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Diffstat (limited to 'unit/atf-src/atf-c++/detail/fs.hpp')
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1 files changed, 387 insertions, 0 deletions
diff --git a/unit/atf-src/atf-c++/detail/fs.hpp b/unit/atf-src/atf-c++/detail/fs.hpp new file mode 100644 index 0000000..d6670f6 --- /dev/null +++ b/unit/atf-src/atf-c++/detail/fs.hpp @@ -0,0 +1,387 @@ +// Copyright (c) 2007 The NetBSD Foundation, Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// 1. Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// 2. 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. +// +// THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + +#if !defined(ATF_CXX_DETAIL_FS_HPP) +#define ATF_CXX_DETAIL_FS_HPP + +extern "C" { +#include <sys/types.h> +} + +#include <map> +#include <memory> +#include <ostream> +#include <set> +#include <stdexcept> +#include <string> + +extern "C" { +#include "atf-c/detail/fs.h" +} + +namespace atf { + +namespace io { +class systembuf; +} // namespace io + +namespace fs { + +// ------------------------------------------------------------------------ +// The "path" class. +// ------------------------------------------------------------------------ + +//! +//! \brief A class to represent a path to a file. +//! +//! The path class represents the route to a file or directory in the +//! file system. All file manipulation operations use this class to +//! represent their arguments as it takes care of normalizing user-provided +//! strings and ensures they are valid. +//! +//! It is important to note that the file pointed to by a path need not +//! exist. +//! +class path { + //! + //! \brief Internal representation of a path. + //! + atf_fs_path_t m_path; + +public: + //! \brief Constructs a new path from a user-provided string. + //! + //! This constructor takes a string, either provided by the program's + //! code or by the user and constructs a new path object. The string + //! is normalized to not contain multiple delimiters together and to + //! remove any trailing one. + //! + //! The input string cannot be empty. + //! + explicit path(const std::string&); + + //! + //! \brief Copy constructor. + //! + path(const path&); + + //! + //! \brief Copy constructor. + //! + path(const atf_fs_path_t *); + + //! + //! \brief Destructor for the path class. + //! + ~path(void); + + //! + //! \brief Returns a pointer to a C-style string representing this path. + //! + const char* c_str(void) const; + + //! + //! \brief Returns a pointer to the implementation data. + //! + const atf_fs_path_t* c_path(void) const; + + //! + //! \brief Returns a string representing this path. + //! XXX Really needed? + //! + std::string str(void) const; + + //! + //! \brief Returns the branch path of this path. + //! + //! Calculates and returns the branch path of this path. In other + //! words, it returns what the standard ::dirname function would return. + //! + path branch_path(void) const; + + //! + //! \brief Returns the leaf name of this path. + //! + //! Calculates and returns the leaf name of this path. In other words, + //! it returns what the standard ::basename function would return. + //! + std::string leaf_name(void) const; + + //! + //! \brief Checks whether this path is absolute or not. + //! + //! Returns a boolean indicating if this is an absolute path or not; + //! i.e. if it starts with a slash. + //! + bool is_absolute(void) const; + + //! + //! \brief Checks whether this path points to the root directory or not. + //! + //! Returns a boolean indicating if this is path points to the root + //! directory or not. The checks made by this are extremely simple (so + //! the results cannot always be trusted) but they are enough for our + //! modest sanity-checking needs. I.e. "/../" could return false. + //! + bool is_root(void) const; + + //! + //! \brief Converts the path to be absolute. + //! + //! \pre The path was not absolute. + //! + path to_absolute(void) const; + + //! + //! \brief Assignment operator. + //! + path& operator=(const path&); + + //! + //! \brief Checks if two paths are equal. + //! + bool operator==(const path&) const; + + //! + //! \brief Checks if two paths are different. + //! + bool operator!