[444] | 1 | /* |
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| 2 | * Copyright (c) 1990 The Regents of the University of California. |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * This code is derived from software contributed to Berkeley by |
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| 6 | * Chris Torek. |
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| 7 | * |
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| 8 | * Redistribution and use in source and binary forms, with or without |
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| 9 | * modification, are permitted provided that the following conditions |
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| 10 | * are met: |
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| 11 | * 1. Redistributions of source code must retain the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer. |
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 14 | * notice, this list of conditions and the following disclaimer in the |
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| 15 | * documentation and/or other materials provided with the distribution. |
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| 16 | * 3. Neither the name of the University nor the names of its contributors |
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| 17 | * may be used to endorse or promote products derived from this software |
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| 18 | * without specific prior written permission. |
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| 19 | * |
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| 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 30 | * SUCH DAMAGE. |
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| 31 | */ |
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| 32 | |
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| 33 | /* |
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| 34 | * Copyright (c) 2012-2014 ARM Ltd |
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| 35 | * All rights reserved. |
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| 36 | * |
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| 37 | * Redistribution and use in source and binary forms, with or without |
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| 38 | * modification, are permitted provided that the following conditions |
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| 39 | * are met: |
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| 40 | * 1. Redistributions of source code must retain the above copyright |
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| 41 | * notice, this list of conditions and the following disclaimer. |
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| 42 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 43 | * notice, this list of conditions and the following disclaimer in the |
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| 44 | * documentation and/or other materials provided with the distribution. |
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| 45 | * 3. The name of the company may not be used to endorse or promote |
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| 46 | * products derived from this software without specific prior written |
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| 47 | * permission. |
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| 48 | * |
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| 49 | * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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| 50 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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| 51 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 52 | * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 53 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
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| 54 | * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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| 55 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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| 56 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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| 57 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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| 58 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 59 | */ |
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| 60 | |
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| 61 | /* |
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| 62 | FUNCTION |
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| 63 | <<vfprintf>>, <<vprintf>>, <<vsprintf>>, <<vsnprintf>>, <<vasprintf>>, <<vasnprintf>>---format argument list |
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| 64 | |
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| 65 | INDEX |
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| 66 | vfprintf |
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| 67 | INDEX |
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| 68 | _vfprintf_r |
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| 69 | INDEX |
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| 70 | vprintf |
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| 71 | INDEX |
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| 72 | _vprintf_r |
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| 73 | INDEX |
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| 74 | vsprintf |
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| 75 | INDEX |
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| 76 | _vsprintf_r |
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| 77 | INDEX |
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| 78 | vsnprintf |
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| 79 | INDEX |
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| 80 | _vsnprintf_r |
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| 81 | INDEX |
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| 82 | vasprintf |
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| 83 | INDEX |
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| 84 | _vasprintf_r |
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| 85 | INDEX |
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| 86 | vasnprintf |
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| 87 | INDEX |
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| 88 | _vasnprintf_r |
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| 89 | |
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| 90 | SYNOPSIS |
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| 91 | #include <stdio.h> |
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| 92 | #include <stdarg.h> |
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| 93 | int vprintf(const char *<[fmt]>, va_list <[list]>); |
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| 94 | int vfprintf(FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>); |
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| 95 | int vsprintf(char *<[str]>, const char *<[fmt]>, va_list <[list]>); |
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| 96 | int vsnprintf(char *<[str]>, size_t <[size]>, const char *<[fmt]>, |
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| 97 | va_list <[list]>); |
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| 98 | int vasprintf(char **<[strp]>, const char *<[fmt]>, va_list <[list]>); |
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| 99 | char *vasnprintf(char *<[str]>, size_t *<[size]>, const char *<[fmt]>, |
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| 100 | va_list <[list]>); |
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| 101 | |
