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*Put the StatusInfo type in the right section. *Provide the ability to rename a file.*Provide the ability to get/set stat(2) information.*Provide the ability to identify LLVM file types.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17760 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2004-11-14 21:52:22 +00:00
parent 8d2a8c3115
commit c5fe25314c
1 changed files with 72 additions and 19 deletions
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91
include/llvm/System/Path.h
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@ -43,6 +43,26 @@ namespace sys {
/// @since 1.4
/// @brief An abstraction for operating system paths.
class Path {
/// @name Types
/// @{
public:
typedef std::vector<Path> Vector;
/// This structure provides basic file system information about a file.
/// The structure is filled in by the getStatusInfo method.
/// @brief File status structure
struct StatusInfo {
StatusInfo() : modTime(0,0) { fileSize=0; mode=0; user=0; group=0; }
size_t fileSize; ///< Size of the file in bytes
TimeValue modTime; ///< Time of file's modification
uint32_t mode; ///< Mode of the file, if applicable
uint32_t user; ///< User ID of owner, if applicable
uint32_t group; ///< Group ID of owner, if applicable
bool isDir; ///< True if this is a directory.
};
/// @}
/// @name Constructors
/// @{
public:
@ -125,7 +145,7 @@ namespace sys {
static std::string GetDLLSuffix();
/// This is one of the very few ways in which a path can be constructed
/// with a syntactically invalid name. The only *legal* invalid name is an
/// with a syntactically invalid name. The only *legal* invalid name is an
/// empty one. Other invalid names are not permitted. Empty paths are
/// provided so that they can be used to indicate null or error results in
/// other lib/System functionality.
@ -235,6 +255,14 @@ namespace sys {
/// @brief Determine if file has a specific magic number
bool hasMagicNumber(const std::string& magic) const;
/// This function retrieves the first \p len bytes of the file associated
/// with \p this. These bytes are returned as the "magic number" in the
/// \p Magic parameter.
/// @returns true if the Path is a file and the magic number is retrieved,
/// false otherwise.
/// @brief Get the file's magic number.
bool getMagicNumber(std::string& Magic, unsigned len) const;
/// This function determines if the path name in the object references an
/// archive file by looking at its magic number.
/// @returns true if the file starts with the magic number for an archive
@ -307,25 +335,15 @@ namespace sys {
/// @brief Get the base name of the path
std::string getBasename() const;
/// This structure provides basic file system information about a file.
/// The structure is filled in by the getStatusInfo method.
/// @brief File status structure
struct StatusInfo {
StatusInfo() : modTime(0,0) { fileSize=0; mode=0; user=0; group=0; }
size_t fileSize; ///< Size of the file in bytes
TimeValue modTime; ///< Time of file's modification
uint64_t mode; ///< Mode of the file, if applicable
uint64_t user; ///< User ID of owner, if applicable
uint64_t group; ///< Group ID of owner, if applicable
};
/// This function builds a list of paths that are the names of the
/// files and directories in a directory.
/// @returns false if \p this is not a directory, true otherwise
/// @throws std::string if the directory cannot be searched
/// @brief Build a list of directory's contents.
bool getDirectoryContents(Vector& paths) const;
/// This function returns status information about the file.
/// @returns nothing
/// @throws std::string if an error occurs.
/// @brief Get file status.
void getStatusInfo(StatusInfo& stat) const;
/// @returns a c string containing the path name.
/// Obtain a 'C' string for the path name.
/// @returns a 'C' string containing the path name.
/// @brief Returns the path as a C string.
const char* const c_str() const { return path.c_str(); }
@ -339,6 +357,14 @@ namespace sys {
/// valid path being found.
void clear() { path.clear(); }
/// This function returns status information about the file. The type of
/// path (file or directory) is updated to reflect the actual contents
/// of the file system.
/// @returns nothing
/// @throws std::string if an error occurs.
/// @brief Get file status.
void getStatusInfo(StatusInfo& stat);
/// This method attempts to set the Path object to \p unverified_path
/// and interpret the name as a directory name. The \p unverified_path
/// is verified. If verification succeeds then \p unverified_path
@ -476,6 +502,20 @@ namespace sys {
/// @brief Destroy the file this Path refers to.
bool destroyFile();
/// This method renames the file referenced by \p this as \p newName. Both
/// files must exist before making this call.
/// @returns false if the Path does not refer to a file, true otherwise.
/// @throws std::string if there is an file system error.
/// @brief Rename one file as another.
bool renameFile(const Path& newName);
/// This method sets the access time, modification time, and permission
/// mode of the file associated with \p this as given by \p si.
/// @returns false if the Path does not refer to a file, true otherwise.
/// @throws std::string if the file could not be modified
/// @brief Set file times and mode.
bool setStatusInfo(const StatusInfo& si ) const ;
/// @}
/// @name Data
/// @{
@ -484,7 +524,20 @@ namespace sys {
/// @}
};
/// This enumeration delineates the kinds of files that LLVM knows about.
enum LLVMFileType {
UnknownFileType = 0, ///< Unrecognized file
BytecodeFileType = 1, ///< Uncompressed bytecode file
CompressedBytecodeFileType = 2, ///< Compressed bytecode file
ArchiveFileType = 3, ///< ar style archive file
};
/// This utility function allows any memory block to be examined in order
/// to determine its file type.
LLVMFileType IdentifyFileType(const char*magic, unsigned length);
}
}
// vim: sw=2