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#include "LibLsp/lsp/utils.h"
#include <algorithm>
#include <cassert>
#include <cctype>
#include <cstring>
#include <fstream>
#include <functional>
#include <queue>
#include <sstream>
#include <string>
#include <unordered_map>
#include <sys/stat.h>
#include "LibLsp/lsp/lsPosition.h"
#include "utf8.h"
#ifdef _WIN32
#include <Windows.h>
#endif
// DEFAULT_RESOURCE_DIRECTORY is passed with quotes for non-MSVC compilers, ie,
// foo vs "foo".
#if defined(_MSC_VER)
#define _STRINGIFY(x) #x
#define ENSURE_STRING_MACRO_ARGUMENT(x) _STRINGIFY(x)
#else
#define ENSURE_STRING_MACRO_ARGUMENT(x) x
#endif
#include <boost/utility.hpp>
#include <boost/filesystem/path.hpp>
#include <boost/filesystem/operations.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/filesystem/directory.hpp>
namespace lsp
{
// See http://stackoverflow.com/a/2072890
bool EndsWith(std::string value, std::string ending)
{
if (ending.size() > value.size())
{
return false;
}
return std::equal(ending.rbegin(), ending.rend(), value.rbegin());
}
bool StartsWith(std::string value, std::string start)
{
if (start.size() > value.size())
{
return false;
}
return std::equal(start.begin(), start.end(), value.begin());
}
bool AnyStartsWith(std::vector<std::string> const& values, std::string const& start)
{
return std::any_of(
std::begin(values), std::end(values), [&start](std::string const& value) { return StartsWith(value, start); }
);
}
bool StartsWithAny(std::string const& value, std::vector<std::string> const& startings)
{
return std::any_of(
std::begin(startings), std::end(startings),
[&value](std::string const& starting) { return StartsWith(value, starting); }
);
}
bool EndsWithAny(std::string const& value, std::vector<std::string> const& endings)
{
return std::any_of(
std::begin(endings), std::end(endings), [&value](std::string const& ending) { return EndsWith(value, ending); }
);
}
bool FindAnyPartial(std::string const& value, std::vector<std::string> const& values)
{
return std::any_of(
std::begin(values), std::end(values),
[&value](std::string const& v) { return value.find(v) != std::string::npos; }
);
}
std::string GetDirName(std::string path)
{
ReplaceAll(path, "\\", "/");
if (path.size() && path.back() == '/')
{
path.pop_back();
}
size_t last_slash = path.find_last_of('/');
if (last_slash == std::string::npos)
{
return "./";
}
return path.substr(0, last_slash + 1);
}
std::string GetBaseName(std::string const& path)
{
size_t last_slash = path.find_last_of('/');
if (last_slash != std::string::npos && (last_slash + 1) < path.size())
{
return path.substr(last_slash + 1);
}
return path;
}
std::string StripFileType(std::string const& path)
{
size_t last_period = path.find_last_of('.');
if (last_period != std::string::npos)
{
return path.substr(0, last_period);
}
return path;
}
// See http://stackoverflow.com/a/29752943
std::string ReplaceAll(std::string const& source, std::string const& from, std::string const& to)
{
std::string result;
result.reserve(source.length()); // avoids a few memory allocations
std::string::size_type last_pos = 0;
std::string::size_type find_pos;
while (std::string::npos != (find_pos = source.find(from, last_pos)))
{
result.append(source, last_pos, find_pos - last_pos);
result += to;
last_pos = find_pos + from.length();
}
// Care for the rest after last occurrence
result += source.substr(last_pos);
return result;
}
std::vector<std::string> SplitString(std::string const& str, std::string const& delimiter)
{
// http://stackoverflow.com/a/13172514
std::vector<std::string> strings;
std::string::size_type pos = 0;
std::string::size_type prev = 0;
while ((pos = str.find(delimiter, prev)) != std::string::npos)
{
strings.emplace_back(str.substr(prev, pos - prev));
prev = pos + 1;
}
// To get the last substring (or only, if delimiter is not found)
strings.emplace_back(str.substr(prev));
return strings;
}
void EnsureEndsInSlash(std::string& path)
{
if (path.empty() || path[path.size() - 1] != '/')
{
path += '/';
}
}
std::string EscapeFileName(std::string path)
{
if (path.size() && path.back() == '/')
{
path.pop_back();
}
std::replace(path.begin(), path.end(), '\\', '@');
std::replace(path.begin(), path.end(), '/', '@');
std::replace(path.begin(), path.end(), ':', '@');
return path;
}
// http://stackoverflow.com/a/6089413
std::istream& SafeGetline(std::istream& is, std::string& t)
{
t.clear();
// The characters in the stream are read one-by-one using a std::streambuf.
