dolphin/Source/Core/Common/Src/IniFile.cpp

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// Copyright (C) 2003 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
// see IniFile.h
#include <stdlib.h>
#include <stdio.h>
#include <string>
#include <vector>
#include <iostream>
#include <fstream>
#include <algorithm>
#include "StringUtil.h"
#include "IniFile.h"
namespace {
static void ParseLine(const std::string& line, std::string* keyOut, std::string* valueOut, std::string* commentOut)
{
int FirstEquals = (int)line.find("=", 0);
int FirstCommentChar = -1;
// Comments
if (FirstCommentChar < 0)
FirstCommentChar =
(int)line.find("#", FirstEquals > 0 ? FirstEquals : 0);
if (FirstCommentChar < 0 && line[0] == ';')
FirstCommentChar = 0;
// Allow preservation of spacing before comment
if (FirstCommentChar > 0)
{
while (line[FirstCommentChar - 1] == ' ' || line[FirstCommentChar - 1] == 9) // 9 == tab
{
FirstCommentChar--;
}
}
if ((FirstEquals >= 0) && ((FirstCommentChar < 0) || (FirstEquals < FirstCommentChar)))
{
// Yes, a valid line!
*keyOut = StripSpaces(line.substr(0, FirstEquals));
if (commentOut) *commentOut = FirstCommentChar > 0 ? line.substr(FirstCommentChar) : std::string("");
if (valueOut) *valueOut = StripQuotes(StripSpaces(line.substr(FirstEquals + 1, FirstCommentChar - FirstEquals - 1)));
}
}
}
std::string* IniFile::Section::GetLine(const char* key, std::string* valueOut, std::string* commentOut)
{
for (std::vector<std::string>::iterator iter = lines.begin(); iter != lines.end(); ++iter)
{
std::string& line = *iter;
std::string lineKey;
ParseLine(line, &lineKey, valueOut, commentOut);
if (!strcasecmp(lineKey.c_str(), key))
return &line;
}
return 0;
}
void IniFile::Section::Set(const char* key, const char* newValue)
{
std::string value, commented;
std::string* line = GetLine(key, &value, &commented);
if (line)
{
// Change the value - keep the key and comment
*line = StripSpaces(key) + " = " + newValue + commented;
}
else
{
// The key did not already exist in this section - let's add it.
lines.push_back(std::string(key) + " = " + newValue);
}
}
void IniFile::Section::Set(const char* key, const std::string& newValue, const std::string& defaultValue)
{
if (newValue != defaultValue)
Set(key, newValue);
else
Delete(key);
}
bool IniFile::Section::Get(const char* key, std::string* value, const char* defaultValue)
{
std::string* line = GetLine(key, value, 0);
if (!line)
{
if (defaultValue)
{
*value = defaultValue;
}
return false;
}
return true;
}
void IniFile::Section::Set(const char* key, const float newValue, const float defaultValue)
{
if (newValue != defaultValue)
Set(key, newValue);
else
Delete(key);
}
void IniFile::Section::Set(const char* key, int newValue, int defaultValue)
{
if (newValue != defaultValue)
Set(key, newValue);
else
Delete(key);
}
void IniFile::Section::Set(const char* key, bool newValue, bool defaultValue)
{
if (newValue != defaultValue)
Set(key, newValue);
else
Delete(key);
}
void IniFile::Section::Set(const char* key, const std::vector<std::string>& newValues)
{
std::string temp;
// Join the strings with ,
std::vector<std::string>::const_iterator it;
for (it = newValues.begin(); it != newValues.end(); ++it)
{
temp = (*it) + ",";
}
// remove last ,
temp.resize(temp.length() - 1);
Set(key, temp.c_str());
}
bool IniFile::Section::Get(const char* key, std::vector<std::string>& values)
{
std::string temp;
bool retval = Get(key, &temp, 0);
if (!retval || temp.empty())
{
return false;
}
// ignore starting , if any
size_t subStart = temp.find_first_not_of(",");
size_t subEnd;
// split by ,
while (subStart != std::string::npos) {
// Find next ,
subEnd = temp.find_first_of(",", subStart);
if (subStart != subEnd)
// take from first char until next ,
values.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 char* key, int* value, int defaultValue)
{
std::string temp;
bool retval = Get(key, &temp, 0);
if (retval && TryParse(temp.c_str(), value))
return true;
*value = defaultValue;
return false;
}
bool IniFile::Section::Get(const char* key, u32* value, u32 defaultValue)
{
std::string temp;
bool retval = Get(key, &temp, 0);
if (retval && TryParse(temp, value))
return true;
*value = defaultValue;
return false;
}
bool IniFile::Section::Get(const char* key, bool* value, bool defaultValue)
{
std::string temp;
bool retval = Get(key, &temp, 0);
if (retval && TryParse(temp.c_str(), value))
return true;
*value = defaultValue;
return false;
}
bool IniFile::Section::Get(const char* key, float* value, float defaultValue)
{
std::string temp;
bool retval = Get(key, &temp, 0);
if (retval && TryParse(temp.c_str(), value))
return true;
*value = defaultValue;
return false;
}
bool IniFile::Section::Get(const char* key, double* value, double defaultValue)
{
std::string temp;
bool retval = Get(key, &temp, 0);
if (retval && TryParse(temp.c_str(), value))
return true;
*value = defaultValue;
return false;
}
bool IniFile::Section::Exists(const char *key) const
{
for (std::vector<std::string>::const_iterator iter = lines.begin(); iter != lines.end(); ++iter)
{
std::string lineKey;
ParseLine(*iter, &lineKey, NULL, NULL);
if (!strcasecmp(lineKey.c_str(), key))
return true;
}
return false;
}
