Home | History | Annotate | Download | only in io 
      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 
    109