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| 102 | int _vprintf_r(struct _reent *<[reent]>, const char *<[fmt]>, |
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| 103 | va_list <[list]>); |
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| 104 | int _vfprintf_r(struct _reent *<[reent]>, FILE *<[fp]>, |
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| 105 | const char *<[fmt]>, va_list <[list]>); |
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| 106 | int _vsprintf_r(struct _reent *<[reent]>, char *<[str]>, |
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| 107 | const char *<[fmt]>, va_list <[list]>); |
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| 108 | int _vasprintf_r(struct _reent *<[reent]>, char **<[str]>, |
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| 109 | const char *<[fmt]>, va_list <[list]>); |
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| 110 | int _vsnprintf_r(struct _reent *<[reent]>, char *<[str]>, |
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| 111 | size_t <[size]>, const char *<[fmt]>, va_list <[list]>); |
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| 112 | char *_vasnprintf_r(struct _reent *<[reent]>, char *<[str]>, |
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| 113 | size_t *<[size]>, const char *<[fmt]>, va_list <[list]>); |
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| 114 | |
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| 115 | DESCRIPTION |
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| 116 | <<vprintf>>, <<vfprintf>>, <<vasprintf>>, <<vsprintf>>, <<vsnprintf>>, |
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| 117 | and <<vasnprintf>> are (respectively) variants of <<printf>>, |
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| 118 | <<fprintf>>, <<asprintf>>, <<sprintf>>, <<snprintf>>, and |
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| 119 | <<asnprintf>>. They differ only in allowing their caller to pass the |
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| 120 | variable argument list as a <<va_list>> object (initialized by |
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| 121 | <<va_start>>) rather than directly accepting a variable number of |
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| 122 | arguments. The caller is responsible for calling <<va_end>>. |
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| 123 | |
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| 124 | <<_vprintf_r>>, <<_vfprintf_r>>, <<_vasprintf_r>>, <<_vsprintf_r>>, |
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| 125 | <<_vsnprintf_r>>, and <<_vasnprintf_r>> are reentrant versions of the |
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| 126 | above. |
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| 127 | |
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| 128 | RETURNS |
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| 129 | The return values are consistent with the corresponding functions. |
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| 130 | |
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| 131 | PORTABILITY |
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| 132 | ANSI C requires <<vprintf>>, <<vfprintf>>, <<vsprintf>>, and |
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| 133 | <<vsnprintf>>. The remaining functions are newlib extensions. |
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| 134 | |
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| 135 | Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>, |
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| 136 | <<lseek>>, <<read>>, <<sbrk>>, <<write>>. |
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| 137 | */ |
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| 138 | |
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| 139 | #if defined(LIBC_SCCS) && !defined(lint) |
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| 140 | /*static char *sccsid = "from: @(#)vfprintf.c 5.50 (Berkeley) 12/16/92";*/ |
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| 141 | static char *rcsid = "$Id$"; |
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| 142 | #endif /* LIBC_SCCS and not lint */ |
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| 143 | |
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| 144 | /* Actual printf innards. |
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| 145 | This code is large and complicated... */ |
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| 146 | #include <newlib.h> |
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| 147 | |
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| 148 | #define VFPRINTF vfprintf |
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| 149 | #ifdef STRING_ONLY |
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| 150 | # define _VFPRINTF_R _svfprintf_r |
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| 151 | #else |
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| 152 | # define _VFPRINTF_R _vfprintf_r |
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| 153 | #endif |
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| 154 | |
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| 155 | #include <_ansi.h> |
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| 156 | #include <reent.h> |
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| 157 | #include <stdio.h> |
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| 158 | #include <stdlib.h> |
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| 159 | #include <string.h> |
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| 160 | #include <limits.h> |
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| 161 | #include <stdint.h> |
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| 162 | #include <wchar.h> |
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| 163 | #include <sys/lock.h> |
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| 164 | #include <stdarg.h> |
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| 165 | #include "local.h" |
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| 166 | #include "../stdlib/local.h" |
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| 167 | #include "fvwrite.h" |
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| 168 | #include "vfieeefp.h" |
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| 169 | #include "nano-vfprintf_local.h" |
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| 170 | |
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| 171 | |
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| 172 | /* GCC PR 14577 at https://gcc.gnu.org/bugzilla/show_bug.cgi?id=14557 */ |
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| 173 | #if __STDC_VERSION__ >= 201112L |
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| 174 | #define va_ptr(ap) _Generic(&(ap), va_list *: &(ap), default: (va_list *)(ap)) |
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| 175 | #elif __GNUC__ >= 4 |
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| 176 | #define va_ptr(ap) __builtin_choose_expr(__builtin_types_compatible_p(__typeof__(&(ap)), va_list *), &(ap), (va_list *)(ap)) |
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| 177 | #else |
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| 178 | #define va_ptr(ap) (sizeof(ap) == sizeof(va_list) ? (va_list *)&(ap) : (va_list *)(ap)) |
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| 179 | #endif |
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| 180 | |
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| 181 | /* The __ssputs_r function is shared between all versions of vfprintf |
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| 182 | and vfwprintf. */ |
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| 183 | #ifdef STRING_ONLY |
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| 184 | int |
