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-rw-r--r--src/configfile.cc347
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * configfile.cc
+ *
+ * Thu May 14 14:51:39 CEST 2015
+ * Copyright 2015 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * DrumGizmo 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 for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#include "configfile.h"
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#ifdef WIN32
+#include <direct.h>
+#include <windows.h>
+#include <Shlobj.h>
+#include <Shlwapi.h>
+#else
+#endif
+
+#include <hugin.hpp>
+
+#ifdef WIN32
+ #define SEP "\\"
+#else
+ #define SEP "/"
+#endif
+
+#define CONFIGDIRNAME ".drumgizmo"
+
+/**
+ * Return the path containing the config files.
+ */
+static std::string configPath()
+{
+#ifdef WIN32
+ std::string configpath;
+ TCHAR szPath[256];
+ if(SUCCEEDED(SHGetFolderPath(NULL, CSIDL_APPDATA | CSIDL_FLAG_CREATE,
+ NULL, 0, szPath))) {
+ configpath = szPath;
+ }
+#else
+ std::string configpath = strdup(getenv("HOME"));
+#endif
+ configpath += SEP;
+ configpath += CONFIGDIRNAME;
+
+ return configpath;
+}
+
+/**
+ * Calling this makes sure that the config path exists
+ */
+static bool createConfigPath()
+{
+ std::string configpath = configPath();
+
+ struct stat st;
+ if(stat(configpath.c_str(), &st) == 0) {
+ DEBUG(configfile, "No configuration exists, creating directory '%s'\n",
+ configpath.c_str());
+#ifdef WIN32
+ if(mkdir(configpath.c_str()) < 0) {
+#else
+ if(mkdir(configpath.c_str(), 0755) < 0) {
+#endif
+ DEBUG(configfile, "Could not create config directory\n");
+ }
+
+ return false;
+ }
+
+ return true;
+}
+
+ConfigFile::ConfigFile(std::string filename)
+ : filename(filename)
+ , fp(NULL)
+{
+}
+
+ConfigFile::~ConfigFile()
+{
+}
+
+bool ConfigFile::load()
+{
+ DEBUG(configfile, "Loading config file...\n");
+ if(!open("r")) {
+ return false;
+ }
+
+ values.clear();
+
+ std::string line;
+ while(true) {
+ line = readLine();
+
+ if(line == "") break;
+
+ if(!parseLine(line)) {
+ return false;
+ }
+ }
+
+ close();
+
+ return true;
+}
+
+bool ConfigFile::save()
+{
+ DEBUG(configfile, "Saving configuration...\n");
+
+ createConfigPath();
+
+ if(!open("w")) {
+ return false;
+ }
+
+ std::map<std::string, std::string>::iterator v = values.begin();
+ for(; v != values.end(); ++v) {
+ fprintf(fp, "%s:%s\n", v->first.c_str(), v->second.c_str());
+ }
+
+ close();
+
+ return true;
+}
+
+std::string ConfigFile::getValue(const std::string& key)
+{
+ if(values.find(key) != values.end()) {
+ return values[key];
+ }
+
+ return "";
+}
+
+void ConfigFile::setValue(const std::string& key, const std::string& value)
+{
+ values[key] = value;
+}
+
+bool ConfigFile::open(std::string mode)
+{
+ if(fp) close();
+
+ std::string configpath = configPath();
+
+ std::string configfile = configpath;
+ configfile += SEP;
+ configfile += filename;
+
+ DEBUG(configfile, "Opening config file '%s'\n", configfile.c_str());
+ fp = fopen(configfile.c_str(), mode.c_str());
+
+ if(!fp) return false;
+
+ return true;
+}
+
+void ConfigFile::close()
+{
+ fclose(fp);
+ fp = NULL;
+}
+
+std::string ConfigFile::readLine()
+{
+ if(!fp) return "";
+
+ std::string line;
+
+ char buf[1024];
+ while(!feof(fp)) {
+ char *s = fgets(buf, sizeof(buf), fp);
+ if(s) {
+ line += buf;
+ if(buf[strlen(buf) - 1] == '\n') break;
+ }
+ }
+
+ return line;
+}
+
+bool ConfigFile::parseLine(const std::string& line)
+{
+ std::string key;
+ std::string value;
+ enum {
+ before_key,
+ in_key,
+ after_key,
+ before_value,
+ in_value,
+ in_value_single_quoted,
+ in_value_double_quoted,
+ after_value,
+ } state = before_key;
+
+ for(std::size_t p = 0; p < line.size(); ++p) {
+ switch(state) {
+ case before_key:
+ if(line[p] == '#') {
+ // Comment: Ignore line.
+ p = line.size();
+ continue;
+ }
+ if(std::isspace(line[p])) {
+ continue;
+ }
+ key += line[p];
+ state = in_key;
+ break;
+
+ case in_key:
+ if(std::isspace(line[p])) {
+ state = after_key;
+ continue;
+ }
+ if(line[p] == ':' || line[p] == '=') {
+ state = before_value;
+ continue;
+ }
+ key += line[p];
+ break;
+
+ case after_key:
+ if(std::isspace(line[p])) {
+ continue;
+ }
+ if(line[p] == ':' || line[p] == '=') {
+ state = before_value;
+ continue;
+ }
+ ERR(configfile, "Bad symbol."
+ " Expecting only whitespace or key/value seperator: '%s'",
+ line.c_str());
+ return false;
+
+ case before_value:
+ if(std::isspace(line[p])) {
+ continue;
+ }
+ if(line[p] == '\'') {
+ state = in_value_single_quoted;
+ continue;
+ }
+ if(line[p] == '"') {
+ state = in_value_double_quoted;
+ continue;
+ }
+ value += line[p];
+ state = in_value;
+ break;
+
+ case in_value:
+ if(std::isspace(line[p])) {
+ state = after_value;
+ continue;
+ }
+ if(line[p] == '#') {
+ // Comment: Ignore the rest of the line.
+ p = line.size();
+ state = after_value;
+ continue;
+ }
+ value += line[p];
+ break;
+
+ case in_value_single_quoted:
+ if(line[p] == '\'') {
+ state = after_value;
+ continue;
+ }
+ value += line[p];
+ break;
+
+ case in_value_double_quoted:
+ if(line[p] == '"') {
+ state = after_value;
+ continue;
+ }
+ value += line[p];
+ break;
+
+ case after_value:
+ if(std::isspace(line[p])) {
+ continue;
+ }
+ if(line[p] == '#') {
+ // Comment: Ignore the rest of the line.
+ p = line.size();
+ continue;
+ }
+ ERR(configfile, "Bad symbol."
+ " Expecting only whitespace or key/value seperator: '%s'",
+ line.c_str());
+ return false;
+ }
+ }
+
+ if(state == before_key) {
+ // Line did not contain any data (empty or comment)
+ return true;
+ }
+
+ // If state == in_value_XXX_quoted here, the string was not terminated.
+ if(state != after_value && state != in_value) {
+ ERR(configfile,"Malformed line: '%s'", line.c_str());
+ return false;
+ }
+
+ DEBUG(configfile, "key['%s'] value['%s']\n", key.c_str(), value.c_str());
+
+ if(key != "") {
+ values[key] = value;
+ }
+
+ return true;
+}