added ConfigHandler from OLX (for reading a single option out of a ini-file)
git-svn-id: https://clonekeenplus.svn.sourceforge.net/svnroot/clonekeenplus/cgenius/trunk@144 4df4b0f3-56ce-47cb-b001-ed939b7d65a6
This commit is contained in:
albertzeyer
279
src/ConfigHandler.cpp
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279
src/ConfigHandler.cpp
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/////////////////////////////////////////
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//
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// OpenLieroX
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//
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// Auxiliary Software class library
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//
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// based on the work of JasonB
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// enhanced by Dark Charlie and Albert Zeyer
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//
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// code under LGPL
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//
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/////////////////////////////////////////
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// Config file handler
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// Created 30/9/01
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// By Jason Boettcher
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#include <map>
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#include <string>
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#include "ConfigHandler.h"
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#include "FindFile.h"
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#include "StringUtils.h"
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#include "MathLib.h"
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typedef std::map<std::string, int, stringcaseless> KeywordMap;
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static KeywordMap Keywords;
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// Internal
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static bool GetString(const std::string& filename, const std::string& section, const std::string& key, std::string& string, bool abs_fn = false);
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///////////////////
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// Add a keyword to the list
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bool AddKeyword(const std::string& key, int value)
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{
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Keywords[key] = value;
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return true;
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}
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///////////////////
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// Read a keyword from a file
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bool ReadKeyword(const std::string& filename, const std::string& section, const std::string& key, int *value, int defaultv)
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{
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std::string string;
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*value = defaultv;
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if(!GetString(filename,section,key,string))
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return false;
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// Try and find a keyword with matching keys
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KeywordMap::iterator f = Keywords.find(string);
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if(f != Keywords.end()) {
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//notes << filename << ":" << section << "." << key << ": " << f->first << "(" << string << ") = " << f->second << endl;
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*value = f->second;
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return true;
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}
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warnings << filename << ":" << section << "." << key << ": '" << string << "' is an unknown keyword" << endl;
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return false;
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}
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///////////////////
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// Read a keyword from a file (bool version)
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bool ReadKeyword(const std::string& filename, const std::string& section, const std::string& key, bool *value, bool defaultv)
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{
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int v = defaultv ? 1 : 0;
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bool ret = ReadKeyword(filename, section, key, &v, defaultv ? 1 : 0);
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*value = v != 0;
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return ret;
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}
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///////////////////
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// Read bit flags specified by keywords from a file
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bool ReadKeywordList(const std::string& filename, const std::string& section, const std::string& key, int *value, int defaultv)
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{
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std::string string;
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*value = defaultv;
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if(!GetString(filename,section,key,string))
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return false;
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std::vector<std::string> split = explode(string, ",");
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for (std::vector<std::string>::iterator it = split.begin(); it != split.end(); it++) {
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TrimSpaces(*it);
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KeywordMap::iterator key = Keywords.find(*it);
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if (key != Keywords.end())
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*value |= key->second;
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}
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return true;
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}
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///////////////////
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// Read an interger from a file
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bool ReadInteger(const std::string& filename, const std::string& section, const std::string& key, int *value, int defaultv)
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{
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std::string string;
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*value = defaultv;
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if(!GetString(filename,section,key,string))
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return false;
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*value = from_string<int>(string);
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return true;
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}
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///////////////////
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// Read a string from a file
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bool ReadString(const std::string& filename, const std::string& section, const std::string& key, std::string& value, std::string defaultv, bool abs_fn)
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{
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value = defaultv;
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return GetString(filename,section,key,value, abs_fn);
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/*int result = GetString(filename,section,key,value);
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if (strlen(value) <= 0)
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strcpy(value,defaultv);
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return result;*/
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}
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///////////////////
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// Read a float from a file
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bool ReadFloat(const std::string& filename, const std::string& section, const std::string& key, float *value, float defaultv)
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{
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std::string string;
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*value = defaultv;
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if(!GetString(filename,section,key,string))
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return false;
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*value = (float)atof(string);
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return true;
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}
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bool ReadColour(const std::string& filename, const std::string& section, const std::string& key, Color& value, const Color& defaultv) {
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std::string string;
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value = defaultv;
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if(!GetString(filename,section,key,string))
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return false;
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value = StrToCol(string);
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return true;
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}
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//////////////////
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// Reads an array of integers
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bool ReadIntArray(const std::string& filename, const std::string& section, const std::string& key, int *array, int num_items)
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{
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std::string string;
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if (!GetString(filename,section,key,string))
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return false;
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std::vector<std::string> arr = explode(string,",");
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for (register int i=0; i<MIN(num_items,(int)arr.size()); i++)
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array[i] = from_string<int>(arr[i]);
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return num_items == (int)arr.size();
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}
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///////////////////
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// Read a string
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static bool GetString(const std::string& filename, const std::string& section, const std::string& key, std::string& string, bool abs_fn)
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{
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FILE *config = NULL;
