//===----------------------------------------------------------------------===//
#include "llvm/Support/PathV2.h"
+#include "llvm/Support/FileSystem.h"
#include "llvm/Support/ErrorHandling.h"
#include <cctype>
#ifdef LLVM_ON_WIN32
const StringRef separators = "\\/";
- const char prefered_separator = '\\';
+ const char prefered_separator = '\\';
#else
const StringRef separators = "/";
const char prefered_separator = '/';
#endif
+ const llvm::error_code success;
+
StringRef find_first_component(const StringRef &path) {
// Look for this first component in the following order.
// * empty (in this case we return an empty string)
if (path.empty())
return path;
+#ifdef LLVM_ON_WIN32
// C:
if (path.size() >= 2 && std::isalpha(path[0]) && path[1] == ':')
return StringRef(path.begin(), 2);
+#endif
// //net
if ((path.size() > 2) &&
- (path.startswith("\\\\") || path.startswith("//")) &&
- (path[2] != '\\' && path[2] != '/')) {
+ is_separator(path[0]) &&
+ path[0] == path[1] &&
+ !is_separator(path[2])) {
// Find the next directory separator.
- size_t end = path.find_first_of("\\/", 2);
+ size_t end = path.find_first_of(separators, 2);
if (end == StringRef::npos)
return path;
else
}
// {/,\}
- if (path[0] == '\\' || path[0] == '/')
+ if (is_separator(path[0]))
return StringRef(path.begin(), 1);
if (path.startswith(".."))
return StringRef(path.begin(), 1);
// * {file,directory}name
- size_t end = path.find_first_of("\\/", 2);
+ size_t end = path.find_first_of(separators, 2);
if (end == StringRef::npos)
return path;
else
size_t filename_pos(const StringRef &str) {
if (str.size() == 2 &&
is_separator(str[0]) &&
- is_separator(str[1]))
+ str[0] == str[1])
return 0;
if (str.size() > 0 && is_separator(str[str.size() - 1]))
return Position - RHS.Position;
}
-error_code root_path(const StringRef &path, StringRef &result) {
+const StringRef root_path(const StringRef &path) {
const_iterator b = begin(path),
pos = b,
e = end(path);
if (has_net || has_drive) {
if ((++pos != e) && is_separator((*pos)[0])) {
// {C:/,//net/}, so get the first two components.
- result = StringRef(path.begin(), b->size() + pos->size());
- return make_error_code(errc::success);
+ return StringRef(path.begin(), b->size() + pos->size());
} else {
// just {C:,//net}, return the first component.
- result = *b;
- return make_error_code(errc::success);
+ return *b;
}
}
// POSIX style root directory.
if (is_separator((*b)[0])) {
- result = *b;
- return make_error_code(errc::success);
+ return *b;
}
-
- // No root_path.
- result = StringRef();
- return make_error_code(errc::success);
}
- // No path :(.
- result = StringRef();
- return make_error_code(errc::success);
+ return StringRef();
}
-error_code root_name(const StringRef &path, StringRef &result) {
+const StringRef root_name(const StringRef &path) {
const_iterator b = begin(path),
e = end(path);
if (b != e) {
if (has_net || has_drive) {
// just {C:,//net}, return the first component.
- result = *b;
- return make_error_code(errc::success);
+ return *b;
}
}
// No path or no name.
- result = StringRef();
- return make_error_code(errc::success);
+ return StringRef();
}
-error_code root_directory(const StringRef &path, StringRef &result) {
+const StringRef root_directory(const StringRef &path) {
const_iterator b = begin(path),
pos = b,
e = end(path);
if ((has_net || has_drive) &&
// {C:,//net}, skip to the next component.
(++pos != e) && is_separator((*pos)[0])) {
- result = *pos;
- return make_error_code(errc::success);
+ return *pos;
}
// POSIX style root directory.
if (!has_net && is_separator((*b)[0])) {
- result = *b;
- return make_error_code(errc::success);
+ return *b;
}
}
// No path or no root.
