// Read an INI file into easy-to-access name/value pairs.

#include <cctype>
#include "../ini.h"
#include "INIReader.h"

using std::string;

INIReader::INIReader(string filename)
{
    _error = ini_parse(filename.c_str(), ValueHandler, this);
}

int INIReader::ParseError()
{
    return _error;
}

string INIReader::Get(string section, string name, string default_value)
{
    string key = MakeKey(section, name);
    return _values.count(key) ? _values[key] : default_value;
}

long INIReader::GetInteger(string section, string name, long default_value)
{
    const char* value = Get(section, name, "").c_str();
    char* end;
    // This parses "1234" (decimal) and also "0x4D2" (hex)
    long n = strtol(value, &end, 0);
    return end > value ? n : default_value;
}

string INIReader::MakeKey(string section, string name)
{
    string key = section + "." + name;
    // Convert to lower case to make lookups case-insensitive
    for (int i = 0; i < key.length(); i++)
        key[i] = tolower(key[i]);
    return key;
}

int INIReader::ValueHandler(void* user, const char* section, const char* name,
                            const char* value)
{
    INIReader* reader = (INIReader*)user;
    reader->_values[MakeKey(section, name)] = value;
    return 1;
}