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dpavlin |
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/* |
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* PearPC |
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* configparser.cc |
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* |
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* Copyright (C) 2003 Sebastian Biallas (sb@biallas.net) |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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#include <ctype.h> |
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#include "configparser.h" |
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#include "tools/except.h" |
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#include "tools/snprintf.h" |
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ConfigParser *gConfig; |
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ConfigEntry::ConfigEntry(const String &aName, bool mandatory) |
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{ |
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mName = new String(aName); |
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mMandatory = mandatory; |
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mInitialized = false; |
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mSet = false; |
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} |
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ConfigEntry::~ConfigEntry() |
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{ |
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delete mName; |
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} |
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ConfigType ConfigEntry::getType() const |
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{ |
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throw Exception(); |
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} |
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int ConfigEntry::asInt() const |
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{ |
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throw MsgfException("cannot interprete config entry %y as integer", mName); |
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} |
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String &ConfigEntry::asString(String &result) const |
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{ |
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throw MsgfException("cannot interprete config entry %y as string", mName); |
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} |
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int ConfigEntry::compareTo(const Object *obj) const |
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{ |
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return mName->compareTo(((ConfigEntry *)obj)->mName); |
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} |
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bool ConfigEntry::isSet() const |
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{ |
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return mSet; |
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} |
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bool ConfigEntry::isInitialized() const |
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{ |
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return mInitialized; |
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} |
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class ConfigEntryInt: public ConfigEntry { |
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int value; |
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public: |
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ConfigEntryInt(const String &aName, bool mandatory) |
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:ConfigEntry(aName, mandatory) |
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{ |
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} |
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ConfigEntryInt(const String &aName, int defaultvalue, int scheiss_c_plus_plus) |
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:ConfigEntry(aName, false) |
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{ |
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value = defaultvalue; |
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mInitialized = true; |
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} |
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virtual ConfigType getType() const |
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{ |
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return configTypeInt; |
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} |
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void set(int v) |
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{ |
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value = v; |
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mInitialized = true; |
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mSet = true; |
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} |
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virtual int asInt() const |
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{ |
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return value; |
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} |
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}; |
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class ConfigEntryString: public ConfigEntry { |
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String *value; |
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public: |
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ConfigEntryString(const String &aName, bool mandatory) |
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:ConfigEntry(aName, mandatory) |
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{ |
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value = new String; |
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} |
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ConfigEntryString(const String &aName, const String &defaultvalue) |
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:ConfigEntry(aName, false) |
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{ |
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value = new String(defaultvalue); |
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mInitialized = true; |
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} |
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virtual ConfigType getType() const |
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{ |
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return configTypeString; |
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} |
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void set(const String &s) |
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{ |
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*value = s; |
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mInitialized = true; |
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mSet = true; |
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} |
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virtual String &asString(String &result) const |
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{ |
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result = *value; |
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return result; |
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} |
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}; |
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ConfigParser::ConfigParser() |
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{ |
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entries = new AVLTree(true); |
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} |
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ConfigParser::~ConfigParser() |
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{ |
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delete entries; |
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} |
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void ConfigParser::acceptConfigEntryInt(const String &mName, bool mandatory) |
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{ |
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ConfigEntry *entry = new ConfigEntryInt(mName, mandatory); |
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if (!entries->insert(entry)) throw MsgfException("duplicate config entry '%y'", &mName); |
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} |
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void ConfigParser::acceptConfigEntryString(const String &mName, bool mandatory) |
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{ |
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ConfigEntry *entry = new ConfigEntryString(mName, mandatory); |
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if (!entries->insert(entry)) throw MsgfException("duplicate config entry '%y'", &mName); |
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} |
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void ConfigParser::acceptConfigEntryIntDef(const String &mName, int d) |
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{ |
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ConfigEntry *entry = new ConfigEntryInt(mName, d, 0); |
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if (!entries->insert(entry)) throw MsgfException("duplicate config entry '%y'", &mName); |
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} |
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void ConfigParser::acceptConfigEntryStringDef(const String &mName, const String &d) |
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{ |
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ConfigEntry *entry = new ConfigEntryString(mName, d); |
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if (!entries->insert(entry)) throw MsgfException("duplicate config entry '%y'", &mName); |
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} |
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bool ConfigParser::skipWhite(Stream &in) |
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{ |
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while (cur == ' ' || cur == '\t' || cur == '\r') { |
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if (!in.read(&cur, 1)) return false; |
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} |
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return true; |
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} |
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#define INV 0xff |
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byte mapchar[]={ |
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' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', 10,' ',' ',' ',' ',' ', // 0-15 |
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' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ', // 16-31 |
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' ','!','"','#','$','%','&', 39,'(',')','*','+',',','-','.','/', // 32-47 |
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'0','0','0','0','0','0','0','0','0','0',':',';','<','=','>','?', // 48-63 |