// That is faster than reading them one-by-one using the std::istream. Code
// that uses streambuf this way must be guarded by a sentry object. The sentry
// object performs various tasks, such as thread synchronization and updating
// the stream state.
std::istream::sentry se(is, true);
std::streambuf* sb = is.rdbuf();
for (;;)
{
int c = sb->sbumpc();
if (c == EOF)
{
// Also handle the case when the last line has no line ending
if (t.empty())
{
is.setstate(std::ios::eofbit);
}
return is;
}
t += (char)c;
if (c == '\n')
{
return is;
}
}
}
bool FileExists(std::string const& filename)
{
std::ifstream cache(filename);
return cache.is_open();
}
optional<std::string> ReadContent(AbsolutePath const& filename)
{
std::ifstream cache;
cache.open(filename.path);
try
{
return std::string(std::istreambuf_iterator<char>(cache), std::istreambuf_iterator<char>());
}
catch (std::ios_base::failure&)
{
return {};
}
}
std::vector<std::string> ReadLinesWithEnding(AbsolutePath const& filename)
{
std::vector<std::string> result;
std::ifstream input(filename.path);
for (std::string line; SafeGetline(input, line);)
{
result.emplace_back(line);
}
return result;
}
bool WriteToFile(std::string const& filename, std::string const& content)
{
std::ofstream file(filename, std::ios::out | std::ios::trunc | std::ios::binary);
if (!file.good())
{
return false;
}
file << content;
return true;
}
std::string FormatMicroseconds(long long microseconds)
{
long long milliseconds = microseconds / 1000;
long long remaining = microseconds - milliseconds;
// Only show two digits after the dot.
while (remaining >= 100)
{
remaining /= 10;
}
return std::to_string(milliseconds) + "." + std::to_string(remaining) + "ms";
}
std::string UpdateToRnNewlines(std::string output)
{
size_t idx = 0;
while (true)
{
idx = output.find('\n', idx);
// No more matches.
if (idx == std::string::npos)
{
break;
}
// Skip an existing "\r\n" match.
if (idx > 0 && output[idx - 1] == '\r')
{
++idx;
continue;
}
// Replace "\n" with "\r|n".
output.replace(output.begin() + idx, output.begin() + idx + 1, "\r\n");
}
return output;
}
bool IsAbsolutePath(std::string const& path)
{
return IsUnixAbsolutePath(path) || IsWindowsAbsolutePath(path);
}
bool IsUnixAbsolutePath(std::string const& path)
{
return !path.empty() && path[0] == '/';
}
bool IsWindowsAbsolutePath(std::string const& path)
{
auto is_drive_letter = [](char c) { return (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z'); };
return path.size() > 3 && path[1] == ':' && (path[2] == '/' || path[2] == '\\') && is_drive_letter(path[0]);
}
bool IsDirectory(std::string const& path)
{
struct stat path_stat;
if (stat(path.c_str(), &path_stat) != 0)
{
perror("cannot access path");
return false;
}
return path_stat.st_mode & S_IFDIR;
}
std::string ws2s(std::wstring const& wstr)
{
BOOST_IF_CONSTEXPR(sizeof(wchar_t) == 2)
{
std::string narrow;
utf8::utf16to8(wstr.begin(), wstr.end(), std::back_inserter(narrow));
return narrow;
}
else
{
std::string narrow;
utf8::utf32to8(wstr.begin(), wstr.end(), std::back_inserter(narrow));
return narrow;
}
}
std::wstring s2ws(std::string const& str)
{
std::wstring wide;
BOOST_IF_CONSTEXPR(sizeof(wchar_t) == 2)
{
utf8::utf8to16(str.begin(), str.end(), std::back_inserter(wide));
return wide;
}
else
{
utf8::utf8to32(str.begin(), str.end(), std::back_inserter(wide));
return wide;
}
}
#ifdef _WIN32
#else
// Returns the canonicalized absolute pathname, without expanding symbolic
// links. This is a variant of realpath(2), C++ rewrite of
// https://github.com/freebsd/freebsd/blob/master/lib/libc/stdlib/realpath.c
AbsolutePath RealPathNotExpandSymlink(std::string path, bool ensure_exists)
{
if (path.empty())
{
errno = EINVAL;
return {};
}
if (path[0] == '\0')
{
errno = ENOENT;
return {};
}
// Do not use PATH_MAX because it is tricky on Linux.