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| 185 | __ssputs_r (struct _reent *ptr, |
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| 186 | FILE *fp, |
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| 187 | const char *buf, |
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| 188 | size_t len) |
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| 189 | { |
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| 190 | register int w; |
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| 191 | |
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| 192 | w = fp->_w; |
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| 193 | if (len >= w && fp->_flags & (__SMBF | __SOPT)) |
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| 194 | { |
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| 195 | /* Must be asprintf family. */ |
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| 196 | unsigned char *str; |
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| 197 | int curpos = (fp->_p - fp->_bf._base); |
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| 198 | /* Choose a geometric growth factor to avoid |
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| 199 | * quadratic realloc behavior, but use a rate less |
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| 200 | * than (1+sqrt(5))/2 to accomodate malloc |
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| 201 | * overhead. asprintf EXPECTS us to overallocate, so |
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| 202 | * that it can add a trailing \0 without |
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| 203 | * reallocating. The new allocation should thus be |
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| 204 | * max(prev_size*1.5, curpos+len+1). */ |
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| 205 | int newsize = fp->_bf._size * 3 / 2; |
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| 206 | if (newsize < curpos + len + 1) |
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| 207 | newsize = curpos + len + 1; |
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| 208 | if (fp->_flags & __SOPT) |
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| 209 | { |
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| 210 | /* asnprintf leaves original buffer alone. */ |
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| 211 | str = (unsigned char *)_malloc_r (ptr, newsize); |
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| 212 | if (!str) |
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| 213 | { |
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| 214 | ptr->_errno = ENOMEM; |
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| 215 | goto err; |
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| 216 | } |
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| 217 | memcpy (str, fp->_bf._base, curpos); |
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| 218 | fp->_flags = (fp->_flags & ~__SOPT) | __SMBF; |
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| 219 | } |
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| 220 | else |
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| 221 | { |
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| 222 | str = (unsigned char *)_realloc_r (ptr, fp->_bf._base, newsize); |
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| 223 | if (!str) |
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| 224 | { |
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| 225 | /* Free unneeded buffer. */ |
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| 226 | _free_r (ptr, fp->_bf._base); |
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| 227 | /* Ensure correct errno, even if free changed it. */ |
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| 228 | ptr->_errno = ENOMEM; |
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| 229 | goto err; |
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| 230 | } |
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| 231 | } |
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| 232 | fp->_bf._base = str; |
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| 233 | fp->_p = str + curpos; |
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| 234 | fp->_bf._size = newsize; |
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| 235 | w = len; |
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| 236 | fp->_w = newsize - curpos; |
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| 237 | } |
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| 238 | if (len < w) |
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| 239 | w = len; |
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| 240 | |
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| 241 | (void)memmove ((void *) fp->_p, (void *) buf, (size_t) (w)); |
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| 242 | fp->_w -= w; |
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| 243 | fp->_p += w; |
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| 244 | return 0; |
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| 245 | |
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| 246 | err: |
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| 247 | fp->_flags |= __SERR; |
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| 248 | return EOF; |
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| 249 | } |
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| 250 | /* __ssprint_r is the original implementation of __SPRINT. In nano |
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| 251 | version formatted IO it is reimplemented as __ssputs_r for non-wide |
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| 252 | char output, but __ssprint_r cannot be discarded because it is used |
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| 253 | by a serial of functions like svfwprintf for wide char output. */ |
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| 254 | int |
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| 255 | __ssprint_r (struct _reent *ptr, |
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| 256 | FILE *fp, |
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| 257 | register struct __suio *uio) |
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| 258 | { |
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| 259 | register size_t len; |
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| 260 | register int w; |
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| 261 | register struct __siov *iov; |
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| 262 | register const char *p = NULL; |
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| 263 | |
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| 264 | iov = uio->uio_iov; |
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| 265 | len = 0; |
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| 266 | |
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| 267 | if (uio->uio_resid == 0) |
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| 268 | { |
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| 269 | uio->uio_iovcnt = 0; |
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| 270 | return (0); |
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| 271 | } |
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| 272 | |
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| 273 | do |
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| 274 | { |
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| 275 | while (len == 0) |
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| 276 | { |
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| 277 | p = iov->iov_base; |
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| 278 | len = iov->iov_len; |
