Porting of Unix implementation to Win32.

Patch contributed by Jeff Cohen. Thanks Jeff!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16396 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2004-09-18 19:29:16 +00:00
parent 622e220ca7
commit d0c9e0ee0d
2 changed files with 380 additions and 96 deletions

View File

@ -6,6 +6,7 @@
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
// Modified by Henrik Bach to comply with at least MinGW.
// Ported to Win32 by Jeff Cohen.
//
//===----------------------------------------------------------------------===//
//
@ -18,18 +19,10 @@
//=== is guaranteed to work on *all* Win32 variants.
//===----------------------------------------------------------------------===//
#include <llvm/Config/config.h>
#include <limits.h>
#include <stdarg.h>
#include <assert.h>
#include <fcntl.h>
#include <sys/stat.h>
#include "Win32.h"
#include <llvm/System/Path.h>
#include <windef.h>
#include <winbase.h>
#define MAXPATHLEN PATH_MAX
#include <fstream>
#include <malloc.h>
namespace llvm {
namespace sys {
@ -38,23 +31,47 @@ bool
Path::is_valid() const {
if (path.empty())
return false;
/*hb: char pathname[MAXPATHLEN];
if (0 == realpath(path.c_str(), pathname))
if (errno != EACCES && errno != EIO && errno != ENOENT && errno !=
ENOTDIR)
return false;*/
return true;
// On Unix, the realpath function is used, which only requires that the
// directories leading up the to final file name are valid. The file itself
// need not exist. To get this behavior on Windows, we must elide the file
// name manually.
Path dir(*this);
dir.elide_file();
if (dir.path.empty())
return true;
DWORD attr = GetFileAttributes(dir.path.c_str());
return (attr != INVALID_FILE_ATTRIBUTES) && (attr & FILE_ATTRIBUTE_DIRECTORY);
}
static Path *TempDirectory = NULL;
Path
Path::GetTemporaryDirectory() {
char pathname[MAXPATHLEN];
if (0 == GetTempPath(MAXPATHLEN,pathname))
ThrowError(std::string(pathname) + ": Can't create temporary directory");
if (TempDirectory)
return *TempDirectory;
char pathname[MAX_PATH];
if (!GetTempPath(MAX_PATH, pathname))
ThrowError("Can't determine temporary directory");
Path result;
result.set_directory(pathname);
assert(result.is_valid() && "GetTempPath didn't create a valid pathname!");
return result;
// Append a subdirectory passed on our process id so multiple LLVMs don't
// step on each other's toes.
sprintf(pathname, "LLVM_%u", GetCurrentProcessId());
result.append_directory(pathname);
// If there's a directory left over from a previous LLVM execution that
// happened to have the same process id, get rid of it.
result.destroy_directory(true);
// And finally (re-)create the empty directory.
result.create_directory(false);
TempDirectory = new Path(result);
return *TempDirectory;
}
Path::Path(std::string unverified_path)
@ -69,6 +86,7 @@ Path::Path(std::string unverified_path)
ThrowError(unverified_path + ": path is not valid");
}
// FIXME: the following set of functions don't map to Windows very well.
Path
Path::GetRootDirectory() {
Path result;
@ -76,6 +94,59 @@ Path::GetRootDirectory() {
return result;
}
static inline bool IsLibrary(Path& path, const std::string& basename) {
if (path.append_file(std::string("lib") + basename)) {
if (path.append_suffix(Path::GetDLLSuffix()) && path.readable())
return true;
else if (path.elide_suffix() && path.append_suffix("a") && path.readable())
return true;
else if (path.elide_suffix() && path.append_suffix("o") && path.readable())
return true;
else if (path.elide_suffix() && path.append_suffix("bc") && path.readable())
return true;
} else if (path.elide_file() && path.append_file(basename)) {
if (path.append_suffix(Path::GetDLLSuffix()) && path.readable())
return true;
else if (path.elide_suffix() && path.append_suffix("a") && path.readable())
return true;
else if (path.elide_suffix() && path.append_suffix("o") && path.readable())
return true;
else if (path.elide_suffix() && path.append_suffix("bc") && path.readable())
return true;
}
path.clear();
return false;
}
Path
Path::GetLibraryPath(const std::string& basename,
const std::vector<std::string>& LibPaths) {
Path result;
// Try the paths provided
for (std::vector<std::string>::const_iterator I = LibPaths.begin(),
E = LibPaths.end(); I != E; ++I ) {
if (result.set_directory(*I) && IsLibrary(result,basename))
return result;
}
// Try the LLVM lib directory in the LLVM install area
//if (result.set_directory(LLVM_LIBDIR) && IsLibrary(result,basename))
// return result;
// Try /usr/lib
if (result.set_directory("/usr/lib/") && IsLibrary(result,basename))
return result;
// Try /lib
if (result.set_directory("/lib/") && IsLibrary(result,basename))
return result;
// Can't find it, give up and return invalid path.
