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Differential D112289 Diff 383456 llvm/lib/Support/Path.cpp

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llvm/lib/Support/Path.cpp

Show First 20 Lines • Show All 58 Lines • ▼ Show 20 Lines StringRef find_first_component(StringRef path, Style style) {
// * empty (in this case we return an empty string) // * empty (in this case we return an empty string)
// * either C: or {//,\\}net. // * either C: or {//,\\}net.
// * {/,\} // * {/,\}
// * {file,directory}name // * {file,directory}name
if (path.empty()) if (path.empty())
return path; return path;
if (real_style(style) == Style::windows) { if (is_style_windows(style)) {
// C: // C:
if (path.size() >= 2 && if (path.size() >= 2 &&
std::isalpha(static_cast<unsigned char>(path[0])) && path[1] == ':') std::isalpha(static_cast<unsigned char>(path[0])) && path[1] == ':')
return path.substr(0, 2); return path.substr(0, 2);
} }
// //net // //net
if ((path.size() > 2) && is_separator(path[0], style) && if ((path.size() > 2) && is_separator(path[0], style) &&
Show All 15 Linesnamespace {
// Returns the first character of the filename in str. For paths ending in // Returns the first character of the filename in str. For paths ending in
// '/', it returns the position of the '/'. // '/', it returns the position of the '/'.
size_t filename_pos(StringRef str, Style style) { size_t filename_pos(StringRef str, Style style) {
if (str.size() > 0 && is_separator(str[str.size() - 1], style)) if (str.size() > 0 && is_separator(str[str.size() - 1], style))
return str.size() - 1; return str.size() - 1;
size_t pos = str.find_last_of(separators(style), str.size() - 1); size_t pos = str.find_last_of(separators(style), str.size() - 1);
if (real_style(style) == Style::windows) { if (is_style_windows(style)) {
if (pos == StringRef::npos) if (pos == StringRef::npos)
pos = str.find_last_of(':', str.size() - 2); pos = str.find_last_of(':', str.size() - 2);
} }
if (pos == StringRef::npos || (pos == 1 && is_separator(str[0], style))) if (pos == StringRef::npos || (pos == 1 && is_separator(str[0], style)))
return 0; return 0;
return pos + 1; return pos + 1;
} }
// Returns the position of the root directory in str. If there is no root // Returns the position of the root directory in str. If there is no root
// directory in str, it returns StringRef::npos. // directory in str, it returns StringRef::npos.
size_t root_dir_start(StringRef str, Style style) { size_t root_dir_start(StringRef str, Style style) {
// case "c:/" // case "c:/"
if (real_style(style) == Style::windows) { if (is_style_windows(style)) {
if (str.size() > 2 && str[1] == ':' && is_separator(str[2], style)) if (str.size() > 2 && str[1] == ':' && is_separator(str[2], style))
return 2; return 2;
} }
// case "//net" // case "//net"
if (str.size() > 3 && is_separator(str[0], style) && str[0] == str[1] && if (str.size() > 3 && is_separator(str[0], style) && str[0] == str[1] &&
!is_separator(str[2], style)) { !is_separator(str[2], style)) {
return str.find_first_of(separators(style), 2); return str.find_first_of(separators(style), 2);
▲ Show 20 Lines • Show All 129 Lines • ▼ Show 20 Linesconst_iterator &const_iterator::operator++() {
bool was_net = Component.size() > 2 && is_separator(Component[0], S) && bool was_net = Component.size() > 2 && is_separator(Component[0], S) &&
Component[1] == Component[0] && !is_separator(Component[2], S); Component[1] == Component[0] && !is_separator(Component[2], S);
// Handle separators. // Handle separators.
if (is_separator(Path[Position], S)) { if (is_separator(Path[Position], S)) {
// Root dir. // Root dir.
if (was_net || if (was_net ||
// c:/ // c:/
(real_style(S) == Style::windows && Component.endswith(":"))) { (is_style_windows(S) && Component.endswith(":"))) {
Component = Path.substr(Position, 1); Component = Path.substr(Position, 1);
return *this; return *this;
} }
// Skip extra separators. // Skip extra separators.
while (Position != Path.size() && is_separator(Path[Position], S)) { while (Position != Path.size() && is_separator(Path[Position], S)) {
++Position; ++Position;
} }
▲ Show 20 Lines • Show All 72 Lines • ▼ Show 20 Linesptrdiff_t reverse_iterator::operator-(const reverse_iterator &RHS) const {
return Position - RHS.Position; return Position - RHS.Position;
} }
StringRef root_path(StringRef path, Style style) { StringRef root_path(StringRef path, Style style) {
const_iterator b = begin(path, style), pos = b, e = end(path); const_iterator b = begin(path, style), pos = b, e = end(path);
if (b != e) { if (b != e) {
bool has_net = bool has_net =
b->size() > 2 && is_separator((*b)[0], style) && (*b)[1] == (*b)[0]; b->size() > 2 && is_separator((*b)[0], style) && (*b)[1] == (*b)[0];
bool has_drive = (real_style(style) == Style::windows) && b->endswith(":"); bool has_drive = is_style_windows(style) && b->endswith(":");
if (has_net || has_drive) { if (has_net || has_drive) {
if ((++pos != e) && is_separator((*pos)[0], style)) { if ((++pos != e) && is_separator((*pos)[0], style)) {
// {C:/,//net/}, so get the first two components. // {C:/,//net/}, so get the first two components.
