[164] | 1 | /***************************************************************************
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| 2 | * _ _ ____ _
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| 3 | * Project ___| | | | _ \| |
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| 4 | * / __| | | | |_) | |
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| 5 | * | (__| |_| | _ <| |___
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| 6 | * \___|\___/|_| \_\_____|
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| 7 | *
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| 8 | * Copyright (C) 1999 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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| 9 | *
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| 10 | * This software is licensed as described in the file COPYING, which
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| 11 | * you should have received as part of this distribution. The terms
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| 12 | * are also available at https://curl.haxx.se/docs/copyright.html.
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| 13 | *
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| 14 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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| 15 | * copies of the Software, and permit persons to whom the Software is
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| 16 | * furnished to do so, under the terms of the COPYING file.
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| 17 | *
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| 18 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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| 19 | * KIND, either express or implied.
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| 20 | *
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| 21 | *
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| 22 | * Purpose:
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| 23 | * A merge of Bjorn Reese's format() function and Daniel's dsprintf()
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| 24 | * 1.0. A full blooded printf() clone with full support for <num>$
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| 25 | * everywhere (parameters, widths and precisions) including variabled
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| 26 | * sized parameters (like doubles, long longs, long doubles and even
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| 27 | * void * in 64-bit architectures).
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| 28 | *
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| 29 | * Current restrictions:
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| 30 | * - Max 128 parameters
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| 31 | * - No 'long double' support.
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| 32 | *
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| 33 | * If you ever want truly portable and good *printf() clones, the project that
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| 34 | * took on from here is named 'Trio' and you find more details on the trio web
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| 35 | * page at https://daniel.haxx.se/trio/
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| 36 | */
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| 37 |
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| 38 | #include "curl_setup.h"
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| 39 |
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| 40 | #if defined(DJGPP) && (DJGPP_MINOR < 4)
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| 41 | #undef _MPRINTF_REPLACE /* don't use x_was_used() here */
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| 42 | #endif
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| 43 |
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| 44 | #include <curl/mprintf.h>
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| 45 |
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| 46 | #include "curl_memory.h"
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| 47 | /* The last #include file should be: */
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| 48 | #include "memdebug.h"
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| 49 |
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| 50 | #ifndef SIZEOF_LONG_DOUBLE
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| 51 | #define SIZEOF_LONG_DOUBLE 0
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| 52 | #endif
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| 53 |
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| 54 | /*
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| 55 | * If SIZEOF_SIZE_T has not been defined, default to the size of long.
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| 56 | */
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| 57 |
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| 58 | #ifndef SIZEOF_SIZE_T
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| 59 | # define SIZEOF_SIZE_T CURL_SIZEOF_LONG
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| 60 | #endif
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| 61 |
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| 62 | #ifdef HAVE_LONGLONG
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| 63 | # define LONG_LONG_TYPE long long
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| 64 | # define HAVE_LONG_LONG_TYPE
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| 65 | #else
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| 66 | # if defined(_MSC_VER) && (_MSC_VER >= 900) && (_INTEGRAL_MAX_BITS >= 64)
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| 67 | # define LONG_LONG_TYPE __int64
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| 68 | # define HAVE_LONG_LONG_TYPE
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| 69 | # else
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| 70 | # undef LONG_LONG_TYPE
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| 71 | # undef HAVE_LONG_LONG_TYPE
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| 72 | # endif
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| 73 | #endif
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| 74 |
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| 75 | /*
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| 76 | * Non-ANSI integer extensions
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| 77 | */
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| 78 |
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| 79 | #if (defined(__BORLANDC__) && (__BORLANDC__ >= 0x520)) || \
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| 80 | (defined(__WATCOMC__) && defined(__386__)) || \
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| 81 | (defined(__POCC__) && defined(_MSC_VER)) || \
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| 82 | (defined(_WIN32_WCE)) || \
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| 83 | (defined(__MINGW32__)) || \
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| 84 | (defined(_MSC_VER) && (_MSC_VER >= 900) && (_INTEGRAL_MAX_BITS >= 64))
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| 85 | # define MP_HAVE_INT_EXTENSIONS
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| 86 | #endif
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| 87 |
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| 88 | /*
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| 89 | * Max integer data types that mprintf.c is capable
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| 90 | */
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| 91 |
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| 92 | #ifdef HAVE_LONG_LONG_TYPE
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| 93 | # define mp_intmax_t LONG_LONG_TYPE
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| 94 | # define mp_uintmax_t unsigned LONG_LONG_TYPE
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| 95 | #else
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| 96 | # define mp_intmax_t long
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| 97 | # define mp_uintmax_t unsigned long
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| 98 | #endif
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| 99 |
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| 100 | #define BUFFSIZE 256 /* buffer for long-to-str and float-to-str calcs */
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| 101 | #define MAX_PARAMETERS 128 /* lame static limit */
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| 102 |
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| 103 | #ifdef __AMIGA__
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| 104 | # undef FORMAT_INT
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| 105 | #endif
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| 106 |
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| 107 | /* Lower-case digits. */