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| 279 | iov++; |
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| 280 | } |
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| 281 | w = fp->_w; |
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| 282 | if (len >= w && fp->_flags & (__SMBF | __SOPT)) |
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| 283 | { |
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| 284 | /* Must be asprintf family. */ |
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| 285 | unsigned char *str; |
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| 286 | int curpos = (fp->_p - fp->_bf._base); |
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| 287 | /* Choose a geometric growth factor to avoid |
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| 288 | * quadratic realloc behavior, but use a rate less |
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| 289 | * than (1+sqrt(5))/2 to accomodate malloc |
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| 290 | * overhead. asprintf EXPECTS us to overallocate, so |
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| 291 | * that it can add a trailing \0 without |
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| 292 | * reallocating. The new allocation should thus be |
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| 293 | * max(prev_size*1.5, curpos+len+1). */ |
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| 294 | int newsize = fp->_bf._size * 3 / 2; |
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| 295 | if (newsize < curpos + len + 1) |
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| 296 | newsize = curpos + len + 1; |
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| 297 | |
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| 298 | if (fp->_flags & __SOPT) |
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| 299 | { |
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| 300 | /* asnprintf leaves original buffer alone. */ |
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| 301 | str = (unsigned char *)_malloc_r (ptr, newsize); |
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| 302 | if (!str) |
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| 303 | { |
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| 304 | ptr->_errno = ENOMEM; |
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| 305 | goto err; |
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| 306 | } |
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| 307 | memcpy (str, fp->_bf._base, curpos); |
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| 308 | fp->_flags = (fp->_flags & ~__SOPT) | __SMBF; |
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| 309 | } |
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| 310 | else |
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| 311 | { |
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| 312 | str = (unsigned char *)_realloc_r (ptr, fp->_bf._base, |
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| 313 | newsize); |
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| 314 | if (!str) |
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| 315 | { |
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| 316 | /* Free unneeded buffer. */ |
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| 317 | _free_r (ptr, fp->_bf._base); |
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| 318 | /* Ensure correct errno, even if free changed it. */ |
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| 319 | ptr->_errno = ENOMEM; |
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| 320 | goto err; |
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| 321 | } |
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| 322 | } |
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| 323 | fp->_bf._base = str; |
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| 324 | fp->_p = str + curpos; |
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| 325 | fp->_bf._size = newsize; |
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| 326 | w = len; |
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| 327 | fp->_w = newsize - curpos; |
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| 328 | } |
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| 329 | if (len < w) |
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| 330 | w = len; |
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| 331 | |
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| 332 | (void)memmove ((void *) fp->_p, (void *) p, (size_t) (w)); |
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| 333 | fp->_w -= w; |
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| 334 | fp->_p += w; |
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| 335 | /* Pretend we copied all. */ |
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| 336 | w = len; |
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| 337 | p += w; |
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| 338 | len -= w; |
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| 339 | } |
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| 340 | while ((uio->uio_resid -= w) != 0); |
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| 341 | |
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| 342 | uio->uio_resid = 0; |
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| 343 | uio->uio_iovcnt = 0; |
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| 344 | return 0; |
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| 345 | |
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| 346 | err: |
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| 347 | fp->_flags |= __SERR; |
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| 348 | uio->uio_resid = 0; |
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| 349 | uio->uio_iovcnt = 0; |
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| 350 | return EOF; |
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| 351 | } |
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| 352 | #else |
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| 353 | /* As __ssputs_r, __sprint_r is used by output functions for wide char, |
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| 354 | like vfwprint. */ |
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| 355 | /* Flush out all the vectors defined by the given uio, |
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| 356 | then reset it so that it can be reused. */ |
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| 357 | int |
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| 358 | __sprint_r (struct _reent *ptr, |
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| 359 | FILE *fp, |
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| 360 | register struct __suio *uio) |
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| 361 | { |
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| 362 | register int err = 0; |
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| 363 | |
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| 364 | if (uio->uio_resid == 0) |
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| 365 | { |
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| 366 | uio->uio_iovcnt = 0; |
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| 367 | return 0; |
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| 368 | } |
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| 369 | #ifdef _WIDE_ORIENT |
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| 370 | if (fp->_flags2 & __SWID) |
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| 371 | { |
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| 372 | struct __siov *iov; |
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| 373 | wchar_t *p; |
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| 374 | int i, len; |
