444 lines
12 KiB
C++
444 lines
12 KiB
C++
/*=========================================================================
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Program: CMake - Cross-Platform Makefile Generator
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Module: $RCSfile$
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Language: C++
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Date: $Date$
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Version: $Revision$
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Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
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See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notices for more information.
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=========================================================================*/
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#include "cmStringCommand.h"
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#include <cmsys/RegularExpression.hxx>
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#include <stdlib.h> // required for atoi
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#include <ctype.h>
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//----------------------------------------------------------------------------
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bool cmStringCommand::InitialPass(std::vector<std::string> const& args)
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{
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if(args.size() < 1)
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{
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this->SetError("must be called with at least one argument.");
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return false;
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}
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std::string subCommand = args[0];
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if(subCommand == "REGEX")
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{
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return this->HandleRegexCommand(args);
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}
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else if(subCommand == "TOLOWER")
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{
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return this->HandleToUpperLowerCommand(args, false);
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}
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else if(subCommand == "TOUPPER")
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{
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return this->HandleToUpperLowerCommand(args, true);
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}
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else if(subCommand == "COMPARE")
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{
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return this->HandleCompareCommand(args);
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}
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else if(subCommand == "ASCII")
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{
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return this->HandleAsciiCommand(args);
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}
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std::string e = "does not recognize sub-command "+subCommand;
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this->SetError(e.c_str());
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return false;
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}
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//----------------------------------------------------------------------------
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bool cmStringCommand::HandleToUpperLowerCommand(
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std::vector<std::string> const& args, bool toUpper)
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{
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if ( args.size() <= 1 )
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{
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this->SetError("no output variable specified");
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return false;
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}
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std::string outvar = args[2];
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std::string output;
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if (toUpper)
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{
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output = cmSystemTools::UpperCase(args[1]);
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}
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else
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{
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output = cmSystemTools::LowerCase(args[1]);
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}
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// Store the output in the provided variable.
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m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
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return true;
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}
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//----------------------------------------------------------------------------
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bool cmStringCommand::HandleAsciiCommand(std::vector<std::string> const& args)
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{
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if ( args.size() <= 1 )
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{
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this->SetError("No output variable specified");
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return false;
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}
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std::string::size_type cc;
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std::string outvar = args[args.size()-1];
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std::string output = "";
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for ( cc = 1; cc < args.size()-1; cc ++ )
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{
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int ch = atoi(args[cc].c_str());
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if ( ch > 0 && ch < 256 )
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{
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output += static_cast<char>(ch);
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}
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else
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{
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std::string error = "Character with code ";
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error += ch;
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error += " does not exist.";
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this->SetError(error.c_str());
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return false;
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}
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}
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// Store the output in the provided variable.
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m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
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return true;
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}
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//----------------------------------------------------------------------------
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bool cmStringCommand::HandleRegexCommand(std::vector<std::string> const& args)
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{
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if(args.size() < 2)
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{
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this->SetError("sub-command REGEX requires a mode to be specified.");
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return false;
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}
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std::string mode = args[1];
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if(mode == "MATCH")
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{
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if(args.size() < 5)
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{
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this->SetError("sub-command REGEX, mode MATCH needs "
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"at least 5 arguments total to command.");
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return false;
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}
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return this->RegexMatch(args);
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}
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else if(mode == "MATCHALL")
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{
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if(args.size() < 5)
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{
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this->SetError("sub-command REGEX, mode MATCHALL needs "
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"at least 5 arguments total to command.");
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return false;
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}
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return this->RegexMatchAll(args);
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}
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else if(mode == "REPLACE")
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{
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if(args.size() < 6)
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{
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this->SetError("sub-command REGEX, mode MATCH needs "
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"at least 6 arguments total to command.");
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return false;
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}
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return this->RegexReplace(args);
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}
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std::string e = "sub-command REGEX does not recognize mode "+mode;
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this->SetError(e.c_str());
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return false;
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}
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//----------------------------------------------------------------------------
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bool cmStringCommand::RegexMatch(std::vector<std::string> const& args)
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{
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//"STRING(REGEX MATCH <regular_expression> <output variable> <input> [<input>...])\n";
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std::string regex = args[2];
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std::string outvar = args[3];
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// Concatenate all the last arguments together.
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std::string input = args[4];
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for(unsigned int i=5; i < args.size(); ++i)
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{
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input += args[i];
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}
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// Compile the regular expression.
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cmsys::RegularExpression re;
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if(!re.compile(regex.c_str()))
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{
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std::string e = "sub-command REGEX, mode MATCH failed to compile regex \""+regex+"\".";
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this->SetError(e.c_str());
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return false;
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}
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// Scan through the input for all matches.
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std::string output;
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if(re.find(input.c_str()))
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{
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std::string::size_type l = re.start();
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std::string::size_type r = re.end();
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if(r-l == 0)
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{
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std::string e = "sub-command REGEX, mode MATCH regex \""+regex+"\" matched an empty string.";
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this->SetError(e.c_str());
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return false;
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}
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output = input.substr(l, r-l);
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}
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// Store the output in the provided variable.
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m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
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return true;
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}
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//----------------------------------------------------------------------------
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bool cmStringCommand::RegexMatchAll(std::vector<std::string> const& args)
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{
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//"STRING(REGEX MATCHALL <regular_expression> <output variable> <input> [<input>...])\n";
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std::string regex = args[2];
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std::string outvar = args[3];
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// Concatenate all the last arguments together.
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std::string input = args[4];
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for(unsigned int i=5; i < args.size(); ++i)
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{
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input += args[i];
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}
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// Compile the regular expression.