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| 108 | static const char lower_digits[] = "0123456789abcdefghijklmnopqrstuvwxyz";
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| 109 |
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| 110 | /* Upper-case digits. */
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| 111 | static const char upper_digits[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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| 112 |
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| 113 | #define OUTCHAR(x) \
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| 114 | do{ \
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| 115 | if(stream((unsigned char)(x), (FILE *)data) != -1) \
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| 116 | done++; \
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| 117 | else \
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| 118 | return done; /* return immediately on failure */ \
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| 119 | } WHILE_FALSE
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| 120 |
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| 121 | /* Data type to read from the arglist */
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| 122 | typedef enum {
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| 123 | FORMAT_UNKNOWN = 0,
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| 124 | FORMAT_STRING,
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| 125 | FORMAT_PTR,
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| 126 | FORMAT_INT,
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| 127 | FORMAT_INTPTR,
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| 128 | FORMAT_LONG,
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| 129 | FORMAT_LONGLONG,
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| 130 | FORMAT_DOUBLE,
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| 131 | FORMAT_LONGDOUBLE,
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| 132 | FORMAT_WIDTH /* For internal use */
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| 133 | } FormatType;
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| 134 |
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| 135 | /* conversion and display flags */
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| 136 | enum {
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| 137 | FLAGS_NEW = 0,
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| 138 | FLAGS_SPACE = 1<<0,
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| 139 | FLAGS_SHOWSIGN = 1<<1,
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| 140 | FLAGS_LEFT = 1<<2,
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| 141 | FLAGS_ALT = 1<<3,
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| 142 | FLAGS_SHORT = 1<<4,
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| 143 | FLAGS_LONG = 1<<5,
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| 144 | FLAGS_LONGLONG = 1<<6,
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| 145 | FLAGS_LONGDOUBLE = 1<<7,
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| 146 | FLAGS_PAD_NIL = 1<<8,
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| 147 | FLAGS_UNSIGNED = 1<<9,
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| 148 | FLAGS_OCTAL = 1<<10,
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| 149 | FLAGS_HEX = 1<<11,
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| 150 | FLAGS_UPPER = 1<<12,
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| 151 | FLAGS_WIDTH = 1<<13, /* '*' or '*<num>$' used */
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| 152 | FLAGS_WIDTHPARAM = 1<<14, /* width PARAMETER was specified */
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| 153 | FLAGS_PREC = 1<<15, /* precision was specified */
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| 154 | FLAGS_PRECPARAM = 1<<16, /* precision PARAMETER was specified */
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| 155 | FLAGS_CHAR = 1<<17, /* %c story */
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| 156 | FLAGS_FLOATE = 1<<18, /* %e or %E */
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| 157 | FLAGS_FLOATG = 1<<19 /* %g or %G */
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| 158 | };
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| 159 |
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| 160 | typedef struct {
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| 161 | FormatType type;
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| 162 | int flags;
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| 163 | long width; /* width OR width parameter number */
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| 164 | long precision; /* precision OR precision parameter number */
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| 165 | union {
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| 166 | char *str;
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| 167 | void *ptr;
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| 168 | union {
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| 169 | mp_intmax_t as_signed;
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| 170 | mp_uintmax_t as_unsigned;
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| 171 | } num;
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| 172 | double dnum;
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| 173 | } data;
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| 174 | } va_stack_t;
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| 175 |
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| 176 | struct nsprintf {
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| 177 | char *buffer;
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| 178 | size_t length;
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| 179 | size_t max;
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| 180 | };
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| 181 |
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| 182 | struct asprintf {
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| 183 | char *buffer; /* allocated buffer */
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| 184 | size_t len; /* length of string */
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| 185 | size_t alloc; /* length of alloc */
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| 186 | int fail; /* (!= 0) if an alloc has failed and thus
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| 187 | the output is not the complete data */
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| 188 | };
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| 189 |
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| 190 | static long dprintf_DollarString(char *input, char **end)
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| 191 | {
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| 192 | int number=0;
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| 193 | while(ISDIGIT(*input)) {
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| 194 | number *= 10;
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| 195 | number += *input-'0';
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| 196 | input++;
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| 197 | }
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| 198 | if(number && ('$'==*input++)) {
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| 199 | *end = input;
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| 200 | return number;
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| 201 | }
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| 202 | return 0;
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| 203 | }
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| 204 |
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| 205 | static bool dprintf_IsQualifierNoDollar(const char *fmt)
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| 206 | {
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| 207 | #if defined(MP_HAVE_INT_EXTENSIONS)
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| 208 | if(!strncmp(fmt, "I32", 3) || !strncmp(fmt, "I64", 3)) {
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| 209 | return TRUE;
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| 210 | }
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| 211 | #endif
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| 212 |
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| 213 | switch(*fmt) {
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| 214 | case '-': case '+': case ' ': case '#': case '.':
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| 215 | case '0': case '1': case '2': case '3': case '4':
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| 216 | case '5': case '6': case '7': case '8': case '9':
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| 217 | case 'h': case 'l': case 'L': case 'z': case 'q':
