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103 lines
3.2 KiB
C++
103 lines
3.2 KiB
C++
//===- Support/FileUtilities.h - File System Utilities ----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by the LLVM research group and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines a family of utility functions which are useful for doing
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// various things with files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SUPPORT_FILEUTILITIES_H
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#define SUPPORT_FILEUTILITIES_H
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#include <string>
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namespace llvm {
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/// CheckMagic - Returns true IFF the file named FN begins with Magic. FN must
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/// name a readable file.
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///
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bool CheckMagic (const std::string &FN, const std::string &Magic);
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/// IsArchive - Returns true IFF the file named FN appears to be a "ar" library
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/// archive. The file named FN must exist.
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///
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bool IsArchive (const std::string &FN);
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/// IsBytecode - Returns true IFF the file named FN appears to be an LLVM
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/// bytecode file. The file named FN must exist.
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///
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bool IsBytecode (const std::string &FN);
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/// FileOpenable - Returns true IFF Filename names an existing regular file
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/// which we can successfully open.
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///
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bool FileOpenable (const std::string &Filename);
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/// DiffFiles - Compare the two files specified, returning true if they are
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/// different or if there is a file error. If you specify a string to fill in
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/// for the error option, it will set the string to an error message if an error
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/// occurs, allowing the caller to distinguish between a failed diff and a file
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/// system error.
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///
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bool DiffFiles(const std::string &FileA, const std::string &FileB,
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std::string *Error = 0);
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/// MoveFileOverIfUpdated - If the file specified by New is different than Old,
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/// or if Old does not exist, move the New file over the Old file. Otherwise,
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/// remove the New file.
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///
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void MoveFileOverIfUpdated(const std::string &New, const std::string &Old);
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/// removeFile - Delete the specified file
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///
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void removeFile(const std::string &Filename);
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/// getUniqueFilename - Return a filename with the specified prefix. If the
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/// file does not exist yet, return it, otherwise add a suffix to make it
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/// unique.
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///
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std::string getUniqueFilename(const std::string &FilenameBase);
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///
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/// Method: MakeFileExecutable()
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///
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/// Description:
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/// This method turns on whatever access attributes are needed to make the
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/// specified file executable.
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///
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/// Return value:
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/// True - The operation succeeded.
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/// False - The operation failed.
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///
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/// Notes:
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/// In case of failure, the file's access attributes are unspecified.
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///
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bool MakeFileExecutable (const std::string & Filename);
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///
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/// Method: MakeFileReadable()
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///
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/// Description:
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/// This method turns on whatever access attributes are needed to make the
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/// specified file readable.
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///
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/// Return value:
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/// True - The operation succeeded.
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/// False - The operation failed.
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///
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/// Notes:
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/// In case of failure, the file's access attributes are unspecified.
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///
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bool MakeFileReadable (const std::string & Filename);
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} // End llvm namespace
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#endif
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