Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 553 | serge | 1 | /**************************************************************************** |
| 2 | * |
||
| 3 | * Open Watcom Project |
||
| 4 | * |
||
| 5 | * Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved. |
||
| 6 | * |
||
| 7 | * ======================================================================== |
||
| 8 | * |
||
| 9 | * This file contains Original Code and/or Modifications of Original |
||
| 10 | * Code as defined in and that are subject to the Sybase Open Watcom |
||
| 11 | * Public License version 1.0 (the 'License'). You may not use this file |
||
| 12 | * except in compliance with the License. BY USING THIS FILE YOU AGREE TO |
||
| 13 | * ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is |
||
| 14 | * provided with the Original Code and Modifications, and is also |
||
| 15 | * available at www.sybase.com/developer/opensource. |
||
| 16 | * |
||
| 17 | * The Original Code and all software distributed under the License are |
||
| 18 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
||
| 19 | * EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM |
||
| 20 | * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF |
||
| 21 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR |
||
| 22 | * NON-INFRINGEMENT. Please see the License for the specific language |
||
| 23 | * governing rights and limitations under the License. |
||
| 24 | * |
||
| 25 | * ======================================================================== |
||
| 26 | * |
||
| 27 | * Description: This module supports formatted output to a character buffer. |
||
| 28 | * Both character and wide character formatting are included. |
||
| 29 | * For added library granularity, this module could be split |
||
| 30 | * into two, with "bprintf" functions in one file and the |
||
| 31 | * "snprintf" functions in another. |
||
| 32 | * |
||
| 33 | * C library functions: |
||
| 34 | * _bprintf, _vbprintf |
||
| 35 | * _bwprintf, _vbwprintf |
||
| 36 | * _snprintf, _snwprintf |
||
| 37 | * _vsnprintf, _vsnwprintf |
||
| 38 | * |
||
| 39 | ****************************************************************************/ |
||
| 40 | |||
| 41 | |||
| 42 | #include "variety.h" |
||
| 43 | #include "widechar.h" |
||
| 44 | #include |
||
| 45 | #include |
||
| 46 | #include "printf.h" |
||
| 47 | |||
| 48 | struct buf_limit { |
||
| 49 | CHAR_TYPE *bufptr; |
||
| 50 | size_t bufsize; |
||
| 51 | int bufover; |
||
| 52 | }; |
||
| 53 | |||
| 54 | /* |
||
| 55 | * buf_putc -- append a character to a string in memory |
||
| 56 | */ |
||
| 57 | static slib_callback_t buf_putc; // setup calling convention |
||
| 58 | static void __SLIB_CALLBACK buf_putc( SPECS __SLIB *specs, int op_char ) |
||
| 59 | { |
||
| 60 | struct buf_limit *bufinfo; |
||
| 61 | |||
| 62 | bufinfo = (struct buf_limit *)specs->_dest; |
||
| 63 | if( specs->_output_count < bufinfo->bufsize ) { |
||
| 64 | *( bufinfo->bufptr++ ) = op_char; |
||
| 65 | specs->_output_count++; |
||
| 66 | } else { |
||
| 67 | bufinfo->bufover = -1; |
||
| 68 | } |
||
| 69 | } |
||
| 70 | |||
| 71 | _WCRTLINK int __F_NAME(_vbprintf,_vbwprintf) ( CHAR_TYPE *s, size_t bufsize, |
||
| 72 | const CHAR_TYPE *format, va_list arg) |
||
| 73 | { |
||
| 74 | register int len; |
||
| 75 | auto struct buf_limit bufinfo; |
||
| 76 | slib_callback_t *tmp; |
||
| 77 | |||
| 78 | bufinfo.bufptr = s; |
||
| 79 | bufinfo.bufsize = bufsize - 1; |
||
| 80 | bufinfo.bufover = 0; |
||
| 81 | #if defined( __386__ ) && defined( __QNX__ ) |
||
| 82 | /* avoid some segment relocations for 32-bit QNX */ |
||
| 83 | tmp = (void (*)())buf_putc; |
||
| 84 | #else |
||
| 85 | tmp = buf_putc; |
||
| 86 | #endif |
||
| 87 | len = __F_NAME(__prtf,__wprtf)( &bufinfo, format, arg, tmp ); |
||
| 88 | s[len] = '\0'; |
||
| 89 | return( len ); |
||
| 90 | } |
||
| 91 | |||
| 92 | _WCRTLINK int __F_NAME(_bprintf,_bwprintf) ( CHAR_TYPE *dest, size_t bufsize, |
||
| 93 | const CHAR_TYPE *format, ... ) |
||
| 94 | { |
||
| 95 | auto va_list args; |
||
| 96 | |||
| 97 | va_start( args, format ); |
||
| 98 | return( __F_NAME(_vbprintf,_vbwprintf)( dest, bufsize, format, args ) ); |
||
| 99 | } |
||
| 100 | |||
| 101 | // Notes: |
||
| 102 | // _vsnprintf, _vsnwprintf must return an error (-1) when buffer too small |
||
| 103 | // If a NULL character can fit, append it. If not, no error. |
||
| 104 | |||
| 105 | _WCRTLINK int __F_NAME(_vsnprintf,_vsnwprintf) ( CHAR_TYPE *s, size_t bufsize, |
||
| 106 | const CHAR_TYPE *format, va_list arg) |
||
| 107 | { |
||
| 108 | register int len; |
||
| 109 | auto struct buf_limit bufinfo; |
||
| 110 | slib_callback_t *tmp; |
||
| 111 | |||
| 112 | bufinfo.bufptr = s; |
||
| 113 | bufinfo.bufsize = bufsize; |
||
| 114 | bufinfo.bufover = 0; |
||
| 115 | #if defined( __386__ ) && defined( __QNX__ ) |
||
| 116 | /* avoid some segment relocations for 32-bit QNX */ |
||
| 117 | tmp = (void (*)())buf_putc; |
||
| 118 | #else |
||
| 119 | tmp = buf_putc; |
||
| 120 | #endif |
||
| 121 | len = __F_NAME(__prtf,__wprtf)( &bufinfo, format, arg, tmp ); |
||
| 122 | if( len < bufsize ) { |
||
| 123 | s[len] = '\0'; |
||
| 124 | } |
||
| 125 | if( bufinfo.bufover == 0 ) { |
||
| 126 | return( len ); |
||
| 127 | } else { |
||
| 128 | return( -1 ); |
||
| 129 | } |
||
| 130 | } |
||
| 131 | |||
| 132 | _WCRTLINK int __F_NAME(_snprintf,_snwprintf) ( CHAR_TYPE *dest, size_t bufsize, |
||
| 133 | const CHAR_TYPE *format, ... ) |
||
| 134 | { |
||
| 135 | auto va_list args; |
||
| 136 | |||
| 137 | va_start( args, format ); |
||
| 138 | return( __F_NAME(_vsnprintf,_vsnwprintf)( dest, bufsize, format, args ) ); |
||
| 139 | } |