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| 218 | case '*': case 'O':
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| 219 | #if defined(MP_HAVE_INT_EXTENSIONS)
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| 220 | case 'I':
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| 221 | #endif
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| 222 | return TRUE;
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| 223 |
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| 224 | default:
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| 225 | return FALSE;
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| 226 | }
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| 227 | }
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| 228 | #if 0
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| 229 | /******************************************************************
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| 230 | *
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| 231 | * Pass 1:
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| 232 | * Create an index with the type of each parameter entry and its
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| 233 | * value (may vary in size)
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| 234 | *
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| 235 | ******************************************************************/
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| 236 |
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| 237 | static long dprintf_Pass1(const char *format, va_stack_t *vto, char **endpos,
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| 238 | va_list arglist)
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| 239 | {
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| 240 | char *fmt = (char *)format;
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| 241 | int param_num = 0;
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| 242 | long this_param;
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| 243 | long width;
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| 244 | long precision;
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| 245 | int flags;
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| 246 | long max_param=0;
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| 247 | long i;
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| 248 |
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| 249 | while(*fmt) {
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| 250 | if(*fmt++ == '%') {
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| 251 | if(*fmt == '%') {
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| 252 | fmt++;
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| 253 | continue; /* while */
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| 254 | }
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| 255 |
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| 256 | flags = FLAGS_NEW;
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| 257 |
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| 258 | /* Handle the positional case (N$) */
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| 259 |
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| 260 | param_num++;
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| 261 |
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| 262 | this_param = dprintf_DollarString(fmt, &fmt);
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| 263 | if(0 == this_param)
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| 264 | /* we got no positional, get the next counter */
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| 265 | this_param = param_num;
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| 266 |
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| 267 | if(this_param > max_param)
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| 268 | max_param = this_param;
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| 269 |
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| 270 | /*
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| 271 | * The parameter with number 'i' should be used. Next, we need
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| 272 | * to get SIZE and TYPE of the parameter. Add the information
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| 273 | * to our array.
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| 274 | */
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| 275 |
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| 276 | width = 0;
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| 277 | precision = 0;
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| 278 |
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| 279 | /* Handle the flags */
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| 280 |
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| 281 | while(dprintf_IsQualifierNoDollar(fmt)) {
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| 282 | #if defined(MP_HAVE_INT_EXTENSIONS)
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| 283 | if(!strncmp(fmt, "I32", 3)) {
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| 284 | flags |= FLAGS_LONG;
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| 285 | fmt += 3;
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| 286 | }
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| 287 | else if(!strncmp(fmt, "I64", 3)) {
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| 288 | flags |= FLAGS_LONGLONG;
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| 289 | fmt += 3;
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| 290 | }
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| 291 | else
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| 292 | #endif
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| 293 |
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| 294 | switch(*fmt++) {
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| 295 | case ' ':
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| 296 | flags |= FLAGS_SPACE;
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| 297 | break;
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| 298 | case '+':
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| 299 | flags |= FLAGS_SHOWSIGN;
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| 300 | break;
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| 301 | case '-':
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| 302 | flags |= FLAGS_LEFT;
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| 303 | flags &= ~FLAGS_PAD_NIL;
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| 304 | break;
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| 305 | case '#':
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| 306 | flags |= FLAGS_ALT;
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| 307 | break;
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| 308 | case '.':
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| 309 | flags |= FLAGS_PREC;
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| 310 | if('*' == *fmt) {
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| 311 | /* The precision is picked from a specified parameter */
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| 312 |
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| 313 | flags |= FLAGS_PRECPARAM;
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| 314 | fmt++;
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| 315 | param_num++;
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| 316 |
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| 317 | i = dprintf_DollarString(fmt, &fmt);
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| 318 | if(i)
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| 319 | precision = i;
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| 320 | else
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| 321 | precision = param_num;
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| 322 |
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| 323 | if(precision > max_param)
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| 324 | max_param = precision;
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| 325 | }
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| 326 | else {
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| 327 | flags |= FLAGS_PREC;
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| 328 | precision = strtol(fmt, &fmt, 10);
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| 329 | }
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| 330 | break;
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| 331 | case 'h':
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| 332 | flags |= FLAGS_SHORT;
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| 333 | break;
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| 334 | #if defined(MP_HAVE_INT_EXTENSIONS)
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| 335 | case 'I':
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| 336 | #if (CURL_SIZEOF_CURL_OFF_T > CURL_SIZEOF_LONG)
