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998f085297
* common/estream-printf.c (pr_string): Take care of non-nul terminated strings. -- Resolved conflicts: common/estream-printf.c - white spaces
1791 lines
48 KiB
C
1791 lines
48 KiB
C
/* estream-printf.c - Versatile C-99 compliant printf formatting
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* Copyright (C) 2007, 2008, 2009 g10 Code GmbH
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*
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* This file is part of Libestream.
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*
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* Libestream is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License,
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* or (at your option) any later version.
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*
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* Libestream is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Libestream; if not, see <http://www.gnu.org/licenses/>.
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*/
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/* Required autoconf tests:
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AC_TYPE_LONG_LONG_INT defines HAVE_LONG_LONG_INT
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AC_TYPE_LONG_DOUBLE defines HAVE_LONG_DOUBLE
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AC_TYPE_INTMAX_T defines HAVE_INTMAX_T
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AC_TYPE_UINTMAX_T defines HAVE_UINTMAX_T
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AC_CHECK_TYPES([ptrdiff_t]) defines HAVE_PTRDIFF_T
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||
AC_CHECK_SIZEOF([unsigned long]) defines SIZEOF_UNSIGNED_LONG
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AC_CHECK_SIZEOF([void *]) defines SIZEOF_VOID_P
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HAVE_LANGINFO_THOUSANDS_SEP
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Note that the file estream.m4 provides the autoconf macro
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ESTREAM_PRINTF_INIT which runs all required checks.
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See estream-printf.h for ways to tune this code.
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Missing stuff: wchar and wint_t
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thousands_sep in pr_float.
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <stddef.h>
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#include <assert.h>
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#if defined(HAVE_INTMAX_T) || defined(HAVE_UINTMAX_T)
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# ifdef HAVE_STDINT_H
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# include <stdint.h>
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# endif
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#endif
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#ifdef HAVE_LANGINFO_THOUSANDS_SEP
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#include <langinfo.h>
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#endif
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#ifdef _ESTREAM_PRINTF_EXTRA_INCLUDE
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# include _ESTREAM_PRINTF_EXTRA_INCLUDE
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#endif
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#include "estream-printf.h"
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/* #define DEBUG 1 */
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/* Allow redefinition of asprintf used malloc functions. */
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#if defined(_ESTREAM_PRINTF_MALLOC)
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#define my_printf_malloc(a) _ESTREAM_PRINTF_MALLOC((a))
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#else
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#define my_printf_malloc(a) malloc((a))
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#endif
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#if defined(_ESTREAM_PRINTF_FREE)
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#define my_printf_free(a) _ESTREAM_PRINTF_FREE((a))
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#else
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#define my_printf_free(a) free((a))
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#endif
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/* Calculate array dimension. */
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#ifndef DIM
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#define DIM(array) (sizeof (array) / sizeof (*array))
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#endif
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/* We allow for that many args without requiring malloced memory. */
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#define DEFAULT_MAX_ARGSPECS 5
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/* We allow for that many values without requiring malloced memory. */
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#define DEFAULT_MAX_VALUES 8
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||
|
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/* We allocate this many new array argspec elements each time. */
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||
#define ARGSPECS_BUMP_VALUE 10
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||
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||
/* Special values for the field width and the precision. */
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#define NO_FIELD_VALUE (-1)
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#define STAR_FIELD_VALUE (-2)
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/* Bit valuues used for the conversion flags. */
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#define FLAG_GROUPING 1
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#define FLAG_LEFT_JUST 2
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#define FLAG_PLUS_SIGN 4
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#define FLAG_SPACE_PLUS 8
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#define FLAG_ALT_CONV 16
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#define FLAG_ZERO_PAD 32
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|
||
/* Constants used the length modifiers. */
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typedef enum
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{
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LENMOD_NONE = 0,
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LENMOD_CHAR, /* "hh" */
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LENMOD_SHORT, /* "h" */
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LENMOD_LONG, /* "l" */
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LENMOD_LONGLONG, /* "ll" */
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LENMOD_INTMAX, /* "j" */
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LENMOD_SIZET, /* "z" */
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LENMOD_PTRDIFF, /* "t" */
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LENMOD_LONGDBL /* "L" */
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} lenmod_t;
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|
||
/* All the conversion specifiers. */
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typedef enum
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||
{
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CONSPEC_UNKNOWN = 0,
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CONSPEC_DECIMAL,
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CONSPEC_OCTAL,
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CONSPEC_UNSIGNED,
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CONSPEC_HEX,
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||
CONSPEC_HEX_UP,
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||
CONSPEC_FLOAT,
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CONSPEC_FLOAT_UP,
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CONSPEC_EXP,
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CONSPEC_EXP_UP,
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||
CONSPEC_F_OR_G,
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||
CONSPEC_F_OR_G_UP,
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CONSPEC_HEX_EXP,
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CONSPEC_HEX_EXP_UP,
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CONSPEC_CHAR,
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||
CONSPEC_STRING,
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||
CONSPEC_POINTER,
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||
CONSPEC_STRERROR,
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CONSPEC_BYTES_SO_FAR
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} conspec_t;
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/* Constants describing all the suppoorted types. Note that we list
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all the types we know about even if certain types are not available
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on this system. */
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typedef enum
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{
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VALTYPE_UNSUPPORTED = 0, /* Artificial type for error detection. */
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VALTYPE_CHAR,
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VALTYPE_SCHAR,
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VALTYPE_UCHAR,
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VALTYPE_SHORT,
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VALTYPE_USHORT,
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VALTYPE_INT,
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||
VALTYPE_UINT,
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||
VALTYPE_LONG,
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||
VALTYPE_ULONG,
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VALTYPE_LONGLONG,
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VALTYPE_ULONGLONG,
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VALTYPE_DOUBLE,
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||
VALTYPE_LONGDOUBLE,
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||
VALTYPE_STRING,
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VALTYPE_INTMAX,
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VALTYPE_UINTMAX,
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||
VALTYPE_SIZE,
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||
VALTYPE_PTRDIFF,
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VALTYPE_POINTER,
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VALTYPE_CHAR_PTR,
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||
VALTYPE_SCHAR_PTR,
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||
VALTYPE_SHORT_PTR,
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||
VALTYPE_INT_PTR,
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VALTYPE_LONG_PTR,
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||
VALTYPE_LONGLONG_PTR,
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||
VALTYPE_INTMAX_PTR,
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VALTYPE_SIZE_PTR,
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VALTYPE_PTRDIFF_PTR
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} valtype_t;
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||
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/* A union used to store the actual values. */
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typedef union
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{
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char a_char;
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signed char a_schar;
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unsigned char a_uchar;
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short a_short;
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unsigned short a_ushort;
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int a_int;
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unsigned int a_uint;
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||
long int a_long;
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unsigned long int a_ulong;
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||
#ifdef HAVE_LONG_LONG_INT
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long long int a_longlong;
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unsigned long long int a_ulonglong;
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||
#endif