result.clear();
return result;
}
Path
Path::GetSystemLibraryPath1() {
return Path("/lib/");
@ -93,9 +164,6 @@ Path::GetLLVMDefaultConfigDir() {
Path
Path::GetLLVMConfigDir() {
Path result;
if (result.set_directory(LLVM_ETCDIR))
return result;
return GetLLVMDefaultConfigDir();
}
@ -109,25 +177,80 @@ Path::GetUserHomeDirectory() {
}
return GetRootDirectory();
}
// FIXME: the above set of functions don't map to Windows very well.
bool
Path::is_file() const {
return (is_valid() && path[path.length()-1] != '/');
}
bool
Path::is_directory() const {
return (is_valid() && path[path.length()-1] == '/');
}
std::string
Path::get_basename() const {
// Find the last slash
size_t slash = path.rfind('/');
if (slash == std::string::npos)
slash = 0;
else
slash++;
return path.substr(slash, path.rfind('.'));
}
bool Path::has_magic_number(const std::string &Magic) const {
size_t len = Magic.size();
char *buf = reinterpret_cast<char *>(_alloca(len+1));
std::ifstream f(path.c_str());
f.read(buf, len);
buf[len] = '\0';
return Magic == buf;
}
bool
Path::is_bytecode_file() const {
if (readable()) {
return has_magic_number("llvm");
}
return false;
}
bool
Path::is_archive() const {
if (readable()) {
return has_magic_number("!<arch>\012");
}
return false;
}
bool
Path::exists() const {
return 0 == access(path.c_str(), F_OK );
DWORD attr = GetFileAttributes(path.c_str());
return attr != INVALID_FILE_ATTRIBUTES;
}
bool
Path::readable() const {
return 0 == access(path.c_str(), F_OK | R_OK );
// FIXME: take security attributes into account.
DWORD attr = GetFileAttributes(path.c_str());
return attr != INVALID_FILE_ATTRIBUTES;
}
bool
Path::writable() const {
return 0 == access(path.c_str(), F_OK | W_OK );
// FIXME: take security attributes into account.
DWORD attr = GetFileAttributes(path.c_str());
return (attr != INVALID_FILE_ATTRIBUTES) && !(attr & FILE_ATTRIBUTE_READONLY);
}
bool
Path::executable() const {
return 0 == access(path.c_str(), R_OK | X_OK );
// FIXME: take security attributes into account.
DWORD attr = GetFileAttributes(path.c_str());
return attr != INVALID_FILE_ATTRIBUTES;
}
std::string
@ -272,8 +395,8 @@ Path::create_directory( bool create_parents) {
if (!is_directory()) return false;
// Get a writeable copy of the path name
char pathname[MAXPATHLEN];
path.copy(pathname,MAXPATHLEN);
char *pathname = reinterpret_cast<char *>(_alloca(path.length()+1));
path.copy(pathname,path.length()+1);
// Null-terminate the last component
int lastchar = path.length() - 1 ;
@ -290,15 +413,14 @@ Path::create_directory( bool create_parents) {
// Loop through the directory components until we're done
while ( next != 0 ) {
*next = 0;
if (0 != access(pathname, F_OK | R_OK | W_OK))
if (0 != mkdir(pathname))
ThrowError(std::string(pathname) + ": Can't create directory");
if (!CreateDirectory(pathname, NULL))
ThrowError(std::string(pathname) + ": Can't create directory: ");
char* save = next;
next = strchr(pathname,'/');
*save = '/';
}
} else if (0 != mkdir(pathname)) {
ThrowError(std::string(pathname) + ": Can't create directory");
} else if (!CreateDirectory(pathname, NULL)) {
ThrowError(std::string(pathname) + ": Can't create directory: ");
}
return true;
}
@ -309,9 +431,12 @@ Path::create_file() {
if (!is_file()) return false;
// Create the file
if (0 != creat(path.c_str(), S_IRUSR | S_IWUSR))
ThrowError(std::string(path.c_str()) + ": Can't create file");
HANDLE h = CreateFile(path.c_str(), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL, NULL);
if (h == INVALID_HANDLE_VALUE)
ThrowError(std::string(path.c_str()) + ": Can't create file: ");
CloseHandle(h);
return true;
}
@ -323,20 +448,23 @@ Path::destroy_directory(bool remove_contents) {
// If it doesn't exist, we're done.