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| 337 | flags |= FLAGS_LONGLONG;
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| 338 | #else
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| 339 | flags |= FLAGS_LONG;
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| 340 | #endif
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| 341 | break;
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| 342 | #endif
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| 343 | case 'l':
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| 344 | if(flags & FLAGS_LONG)
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| 345 | flags |= FLAGS_LONGLONG;
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| 346 | else
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| 347 | flags |= FLAGS_LONG;
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| 348 | break;
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| 349 | case 'L':
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| 350 | flags |= FLAGS_LONGDOUBLE;
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| 351 | break;
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| 352 | case 'q':
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| 353 | flags |= FLAGS_LONGLONG;
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| 354 | break;
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| 355 | case 'z':
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| 356 | /* the code below generates a warning if -Wunreachable-code is
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| 357 | used */
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| 358 | #if (SIZEOF_SIZE_T > CURL_SIZEOF_LONG)
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| 359 | flags |= FLAGS_LONGLONG;
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| 360 | #else
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| 361 | flags |= FLAGS_LONG;
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| 362 | #endif
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| 363 | break;
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| 364 | case 'O':
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| 365 | #if (CURL_SIZEOF_CURL_OFF_T > CURL_SIZEOF_LONG)
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| 366 | flags |= FLAGS_LONGLONG;
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| 367 | #else
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| 368 | flags |= FLAGS_LONG;
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| 369 | #endif
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| 370 | break;
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| 371 | case '0':
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| 372 | if(!(flags & FLAGS_LEFT))
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| 373 | flags |= FLAGS_PAD_NIL;
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| 374 | /* FALLTHROUGH */
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| 375 | case '1': case '2': case '3': case '4':
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| 376 | case '5': case '6': case '7': case '8': case '9':
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| 377 | flags |= FLAGS_WIDTH;
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| 378 | width = strtol(fmt-1, &fmt, 10);
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| 379 | break;
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| 380 | case '*': /* Special case */
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| 381 | flags |= FLAGS_WIDTHPARAM;
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| 382 | param_num++;
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| 383 |
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| 384 | i = dprintf_DollarString(fmt, &fmt);
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| 385 | if(i)
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| 386 | width = i;
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| 387 | else
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| 388 | width = param_num;
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| 389 | if(width > max_param)
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| 390 | max_param=width;
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| 391 | break;
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| 392 | default:
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| 393 | break;
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| 394 | }
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| 395 | } /* switch */
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| 396 |
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| 397 | /* Handle the specifier */
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| 398 |
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| 399 | i = this_param - 1;
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| 400 |
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| 401 | switch (*fmt) {
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| 402 | case 'S':
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| 403 | flags |= FLAGS_ALT;
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| 404 | /* FALLTHROUGH */
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| 405 | case 's':
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| 406 | vto[i].type = FORMAT_STRING;
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| 407 | break;
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| 408 | case 'n':
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| 409 | vto[i].type = FORMAT_INTPTR;
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| 410 | break;
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| 411 | case 'p':
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| 412 | vto[i].type = FORMAT_PTR;
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| 413 | break;
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| 414 | case 'd': case 'i':
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| 415 | vto[i].type = FORMAT_INT;
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| 416 | break;
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| 417 | case 'u':
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| 418 | vto[i].type = FORMAT_INT;
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| 419 | flags |= FLAGS_UNSIGNED;
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| 420 | break;
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| 421 | case 'o':
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| 422 | vto[i].type = FORMAT_INT;
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| 423 | flags |= FLAGS_OCTAL;
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| 424 | break;
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| 425 | case 'x':
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| 426 | vto[i].type = FORMAT_INT;
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| 427 | flags |= FLAGS_HEX|FLAGS_UNSIGNED;
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| 428 | break;
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| 429 | case 'X':
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| 430 | vto[i].type = FORMAT_INT;
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| 431 | flags |= FLAGS_HEX|FLAGS_UPPER|FLAGS_UNSIGNED;
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| 432 | break;
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| 433 | case 'c':
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| 434 | vto[i].type = FORMAT_INT;
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| 435 | flags |= FLAGS_CHAR;
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| 436 | break;
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| 437 | case 'f':
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| 438 | vto[i].type = FORMAT_DOUBLE;
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| 439 | break;
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| 440 | case 'e':
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| 441 | vto[i].type = FORMAT_DOUBLE;
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| 442 | flags |= FLAGS_FLOATE;
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| 443 | break;
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| 444 | case 'E':
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| 445 | vto[i].type = FORMAT_DOUBLE;
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| 446 | flags |= FLAGS_FLOATE|FLAGS_UPPER;
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| 447 | break;
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| 448 | case 'g':
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| 449 | vto[i].type = FORMAT_DOUBLE;
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| 450 | flags |= FLAGS_FLOATG;
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| 451 | break;
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| 452 | case 'G':
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| 453 | vto[i].type = FORMAT_DOUBLE;
