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/* util.h
Copyright (C) 2000 Werner Koch (dd9jn)
Copyright (C) 2001, 2002, 2003, 2004, 2005 g10 Code GmbH
This file is part of GPGME.
GPGME is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of
the License, or (at your option) any later version.
GPGME is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
#ifndef UTIL_H
#define UTIL_H
#include "gpgme.h"
#define DIM(v) (sizeof(v)/sizeof((v)[0]))
/*-- {posix,w32}-util.c --*/
const char *_gpgme_get_gpg_path (void);
const char *_gpgme_get_gpgsm_path (void);
int _gpgme_get_conf_int (const char *key, int *value);
/*-- replacement functions in <funcname>.c --*/
#ifdef HAVE_CONFIG_H
#ifndef HAVE_STPCPY
static _GPGME_INLINE char *
_gpgme_stpcpy (char *a, const char *b)
{
while (*b)
*a++ = *b++;
*a = 0;
return a;
}
#define stpcpy(a,b) _gpgme_stpcpy ((a), (b))
#endif /*!HAVE_STPCPY*/
#if !HAVE_VASPRINTF
#include <stdarg.h>
int vasprintf (char **result, const char *format, va_list args);
int asprintf (char **result, const char *format, ...);
#endif
#ifndef HAVE_TTYNAME_R
int ttyname_r (int fd, char *buf, size_t buflen);
#endif
#endif
/*-- conversion.c --*/
/* Convert two hexadecimal digits from STR to the value they
represent. Returns -1 if one of the characters is not a
hexadecimal digit. */
int _gpgme_hextobyte (const char *str);
/* Decode the C formatted string SRC and store the result in the
buffer *DESTP which is LEN bytes long. If LEN is zero, then a
large enough buffer is allocated with malloc and *DESTP is set to
the result. Currently, LEN is only used to specify if allocation
is desired or not, the caller is expected to make sure that *DESTP
is large enough if LEN is not zero. */
gpgme_error_t _gpgme_decode_c_string (const char *src, char **destp,
size_t len);
/* Decode the percent escaped string SRC and store the result in the
buffer *DESTP which is LEN bytes long. If LEN is zero, then a
large enough buffer is allocated with malloc and *DESTP is set to
the result. Currently, LEN is only used to specify if allocation
is desired or not, the caller is expected to make sure that *DESTP
is large enough if LEN is not zero. If BINARY is 1, then '\0'
characters are allowed in the output. */
gpgme_error_t _gpgme_decode_percent_string (const char *src, char **destp,
size_t len, int binary);
/* Parse the string TIMESTAMP into a time_t. The string may either be
seconds since Epoch or in the ISO 8601 format like
"20390815T143012". Returns 0 for an empty string or seconds since
Epoch. Leading spaces are skipped. If ENDP is not NULL, it will
point to the next non-parsed character in TIMESTRING. */
time_t _gpgme_parse_timestamp (const char *timestamp, char **endp);
gpgme_error_t _gpgme_map_gnupg_error (char *err);
/* Retrieve the environment variable NAME and return a copy of it in a
malloc()'ed buffer in *VALUE. If the environment variable is not
set, return NULL in *VALUE. */
gpgme_error_t _gpgme_getenv (const char *name, char **value);
#endif /* UTIL_H */
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