- result = StringRef();
- return make_error_code(errc::success);
+ return StringRef();
}
-error_code has_root_name(const Twine &path, bool &result) {
- SmallString<128> storage;
- StringRef p = path.toStringRef(storage);
-
- if (error_code ec = root_name(p, p)) return ec;
- result = !p.empty();
- return make_error_code(errc::success);
+const StringRef relative_path(const StringRef &path) {
+ StringRef root = root_path(path);
+ return StringRef(path.begin() + root.size(), path.size() - root.size());
}
-error_code has_root_directory(const Twine &path, bool &result) {
- SmallString<128> storage;
- StringRef p = path.toStringRef(storage);
-
- if (error_code ec = root_directory(p, p)) return ec;
- result = !p.empty();
- return make_error_code(errc::success);
-}
-
-error_code relative_path(const StringRef &path, StringRef &result) {
- StringRef root;
- if (error_code ec = root_path(path, root)) return ec;
- result = StringRef(path.begin() + root.size(), path.size() - root.size());
- return make_error_code(errc::success);
-}
-
-error_code append(SmallVectorImpl<char> &path, const Twine &a,
- const Twine &b,
- const Twine &c,
- const Twine &d) {
+void append(SmallVectorImpl<char> &path, const Twine &a,
+ const Twine &b,
+ const Twine &c,
+ const Twine &d) {
SmallString<32> a_storage;
SmallString<32> b_storage;
SmallString<32> c_storage;
i != e; ++i) {
bool path_has_sep = !path.empty() && is_separator(path[path.size() - 1]);
bool component_has_sep = !i->empty() && is_separator((*i)[0]);
- bool is_root_name;
- if (error_code ec = has_root_name(*i, is_root_name)) return ec;
+ bool is_root_name = has_root_name(*i);
if (path_has_sep) {
// Strip separators from beginning of component.
continue;
}
- if (!component_has_sep && !(path.empty() && is_root_name)) {
+ if (!component_has_sep && !(path.empty() || is_root_name)) {
// Add a separator.
path.push_back(prefered_separator);
}
path.append(i->begin(), i->end());
}
-
- return make_error_code(errc::success);
}
-error_code make_absolute(SmallVectorImpl<char> &path) {
- StringRef p(path.data(), path.size());
-
- bool rootName, rootDirectory;
- if (error_code ec = has_root_name(p, rootName)) return ec;
- if (error_code ec = has_root_directory(p, rootDirectory)) return ec;
-
- // Already absolute.
- if (rootName && rootDirectory)
- return make_error_code(errc::success);
-
- // All of the following conditions will need the current directory.
- SmallString<128> current_dir;
- if (error_code ec = current_path(current_dir)) return ec;
-
- // Relative path. Prepend the current directory.
- if (!rootName && !rootDirectory) {
- // Append path to the current directory.
- if (error_code ec = append(current_dir, p)) return ec;
- // Set path to the result.
- path.swap(current_dir);
- return make_error_code(errc::success);
- }
-
- if (!rootName && rootDirectory) {
- StringRef cdrn;
- if (error_code ec = root_name(current_dir, cdrn)) return ec;
- SmallString<128> curDirRootName(cdrn.begin(), cdrn.end());
- if (error_code ec = append(curDirRootName, p)) return ec;
- // Set path to the result.