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| 454 | flags |= FLAGS_FLOATG|FLAGS_UPPER;
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| 455 | break;
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| 456 | default:
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| 457 | vto[i].type = FORMAT_UNKNOWN;
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| 458 | break;
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| 459 | } /* switch */
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---|
| 460 |
|
---|
| 461 | vto[i].flags = flags;
|
---|
| 462 | vto[i].width = width;
|
---|
| 463 | vto[i].precision = precision;
|
---|
| 464 |
|
---|
| 465 | if(flags & FLAGS_WIDTHPARAM) {
|
---|
| 466 | /* we have the width specified from a parameter, so we make that
|
---|
| 467 | parameter's info setup properly */
|
---|
| 468 | vto[i].width = width - 1;
|
---|
| 469 | i = width - 1;
|
---|
| 470 | vto[i].type = FORMAT_WIDTH;
|
---|
| 471 | vto[i].flags = FLAGS_NEW;
|
---|
| 472 | vto[i].precision = vto[i].width = 0; /* can't use width or precision
|
---|
| 473 | of width! */
|
---|
| 474 | }
|
---|
| 475 | if(flags & FLAGS_PRECPARAM) {
|
---|
| 476 | /* we have the precision specified from a parameter, so we make that
|
---|
| 477 | parameter's info setup properly */
|
---|
| 478 | vto[i].precision = precision - 1;
|
---|
| 479 | i = precision - 1;
|
---|
| 480 | vto[i].type = FORMAT_WIDTH;
|
---|
| 481 | vto[i].flags = FLAGS_NEW;
|
---|
| 482 | vto[i].precision = vto[i].width = 0; /* can't use width or precision
|
---|
| 483 | of width! */
|
---|
| 484 | }
|
---|
| 485 | *endpos++ = fmt + 1; /* end of this sequence */
|
---|
| 486 | }
|
---|
| 487 | }
|
---|
| 488 |
|
---|
| 489 | /* Read the arg list parameters into our data list */
|
---|
| 490 | for(i=0; i<max_param; i++) {
|
---|
| 491 | if((i + 1 < max_param) && (vto[i + 1].type == FORMAT_WIDTH)) {
|
---|
| 492 | /* Width/precision arguments must be read before the main argument
|
---|
| 493 | * they are attached to
|
---|
| 494 | */
|
---|
| 495 | vto[i + 1].data.num.as_signed = (mp_intmax_t)va_arg(arglist, int);
|
---|
| 496 | }
|
---|
| 497 |
|
---|
| 498 | switch (vto[i].type) {
|
---|
| 499 | case FORMAT_STRING:
|
---|
| 500 | vto[i].data.str = va_arg(arglist, char *);
|
---|
| 501 | break;
|
---|
| 502 |
|
---|
| 503 | case FORMAT_INTPTR:
|
---|
| 504 | case FORMAT_UNKNOWN:
|
---|
| 505 | case FORMAT_PTR:
|
---|
| 506 | vto[i].data.ptr = va_arg(arglist, void *);
|
---|
| 507 | break;
|
---|
| 508 |
|
---|
| 509 | case FORMAT_INT:
|
---|
| 510 | #ifdef HAVE_LONG_LONG_TYPE
|
---|
| 511 | if((vto[i].flags & FLAGS_LONGLONG) && (vto[i].flags & FLAGS_UNSIGNED))
|
---|
| 512 | vto[i].data.num.as_unsigned =
|
---|
| 513 | (mp_uintmax_t)va_arg(arglist, mp_uintmax_t);
|
---|
| 514 | else if(vto[i].flags & FLAGS_LONGLONG)
|
---|
| 515 | vto[i].data.num.as_signed =
|
---|
| 516 | (mp_intmax_t)va_arg(arglist, mp_intmax_t);
|
---|
| 517 | else
|
---|
| 518 | #endif
|
---|
| 519 | {
|
---|
| 520 | if((vto[i].flags & FLAGS_LONG) && (vto[i].flags & FLAGS_UNSIGNED))
|
---|
| 521 | vto[i].data.num.as_unsigned =
|
---|
| 522 | (mp_uintmax_t)va_arg(arglist, unsigned long);
|
---|
| 523 | else if(vto[i].flags & FLAGS_LONG)
|
---|
| 524 | vto[i].data.num.as_signed =
|
---|
| 525 | (mp_intmax_t)va_arg(arglist, long);
|
---|
| 526 | else if(vto[i].flags & FLAGS_UNSIGNED)
|
---|
| 527 | vto[i].data.num.as_unsigned =
|
---|
| 528 | (mp_uintmax_t)va_arg(arglist, unsigned int);
|
---|
| 529 | else
|
---|
| 530 | vto[i].data.num.as_signed =
|
---|
| 531 | (mp_intmax_t)va_arg(arglist, int);
|
---|
| 532 | }
|
---|
| 533 | break;
|
---|
| 534 |
|
---|
| 535 | case FORMAT_DOUBLE:
|
---|
| 536 | vto[i].data.dnum = va_arg(arglist, double);
|
---|
| 537 | break;
|
---|
| 538 |
|
---|
| 539 | case FORMAT_WIDTH:
|
---|
| 540 | /* Argument has been read. Silently convert it into an integer
|
---|
| 541 | * for later use
|
---|
| 542 | */
|
---|
| 543 | vto[i].type = FORMAT_INT;
|
---|
| 544 | break;
|
---|
| 545 |
|
---|
| 546 | default:
|
---|
| 547 | break;
|
---|
| 548 | }
|
---|
| 549 | }
|
---|
| 550 |
|
---|
| 551 | return max_param;
|
---|
| 552 |
|
---|
| 553 | }
|
---|
| 554 |
|
---|
| 555 | static int dprintf_formatf(
|
---|
| 556 | void *data, /* untouched by format(), just sent to the stream() function in
|
---|
| 557 | the second argument */
|
---|
| 558 | /* function pointer called for each output character */
|
---|
| 559 | int (*stream)(int, FILE *),
|
---|
| 560 | const char *format, /* %-formatted string */
|
---|
| 561 | va_list ap_save) /* list of parameters */
|
---|
| 562 | {
|
---|
| 563 | /* Base-36 digits for numbers. */
|
---|
| 564 | const char *digits = lower_digits;
|
---|
| 565 |
|
---|
| 566 | /* Pointer into the format string. */
|
---|
| 567 | char *f;
|
---|
| 568 |
|
---|
| 569 | /* Number of characters written. */
|
---|
| 570 | int done = 0;
|
---|
| 571 |
|
---|
| 572 | long param; /* current parameter to read */
|
---|
| 573 | long param_num=0; /* parameter counter */
|
---|
| 574 |
|
---|
| 575 | va_stack_t vto[MAX_PARAMETERS];
|
---|
| 576 | char *endpos[MAX_PARAMETERS];
|
---|
| 577 | char **end;
|
---|
| 578 |
|
---|
| 579 | char work[BUFFSIZE];
|
---|
| 580 |
|
---|
| 581 | va_stack_t *p;
|
---|
| 582 |
|
---|
| 583 | /* Do the actual %-code parsing */
|
---|
| 584 | dprintf_Pass1(format, vto, endpos, ap_save);
|
---|
| 585 |
|
---|
| 586 | end = &endpos[0]; /* the initial end-position from the list dprintf_Pass1()
|
---|
| 587 | created for us */
|
---|
| 588 |
|
---|
| 589 | f = (char *)format;
|
---|
| 590 | while(*f != '\0') {
|
---|
| 591 | /* Format spec modifiers. */
|
---|
| 592 | int is_alt;
|
---|
| 593 |
|
---|
| 594 | /* Width of a field. */
|
---|
| 595 | long width;
|
---|
| 596 |
|
---|
| 597 | /* Precision of a field. */
|
---|
| 598 | long prec;
|
---|
| 599 |
|
---|
| 600 | /* Decimal integer is negative. */
|
---|
| 601 | int is_neg;
|
---|
| 602 |
|
---|
| 603 | /* Base of a number to be written. */
|
---|
| 604 | long base;
|
---|
| 605 |
|
---|
| 606 | /* Integral values to be written. */
|
---|
| 607 | mp_uintmax_t num;
|
---|
| 608 |
|
---|
| 609 | /* Used to convert negative in positive. */
|
---|
| 610 | mp_intmax_t signed_num;
|
---|
| 611 |
|
---|
| 612 | if(*f != '%') {
|
---|
| 613 | /* This isn't a format spec, so write everything out until the next one
|
---|
| 614 | OR end of string is reached. */
|
---|
| 615 | do {
|
---|
| 616 | OUTCHAR(*f);
|
---|
| 617 | } while(*++f && ('%' != *f));
|
---|
| 618 | continue;
|
---|
| 619 | }
|
---|
| 620 |
|
---|
| 621 | ++f;
|
---|
| 622 |
|
---|
| 623 | /* Check for "%%". Note that although the ANSI standard lists
|
---|
| 624 | '%' as a conversion specifier, it says "The complete format
|
---|
| 625 | specification shall be `%%'," so we can avoid all the width
|
---|
| 626 | and precision processing. */
|
---|
| 627 | if(*f == '%') {
|
---|
| 628 | ++f;
|
---|
| 629 | OUTCHAR('%');
|
---|
| 630 | continue;
|
---|
| 631 | }
|
---|
| 632 |
|
---|
| 633 | /* If this is a positional parameter, the position must follow immediately
|
---|
| 634 | after the %, thus create a %<num>$ sequence */
|
---|
| 635 | param=dprintf_DollarString(f, &f);
|
---|
| 636 |
|
---|
| 637 | if(!param)
|
---|
| 638 | param = param_num;
|
---|
| 639 | else
|
---|
| 640 | --param;
|
---|
| 641 |
|
---|
| 642 | param_num++; /* increase this always to allow "%2$s %1$s %s" and then the
|
---|
| 643 | third %s will pick the 3rd argument */
|
---|
| 644 |
|
---|
| 645 | p = &vto[param];
|
---|
| 646 |
|
---|
| 647 | /* pick up the specified width */
|
---|
| 648 | if(p->flags & FLAGS_WIDTHPARAM)
|
---|
| 649 | width = (long)vto[p->width].data.num.as_signed;
|
---|
| 650 | else
|
---|
| 651 | width = p->width;
|
---|
| 652 |
|
---|
| 653 | /* pick up the specified precision */
|
---|
| 654 | if(p->flags & FLAGS_PRECPARAM) {
|
---|
| 655 | prec = (long)vto[p->precision].data.num.as_signed;
|
---|
| 656 | param_num++; /* since the precision is extraced from a parameter, we
|
---|
| 657 | must skip that to get to the next one properly */
|
---|
| 658 | }
|
---|
| 659 | else if(p->flags & FLAGS_PREC)
|
---|
| 660 | prec = p->precision;
|
---|
| 661 | else
|
---|
| 662 | prec = -1;
|
---|
| 663 |
|
---|
| 664 | is_alt = (p->flags & FLAGS_ALT) ? 1 : 0;
|
---|
| 665 |
|
---|
| 666 | switch (p->type) {
|
---|
| 667 | case FORMAT_INT:
|
---|
| 668 | num = p->data.num.as_unsigned;
|
---|
| 669 | if(p->flags & FLAGS_CHAR) {
|
---|
| 670 | /* Character. */
|
---|
| 671 | if(!(p->flags & FLAGS_LEFT))
|
---|
| 672 | while(--width > 0)
|
---|
| 673 | OUTCHAR(' ');
|
---|
| 674 | OUTCHAR((char) num);
|
---|
| 675 | if(p->flags & FLAGS_LEFT)
|
---|
| 676 | while(--width > 0)
|
---|
| 677 | OUTCHAR(' ');
|
---|
| 678 | break;
|
---|
| 679 | }
|
---|
| 680 | if(p->flags & FLAGS_OCTAL) {
|
---|
| 681 | /* Octal unsigned integer. */
|
---|
| 682 | base = 8;
|
---|
| 683 | goto unsigned_number;
|
---|
| 684 | }
|
---|
| 685 | else if(p->flags & FLAGS_HEX) {
|
---|
| 686 | /* Hexadecimal unsigned integer. */
|
---|
| 687 |
|
---|
| 688 | digits = (p->flags & FLAGS_UPPER)? upper_digits : lower_digits;
|
---|
| 689 | base = 16;
|
---|
| 690 | goto unsigned_number;
|
---|
| 691 | }
