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CConfigFile.cpp
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CConfigFile.cpp
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#include <AK/StringBuilder.h>
#include <LibCore/CConfigFile.h>
#include <LibCore/CFile.h>
#include <LibCore/CUserInfo.h>
#include <pwd.h>
#include <stdio.h>
#include <unistd.h>
Retained<CConfigFile> CConfigFile::get_for_app(const String& app_name)
{
String home_path = get_current_user_home_path();
if (home_path == "/")
home_path = String::format("/tmp");
auto path = String::format("%s/%s.ini", home_path.characters(), app_name.characters());
return adopt(*new CConfigFile(path));
}
Retained<CConfigFile> CConfigFile::get_for_system(const String& app_name)
{
auto path = String::format("/etc/%s.ini", app_name.characters());
return adopt(*new CConfigFile(path));
}
CConfigFile::CConfigFile(const String& file_name)
: m_file_name(file_name)
{
reparse();
}
CConfigFile::~CConfigFile()
{
sync();
}
void CConfigFile::reparse()
{
m_groups.clear();
CFile file(m_file_name);
if (!file.open(CIODevice::OpenMode::ReadOnly))
return;
HashMap<String, String>* current_group = nullptr;
while (file.can_read_line()) {
auto line = file.read_line(BUFSIZ);
auto* cp = (const char*)line.pointer();
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 CConfigFile::read_entry(const String& group, const String& key, const String& default_value) const
{
if (!has_key(group, key)) {
const_cast<CConfigFile&>(*this).write_entry(group, key, default_value);
return default_value;
}
auto it = m_groups.find(group);
auto jt = it->value.find(key);
return jt->value;
}
int CConfigFile::read_num_entry(const String& group, const String& key, int default_value) const
{
if (!has_key(group, key)) {
const_cast<CConfigFile&>(*this).write_num_entry(group, key, default_value);
return default_value;
}
bool ok;
int value = read_entry(group, key).to_uint(ok);
if (!ok)
return default_value;
return value;
}
Color CConfigFile::read_color_entry(const String& group, const String& key, Color default_value) const
{
if (!has_key(group, key)) {
const_cast<CConfigFile&>(*this).write_color_entry(group, key, default_value);
return default_value;
}
auto shades = read_entry(group, key).split(',');
if (shades.size() < 3)
return default_value;
bool ok1 = true,
ok2 = true,
ok3 = true,
ok4 = true;
Color value;
if (shades.size() == 3) {
value = Color(shades[0].to_uint(ok1),
shades[1].to_uint(ok2),
shades[2].to_uint(ok3));
} else {
value = Color(shades[0].to_uint(ok1),
shades[1].to_uint(ok2),
shades[2].to_uint(ok3),
shades[3].to_uint(ok4));
}
if (!(ok1 && ok2 && ok3 && ok4))
return default_value;
return value;
}
bool CConfigFile::read_bool_entry(const String& group, const String& key, bool default_value) const
{
return read_entry(group, key, default_value ? "1" : "0") == "1";
}
void CConfigFile::write_entry(const String& group, const String& key, const String& value)
{
m_groups.ensure(group).ensure(key) = value;
m_dirty = true;
}
void CConfigFile::write_num_entry(const String& group, const String& key, int value)
{
write_entry(group, key, String::format("%d", value));
}
void CConfigFile::write_color_entry(const String& group, const String& key, Color value)
{
write_entry(group, key, String::format("%d,%d,%d,%d", value.red(), value.green(), value.blue(), value.alpha()));
}
bool CConfigFile::sync()
{
if (!m_dirty)
return true;
FILE* fp = fopen(m_file_name.characters(), "wb");
if (!fp)
return false;
for (auto& it : m_groups) {
fprintf(fp, "[%s]\n", it.key.characters());
for (auto& jt : it.value)
fprintf(fp, "%s=%s\n", jt.key.characters(), jt.value.characters());
fprintf(fp, "\n");
}
fclose(fp);
m_dirty = false;
return true;
}
void CConfigFile::dump() const
{
for (auto& it : m_groups) {
printf("[%s]\n", it.key.characters());
for (auto& jt : it.value)
printf("%s=%s\n", jt.key.characters(), jt.value.characters());
printf("\n");
}
}
Vector<String> CConfigFile::groups() const
{
return m_groups.keys();
}
Vector<String> CConfigFile::keys(const String& group) const
{
auto it = m_groups.find(group);
if (it == m_groups.end())
return {};
return it->value.keys();
}
bool CConfigFile::has_key(const String& group, const String& key) const
{
auto it = m_groups.find(group);
if (it == m_groups.end())
return {};
return it->value.contains(key);
}
bool CConfigFile::has_group(const String& group) const
{
return m_groups.contains(group);
}
void CConfigFile::remove_group(const String& group)
{
m_groups.remove(group);
m_dirty = true;
}
void CConfigFile::remove_entry(const String& group, const String& key)
{
auto it = m_groups.find(group);
if (it == m_groups.end())
return;
it->value.remove(key);
m_dirty = true;
}