf_u(UFILE       *f,
 101             const UChar *patternSpecification,
 102             va_list     ap)
 103 {
 104     return u_scanf_parse(f, patternSpecification, ap);
 105 }
 106
 107 #endif /* #if !UCONFIG_NO_FORMATTING */
 108