|
---|
| 692 | else if(p->flags & FLAGS_UNSIGNED) {
|
---|
| 693 | /* Decimal unsigned integer. */
|
---|
| 694 | base = 10;
|
---|
| 695 | goto unsigned_number;
|
---|
| 696 | }
|
---|
| 697 |
|
---|
| 698 | /* Decimal integer. */
|
---|
| 699 | base = 10;
|
---|
| 700 |
|
---|
| 701 | is_neg = (p->data.num.as_signed < (mp_intmax_t)0) ? 1 : 0;
|
---|
| 702 | if(is_neg) {
|
---|
| 703 | /* signed_num might fail to hold absolute negative minimum by 1 */
|
---|
| 704 | signed_num = p->data.num.as_signed + (mp_intmax_t)1;
|
---|
| 705 | signed_num = -signed_num;
|
---|
| 706 | num = (mp_uintmax_t)signed_num;
|
---|
| 707 | num += (mp_uintmax_t)1;
|
---|
| 708 | }
|
---|
| 709 |
|
---|
| 710 | goto number;
|
---|
| 711 |
|
---|
| 712 | unsigned_number:
|
---|
| 713 | /* Unsigned number of base BASE. */
|
---|
| 714 | is_neg = 0;
|
---|
| 715 |
|
---|
| 716 | number:
|
---|
| 717 | /* Number of base BASE. */
|
---|
| 718 | {
|
---|
| 719 | char *workend = &work[sizeof(work) - 1];
|
---|
| 720 | char *w;
|
---|
| 721 |
|
---|
| 722 | /* Supply a default precision if none was given. */
|
---|
| 723 | if(prec == -1)
|
---|
| 724 | prec = 1;
|
---|
| 725 |
|
---|
| 726 | /* Put the number in WORK. */
|
---|
| 727 | w = workend;
|
---|
| 728 | while(num > 0) {
|
---|
| 729 | *w-- = digits[num % base];
|
---|
| 730 | num /= base;
|
---|
| 731 | }
|
---|
| 732 | width -= (long)(workend - w);
|
---|
| 733 | prec -= (long)(workend - w);
|
---|
| 734 |
|
---|
| 735 | if(is_alt && base == 8 && prec <= 0) {
|
---|
| 736 | *w-- = '0';
|
---|
| 737 | --width;
|
---|
| 738 | }
|
---|
| 739 |
|
---|
| 740 | if(prec > 0) {
|
---|
| 741 | width -= prec;
|
---|
| 742 | while(prec-- > 0)
|
---|
| 743 | *w-- = '0';
|
---|
| 744 | }
|
---|
| 745 |
|
---|
| 746 | if(is_alt && base == 16)
|
---|
| 747 | width -= 2;
|
---|
| 748 |
|
---|
| 749 | if(is_neg || (p->flags & FLAGS_SHOWSIGN) || (p->flags & FLAGS_SPACE))
|
---|
| 750 | --width;
|
---|
| 751 |
|
---|
| 752 | if(!(p->flags & FLAGS_LEFT) && !(p->flags & FLAGS_PAD_NIL))
|
---|
| 753 | while(width-- > 0)
|
---|
| 754 | OUTCHAR(' ');
|
---|
| 755 |
|
---|
| 756 | if(is_neg)
|
---|
| 757 | OUTCHAR('-');
|
---|
| 758 | else if(p->flags & FLAGS_SHOWSIGN)
|
---|
| 759 | OUTCHAR('+');
|
---|
| 760 | else if(p->flags & FLAGS_SPACE)
|
---|
| 761 | OUTCHAR(' ');
|
---|
| 762 |
|
---|
| 763 | if(is_alt && base == 16) {
|
---|
| 764 | OUTCHAR('0');
|
---|
| 765 | if(p->flags & FLAGS_UPPER)
|
---|
| 766 | OUTCHAR('X');
|
---|
| 767 | else
|
---|
| 768 | OUTCHAR('x');
|
---|
| 769 | }
|
---|
| 770 |
|
---|
| 771 | if(!(p->flags & FLAGS_LEFT) && (p->flags & FLAGS_PAD_NIL))
|
---|
| 772 | while(width-- > 0)
|
---|
| 773 | OUTCHAR('0');
|
---|
| 774 |
|
---|
| 775 | /* Write the number. */
|
---|
| 776 | while(++w <= workend) {
|
---|
| 777 | OUTCHAR(*w);
|
---|
| 778 | }
|
---|
| 779 |
|
---|
| 780 | if(p->flags & FLAGS_LEFT)
|
---|
| 781 | while(width-- > 0)
|
---|
| 782 | OUTCHAR(' ');
|
---|
| 783 | }
|
---|
| 784 | break;
|
---|
| 785 |
|
---|
| 786 | case FORMAT_STRING:
|
---|
| 787 | /* String. */
|
---|
| 788 | {
|
---|
| 789 | static const char null[] = "(nil)";
|
---|
| 790 | const char *str;
|
---|
| 791 | size_t len;
|
---|
| 792 |
|
---|
| 793 | str = (char *) p->data.str;
|
---|
| 794 | if(str == NULL) {
|
---|
| 795 | /* Write null[] if there's space. */
|
---|
| 796 | if(prec == -1 || prec >= (long) sizeof(null) - 1) {
|
---|
| 797 | str = null;
|
---|
| 798 | len = sizeof(null) - 1;
|
---|
| 799 | /* Disable quotes around (nil) */
|
---|
| 800 | p->flags &= (~FLAGS_ALT);
|
---|
| 801 | }
|
---|
| 802 | else {
|
---|
| 803 | str = "";
|
---|
| 804 | len = 0;
|
---|
| 805 | }
|
---|
| 806 | }
|
---|
| 807 | else if(prec != -1)
|
---|
| 808 | len = (size_t)prec;
|
---|
| 809 | else
|
---|
| 810 | len = strlen(str);
|
---|
| 811 |
|
---|
| 812 | width -= (long)len;
|
---|
| 813 |
|
---|
| 814 | if(p->flags & FLAGS_ALT)
|
---|
| 815 | OUTCHAR('"');
|
---|
| 816 |
|
---|
| 817 | if(!(p->flags&FLAGS_LEFT))
|
---|
| 818 | while(width-- > 0)
|
---|
| 819 | OUTCHAR(' ');
|
---|
| 820 |
|
---|
| 821 | while((len-- > 0) && *str)
|
---|
| 822 | OUTCHAR(*str++);
|
---|
| 823 | if(p->flags&FLAGS_LEFT)
|
---|
| 824 | while(width-- > 0)
|
---|
| 825 | OUTCHAR(' ');
|
---|
| 826 |
|
---|
| 827 | if(p->flags & FLAGS_ALT)
|
---|
| 828 | OUTCHAR('"');
|
---|
| 829 | }
|
---|
| 830 | break;
|
---|
| 831 |
|
---|
| 832 | case FORMAT_PTR:
|
---|
| 833 | /* Generic pointer. */
|
---|
| 834 | {
|
---|
| 835 | void *ptr;
|
---|
| 836 | ptr = (void *) p->data.ptr;
|
---|
| 837 | if(ptr != NULL) {
|
---|
| 838 | /* If the pointer is not NULL, write it as a %#x spec. */
|
---|
| 839 | base = 16;
|
---|
| 840 | digits = (p->flags & FLAGS_UPPER)? upper_digits : lower_digits;
|
---|
| 841 | is_alt = 1;
|
---|
| 842 | num = (size_t) ptr;
|
---|
| 843 | is_neg = 0;
|
---|
| 844 | goto number;
|
---|
| 845 | }
|
---|
| 846 | else {
|
---|
| 847 | /* Write "(nil)" for a nil pointer. */
|
---|
| 848 | static const char strnil[] = "(nil)";
|
---|
| 849 | const char *point;
|
---|
| 850 |
|
---|
| 851 | width -= (long)(sizeof(strnil) - 1);
|
---|
| 852 | if(p->flags & FLAGS_LEFT)
|
---|
| 853 | while(width-- > 0)
|
---|
| 854 | OUTCHAR(' ');
|
---|
| 855 | for(point = strnil; *point != '\0'; ++point)
|
---|
| 856 | OUTCHAR(*point);
|
---|
| 857 | if(! (p->flags & FLAGS_LEFT))
|
---|
| 858 | while(width-- > 0)
|
---|
| 859 | OUTCHAR(' ');
|
---|
| 860 | }
|
---|
| 861 | }
|
---|
| 862 | break;
|
---|
| 863 |
|
---|
| 864 | case FORMAT_DOUBLE:
|
---|
| 865 | {
|
---|
| 866 | char formatbuf[32]="%";
|
---|
| 867 | char *fptr = &formatbuf[1];
|
---|
| 868 | size_t left = sizeof(formatbuf)-strlen(formatbuf);
|
---|
| 869 | int len;
|
---|
| 870 |
|
---|
| 871 | width = -1;
|
---|
| 872 | if(p->flags & FLAGS_WIDTH)
|
---|
| 873 | width = p->width;
|
---|
| 874 | else if(p->flags & FLAGS_WIDTHPARAM)
|
---|
| 875 | width = (long)vto[p->width].data.num.as_signed;
|
---|
| 876 |
|
---|
| 877 | prec = -1;
|
---|
| 878 | if(p->flags & FLAGS_PREC)
|
---|
| 879 | prec = p->precision;
|
---|
| 880 | else if(p->flags & FLAGS_PRECPARAM)
|
---|
| 881 | prec = (long)vto[p->precision].data.num.as_signed;
|
---|
| 882 |
|
---|
| 883 | if(p->flags & FLAGS_LEFT)
|
---|
| 884 | *fptr++ = '-';
|
---|
| 885 | if(p->flags & FLAGS_SHOWSIGN)
|
---|
| 886 | *fptr++ = '+';
|
---|
| 887 | if(p->flags & FLAGS_SPACE)
|
---|
| 888 | *fptr++ = ' ';
|
---|
| 889 | if(p->flags & FLAGS_ALT)
|
---|
| 890 | *fptr++ = '#';
|
---|
| 891 |
|
---|
| 892 | *fptr = 0;
|
---|
| 893 |
|
---|
| 894 | if(width >= 0) {
|
---|
| 895 | /* RECURSIVE USAGE */
|
---|
| 896 | len = curl_msnprintf(fptr, left, "%ld", width);
|
---|
| 897 | fptr += len;
|
---|
| 898 | left -= len;
|
---|
| 899 | }
|
---|
| 900 | if(prec >= 0) {
|
---|
| 901 | /* RECURSIVE USAGE */
|
---|
| 902 | len = curl_msnprintf(fptr, left, ".%ld", prec);
|
---|
| 903 | fptr += len;
|
---|
| 904 | }
|
---|
| 905 | if(p->flags & FLAGS_LONG)
|
---|
| 906 | *fptr++ = 'l';
|
---|
| 907 |
|
---|
| 908 | if(p->flags & FLAGS_FLOATE)
|
---|
| 909 | *fptr++ = (char)((p->flags & FLAGS_UPPER) ? 'E' : 'e');
|
---|
| 910 | else if(p->flags & FLAGS_FLOATG)
|
---|
| 911 | *fptr++ = (char)((p->flags & FLAGS_UPPER) ? 'G' : 'g');
|
---|
| 912 | else
|
---|
| 913 | *fptr++ = 'f';
|
---|
| 914 |
|
---|
| 915 | *fptr = 0; /* and a final zero termination */
|
---|
| 916 |
|
---|
| 917 | /* NOTE NOTE NOTE!! Not all sprintf implementations return number of
|
---|
| 918 | output characters */
|
---|
| 919 | (sprintf)(work, formatbuf, p->data.dnum);
|
---|
| 920 |
|
---|
| 921 | for(fptr=work; *fptr; fptr++)
|
---|
| 922 | OUTCHAR(*fptr);
|
---|
| 923 | }
|
---|
| 924 | break;
|
---|
| 925 |
|
---|
| 926 | case FORMAT_INTPTR:
|
---|
| 927 | /* Answer the count of characters written. */
|
---|
| 928 | #ifdef HAVE_LONG_LONG_TYPE
|
---|
| 929 | if(p->flags & FLAGS_LONGLONG)
|
---|
| 930 | *(LONG_LONG_TYPE *) p->data.ptr = (LONG_LONG_TYPE)done;
|
---|
| 931 | else
|
---|
| 932 | #endif
|
---|
| 933 | if(p->flags & FLAGS_LONG)
|
---|
| 934 | *(long *) p->data.ptr = (long)done;
|
---|
| 935 | else if(!(p->flags & FLAGS_SHORT))
|
---|
| 936 | *(int *) p->data.ptr = (int)done;
|
---|
| 937 | else
|
---|
| 938 | *(short *) p->data.ptr = (short)done;
|
---|
| 939 | break;
|
---|
| 940 |
|
---|
| 941 | default:
|
---|
| 942 | break;
|
---|
| 943 | }
|
---|
| 944 | f = *end++; /* goto end of %-code */
|
---|
| 945 |
|
---|
| 946 | }
|
---|
| 947 | return done;
|
---|
| 948 | }
|
---|
| 949 | #else
|
---|
| 950 | /*------------------------------------------------------------------------/
|
---|
| 951 | / Universal string handler for user console interface
|
---|
| 952 | /-------------------------------------------------------------------------/
|
---|
| 953 | /
|
---|
| 954 | / Copyright (C) 2011, ChaN, all right reserved.
|
---|
| 955 | /
|
---|
| 956 | / * This software is a free software and there is NO WARRANTY.
|
---|
| 957 | / * No restriction on use. You can use, modify and redistribute it for
|
---|
| 958 | / personal, non-profit or commercial products UNDER YOUR RESPONSIBILITY.
|
---|
| 959 | / * Redistributions of source code must retain the above copyright notice.
