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/*
* Copyright (c) 2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Nathan Binkert
* Chris Emmons
*/
#ifndef __BASE_OUTPUT_HH__
#define __BASE_OUTPUT_HH__
#include <ios>
#include <map>
#include <string>
/** Interface for creating files in a gem5 output directory. */
class OutputDirectory
{
private:
/** File names and associated stream handles */
typedef std::map<std::string, std::ostream *> map_t;
/** Open file streams within this directory */
map_t files;
/** Name of this directory */
std::string dir;
/** System-specific path separator character */
static const char PATH_SEPARATOR = '/';
/**
* Returns relative file names prepended with name of this directory.
* Returns absolute file names unaltered.
*
* @param name file name to prepend with directory name
* @return file name prepended with base directory name or unaltered
* absolute file name
*/
std::string resolve(const std::string &name) const;
protected:
/**
* Determines whether given file name corresponds to standard output
* streams.
*
* @param name name of file to check
* @return output stream for standard output or error stream if name
* corresponds to one or the other; NULL otherwise
*/
std::ostream *checkForStdio(const std::string &name) const;
public:
/** Constructor. */
OutputDirectory();
/** Destructor. */
~OutputDirectory();
/** Opens a file (optionally compressed).
*
* Will open a file as a compressed stream if filename ends in .gz.
*
* @param filename file to open
* @param mode attributes to open file with
* @return stream pointer to opened file; will cause sim fail on error
*/
std::ostream *openFile(const std::string &filename,
std::ios_base::openmode mode = std::ios::trunc);
/**
* Sets name of this directory.
* @param dir name of this directory
*/
void setDirectory(const std::string &dir);
/**
* Gets name of this directory.
* @return name of this directory
*/
const std::string &directory() const;
/**
* Creates a file in this directory (optionally compressed).
*
* Will open a file as a compressed stream if filename ends in .gz.
*
* @param name name of file to create (without this directory's name
* leading it)
* @param binary true to create a binary file; false otherwise
* @return stream to the opened file
*/
std::ostream *create(const std::string &name, bool binary = false);
/**
* Closes a file stream.
*
* Stream must have been opened through this interface, or sim will fail.
*
* @param openStream open stream to close
*/
void close(std::ostream *openStream);
/**
* Finds stream associated with a file.
* @param name of file
* @return stream to specified file or NULL if file does not exist
*/
std::ostream *find(const std::string &name) const;
/**
* Returns true if stream is open and not standard output or error.
* @param os output stream to evaluate
* @return true if os is non-NULL and not cout or cerr
*/
static bool isFile(const std::ostream *os);
/**
* Determines whether a file name corresponds to a file in this directory.
* @param name name of file to evaluate
* @return true iff file has been opened in this directory or exists on the
* file system within this directory
*/
bool isFile(const std::string &name) const;
/**
* Returns true if stream is open and not standard output or error.
* @param os output stream to evaluate
* @return true if os is non-NULL and not cout or cerr
*/
static inline bool isFile(const std::ostream &os) {
return isFile(&os);
}
/**
* Creates a subdirectory within this directory.
* @param name name of subdirectory
* @return the new subdirectory's name suffixed with a path separator
*/
std::string createSubdirectory(const std::string &name) const;
/**
* Removes a specified file or subdirectory.
*
* Will cause sim to fail for most errors. However, it will only warn the
* user if a directory could not be removed. This is in place to
* accommodate slow file systems where file deletions within a subdirectory
* may not be recognized quickly enough thereby causing the subsequent call
* to remove the directory to fail (seemingly unempty directory).
*
* @param name name of file or subdirectory to remove; name should not
* be prepended with the name of this directory object
* @param recursive set to true to attempt to recursively delete a
* subdirectory and its contents
*/
void remove(const std::string &name, bool recursive=false);
};
extern OutputDirectory simout;
#endif // __BASE_OUTPUT_HH__
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