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/*=========================================================================
Program: CMake - Cross-Platform Makefile Generator
Module: $RCSfile$
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "cmListFileCache.h"
#include "cmListFileLexer.h"
#include "cmSystemTools.h"
#include <cmsys/RegularExpression.hxx>
bool cmListFileCacheParseFunction(cmListFileLexer* lexer,
cmListFileFunction& function,
const char* filename);
bool cmListFile::ParseFile(const char* filename, bool requireProjectCommand)
{
if(!cmSystemTools::FileExists(filename))
{
return false;
}
// Create the scanner.
cmListFileLexer* lexer = cmListFileLexer_New();
if(!lexer)
{
cmSystemTools::Error("cmListFileCache: error allocating lexer ");
return false;
}
// Open the file.
if(!cmListFileLexer_SetFileName(lexer, filename))
{
cmListFileLexer_Delete(lexer);
cmSystemTools::Error("cmListFileCache: error can not open file ", filename);
return false;
}
// Use a simple recursive-descent parser to process the token
// stream.
this->m_ModifiedTime = cmSystemTools::ModifiedTime(filename);
bool parseError = false;
bool haveNewline = true;
cmListFileLexer_Token* token;
while(!parseError && (token = cmListFileLexer_Scan(lexer)))
{
if(token->type == cmListFileLexer_Token_Newline)
{
haveNewline = true;
}
else if(token->type == cmListFileLexer_Token_Identifier)
{
if(haveNewline)
{
haveNewline = false;
cmListFileFunction inFunction;
inFunction.m_Name = token->text;
inFunction.m_FilePath = filename;
inFunction.m_Line = token->line;
if(cmListFileCacheParseFunction(lexer, inFunction, filename))
{
this->m_Functions.push_back(inFunction);
}
else
{
parseError = true;
}
}
else
{
cmOStringStream error;
error << "Error in cmake code at\n"
<< filename << ":" << token->line << ":\n"
<< "Parse error. Expected a newline, got "
<< cmListFileLexer_GetTypeAsString(lexer, token->type)
<< " with text \"" << token->text << "\".";
cmSystemTools::Error(error.str().c_str());
parseError = true;
}
}
else
{
cmOStringStream error;
error << "Error in cmake code at\n"
<< filename << ":" << token->line << ":\n"
<< "Parse error. Expected a command name, got "
<< cmListFileLexer_GetTypeAsString(lexer, token->type)
<< " with text \""
<< token->text << "\".";
cmSystemTools::Error(error.str().c_str());
parseError = true;
}
}
if (parseError)
{
this->m_ModifiedTime = 0;
}
cmListFileLexer_Delete(lexer);
if(requireProjectCommand)
{
bool hasProject = false;
// search for a project command
for(std::vector<cmListFileFunction>::iterator i
= this->m_Functions.begin();
i != this->m_Functions.end(); ++i)
{
if(cmSystemTools::LowerCase(i->m_Name) == "project")
{
hasProject = true;
break;
}
}
// if no project command is found, add one
if(!hasProject)
{
cmListFileFunction project;
project.m_Name = "PROJECT";
cmListFileArgument prj("Project", false, filename, 0);
project.m_Arguments.push_back(prj);
this->m_Functions.insert(this->m_Functions.begin(),project);
}
}
return true;
}
bool cmListFileCacheParseFunction(cmListFileLexer* lexer,
cmListFileFunction& function,
const char* filename)
{
// Command name has already been parsed. Read the left paren.
cmListFileLexer_Token* token;
if(!(token = cmListFileLexer_Scan(lexer)))
{
cmOStringStream error;
error << "Error in cmake code at\n"
<< filename << ":" << cmListFileLexer_GetCurrentLine(lexer) << ":\n"
<< "Parse error. Function missing opening \"(\".";
cmSystemTools::Error(error.str().c_str());
return false;
}
if(token->type != cmListFileLexer_Token_ParenLeft)
{
cmOStringStream error;
error << "Error in cmake code at\n"
<< filename << ":" << cmListFileLexer_GetCurrentLine(lexer) << ":\n"
<< "Parse error. Expected \"(\", got "
<< cmListFileLexer_GetTypeAsString(lexer, token->type)
<< " with text \"" << token->text << "\".";
cmSystemTools::Error(error.str().c_str());
return false;
}
// Arguments.
unsigned long lastLine = cmListFileLexer_GetCurrentLine(lexer);
while((token = cmListFileLexer_Scan(lexer)))
{
if(token->type == cmListFileLexer_Token_ParenRight)
{
return true;
}
else if(token->type == cmListFileLexer_Token_Identifier ||
token->type == cmListFileLexer_Token_ArgumentUnquoted)
{
cmListFileArgument a(token->text,
false, filename, token->line);
function.m_Arguments.push_back(a);
}
else if(token->type == cmListFileLexer_Token_ArgumentQuoted)
{
cmListFileArgument a(token->text,
true, filename, token->line);
function.m_Arguments.push_back(a);
}
else if(token->type != cmListFileLexer_Token_Newline)
{
// Error.
cmOStringStream error;
error << "Error in cmake code at\n"
<< filename << ":" << cmListFileLexer_GetCurrentLine(lexer) << ":\n"
<< "Parse error. Function missing ending \")\". "
<< "Instead found "
<< cmListFileLexer_GetTypeAsString(lexer, token->type)
<< " with text \"" << token->text << "\".";
cmSystemTools::Error(error.str().c_str());
return false;
}
lastLine = cmListFileLexer_GetCurrentLine(lexer);
}
cmOStringStream error;
error << "Error in cmake code at\n"
<< filename << ":" << lastLine << ":\n"
<< "Parse error. Function missing ending \")\". "
<< "End of file reached.";
cmSystemTools::Error(error.str().c_str());
return false;
}
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