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dolphin/Source/Core/Common/IniFile.cpp

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// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
// see IniFile.h
#include <algorithm>
#include <cstddef>
#include <cstring>
#include <fstream>
#include <map>
#include <string>
#include <utility>
#include <vector>
#include "Common/CommonTypes.h"
#include "Common/FileUtil.h"
#include "Common/IniFile.h"
#include "Common/StringUtil.h"
namespace {
void ParseLine(const std::string& line, std::string* keyOut, std::string* valueOut)
{
if (line[0] == '#')
return;
int FirstEquals = (int)line.find("=", 0);
if (FirstEquals >= 0)
{
// Yes, a valid line!
*keyOut = StripSpaces(line.substr(0, FirstEquals));
if (valueOut) *valueOut = StripQuotes(StripSpaces(line.substr(FirstEquals + 1, std::string::npos)));
}
}
}
const std::string& IniFile::NULL_STRING = "";
void IniFile::Section::Set(const std::string& key, const std::string& newValue)
{
auto it = values.find(key);
if (it != values.end())
it->second = newValue;
else
{
values[key] = newValue;
keys_order.push_back(key);
}
}
void IniFile::Section::Set(const std::string& key, const std::string& newValue, const std::string& defaultValue)
{
if (newValue != defaultValue)
Set(key, newValue);
else
Delete(key);
}
void IniFile::Section::Set(const std::string& key, const float newValue, const float defaultValue)
{
if (newValue != defaultValue)
Set(key, newValue);
else
Delete(key);
}
void IniFile::Section::Set(const std::string& key, int newValue, int defaultValue)
{
if (newValue != defaultValue)
Set(key, newValue);
else
Delete(key);
}
void IniFile::Section::Set(const std::string& key, bool newValue, bool defaultValue)
{
if (newValue != defaultValue)
Set(key, newValue);
else
Delete(key);
}
void IniFile::Section::Set(const std::string& key, const std::vector<std::string>& newValues)
{
std::string temp;
// Join the strings with ,
for (const std::string& value : newValues)
{
temp = value + ",";
}
// remove last ,
temp.resize(temp.length() - 1);
Set(key, temp);
}
bool IniFile::Section::Get(const std::string& key, std::string* value, const std::string& defaultValue)
{
auto it = values.find(key);
if (it != values.end())
{
*value = it->second;
return true;
}
else if (&defaultValue != &NULL_STRING)
{
*value = defaultValue;
return true;
}
else
return false;
}
bool IniFile::Section::Get(const std::string& key, std::vector<std::string>& out)
{
std::string temp;
bool retval = Get(key, &temp);
if (!retval || temp.empty())
{
return false;
}
// ignore starting , if any
size_t subStart = temp.find_first_not_of(",");
// split by ,
while (subStart != std::string::npos)
{
// Find next ,
size_t subEnd = temp.find_first_of(",", subStart);
if (subStart != subEnd)
// take from first char until next ,
out.push_back(StripSpaces(temp.substr(subStart, subEnd - subStart)));
// Find the next non , char
subStart = temp.find_first_not_of(",", subEnd);
}
return true;
}
bool IniFile::Section::Get(const std::string& key, int* value, int defaultValue)
{
std::string temp;
bool retval = Get(key, &temp);
if (retval && TryParse(temp, value))
return true;
*value = defaultValue;
return false;
}
bool IniFile::Section::Get(const std::string& key, u32* value, u32 defaultValue)
{
std::string temp;
bool retval = Get(key, &temp);
if (retval && TryParse(temp, value))
return true;
*value = defaultValue;
return false;
}
bool IniFile::Section::Get(const std::string& key, bool* value, bool defaultValue)
{
std::string temp;
bool retval = Get(key, &temp);
if (retval && TryParse(temp, value))
return true;
*value = defaultValue;
return false;
}
bool IniFile::Section::Get(const std::string& key, float* value, float defaultValue)
{
std::string temp;
bool retval = Get(key, &temp);
if (retval && TryParse(temp, value))
return true;
*value = defaultValue;
return false;
}
bool IniFile::Section::Get(const std::string& key, double* value, double defaultValue)
{
std::string temp;
bool retval = Get(key, &temp);
if (retval && TryParse(temp, value))
return true;
*value = defaultValue;
return false;
}
bool IniFile::Section::Exists(const std::string& key) const
{
return values.find(key) != values.end();
}
bool IniFile::Section::Delete(const std::string& key)
{
auto it = values.find(key);
if (it == values.end())
return false;
values.erase(it);
keys_order.erase(std::find(keys_order.begin(), keys_order.end(), key));
return true;
}
// IniFile
const IniFile::Section* IniFile::GetSection(const std::string& sectionName) const
{
for (const Section& sect : sections)
if (!strcasecmp(sect.name.c_str(), sectionName.c_str()))
return (&(sect));
return 0;
}
IniFile::Section* IniFile::GetSection(const std::string& sectionName)
{
for (Section& sect : sections)
if (!strcasecmp(sect.name.c_str(), sectionName.c_str()))
return (&(sect));
return 0;
}
IniFile::Section* IniFile::GetOrCreateSection(const std::string& sectionName)
{
Section* section = GetSection(sectionName);
if (!section)
{
sections.push_back(Section(sectionName));
section = &sections[sections.size() - 1];
}
return section;
}
bool IniFile::DeleteSection(const std::string& sectionName)
{
Section* s = GetSection(sectionName);
if (!s)
return false;
for (auto iter = sections.begin(); iter != sections.end(); ++iter)
{
if (&(*iter) == s)
{
sections.erase(iter);