bool IniFile::Section::Delete(const char *key)
{
std::string* line = GetLine(key, 0, 0);
for (std::vector<std::string>::iterator liter = lines.begin(); liter != lines.end(); ++liter)
{
if (line == &*liter)
{
lines.erase(liter);
return true;
}
}
return false;
}
// IniFile
const IniFile::Section* IniFile::GetSection(const char* sectionName) const
{
for (std::vector<Section>::const_iterator iter = sections.begin(); iter != sections.end(); ++iter)
if (!strcasecmp(iter->name.c_str(), sectionName))
return (&(*iter));
return 0;
}
IniFile::Section* IniFile::GetSection(const char* sectionName)
{
for (std::vector<Section>::iterator iter = sections.begin(); iter != sections.end(); ++iter)
if (!strcasecmp(iter->name.c_str(), sectionName))
return (&(*iter));
return 0;
}
IniFile::Section* IniFile::GetOrCreateSection(const char* sectionName)
{
Section* section = GetSection(sectionName);
if (!section)
{
sections.push_back(Section(sectionName));
section = &sections[sections.size() - 1];
}
return section;
}
bool IniFile::DeleteSection(const char* sectionName)
{
Section* s = GetSection(sectionName);
if (!s)
return false;
for (std::vector<Section>::iterator iter = sections.begin(); iter != sections.end(); ++iter)
{
if (&(*iter) == s)
{
sections.erase(iter);
return true;
}
}
return false;
}
bool IniFile::Exists(const char* sectionName, const char* key) const
{
const Section* section = GetSection(sectionName);
if (!section)
return false;
return section->Exists(key);
}
void IniFile::SetLines(const char* sectionName, const std::vector<std::string> &lines)
{
Section* section = GetOrCreateSection(sectionName);
section->lines.clear();
for (std::vector<std::string>::const_iterator iter = lines.begin(); iter != lines.end(); ++iter)
{
section->lines.push_back(*iter);
}
}
bool IniFile::DeleteKey(const char* sectionName, const char* key)
{
Section* section = GetSection(sectionName);
if (!section)
return false;
std::string* line = section->GetLine(key, 0, 0);
for (std::vector<std::string>::iterator liter = section->lines.begin(); liter != section->lines.end(); ++liter)
{
if (line == &(*liter))
{
section->lines.erase(liter);
return true;
}
}
return false; //shouldn't happen
}
// Return a list of all keys in a section
bool IniFile::GetKeys(const char* sectionName, std::vector<std::string>& keys) const
{
const Section* section = GetSection(sectionName);
if (!section)
return false;
keys.clear();
for (std::vector<std::string>::const_iterator liter = section->lines.begin(); liter != section->lines.end(); ++liter)
{
std::string key;
ParseLine(*liter, &key, 0, 0);
keys.push_back(key);
}
return true;
}
// Return a list of all lines in a section
bool IniFile::GetLines(const char* sectionName, std::vector<std::string>& lines, const bool remove_comments) const
{
const Section* section = GetSection(sectionName);
if (!section)
return false;
lines.clear();
for (std::vector<std::string>::const_iterator iter = section->lines.begin(); iter != section->lines.end(); ++iter)
{
std::string line = StripSpaces(*iter);
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 char* filename)
{
// Maximum number of letters in a line
static const int MAX_BYTES = 1024*32;
sections.clear();
sections.push_back(Section(""));
// first section consists of the comments before the first real section
// Open file
std::ifstream in;
in.open(filename, std::ios::in);
if (in.fail()) return false;
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 (in.eof()) break;
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);
sections.push_back(Section(sub));
if (endpos + 1 < line.size())
{
sections[sections.size() - 1].comment = line.substr(endpos + 1);
}
}
}
else
{
sections[sections.size() - 1].lines.push_back(line);
}
}
}
in.close();
return true;
}
bool IniFile::Save(const char* filename)
{
std::ofstream out;
out.open(filename, std::ios::out);
if (out.fail())
{
return false;
}
for (std::vector<Section>::const_iterator iter = sections.begin(); iter != sections.end(); ++iter)
{
const Section& section = *iter;
if (section.name != "")
{
out << "[" << section.name << "]" << section.comment << std::endl;
}
for (std::vector<std::string>::const_iterator liter = section.lines.begin(); liter != section.lines.end(); ++liter)
{
std::string s = *liter;
out << s << std::endl;
}
}
out.close();
return true;
}
bool IniFile::Get(const char* sectionName, const char* key, std::string* value, const char* defaultValue)
{
Section* section = GetSection(sectionName);
if (!section) {
if (defaultValue) {
*value = defaultValue;
}
return false;
}
return section->Get(key, value, defaultValue);
}
bool IniFile::Get(const char *sectionName, const char* key, std::vector<std::string>& values)
{
Section *section = GetSection(sectionName);
if (!section)
return false;
return section->Get(key, values);
}
bool IniFile::Get(const char* sectionName, const char* 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 char* sectionName, const char* 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 char* sectionName, const char* key, bool* value, bool defaultValue)
{
Section *section = GetSection(sectionName);
if (!section) {
*value = defaultValue;
return false;
} else {
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;
}
*/