if (!exists()) return true;
char *pathname = reinterpret_cast<char *>(_alloca(path.length()+1));
path.copy(pathname,path.length()+1);
int lastchar = path.length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
if (remove_contents) {
// Recursively descend the directory to remove its content
std::string cmd("/bin/rm -rf ");
// FIXME: The correct way of doing this on Windows isn't pretty...
// but this may work if unix-like utils are present.
std::string cmd("rm -rf ");
cmd += path;
system(cmd.c_str());
} else {
// Otherwise, try to just remove the one directory
char pathname[MAXPATHLEN];
path.copy(pathname,MAXPATHLEN);
int lastchar = path.length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
if ( 0 != rmdir(pathname))
ThrowError(std::string(pathname) + ": Can't destroy directory");
if (!RemoveDirectory(pathname))
ThrowError(std::string(pathname) + ": Can't destroy directory: ");
}
return true;
}
@ -344,8 +472,22 @@ Path::destroy_directory(bool remove_contents) {
bool
Path::destroy_file() {
if (!is_file()) return false;
if (0 != unlink(path.c_str()))
ThrowError(std::string(path.c_str()) + ": Can't destroy file");
DWORD attr = GetFileAttributes(path.c_str());
// If it doesn't exist, we're done.
if (attr == INVALID_FILE_ATTRIBUTES)
return true;
// Read-only files cannot be deleted on Windows. Must remove the read-only
// attribute first.
if (attr & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributes(path.c_str(), attr & ~FILE_ATTRIBUTE_READONLY))
ThrowError(std::string(path.c_str()) + ": Can't destroy file: ");
}
if (!DeleteFile(path.c_str()))
ThrowError(std::string(path.c_str()) + ": Can't destroy file: ");
return true;
}

View File

@ -6,6 +6,7 @@
// University of Illinois Open Source License. See LICENSE.TXT for details.
//
// Modified by Henrik Bach to comply with at least MinGW.
// Ported to Win32 by Jeff Cohen.
//
//===----------------------------------------------------------------------===//
//
@ -18,18 +19,10 @@
//=== is guaranteed to work on *all* Win32 variants.
//===----------------------------------------------------------------------===//
#include <llvm/Config/config.h>
#include <limits.h>
#include <stdarg.h>
#include <assert.h>
#include <fcntl.h>
#include <sys/stat.h>
#include "Win32.h"
#include <llvm/System/Path.h>
#include <windef.h>
#include <winbase.h>
#define MAXPATHLEN PATH_MAX
#include <fstream>
#include <malloc.h>
namespace llvm {
namespace sys {
@ -38,23 +31,47 @@ bool
Path::is_valid() const {
if (path.empty())
return false;
/*hb: char pathname[MAXPATHLEN];
if (0 == realpath(path.c_str(), pathname))
if (errno != EACCES && errno != EIO && errno != ENOENT && errno !=
ENOTDIR)
return false;*/
return true;
// On Unix, the realpath function is used, which only requires that the
// directories leading up the to final file name are valid. The file itself
// need not exist. To get this behavior on Windows, we must elide the file
// name manually.
Path dir(*this);
dir.elide_file();
if (dir.path.empty())
return true;
DWORD attr = GetFileAttributes(dir.path.c_str());
return (attr != INVALID_FILE_ATTRIBUTES) && (attr & FILE_ATTRIBUTE_DIRECTORY);
}
static Path *TempDirectory = NULL;
Path
Path::GetTemporaryDirectory() {
char pathname[MAXPATHLEN];
if (0 == GetTempPath(MAXPATHLEN,pathname))
ThrowError(std::string(pathname) + ": Can't create temporary directory");
if (TempDirectory)
return *TempDirectory;
char pathname[MAX_PATH];
if (!GetTempPath(MAX_PATH, pathname))
ThrowError("Can't determine temporary directory");
Path result;
result.set_directory(pathname);
assert(result.is_valid() && "GetTempPath didn't create a valid pathname!");
return result;
// Append a subdirectory passed on our process id so multiple LLVMs don't
// step on each other's toes.
