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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Jakob-Niklas See <git@nwex.de>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/StringBuilder.h>
#include <LibCore/ConfigFile.h>
#include <LibCore/File.h>
#include <LibCore/StandardPaths.h>
#include <pwd.h>
#include <stdio.h>
namespace Core {
NonnullRefPtr<ConfigFile> ConfigFile::open_for_lib(String const& lib_name, AllowWriting allow_altering)
{
String directory = StandardPaths::config_directory();
auto path = String::formatted("{}/lib/{}.ini", directory, lib_name);
return adopt_ref(*new ConfigFile(path, allow_altering));
}
NonnullRefPtr<ConfigFile> ConfigFile::open_for_app(String const& app_name, AllowWriting allow_altering)
{
String directory = StandardPaths::config_directory();
auto path = String::formatted("{}/{}.ini", directory, app_name);
return adopt_ref(*new ConfigFile(path, allow_altering));
}
NonnullRefPtr<ConfigFile> ConfigFile::open_for_system(String const& app_name, AllowWriting allow_altering)
{
auto path = String::formatted("/etc/{}.ini", app_name);
return adopt_ref(*new ConfigFile(path, allow_altering));
}
NonnullRefPtr<ConfigFile> ConfigFile::open(String const& filename, AllowWriting allow_altering)
{
return adopt_ref(*new ConfigFile(filename, allow_altering));
}
NonnullRefPtr<ConfigFile> ConfigFile::open(String const& filename, int fd)
{
return adopt_ref(*new ConfigFile(filename, fd));
}
ConfigFile::ConfigFile(const String& filename, AllowWriting allow_altering)
: m_file(File::construct(filename))
{
if (!m_file->open(allow_altering == AllowWriting::Yes ? OpenMode::ReadWrite : OpenMode::ReadOnly))
return;
reparse();
}
ConfigFile::ConfigFile(String const& filename, int fd)
: m_file(File::construct(filename))
{
if (!m_file->open(fd, OpenMode::ReadWrite, File::ShouldCloseFileDescriptor::Yes))
return;
reparse();
}
ConfigFile::~ConfigFile()
{
sync();
}
void ConfigFile::reparse()
{
m_groups.clear();
HashMap<String, String>* current_group = nullptr;
while (m_file->can_read_line()) {
auto line = m_file->read_line();
auto* cp = line.characters();
while (*cp && (*cp == ' ' || *cp == '\t' || *cp == '\n'))
++cp;
switch (*cp) {
case '\0': // EOL...
case '#': // Comment, skip entire line.
case ';': // -||-
continue;
case '[': { // Start of new group.
StringBuilder builder;
++cp; // Skip the '['
while (*cp && (*cp != ']'))
builder.append(*(cp++));
current_group = &m_groups.ensure(builder.to_string());
break;
}
default: { // Start of key{
StringBuilder key_builder;
StringBuilder value_builder;
while (*cp && (*cp != '='))
key_builder.append(*(cp++));
++cp; // Skip the '='
while (*cp && (*cp != '\n'))
value_builder.append(*(cp++));
if (!current_group) {
// We're not in a group yet, create one with the name ""...
current_group = &m_groups.ensure("");
}
current_group->set(key_builder.to_string(), value_builder.to_string());
}
}
}
}
String ConfigFile::read_entry(String const& group, String const& key, String const& default_value) const
{
if (!has_key(group, key)) {
return default_value;
}
auto it = m_groups.find(group);
auto jt = it->value.find(key);
return jt->value;
}
int ConfigFile::read_num_entry(String const& group, String const& key, int default_value) const
{
if (!has_key(group, key)) {
return default_value;
}
return read_entry(group, key).to_int().value_or(default_value);
}
bool ConfigFile::read_bool_entry(String const& group, String const& key, bool default_value) const
{
auto value = read_entry(group, key, default_value ? "1" : "0");
if (value == "1" || value.to_lowercase() == "true")
return 1;
return 0;
}
void ConfigFile::write_entry(String const& group, String const& key, String const& value)
{
m_groups.ensure(group).ensure(key) = value;
m_dirty = true;
}
void ConfigFile::write_num_entry(String const& group, String const& key, int value)
{
write_entry(group, key, String::number(value));
}
void ConfigFile::write_bool_entry(String const& group, String const& key, bool value)
{
write_entry(group, key, value ? "1" : "0");
}
void ConfigFile::write_color_entry(String const& group, String const& key, Color value)
{
write_entry(group, key, String::formatted("{},{},{},{}", value.red(), value.green(), value.blue(), value.alpha()));
}
bool ConfigFile::sync()
{
if (!m_dirty)
return true;
m_file->truncate(0);
m_file->seek(0);
for (auto& it : m_groups) {
m_file->write(String::formatted("[{}]\n", it.key));
for (auto& jt : it.value)
m_file->write(String::formatted("{}={}\n", jt.key, jt.value));
m_file->write("\n");
}
m_dirty = false;
return true;
}
void ConfigFile::dump() const
{
for (auto& it : m_groups) {
outln("[{}]", it.key);
for (auto& jt : it.value)
outln("{}={}", jt.key, jt.value);
outln();
}
}
Vector<String> ConfigFile::groups() const
{
return m_groups.keys();
}
Vector<String> ConfigFile::keys(String const& group) const
{
auto it = m_groups.find(group);
if (it == m_groups.end())
return {};
return it->value.keys();
}
bool ConfigFile::has_key(String const& group, String const& key) const
{
auto it = m_groups.find(group);
if (it == m_groups.end())
return {};
return it->value.contains(key);
}
bool ConfigFile::has_group(String const& group) const
{
return m_groups.contains(group);
}
void ConfigFile::remove_group(String const& group)
{
m_groups.remove(group);
m_dirty = true;
}
void ConfigFile::remove_entry(String const& group, String const& key)
{
auto it = m_groups.find(group);
if (it == m_groups.end())
return;
it->value.remove(key);
m_dirty = true;
}
}
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