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double a_double;
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#ifdef HAVE_LONG_DOUBLE
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long double a_longdouble;
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#endif
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const char *a_string;
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#ifdef HAVE_INTMAX_T
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intmax_t a_intmax;
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#endif
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#ifdef HAVE_UINTMAX_T
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intmax_t a_uintmax;
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#endif
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size_t a_size;
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#ifdef HAVE_PTRDIFF_T
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ptrdiff_t a_ptrdiff;
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#endif
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void *a_void_ptr;
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char *a_char_ptr;
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signed char *a_schar_ptr;
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short *a_short_ptr;
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int *a_int_ptr;
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long *a_long_ptr;
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#ifdef HAVE_LONG_LONG_INT
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long long int *a_longlong_ptr;
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#endif
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#ifdef HAVE_INTMAX_T
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intmax_t *a_intmax_ptr;
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#endif
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size_t *a_size_ptr;
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#ifdef HAVE_PTRDIFF_T
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ptrdiff_t *a_ptrdiff_ptr;
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#endif
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} value_t;
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/* An object used to keep track of a format option and arguments. */
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struct argspec_s
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{
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size_t length; /* The length of these args including the percent. */
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unsigned int flags; /* The conversion flags (bits defined by FLAG_foo). */
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int width; /* The field width. */
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int precision; /* The precision. */
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lenmod_t lenmod; /* The length modifier. */
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conspec_t conspec; /* The conversion specifier. */
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int arg_pos; /* The position of the argument. This one may
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be -1 to indicate that no value is expected
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(e.g. for "%m"). */
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int width_pos; /* The position of the argument for a field
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||
width star's value. 0 for not used. */
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int precision_pos; /* The position of the argument for the a
|
||
precision star's value. 0 for not used. */
|
||
valtype_t vt; /* The type of the corresponding argument. */
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||
};
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||
typedef struct argspec_s *argspec_t;
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||
|
||
/* An object to build up a table of values and their types. */
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||
struct valueitem_s
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||
{
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||
valtype_t vt; /* The type of the value. */
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||
value_t value; /* The value. */
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||
};
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||
typedef struct valueitem_s *valueitem_t;
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||
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||
|
||
#ifdef DEBUG
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||
static void
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||
dump_argspecs (argspec_t arg, size_t argcount)
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||
{
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||
int idx;
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||
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for (idx=0; argcount; argcount--, arg++, idx++)
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fprintf (stderr,
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||
"%2d: len=%u flags=%u width=%d prec=%d mod=%d "
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"con=%d vt=%d pos=%d-%d-%d\n",
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idx,
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(unsigned int)arg->length,
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||
arg->flags,
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||
arg->width,
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||
arg->precision,
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||
arg->lenmod,
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||
arg->conspec,
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||
arg->vt,
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arg->arg_pos,
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||
arg->width_pos,
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||
arg->precision_pos);
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||
}
|
||
#endif /*DEBUG*/
|
||
|
||
|
||
/* Set the vt field for ARG. */
|
||
static void
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||
compute_type (argspec_t arg)
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||
{
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||
switch (arg->conspec)
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{
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||
case CONSPEC_UNKNOWN:
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arg->vt = VALTYPE_UNSUPPORTED;
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break;
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||
|
||
case CONSPEC_DECIMAL:
|
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switch (arg->lenmod)
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{
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case LENMOD_CHAR: arg->vt = VALTYPE_SCHAR; break;
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case LENMOD_SHORT: arg->vt = VALTYPE_SHORT; break;
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case LENMOD_LONG: arg->vt = VALTYPE_LONG; break;
|
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case LENMOD_LONGLONG: arg->vt = VALTYPE_LONGLONG; break;
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case LENMOD_INTMAX: arg->vt = VALTYPE_INTMAX; break;
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case LENMOD_SIZET: arg->vt = VALTYPE_SIZE; break;
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case LENMOD_PTRDIFF: arg->vt = VALTYPE_PTRDIFF; break;
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default: arg->vt = VALTYPE_INT; break;
|
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}
|
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break;
|
||
|
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case CONSPEC_OCTAL:
|
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case CONSPEC_UNSIGNED:
|
||
case CONSPEC_HEX:
|
||
case CONSPEC_HEX_UP:
|
||
switch (arg->lenmod)
|
||
{
|
||
case LENMOD_CHAR: arg->vt = VALTYPE_UCHAR; break;
|
||
case LENMOD_SHORT: arg->vt = VALTYPE_USHORT; break;
|
||
case LENMOD_LONG: arg->vt = VALTYPE_ULONG; break;
|
||
case LENMOD_LONGLONG: arg->vt = VALTYPE_ULONGLONG; break;
|
||
case LENMOD_INTMAX: arg->vt = VALTYPE_UINTMAX; break;
|
||
case LENMOD_SIZET: arg->vt = VALTYPE_SIZE; break;
|
||
case LENMOD_PTRDIFF: arg->vt = VALTYPE_PTRDIFF; break;
|
||
default: arg->vt = VALTYPE_UINT; break;
|
||
}
|
||
break;
|
||
|
||
case CONSPEC_FLOAT:
|
||
case CONSPEC_FLOAT_UP:
|
||
case CONSPEC_EXP:
|
||
case CONSPEC_EXP_UP:
|
||
case CONSPEC_F_OR_G:
|
||
case CONSPEC_F_OR_G_UP:
|
||
case CONSPEC_HEX_EXP:
|
||
case CONSPEC_HEX_EXP_UP:
|
||
switch (arg->lenmod)
|
||
{
|
||
case LENMOD_LONGDBL: arg->vt = VALTYPE_LONGDOUBLE; break;
|
||
case LENMOD_LONG: arg->vt = VALTYPE_DOUBLE; break;
|
||
default: arg->vt = VALTYPE_DOUBLE; break;
|
||
}
|
||
break;
|
||
|
||
case CONSPEC_CHAR:
|
||
arg->vt = VALTYPE_INT;
|
||
break;
|
||
|
||
case CONSPEC_STRING:
|
||
arg->vt = VALTYPE_STRING;
|
||
break;
|
||
|
||
case CONSPEC_POINTER:
|
||
arg->vt = VALTYPE_POINTER;
|
||
break;
|
||
|
||
case CONSPEC_STRERROR:
|
||
arg->vt = VALTYPE_STRING;
|
||
break;
|
||
|
||
case CONSPEC_BYTES_SO_FAR:
|
||
switch (arg->lenmod)
|
||
{
|
||
case LENMOD_CHAR: arg->vt = VALTYPE_SCHAR_PTR; break;
|
||
case LENMOD_SHORT: arg->vt = VALTYPE_SHORT_PTR; break;
|
||
case LENMOD_LONG: arg->vt = VALTYPE_LONG_PTR; break;
|
||
case LENMOD_LONGLONG: arg->vt = VALTYPE_LONGLONG_PTR; break;
|
||
case LENMOD_INTMAX: arg->vt = VALTYPE_INTMAX_PTR; break;
|
||
case LENMOD_SIZET: arg->vt = VALTYPE_SIZE_PTR; break;
|
||
case LENMOD_PTRDIFF: arg->vt = VALTYPE_PTRDIFF_PTR; break;
|
||
default: arg->vt = VALTYPE_INT_PTR; break;
|
||
}
|
||
break;
|
||
|
||
}
|
||
}
|
||
|
||
|
||
|
||
/* Parse the FORMAT string and populate the specification array stored
|
||
at the address ARGSPECS_ADDR. The caller has provided enough space
|
||
to store up to MAX_ARGSPECS in that buffer. The function may
|
||
however ignore the provided buffer and malloc a larger one. On
|
||
success the addrrss of that larger buffer will be stored at
|
||
ARGSPECS_ADDR. The actual number of specifications will be
|
||
returned at R_ARGSPECS_COUNT. */
|
||
static int
|
||
parse_format (const char *format,
|
||
argspec_t *argspecs_addr, size_t max_argspecs,
|
||
size_t *r_argspecs_count)
|
||
{
|
||
const char *s;
|
||
argspec_t argspecs = *argspecs_addr;
|
||
argspec_t arg;
|
||
size_t argcount = 0;
|
||
|
||
if (!format)
|
||
goto leave_einval;
|
||
|
||
for (; *format; format++)
|
||
{
|
||
unsigned int flags;
|
||
int width, precision;
|
||
lenmod_t lenmod;
|
||
conspec_t conspec;
|
||
int arg_pos, width_pos, precision_pos;
|
||
|
||
if (*format != '%')
|
||
continue;
|
||
s = ++format;
|
||
if (!*s)
|
||
goto leave_einval;
|
||
if (*s == '%')
|
||
continue; /* Just a quoted percent. */
|
||
|
||
/* First check whether there is a positional argument. */
|
||
arg_pos = 0; /* No positional argument given. */
|
||
if (*s >= '1' && *s <= '9')
|
||
{
|
||
const char *save_s = s;
|
||
|
||
arg_pos = (*s++ - '0');
|
||
for (; *s >= '0' && *s <= '9'; s++)
|
||
arg_pos = 10*arg_pos + (*s - '0');
|
||
if (arg_pos < 0)
|
||
goto leave_einval; /* Overflow during conversion. */
|
||
if (*s == '$')
|
||
s++;
|
||
else
|
||
{
|
||
arg_pos = 0;
|
||
s = save_s;
|
||
}
|
||
}
|
||
|
||
/* Parse the flags. */
|
||
flags = 0;
|
||
for ( ; *s; s++)
|
||
{
|
||
switch (*s)
|
||
{
|
||
case '\'': flags |= FLAG_GROUPING; break;
|
||
case '-': flags |= FLAG_LEFT_JUST; break;
|
||
case '+': flags |= FLAG_PLUS_SIGN; break;
|
||
case ' ': flags |= FLAG_SPACE_PLUS; break;
|
||
case '#': flags |= FLAG_ALT_CONV; break;
|
||
case '0': flags |= FLAG_ZERO_PAD; break;
|
||
default:
|
||
goto flags_parsed;
|
||
}
|
||
}
|
||
flags_parsed:
|
||
|
||
/* Parse the field width. */
|
||
width_pos = 0;
|
||
if (*s == '*')
|
||
{
|
||
width = STAR_FIELD_VALUE;
|
||
s++;
|
||
/* If we have a positional argument, another one might also
|
||
be used to give the position of the star's value. */
|
||
if (arg_pos && *s >= '1' && *s <= '9')
|
||
{
|
||
width_pos = (*s++ - '0');
|
||
for (; *s >= '0' && *s <= '9'; s++)
|
||
width_pos = 10*width_pos + (*s - '0');
|
||
if (width_pos < 1)
|
||
goto leave_einval; /* Overflow during conversion. */
|
||
if (*s != '$')
|
||
goto leave_einval; /* Not followed by $. */
|
||
s++;
|
||
}
|
||
}
|
||
else if ( *s >= '0' && *s <= '9')
|
||
{
|
||
width = (*s++ - '0');
|
||
for (; *s >= '0' && *s <= '9'; s++)
|
||
{
|
||
if (!width && *s == '0')
|
||
goto leave_einval; /* Leading zeroes are not allowed.
