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* Implement getStatusInfo for getting stat(2) like information

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* Implement createTemporaryFile for mkstemp(3) functionality
* Fix isBytecodeFile to accept llvc magic # (compressed) as bytecode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17654 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2004-11-09 20:26:31 +00:00
parent 31391b6792
commit 9195f37c5f
3 changed files with 108 additions and 10 deletions
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44
lib/System/Unix/Path.cpp
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@@ -164,10 +164,13 @@ bool Path::hasMagicNumber(const std::string &Magic) const {
bool
Path::isBytecodeFile() const {
if (readable()) {
return hasMagicNumber("llvm");
}
return false;
char buffer[ 4];
buffer[0] = 0;
std::ifstream f(path.c_str());
f.read(buffer, 4);
if (f.bad())
ThrowErrno("can't read file signature");
return 0 == memcmp(buffer,"llvc",4) || 0 == memcmp(buffer,"llvm",4);
}
bool
@@ -220,6 +223,19 @@ Path::getLast() const {
return path.substr(pos+1);
}
void
Path::getStatusInfo(StatusInfo& info) const {
struct stat buf;
if (0 != stat(path.c_str(), &buf)) {
ThrowErrno(std::string("Can't get status: ")+path);
}
info.fileSize = buf.st_size;
info.modTime.fromPosixTime(buf.st_mtime);
info.mode = buf.st_mode;
info.user = buf.st_uid;
info.group = buf.st_gid;
}
bool
Path::setDirectory(const std::string& a_path) {
if (a_path.size() == 0)
@@ -379,12 +395,30 @@ Path::createFile() {
// Create the file
int fd = ::creat(path.c_str(), S_IRUSR | S_IWUSR);
if (fd < 0)
ThrowErrno(std::string(path.c_str()) + ": Can't create file");
ThrowErrno(path + ": Can't create file");
::close(fd);
return true;
}
bool
Path::createTemporaryFile() {
// Make sure we're dealing with a file
if (!isFile()) return false;
// Append the filename filler
char pathname[MAXPATHLEN];
path.copy(pathname,MAXPATHLEN);
strcat(pathname,"XXXXXX");
int fd = ::mkstemp(pathname);
if (fd < 0) {
ThrowErrno(path + ": Can't create temporary file");
}
path = pathname;
::close(fd);
return true;
}
bool
Path::destroyDirectory(bool remove_contents) {
// Make sure we're dealing with a directory