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authorChris Lattner <sabre@nondot.org>2004-06-07 19:37:24 +0000
committerChris Lattner <sabre@nondot.org>2004-06-07 19:37:24 +0000
commitfa5fe7c8b88df6e27ac1dacd8b27aa1c3ef6b25d (patch)
treeafbc0ac824e6775997a92d66cc81ba57c8d118d0 /lib/Support
parentb4db5f3e4b24bfc515bc615b2b6256083c7ef508 (diff)
Make all of this functionality work directly on win32. Properly conditionalize
system specific stuff on HAVE_MKSTEMP git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14051 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support')
-rw-r--r--lib/Support/FileUtilities.cpp42
1 files changed, 29 insertions, 13 deletions
diff --git a/lib/Support/FileUtilities.cpp b/lib/Support/FileUtilities.cpp
index 9844835daa..09542c3fab 100644
--- a/lib/Support/FileUtilities.cpp
+++ b/lib/Support/FileUtilities.cpp
@@ -13,11 +13,13 @@
//===----------------------------------------------------------------------===//
#include "Support/FileUtilities.h"
+#include "Support/DataTypes.h"
#include "Config/unistd.h"
#include "Config/fcntl.h"
-#include "Config/sys/stat.h"
#include "Config/sys/types.h"
+#include "Config/sys/stat.h"
#include "Config/sys/mman.h"
+#include "Config/alloca.h"
#include <cerrno>
#include <cstdio>
#include <fstream>
@@ -28,10 +30,10 @@ using namespace llvm;
/// name a readable file.
///
bool llvm::CheckMagic(const std::string &FN, const std::string &Magic) {
- char buf[1 + Magic.size ()];
- std::ifstream f (FN.c_str ());
- f.read (buf, Magic.size ());
- buf[Magic.size ()] = '\0';
+ char *buf = (char*)alloca(1 + Magic.size());
+ std::ifstream f(FN.c_str());
+ f.read(buf, Magic.size());
+ buf[Magic.size()] = '\0';
return Magic == buf;
}
@@ -41,7 +43,7 @@ bool llvm::CheckMagic(const std::string &FN, const std::string &Magic) {
bool llvm::IsArchive(const std::string &FN) {
// Inspect the beginning of the file to see if it contains the "ar"
// library archive format magic string.
- return CheckMagic (FN, "!<arch>\012");
+ return CheckMagic(FN, "!<arch>\012");
}
/// IsBytecode - Returns true IFF the file named FN appears to be an LLVM
@@ -179,8 +181,11 @@ std::string llvm::getUniqueFilename(const std::string &FilenameBase) {
strcpy(FNBuffer+FilenameBase.size(), "-XXXXXX");
// Agree on a temporary file name to use....
+#if defined(HAVE_MKSTEMP) && !defined(_MSC_VER)
int TempFD;
if ((TempFD = mkstemp(FNBuffer)) == -1) {
+ // FIXME: this should return an emtpy string or something and allow the
+ // caller to deal with the error!
std::cerr << "bugpoint: ERROR: Cannot create temporary file in the current "
<< " directory!\n";
exit(1);
@@ -189,22 +194,33 @@ std::string llvm::getUniqueFilename(const std::string &FilenameBase) {
// We don't need to hold the temp file descriptor... we will trust that no one
// will overwrite/delete the file while we are working on it...
close(TempFD);
+#else
+ // If we don't have mkstemp, use the old and obsolete mktemp function.
+ if (mktemp(FNBuffer) == 0) {
+ // FIXME: this should return an emtpy string or something and allow the
+ // caller to deal with the error!
+ std::cerr << "bugpoint: ERROR: Cannot create temporary file in the current "
+ << " directory!\n";
+ exit(1);
+ }
+#endif
+
std::string Result(FNBuffer);
delete[] FNBuffer;
return Result;
}
-static bool AddPermissionsBits (const std::string &Filename, mode_t bits) {
+static bool AddPermissionsBits (const std::string &Filename, int bits) {
// Get the umask value from the operating system. We want to use it
// when changing the file's permissions. Since calling umask() sets
// the umask and returns its old value, we must call it a second
// time to reset it to the user's preference.
- mode_t mask = umask (0777); // The arg. to umask is arbitrary...
- umask (mask);
+ int mask = umask(0777); // The arg. to umask is arbitrary.
+ umask(mask); // Restore the umask.
// Get the file's current mode.
struct stat st;
- if ((stat (Filename.c_str(), &st)) == -1)
+ if ((stat(Filename.c_str(), &st)) == -1)
return false;
// Change the file to have whichever permissions bits from 'bits'
@@ -259,8 +275,8 @@ unsigned long long llvm::getFileTimestamp(const std::string &Filename) {
/// failure, return null.
void *llvm::ReadFileIntoAddressSpace(const std::string &Filename,
unsigned &Length) {
-#ifdef HAVE_MMAP_FILE
- Length = getFileSize(Filename);
+#if defined(HAVE_MMAP_FILE) && !defined(_MSC_VER)
+ Length = (unsigned)getFileSize(Filename);
if ((int)Length == -1) return 0;
FDHandle FD(open(Filename.c_str(), O_RDONLY));
@@ -287,7 +303,7 @@ void *llvm::ReadFileIntoAddressSpace(const std::string &Filename,
/// UnmapFileFromAddressSpace - Remove the specified file from the current
/// address space.
void llvm::UnmapFileFromAddressSpace(void *Buffer, unsigned Length) {
-#ifdef HAVE_MMAP_FILE
+#if defined(HAVE_MMAP_FILE) && !defined(_MSC_VER)
if (Length)
munmap((char*)Buffer, Length);
else