CMake/Source/cmStringCommand.cxx

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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 "cmStringCommand.h"
#include <cmsys/RegularExpression.hxx>
#include <cmsys/SystemTools.hxx>
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#include <stdlib.h> // required for atoi
#include <ctype.h>
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//----------------------------------------------------------------------------
bool cmStringCommand::InitialPass(std::vector<std::string> const& args)
{
if(args.size() < 1)
{
this->SetError("must be called with at least one argument.");
return false;
}
const std::string &subCommand = args[0];
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if(subCommand == "REGEX")
{
return this->HandleRegexCommand(args);
}
else if(subCommand == "REPLACE")
{
return this->HandleReplaceCommand(args);
}
else if(subCommand == "TOLOWER")
{
return this->HandleToUpperLowerCommand(args, false);
}
else if(subCommand == "TOUPPER")
{
return this->HandleToUpperLowerCommand(args, true);
}
else if(subCommand == "COMPARE")
{
return this->HandleCompareCommand(args);
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}
else if(subCommand == "ASCII")
{
return this->HandleAsciiCommand(args);
}
else if(subCommand == "CONFIGURE")
{
return this->HandleConfigureCommand(args);
}
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else if(subCommand == "LENGTH")
{
return this->HandleLengthCommand(args);
}
else if(subCommand == "SUBSTRING")
{
return this->HandleSubstringCommand(args);
}
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std::string e = "does not recognize sub-command "+subCommand;
this->SetError(e.c_str());
return false;
}
//----------------------------------------------------------------------------
bool cmStringCommand::HandleToUpperLowerCommand(
std::vector<std::string> const& args, bool toUpper)
{
if ( args.size() < 3 )
{
this->SetError("no output variable specified");
return false;
}
std::string outvar = args[2];
std::string output;
if (toUpper)
{
output = cmSystemTools::UpperCase(args[1]);
}
else
{
output = cmSystemTools::LowerCase(args[1]);
}
// Store the output in the provided variable.
m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
return true;
}
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//----------------------------------------------------------------------------
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bool cmStringCommand::HandleAsciiCommand(std::vector<std::string> const& args)
{
if ( args.size() < 3 )
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{
this->SetError("No output variable specified");
return false;
}
std::string::size_type cc;
std::string outvar = args[args.size()-1];
std::string output = "";
for ( cc = 1; cc < args.size()-1; cc ++ )
{
int ch = atoi(args[cc].c_str());
if ( ch > 0 && ch < 256 )
{
output += static_cast<char>(ch);
}
else
{
std::string error = "Character with code ";
error += ch;
error += " does not exist.";
this->SetError(error.c_str());
return false;
}
}
// Store the output in the provided variable.
m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
return true;
}
//----------------------------------------------------------------------------
bool cmStringCommand::HandleConfigureCommand(
std::vector<std::string> const& args)
{
if ( args.size() < 2 )
{
this->SetError("No input string specified.");
return false;
}
else if ( args.size() < 3 )
{
this->SetError("No output variable specified.");
return false;
}
// Parse options.
bool escapeQuotes = false;
bool atOnly = false;
for(unsigned int i = 3; i < args.size(); ++i)
{
if(args[i] == "@ONLY")
{
atOnly = true;
}
else if(args[i] == "ESCAPE_QUOTES")
{
escapeQuotes = true;
}
else
{
cmOStringStream err;
err << "Unrecognized argument \"" << args[i] << "\"";
this->SetError(err.str().c_str());
return false;
}
}
// Configure the string.
std::string output;
m_Makefile->ConfigureString(args[1], output, atOnly, escapeQuotes);
// Store the output in the provided variable.
m_Makefile->AddDefinition(args[2].c_str(), output.c_str());
return true;
}
//----------------------------------------------------------------------------
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bool cmStringCommand::HandleRegexCommand(std::vector<std::string> const& args)
{
if(args.size() < 2)
{
this->SetError("sub-command REGEX requires a mode to be specified.");
return false;
}
std::string mode = args[1];
if(mode == "MATCH")
{
if(args.size() < 5)
{
this->SetError("sub-command REGEX, mode MATCH needs "
"at least 5 arguments total to command.");
return false;
}
return this->RegexMatch(args);
}
else if(mode == "MATCHALL")
{
if(args.size() < 5)
{
this->SetError("sub-command REGEX, mode MATCHALL needs "
"at least 5 arguments total to command.");
return false;
}
return this->RegexMatchAll(args);
}
else if(mode == "REPLACE")
{
if(args.size() < 6)
{
this->SetError("sub-command REGEX, mode MATCH needs "
"at least 6 arguments total to command.");
return false;
}
return this->RegexReplace(args);
}
std::string e = "sub-command REGEX does not recognize mode "+mode;
this->SetError(e.c_str());
return false;
}
//----------------------------------------------------------------------------
bool cmStringCommand::RegexMatch(std::vector<std::string> const& args)
{
//"STRING(REGEX MATCH <regular_expression> <output variable> <input> [<input>...])\n";
std::string regex = args[2];
std::string outvar = args[3];
// Concatenate all the last arguments together.