|
---|
| 960 | /
|
---|
| 961 | /-------------------------------------------------------------------------*/
|
---|
| 962 | static int dprintf_formatf(
|
---|
| 963 | void *data,
|
---|
| 964 | int(*stream)(int, FILE *),
|
---|
| 965 | const char *fmt,
|
---|
| 966 | va_list arp)
|
---|
| 967 | {
|
---|
| 968 | unsigned int r, i, j, w, f;
|
---|
| 969 | unsigned long v;
|
---|
| 970 | char s[16], c, d, *p;
|
---|
| 971 |
|
---|
| 972 | /* Number of characters written. */
|
---|
| 973 | int done = 0;
|
---|
| 974 |
|
---|
| 975 | for (;;) {
|
---|
| 976 | c = *fmt++; /* Get a char */
|
---|
| 977 | if (!c) break; /* End of format? */
|
---|
| 978 | if (c != '%') { /* Pass through it if not a % sequense */
|
---|
| 979 | OUTCHAR(c); continue;
|
---|
| 980 | }
|
---|
| 981 | f = 0;
|
---|
| 982 | c = *fmt++; /* Get first char of the sequense */
|
---|
| 983 | if (c == '0') { /* Flag: '0' padded */
|
---|
| 984 | f = 1; c = *fmt++;
|
---|
| 985 | }
|
---|
| 986 | else {
|
---|
| 987 | if (c == '-') { /* Flag: left justified */
|
---|
| 988 | f = 2; c = *fmt++;
|
---|
| 989 | }
|
---|
| 990 | }
|
---|
| 991 | for (w = 0; c >= '0' && c <= '9'; c = *fmt++) /* Minimum width */
|
---|
| 992 | w = w * 10 + c - '0';
|
---|
| 993 | if (c == 'l' || c == 'L') { /* Prefix: Size is long int */
|
---|
| 994 | f |= 4; c = *fmt++;
|
---|
| 995 | }
|
---|
| 996 | else if (c == 'h') { /* Prefix: Size is short int */
|
---|
| 997 | f |= 16; c = *fmt++;
|
---|
| 998 | }
|
---|
| 999 | if (!c) break; /* End of format? */
|
---|
| 1000 | d = c;
|
---|
| 1001 | if (d >= 'a') d -= 0x20;
|
---|
| 1002 | switch (d) { /* Type is... */
|
---|
| 1003 | case 'S': /* String */
|
---|
| 1004 | p = va_arg(arp, char*);
|
---|
| 1005 | for (j = 0; p[j]; j++);
|
---|
| 1006 | while (!(f & 2) && j++ < w) OUTCHAR(' ');
|
---|
| 1007 | for (; *p; p++)
|
---|
| 1008 | OUTCHAR(*p);
|
---|
| 1009 | while (j++ < w) OUTCHAR(' ');
|
---|
| 1010 | continue;
|
---|
| 1011 | case 'C': /* Character */
|
---|
| 1012 | OUTCHAR((char)va_arg(arp, int)); continue;
|
---|
| 1013 | case 'B': /* Binary */
|
---|
| 1014 | r = 2; break;
|
---|
| 1015 | case 'O': /* Octal */
|
---|
| 1016 | r = 8; break;
|
---|
| 1017 | case 'D': /* Signed decimal */
|
---|
| 1018 | case 'U': /* Unsigned decimal */
|
---|
| 1019 | r = 10; break;
|
---|
| 1020 | case 'X': /* Hexdecimal */
|
---|
| 1021 | r = 16; break;
|
---|
| 1022 | default: /* Unknown type (passthrough) */
|
---|
| 1023 | OUTCHAR(c); continue;
|
---|
| 1024 | }
|
---|
| 1025 |
|
---|
| 1026 | /* Get an argument and put it in numeral */
|
---|
| 1027 | v = (f & 4) ? va_arg(arp, long)
|
---|
| 1028 | : ((f & 16) ? ((d == 'D') ? (long)va_arg(arp, short) : (long)va_arg(arp, unsigned short))
|
---|
| 1029 | : ((d == 'D') ? (long)va_arg(arp, int) : (long)va_arg(arp, unsigned int)));
|
---|
| 1030 | if (d == 'D' && (v & 0x80000000)) {
|
---|
| 1031 | v = 0 - v;
|
---|
| 1032 | f |= 8;
|
---|
| 1033 | }
|
---|
| 1034 | i = 0;
|
---|
| 1035 | do {
|
---|
| 1036 | d = (char)(v % r); v /= r;
|
---|
| 1037 | if (d > 9) d += (c == 'x') ? 0x27 : 0x07;
|
---|
| 1038 | s[i++] = d + '0';
|
---|
| 1039 | } while (v && i < sizeof(s));
|
---|
| 1040 | if (f & 8) s[i++] = '-';
|
---|
| 1041 | j = i; d = (f & 1) ? '0' : ' ';
|
---|
| 1042 | while (!(f & 2) && j++ < w) OUTCHAR(d);
|
---|
| 1043 | do OUTCHAR(s[--i]); while (i);
|
---|
| 1044 | while (j++ < w) OUTCHAR(' ');
|
---|
| 1045 | }
|
---|
| 1046 | return done;
|
---|
| 1047 | }
|
---|
| 1048 | #endif
|
---|
| 1049 | /* fputc() look-alike */
|
---|
| 1050 | static int addbyter(int output, FILE *data)
|
---|
| 1051 | {
|
---|
| 1052 | struct nsprintf *infop=(struct nsprintf *)data;
|
---|
| 1053 | unsigned char outc = (unsigned char)output;
|
---|
| 1054 |
|
---|
| 1055 | if(infop->length < infop->max) {
|
---|
| 1056 | /* only do this if we haven't reached max length yet */
|
---|
| 1057 | infop->buffer[0] = outc; /* store */
|
---|
| 1058 | infop->buffer++; /* increase pointer */
|
---|
| 1059 | infop->length++; /* we are now one byte larger */
|
---|
| 1060 | return outc; /* fputc() returns like this on success */
|
---|
| 1061 | }
|
---|
| 1062 | return -1;
|
---|
| 1063 | }
|
---|
| 1064 |
|
---|
| 1065 | int curl_mvsnprintf(char *buffer, size_t maxlength, const char *format,
|
---|
| 1066 | va_list ap_save)
|
---|
| 1067 | {
|
---|
| 1068 | int retcode;
|
---|
| 1069 | struct nsprintf info;
|
---|
| 1070 |
|
---|
| 1071 | info.buffer = buffer;
|
---|
| 1072 | info.length = 0;
|
---|
| 1073 | info.max = maxlength;
|
---|
| 1074 |
|
---|
| 1075 | retcode = dprintf_formatf(&info, addbyter, format, ap_save);
|
---|
| 1076 | if(info.max) {
|
---|
| 1077 | /* we terminate this with a zero byte */
|
---|
| 1078 | if(info.max == info.length)
|
---|
| 1079 | /* we're at maximum, scrap the last letter */
|
---|
| 1080 | info.buffer[-1] = 0;
|
---|
| 1081 | else
|
---|
| 1082 | info.buffer[0] = 0;
|
---|
| 1083 | }
|
---|
| 1084 | return retcode;
|
---|
| 1085 | }
|
---|
| 1086 |
|
---|
| 1087 | int curl_msnprintf(char *buffer, size_t maxlength, const char *format, ...)
