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* Implement getDirectoryContents * Implement getStatusInfo * Implement setStatusInfo * Implement renameFile

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llvm-svn: 17780
This commit is contained in:
Reid Spencer 2004-11-14 22:08:36 +00:00
parent 59872e60ef
commit b73d75e4ff
1 changed files with 81 additions and 7 deletions
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88
lib/System/Unix/Path.cpp
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@ -21,6 +21,8 @@
#include <sys/stat.h>
#include <fcntl.h>
#include <fstream>
#include <utime.h>
#include <dirent.h>
namespace llvm {
using namespace sys;
@ -159,9 +161,21 @@ bool Path::hasMagicNumber(const std::string &Magic) const {
std::ifstream f(path.c_str());
f.read(buf, len);
buf[len] = '\0';
f.close();
return Magic == buf;
}
bool Path::getMagicNumber(std::string& Magic, unsigned len) const {
if (!isFile())
return false;
char buf[1 + len];
std::ifstream f(path.c_str());
f.read(buf,len);
buf[len] = '\0';
Magic = buf;
return true;
}
bool
Path::isBytecodeFile() const {
char buffer[ 4];
@ -170,7 +184,9 @@ Path::isBytecodeFile() const {
f.read(buffer, 4);
if (f.bad())
ThrowErrno("can't read file signature");
return 0 == memcmp(buffer,"llvc",4) || 0 == memcmp(buffer,"llvm",4);
return (buffer[0] == 'l' && buffer[1] == 'l' && buffer[2] == 'v' &&
(buffer[3] == 'c' || buffer[3] == 'm'));
}
bool
@ -224,16 +240,46 @@ Path::getLast() const {
}
void
Path::getStatusInfo(StatusInfo& info) const {
Path::getStatusInfo(StatusInfo& info) {
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.modTime.fromEpochTime(buf.st_mtime);
info.mode = buf.st_mode;
info.user = buf.st_uid;
info.group = buf.st_gid;
info.isDir = S_ISDIR(buf.st_mode);
if (info.isDir && path[path.length()-1] != '/')
path += '/';
}
bool
Path::getDirectoryContents(Vector& result) const {
if (!isDirectory())
return false;
DIR* direntries = ::opendir(path.c_str());
if (direntries == 0)
ThrowErrno(path + ": can't open directory");
result.clear();
struct dirent* de = ::readdir(direntries);
while (de != 0) {
if (de->d_name[0] != '.') {
Path aPath(path + (const char*)de->d_name);
struct stat buf;
if (0 != stat(aPath.path.c_str(), &buf))
ThrowErrno(aPath.path + ": can't get status");
if (S_ISDIR(buf.st_mode))
aPath.path += "/";
result.push_back(aPath);
}
de = ::readdir(direntries);
}
closedir(direntries);
return true;
}
bool
@ -363,6 +409,8 @@ Path::createDirectory( bool create_parents) {
int lastchar = path.length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
else
pathname[lastchar+1] = 0;
// If we're supposed to create intermediate directories
if ( create_parents ) {
@ -378,12 +426,14 @@ Path::createDirectory( bool create_parents) {
if (0 != mkdir(pathname, S_IRWXU | S_IRWXG))
ThrowErrno(std::string(pathname) + ": Can't create directory");
char* save = next;
next = strchr(pathname,'/');
next = strchr(next+1,'/');
*save = '/';
}
} else if (0 != mkdir(pathname, S_IRWXU | S_IRWXG)) {
ThrowErrno(std::string(pathname) + ": Can't create directory");
}
if (0 != access(pathname, F_OK | R_OK))
if (0 != mkdir(pathname, S_IRWXU | S_IRWXG))
ThrowErrno(std::string(pathname) + ": Can't create directory");
return true;
}
@ -409,6 +459,7 @@ Path::createTemporaryFile() {
// Append the filename filler
char pathname[MAXPATHLEN];
path.copy(pathname,MAXPATHLEN);
pathname[path.length()] = 0;
strcat(pathname,"XXXXXX");
int fd = ::mkstemp(pathname);
if (fd < 0) {
@ -439,6 +490,8 @@ Path::destroyDirectory(bool remove_contents) {
int lastchar = path.length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
else
pathname[lastchar+1] = 0;
if ( 0 != rmdir(pathname))
ThrowErrno(std::string(pathname) + ": Can't destroy directory");
}
@ -449,7 +502,28 @@ bool
Path::destroyFile() {
if (!isFile()) return false;
if (0 != unlink(path.c_str()))
ThrowErrno(std::string(path.c_str()) + ": Can't destroy file");
ThrowErrno(path + ": Can't destroy file");
return true;
}
bool
Path::renameFile(const Path& newName) {
if (!isFile()) return false;
if (0 != rename(path.c_str(), newName.c_str()))
ThrowErrno(std::string("can't rename ") + path + " as " + newName.get());
return true;
}
bool
Path::setStatusInfo(const StatusInfo& si) const {
if (!isFile()) return false;
struct utimbuf utb;
utb.actime = si.modTime.toPosixTime();
utb.modtime = utb.actime;
if (0 != ::utime(path.c_str(),&utb))
ThrowErrno(path + ": can't set file modification time");
if (0 != ::chmod(path.c_str(),si.mode))
ThrowErrno(path + ": can't set mode");
return true;
}