sprintf(pathname, "LLVM_%u", GetCurrentProcessId());
result.append_directory(pathname);
// If there's a directory left over from a previous LLVM execution that
// happened to have the same process id, get rid of it.
result.destroy_directory(true);
// And finally (re-)create the empty directory.
result.create_directory(false);
TempDirectory = new Path(result);
return *TempDirectory;
}
Path::Path(std::string unverified_path)
@ -69,6 +86,7 @@ Path::Path(std::string unverified_path)
ThrowError(unverified_path + ": path is not valid");
}
// FIXME: the following set of functions don't map to Windows very well.
Path
Path::GetRootDirectory() {
Path result;
@ -76,6 +94,59 @@ Path::GetRootDirectory() {
return result;
}
static inline bool IsLibrary(Path& path, const std::string& basename) {
if (path.append_file(std::string("lib") + basename)) {
if (path.append_suffix(Path::GetDLLSuffix()) && path.readable())
return true;
else if (path.elide_suffix() && path.append_suffix("a") && path.readable())
return true;
else if (path.elide_suffix() && path.append_suffix("o") && path.readable())
return true;
else if (path.elide_suffix() && path.append_suffix("bc") && path.readable())
return true;
} else if (path.elide_file() && path.append_file(basename)) {
if (path.append_suffix(Path::GetDLLSuffix()) && path.readable())
return true;
else if (path.elide_suffix() && path.append_suffix("a") && path.readable())
return true;
else if (path.elide_suffix() && path.append_suffix("o") && path.readable())
return true;
else if (path.elide_suffix() && path.append_suffix("bc") && path.readable())
return true;
}
path.clear();
return false;
}
Path
Path::GetLibraryPath(const std::string& basename,
const std::vector<std::string>& LibPaths) {
Path result;
// Try the paths provided
for (std::vector<std::string>::const_iterator I = LibPaths.begin(),
E = LibPaths.end(); I != E; ++I ) {
if (result.set_directory(*I) && IsLibrary(result,basename))
return result;
}
// Try the LLVM lib directory in the LLVM install area
//if (result.set_directory(LLVM_LIBDIR) && IsLibrary(result,basename))
// return result;
// Try /usr/lib
if (result.set_directory("/usr/lib/") && IsLibrary(result,basename))
return result;
// Try /lib
if (result.set_directory("/lib/") && IsLibrary(result,basename))
return result;
// Can't find it, give up and return invalid path.
result.clear();
return result;
}
Path
Path::GetSystemLibraryPath1() {
return Path("/lib/");
@ -93,9 +164,6 @@ Path::GetLLVMDefaultConfigDir() {
Path
Path::GetLLVMConfigDir() {
Path result;
if (result.set_directory(LLVM_ETCDIR))
return result;
return GetLLVMDefaultConfigDir();
}
@ -109,25 +177,80 @@ Path::GetUserHomeDirectory() {
}
return GetRootDirectory();
}
// FIXME: the above set of functions don't map to Windows very well.
bool
Path::is_file() const {
return (is_valid() && path[path.length()-1] != '/');
}
bool
Path::is_directory() const {
return (is_valid() && path[path.length()-1] == '/');
}
std::string
Path::get_basename() const {
// Find the last slash
size_t slash = path.rfind('/');
if (slash == std::string::npos)
slash = 0;
else
slash++;
return path.substr(slash, path.rfind('.'));
}
bool Path::has_magic_number(const std::string &Magic) const {
size_t len = Magic.size();
char *buf = reinterpret_cast<char *>(_alloca(len+1));
std::ifstream f(path.c_str());
f.read(buf, len);
buf[len] = '\0';
return Magic == buf;
}
bool
Path::is_bytecode_file() const {
if (readable()) {
return has_magic_number("llvm");
}
return false;
}
bool
Path::is_archive() const {
if (readable()) {
return has_magic_number("!<arch>\012");
}
return false;
}
bool
Path::exists() const {
return 0 == access(path.c_str(), F_OK );
DWORD attr = GetFileAttributes(path.c_str());
return attr != INVALID_FILE_ATTRIBUTES;
}
bool
Path::readable() const {
return 0 == access(path.c_str(), F_OK | R_OK );
// FIXME: take security attributes into account.