|
---|
| 1088 | {
|
---|
| 1089 | int retcode;
|
---|
| 1090 | va_list ap_save; /* argument pointer */
|
---|
| 1091 | va_start(ap_save, format);
|
---|
| 1092 | retcode = curl_mvsnprintf(buffer, maxlength, format, ap_save);
|
---|
| 1093 | va_end(ap_save);
|
---|
| 1094 | return retcode;
|
---|
| 1095 | }
|
---|
| 1096 |
|
---|
| 1097 | /* fputc() look-alike */
|
---|
| 1098 | static int alloc_addbyter(int output, FILE *data)
|
---|
| 1099 | {
|
---|
| 1100 | struct asprintf *infop=(struct asprintf *)data;
|
---|
| 1101 | unsigned char outc = (unsigned char)output;
|
---|
| 1102 |
|
---|
| 1103 | if(!infop->buffer) {
|
---|
| 1104 | infop->buffer = malloc(32);
|
---|
| 1105 | if(!infop->buffer) {
|
---|
| 1106 | infop->fail = 1;
|
---|
| 1107 | return -1; /* fail */
|
---|
| 1108 | }
|
---|
| 1109 | infop->alloc = 32;
|
---|
| 1110 | infop->len =0;
|
---|
| 1111 | }
|
---|
| 1112 | else if(infop->len+1 >= infop->alloc) {
|
---|
| 1113 | char *newptr;
|
---|
| 1114 |
|
---|
| 1115 | newptr = realloc(infop->buffer, infop->alloc*2);
|
---|
| 1116 |
|
---|
| 1117 | if(!newptr) {
|
---|
| 1118 | infop->fail = 1;
|
---|
| 1119 | return -1; /* fail */
|
---|
| 1120 | }
|
---|
| 1121 | infop->buffer = newptr;
|
---|
| 1122 | infop->alloc *= 2;
|
---|
| 1123 | }
|
---|
| 1124 |
|
---|
| 1125 | infop->buffer[ infop->len ] = outc;
|
---|
| 1126 |
|
---|
| 1127 | infop->len++;
|
---|
| 1128 |
|
---|
| 1129 | return outc; /* fputc() returns like this on success */
|
---|
| 1130 | }
|
---|
| 1131 |
|
---|
| 1132 | char *curl_maprintf(const char *format, ...)
|
---|
| 1133 | {
|
---|
| 1134 | va_list ap_save; /* argument pointer */
|
---|
| 1135 | int retcode;
|
---|
| 1136 | struct asprintf info;
|
---|
| 1137 |
|
---|
| 1138 | info.buffer = NULL;
|
---|
| 1139 | info.len = 0;
|
---|
| 1140 | info.alloc = 0;
|
---|
| 1141 | info.fail = 0;
|
---|
| 1142 |
|
---|
| 1143 | va_start(ap_save, format);
|
---|
| 1144 | retcode = dprintf_formatf(&info, alloc_addbyter, format, ap_save);
|
---|
| 1145 | va_end(ap_save);
|
---|
| 1146 | if((-1 == retcode) || info.fail) {
|
---|
| 1147 | if(info.alloc)
|
---|
| 1148 | free(info.buffer);
|
---|
| 1149 | return NULL;
|
---|
| 1150 | }
|
---|
| 1151 | if(info.alloc) {
|
---|
| 1152 | info.buffer[info.len] = 0; /* we terminate this with a zero byte */
|
---|
| 1153 | return info.buffer;
|
---|
| 1154 | }
|
---|
| 1155 | else
|
---|
| 1156 | return strdup("");
|
---|
| 1157 | }
|
---|
| 1158 |
|
---|
| 1159 | char *curl_mvaprintf(const char *format, va_list ap_save)
|
---|
| 1160 | {
|
---|
| 1161 | int retcode;
|
---|
| 1162 | struct asprintf info;
|
---|
| 1163 |
|
---|
| 1164 | info.buffer = NULL;
|
---|
| 1165 | info.len = 0;
|
---|
| 1166 | info.alloc = 0;
|
---|
| 1167 | info.fail = 0;
|
---|
| 1168 |
|
---|
| 1169 | retcode = dprintf_formatf(&info, alloc_addbyter, format, ap_save);
|
---|
| 1170 | if((-1 == retcode) || info.fail) {
|
---|
| 1171 | if(info.alloc)
|
---|
| 1172 | free(info.buffer);
|
---|
| 1173 | return NULL;
|
---|
| 1174 | }
|
---|
| 1175 |
|
---|
| 1176 | if(info.alloc) {
|
---|
| 1177 | info.buffer[info.len] = 0; /* we terminate this with a zero byte */
|
---|
| 1178 | return info.buffer;
|
---|
| 1179 | }
|
---|
| 1180 | else
|
---|
| 1181 | return strdup("");
|
---|
| 1182 | }
|
---|
| 1183 |
|
---|
| 1184 | static int storebuffer(int output, FILE *data)
|
---|
| 1185 | {
|
---|
| 1186 | char **buffer = (char **)data;
|
---|
| 1187 | unsigned char outc = (unsigned char)output;
|
---|
| 1188 | **buffer = outc;
|
---|
| 1189 | (*buffer)++;
|
---|
| 1190 | return outc; /* act like fputc() ! */
|
---|
| 1191 | }
|
---|
| 1192 |
|
---|
| 1193 | int curl_msprintf(char *buffer, const char *format, ...)
|
---|
| 1194 | {
|
---|
| 1195 | va_list ap_save; /* argument pointer */
|
---|
| 1196 | int retcode;
|
---|
| 1197 | va_start(ap_save, format);
|
---|
| 1198 | retcode = dprintf_formatf(&buffer, storebuffer, format, ap_save);
|
---|
| 1199 | va_end(ap_save);
|
---|
| 1200 | *buffer=0; /* we terminate this with a zero byte */
|
---|
| 1201 | return retcode;
|
---|
| 1202 | }
|
---|
| 1203 |
|
---|
| 1204 | int curl_mprintf(const char *format, ...)
|
---|
| 1205 | {
|
---|
| 1206 | int retcode;
|
---|
| 1207 | va_list ap_save; /* argument pointer */
|
---|
| 1208 | va_start(ap_save, format);
|
---|
| 1209 |
|
---|
| 1210 | retcode = dprintf_formatf(stdout, fputc, format, ap_save);
|
---|
| 1211 | va_end(ap_save);
|
---|
| 1212 | return retcode;
|
---|
| 1213 | }
|
---|
| 1214 |
|
---|
| 1215 | int curl_mfprintf(FILE *whereto, const char *format, ...)
|
---|
| 1216 | {
|
---|
| 1217 | int retcode;
|
---|
| 1218 | va_list ap_save; /* argument pointer */
|
---|
| 1219 | va_start(ap_save, format);
|
---|
| 1220 | retcode = dprintf_formatf(whereto, fputc, format, ap_save);
|
---|
| 1221 | va_end(ap_save);
|
---|
| 1222 | return retcode;
|
---|
| 1223 | }
|
---|
| 1224 |
|
---|
| 1225 | int curl_mvsprintf(char *buffer, const char *format, va_list ap_save)
|
---|
| 1226 | {
|
---|
| 1227 | int retcode;
|
---|
| 1228 | retcode = dprintf_formatf(&buffer, storebuffer, format, ap_save);
|
---|
| 1229 | *buffer=0; /* we terminate this with a zero byte */
|
---|
| 1230 | return retcode;
|
---|
| 1231 | }
|
---|
| 1232 |
|
---|
| 1233 | int curl_mvprintf(const char *format, va_list ap_save)
|
---|
| 1234 | {
|
---|
| 1235 | return dprintf_formatf(stdout, fputc, format, ap_save);
|
---|
| 1236 | }
|
---|
| 1237 |
|
---|
| 1238 | int curl_mvfprintf(FILE *whereto, const char *format, va_list ap_save)
|
---|
| 1239 | {
|
---|
| 1240 | return dprintf_formatf(whereto, fputc, format, ap_save);
|
---|
| 1241 | }
|
---|