return path.substr(0, b->size() + pos->size()); return path.substr(0, b->size() + pos->size());
} }
// just {C:,//net}, return the first component. // just {C:,//net}, return the first component.
return *b; return *b;
} }
// POSIX style root directory. // POSIX style root directory.
if (is_separator((*b)[0], style)) { if (is_separator((*b)[0], style)) {
return *b; return *b;
} }
} }
return StringRef(); return StringRef();
} }
StringRef root_name(StringRef path, Style style) { StringRef root_name(StringRef path, Style style) {
const_iterator b = begin(path, style), e = end(path); const_iterator b = begin(path, style), e = end(path);
if (b != e) { if (b != e) {
bool has_net = bool has_net =
b->size() > 2 && is_separator((*b)[0], style) && (*b)[1] == (*b)[0]; b->size() > 2 && is_separator((*b)[0], style) && (*b)[1] == (*b)[0];
bool has_drive = (real_style(style) == Style::windows) && b->endswith(":"); bool has_drive = is_style_windows(style) && b->endswith(":");
if (has_net || has_drive) { if (has_net || has_drive) {
// just {C:,//net}, return the first component. // just {C:,//net}, return the first component.
return *b; return *b;
} }
} }
// No path or no name. // No path or no name.
return StringRef(); return StringRef();
} }
StringRef root_directory(StringRef path, Style style) { StringRef root_directory(StringRef path, Style style) {
const_iterator b = begin(path, style), pos = b, e = end(path); const_iterator b = begin(path, style), pos = b, e = end(path);
if (b != e) { if (b != e) {
bool has_net = bool has_net =
b->size() > 2 && is_separator((*b)[0], style) && (*b)[1] == (*b)[0]; b->size() > 2 && is_separator((*b)[0], style) && (*b)[1] == (*b)[0];
bool has_drive = (real_style(style) == Style::windows) && b->endswith(":"); bool has_drive = is_style_windows(style) && b->endswith(":");
if ((has_net || has_drive) && if ((has_net || has_drive) &&
// {C:,//net}, skip to the next component. // {C:,//net}, skip to the next component.
(++pos != e) && is_separator((*pos)[0], style)) { (++pos != e) && is_separator((*pos)[0], style)) {
return *pos; return *pos;
} }
// POSIX style root directory. // POSIX style root directory.
▲ Show 20 Lines • Show All 90 Lines • ▼ Show 20 Linesvoid replace_extension(SmallVectorImpl<char> &path, const Twine &extension,
// Append extension. // Append extension.
path.append(ext.begin(), ext.end()); path.append(ext.begin(), ext.end());
} }
static bool starts_with(StringRef Path, StringRef Prefix, static bool starts_with(StringRef Path, StringRef Prefix,
Style style = Style::native) { Style style = Style::native) {
// Windows prefix matching : case and separator insensitive // Windows prefix matching : case and separator insensitive
if (real_style(style) == Style::windows) { if (is_style_windows(style)) {
if (Path.size() < Prefix.size()) if (Path.size() < Prefix.size())
return false; return false;
for (size_t I = 0, E = Prefix.size(); I != E; ++I) { for (size_t I = 0, E = Prefix.size(); I != E; ++I) {
bool SepPath = is_separator(Path[I], style); bool SepPath = is_separator(Path[I], style);
bool SepPrefix = is_separator(Prefix[I], style); bool SepPrefix = is_separator(Prefix[I], style);
if (SepPath != SepPrefix) if (SepPath != SepPrefix)
return false; return false;
if (!SepPath && toLower(Path[I]) != toLower(Prefix[I])) if (!SepPath && toLower(Path[I]) != toLower(Prefix[I]))
Show All 34 Linesvoid native(const Twine &path, SmallVectorImpl<char> &result, Style style) {
result.clear(); result.clear();
path.toVector(result); path.toVector(result);
native(result, style); native(result, style);
} }
void native(SmallVectorImpl<char> &Path, Style style) { void native(SmallVectorImpl<char> &Path, Style style) {
if (Path.empty()) if (Path.empty())
return; return;
if (real_style(style) == Style::windows) { if (is_style_windows(style)) {
std::replace(Path.begin(), Path.end(), '/', '\\'); std::replace(Path.begin(), Path.end(), '/', '\\');
if (Path[0] == '~' && (Path.size() == 1 || is_separator(Path[1], style))) { if (Path[0] == '~' && (Path.size() == 1 || is_separator(Path[1], style))) {
SmallString<128> PathHome; SmallString<128> PathHome;
home_directory(PathHome); home_directory(PathHome);
PathHome.append(Path.begin() + 1, Path.end()); PathHome.append(Path.begin() + 1, Path.end());
Path = PathHome; Path = PathHome;
} }
} else { } else {
std::replace(Path.begin(), Path.end(), '\\', '/'); std::replace(Path.begin(), Path.end(), '\\', '/');
} }
} }
std::string convert_to_slash(StringRef path, Style style) { std::string convert_to_slash(StringRef path, Style style) {
if (real_style(style) != Style::windows) if (is_style_posix(style))
return std::string(path); return std::string(path);
std::string s = path.str(); std::string s = path.str();
std::replace(s.begin(), s.end(), '\\', '/'); std::replace(s.begin(), s.end(), '\\', '/');
return s; return s;
} }
StringRef filename(StringRef path, Style style) { return *rbegin(path, style); } StringRef filename(StringRef path, Style style) { return *rbegin(path, style); }
Show All 18 Lines if ((fname.size() == 1 && fname == ".") ||
(fname.size() == 2 && fname == "..")) (fname.size() == 2 && fname == ".."))
