base/inifile.cc - arm/gem5 - Git at Google

 /*
  * Copyright (c) 2003 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met: redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer;
  * redistributions in binary form must reproduce the above copyright
  * notice, this list of conditions and the following disclaimer in the
  * documentation and/or other materials provided with the distribution;
  * neither the name of the copyright holders nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */

 #define USE_CPP
 // #define CPP_PIPE


 #ifdef USE_CPP
 #include <sys/signal.h>
 #include <sys/types.h>
 #include <sys/wait.h>

 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #endif

 #include <fstream>
 #include <iostream>
 #if __GNUC__ >= 3
 #include <ext/stdio_filebuf.h>
 #endif

 #include <vector>
 #include <string>

 #include "base/inifile.hh"
 #include "base/str.hh"

 using namespace std;

 IniFile::IniFile()
 {}

 IniFile::~IniFile()
 {
     ConfigTable::iterator i = table.begin();
     ConfigTable::iterator end = table.end();

     while (i != end) {
         delete (*i).second;
         ++i;
     }
 }


 #ifdef USE_CPP
 bool
 IniFile::loadCPP(const string &file, vector<char *> &cppArgs)
 {
     int fd[2];

 #ifdef CPP_PIPE
     if (pipe(fd) == -1)
         return false;
 #else
     char tempfile[] = "/tmp/configXXXXXX";
     fd[0] = fd[1] = mkstemp(tempfile);
 #endif

     int pid = fork();

     if (pid == -1)
         return 1;

     if (pid == 0) {
         char filename[FILENAME_MAX];
         string::size_type i = file.copy(filename, sizeof(filename) - 1);
         filename[i] = '\0';

         int arg_count = cppArgs.size();

         char **args = new char *[arg_count + 20];

         int nextArg = 0;
         args[nextArg++] = "g++";
         args[nextArg++] = "-E";
         args[nextArg++] = "-P";
         args[nextArg++] = "-nostdinc";
         args[nextArg++] = "-nostdinc++";
         args[nextArg++] = "-x";
         args[nextArg++] = "c++";
         args[nextArg++] = "-undef";

         for (int i = 0; i < arg_count; i++)
             args[nextArg++] = cppArgs[i];

         args[nextArg++] = filename;
         args[nextArg++] = NULL;

         close(STDOUT_FILENO);
         if (dup2(fd[1], STDOUT_FILENO) == -1)
             return 1;

         execvp("g++", args);

         exit(1);
     }

     int retval;
     waitpid(pid, &retval, 0);

     // check for normal completion of CPP
     if (!WIFEXITED(retval) || WEXITSTATUS(retval) != 0)
         return false;

 #ifdef CPP_PIPE
     close(fd[1]);
 #else
     lseek(fd[0], 0, SEEK_SET);
 #endif

     bool status = false;

 #if __GNUC__ >= 3
     using namespace __gnu_cxx;
     stdio_filebuf<char> fbuf(fd[0], ios_base::in, true,
         static_cast<stdio_filebuf<char>::int_type>(BUFSIZ));

     if (fbuf.is_open()) {
         istream f(&fbuf);
         status = load(f);
     }

 #else
     ifstream f(fd[0]);
     if (f.is_open())
         status = load(f);
 #endif

 #ifndef CPP_PIPE
     unlink(tempfile);
 #endif

     return status;
 }
 #endif

 bool
 IniFile::load(const string &file)
 {
     ifstream f(file.c_str());

     if (!f.is_open())
         return false;

     return load(f);
 }


 const string &
 IniFile::Entry::getValue() const
 {
     referenced = true;
     return value;
 }


 void
 IniFile::Section::addEntry(const std::string &entryName,
                            const std::string &value)
 {
     EntryTable::iterator ei = table.find(entryName);

     if (ei == table.end()) {
         // new entry
         table[entryName] = new Entry(value);
     }
     else {
         // override old entry
         ei->second->setValue(value);
     }
 }


 IniFile::Entry *
 IniFile::Section::findEntry(const std::string &entryName) const
 {
     referenced = true;

     EntryTable::const_iterator ei = table.find(entryName);

     return (ei == table.end()) ? NULL : ei->second;
 }


 IniFile::Section *
 IniFile::addSection(const string &sectionName)
 {
     ConfigTable::iterator ci = table.find(sectionName);

     if (ci != table.end()) {
         return ci->second;
     }
     else {
         // new entry
         Section *sec = new Section();
         table[sectionName] = sec;
         return sec;
     }
 }