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cmsys::RegularExpression re;
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if(!re.compile(regex.c_str()))
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{
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std::string e = "sub-command REGEX, mode MATCHALL failed to compile regex \""+regex+"\".";
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this->SetError(e.c_str());
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return false;
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}
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// Scan through the input for all matches.
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std::string output;
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const char* p = input.c_str();
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while(re.find(p))
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{
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std::string::size_type l = re.start();
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std::string::size_type r = re.end();
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if(r-l == 0)
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{
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std::string e = "sub-command REGEX, mode MATCHALL regex \""+regex+"\" matched an empty string.";
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this->SetError(e.c_str());
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return false;
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}
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if(output.length() > 0)
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{
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output += ";";
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}
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output += std::string(p+l, r-l);
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p += r;
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}
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// Store the output in the provided variable.
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m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
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return true;
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}
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//----------------------------------------------------------------------------
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bool cmStringCommand::RegexReplace(std::vector<std::string> const& args)
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{
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//"STRING(REGEX REPLACE <regular_expression> <replace_expression> <output variable> <input> [<input>...])\n"
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std::string regex = args[2];
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std::string replace = args[3];
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std::string outvar = args[4];
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// Pull apart the replace expression to find the escaped [0-9] values.
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std::vector<RegexReplacement> replacement;
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std::string::size_type l = 0;
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while(l < replace.length())
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{
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std::string::size_type r = replace.find("\\", l);
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if(r == std::string::npos)
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{
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r = replace.length();
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replacement.push_back(replace.substr(l, r-l));
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}
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else
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{
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if(r-l > 0)
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{
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replacement.push_back(replace.substr(l, r-l));
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}
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if(r == (replace.length()-1))
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{
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this->SetError("sub-command REGEX, mode REPLACE: "
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"replace-expression ends in a backslash.");
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return false;
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}
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if((replace[r+1] >= '0') && (replace[r+1] <= '9'))
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{
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replacement.push_back(replace[r+1]-'0');
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}
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else if(replace[r+1] == 'n')
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{
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replacement.push_back("\n");
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}
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else if(replace[r+1] == '\\')
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{
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replacement.push_back("\\");
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}
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else
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{
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std::string e = "sub-command REGEX, mode REPLACE: Unknown escape \"";
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e += replace.substr(r, 2);
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e += "\"in replace-expression.";
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this->SetError(e.c_str());
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return false;
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}
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r += 2;
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}
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l = r;
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}
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// Concatenate all the last arguments together.
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std::string input = args[5];
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for(unsigned int i=6; i < args.size(); ++i)
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{
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input += args[i];
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}
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// Compile the regular expression.
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cmsys::RegularExpression re;
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if(!re.compile(regex.c_str()))
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{
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std::string e = "sub-command REGEX, mode REPLACE failed to compile regex \""+regex+"\".";
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this->SetError(e.c_str());
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return false;
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}
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// Scan through the input for all matches.
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std::string output;
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std::string::size_type base = 0;
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while(re.find(input.c_str()+base))
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{
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std::string::size_type l2 = re.start();
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std::string::size_type r = re.end();
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// Concatenate the part of the input that was not matched.
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output += input.substr(base, l2);
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// Make sure the match had some text.
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if(r-l2 == 0)
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{
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std::string e = "sub-command REGEX, mode REPLACE regex \""+regex+"\" matched an empty string.";
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this->SetError(e.c_str());
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return false;
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}
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// Concatenate the replacement for the match.
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for(unsigned int i=0; i < replacement.size(); ++i)
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{
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if(replacement[i].number < 0)
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{
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// This is just a plain-text part of the replacement.
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output += replacement[i].value;
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}
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else
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{
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// Replace with part of the match.
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int n = replacement[i].number;
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std::string::size_type start = re.start(n);
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std::string::size_type end = re.end(n);
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std::string::size_type len = input.length()-base;
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if((start != std::string::npos) && (end != std::string::npos) &&
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(start <= len) && (end <= len))
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{
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output += input.substr(base+start, end-start);
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}
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else
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{
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std::string e =
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"sub-command REGEX, mode REPLACE: replace expression \""+
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replace+"\" contains an out-of-range escape for regex \""+
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regex+"\".";
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this->SetError(e.c_str());
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return false;
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}
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}
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}
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// Move past the match.
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base += r;
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}
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// Concatenate the text after the last match.
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output += input.substr(base, input.length()-base);
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// Store the output in the provided variable.
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m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
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return true;
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}
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//----------------------------------------------------------------------------
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bool cmStringCommand::HandleCompareCommand(std::vector<std::string> const& args)
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{
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if(args.size() < 2)
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{
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this->SetError("sub-command COMPARE requires a mode to be specified.");
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return false;
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}
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std::string mode = args[1];
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if((mode == "EQUAL") || (mode == "NOTEQUAL") ||
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(mode == "LESS") || (mode == "GREATER"))
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{
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if(args.size() < 5)
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{
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std::string e = "sub-command COMPARE, mode ";
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e += mode;
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e += " needs at least 5 arguments total to command.";
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this->SetError(e.c_str());
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return false;
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}
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const std::string& left = args[2];
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const std::string& right = args[3];
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const std::string& outvar = args[4];
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bool result;
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if(mode == "LESS")
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{
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result = (left < right);
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}
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else if(mode == "GREATER")
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{
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result = (left > right);
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}
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else if(mode == "EQUAL")
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{
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result = (left == right);
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}
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else // if(mode == "NOTEQUAL")
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{
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result = !(left == right);
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}
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if(result)
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{
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m_Makefile->AddDefinition(outvar.c_str(), "1");
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}
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else
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{
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m_Makefile->AddDefinition(outvar.c_str(), "0");
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}
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return true;
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}
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std::string e = "sub-command COMPARE does not recognize mode "+mode;
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this->SetError(e.c_str());
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return false;
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}
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