- path.swap(curDirRootName);
- return make_error_code(errc::success);
- }
-
- if (rootName && !rootDirectory) {
- StringRef pRootName;
- StringRef bRootDirectory;
- StringRef bRelativePath;
- StringRef pRelativePath;
- if (error_code ec = root_name(p, pRootName)) return ec;
- if (error_code ec = root_directory(current_dir, bRootDirectory)) return ec;
- if (error_code ec = relative_path(current_dir, bRelativePath)) return ec;
- if (error_code ec = relative_path(p, pRelativePath)) return ec;
-
- SmallString<128> res;
- if (error_code ec = append(res, pRootName, bRootDirectory,
- bRelativePath, pRelativePath)) return ec;
- path.swap(res);
- return make_error_code(errc::success);
- }
-
- llvm_unreachable("All rootName and rootDirectory combinations should have "
- "occurred above!");
-}
-
-error_code parent_path(const StringRef &path, StringRef &result) {
+const StringRef parent_path(const StringRef &path) {
size_t end_pos = parent_path_end(path);
if (end_pos == StringRef::npos)
- result = StringRef();
+ return StringRef();
else
- result = StringRef(path.data(), end_pos);
- return make_error_code(errc::success);
+ return StringRef(path.data(), end_pos);
}
-error_code remove_filename(SmallVectorImpl<char> &path) {
+void remove_filename(SmallVectorImpl<char> &path) {
size_t end_pos = parent_path_end(StringRef(path.begin(), path.size()));
- if (end_pos == StringRef::npos)
- return make_error_code(errc::success);
- path.set_size(end_pos);
- return make_error_code(errc::success);
+ if (end_pos != StringRef::npos)
+ path.set_size(end_pos);
}
-error_code replace_extension(SmallVectorImpl<char> &path,
- const Twine &extension) {
+void replace_extension(SmallVectorImpl<char> &path, const Twine &extension) {
StringRef p(path.begin(), path.size());
SmallString<32> ext_storage;
StringRef ext = extension.toStringRef(ext_storage);
// Append extension.
path.append(ext.begin(), ext.end());
- return make_error_code(errc::success);
}
-error_code native(const Twine &path, SmallVectorImpl<char> &result) {
+void native(const Twine &path, SmallVectorImpl<char> &result) {
// Clear result.
- result.set_size(0);
+ result.clear();
#ifdef LLVM_ON_WIN32
SmallString<128> path_storage;
StringRef p = path.toStringRef(path_storage);
#else
path.toVector(result);
#endif
- return make_error_code(errc::success);
}
-error_code filename(const StringRef &path, StringRef &result) {
- result = *(--end(path));
- return make_error_code(errc::success);
+const StringRef filename(const StringRef &path) {
+ return *(--end(path));
}
-error_code stem(const StringRef &path, StringRef &result) {
- StringRef fname;
- if (error_code ec = filename(path, fname)) return ec;
+const StringRef stem(const StringRef &path) {
+ StringRef fname = filename(path);
size_t pos = fname.find_last_of('.');
if (pos == StringRef::npos)
- result = fname;
+ return fname;
else
if ((fname.size() == 1 && fname == ".") ||
(fname.size() == 2 && fname == ".."))
- result = fname;
+ return fname;
else
- result = StringRef(fname.begin(), pos);
-
- return make_error_code(errc::success);
+ return StringRef(fname.begin(), pos);
}
-error_code extension(const StringRef &path, StringRef &result) {
- StringRef fname;
- if (error_code ec = filename(path, fname)) return ec;
+const StringRef extension(const StringRef &path) {
+ StringRef fname = filename(path);
size_t pos = fname.find_last_of('.');
if (pos == StringRef::npos)
- result = StringRef();
+ return StringRef();
else
if ((fname.size() == 1 && fname == ".") ||
(fname.size() == 2 && fname == ".."))
- result = StringRef();
+ return StringRef();
else
- result = StringRef(fname.begin() + pos, fname.size() - pos);
+ return StringRef(fname.begin() + pos, fname.size() - pos);
+}
+
+bool has_root_name(const Twine &path) {
+ SmallString<128> path_storage;
+ StringRef p = path.toStringRef(path_storage);
+
+ return !root_name(p).empty();
+}
+
+bool has_root_directory(const Twine &path) {
+ SmallString<128> path_storage;
+ StringRef p = path.toStringRef(path_storage);
+
+ return !root_directory(p).empty();
+}
+
+bool has_root_path(const Twine &path) {
+ SmallString<128> path_storage;
+ StringRef p = path.toStringRef(path_storage);
+
+ return !root_path(p).empty();
+}
+
+bool has_filename(const Twine &path) {
+ SmallString<128> path_storage;
+ StringRef p = path.toStringRef(path_storage);
+
+ return !filename(p).empty();
+}
+
+bool has_parent_path(const Twine &path) {
+ SmallString<128> path_storage;
+ StringRef p = path.toStringRef(path_storage);
+
+ return !parent_path(p).empty();
+}
- return make_error_code(errc::success);
+bool has_stem(const Twine &path) {
+ SmallString<128> path_storage;
+ StringRef p = path.toStringRef(path_storage);
+
+ return !stem(p).empty();
}
+bool has_extension(const Twine &path) {
+ SmallString<128> path_storage;
+ StringRef p = path.toStringRef(path_storage);
+
+ return !extension(p).empty();
}
+
+bool is_absolute(const Twine &path) {
+ SmallString<128> path_storage;
+ StringRef p = path.toStringRef(path_storage);
+
+ bool rootDir = has_root_directory(p),
+#ifdef LLVM_ON_WIN32
+ rootName = has_root_name(p);
+#else
+ rootName = true;
+#endif
+
+ return rootDir && rootName;
}
+
+bool is_relative(const Twine &path) {
+ return !is_absolute(path);
}
+} // end namespace path
+
+namespace fs {
+
+error_code make_absolute(SmallVectorImpl<char> &path) {
+ StringRef p(path.data(), path.size());
+
+ bool rootName = path::has_root_name(p),
+ rootDirectory = path::has_root_directory(p);
+
+ // Already absolute.