 IniFile::Section *
 IniFile::findSection(const string &sectionName) const
 {
     ConfigTable::const_iterator ci = table.find(sectionName);

     return (ci == table.end()) ? NULL : ci->second;
 }


 // Take string of the form "<section>:<parameter>=<value>" and add to
 // database.  Return true if successful, false if parse error.
 bool
 IniFile::add(const string &str)
 {
     // find ':'
     string::size_type offset = str.find(':');
     if (offset == string::npos)  // no ':' found
         return false;

     string sectionName = str.substr(0, offset);
     string rest = str.substr(offset + 1);

     offset = rest.find('=');
     if (offset == string::npos)  // no '='found
         return false;

     string entryName = rest.substr(0, offset);
     string value = rest.substr(offset + 1);

     eat_white(sectionName);
     eat_white(entryName);
     eat_white(value);

     Section *s = addSection(sectionName);
     s->addEntry(entryName, value);

     return true;
 }

 bool
 IniFile::load(istream &f)
 {
     Section *section = NULL;

     while (!f.eof()) {
         f >> ws; // Eat whitespace
         if (f.eof()) {
             break;
         }

         string line;
         getline(f, line);
         if (line.size() == 0)
             continue;

         eat_end_white(line);
         int last = line.size() - 1;

         if (line[0] == '[' && line[last] == ']') {
             string sectionName = line.substr(1, last - 1);
             eat_white(sectionName);
             section = addSection(sectionName);
             continue;
         }

         if (section == NULL)
             continue;

         string::size_type offset = line.find('=');
         string entryName = line.substr(0, offset);
         string value = line.substr(offset + 1);

         eat_white(entryName);
         eat_white(value);

         section->addEntry(entryName, value);
     }

     return true;
 }

 bool
 IniFile::find(const string &sectionName, const string &entryName,
               string &value) const
 {
     Section *section = findSection(sectionName);
     if (section == NULL)
         return false;

     Entry *entry = section->findEntry(entryName);
     if (entry == NULL)
         return false;

     value = entry->getValue();

     return true;
 }

 bool
 IniFile::findDefault(const string &_section, const string &entry,
                      string &value) const
 {
     string section = _section;
     while (!find(section, entry, value)) {
         if (!find(section, "default", section))
             return false;
     }

     return true;
 }


 bool
 IniFile::Section::printUnreferenced(const string &sectionName)
 {
     bool unref = false;
     bool search_unref_entries = false;
     vector<string> unref_ok_entries;

     Entry *entry = findEntry("unref_entries_ok");
     if (entry != NULL) {
         tokenize(unref_ok_entries, entry->getValue(), ' ');
         if (unref_ok_entries.size()) {
             search_unref_entries = true;
         }
     }

     for (EntryTable::iterator ei = table.begin();
          ei != table.end(); ++ei) {
         const string &entryName = ei->first;
         Entry *entry = ei->second;

         if (entryName == "unref_section_ok" ||
             entryName == "unref_entries_ok")
         {
             continue;
         }

         if (!entry->isReferenced()) {
             if (search_unref_entries &&
                 (std::find(unref_ok_entries.begin(), unref_ok_entries.end(),
                            entryName) != unref_ok_entries.end()))
             {
                 continue;
             }

             cerr << "Parameter " << sectionName << ":" << entryName
                  << " not referenced." << endl;
             unref = true;
         }
     }

     return unref;
 }


 bool
 IniFile::printUnreferenced()
 {
     bool unref = false;

     for (ConfigTable::iterator ci = table.begin();
          ci != table.end(); ++ci) {
         const string &sectionName = ci->first;
         Section *section = ci->second;

         if (!section->isReferenced()) {
             if (section->findEntry("unref_section_ok") == NULL) {
                 cerr << "Section " << sectionName << " not referenced."
                      << endl;
                 unref = true;
             }
         }
         else {
 #if 0
             if (section->findEntry("unref_entries_ok") == NULL) {
                 bool unrefEntries = section->printUnreferenced(sectionName);
                 unref = unref || unrefEntries;
             }
 #else
             if (section->printUnreferenced(sectionName)) {
                 unref = true;
             }
 #endif
         }
     }

     return unref;
 }


 void
 IniFile::Section::dump(const string &sectionName)
 {
     for (EntryTable::iterator ei = table.begin();
          ei != table.end(); ++ei) {
         cout << sectionName << ": " << (*ei).first << " => "
              << (*ei).second << "\n";
     }
 }

 void
 IniFile::dump()
 {
     for (ConfigTable::iterator ci = table.begin();
          ci != table.end(); ++ci) {
         ci->second->dump(ci->first);
     }
 }
	/*
	* Copyright (c) 2003 The Regents of The University of Michigan
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are
	* met: redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer;
	* redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution;
	* neither the name of the copyright holders nor the names of its
	* contributors may be used to endorse or promote products derived from
	* this software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#define USE_CPP
	// #define CPP_PIPE