|
||
Fixme: check what other
|
||
implementations do. */
|
||
width = 10*width + (*s - '0');
|
||
}
|
||
if (width < 0)
|
||
goto leave_einval; /* Overflow during conversion. */
|
||
}
|
||
else
|
||
width = NO_FIELD_VALUE;
|
||
|
||
/* Parse the precision. */
|
||
precision_pos = 0;
|
||
precision = NO_FIELD_VALUE;
|
||
if (*s == '.')
|
||
{
|
||
int ignore_value = (s[1] == '-');
|
||
|
||
s++;
|
||
if (*s == '*')
|
||
{
|
||
precision = STAR_FIELD_VALUE;
|
||
s++;
|
||
/* If we have a positional argument, another one might also
|
||
be used to give the position of the star's value. */
|
||
if (arg_pos && *s >= '1' && *s <= '9')
|
||
{
|
||
precision_pos = (*s++ - '0');
|
||
for (; *s >= '0' && *s <= '9'; s++)
|
||
precision_pos = 10*precision_pos + (*s - '0');
|
||
if (precision_pos < 1)
|
||
goto leave_einval; /* Overflow during conversion. */
|
||
if (*s != '$')
|
||
goto leave_einval; /* Not followed by $. */
|
||
s++;
|
||
}
|
||
}
|
||
else if ( *s >= '0' && *s <= '9')
|
||
{
|
||
precision = (*s++ - '0');
|
||
for (; *s >= '0' && *s <= '9'; s++)
|
||
{
|
||
if (!precision && *s == '0')
|
||
goto leave_einval; /* Leading zeroes are not allowed.
|
||
Fixme: check what other
|
||
implementations do. */
|
||
precision = 10*precision + (*s - '0');
|
||
}
|
||
if (precision < 0)
|
||
goto leave_einval; /* Overflow during conversion. */
|
||
}
|
||
else
|
||
precision = 0;
|
||
if (ignore_value)
|
||
precision = NO_FIELD_VALUE;
|
||
}
|
||
|
||
/* Parse the length modifiers. */
|
||
switch (*s)
|
||
{
|
||
case 'h':
|
||
if (s[1] == 'h')
|
||
{
|
||
lenmod = LENMOD_CHAR;
|
||
s++;
|
||
}
|
||
else
|
||
lenmod = LENMOD_SHORT;
|
||
s++;
|
||
break;
|
||
case 'l':
|
||
if (s[1] == 'l')
|
||
{
|
||
lenmod = LENMOD_LONGLONG;
|
||
s++;
|
||
}
|
||
else
|
||
lenmod = LENMOD_LONG;
|
||
s++;
|
||
break;
|
||
case 'j': lenmod = LENMOD_INTMAX; s++; break;
|
||
case 'z': lenmod = LENMOD_SIZET; s++; break;
|
||
case 't': lenmod = LENMOD_PTRDIFF; s++; break;
|
||
case 'L': lenmod = LENMOD_LONGDBL; s++; break;
|
||
default: lenmod = LENMOD_NONE; break;
|
||
}
|
||
|
||
/* Parse the conversion specifier. */
|
||
switch (*s)
|
||
{
|
||
case 'd':
|
||
case 'i': conspec = CONSPEC_DECIMAL; break;
|
||
case 'o': conspec = CONSPEC_OCTAL; break;
|
||
case 'u': conspec = CONSPEC_UNSIGNED; break;
|
||
case 'x': conspec = CONSPEC_HEX; break;
|
||
case 'X': conspec = CONSPEC_HEX_UP; break;
|
||
case 'f': conspec = CONSPEC_FLOAT; break;
|
||
case 'F': conspec = CONSPEC_FLOAT_UP; break;
|
||
case 'e': conspec = CONSPEC_EXP; break;
|
||
case 'E': conspec = CONSPEC_EXP_UP; break;
|
||
case 'g': conspec = CONSPEC_F_OR_G; break;
|
||
case 'G': conspec = CONSPEC_F_OR_G_UP; break;
|
||
case 'a': conspec = CONSPEC_HEX_EXP; break;
|
||
case 'A': conspec = CONSPEC_HEX_EXP_UP; break;
|
||
case 'c': conspec = CONSPEC_CHAR; break;
|
||
case 's': conspec = CONSPEC_STRING; break;
|
||
case 'p': conspec = CONSPEC_POINTER; break;
|
||
case 'n': conspec = CONSPEC_BYTES_SO_FAR; break;
|
||
case 'C': conspec = CONSPEC_CHAR; lenmod = LENMOD_LONG; break;
|
||
case 'S': conspec = CONSPEC_STRING; lenmod = LENMOD_LONG; break;
|
||
case 'm': conspec = CONSPEC_STRERROR; arg_pos = -1; break;
|
||
default: conspec = CONSPEC_UNKNOWN;
|
||
}
|
||
|
||
/* Save the args. */
|
||
if (argcount >= max_argspecs)
|
||
{
|
||
/* We either need to allocate a new array instead of the
|
||
caller provided one or realloc the array. Instead of
|
||
using realloc we allocate a new one and release the
|
||
original one then. */
|
||
size_t n, newmax;
|
||
argspec_t newarg;
|
||
|
||
newmax = max_argspecs + ARGSPECS_BUMP_VALUE;
|
||
if (newmax <= max_argspecs)
|
||
goto leave_einval; /* Too many arguments. */
|
||
newarg = calloc (newmax, sizeof *newarg);
|
||
if (!newarg)
|
||
goto leave;
|
||
for (n=0; n < argcount; n++)
|
||
newarg[n] = argspecs[n];
|
||
if (argspecs != *argspecs_addr)
|
||
free (argspecs);
|
||
argspecs = newarg;
|
||
max_argspecs = newmax;
|
||
}
|
||
|
||
arg = argspecs + argcount;
|
||
arg->length = s - format + 2;
|
||
arg->flags = flags;
|
||
arg->width = width;
|
||
arg->precision = precision;
|
||
arg->lenmod = lenmod;
|
||
arg->conspec = conspec;
|
||
arg->arg_pos = arg_pos;
|
||
arg->width_pos = width_pos;
|
||
arg->precision_pos = precision_pos;
|
||
compute_type (arg);
|
||
argcount++;
|
||
format = s;
|
||
}
|
||
|
||
*argspecs_addr = argspecs;
|
||
*r_argspecs_count = argcount;
|
||
return 0; /* Success. */
|
||
|
||
leave_einval:
|
||
errno = EINVAL;
|
||
leave:
|
||
if (argspecs != *argspecs_addr)
|
||
free (argspecs);
|
||
*argspecs_addr = NULL;
|
||
return -1;
|
||
}
|
||
|
||
|
||
/* This function reads all the values as specified by VALUETABLE into
|
||
VALUETABLE. The values are expected in VAARGS. The function
|
||
returns -1 if a specified type is not supported. */
|
||
static int
|
||
read_values (valueitem_t valuetable, size_t valuetable_len, va_list vaargs)
|
||
{
|
||
int validx;
|
||
|
||
for (validx=0; validx < valuetable_len; validx++)
|
||
{
|
||
value_t *value = &valuetable[validx].value;
|
||
valtype_t vt = valuetable[validx].vt;
|
||
|
||
switch (vt)
|
||
{
|
||
case VALTYPE_CHAR: value->a_char = va_arg (vaargs, int); break;
|
||
case VALTYPE_CHAR_PTR:
|
||
value->a_char_ptr = va_arg (vaargs, char *);
|
||
break;
|
||
case VALTYPE_SCHAR: value->a_schar = va_arg (vaargs, int); break;
|
||
case VALTYPE_SCHAR_PTR:
|
||
value->a_schar_ptr = va_arg (vaargs, signed char *);
|
||
break;
|
||
case VALTYPE_UCHAR: value->a_uchar = va_arg (vaargs, int); break;
|
||
case VALTYPE_SHORT: value->a_short = va_arg (vaargs, int); break;
|
||
case VALTYPE_USHORT: value->a_ushort = va_arg (vaargs, int); break;
|
||
case VALTYPE_SHORT_PTR:
|
||
value->a_short_ptr = va_arg (vaargs, short *);
|
||
break;
|
||
case VALTYPE_INT:
|
||
value->a_int = va_arg (vaargs, int);
|
||
break;
|
||
case VALTYPE_INT_PTR:
|
||
value->a_int_ptr = va_arg (vaargs, int *);
|
||
break;
|
||
case VALTYPE_UINT:
|
||
value->a_uint = va_arg (vaargs, unsigned int);
|
||
break;
|
||