return true;
}
}
return false;
}
bool IniFile::Exists(const std::string& sectionName, const std::string& key) const
{
const Section* section = GetSection(sectionName);
if (!section)
return false;
return section->Exists(key);
}
void IniFile::SetLines(const std::string& sectionName, const std::vector<std::string> &lines)
{
Section* section = GetOrCreateSection(sectionName);
section->lines = lines;
}
bool IniFile::DeleteKey(const std::string& sectionName, const std::string& key)
{
Section* section = GetSection(sectionName);
if (!section)
return false;
return section->Delete(key);
}
// Return a list of all keys in a section
bool IniFile::GetKeys(const std::string& sectionName, std::vector<std::string>& keys) const
{
const Section* section = GetSection(sectionName);
if (!section)
return false;
keys = section->keys_order;
return true;
}
// Return a list of all lines in a section
bool IniFile::GetLines(const std::string& sectionName, std::vector<std::string>& lines, const bool remove_comments) const
{
const Section* section = GetSection(sectionName);
if (!section)
return false;
lines.clear();
for (std::string line : section->lines)
{
line = StripSpaces(line);
if (remove_comments)
{
int commentPos = (int)line.find('#');
if (commentPos == 0)
{
continue;
}
if (commentPos != (int)std::string::npos)
{
line = StripSpaces(line.substr(0, commentPos));
}
}
lines.push_back(line);
}
return true;
}
void IniFile::SortSections()
{
std::sort(sections.begin(), sections.end());
}
bool IniFile::Load(const std::string& filename, bool keep_current_data)
{
// Maximum number of letters in a line
static const int MAX_BYTES = 1024*32;
if (!keep_current_data)
sections.clear();
// first section consists of the comments before the first real section
// Open file
std::ifstream in;
OpenFStream(in, filename, std::ios::in);
if (in.fail()) return false;
Section* current_section = NULL;
while (!in.eof())
{
char templine[MAX_BYTES];
in.getline(templine, MAX_BYTES);
std::string line = templine;
#ifndef _WIN32
// Check for CRLF eol and convert it to LF
if (!line.empty() && line.at(line.size()-1) == '\r')
{
line.erase(line.size()-1);
}
#endif
if (line.size() > 0)
{
if (line[0] == '[')
{
size_t endpos = line.find("]");
if (endpos != std::string::npos)
{
// New section!
std::string sub = line.substr(1, endpos - 1);
current_section = GetOrCreateSection(sub);
}
}
else
{
if (current_section)
{
std::string key, value;
ParseLine(line, &key, &value);
// Lines starting with '$', '*' or '+' are kept verbatim.
// Kind of a hack, but the support for raw lines inside an
// INI is a hack anyway.
if ((key == "" && value == "")
|| (line.size() >= 1 && (line[0] == '$' || line[0] == '+' || line[0] == '*')))
current_section->lines.push_back(line);
else
current_section->Set(key, value);
}
}
}
}
in.close();
return true;
}
bool IniFile::Save(const std::string& filename)
{
std::ofstream out;
std::string temp = File::GetTempFilenameForAtomicWrite(filename);
OpenFStream(out, temp, std::ios::out);
if (out.fail())
{
return false;
}
for (const Section& section : sections)
{
if (section.keys_order.size() != 0 || section.lines.size() != 0)
out << "[" << section.name << "]" << std::endl;
if (section.keys_order.size() == 0)
{
for (const std::string& s : section.lines)
out << s << std::endl;
}
else
{
for (const std::string& kvit : section.keys_order)
{
auto pair = section.values.find(kvit);
out << pair->first << " = " << pair->second << std::endl;
}
}
}
out.close();
return File::RenameSync(temp, filename);
}
bool IniFile::Get(const std::string& sectionName, const std::string& key, std::vector<std::string>& values)
{
Section *section = GetSection(sectionName);
if (!section)
return false;
return section->Get(key, values);
}
bool IniFile::Get(const std::string& sectionName, const std::string& key, int* value, int defaultValue)
{
Section *section = GetSection(sectionName);
if (!section) {
*value = defaultValue;
return false;
} else {
return section->Get(key, value, defaultValue);
}
}
bool IniFile::Get(const std::string& sectionName, const std::string& key, u32* value, u32 defaultValue)
{
Section *section = GetSection(sectionName);
if (!section) {
*value = defaultValue;
return false;
} else {
return section->Get(key, value, defaultValue);
}
}
bool IniFile::Get(const std::string& sectionName, const std::string& key, bool* value, bool defaultValue)
{
Section *section = GetSection(sectionName);
if (!section) {
*value = defaultValue;
return false;
} else {
return section->Get(key, value, defaultValue);
}
}
bool IniFile::Get(const std::string& sectionName, const std::string& key, std::string* value, const std::string& defaultValue)
{
Section* section = GetSection(sectionName);
if (!section) {
if (&defaultValue != &NULL_STRING) {
*value = defaultValue;
}
return false;
}
return section->Get(key, value, defaultValue);
}
// Unit test. TODO: Move to the real unit test framework.
/*
int main()
{
IniFile ini;
ini.Load("my.ini");
ini.Set("Hej", "A", "amaskdfl");
ini.Set("Mossa", "A", "amaskdfl");
ini.Set("Aissa", "A", "amaskdfl");
//ini.Read("my.ini");
std::string x;
ini.Get("Hej", "B", &x, "boo");
ini.DeleteKey("Mossa", "A");
ini.DeleteSection("Mossa");
ini.SortSections();
ini.Save("my.ini");
//UpdateVars(ini);
return 0;
}
*/
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