	#ifdef USE_CPP
	#include <sys/signal.h>
	#include <sys/types.h>
	#include <sys/wait.h>

	#include <stdio.h>
	#include <stdlib.h>
	#include <unistd.h>
	#endif

	#include <fstream>
	#include <iostream>
	#if __GNUC__ >= 3
	#include <ext/stdio_filebuf.h>
	#endif

	#include <vector>
	#include <string>

	#include "base/inifile.hh"
	#include "base/str.hh"

	using namespace std;

	IniFile::IniFile()
	{}

	IniFile::~IniFile()
	{
	ConfigTable::iterator i = table.begin();
	ConfigTable::iterator end = table.end();

	while (i != end) {
	delete (*i).second;
	++i;
	}
	}


	#ifdef USE_CPP
	bool
	IniFile::loadCPP(const string &file, vector<char *> &cppArgs)
	{
	int fd[2];

	#ifdef CPP_PIPE
	if (pipe(fd) == -1)
	return false;
	#else
	char tempfile[] = "/tmp/configXXXXXX";
	fd[0] = fd[1] = mkstemp(tempfile);
	#endif

	int pid = fork();

	if (pid == -1)
	return 1;

	if (pid == 0) {
	char filename[FILENAME_MAX];
	string::size_type i = file.copy(filename, sizeof(filename) - 1);
	filename[i] = '\0';

	int arg_count = cppArgs.size();

	char *args = new char [arg_count + 20];

	int nextArg = 0;
	args[nextArg++] = "g++";
	args[nextArg++] = "-E";
	args[nextArg++] = "-P";
	args[nextArg++] = "-nostdinc";
	args[nextArg++] = "-nostdinc++";
	args[nextArg++] = "-x";
	args[nextArg++] = "c++";
	args[nextArg++] = "-undef";

	for (int i = 0; i < arg_count; i++)
	args[nextArg++] = cppArgs[i];

	args[nextArg++] = filename;
	args[nextArg++] = NULL;

	close(STDOUT_FILENO);
	if (dup2(fd[1], STDOUT_FILENO) == -1)
	return 1;

	execvp("g++", args);

	exit(1);
	}

	int retval;
	waitpid(pid, &retval, 0);

	// check for normal completion of CPP
	if (!WIFEXITED(retval) \|\| WEXITSTATUS(retval) != 0)
	return false;

	#ifdef CPP_PIPE
	close(fd[1]);
	#else
	lseek(fd[0], 0, SEEK_SET);
	#endif

	bool status = false;

	#if __GNUC__ >= 3
	using namespace __gnu_cxx;
	stdio_filebuf<char> fbuf(fd[0], ios_base::in, true,
	static_cast<stdio_filebuf<char>::int_type>(BUFSIZ));

	if (fbuf.is_open()) {
	istream f(&fbuf);
	status = load(f);
	}

	#else
	ifstream f(fd[0]);
	if (f.is_open())
	status = load(f);
	#endif

	#ifndef CPP_PIPE
	unlink(tempfile);
	#endif

	return status;
	}
	#endif

	bool
	IniFile::load(const string &file)
	{
	ifstream f(file.c_str());

	if (!f.is_open())
	return false;

	return load(f);
	}


	const string &
	IniFile::Entry::getValue() const
	{
	referenced = true;
	return value;
	}


	void
	IniFile::Section::addEntry(const std::string &entryName,
	const std::string &value)
	{
	EntryTable::iterator ei = table.find(entryName);

	if (ei == table.end()) {
	// new entry
	table[entryName] = new Entry(value);
	}
	else {
	// override old entry
	ei->second->setValue(value);
	}
	}


	IniFile::Entry *
	IniFile::Section::findEntry(const std::string &entryName) const
	{
	referenced = true;

	EntryTable::const_iterator ei = table.find(entryName);

	return (ei == table.end()) ? NULL : ei->second;
	}


	IniFile::Section *
	IniFile::addSection(const string &sectionName)
	{
	ConfigTable::iterator ci = table.find(sectionName);

	if (ci != table.end()) {
	return ci->second;
	}
	else {
	// new entry
	Section *sec = new Section();
	table[sectionName] = sec;
	return sec;
	}
	}


