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/* util.h
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Copyright (C) 2000 Werner Koch (dd9jn)
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Copyright (C) 2001, 2002, 2003, 2004, 2005 g10 Code GmbH
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This file is part of GPGME.
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GPGME is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of
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the License, or (at your option) any later version.
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GPGME 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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#ifndef UTIL_H
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#define UTIL_H
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#include "gpgme.h"
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#define DIM(v) (sizeof(v)/sizeof((v)[0]))
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/*-- {posix,w32}-util.c --*/
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const char *_gpgme_get_gpg_path (void);
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const char *_gpgme_get_gpgsm_path (void);
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int _gpgme_get_conf_int (const char *key, int *value);
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/*-- replacement functions in <funcname>.c --*/
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#ifdef HAVE_CONFIG_H
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#ifndef HAVE_STPCPY
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static _GPGME_INLINE char *
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_gpgme_stpcpy (char *a, const char *b)
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{
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while (*b)
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*a++ = *b++;
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*a = 0;
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return a;
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}
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#define stpcpy(a,b) _gpgme_stpcpy ((a), (b))
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#endif /*!HAVE_STPCPY*/
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#if !HAVE_VASPRINTF
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#include <stdarg.h>
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int vasprintf (char **result, const char *format, va_list args);
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int asprintf (char **result, const char *format, ...);
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#endif
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#ifndef HAVE_TTYNAME_R
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int ttyname_r (int fd, char *buf, size_t buflen);
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#endif
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#endif
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/*-- conversion.c --*/
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/* Convert two hexadecimal digits from STR to the value they
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represent. Returns -1 if one of the characters is not a
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hexadecimal digit. */
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int _gpgme_hextobyte (const char *str);
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/* Decode the C formatted string SRC and store the result in the
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buffer *DESTP which is LEN bytes long. If LEN is zero, then a
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large enough buffer is allocated with malloc and *DESTP is set to
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the result. Currently, LEN is only used to specify if allocation
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is desired or not, the caller is expected to make sure that *DESTP
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is large enough if LEN is not zero. */
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gpgme_error_t _gpgme_decode_c_string (const char *src, char **destp,
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size_t len);
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/* Decode the percent escaped string SRC and store the result in the
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buffer *DESTP which is LEN bytes long. If LEN is zero, then a
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large enough buffer is allocated with malloc and *DESTP is set to
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the result. Currently, LEN is only used to specify if allocation
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is desired or not, the caller is expected to make sure that *DESTP
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is large enough if LEN is not zero. If BINARY is 1, then '\0'
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characters are allowed in the output. */
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gpgme_error_t _gpgme_decode_percent_string (const char *src, char **destp,
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size_t len, int binary);
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/* Parse the string TIMESTAMP into a time_t. The string may either be
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seconds since Epoch or in the ISO 8601 format like
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"20390815T143012". Returns 0 for an empty string or seconds since
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Epoch. Leading spaces are skipped. If ENDP is not NULL, it will
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point to the next non-parsed character in TIMESTRING. */
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time_t _gpgme_parse_timestamp (const char *timestamp, char **endp);
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gpgme_error_t _gpgme_map_gnupg_error (char *err);
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/* Retrieve the environment variable NAME and return a copy of it in a
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malloc()'ed buffer in *VALUE. If the environment variable is not
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set, return NULL in *VALUE. */
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gpgme_error_t _gpgme_getenv (const char *name, char **value);
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#endif /* UTIL_H */
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