case VALTYPE_LONG:
|
||
value->a_long = va_arg (vaargs, long);
|
||
break;
|
||
case VALTYPE_ULONG:
|
||
value->a_ulong = va_arg (vaargs, unsigned long);
|
||
break;
|
||
case VALTYPE_LONG_PTR:
|
||
value->a_long_ptr = va_arg (vaargs, long *);
|
||
break;
|
||
#ifdef HAVE_LONG_LONG_INT
|
||
case VALTYPE_LONGLONG:
|
||
value->a_longlong = va_arg (vaargs, long long int);
|
||
break;
|
||
case VALTYPE_ULONGLONG:
|
||
value->a_ulonglong = va_arg (vaargs, unsigned long long int);
|
||
break;
|
||
case VALTYPE_LONGLONG_PTR:
|
||
value->a_longlong_ptr = va_arg (vaargs, long long *);
|
||
break;
|
||
#endif
|
||
case VALTYPE_DOUBLE:
|
||
value->a_double = va_arg (vaargs, double);
|
||
break;
|
||
#ifdef HAVE_LONG_DOUBLE
|
||
case VALTYPE_LONGDOUBLE:
|
||
value->a_longdouble = va_arg (vaargs, long double);
|
||
break;
|
||
#endif
|
||
case VALTYPE_STRING:
|
||
value->a_string = va_arg (vaargs, const char *);
|
||
break;
|
||
case VALTYPE_POINTER:
|
||
value->a_void_ptr = va_arg (vaargs, void *);
|
||
break;
|
||
#ifdef HAVE_INTMAX_T
|
||
case VALTYPE_INTMAX:
|
||
value->a_intmax = va_arg (vaargs, intmax_t);
|
||
break;
|
||
case VALTYPE_INTMAX_PTR:
|
||
value->a_intmax_ptr = va_arg (vaargs, intmax_t *);
|
||
break;
|
||
#endif
|
||
#ifdef HAVE_UINTMAX_T
|
||
case VALTYPE_UINTMAX:
|
||
value->a_uintmax = va_arg (vaargs, uintmax_t);
|
||
break;
|
||
#endif
|
||
case VALTYPE_SIZE:
|
||
value->a_size = va_arg (vaargs, size_t);
|
||
break;
|
||
case VALTYPE_SIZE_PTR:
|
||
value->a_size_ptr = va_arg (vaargs, size_t *);
|
||
break;
|
||
#ifdef HAVE_PTRDIFF_T
|
||
case VALTYPE_PTRDIFF:
|
||
value->a_ptrdiff = va_arg (vaargs, ptrdiff_t);
|
||
break;
|
||
case VALTYPE_PTRDIFF_PTR:
|
||
value->a_ptrdiff_ptr = va_arg (vaargs, ptrdiff_t *);
|
||
break;
|
||
#endif
|
||
default: /* Unsupported type. */
|
||
return -1;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
/* Output COUNT padding characters PADCHAR and update NBYTES by the
|
||
number of bytes actually written. */
|
||
static int
|
||
pad_out (estream_printf_out_t outfnc, void *outfncarg,
|
||
int padchar, int count, size_t *nbytes)
|
||
{
|
||
char buf[32];
|
||
size_t n;
|
||
int rc;
|
||
|
||
while (count > 0)
|
||
{
|
||
n = (count <= sizeof buf)? count : sizeof buf;
|
||
memset (buf, padchar, n);
|
||
rc = outfnc (outfncarg, buf, n);
|
||
if (rc)
|
||
return rc;
|
||
*nbytes += n;
|
||
count -= n;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* "d,i,o,u,x,X" formatting. OUTFNC and OUTFNCARG describes the
|
||
output routine, ARG gives the argument description and VALUE the
|
||
actual value (its type is available through arg->vt). */
|
||
static int
|
||
pr_integer (estream_printf_out_t outfnc, void *outfncarg,
|
||
argspec_t arg, value_t value, size_t *nbytes)
|
||
{
|
||
int rc;
|
||
#ifdef HAVE_LONG_LONG_INT
|
||
unsigned long long aulong;
|
||
#else
|
||
unsigned long aulong;
|
||
#endif
|
||
char numbuf[100];
|
||
char *p, *pend;
|
||
size_t n;
|
||
char signchar = 0;
|
||
int n_prec; /* Number of extra precision digits required. */
|
||
int n_extra; /* Extra number of prefix or sign characters. */
|
||
|
||
if (arg->conspec == CONSPEC_DECIMAL)
|
||
{
|
||
#ifdef HAVE_LONG_LONG_INT
|
||
long long along;
|
||
#else
|
||
long along;
|
||
#endif
|
||
|
||
switch (arg->vt)
|
||
{
|
||
case VALTYPE_SHORT: along = value.a_short; break;
|
||
case VALTYPE_INT: along = value.a_int; break;
|
||
case VALTYPE_LONG: along = value.a_long; break;
|
||
#ifdef HAVE_LONG_LONG_INT
|
||
case VALTYPE_LONGLONG: along = value.a_longlong; break;
|
||
case VALTYPE_SIZE: along = value.a_size; break;
|
||
# ifdef HAVE_INTMAX_T
|
||
case VALTYPE_INTMAX: along = value.a_intmax; break;
|
||
# endif
|
||
# ifdef HAVE_PTRDIFF_T
|
||
case VALTYPE_PTRDIFF: along = value.a_ptrdiff; break;
|
||
# endif
|
||
#endif /*HAVE_LONG_LONG_INT*/
|
||
default:
|
||
return -1;
|
||
}
|
||
if (along < 0)
|
||
{
|
||
aulong = -along;
|
||
signchar = '-';
|
||
}
|
||
else
|
||
aulong = along;
|
||
}
|
||
else
|
||
{
|
||
switch (arg->vt)
|
||
{
|
||
case VALTYPE_USHORT: aulong = value.a_ushort; break;
|
||
case VALTYPE_UINT: aulong = value.a_uint; break;
|
||
case VALTYPE_ULONG: aulong = value.a_ulong; break;
|
||
#ifdef HAVE_LONG_LONG_INT
|
||
case VALTYPE_ULONGLONG: aulong = value.a_ulonglong; break;
|
||
case VALTYPE_SIZE: aulong = value.a_size; break;
|
||
# ifdef HAVE_UINTMAX_T
|
||
case VALTYPE_UINTMAX: aulong = value.a_uintmax; break;
|
||
# endif
|
||
# ifdef HAVE_PTRDIFF_T
|
||
case VALTYPE_PTRDIFF: aulong = value.a_ptrdiff; break;
|
||
# endif
|
||
#endif /*HAVE_LONG_LONG_INT*/
|
||
default:
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
if (signchar == '-')
|
||
;
|
||
else if ((arg->flags & FLAG_PLUS_SIGN))
|
||
signchar = '+';
|
||
else if ((arg->flags & FLAG_SPACE_PLUS))
|
||
signchar = ' ';
|
||
|
||
n_extra = !!signchar;
|
||
|
||
/* We build the string up backwards. */
|
||
p = pend = numbuf + DIM(numbuf);
|
||
if ((!aulong && !arg->precision))
|
||
;
|
||
else if (arg->conspec == CONSPEC_DECIMAL
|
||
|| arg->conspec == CONSPEC_UNSIGNED)
|
||
{
|
||
int grouping = -1;
|
||
const char * grouping_string =
|
||
#ifdef HAVE_LANGINFO_THOUSANDS_SEP
|
||
nl_langinfo(THOUSANDS_SEP);
|
||
#else
|
||
"'";
|
||
#endif
|
||
|
||
do
|
||
{
|
||
if ((arg->flags & FLAG_GROUPING)
|
||
&& (++grouping == 3) && *grouping_string)
|
||
{
|
||
*--p = *grouping_string;
|
||
grouping = 0;
|
||
}
|
||
*--p = '0' + (aulong % 10);
|
||
aulong /= 10;
|
||
}
|
||
while (aulong);
|
||
}
|
||
else if (arg->conspec == CONSPEC_OCTAL)
|
||
{
|
||
do
|
||
{
|
||
*--p = '0' + (aulong % 8);
|
||
aulong /= 8;
|
||
}
|
||
while (aulong);
|
||
if ((arg->flags & FLAG_ALT_CONV) && *p != '0')
|
||
*--p = '0';
|
||
}
|
||
else /* HEX or HEXUP */
|
||
{
|
||
const char *digits = ((arg->conspec == CONSPEC_HEX)
|
||
? "0123456789abcdef" : "0123456789ABCDEF");
|
||
do
|
||
{
|
||
*--p = digits[(aulong % 16)];
|
||
aulong /= 16;
|
||
}
|
||
while (aulong);
|
||
if ((arg->flags & FLAG_ALT_CONV))
|
||
n_extra += 2;
|
||
}
|
||
|
||
