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/*
This file is part of the KDE libraries
Copyright (c) 2003 Oswald Buddenhagen <ossi@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef _KSHELL_H
#define _KSHELL_H
#include <tqstring.h>
#include <tqstringlist.h>
#include "kdelibs_export.h"
/**
* \namespace KShell
* Provides some basic POSIX shell and bash functionality.
* @see KStringHandler
*
* @since 3.2
*/
namespace KShell {
/**
* Flags for splitArgs().
*/
enum Options {
NoOptions = 0,
/**
* Perform tilde expansion.
*/
TildeExpand = 1,
/**
* Bail out if a non-quoting and not quoted shell meta character is encoutered.
* Meta characters are the command separators @p semicolon and @p ampersand,
* the redirection symbols @p less-than, @p greater-than and the @p pipe @p symbol,
* the grouping symbols opening and closing @p parens and @p braces, the command
* substitution symbol @p backquote, the generic substitution symbol @p dollar
* (if not followed by an apostrophe), the wildcards @p asterisk and
* @p question @p mark, and the comment symbol @p hash @p mark. Additionally,
* a variable assignment in the first word is recognized.
*/
AbortOnMeta = 2
};
/**
* Status codes from splitArgs()
*/
enum Errors {
/**
* Success.
*/
NoError = 0,
/**
* Indicates a parsing error, like an unterminated quoted string.
*/
BadQuoting,
/**
* The AbortOnMeta flag was set and a shell meta character
* was encoutered.
*/
FoundMeta
};
/**
* Splits @p cmd according to POSIX shell word splitting and quoting rules.
* Can optionally perform tilde expansion and/or abort if it finds shell
* meta characters it cannot process.
*
* @param cmd the command to split
* @param flags operation flags, see Options
* @param err if not NULL, a status code will be stored at the pointer
* target, see Errors
* @return a list of unquoted words or an empty list if an error occurred
*/
TDECORE_EXPORT TQStringList splitArgs( const TQString &cmd, int flags = 0, int *err = 0 );
/**
* Quotes and joins @p args together according to POSIX shell rules.
*
* @param args a list of strings to quote and join
* @return a command suitable for shell execution
*/
TDECORE_EXPORT TQString joinArgs( const TQStringList &args );
/**
* Same as above, but $'' is used instead of '' for the quoting.
* The output is suitable for splitArgs(), bash, zsh and possibly
* other bourne-compatible shells, but not for plain sh. The advantage
* is, that control characters (ASCII less than 32) are escaped into
* human-readable strings.
*
* @param args a list of strings to quote and join
* @return a command suitable for shell execution
*/
TDECORE_EXPORT TQString joinArgsDQ( const TQStringList &args );
/**
* Quotes and joins @p argv together according to POSIX shell rules.
*
* @param argv an array of c strings to quote and join.
* The strings are expected to be in local-8-bit encoding.
* @param argc maximal number of strings in @p argv. if not supplied,
* @p argv must be null-terminated.
* @return a command suitable for shell execution
*/
TDECORE_EXPORT TQString joinArgs( const char * const *argv, int argc = -1 );
/**
* Performs tilde expansion on @p path. Interprets "~/path" and
* "~user/path".
*
* @param path the path to tilde-expand
* @return the expanded path
*/
TDECORE_EXPORT TQString tildeExpand( const TQString &path );
/**
* Obtain a @p user's home directory.
*
* @param user The name of the user whose home dir should be obtained.
* An empty string denotes the current user.
* @return The user's home directory.
*/
TDECORE_EXPORT TQString homeDir( const TQString &user );
}
#endif /* _KSHELL_H */
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