-#include "SystemUtils.h"
-#include <algorithm>
-#include <fstream>
-#include <iostream>
-#include <cstdlib>
-#include "Config/sys/types.h"
-#include "Config/sys/stat.h"
-#include "Config/fcntl.h"
-#include "Config/sys/wait.h"
-#include "Config/unistd.h"
-#include "Config/errno.h"
-
-/// removeFile - Delete the specified file
-///
-void removeFile(const std::string &Filename) {
- unlink(Filename.c_str());
-}
-
-/// getUniqueFilename - Return a filename with the specified prefix. If the
-/// file does not exist yet, return it, otherwise add a suffix to make it
-/// unique.
-///
-std::string getUniqueFilename(const std::string &FilenameBase) {
- if (!std::ifstream(FilenameBase.c_str()))
- return FilenameBase; // Couldn't open the file? Use it!
-
- // Create a pattern for mkstemp...
- char *FNBuffer = new char[FilenameBase.size()+8];
- strcpy(FNBuffer, FilenameBase.c_str());
- strcpy(FNBuffer+FilenameBase.size(), "-XXXXXX");
-
- // Agree on a temporary file name to use....
- int TempFD;
- if ((TempFD = mkstemp(FNBuffer)) == -1) {
- std::cerr << "bugpoint: ERROR: Cannot create temporary file in the current "
- << " directory!\n";
- exit(1);
- }
-
- // We don't need to hold the temp file descriptor... we will trust that noone
- // will overwrite/delete the file while we are working on it...
- close(TempFD);
- std::string Result(FNBuffer);
- delete[] FNBuffer;
- return Result;
-}
-
-/// isExecutableFile - This function returns true if the filename specified
-/// exists and is executable.
-///
-bool isExecutableFile(const std::string &ExeFileName) {
- struct stat Buf;
- if (stat(ExeFileName.c_str(), &Buf))
- return false; // Must not be executable!
-
- if (!(Buf.st_mode & S_IFREG))
- return false; // Not a regular file?
-
- if (Buf.st_uid == getuid()) // Owner of file?
- return Buf.st_mode & S_IXUSR;
- else if (Buf.st_gid == getgid()) // In group of file?
- return Buf.st_mode & S_IXGRP;
- else // Unrelated to file?
- return Buf.st_mode & S_IXOTH;
-}
-
-
-// FindExecutable - Find a named executable, giving the argv[0] of bugpoint.
-// This assumes the executable is in the same directory as bugpoint itself.
-// If the executable cannot be found, return an empty string.
-//
-std::string FindExecutable(const std::string &ExeName,
- const std::string &BugPointPath) {
- // First check the directory that bugpoint is in. We can do this if
- // BugPointPath contains at least one / character, indicating that it is a
- // relative path to bugpoint itself.
- //
- std::string Result = BugPointPath;
- while (!Result.empty() && Result[Result.size()-1] != '/')
- Result.erase(Result.size()-1, 1);
-
- if (!Result.empty()) {
- Result += ExeName;
- if (isExecutableFile(Result)) return Result; // Found it?
- }
-
- // Okay, if the path to bugpoint didn't tell us anything, try using the PATH
- // environment variable.
- const char *PathStr = getenv("PATH");
- if (PathStr == 0) return "";
-
- // Now we have a colon seperated list of directories to search... try them...
- unsigned PathLen = strlen(PathStr);
- while (PathLen) {
- // Find the first colon...
- const char *Colon = std::find(PathStr, PathStr+PathLen, ':');
-
- // Check to see if this first directory contains the executable...
- std::string FilePath = std::string(PathStr, Colon) + '/' + ExeName;
- if (isExecutableFile(FilePath))
- return FilePath; // Found the executable!
-
- // Nope it wasn't in this directory, check the next range!
- PathLen -= Colon-PathStr;
- PathStr = Colon;
- while (*PathStr == ':') { // Advance past colons
- PathStr++;
- PathLen--;