n = pend - p;
|
||
|
||
if ((arg->flags & FLAG_ZERO_PAD)
|
||
&& arg->precision == NO_FIELD_VALUE && !(arg->flags & FLAG_LEFT_JUST)
|
||
&& n && arg->width - n_extra > n )
|
||
n_prec = arg->width - n_extra - n;
|
||
else if (arg->precision > 0 && arg->precision > n)
|
||
n_prec = arg->precision - n;
|
||
else
|
||
n_prec = 0;
|
||
|
||
if (!(arg->flags & FLAG_LEFT_JUST)
|
||
&& arg->width >= 0 && arg->width - n_extra > n
|
||
&& arg->width - n_extra - n >= n_prec )
|
||
{
|
||
rc = pad_out (outfnc, outfncarg, ' ',
|
||
arg->width - n_extra - n - n_prec, nbytes);
|
||
if (rc)
|
||
return rc;
|
||
}
|
||
|
||
if (signchar)
|
||
{
|
||
rc = outfnc (outfncarg, &signchar, 1);
|
||
if (rc)
|
||
return rc;
|
||
*nbytes += 1;
|
||
}
|
||
|
||
if ((arg->flags & FLAG_ALT_CONV)
|
||
&& (arg->conspec == CONSPEC_HEX || arg->conspec == CONSPEC_HEX_UP))
|
||
{
|
||
rc = outfnc (outfncarg, arg->conspec == CONSPEC_HEX? "0x": "0X", 2);
|
||
if (rc)
|
||
return rc;
|
||
*nbytes += 2;
|
||
}
|
||
|
||
if (n_prec)
|
||
{
|
||
rc = pad_out (outfnc, outfncarg, '0', n_prec, nbytes);
|
||
if (rc)
|
||
return rc;
|
||
}
|
||
|
||
rc = outfnc (outfncarg, p, pend - p);
|
||
if (rc)
|
||
return rc;
|
||
*nbytes += pend - p;
|
||
|
||
if ((arg->flags & FLAG_LEFT_JUST)
|
||
&& arg->width >= 0 && arg->width - n_extra - n_prec > n)
|
||
{
|
||
rc = pad_out (outfnc, outfncarg, ' ',
|
||
arg->width - n_extra - n_prec - n, nbytes);
|
||
if (rc)
|
||
return rc;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* "e,E,f,F,g,G,a,A" formatting. OUTFNC and OUTFNCARG describes the
|
||
output routine, ARG gives the argument description and VALUE the
|
||
actual value (its type is available through arg->vt). For
|
||
portability reasons sprintf is used for the actual formatting.
|
||
This is useful because sprint is the only standard function to
|
||
convert a floating number into its ascii representation. To avoid
|
||
using malloc we just pass the precision to sprintf and do the final
|
||
formatting with our own code. */
|
||
static int
|
||
pr_float (estream_printf_out_t outfnc, void *outfncarg,
|
||
argspec_t arg, value_t value, size_t *nbytes)
|
||
{
|
||
int rc;
|
||
#ifdef HAVE_LONG_DOUBLE
|
||
long double adblfloat = 0; /* Just to please gcc. */
|
||
int use_dbl = 0;
|
||
#endif
|
||
double afloat;
|
||
char numbuf[350];
|
||
char formatstr[20];
|
||
char *p, *pend;
|
||
size_t n;
|
||
char signchar = 0;
|
||
int n_extra; /* Extra number of prefix or sign characters. */
|
||
|
||
switch (arg->vt)
|
||
{
|
||
case VALTYPE_DOUBLE: afloat = value.a_double; break;
|
||
#ifdef HAVE_LONG_DOUBLE
|
||
case VALTYPE_LONGDOUBLE:
|
||
afloat = 0; /* Just to please gcc. */
|
||
adblfloat = value.a_longdouble;
|
||
use_dbl=1; break;
|
||
#endif
|
||
default:
|
||
return -1;
|
||
}
|
||
|
||
/* We build the string using sprint. */
|
||
p = formatstr + sizeof formatstr;
|
||
*--p = 0;
|
||
switch (arg->conspec)
|
||
{
|
||
case CONSPEC_FLOAT: *--p = 'f'; break;
|
||
case CONSPEC_FLOAT_UP: *--p = 'F'; break;
|
||
case CONSPEC_EXP: *--p = 'e'; break;
|
||
case CONSPEC_EXP_UP: *--p = 'E'; break;
|
||
case CONSPEC_F_OR_G: *--p = 'g'; break;
|
||
case CONSPEC_F_OR_G_UP: *--p = 'G'; break;
|
||
case CONSPEC_HEX_EXP: *--p = 'a'; break;
|
||
case CONSPEC_HEX_EXP_UP: *--p = 'A'; break;
|
||
default:
|
||
return -1; /* Actually a bug. */
|
||
}
|
||
#ifdef HAVE_LONG_DOUBLE
|
||
if (use_dbl)
|
||
*--p = 'L';
|
||
#endif
|
||
if (arg->precision != NO_FIELD_VALUE)
|
||
{
|
||
/* Limit it to a meaningful value so that even a stupid sprintf
|
||
won't overflow our buffer. */
|
||
n = arg->precision <= 100? arg->precision : 100;
|
||
do
|
||
{
|
||
*--p = '0' + (n % 10);
|
||
n /= 10;
|
||
}
|
||
while (n);
|
||
*--p = '.';
|
||
}
|
||
if ((arg->flags & FLAG_ALT_CONV))
|
||
*--p = '#';
|
||
*--p = '%';
|
||
#ifdef HAVE_LONG_DOUBLE
|
||
if (use_dbl)
|
||
sprintf (numbuf, p, adblfloat);
|
||
else
|
||
#endif /*HAVE_LONG_DOUBLE*/
|
||
sprintf (numbuf, p, afloat);
|
||
p = numbuf;
|
||
n = strlen (numbuf);
|
||
pend = p + n;
|
||
|
||
if (*p =='-')
|
||
{
|
||
signchar = '-';
|
||
p++;
|
||
n--;
|
||
}
|
||
else if ((arg->flags & FLAG_PLUS_SIGN))
|
||
signchar = '+';
|
||
else if ((arg->flags & FLAG_SPACE_PLUS))
|
||
signchar = ' ';
|
||
|
||
n_extra = !!signchar;
|
||
|
||
if (!(arg->flags & FLAG_LEFT_JUST)
|
||
&& arg->width >= 0 && arg->width - n_extra > n)
|
||
{
|
||
rc = pad_out (outfnc, outfncarg, ' ', arg->width - n_extra - n, nbytes);
|
||
if (rc)
|
||
return rc;
|
||
}
|
||
|
||
if (signchar)
|
||
{
|
||
rc = outfnc (outfncarg, &signchar, 1);
|
||
if (rc)
|
||
return rc;
|
||
*nbytes += 1;
|
||
}
|
||
|
||
rc = outfnc (outfncarg, p, pend - p);
|
||
if (rc)
|
||
return rc;
|
||
*nbytes += pend - p;
|
||
|
||
if ((arg->flags & FLAG_LEFT_JUST)
|
||
&& arg->width >= 0 && arg->width - n_extra > n)
|
||
{
|
||
rc = pad_out (outfnc, outfncarg, ' ', arg->width - n_extra - n, nbytes);
|
||
if (rc)
|
||
return rc;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* "c" formatting. */
|
||
static int
|
||
pr_char (estream_printf_out_t outfnc, void *outfncarg,
|
||
argspec_t arg, value_t value, size_t *nbytes)
|
||
{
|
||
int rc;
|
||
char buf[1];
|
||
|
||
if (arg->vt != VALTYPE_INT)
|
||
return -1;
|
||
buf[0] = (unsigned int)value.a_int;
|
||
rc = outfnc (outfncarg, buf, 1);
|
||
if(rc)
|
||
return rc;
|
||
*nbytes += 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* "s" formatting. */
|
||
static int
|
||
pr_string (estream_printf_out_t outfnc, void *outfncarg,
|
||
argspec_t arg, value_t value, size_t *nbytes)
|
||
{
|
||
int rc;
|
||
size_t n;
|
||
const char *string, *s;
|
||
|
||
if (arg->vt != VALTYPE_STRING)
|
||
return -1;
|
||
string = value.a_string;
|
||
if (!string)
|
||
string = "(null)";
|
||
if (arg->precision >= 0)
|
||
{
|
||
/* Test for nul after N so that we can pass a non-nul terminated
|
||
string. */
|
||
for (n=0,s=string; n < arg->precision && *s; s++)
|
||
n++;
|
||
}
|
||
else
|
||
n = strlen (string);
|
||
|
||
if (!(arg->flags & FLAG_LEFT_JUST)
|
||