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'@','A','A','A','A','A','A','A','A','A','A','A','A','A','A','A', // 64-79 |
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'A','A','A','A','A','A','A','A','A','A','A','[', 92,']','^','_', // 80-95 |
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INV,'A','A','A','A','A','A','A','A','A','A','A','A','A','A','A', // 96-111 |
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'A','A','A','A','A','A','A','A','A','A','A','{','|','}','~',INV, // 112-127 |
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INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV, |
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INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV, |
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INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV, |
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INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV, |
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INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV, |
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INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV, |
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INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV, |
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INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV,INV |
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}; |
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void ConfigParser::loadConfig(Stream &in) |
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{ |
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read(in); |
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foreach(ConfigEntry, e, *entries, { |
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if (e->mMandatory && !e->isInitialized()) { |
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throw MsgfException("config entry '%y' is not set.", e->mName); |
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} |
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}); |
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} |
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void ConfigParser::read(Stream &in) |
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{ |
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if (!in.read(&cur, 1)) return; |
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line = 1; |
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while (true) { |
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if (!skipWhite(in)) return; |
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if (cur == '#') { |
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// skip comment |
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do { |
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if (!in.read(&cur, 1)) return; |
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} while (cur != '\n'); |
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if (!in.read(&cur, 1)) return; |
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line++; |
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continue; |
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} |
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if (cur == '\r') { |
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if (!in.read(&cur, 1)) return; |
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continue; |
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} |
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if (cur == '\n') { |
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if (!in.read(&cur, 1)) return; |
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line++; |
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continue; |
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} |
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byte m = mapchar[cur]; |
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String ident; |
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if (m != 'A' && m != '_') throw MsgfException("invalid character '%c' (%02x) in line %d.", cur, cur, line); |
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do { |
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ident += cur; |
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if (!in.read(&cur, 1)) throw MsgfException("syntax error in line %d.", line); |
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m = mapchar[cur]; |
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} while (m == 'A' || m == '0' || m == '_'); |
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ConfigEntry *e = getEntry(ident); |
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if (!e) throw MsgfException("unknown identifier '%y' in line %d.", &ident, line); |
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if (e->isSet()) throw MsgfException("config entry '%y' is already set in line %d.", e->mName, line); |
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if (!skipWhite(in)) throw MsgfException("%s expected in line %d.", "'='", line); |
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if (cur != '=') throw MsgfException("%s expected in line %d.", "'='", line); |
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if (!in.read(&cur, 1) || !skipWhite(in)) throw MsgfException("syntax error in line %d.", line); |
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m = mapchar[cur]; |
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if (e->getType() == configTypeInt) { |
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if (m != '0') throw MsgfException("%s expected in line %d.", "integer", line); |
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String n; |
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do { |
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n += cur; |
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if (!in.read(&cur, 1)) cur = ' '; |
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m = mapchar[cur]; |
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} while (m == '0' || m == 'A'); |
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if (cur == '\n' || cur == '\r' || cur == ' ' || cur == '\t' || cur == '#') { |
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// nothing to do |
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} else { |
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cur = tolower(cur); |
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if (cur == 'h' || cur == 'o' || cur == 'b' || cur == 'd') { |
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n += cur; |
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if (!in.read(&cur, 1)) cur = ' '; |
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} else { |
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throw MsgfException("%s expected in line %d.", "integer", line); |
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} |
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} |
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uint64 u; |
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if (!n.toInt64(u)) throw MsgfException("%s expected in line %d.", "integer", line); |
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((ConfigEntryInt *)e)->set(u); |
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} else { |
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if (m != '"') throw MsgfException("%s expected in line %d.", "'\"'", line); |
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String s; |
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int oldline = line; |
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do { |
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s += cur; |
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if (!in.read(&cur, 1)) throw MsgfException("unterminated string in line %d (starts in line %d).", line, oldline); |
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m = mapchar[cur]; |
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if (m == '\n') line++; |
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} while (m != '"'); |
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s.del(0, 1); |
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((ConfigEntryString *)e)->set(s); |
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if (!in.read(&cur, 1)) cur = ' '; |
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} |
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if (!skipWhite(in)) return; |
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if (cur == '#') continue; |
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if (cur != '\n') throw MsgfException("syntax error in line %d.", line); |
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} |
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} |
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ConfigEntry *ConfigParser::getEntry(const String &name) |
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{ |
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ConfigEntry empty(name, false); |
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return (ConfigEntry *)entries->get(entries->find(&empty)); |
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} |
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int ConfigParser::getConfigInt(const String &name) |
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{ |
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ConfigEntry empty(name, false); |
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ConfigEntry *entry = (ConfigEntry *)entries->get(entries->find(&empty)); |
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if (!entry) throw MsgfException("unknown entry '%y'", &name); |
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if (!entry->isInitialized()) throw MsgfException("%y is not set!", &name); |
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return entry->asInt(); |
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} |
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String &ConfigParser::getConfigString(const String &name, String &result) |
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{ |
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ConfigEntry empty(name, false); |
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ConfigEntry *entry = (ConfigEntry *)entries->get(entries->find(&empty)); |
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if (!entry) throw MsgfException("unknown entry '%y'", &name); |
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if (!entry->isInitialized()) throw MsgfException("%y is not set!", &name); |
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return entry->asString(result); |
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} |
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bool ConfigParser::haveKey(const String &name) |
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{ |
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ConfigEntry empty(name, false); |
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ConfigEntry *entry = (ConfigEntry *)entries->get(entries->find(&empty)); |
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return entry && entry->isSet(); |
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} |
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