std::string input = args[4];
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for(unsigned int i=5; i < args.size(); ++i)
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{
input += args[i];
}
// Compile the regular expression.
cmsys::RegularExpression re;
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if(!re.compile(regex.c_str()))
{
std::string e = "sub-command REGEX, mode MATCH failed to compile regex \""+regex+"\".";
this->SetError(e.c_str());
return false;
}
// Scan through the input for all matches.
std::string output;
if(re.find(input.c_str()))
{
std::string::size_type l = re.start();
std::string::size_type r = re.end();
if(r-l == 0)
{
std::string e = "sub-command REGEX, mode MATCH regex \""+regex+"\" matched an empty string.";
this->SetError(e.c_str());
return false;
}
output = input.substr(l, r-l);
}
// Store the output in the provided variable.
m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
return true;
}
//----------------------------------------------------------------------------
bool cmStringCommand::RegexMatchAll(std::vector<std::string> const& args)
{
//"STRING(REGEX MATCHALL <regular_expression> <output variable> <input> [<input>...])\n";
std::string regex = args[2];
std::string outvar = args[3];
// Concatenate all the last arguments together.
std::string input = args[4];
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for(unsigned int i=5; i < args.size(); ++i)
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{
input += args[i];
}
// Compile the regular expression.
cmsys::RegularExpression re;
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if(!re.compile(regex.c_str()))
{
std::string e = "sub-command REGEX, mode MATCHALL failed to compile regex \""+regex+"\".";
this->SetError(e.c_str());
return false;
}
// Scan through the input for all matches.
std::string output;
const char* p = input.c_str();
while(re.find(p))
{
std::string::size_type l = re.start();
std::string::size_type r = re.end();
if(r-l == 0)
{
std::string e = "sub-command REGEX, mode MATCHALL regex \""+regex+"\" matched an empty string.";
this->SetError(e.c_str());
return false;
}
if(output.length() > 0)
{
output += ";";
}
output += std::string(p+l, r-l);
p += r;
}
// Store the output in the provided variable.
m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
return true;
}
//----------------------------------------------------------------------------
bool cmStringCommand::RegexReplace(std::vector<std::string> const& args)
{
//"STRING(REGEX REPLACE <regular_expression> <replace_expression> <output variable> <input> [<input>...])\n"
std::string regex = args[2];
std::string replace = args[3];
std::string outvar = args[4];
// Pull apart the replace expression to find the escaped [0-9] values.
std::vector<RegexReplacement> replacement;
std::string::size_type l = 0;
while(l < replace.length())
{
std::string::size_type r = replace.find("\\", l);
if(r == std::string::npos)
{
r = replace.length();
replacement.push_back(replace.substr(l, r-l));
}
else
{
if(r-l > 0)
{
replacement.push_back(replace.substr(l, r-l));
}
if(r == (replace.length()-1))
{
this->SetError("sub-command REGEX, mode REPLACE: "
"replace-expression ends in a backslash.");
return false;
}
if((replace[r+1] >= '0') && (replace[r+1] <= '9'))
{
replacement.push_back(replace[r+1]-'0');
}
else if(replace[r+1] == 'n')
{
replacement.push_back("\n");
}
else if(replace[r+1] == '\\')
{
replacement.push_back("\\");
}
else
{
std::string e = "sub-command REGEX, mode REPLACE: Unknown escape \"";
e += replace.substr(r, 2);
e += "\"in replace-expression.";
this->SetError(e.c_str());
return false;
}
r += 2;
}
l = r;
}
// Concatenate all the last arguments together.
std::string input = args[5];
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for(unsigned int i=6; i < args.size(); ++i)
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{
input += args[i];
}
// Compile the regular expression.
cmsys::RegularExpression re;
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if(!re.compile(regex.c_str()))
{
std::string e = "sub-command REGEX, mode REPLACE failed to compile regex \""+regex+"\".";
this->SetError(e.c_str());
return false;
}
// Scan through the input for all matches.
std::string output;
std::string::size_type base = 0;
while(re.find(input.c_str()+base))
{
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std::string::size_type l2 = re.start();
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std::string::size_type r = re.end();
// 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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{
std::string e = "sub-command REGEX, mode REPLACE regex \""+regex+"\" matched an empty string.";
this->SetError(e.c_str());
return false;
}
// Concatenate the replacement for the match.
