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// -*- c++ -*-
// Distributed under the BSD 2-Clause License.
// See accompanying file LICENSE for details.
#include "util.h"
#include <iostream>
#include <fstream>
#include <algorithm>
namespace {
char to_lower_c(char ch)
{
return static_cast<char>(::tolower(ch));
}
}
std::string to_lower(const std::string& str)
{
std::string out{str};
std::transform(out.begin(), out.end(), out.begin(), to_lower_c);
return out;
}
std::string readFile(const std::string& fileName)
{
std::ifstream ifs(fileName.c_str(),
std::ios::in | std::ios::binary | std::ios::ate);
auto tell = ifs.tellg();
if(tell < 0)
{
return {};
}
auto fileSize = static_cast<std::size_t>(tell);
ifs.seekg(0, std::ios::beg);
std::vector<char> bytes(fileSize);
ifs.read(bytes.data(), static_cast<std::streamsize>(bytes.size()));
return { bytes.data(), bytes.size() };
}
std::vector<std::string> readDeps(const std::string& depFile)
{
return {};// TODO: parse json
if(!std::filesystem::exists(depFile))
{
return {};
}
auto str = readFile(depFile);
std::vector<std::string> output;
std::string tmp;
bool start{false};
bool in_whitespace{false};
for(const auto& c : str)
{
if(c == '\\' || c == '\n')
{
continue;
}
if(c == ':')
{
start = true;
continue;
}
if(!start)
{
continue;
}
if(c == ' ' || c == '\t')
{
if(in_whitespace)
{
continue;
}
if(!tmp.empty())
{
output.push_back(tmp);
}
tmp.clear();
in_whitespace = true;
}
else
{
in_whitespace = false;
tmp += c;
}
}
if(!tmp.empty())
{
output.push_back(tmp);
}
return output;
}
ctor::language languageFromExtension(const std::filesystem::path& file)
{
auto ext = file.extension().string();
// First a few case sensitive comparisons
if(ext == ".c")
{
return ctor::language::c;
}
if(ext == ".C")
{
return ctor::language::cpp;
}
// The rest are compared in lowercase
ext = to_lower(ext);
if(ext == ".cc" ||
ext == ".cpp" ||
ext == ".c++" ||
ext == ".cp" ||
ext == ".cxx")
{
return ctor::language::cpp;
}
if(ext == ".s" ||
ext == ".asm")
{
return ctor::language::assembler;
}
std::cerr << "Could not deduce language from " << file.string() << "\n";
exit(1);
return {};
}
namespace
{
bool isClean(char c)
{
return c != '.' && c != '/';
}
}
std::string cleanUp(const std::string& path)
{
std::string cleaned;
for(const auto& c : path)
{
if(isClean(c))
{
cleaned += c;
}
else
{
cleaned += '_';
}
}
return cleaned;
}
std::string esc(const std::string& in)
{
std::string out;
for(auto c : in)
{
switch(c)
{
case '\\': out += "\\\\"; break;
case '"': out += "\\\""; break;
default:
out += c;
break;
}
}
return out;
}
std::vector<std::string> get_paths(const std::string& path_env)
{
std::vector<std::string> paths;
#ifdef _WIN32
const char sep{';'};
#else
const char sep{':'};
#endif
std::stringstream ss(path_env);
std::string path;
while (std::getline(ss, path, sep))
{
paths.push_back(path);
}
return paths;
}
bool check_executable(const std::filesystem::path& prog)
{
auto perms = std::filesystem::status(prog).permissions();
if((perms & std::filesystem::perms::owner_exec) != std::filesystem::perms::none)
{
return true;
}
if((perms & std::filesystem::perms::group_exec) != std::filesystem::perms::none)
{
return true;
}
if((perms & std::filesystem::perms::others_exec) != std::filesystem::perms::none)
{
return true;
}
return false;
}
std::string locate(const std::string& prog,
const std::vector<std::string>& paths,
const std::string& arch)
{
std::string program = prog;
if(!arch.empty())
{
program = arch + "-" + prog;
}
// first check if arch contains an absolute path to prog
if(std::filesystem::exists(program))
{
if(check_executable(program))
{
return program;
}
}
for(const auto& path_str : paths)
{
std::filesystem::path path(path_str);
auto prog_path = path / program;
if(std::filesystem::exists(prog_path))
{
if(check_executable(prog_path))
{
return prog_path.string();
}
}
}
return {};
}
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