// See https://eklitzke.org/path-max-is-tricky
char tmp[1024];
std::string resolved;
size_t i = 0;
struct stat sb;
if (path[0] == '/')
{
resolved = "/";
i = 1;
}
else
{
if (!getcwd(tmp, sizeof tmp) && ensure_exists)
{
return {};
}
resolved = tmp;
}
while (i < path.size())
{
auto j = path.find('/', i);
if (j == std::string::npos)
{
j = path.size();
}
auto next_token = path.substr(i, j - i);
i = j + 1;
if (resolved.back() != '/')
{
resolved += '/';
}
if (next_token.empty() || next_token == ".")
{
// Handle consequential slashes and "."
continue;
}
else if (next_token == "..")
{
// Strip the last path component except when it is single "/"
if (resolved.size() > 1)
{
resolved.resize(resolved.rfind('/', resolved.size() - 2) + 1);
}
continue;
}
// Append the next path component.
// Here we differ from realpath(3), we use stat(2) instead of
// lstat(2) because we do not want to resolve symlinks.
resolved += next_token;
if (stat(resolved.c_str(), &sb) != 0 && ensure_exists)
{
return {};
}
if (!S_ISDIR(sb.st_mode) && j < path.size() && ensure_exists)
{
errno = ENOTDIR;
return {};
}
}
// Remove trailing slash except when a single "/".
if (resolved.size() > 1 && resolved.back() == '/')
{
resolved.pop_back();
}
return AbsolutePath(resolved, true /*validate*/);
}
#endif
AbsolutePath NormalizePath(std::string const& path0, bool ensure_exists, bool force_lower_on_windows)
{
#ifdef _WIN32
std::wstring path = lsp::s2ws(path0);
wchar_t buffer[MAX_PATH] = (L"");
// Normalize the path name, ie, resolve `..`.
unsigned long len = GetFullPathNameW(path.c_str(), MAX_PATH, buffer, nullptr);
if (!len)
{
return {};
}
path = std::wstring(buffer, len);
// Get the actual casing of the path, ie, if the file on disk is `C:\FooBar`
// and this function is called with `c:\fooBar` this will return `c:\FooBar`.
// (drive casing is lowercase).
if (ensure_exists)
{
len = GetLongPathNameW(path.c_str(), buffer, MAX_PATH);
if (!len)
{
return {};
}
path = std::wstring(buffer, len);
}
// Empty paths have no meaning.
if (path.empty())
{
return {};
}
// We may need to normalize the drive name to upper-case; at the moment
// vscode sends lower-case path names.
/*
path[0] = toupper(path[0]);
*/
// Make the path all lower-case, since windows is case-insensitive.
if (force_lower_on_windows)
{
for (size_t i = 0; i < path.size(); ++i)
{
path[i] = (wchar_t)tolower(path[i]);
}
}
// cquery assumes forward-slashes.
std::replace(path.begin(), path.end(), '\\', '/');
return AbsolutePath(lsp::ws2s(path), false /*validate*/);
#else
return RealPathNotExpandSymlink(path0, ensure_exists);
#endif
}
// VSCode (UTF-16) disagrees with Emacs lsp-mode (UTF-8) on how to represent
// text documents.
// We use a UTF-8 iterator to approximate UTF-16 in the specification (weird).
