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/*
* settings.cpp
*
* Created on: Apr 18, 2009
* Author: Lorenzo Bettini <http://www.lorenzobettini.it>, (C) 2008
* Copyright: See COPYING file that comes with this distribution
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "settings.h"
#ifndef USE_MSVC
// msvc does not provide this header
#include <dirent.h>
#else
#include <io.h>
#include <direct.h>
#define mkdir(path,mode) _mkdir (path)
#include <compat_dirent.h>
#endif
#include <sys/stat.h>
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <boost/regex.hpp>
#include "fileutil.h"
#include "verbosity.h"
#ifdef USE_MINGW
// mingw's mkdir() function has 1 argument, but we pass 2 arguments.
// so we use its version _mkdir()
#undef mkdir
#define mkdir(path,mode) _mkdir (path)
#endif
using namespace std;
namespace srchilite {
/// if set (i.e., not empty), retrieveDataDir() always returns this value
string globalDataDir = "";
/// the regular expression for the conf file syntax
boost::regex
datadir_exp(
"[[:blank:]]*(datadir)[[:blank:]]*=[[:blank:]]*\"([^[:blank:]\\r]+)\"[[:blank:]\\r]*|([[:space:]]+)|([[:space:]]*#.*)");
#define DEFAULT_CONF_DIR ".source-highlight"
#define DEFAULT_CONF_FILE "source-highlight.conf"
static string findHomeDirectory() {
const char *home = getenv("HOME");
if (home) {
return home;
}
// let's try other variables in windows
char * homedrive = getenv("HOMEDRIVE"); // Drive containing Windows
char * homepath = getenv("HOMEPATH"); // Path to the user directory into the Windows drive
if (homedrive && homepath) {
return string(homedrive) + string(homepath);
}
// last chance in windows
home = getenv("USERPROFILE");
if (home) {
return home;
}
// nothing found...
return "";
}
Settings::Settings() :
confFileName(DEFAULT_CONF_FILE),
testFileName("lang.map"), dataDir(ABSOLUTEDATADIR) {
const string homeDir = findHomeDirectory();
confDir = (homeDir != "" ? homeDir + "/" + DEFAULT_CONF_DIR + "/" : string(
DEFAULT_CONF_DIR) + "/");
}
Settings::~Settings() {
}
bool Settings::checkForTestFile() {
string file = dataDir + "/" + testFileName;
ifstream i(file.c_str());
return (i != 0);
}
bool Settings::checkForConfFile() {
string file = confDir + confFileName;
ifstream i(file.c_str());
return (i != 0);
}
bool Settings::readDataDir() {
string file = confDir + confFileName;
ifstream i(file.c_str());
string line;
if (i != 0) {
while (read_line(&i, line)) {
if (line.size()) {
boost::cmatch what;
if (boost::regex_match(line.c_str(), what, datadir_exp)
&& what[2].matched) {// not all spaces, nor comments
dataDir = what[2];
return true;
}
}
}
}
return false;
}
SettingError Settings::save() {
// the directory does not exist?
if (opendir(confDir.c_str()) == 0) {
// then create it
if (mkdir(confDir.c_str(), S_IRWXU) != 0) {
return CANT_CREATE_DIR;
}
}
string file = confDir + confFileName;
ofstream o;
o.open(file.c_str());
if (o) {
o << "# settings for source-highlight" << endl;
o << endl;
o << "datadir = \"" << dataDir << "\"" << endl;
o.close();
return NO_SETTING_ERROR;
}
return CANT_CREATE_FILE;
}
const string Settings::retrieveDataDir(bool reload) {
if (globalDataDir != "")
return globalDataDir;
static string dataDir;
if (dataDir != "" && !reload)
return dataDir; // cached value
VERBOSELN("retrieving default datadir value...");
const char *_dataDir = getenv("SOURCE_HIGHLIGHT_DATADIR");
if (_dataDir) {
VERBOSELN("using SOURCE_HIGHLIGHT_DATADIR env value " + string(_dataDir));
dataDir = _dataDir;
return _dataDir;
}
static Settings settings;
if (!settings.readDataDir()) {
VERBOSELN("using hardcoded datadir value " ABSOLUTEDATADIR);
dataDir = ABSOLUTEDATADIR;
return ABSOLUTEDATADIR;
}
dataDir = settings.getDataDir();
VERBOSELN("using datadir value from conf file " + dataDir);
return dataDir;
}
const std::string Settings::getDefaultDataDir() {
return ABSOLUTEDATADIR;
}
void Settings::setGlobalDataDir(const std::string &dataDir) {
globalDataDir = dataDir;
}
bool Settings::checkSettings() {
static Settings settings;
settings.setDataDir(retrieveDataDir());
return settings.checkForTestFile();
}
}
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