DWORD attr = GetFileAttributes(path.c_str());
return attr != INVALID_FILE_ATTRIBUTES;
}
bool
Path::writable() const {
return 0 == access(path.c_str(), F_OK | W_OK );
// FIXME: take security attributes into account.
DWORD attr = GetFileAttributes(path.c_str());
return (attr != INVALID_FILE_ATTRIBUTES) && !(attr & FILE_ATTRIBUTE_READONLY);
}
bool
Path::executable() const {
return 0 == access(path.c_str(), R_OK | X_OK );
// FIXME: take security attributes into account.
DWORD attr = GetFileAttributes(path.c_str());
return attr != INVALID_FILE_ATTRIBUTES;
}
std::string
@ -272,8 +395,8 @@ Path::create_directory( bool create_parents) {
if (!is_directory()) return false;
// Get a writeable copy of the path name
char pathname[MAXPATHLEN];
path.copy(pathname,MAXPATHLEN);
char *pathname = reinterpret_cast<char *>(_alloca(path.length()+1));
path.copy(pathname,path.length()+1);
// Null-terminate the last component
int lastchar = path.length() - 1 ;
@ -290,15 +413,14 @@ Path::create_directory( bool create_parents) {
// Loop through the directory components until we're done
while ( next != 0 ) {
*next = 0;
if (0 != access(pathname, F_OK | R_OK | W_OK))
if (0 != mkdir(pathname))
ThrowError(std::string(pathname) + ": Can't create directory");
if (!CreateDirectory(pathname, NULL))
ThrowError(std::string(pathname) + ": Can't create directory: ");
char* save = next;
next = strchr(pathname,'/');
*save = '/';
}
} else if (0 != mkdir(pathname)) {
ThrowError(std::string(pathname) + ": Can't create directory");
} else if (!CreateDirectory(pathname, NULL)) {
ThrowError(std::string(pathname) + ": Can't create directory: ");
}
return true;
}
@ -309,9 +431,12 @@ Path::create_file() {
if (!is_file()) return false;
// Create the file
if (0 != creat(path.c_str(), S_IRUSR | S_IWUSR))
ThrowError(std::string(path.c_str()) + ": Can't create file");
HANDLE h = CreateFile(path.c_str(), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL, NULL);
if (h == INVALID_HANDLE_VALUE)
ThrowError(std::string(path.c_str()) + ": Can't create file: ");
CloseHandle(h);
return true;
}
@ -323,20 +448,23 @@ Path::destroy_directory(bool remove_contents) {
// If it doesn't exist, we're done.
if (!exists()) return true;
char *pathname = reinterpret_cast<char *>(_alloca(path.length()+1));
path.copy(pathname,path.length()+1);
int lastchar = path.length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
if (remove_contents) {
// Recursively descend the directory to remove its content
std::string cmd("/bin/rm -rf ");
// FIXME: The correct way of doing this on Windows isn't pretty...
// but this may work if unix-like utils are present.
std::string cmd("rm -rf ");
cmd += path;
system(cmd.c_str());
} else {
// Otherwise, try to just remove the one directory
char pathname[MAXPATHLEN];
path.copy(pathname,MAXPATHLEN);
int lastchar = path.length() - 1 ;
if (pathname[lastchar] == '/')
pathname[lastchar] = 0;
if ( 0 != rmdir(pathname))
ThrowError(std::string(pathname) + ": Can't destroy directory");
if (!RemoveDirectory(pathname))
ThrowError(std::string(pathname) + ": Can't destroy directory: ");
}
return true;
}
@ -344,8 +472,22 @@ Path::destroy_directory(bool remove_contents) {
bool
Path::destroy_file() {
if (!is_file()) return false;
if (0 != unlink(path.c_str()))
ThrowError(std::string(path.c_str()) + ": Can't destroy file");
DWORD attr = GetFileAttributes(path.c_str());
// If it doesn't exist, we're done.
if (attr == INVALID_FILE_ATTRIBUTES)
return true;
// Read-only files cannot be deleted on Windows. Must remove the read-only
// attribute first.
if (attr & FILE_ATTRIBUTE_READONLY) {
if (!SetFileAttributes(path.c_str(), attr & ~FILE_ATTRIBUTE_READONLY))
ThrowError(std::string(path.c_str()) + ": Can't destroy file: ");
}
if (!DeleteFile(path.c_str()))
ThrowError(std::string(path.c_str()) + ": Can't destroy file: ");
return true;
}