// This is good enough and fails only for UTF-16 surrogate pairs.
int GetOffsetForPosition(lsPosition position, std::string const& content)
{
size_t i = 0;
// Iterate lines until we have found the correct line.
while (position.line > 0 && i < content.size())
{
if (content[i] == '\n')
{
position.line--;
}
i++;
}
// Iterate characters on the target line.
while (position.character > 0 && i < content.size())
{
if (uint8_t(content[i++]) >= 128)
{
// Skip 0b10xxxxxx
while (i < content.size() && uint8_t(content[i]) >= 128 && uint8_t(content[i]) < 192)
{
i++;
}
}
position.character--;
}
return int(i);
}
lsPosition GetPositionForOffset(size_t offset, std::string const& content)
{
lsPosition result;
for (size_t i = 0; i < offset && i < content.length(); ++i)
{
if (content[i] == '\n')
{
result.line++;
result.character = 0;
}
else
{
result.character++;
}
}
return result;
}
lsPosition CharPos(std::string const& search, char character, int character_offset)
{
lsPosition result;
size_t index = 0;
while (index < search.size())
{
char c = search[index];
if (c == character)
{
break;
}
if (c == '\n')
{
result.line += 1;
result.character = 0;
}
else
{
result.character += 1;
}
++index;
}
assert(index < search.size());
result.character += character_offset;
return result;
}
void scanDirsUseRecursive(std::wstring const& rootPath, std::vector<std::wstring>& ret)
{
namespace fs = boost::filesystem;
fs::path fullpath(rootPath);
if (!fs::exists(fullpath))
{
return;
}
fs::recursive_directory_iterator end_iter;
for (fs::recursive_directory_iterator iter(fullpath); iter != end_iter; iter++)
{
try
{
if (fs::is_directory(*iter))
{
ret.push_back(iter->path().wstring());
}
}
catch (std::exception const&)
{
continue;
}
}
}
void scanDirsNoRecursive(std::wstring const& rootPath, std::vector<std::wstring>& ret)
{
namespace fs = boost::filesystem;
boost::filesystem::path myPath(rootPath);
if (!fs::exists(rootPath))
{
return;
}
boost::filesystem::directory_iterator endIter;
for (boost::filesystem::directory_iterator iter(myPath); iter != endIter; iter++)
{
if (boost::filesystem::is_directory(*iter))
{
ret.push_back(iter->path().wstring());
}
}
}
void scanFilesUseRecursive(std::wstring const& rootPath, std::vector<std::wstring>& ret, std::wstring suf)
{
namespace fs = boost::filesystem;
boost::to_lower(suf);
fs::path fullpath(rootPath);
if (!fs::exists(fullpath))
{
return;
}
fs::recursive_directory_iterator end_iter;
for (fs::recursive_directory_iterator iter(fullpath); iter != end_iter; iter++)
{
try
{
if (!fs::is_directory(*iter) && fs::is_regular_file(*iter))
{
auto temp_path = iter->path().wstring();
auto size = suf.size();
if (!size)
{
ret.push_back(std::move(temp_path));
}
else
{
if (temp_path.size() < size)
{
continue;
}
auto suf_temp = temp_path.substr(temp_path.size() - size);
boost::to_lower(suf_temp);
if (suf_temp == suf)
{
ret.push_back(std::move(temp_path));
}
}
}
}
catch (std::exception const&)
{
continue;
}
}
}
void scanFileNamesUseRecursive(std::wstring const& rootPath, std::vector<std::wstring>& ret, std::wstring strSuf)
{
scanFilesUseRecursive(rootPath, ret, strSuf);
std::vector<std::wstring> names;
for (auto& it : ret)
{
if (it.size() >= rootPath.size())
{
names.push_back(it.substr(rootPath.size()));
}
}
ret.swap(names);
}
void scanFileNamesUseRecursive(std::string const& rootPath, std::vector<std::string>& ret, std::string strSuf)
{
std::vector<std::wstring> out;
scanFileNamesUseRecursive(s2ws(rootPath), out, s2ws(strSuf));
for (auto& it : out)
{
ret.push_back(ws2s(it));
}
}
void scanFilesUseRecursive(std::string const& rootPath, std::vector<std::string>& ret, std::string strSuf)
{
std::vector<std::wstring> out;
scanFilesUseRecursive(s2ws(rootPath), out, s2ws(strSuf));
for (auto& it : out)
{
ret.push_back(ws2s(it));
}
}
} // namespace lsp
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