=(const path&) const; + + //! + //! \brief Concatenates a path with a string. + //! + //! Constructs a new path object that is the concatenation of the + //! left-hand path with the right-hand string. The string is normalized + //! before the concatenation, and a path delimiter is introduced between + //! the two components if needed. + //! + path operator/(const std::string&) const; + + //! + //! \brief Concatenates a path with another path. + //! + //! Constructs a new path object that is the concatenation of the + //! left-hand path with the right-hand one. A path delimiter is + //! introduced between the two components if needed. + //! + path operator/(const path&) const; + + //! + //! \brief Checks if a path has to be sorted before another one + //! lexicographically. + //! + bool operator<(const path&) const; +}; + +// ------------------------------------------------------------------------ +// The "file_info" class. +// ------------------------------------------------------------------------ + +class directory; + +//! +//! \brief A class that contains information about a file. +//! +//! The file_info class holds information about an specific file that +//! exists in the file system. +//! +class file_info { + atf_fs_stat_t m_stat; + +public: + //! + //! \brief The file's type. + //! + static const int blk_type; + static const int chr_type; + static const int dir_type; + static const int fifo_type; + static const int lnk_type; + static const int reg_type; + static const int sock_type; + static const int wht_type; + + //! + //! \brief Constructs a new file_info based on a given file. + //! + //! This constructor creates a new file_info object and fills it with + //! the data returned by ::stat when run on the given file, which must + //! exist. + //! + explicit file_info(const path&); + + //! + //! \brief The copy constructor. + //! + file_info(const file_info&); + + //! + //! \brief The destructor. + //! + ~file_info(void); + + //! + //! \brief Returns the device containing the file. + //! + dev_t get_device(void) const; + + //! + //! \brief Returns the file's inode. + //! + ino_t get_inode(void) const; + + //! + //! \brief Returns the file's permissions. + //! + mode_t get_mode(void) const; + + //! + //! \brief Returns the file's size. + //! + off_t get_size(void) const; + + //! + //! \brief Returns the file's type. + //! + int get_type(void) const; + + //! + //! \brief Returns whether the file is readable by its owner or not. + //! + bool is_owner_readable(void) const; + + //! + //! \brief Returns whether the file is writable by its owner or not. + //! + bool is_owner_writable(void) const; + + //! + //! \brief Returns whether the file is executable by its owner or not. + //! + bool is_owner_executable(void) const; + + //! + //! \brief Returns whether the file is readable by the users belonging + //! to its group or not. + //! + bool is_group_readable(void) const; + + //! + //! \brief Returns whether the file is writable the users belonging to + //! its group or not. + //! + bool is_group_writable(void) const; + + //! + //! \brief Returns whether the file is executable by the users + //! belonging to its group or not. + //! + bool is_group_executable(void) const; + + //! + //! \brief Returns whether the file is readable by people different + //! than the owner and those belonging to the group or not. + //! + bool is_other_readable(void) const; + + //! + //! \brief Returns whether the file is write by people different + //! than the owner and those belonging to the group or not. + //! + bool is_other_writable(void) const; + + //! + //! \brief Returns whether the file is executable by people different + //! than the owner and those belonging to the group or not. + //! + bool is_other_executable(void) const; +}; + +// ------------------------------------------------------------------------ +// The "directory" class. +// ------------------------------------------------------------------------ + +//! +//! \brief A class representing a file system directory. +//! +//! The directory class represents a group of files in the file system and +//! corresponds to exactly one directory. +//! +class directory : public std::map< std::string, file_info > { +public: + //! + //! \brief Constructs a new directory. + //! + //! Constructs a new directory object representing the given path. + //! The directory must exist at creation time as the contents of the + //! class are gathered from it. + //! + directory(const path&); + + //! + //! \brief Returns the file names of the files in the directory. + //! + //! Returns the leaf names of all files contained in the directory. + //! I.e. the keys of the directory map. + //! + std::set< std::string > names(void) const; +}; + +// ------------------------------------------------------------------------ +// Free functions. +// ------------------------------------------------------------------------ + +//! +//! \brief Checks if the given path exists. +//! +bool exists(const path&); + +//! +//! \brief Looks for the given program in the PATH. +//! +//! Given a program name (without slashes) looks for it in the path and +//! returns its full path name if found, otherwise an empty path. +//! +bool have_prog_in_path(const std::string&); + +//! +//! \brief Checks if the given path exists, is accessible and is executable. +//! +bool is_executable(const path&); + +//! +//! \brief Removes a given file. +//! +void remove(const path&); + +//! +//! \brief Removes an empty directory. +//! +void rmdir(const path&); + +} // namespace fs +} // namespace atf + +#endif // !defined(ATF_CXX_DETAIL_FS_HPP) |