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#include "config.h"
#include "sbo.h"
#include <algorithm>
#include <fstream>
#include <vector>
namespace katja
{
sbo::sbo()
: git_binary(boost::process::search_path("git"))
, cache_path(std::filesystem::path{ WORKDIR } / "sbo/repository")
{
}
info sbo::parse_info_file(
const std::filesystem::path& package_directory) const
{
std::map<std::string, std::vector<std::string>> results;
std::filesystem::path info_path = cache_path
/ package_directory
/ package_directory.filename().replace_extension(".info");
if (!std::filesystem::exists(info_path))
{
throw package_exception(package_directory.filename().string(), "Package doesn't exist.");
}
// Parse the info file.
std::ifstream info_file{ info_path, std::ios::in };
if (!info_file.is_open())
{
throw package_exception(package_directory.filename().string(), "Unable to open the .info file.");
}
std::string line;
std::string variable_name;
std::vector<std::string> variable_values;
while (std::getline(info_file, line))
{
std::string::const_iterator current_char = line.cbegin();
if (variable_name.empty())
{
current_char = std::find(current_char, line.cend(), '=');
if (current_char == line.cbegin() || current_char == line.cend())
{
break; // Expected 'variable name' or '='.
}
++current_char;
if (current_char == line.cend() || *current_char != '"')
{
break; // Expected '"'.
}
variable_name = std::string(line.cbegin(), current_char - 1);
variable_values.push_back("");
}
for (current_char += 1; current_char != line.end(); ++current_char)
{
if (*current_char == ' ')
{
if (!variable_values.back().empty())
{
variable_values.push_back("");
}
}
else if (*current_char == '"')
{
if (variable_values.back().empty())
{
variable_values.pop_back();
}
results.insert_or_assign(variable_name, variable_values);
variable_name = "";
variable_values.clear();
break;
}
else if (*current_char == '\\')
{
break;
}
else
{
variable_values.back().push_back(*current_char);
}
}
if (current_char == line.cend())
{
break; // Expected '\' or '"'.
}
}
info _info;
_info.prgnam = results["PRGNAM"][0];
_info.version = results["VERSION"][0];
_info.homepage = results["HOMEPAGE"].size() == 0 ? "" : results["HOMEPAGE"][0];
_info.download = results["DOWNLOAD"];
_info.md5sum = results["DOWNLOAD"];
_info.download_x86_64 = results["DOWNLOAD_X86_64"];
_info.md5sum_x86_64 = results["MD5SUM_X86_64"];
_info.requires = results["REQUIRES"];
_info.maintainer = results["MAINTAINER"][0];
_info.email = results["EMAIL"][0];
return _info;
}
std::unordered_map<std::string, std::filesystem::path> sbo::collect_packages() const
{
std::unordered_map<std::string, std::filesystem::path> results;
for (const auto& category_directory : std::filesystem::directory_iterator(cache_path))
{
if (!category_directory.is_directory())
{
continue;
}
for (const auto& package_directory : std::filesystem::directory_iterator(category_directory.path()))
{
results.insert({ package_directory.path().filename().string(),
category_directory.path().filename() });
}
}
return results;
}
std::unordered_map<std::string, package> sbo::list(const std::set<std::string>& package_names)
{
std::string line;
std::unordered_map<std::string, package> packages;
boost::process::environment slackbuild_environment;
slackbuild_environment["PRINT_PACKAGE_NAME"] = "y";
std::unordered_map<std::string, std::filesystem::path> package_categories = collect_packages();
for (const std::string& package_name : package_names)
{
std::unordered_map<std::string, std::filesystem::path>::iterator package_category =
package_categories.find(package_name);
if (package_category == package_categories.cend())
{
continue;
}
std::filesystem::path package_directory_name{ package_category->first };
std::filesystem::path slackbuild_cwd = cache_path
/ package_category->second / package_directory_name;
// Execute the SlackBuild to get package information.
std::filesystem::path slackbuild_file_name =
package_directory_name.replace_extension(".SlackBuild");
boost::process::ipstream slackbuild_output;
boost::process::child slackbuild_process("/bin/bash", slackbuild_file_name.native(),
slackbuild_environment,
boost::process::start_dir(slackbuild_cwd.native()),
boost::process::std_out > slackbuild_output,
boost::process::std_in.close(),
boost::process::std_err > boost::process::null);
std::optional<package> maybe_package;
if (slackbuild_process.running() && std::getline(slackbuild_output, line) && !line.empty())
{
maybe_package = package::parse(std::filesystem::path(line).replace_extension(""));
}
slackbuild_process.terminate();
if (maybe_package.has_value())
{
packages.insert({ maybe_package.value().name(), maybe_package.value() });
}
}
return packages;
}
void sbo::refresh()
{
std::filesystem::file_status repository_status = std::filesystem::status(cache_path);
if (std::filesystem::exists(repository_status)
&& !std::filesystem::is_directory(repository_status))
{
throw std::runtime_error("The working directory path \""
+ cache_path.string() + "\" exists, but it isn't a directory.");
}
else if (!std::filesystem::exists(repository_status))
{
git("clone", std::filesystem::path(),
"git://git.slackbuilds.org/slackbuilds.git", cache_path.native());
}
git("remote", cache_path.native(), "update", "--prune");
git("reset", cache_path.native(), "--hard", "origin/master");
}
std::forward_list<std::string> sbo::check_dependencies(const std::string& package_name)
{
std::unordered_map<std::string, std::filesystem::path> package_categories = collect_packages();
ordered_set resolved;
resolve_dependencies(package_name, package_categories, resolved);
std::forward_list<std::string> results;
for (const auto& dependency : resolved.get<1>())
{
results.push_front(dependency);
}
return results;
}
void sbo::resolve_dependencies(const std::string& package_name,
const std::unordered_map<std::string, std::filesystem::path>& package_categories,
ordered_set& resolved) const
{
std::unordered_map<std::string, std::filesystem::path>::const_iterator package_category =
package_categories.find(package_name);
if (package_category == package_categories.cend())
{
throw package_exception(package_name, "Package not found.");
}
info info_file = parse_info_file(package_category->second / package_category->first);
for (const auto& package_dependency : info_file.requires)
{
if (resolved.find(package_dependency) == resolved.cend())
{
resolve_dependencies(package_dependency, package_categories, resolved);
}
}
resolved.insert(package_name);
}
}
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