return StringRef(); return StringRef();
return fname.substr(pos); return fname.substr(pos);
} }
bool is_separator(char value, Style style) { bool is_separator(char value, Style style) {
if (value == '/') if (value == '/')
return true; return true;
if (real_style(style) == Style::windows) if (is_style_windows(style))
return value == '\\'; return value == '\\';
return false; return false;
} }
StringRef get_separator(Style style) { StringRef get_separator(Style style) {
if (real_style(style) == Style::windows) if (is_style_windows(style))
return "\\"; return "\\";
return "/"; return "/";
} }
bool has_root_name(const Twine &path, Style style) { bool has_root_name(const Twine &path, Style style) {
SmallString<128> path_storage; SmallString<128> path_storage;
StringRef p = path.toStringRef(path_storage); StringRef p = path.toStringRef(path_storage);
▲ Show 20 Lines • Show All 49 Lines • ▼ Show 20 Linesbool has_extension(const Twine &path, Style style) {
return !extension(p, style).empty(); return !extension(p, style).empty();
} }
bool is_absolute(const Twine &path, Style style) { bool is_absolute(const Twine &path, Style style) {
SmallString<128> path_storage; SmallString<128> path_storage;
StringRef p = path.toStringRef(path_storage); StringRef p = path.toStringRef(path_storage);
bool rootDir = has_root_directory(p, style); bool rootDir = has_root_directory(p, style);
bool rootName = bool rootName = is_style_posix(style) || has_root_name(p, style);
(real_style(style) != Style::windows) || has_root_name(p, style);
return rootDir && rootName; return rootDir && rootName;
} }
bool is_absolute_gnu(const Twine &path, Style style) { bool is_absolute_gnu(const Twine &path, Style style) {
SmallString<128> path_storage; SmallString<128> path_storage;
StringRef p = path.toStringRef(path_storage); StringRef p = path.toStringRef(path_storage);
// Handle '/' which is absolute for both Windows and POSIX systems. // Handle '/' which is absolute for both Windows and POSIX systems.
// Handle '\\' on Windows. // Handle '\\' on Windows.
if (!p.empty() && is_separator(p.front(), style)) if (!p.empty() && is_separator(p.front(), style))
return true; return true;
if (real_style(style) == Style::windows) { if (is_style_windows(style)) {
// Handle drive letter pattern (a character followed by ':') on Windows. // Handle drive letter pattern (a character followed by ':') on Windows.
if (p.size() >= 2 && (p[0] && p[1] == ':')) if (p.size() >= 2 && (p[0] && p[1] == ':'))
return true; return true;
} }
return false; return false;
} }
▲ Show 20 Lines • Show All 203 Lines • ▼ Show 20 Lines
void make_absolute(const Twine &current_directory, void make_absolute(const Twine &current_directory,
SmallVectorImpl<char> &path) { SmallVectorImpl<char> &path) {
StringRef p(path.data(), path.size()); StringRef p(path.data(), path.size());
bool rootDirectory = path::has_root_directory(p); bool rootDirectory = path::has_root_directory(p);
bool rootName = path::has_root_name(p); bool rootName = path::has_root_name(p);
// Already absolute. // Already absolute.
if ((rootName || real_style(Style::native) != Style::windows) && if ((rootName || is_style_posix(Style::native)) && rootDirectory)
rootDirectory)
return; return;
// All of the following conditions will need the current directory. // All of the following conditions will need the current directory.
SmallString<128> current_dir; SmallString<128> current_dir;
current_directory.toVector(current_dir); current_directory.toVector(current_dir);
// Relative path. Prepend the current directory. // Relative path. Prepend the current directory.
if (!rootName && !rootDirectory) { if (!rootName && !rootDirectory) {
▲ Show 20 Lines • Show All 416 Lines • Show Last 20 Lines