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#include "file.h"
#include <algorithm>
#include <string>
#include <unordered_set>
#include <libreichwein/stringhelper.h>
#include "env.h"
namespace fs = std::filesystem;
using namespace std::string_literals;
const fs::path YMakefile{"YMakefile"};
// type of file can be built from dependencies
bool is_buildable_by_extension(const fs::path& p) {
fs::path ext{p.extension()};
return ext.empty() || ext == ".o" || is_dynamic_lib(p) || is_dynamic_lib_link(p) || is_static_lib(p) ;
}
namespace {
std::unordered_set<fs::path> compile_unit_source_types{".cpp", ".c", ".cc", ".S", ".rs"};
}
// type of file is source of compile unit (no included types like headers)
bool is_compile_unit_source_by_extension(const fs::path& p) {
fs::path ext{p.extension()};
return compile_unit_source_types.find(ext) != compile_unit_source_types.end();
}
bool is_executable_target(const std::filesystem::path& p)
{
return p.extension().empty();
}
// e.g. libxyz.so.1.2.3 (the shorter versions are links to this one)
bool is_dynamic_lib(const std::filesystem::path& p)
{
std::string name{p.filename()};
return name.find(".so.") != name.npos && std::count(name.begin(), name.end(), '.') == 4;
}
// e.g. libxyz.so.1 libxyz.so
bool is_dynamic_lib_link(const std::filesystem::path& p)
{
std::string name{p.filename()};
return name.find(".so") != name.npos && std::count(name.begin(), name.end(), '.') < 4;
}
// in: libxyz.so.1.2.3
// out: libxyz.so.1
std::filesystem::path soname_shorter(const std::filesystem::path& p)
{
std::string name{p.filename()};
if (std::count(name.begin(), name.end(), '.') != 4) {
throw std::runtime_error("Unexpected soname: "s + name + ", 4 dots expected.");
}
size_t pos{0};
for (int i = 0; i < 3; ++i) {
pos = name.find('.', pos);
++pos;
}
name = name.substr(0, pos - 1);
fs::path result{p};
result.replace_filename(name);
return result;
}
// in: libxyz.so.1.2.3
// out: libxyz.so
std::filesystem::path soname_short(const std::filesystem::path& p)
{
std::string name{p.filename()};
if (std::count(name.begin(), name.end(), '.') != 4) {
throw std::runtime_error("Unexpected soname: "s + name + ", 4 dots expected.");
}
size_t pos{0};
for (int i = 0; i < 2; ++i) {
pos = name.find('.', pos);
++pos;
}
name = name.substr(0, pos - 1);
fs::path result{p};
result.replace_filename(name);
return result;
}
// e.g.
// subdir1/libxyz.so.1.2.3 -> xyz
// libabc.so -> abc
// file1.so.1 -> file1
std::string dynamic_lib_name(const std::filesystem::path& p)
{
std::string result {p.filename().string()};
if (result.substr(0, 3) == "lib") {
result = result.substr(3);
}
size_t dotpos{result.find('.')};
if (dotpos == std::string::npos) {
throw std::runtime_error("Unexpected path: Expected dot (.) in: "s + p.string());
}
result = result.substr(0, dotpos);
return result;
}
bool is_static_lib(const std::filesystem::path& p)
{
return p.extension() == ".a";
}
std::filesystem::path simplified_path(const std::filesystem::path& p)
{
if (p.string().substr(0, 2) == "./") {
return p.string().substr(2);
}
return p;
}
std::filesystem::path lib_path(const std::filesystem::path& p)
{
fs::path result{p.parent_path()};
if (result.empty()) {
result = ".";
}
return result;
}
bool is_executable_command(const std::string& file) {
std::vector<std::string> paths {Reichwein::Stringhelper::split(env_value("PATH"), ":")};
for (const auto& i: paths) {
fs::path path{i + "/" + file};
if (fs::exists(path) && (fs::status(path).permissions() & std::filesystem::perms::others_exec) != std::filesystem::perms::none) {
return true;
}
}
return false;
}
std::string find_executable(const std::vector<std::string>& list) {
std::vector<std::string> paths {Reichwein::Stringhelper::split(env_value("PATH"), ":")};
for (const auto& i: list) {
for (const auto& j: paths) {
fs::path path{j + "/" + i};
if (fs::exists(path) && (fs::status(path).permissions() & std::filesystem::perms::others_exec) != std::filesystem::perms::none) {
return i;
}
}
}
return {};
}
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