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common: Consolidate Assuan server argument handling.

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* common/Makefile.am (common_sources): Add new files.
* common/server-help.c: New file.
* common/server-help.h: Likewise.
* agent/command.c: Drop argument handling primitives in favor of using
the consolidated ones.
* dirmngr/server.c: Likewise.
* g10/server.c: Likewise.
* g13/server.c: Likewise.
* scd/command.c: Likewise.
* sm/server.c: Likewise.

Signed-off-by: Justus Winter <justus@g10code.com>
This commit is contained in:
Justus Winter 2016-03-02 14:14:33 +01:00
parent 9a1778abca
commit e77c85577d
9 changed files with 207 additions and 298 deletions
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62
common/server-help.h Normal file
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/* server-help.h - Helper functions for writing Assuan servers.
* Copyright (C) 2003, 2009, 2010 g10 Code GmbH
*
* This file is part of GnuPG.
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of either
*
* - the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* or
*
* - the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* or both in parallel, as here.
*
* This file 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GNUPG_COMMON_SERVER_HELP_H
#define GNUPG_COMMON_SERVER_HELP_H
/* Skip over options in LINE.
Blanks after the options are also removed. Options are indicated
by two leading dashes followed by a string consisting of non-space
characters. The special option "--" indicates an explicit end of
options; all what follows will not be considered an option. The
first no-option string also indicates the end of option parsing. */
char *skip_options (const char *line);
/* Check whether the option NAME appears in LINE. */
int has_option (const char *line, const char *name);
/* Same as has_option but only considers options at the begin of the
line. This is useful for commands which allow arbitrary strings on
the line. */
int has_leading_option (const char *line, const char *name);
/* Same as has_option but does only test for the name of the option
and ignores an argument, i.e. with NAME being "--hash" it would
return a pointer for "--hash" as well as for "--hash=foo". If
there is no such option NULL is returned. The pointer returned
points right behind the option name, this may be an equal sign, Nul
or a space. */
const char *has_option_name (const char *line, const char *name);
/* Return a pointer to the argument of the option with NAME. If such
an option is not given, NULL is returned. */
char *option_value (const char *line, const char *name);
#endif /* GNUPG_COMMON_SERVER_HELP_H */