+ if (rootName && rootDirectory)
+ return success;
+
+ // All of the following conditions will need the current directory.
+ SmallString<128> current_dir;
+ if (error_code ec = current_path(current_dir)) return ec;
+
+ // Relative path. Prepend the current directory.
+ if (!rootName && !rootDirectory) {
+ // Append path to the current directory.
+ path::append(current_dir, p);
+ // Set path to the result.
+ path.swap(current_dir);
+ return success;
+ }
+
+ if (!rootName && rootDirectory) {
+ StringRef cdrn = path::root_name(current_dir);
+ SmallString<128> curDirRootName(cdrn.begin(), cdrn.end());
+ path::append(curDirRootName, p);
+ // Set path to the result.
+ path.swap(curDirRootName);
+ return success;
+ }
+
+ if (rootName && !rootDirectory) {
+ StringRef pRootName = path::root_name(p);
+ StringRef bRootDirectory = path::root_directory(current_dir);
+ StringRef bRelativePath = path::relative_path(current_dir);
+ StringRef pRelativePath = path::relative_path(p);
+
+ SmallString<128> res;
+ path::append(res, pRootName, bRootDirectory, bRelativePath, pRelativePath);
+ path.swap(res);
+ return success;
+ }
+
+ llvm_unreachable("All rootName and rootDirectory combinations should have "
+ "occurred above!");
+}
+
+error_code create_directories(const Twine &path, bool &existed) {
+ SmallString<128> path_storage;
+ StringRef p = path.toStringRef(path_storage);
+
+ StringRef parent = path::parent_path(p);
+ bool parent_exists;
+
+ if (error_code ec = fs::exists(parent, parent_exists)) return ec;
+
+ if (!parent_exists)
+ return create_directories(parent, existed);
+
+ return create_directory(p, existed);
+}
+
+bool exists(file_status status) {
+ return status_known(status) && status.type() != file_type::file_not_found;
+}
+
+bool status_known(file_status s) {
+ return s.type() != file_type::status_error;
+}
+
+bool is_directory(file_status status) {
+ return status.type() == file_type::directory_file;
+}
+
+bool is_regular_file(file_status status) {
+ return status.type() == file_type::regular_file;
+}
+
+bool is_symlink(file_status status) {
+ return status.type() == file_type::symlink_file;
+}
+
+bool is_other(file_status status) {
+ return exists(status) &&
+ !is_regular_file(status) &&
+ !is_directory(status) &&
+ !is_symlink(status);
+}
+
+void directory_entry::replace_filename(const Twine &filename, file_status st,
+ file_status symlink_st) {
+ SmallString<128> path(Path.begin(), Path.end());
+ path::remove_filename(path);
+ path::append(path, filename);
+ Path = path.str();
+ Status = st;
+ SymlinkStatus = symlink_st;
+}
+
+} // end namespace fs
+} // end namespace sys
+} // end namespace llvm
+
// Include the truly platform-specific parts.
#if defined(LLVM_ON_UNIX)
#include "Unix/PathV2.inc"
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