	IniFile::Section *
	IniFile::findSection(const string &sectionName) const
	{
	ConfigTable::const_iterator ci = table.find(sectionName);

	return (ci == table.end()) ? NULL : ci->second;
	}


	// Take string of the form "<section>:<parameter>=<value>" and add to
	// database. Return true if successful, false if parse error.
	bool
	IniFile::add(const string &str)
	{
	// find ':'
	string::size_type offset = str.find(':');
	if (offset == string::npos) // no ':' found
	return false;

	string sectionName = str.substr(0, offset);
	string rest = str.substr(offset + 1);

	offset = rest.find('=');
	if (offset == string::npos) // no '='found
	return false;

	string entryName = rest.substr(0, offset);
	string value = rest.substr(offset + 1);

	eat_white(sectionName);
	eat_white(entryName);
	eat_white(value);

	Section *s = addSection(sectionName);
	s->addEntry(entryName, value);

	return true;
	}

	bool
	IniFile::load(istream &f)
	{
	Section *section = NULL;

	while (!f.eof()) {
	f >> ws; // Eat whitespace
	if (f.eof()) {
	break;
	}

	string line;
	getline(f, line);
	if (line.size() == 0)
	continue;

	eat_end_white(line);
	int last = line.size() - 1;

	if (line[0] == '[' && line[last] == ']') {
	string sectionName = line.substr(1, last - 1);
	eat_white(sectionName);
	section = addSection(sectionName);
	continue;
	}

	if (section == NULL)
	continue;

	string::size_type offset = line.find('=');
	string entryName = line.substr(0, offset);
	string value = line.substr(offset + 1);

	eat_white(entryName);
	eat_white(value);

	section->addEntry(entryName, value);
	}

	return true;
	}

	bool
	IniFile::find(const string &sectionName, const string &entryName,
	string &value) const
	{
	Section *section = findSection(sectionName);
	if (section == NULL)
	return false;

	Entry *entry = section->findEntry(entryName);
	if (entry == NULL)
	return false;

	value = entry->getValue();

	return true;
	}

	bool
	IniFile::findDefault(const string &_section, const string &entry,
	string &value) const
	{
	string section = _section;
	while (!find(section, entry, value)) {
	if (!find(section, "default", section))
	return false;
	}

	return true;
	}


	bool
	IniFile::Section::printUnreferenced(const string &sectionName)
	{
	bool unref = false;
	bool search_unref_entries = false;
	vector<string> unref_ok_entries;

	Entry *entry = findEntry("unref_entries_ok");
	if (entry != NULL) {
	tokenize(unref_ok_entries, entry->getValue(), ' ');
	if (unref_ok_entries.size()) {
	search_unref_entries = true;
	}
	}

	for (EntryTable::iterator ei = table.begin();
	ei != table.end(); ++ei) {
	const string &entryName = ei->first;
	Entry *entry = ei->second;

	if (entryName == "unref_section_ok" \|\|
	entryName == "unref_entries_ok")
	{
	continue;
	}

	if (!entry->isReferenced()) {
	if (search_unref_entries &&
	(std::find(unref_ok_entries.begin(), unref_ok_entries.end(),
	entryName) != unref_ok_entries.end()))
	{
	continue;
	}

	cerr << "Parameter " << sectionName << ":" << entryName
	<< " not referenced." << endl;
	unref = true;
	}
	}

	return unref;
	}


	bool
	IniFile::printUnreferenced()
	{
	bool unref = false;

	for (ConfigTable::iterator ci = table.begin();
	ci != table.end(); ++ci) {
	const string &sectionName = ci->first;
	Section *section = ci->second;

	if (!section->isReferenced()) {
	if (section->findEntry("unref_section_ok") == NULL) {
	cerr << "Section " << sectionName << " not referenced."
	<< endl;
	unref = true;
	}
	}
	else {
	#if 0
	if (section->findEntry("unref_entries_ok") == NULL) {
	bool unrefEntries = section->printUnreferenced(sectionName);
	unref = unref \|\| unrefEntries;
	}
	#else
	if (section->printUnreferenced(sectionName)) {
	unref = true;
	}
	#endif
	}
	}

	return unref;
	}


	void
	IniFile::Section::dump(const string &sectionName)
	{
	for (EntryTable::iterator ei = table.begin();
	ei != table.end(); ++ei) {
	cout << sectionName << ": " << (*ei).first << " => "
	<< (*ei).second << "\n";
	}
	}

	void
	IniFile::dump()
	{
	for (ConfigTable::iterator ci = table.begin();
	ci != table.end(); ++ci) {
	ci->second->dump(ci->first);
	}
	}