Extend MemoryBuffer::getFile() to take an optional "stat" structure
pointer. If given, the structure will be set with the stat information from
the file actually read.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98575 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/MemoryBuffer.cpp b/lib/Support/MemoryBuffer.cpp
index eb046d0..345a78c 100644
--- a/lib/Support/MemoryBuffer.cpp
+++ b/lib/Support/MemoryBuffer.cpp
@@ -136,10 +136,11 @@
/// returns an empty buffer.
MemoryBuffer *MemoryBuffer::getFileOrSTDIN(StringRef Filename,
std::string *ErrStr,
- int64_t FileSize) {
+ int64_t FileSize,
+ struct stat *FileInfo) {
if (Filename == "-")
return getSTDIN();
- return getFile(Filename, ErrStr, FileSize);
+ return getFile(Filename, ErrStr, FileSize, FileInfo);
}
//===----------------------------------------------------------------------===//
@@ -169,7 +170,7 @@
}
MemoryBuffer *MemoryBuffer::getFile(StringRef Filename, std::string *ErrStr,
- int64_t FileSize) {
+ int64_t FileSize, struct stat *FileInfo) {
int OpenFlags = 0;
#ifdef O_BINARY
OpenFlags |= O_BINARY; // Open input file in binary mode on win32.
@@ -183,15 +184,17 @@
// If we don't know the file size, use fstat to find out. fstat on an open
// file descriptor is cheaper than stat on a random path.
- if (FileSize == -1) {
- struct stat FileInfo;
+ if (FileSize == -1 || FileInfo) {
+ struct stat MyFileInfo;
+ struct stat *FileInfoPtr = FileInfo? FileInfo : &MyFileInfo;
+
// TODO: This should use fstat64 when available.
- if (fstat(FD, &FileInfo) == -1) {
+ if (fstat(FD, FileInfoPtr) == -1) {
if (ErrStr) *ErrStr = strerror(errno);
::close(FD);
return 0;
}
- FileSize = FileInfo.st_size;
+ FileSize = FileInfoPtr->st_size;
}