&& arg->width >= 0 && arg->width > n )
|
||
{
|
||
rc = pad_out (outfnc, outfncarg, ' ', arg->width - n, nbytes);
|
||
if (rc)
|
||
return rc;
|
||
}
|
||
|
||
rc = outfnc (outfncarg, string, n);
|
||
if (rc)
|
||
return rc;
|
||
*nbytes += n;
|
||
|
||
if ((arg->flags & FLAG_LEFT_JUST)
|
||
&& arg->width >= 0 && arg->width > n)
|
||
{
|
||
rc = pad_out (outfnc, outfncarg, ' ', arg->width - n, nbytes);
|
||
if (rc)
|
||
return rc;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* "p" formatting. */
|
||
static int
|
||
pr_pointer (estream_printf_out_t outfnc, void *outfncarg,
|
||
argspec_t arg, value_t value, size_t *nbytes)
|
||
{
|
||
int rc;
|
||
#if defined(HAVE_LONG_LONG_INT) && (SIZEOF_UNSIGNED_LONG < SIZEOF_VOID_P)
|
||
unsigned long long aulong;
|
||
#else
|
||
unsigned long aulong;
|
||
#endif
|
||
char numbuf[100];
|
||
char *p, *pend;
|
||
|
||
if (arg->vt != VALTYPE_POINTER)
|
||
return -1;
|
||
/* We assume that a pointer can be converted to an unsigned long.
|
||
That is not correct for a 64 bit Windows, but then we assume that
|
||
long long is supported and usable for storing a pointer. */
|
||
#if defined(HAVE_LONG_LONG_INT) && (SIZEOF_UNSIGNED_LONG < SIZEOF_VOID_P)
|
||
aulong = (unsigned long long)value.a_void_ptr;
|
||
#else
|
||
aulong = (unsigned long)value.a_void_ptr;
|
||
#endif
|
||
|
||
p = pend = numbuf + DIM(numbuf);
|
||
do
|
||
{
|
||
*--p = "0123456789abcdefx"[(aulong % 16)];
|
||
aulong /= 16;
|
||
}
|
||
while (aulong);
|
||
while ((pend-p) < 2*sizeof (aulong))
|
||
*--p = '0';
|
||
*--p = 'x';
|
||
*--p = '0';
|
||
|
||
rc = outfnc (outfncarg, p, pend - p);
|
||
if (rc)
|
||
return rc;
|
||
*nbytes += pend - p;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* "n" pesudo format operation. */
|
||
static int
|
||
pr_bytes_so_far (estream_printf_out_t outfnc, void *outfncarg,
|
||
argspec_t arg, value_t value, size_t *nbytes)
|
||
{
|
||
(void)outfnc;
|
||
(void)outfncarg;
|
||
|
||
switch (arg->vt)
|
||
{
|
||
case VALTYPE_SCHAR_PTR:
|
||
*value.a_schar_ptr = (signed char)(unsigned int)(*nbytes);
|
||
break;
|
||
case VALTYPE_SHORT_PTR:
|
||
*value.a_short_ptr = (short)(unsigned int)(*nbytes);
|
||
break;
|
||
case VALTYPE_LONG_PTR:
|
||
*value.a_long_ptr = (long)(*nbytes);
|
||
break;
|
||
#ifdef HAVE_LONG_LONG_INT
|
||
case VALTYPE_LONGLONG_PTR:
|
||
*value.a_longlong_ptr = (long long)(*nbytes);
|
||
break;
|
||
#endif
|
||
#ifdef HAVE_INTMAX_T
|
||
case VALTYPE_INTMAX_PTR:
|
||
*value.a_intmax_ptr = (intmax_t)(*nbytes);
|
||
break;
|
||
#endif
|
||
case VALTYPE_SIZE_PTR:
|
||
*value.a_size_ptr = (*nbytes);
|
||
break;
|
||
#ifdef HAVE_PTRDIFF_T
|
||
case VALTYPE_PTRDIFF_PTR:
|
||
*value.a_ptrdiff_ptr = (ptrdiff_t)(*nbytes);
|
||
break;
|
||
#endif
|
||
case VALTYPE_INT_PTR:
|
||
*value.a_int_ptr = (int)(*nbytes);
|
||
break;
|
||
default:
|
||
return -1; /* An unsupported type has been used. */
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
|
||
/* Run the actual formatting. OUTFNC and OUTFNCARG are the output
|
||
functions. FORMAT is format string ARGSPECS is the parsed format
|
||
string, ARGSPECS_LEN the number of items in ARGSPECS. VALUETABLE
|
||
holds the values and may be directly addressed using the position
|
||
arguments given by ARGSPECS. MYERRNO is used for the "%m"
|
||
conversion. NBYTES well be updated to reflect the number of bytes
|
||
send to the output function. */
|
||
static int
|
||
do_format (estream_printf_out_t outfnc, void *outfncarg,
|
||
const char *format, argspec_t argspecs, size_t argspecs_len,
|
||
valueitem_t valuetable, int myerrno, size_t *nbytes)
|
||
{
|
||
int rc = 0;
|
||
const char *s;
|
||
argspec_t arg = argspecs;
|
||
int argidx = 0; /* Only used for assertion. */
|
||
size_t n;
|
||
value_t value;
|
||
|
||
s = format;
|
||
while ( *s )
|
||
{
|
||
if (*s != '%')
|
||
{
|
||
s++;
|
||
continue;
|
||
}
|
||
if (s != format)
|
||
{
|
||
rc = outfnc (outfncarg, format, (n=s-format));
|
||
if (rc)
|
||
return rc;
|
||
*nbytes += n;
|
||
}
|
||
if (s[1] == '%')
|
||
{
|
||
/* Note that this code ignores one trailing percent escape -
|
||
this is however okay as the args parser must have
|
||
detected this already. */
|
||
rc = outfnc (outfncarg, s, 1);
|
||
if (rc)
|
||
return rc;
|
||
*nbytes += 1;
|
||
s += 2;
|
||
format = s;
|
||
continue;
|
||
}
|
||
|
||
/* Save the next start. */
|
||
s += arg->length;
|
||
format = s;
|
||
|
||
assert (argidx < argspecs_len);
|
||
argidx++;
|
||
|
||
/* Apply indirect field width and precision values. */
|
||
if (arg->width == STAR_FIELD_VALUE)
|
||
{
|
||
assert (valuetable[arg->width_pos-1].vt == VALTYPE_INT);
|
||
arg->width = valuetable[arg->width_pos-1].value.a_int;
|
||
if (arg->width < 0)
|
||
{
|
||
arg->width = -arg->width;
|
||
arg->flags |= FLAG_LEFT_JUST;
|
||
}
|
||
}
|
||
if (arg->precision == STAR_FIELD_VALUE)
|
||
{
|
||
assert (valuetable[arg->precision_pos-1].vt == VALTYPE_INT);
|
||
arg->precision = valuetable[arg->precision_pos-1].value.a_int;
|
||
if (arg->precision < 0)
|
||
arg->precision = NO_FIELD_VALUE;
|
||
}
|
||
|
||
if (arg->arg_pos == -1 && arg->conspec == CONSPEC_STRERROR)
|
||
value.a_string = strerror (myerrno);
|
||
else
|
||
{
|
||
assert (arg->vt == valuetable[arg->arg_pos-1].vt);
|
||
value = valuetable[arg->arg_pos-1].value;
|
||
}
|
||
|
||
switch (arg->conspec)
|
||
{
|
||
case CONSPEC_UNKNOWN: assert (!"bug"); break;
|
||
|
||
case CONSPEC_DECIMAL:
|
||
case CONSPEC_UNSIGNED:
|
||
case CONSPEC_OCTAL:
|
||
case CONSPEC_HEX:
|
||
case CONSPEC_HEX_UP:
|
||
rc = pr_integer (outfnc, outfncarg, arg, value, nbytes);
|
||
break;
|
||
case CONSPEC_FLOAT:
|
||
case CONSPEC_FLOAT_UP:
|
||
case CONSPEC_EXP:
|
||
case CONSPEC_EXP_UP:
|
||
case CONSPEC_F_OR_G:
|
||
case CONSPEC_F_OR_G_UP:
|
||
case CONSPEC_HEX_EXP:
|
||
case CONSPEC_HEX_EXP_UP:
|
||
rc = pr_float (outfnc, outfncarg, arg, value, nbytes);
|
||
break;
|
||
case CONSPEC_CHAR:
|
||
rc = pr_char (outfnc, outfncarg, arg, value, nbytes);
|
||
break;
|
||
case CONSPEC_STRING:
|
||
case CONSPEC_STRERROR:
|
||
rc = pr_string (outfnc, outfncarg, arg, value, nbytes);
|
||
break;
|
||
case CONSPEC_POINTER:
|
||
rc = pr_pointer (outfnc, outfncarg, arg, value, nbytes);
|
||
break;
|
||
case CONSPEC_BYTES_SO_FAR:
|
||
rc = pr_bytes_so_far (outfnc, outfncarg, arg, value, nbytes);
|
||
break;
|
||
}
|
||
if (rc)
|
||
return rc;
|
||
arg++;
|
||
}
|
||
|
||
/* Print out any trailing stuff. */
|
||
n = s - format;
|
||
rc = n? outfnc (outfncarg, format, n) : 0;
|
||
if (!rc)
|
||
*nbytes += n;
|
||
|
||
return rc;
|
||
}
|
||
|
||
|
||
|
||
|
||
/* The versatile printf formatting routine. It expects a callback
|
||
function OUTFNC and an opaque argument OUTFNCARG used for actual
|
||
output of the formatted stuff. FORMAT is the format specification
|
||
and VAARGS a variable argumemt list matching the arguments of
|
||
FORMAT. */
|
||
int
|
||
estream_format (estream_printf_out_t outfnc,
|
||
void *outfncarg,
|
||
const char *format, va_list vaargs)
|
||
{
|
||
/* Buffer to hold the argspecs and a pointer to it.*/
|
||
struct argspec_s argspecs_buffer[DEFAULT_MAX_ARGSPECS];
|
||
argspec_t argspecs = argspecs_buffer;
|
||
size_t argspecs_len; /* Number of specifications in ARGSPECS. */
|
||
|
||
/* Buffer to hold the description for the values. */
|
||
struct valueitem_s valuetable_buffer[DEFAULT_MAX_VALUES];
|
||
valueitem_t valuetable = valuetable_buffer;
|
||
|
||
int rc; /* Return code. */
|
||
size_t argidx; /* Used to index the argspecs array. */
|
||
size_t validx; /* Used to index the valuetable. */
|
||
int max_pos;/* Highest argument position. */
|
||
|
||
size_t nbytes = 0; /* Keep track of the number of bytes passed to
|
||
the output function. */
|
||
|
||
int myerrno = errno; /* Save the errno for use with "%m". */
|
||
|
||
|
||
/* Parse the arguments to come up with descriptive list. We can't
|
||
do this on the fly because we need to support positional
|
||
arguments. */
|
||
rc = parse_format (format, &argspecs, DIM(argspecs_buffer), &argspecs_len);
|
||
if (rc)
|
||
goto leave;
|
||
|
||
/* Check that all ARG_POS fields are set. */
|
||
for (argidx=0,max_pos=0; argidx < argspecs_len; argidx++)
|
||
{
|
||
if (argspecs[argidx].arg_pos != -1
|
||
&& argspecs[argidx].arg_pos > max_pos)
|
||
max_pos = argspecs[argidx].arg_pos;
|
||
if (argspecs[argidx].width_pos > max_pos)
|
||
max_pos = argspecs[argidx].width_pos;
|
||
if (argspecs[argidx].precision_pos > max_pos)
|
||
max_pos = argspecs[argidx].precision_pos;
|
||
}
|
||
if (!max_pos)
|
||
{
|
||
/* Fill in all the positions. */
|
||
for (argidx=0; argidx < argspecs_len; argidx++)
|
||
{
|
||
if (argspecs[argidx].width == STAR_FIELD_VALUE)
|
||
argspecs[argidx].width_pos = ++max_pos;
|
||
if (argspecs[argidx].precision == STAR_FIELD_VALUE)
|
||
argspecs[argidx].precision_pos = ++max_pos;
|
||
if (argspecs[argidx].arg_pos != -1 )
|
||
argspecs[argidx].arg_pos = ++max_pos;
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/* Check that they are all filled. More test are done later. */
|
||
for (argidx=0; argidx < argspecs_len; argidx++)
|
||
{
|
||
if (!argspecs[argidx].arg_pos
|
||
|| (argspecs[argidx].width == STAR_FIELD_VALUE
|
||
&& !argspecs[argidx].width_pos)
|
||
|| (argspecs[argidx].precision == STAR_FIELD_VALUE
|
||
&& !argspecs[argidx].precision_pos))
|
||
goto leave_einval;
|
||
}
|
||
}
|
||
/* Check that there is no overflow in max_pos and that it has a
|
||
reasonable length. There may never be more elements than the
|
||
number of characters in FORMAT. */
|
||
if (max_pos < 0 || max_pos >= strlen (format))
|
||
goto leave_einval;
|
||
|
||
#ifdef DEBUG
|
||
dump_argspecs (argspecs, argspecs_len);
|
||
#endif
|
||
|
||
/* Allocate a table to hold the values. If it is small enough we
|
||
use a stack allocated buffer. */
|
||
if (max_pos > DIM(valuetable_buffer))
|
||
{
|
||
valuetable = calloc (max_pos, sizeof *valuetable);
|
||
if (!valuetable)
|
||
goto leave_error;
|
||
}
|
||
else
|
||
{
|
||
for (validx=0; validx < DIM(valuetable_buffer); validx++)
|
||
valuetable[validx].vt = VALTYPE_UNSUPPORTED;
|
||
}
|
||
for (argidx=0; argidx < argspecs_len; argidx++)
|
||
{
|
||
if (argspecs[argidx].arg_pos != - 1)
|
||
{
|
||
validx = argspecs[argidx].arg_pos - 1;
|
||
if (valuetable[validx].vt)
|
||
goto leave_einval; /* Already defined. */
|
||
valuetable[validx].vt = argspecs[argidx].vt;
|
||
}
|
||
if (argspecs[argidx].width == STAR_FIELD_VALUE)
|
||
{
|
||
validx = argspecs[argidx].width_pos - 1;
|
||
if (valuetable[validx].vt)
|
||
goto leave_einval; /* Already defined. */
|
||
valuetable[validx].vt = VALTYPE_INT;
|
||
}
|
||
if (argspecs[argidx].precision == STAR_FIELD_VALUE)
|
||
{
|
||
validx = argspecs[argidx].precision_pos - 1;
|
||
if (valuetable[validx].vt)
|
||
goto leave_einval; /* Already defined. */
|
||
valuetable[validx].vt = VALTYPE_INT;
|
||
}
|
||
}
|
||
|
||
/* Read all the arguments. This will error out for unsupported
|
||
types and for not given positional arguments. */
|
||
rc = read_values (valuetable, max_pos, vaargs);
|
||
if (rc)
|
||
goto leave_einval;
|
||
|
||
/* for (validx=0; validx < max_pos; validx++) */
|
||
/* fprintf (stderr, "%2d: vt=%d\n", validx, valuetable[validx].vt); */
|
||
|
||
/* Everything has been collected, go ahead with the formatting. */
|
||
rc = do_format (outfnc, outfncarg, format,
|
||
argspecs, argspecs_len, valuetable, myerrno, &nbytes);
|
||
|
||
goto leave;
|
||
|
||
leave_einval:
|
||
errno = EINVAL;
|
||
leave_error:
|
||
rc = -1;
|
||
leave:
|
||
if (valuetable != valuetable_buffer)
|
||
free (valuetable);
|
||
if (argspecs != argspecs_buffer)
|
||
free (argspecs);
|
||
return rc;
|
||
}
|
||
|
||
|
||
|
||
|
||
/* A simple output handler utilizing stdio. */
|
||
static int
|
||
plain_stdio_out (void *outfncarg, const char *buf, size_t buflen)
|
||
{
|
||
FILE *fp = (FILE*)outfncarg;
|
||
|
||
if ( fwrite (buf, buflen, 1, fp) != 1 )
|
||
return -1;
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* A replacement for printf. */
|
||
int
|
||
estream_printf (const char *format, ...)
