icuSources/io/uscanf.c

   1 /*
   2 ******************************************************************************
   3 *
   4 *   Copyright (C) 1998-2004, International Business Machines
   5 *   Corporation and others.  All Rights Reserved.
   6 *
   7 ******************************************************************************
   8 *
   9 * File uscanf.c
  10 *
  11 * Modification History:
  12 *
  13 *   Date        Name        Description
  14 *   12/02/98    stephen        Creation.
  15 *   03/13/99    stephen     Modified for new C API.
  16 ******************************************************************************
  17 */
  18
  19 #include "unicode/utypes.h"
  20
  21 #if !UCONFIG_NO_FORMATTING
  22
  23 #include "unicode/putil.h"
  24 #include "unicode/ustdio.h"
  25 #include "unicode/ustring.h"
  26 #include "uscanf.h"
  27 #include "ufile.h"
  28 #include "ufmt_cmn.h"
  29
  30 #include "cmemory.h"
  31 #include "cstring.h"
  32
  33
  34 U_CAPI int32_t U_EXPORT2
  35 u_fscanf(UFILE        *f,
  36          const char    *patternSpecification,
  37          ... )
  38 {
  39     va_list ap;
  40     int32_t converted;
  41
  42     va_start(ap, patternSpecification);
  43     converted = u_vfscanf(f, patternSpecification, ap);
  44     va_end(ap);
  45
  46     return converted;
  47 }
  48
  49 U_CAPI int32_t U_EXPORT2
  50 u_fscanf_u(UFILE        *f,
  51            const UChar    *patternSpecification,
  52            ... )
  53 {
  54     va_list ap;
  55     int32_t converted;
  56
  57     va_start(ap, patternSpecification);
  58     converted = u_vfscanf_u(f, patternSpecification, ap);
  59     va_end(ap);
  60
  61     return converted;
  62 }
  63
  64 U_CAPI int32_t  U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
  65 u_vfscanf(UFILE        *f,
  66           const char    *patternSpecification,
  67           va_list        ap)
  68 {
  69     int32_t converted;
  70     UChar *pattern;
  71     UChar patBuffer[UFMT_DEFAULT_BUFFER_SIZE];
  72     int32_t size = (int32_t)uprv_strlen(patternSpecification) + 1;
  73
  74     /* convert from the default codepage to Unicode */
  75     if (size >= MAX_UCHAR_BUFFER_SIZE(patBuffer)) {
  76         pattern = (UChar *)uprv_malloc(size * sizeof(UChar));
  77         if(pattern == 0) {
  78             return 0;
  79         }
  80     }
  81     else {
  82         pattern = patBuffer;
  83     }
  84     u_charsToUChars(patternSpecification, pattern, size);
  85
  86     /* do the work */
  87     converted = u_vfscanf_u(f, pattern, ap);
  88
  89     /* clean up */
  90     if (pattern != patBuffer) {
  91         uprv_free(pattern);
  92     }
  93
  94     return converted;
  95 }
  96
  97 U_CAPI int32_t  U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */
  98 u_vfscanf_u(UFILE       *f,
  99             const UChar *patternSpecification,
 100             va_list     ap)
 101 {
 102     return u_scanf_parse(f, patternSpecification, ap);
 103 }
 104
 105 #endif /* #if !UCONFIG_NO_FORMATTING */
 106