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| 375 | |
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| 376 | iov = uio->uio_iov; |
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| 377 | for (; uio->uio_resid != 0; |
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| 378 | uio->uio_resid -= len * sizeof (wchar_t), iov++) |
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| 379 | { |
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| 380 | p = (wchar_t *) iov->iov_base; |
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| 381 | len = iov->iov_len / sizeof (wchar_t); |
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| 382 | for (i = 0; i < len; i++) |
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| 383 | { |
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| 384 | if (_fputwc_r (ptr, p[i], fp) == WEOF) |
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| 385 | { |
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| 386 | err = -1; |
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| 387 | goto out; |
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| 388 | } |
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| 389 | } |
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| 390 | } |
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| 391 | } |
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| 392 | else |
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| 393 | #endif |
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| 394 | err = __sfvwrite_r(ptr, fp, uio); |
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| 395 | out: |
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| 396 | uio->uio_resid = 0; |
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| 397 | uio->uio_iovcnt = 0; |
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| 398 | return err; |
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| 399 | } |
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| 400 | |
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| 401 | _NOINLINE_STATIC int |
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| 402 | __sfputc_r (struct _reent *ptr, |
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| 403 | int c, |
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| 404 | FILE *fp) |
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| 405 | { |
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| 406 | if (--fp->_w >= 0 || (fp->_w >= fp->_lbfsize && (char)c != '\n')) |
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| 407 | return (*fp->_p++ = c); |
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| 408 | else |
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| 409 | return (__swbuf_r(ptr, c, fp)); |
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| 410 | } |
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| 411 | |
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| 412 | int |
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| 413 | __sfputs_r (struct _reent *ptr, |
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| 414 | FILE *fp, |
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| 415 | const char *buf, |
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| 416 | size_t len) |
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| 417 | { |
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| 418 | register int i; |
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| 419 | |
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| 420 | #ifdef _WIDE_ORIENT |
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| 421 | if (fp->_flags2 & __SWID) |
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| 422 | { |
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| 423 | wchar_t *p; |
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| 424 | |
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| 425 | p = (wchar_t *) buf; |
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| 426 | for (i = 0; i < (len / sizeof (wchar_t)); i++) |
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| 427 | { |
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| 428 | if (_fputwc_r (ptr, p[i], fp) == WEOF) |
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| 429 | return -1; |
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| 430 | } |
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| 431 | } |
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| 432 | else |
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| 433 | #endif |
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| 434 | { |
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| 435 | for (i = 0; i < len; i++) |
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| 436 | { |
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| 437 | /* Call __sfputc_r to skip _fputc_r. */ |
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| 438 | if (__sfputc_r (ptr, (int)buf[i], fp) == EOF) |
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| 439 | return -1; |
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| 440 | } |
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| 441 | } |
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| 442 | return (0); |
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| 443 | } |
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| 444 | #endif /* STRING_ONLY. */ |
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| 445 | |
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| 446 | int _VFPRINTF_R (struct _reent *, FILE *, const char *, va_list); |
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| 447 | |
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| 448 | #ifndef STRING_ONLY |
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| 449 | int |
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| 450 | VFPRINTF (FILE * fp, |
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| 451 | const char *fmt0, |
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| 452 | va_list ap) |
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| 453 | { |
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| 454 | int result; |
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| 455 | result = _VFPRINTF_R (_REENT, fp, fmt0, ap); |
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| 456 | return result; |
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| 457 | } |
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| 458 | |
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| 459 | int |
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| 460 | vfiprintf (FILE *, const char *, __VALIST) |
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| 461 | _ATTRIBUTE ((__alias__("vfprintf"))); |
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| 462 | #endif |
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| 463 | |
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| 464 | #ifdef STRING_ONLY |
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| 465 | # define __SPRINT __ssputs_r |
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| 466 | #else |
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| 467 | # define __SPRINT __sfputs_r |
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| 468 | #endif |
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| 469 | |
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| 470 | /* Do not need FLUSH for all sprintf functions. */ |
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| 471 | #ifdef STRING_ONLY |
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| 472 | # define FLUSH() |
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| 473 | #else |
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| 474 | # define FLUSH() |
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| 475 | #endif |