|
||
{
|
||
int rc;
|
||
va_list arg_ptr;
|
||
|
||
va_start (arg_ptr, format);
|
||
rc = estream_format (plain_stdio_out, stderr, format, arg_ptr);
|
||
va_end (arg_ptr);
|
||
|
||
return rc;
|
||
}
|
||
|
||
/* A replacement for fprintf. */
|
||
int
|
||
estream_fprintf (FILE *fp, const char *format, ...)
|
||
{
|
||
int rc;
|
||
va_list arg_ptr;
|
||
|
||
va_start (arg_ptr, format);
|
||
rc = estream_format (plain_stdio_out, fp, format, arg_ptr);
|
||
va_end (arg_ptr);
|
||
|
||
return rc;
|
||
}
|
||
|
||
/* A replacement for vfprintf. */
|
||
int
|
||
estream_vfprintf (FILE *fp, const char *format, va_list arg_ptr)
|
||
{
|
||
return estream_format (plain_stdio_out, fp, format, arg_ptr);
|
||
}
|
||
|
||
|
||
|
||
/* Communication object used between estream_snprintf and
|
||
fixed_buffer_out. */
|
||
struct fixed_buffer_parm_s
|
||
{
|
||
size_t size; /* Size of the buffer. */
|
||
size_t count; /* Number of bytes requested for output. */
|
||
size_t used; /* Used size of the buffer. */
|
||
char *buffer; /* Provided buffer. */
|
||
};
|
||
|
||
/* A simple malloced buffer output handler. */
|
||
static int
|
||
fixed_buffer_out (void *outfncarg, const char *buf, size_t buflen)
|
||
{
|
||
struct fixed_buffer_parm_s *parm = outfncarg;
|
||
|
||
parm->count += buflen;
|
||
|
||
if (!parm->buffer)
|
||
;
|
||
else if (parm->used + buflen < parm->size)
|
||
{
|
||
/* Handle the common case that everything fits into the buffer
|
||
separately. */
|
||
memcpy (parm->buffer + parm->used, buf, buflen);
|
||
parm->used += buflen;
|
||
}
|
||
else
|
||
{
|
||
/* The slow version of above. */
|
||
for ( ;buflen && parm->used < parm->size; buflen--)
|
||
parm->buffer[parm->used++] = *buf++;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* A replacement for vsnprintf. */
|
||
int
|
||
estream_vsnprintf (char *buf, size_t bufsize,
|
||
const char *format, va_list arg_ptr)
|
||
{
|
||
struct fixed_buffer_parm_s parm;
|
||
int rc;
|
||
|
||
parm.size = bufsize;
|
||
parm.count = 0;
|
||
parm.used = 0;
|
||
parm.buffer = bufsize?buf:NULL;
|
||
rc = estream_format (fixed_buffer_out, &parm, format, arg_ptr);
|
||
if (!rc)
|
||
rc = fixed_buffer_out (&parm, "", 1); /* Print terminating Nul. */
|
||
if (rc == -1)
|
||
return -1;
|
||
if (bufsize && buf && parm.size && parm.count >= parm.size)
|
||
buf[parm.size-1] = 0;
|
||
|
||
parm.count--; /* Do not count the trailing nul. */
|
||
return (int)parm.count; /* Return number of bytes which would have
|
||
been written. */
|
||
}
|
||
|
||
/* A replacement for snprintf. */
|
||
int
|
||
estream_snprintf (char *buf, size_t bufsize, const char *format, ...)
|
||
{
|
||
int rc;
|
||
va_list arg_ptr;
|
||
|
||
va_start (arg_ptr, format);
|
||
rc = estream_vsnprintf (buf, bufsize, format, arg_ptr);
|
||
va_end (arg_ptr);
|
||
|
||
return rc;
|
||
}
|
||
|
||
|
||
|
||
/* Communication object used between estream_asprintf and
|
||
dynamic_buffer_out. */
|
||
struct dynamic_buffer_parm_s
|
||
{
|
||
int error_flag; /* Internal helper. */
|
||
size_t alloced; /* Allocated size of the buffer. */
|
||
size_t used; /* Used size of the buffer. */
|
||
char *buffer; /* Malloced buffer. */
|
||
};
|
||
|
||
/* A simple malloced buffer output handler. */
|
||
static int
|
||
dynamic_buffer_out (void *outfncarg, const char *buf, size_t buflen)
|
||
{
|
||
struct dynamic_buffer_parm_s *parm = outfncarg;
|
||
|
||
if (parm->error_flag)
|
||
{
|
||
/* Just in case some formatting routine did not checked for an
|
||
error. */
|
||
errno = parm->error_flag;
|
||
return -1;
|
||
}
|
||
|
||
if (parm->used + buflen >= parm->alloced)
|
||
{
|
||
char *p;
|
||
|
||
parm->alloced += buflen + 512;
|
||
p = realloc (parm->buffer, parm->alloced);
|
||
if (!p)
|
||
{
|
||
parm->error_flag = errno ? errno : ENOMEM;
|
||
/* Wipe out what we already accumulated. This is useful in
|
||
case sensitive data is formated. */
|
||
memset (parm->buffer, 0, parm->used);
|
||
return -1;
|
||
}
|
||
parm->buffer = p;
|
||
}
|
||
memcpy (parm->buffer + parm->used, buf, buflen);
|
||
parm->used += buflen;
|
||
|
||
return 0;
|
||
}
|
||
|
||
|
||
/* A replacement for vasprintf. As with the BSD of vasprintf version -1
|
||
will be returned on error and NULL stored at BUFP. On success the
|
||
number of bytes printed will be returned. */
|
||
int
|
||
estream_vasprintf (char **bufp, const char *format, va_list arg_ptr)
|
||
{
|
||
struct dynamic_buffer_parm_s parm;
|
||
int rc;
|
||
|
||
parm.error_flag = 0;
|
||
parm.alloced = 512;
|
||
parm.used = 0;
|
||
parm.buffer = my_printf_malloc (parm.alloced);
|
||
if (!parm.buffer)
|
||
{
|
||
*bufp = NULL;
|
||
return -1;
|
||
}
|
||
|
||
rc = estream_format (dynamic_buffer_out, &parm, format, arg_ptr);
|
||
if (!rc)
|
||
rc = dynamic_buffer_out (&parm, "", 1); /* Print terminating Nul. */
|
||
/* Fixme: Should we shrink the resulting buffer? */
|
||
if (rc != -1 && parm.error_flag)
|
||
{
|
||
rc = -1;
|
||
errno = parm.error_flag;
|
||
}
|
||
if (rc == -1)
|
||
{
|
||
memset (parm.buffer, 0, parm.used);
|
||
my_printf_free (parm.buffer);
|
||
*bufp = NULL;
|
||
return -1;
|
||
}
|
||
assert (parm.used); /* We have at least the terminating Nul. */
|
||
*bufp = parm.buffer;
|
||
return parm.used - 1; /* Do not include that Nul. */
|
||
}
|
||
|
||
/* A replacement for asprintf. As with the BSD of asprintf version -1
|
||
will be returned on error and NULL stored at BUFP. On success the
|
||
number of bytes printed will be returned. */
|
||
int
|
||
estream_asprintf (char **bufp, const char *format, ...)
|
||
{
|
||
int rc;
|
||
va_list arg_ptr;
|
||
|
||
va_start (arg_ptr, format);
|
||
rc = estream_vasprintf (bufp, format, arg_ptr);
|
||
va_end (arg_ptr);
|
||
|
||
return rc;
|
||
}
|
||
|
||
|