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std::string Line;
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std::string tmpLine;
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std::string curSection;
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std::string temp;
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std::string curKey;
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size_t chardest = 0;
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int Position;
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bool found = false;
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if(filename == "")
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return false;
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if(abs_fn) {
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config = fopen(filename.c_str(), "rt");
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} else
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config = OpenGameFile(filename,"rt");
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if(!config)
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return false;
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//string="";
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curSection="";
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temp="";
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curKey="";
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// Check for UTF-8 encoded file and skip the UTF-8 mark if it is
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unsigned char utf8mark[3] = {0,0,0};
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if(fread(utf8mark, sizeof(utf8mark), 1, config) == 0) {
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fclose(config);
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return false;
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}
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if (utf8mark[0] != 0xEF || utf8mark[1] != 0xBB || utf8mark[2] != 0xBF)
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fseek(config, 0, SEEK_SET); // Not a UTF-8 file, jump back to the beginning
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while(!feof(config) && !ferror(config))
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{
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// Parse the lines
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Line = ReadUntil(config, '\n');
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TrimSpaces(Line);
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///////////////////
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// Comment, Ignore
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if(Line.size() == 0 || Line[0] == '#')
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continue;
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////////////
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// Sections
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if(Line[0] == '[' && Line[Line.size()-1] == ']')
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{
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curSection = Line.substr(1);
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curSection.erase(curSection.size()-1);
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continue;
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}
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////////
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// Keys
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chardest = Line.find('=');
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if(chardest != std::string::npos)
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{
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// Key
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Position = (int)chardest;
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tmpLine = Line;
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tmpLine.erase(Position);
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TrimSpaces(tmpLine);
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curKey = tmpLine;
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// Check if this is the key were looking for under the section were looking for
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if(stringcasecmp(curKey,key) == 0 && stringcasecmp(curSection,section) == 0)
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{
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// Get the value
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tmpLine = Line.substr(Position+1);
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TrimSpaces(tmpLine);
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string = tmpLine;
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found = true;
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break;
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}
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continue;
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}
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}
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fclose(config);
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return found;
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}
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100
src/ConfigHandler.h
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100
src/ConfigHandler.h
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@@ -0,0 +1,100 @@
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/////////////////////////////////////////
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//
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// OpenLieroX
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//
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// Auxiliary Software class library
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//
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// based on the work of JasonB
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// enhanced by Dark Charlie and Albert Zeyer
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//
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// code under LGPL
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//
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/////////////////////////////////////////
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// Config file handler
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// Created 30/9/01
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// By Jason Boettcher
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#ifndef __CONFIGHANDLER_H__
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#define __CONFIGHANDLER_H__
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#include "CVec.h"
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#include "StringUtils.h"
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#include "MathLib.h"
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#include <string>
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#include <SDL.h>
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#include <vector>
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#define MAX_STRING_LENGTH 4096
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#define MAX_MINOR_LENGTH 256
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#define MAX_KEYWORDS 256
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// Value reading
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bool ReadString(const std::string& filename, const std::string& section, const std::string& key, std::string& value, std::string defaultv, bool abs_fn = false);
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bool ReadInteger(const std::string& filename, const std::string& section, const std::string& key, int *value, int defaultv);
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bool ReadFloat(const std::string& filename, const std::string& section, const std::string& key, float *value, float defaultv);
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bool ReadIntArray(const std::string& filename, const std::string& section, const std::string& key, int *array, int num_items);
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struct Color;
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bool ReadColour(const std::string& filename, const std::string& section, const std::string& key, Color& value, const Color& defaultv);
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template<typename T>
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bool ReadArray(const std::string& filename, const std::string& section, const std::string& key, T* data, size_t num) {
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std::string string;
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if (!ReadString(filename,section,key,string,""))
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return false;
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std::vector<std::string> arr = explode(string,",");
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for (size_t i=0; i< MIN(num,arr.size()); i++)
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data[i] = from_string<T>(arr[i]);
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return num == arr.size();
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}
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template<typename T>
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bool ReadVectorD2(const std::string& filename, const std::string& section, const std::string& key, VectorD2<T>& v, VectorD2<T> defv = VectorD2<T>()) {
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v = defv;
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T _v[2] = {0,0};
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if(!ReadArray(filename, section, key, _v, 2)) return false;
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v.x = _v[0]; v.y = _v[1];
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return true;
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}
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template<typename T>
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bool ReadMatrixD2(const std::string& filename, const std::string& section, const std::string& key, MatrixD2<T>& v, MatrixD2<T> defv = MatrixD2<T>()) {
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v = defv;
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T _v[4] = {0,0,0,0};
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if(!ReadArray(filename, section, key, _v, 4)) return false;
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v.v1.x = _v[0]; v.v1.y = _v[1]; v.v2.x = _v[2]; v.v2.y = _v[3];
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return true;
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}
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bool AddKeyword(const std::string& key, int value);
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bool ReadKeyword(const std::string& filename, const std::string& section, const std::string& key, int *value, int defaultv);
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bool ReadKeyword(const std::string& filename, const std::string& section, const std::string& key, bool *value, bool defaultv);
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bool ReadKeywordList(const std::string& filename, const std::string& section, const std::string& key, int *value, int defaultv);
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#endif // __CONFIGHANDLER_H__
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