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| 476 | |
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| 477 | int |
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| 478 | _VFPRINTF_R (struct _reent *data, |
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| 479 | FILE * fp, |
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| 480 | const char *fmt0, |
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| 481 | va_list ap) |
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| 482 | { |
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| 483 | register char *fmt; /* Format string. */ |
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| 484 | register int n, m; /* Handy integers (short term usage). */ |
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| 485 | register char *cp; /* Handy char pointer (short term usage). */ |
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| 486 | const char *flag_chars; |
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| 487 | struct _prt_data_t prt_data; /* All data for decoding format string. */ |
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| 488 | |
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| 489 | /* Output function pointer. */ |
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| 490 | int (*pfunc)(struct _reent *, FILE *, const char *, size_t len); |
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| 491 | |
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| 492 | pfunc = __SPRINT; |
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| 493 | |
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| 494 | #ifndef STRING_ONLY |
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| 495 | /* Initialize std streams if not dealing with sprintf family. */ |
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| 496 | CHECK_INIT (data, fp); |
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| 497 | _newlib_flockfile_start (fp); |
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| 498 | |
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| 499 | /* Sorry, fprintf(read_only_file, "") returns EOF, not 0. */ |
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| 500 | if (cantwrite (data, fp)) |
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| 501 | { |
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| 502 | _newlib_flockfile_exit (fp); |
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| 503 | return (EOF); |
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| 504 | } |
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| 505 | |
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| 506 | #else |
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| 507 | /* Create initial buffer if we are called by asprintf family. */ |
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| 508 | if (fp->_flags & __SMBF && !fp->_bf._base) |
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| 509 | { |
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| 510 | fp->_bf._base = fp->_p = _malloc_r (data, 64); |
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| 511 | if (!fp->_p) |
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| 512 | { |
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| 513 | data->_errno = ENOMEM; |
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| 514 | return EOF; |
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| 515 | } |
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| 516 | fp->_bf._size = 64; |
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| 517 | } |
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| 518 | #endif |
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| 519 | |
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| 520 | fmt = (char *)fmt0; |
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| 521 | prt_data.ret = 0; |
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| 522 | prt_data.blank = ' '; |
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| 523 | prt_data.zero = '0'; |
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| 524 | |
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| 525 | /* Scan the format for conversions (`%' character). */ |
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| 526 | for (;;) |
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| 527 | { |
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| 528 | cp = fmt; |
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| 529 | while (*fmt != '\0' && *fmt != '%') |
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| 530 | fmt += 1; |
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| 531 | |
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| 532 | if ((m = fmt - cp) != 0) |
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| 533 | { |
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| 534 | PRINT (cp, m); |
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| 535 | prt_data.ret += m; |
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| 536 | } |
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| 537 | if (*fmt == '\0') |
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| 538 | goto done; |
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| 539 | |
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| 540 | fmt++; /* Skip over '%'. */ |
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| 541 | |
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| 542 | prt_data.flags = 0; |
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| 543 | prt_data.width = 0; |
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| 544 | prt_data.prec = -1; |
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| 545 | prt_data.dprec = 0; |
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| 546 | prt_data.l_buf[0] = '\0'; |
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| 547 | #ifdef FLOATING_POINT |
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| 548 | prt_data.lead = 0; |
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| 549 | #endif |
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| 550 | /* The flags. */ |
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| 551 | /* |
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| 552 | * ``Note that 0 is taken as a flag, not as the |
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| 553 | * beginning of a field width.'' |
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| 554 | * -- ANSI X3J11 |
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| 555 | */ |
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| 556 | flag_chars = "#-0+ "; |
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| 557 | for (; cp = memchr (flag_chars, *fmt, 5); fmt++) |
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| 558 | prt_data.flags |= (1 << (cp - flag_chars)); |
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| 559 | |
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| 560 | if (prt_data.flags & SPACESGN) |
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| 561 | prt_data.l_buf[0] = ' '; |
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| 562 | |
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| 563 | /* |
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| 564 | * ``If the space and + flags both appear, the space |
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| 565 | * flag will be ignored.'' |
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| 566 | * -- ANSI X3J11 |
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| 567 | */ |
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| 568 | if (prt_data.flags & PLUSSGN) |
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| 569 | prt_data.l_buf[0] = '+'; |
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| 570 | |
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| 571 | /* The width. */ |
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| 572 | if (*fmt == '*') |
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| 573 | { |
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| 574 | /* |
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| 575 | * ``A negative field width argument is taken as a |
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| 576 | * - flag followed by a positive field width.'' |
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| 577 | * -- ANSI X3J11 |
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| 578 | * They don't exclude field widths read from args. |
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| 579 | */ |
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| 580 | prt_data.width = GET_ARG (n, ap, int); |
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| 581 | if (prt_data.width < 0) |
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| 582 | { |
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| 583 | prt_data.width = -prt_data.width; |
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| 584 | prt_data.flags |= LADJUST; |
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| 585 | } |
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| 586 | fmt++; |
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| 587 | } |
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| 588 | else |
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| 589 | { |
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| 590 | for (; is_digit (*fmt); fmt++) |
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| 591 | prt_data.width = 10 * prt_data.width + to_digit (*fmt); |
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| 592 | } |
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| 593 | |
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| 594 | /* The precision. */ |
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| 595 | if (*fmt == '.') |
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| 596 | { |
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| 597 | fmt++; |
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| 598 | if (*fmt == '*') |
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| 599 | { |
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| 600 | fmt++; |
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| 601 | prt_data.prec = GET_ARG (n, ap, int); |
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| 602 | if (prt_data.prec < 0) |
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| 603 | prt_data.prec = -1; |
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| 604 | } |
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| 605 | else |
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| 606 | { |
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| 607 | prt_data.prec = 0; |
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| 608 | for (; is_digit (*fmt); fmt++) |
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| 609 | prt_data.prec = 10 * prt_data.prec + to_digit (*fmt); |
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| 610 | } |
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| 611 | } |
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| 612 | |
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| 613 | /* The length modifiers. */ |
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| 614 | flag_chars = "hlL"; |
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| 615 | if ((cp = memchr (flag_chars, *fmt, 3)) != NULL) |
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| 616 | { |
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| 617 | prt_data.flags |= (SHORTINT << (cp - flag_chars)); |
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| 618 | fmt++; |
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| 619 | } |
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| 620 | |
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| 621 | /* The conversion specifiers. */ |
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| 622 | prt_data.code = *fmt++; |
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| 623 | cp = memchr ("efgEFG", prt_data.code, 6); |
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| 624 | #ifdef FLOATING_POINT |
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| 625 | /* If cp is not NULL, we are facing FLOATING POINT NUMBER. */ |
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| 626 | if (cp) |
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| 627 | { |
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| 628 | /* Consume floating point argument if _printf_float is not |
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| 629 | linked. */ |
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| 630 | if (_printf_float == NULL) |
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| 631 | { |
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| 632 | if (prt_data.flags & LONGDBL) |
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| 633 | GET_ARG (N, ap, _LONG_DOUBLE); |
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| 634 | else |
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| 635 | GET_ARG (N, ap, double); |
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| 636 | } |
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| 637 | else |
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| 638 | { |
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| 639 | n = _printf_float (data, &prt_data, fp, pfunc, va_ptr(ap)); |
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| 640 | } |
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| 641 | } |
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| 642 | else |
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| 643 | #endif |
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| 644 | n = _printf_i (data, &prt_data, fp, pfunc, va_ptr(ap)); |
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| 645 | |
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| 646 | if (n == -1) |
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| 647 | goto error; |
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| 648 | |
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| 649 | prt_data.ret += n; |
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| 650 | } |
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| 651 | done: |
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| 652 | FLUSH (); |
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| 653 | error: |
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| 654 | #ifndef STRING_ONLY |
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| 655 | _newlib_flockfile_end (fp); |
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| 656 | #endif |
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| 657 | return (__sferror (fp) ? EOF : prt_data.ret); |
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| 658 | } |
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| 659 | |
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| 660 | #ifdef STRING_ONLY |
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| 661 | int |
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| 662 | _svfiprintf_r (struct _reent *, FILE *, const char *, __VALIST) |
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| 663 | _ATTRIBUTE ((__alias__("_svfprintf_r"))); |
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| 664 | #else |
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| 665 | int |
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| 666 | _vfiprintf_r (struct _reent *, FILE *, const char *, __VALIST) |
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| 667 | _ATTRIBUTE ((__alias__("_vfprintf_r"))); |
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| 668 | #endif |
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