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for(unsigned int i=0; i < replacement.size(); ++i)
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{
if(replacement[i].number < 0)
{
// This is just a plain-text part of the replacement.
output += replacement[i].value;
}
else
{
// Replace with part of the match.
int n = replacement[i].number;
std::string::size_type start = re.start(n);
std::string::size_type end = re.end(n);
std::string::size_type len = input.length()-base;
if((start != std::string::npos) && (end != std::string::npos) &&
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(start <= len) && (end <= len))
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{
output += input.substr(base+start, end-start);
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}
else
{
std::string e =
"sub-command REGEX, mode REPLACE: replace expression \""+
replace+"\" contains an out-of-range escape for regex \""+
regex+"\".";
this->SetError(e.c_str());
return false;
}
}
}
// Move past the match.
base += r;
}
// Concatenate the text after the last match.
output += input.substr(base, input.length()-base);
// Store the output in the provided variable.
m_Makefile->AddDefinition(outvar.c_str(), output.c_str());
return true;
}
//----------------------------------------------------------------------------
bool cmStringCommand::HandleCompareCommand(std::vector<std::string> const& args)
{
if(args.size() < 2)
{
this->SetError("sub-command COMPARE requires a mode to be specified.");
return false;
}
std::string mode = args[1];
if((mode == "EQUAL") || (mode == "NOTEQUAL") ||
(mode == "LESS") || (mode == "GREATER"))
{
if(args.size() < 5)
{
std::string e = "sub-command COMPARE, mode ";
e += mode;
e += " needs at least 5 arguments total to command.";
this->SetError(e.c_str());
return false;
}
const std::string& left = args[2];
const std::string& right = args[3];
const std::string& outvar = args[4];
bool result;
if(mode == "LESS")
{
result = (left < right);
}
else if(mode == "GREATER")
{
result = (left > right);
}
else if(mode == "EQUAL")
{
result = (left == right);
}
else // if(mode == "NOTEQUAL")
{
result = !(left == right);
}
if(result)
{
m_Makefile->AddDefinition(outvar.c_str(), "1");
}
else
{
m_Makefile->AddDefinition(outvar.c_str(), "0");
}
return true;
}
std::string e = "sub-command COMPARE does not recognize mode "+mode;
this->SetError(e.c_str());
return false;
}
//----------------------------------------------------------------------------
bool cmStringCommand::HandleReplaceCommand(std::vector<std::string> const& args)
{
if(args.size() < 5)
{
this->SetError("sub-command REPLACE requires four arguments.");
return false;
}
const std::string& matchExpression = args[1];
const std::string& replaceExpression = args[2];
const std::string& variableName = args[3];
std::string input = args[4];
for(unsigned int i=5; i < args.size(); ++i)
{
input += args[i];
}
cmsys::SystemTools::ReplaceString(input, matchExpression.c_str(), replaceExpression.c_str());
m_Makefile->AddDefinition(variableName.c_str(), input.c_str());
return true;
}
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//----------------------------------------------------------------------------
bool cmStringCommand::HandleSubstringCommand(std::vector<std::string> const& args)
{
if(args.size() != 5)
{
this->SetError("sub-command REPLACE requires four arguments.");
return false;
}
const std::string& stringValue = args[1];
int begin = atoi(args[2].c_str());
int end = atoi(args[3].c_str());
const std::string& variableName = args[4];
size_t stringLength = stringValue.size();
int intStringLength = static_cast<int>(stringLength);
if ( begin < 0 || begin > intStringLength )
{
cmOStringStream ostr;
ostr << "begin index: " << begin << " is out of range 0 - " << stringLength;
this->SetError(ostr.str().c_str());
return false;
}
int leftOverLength = intStringLength - begin;
if ( end < 0 || end > intStringLength )
{
cmOStringStream ostr;
ostr << "end index: " << end << " is out of range " << 0 << " - " << leftOverLength;
this->SetError(ostr.str().c_str());
return false;
}
m_Makefile->AddDefinition(variableName.c_str(), stringValue.substr(begin, end).c_str());
return true;
}
//----------------------------------------------------------------------------
bool cmStringCommand::HandleLengthCommand(std::vector<std::string> const& args)
{
if(args.size() != 3)
{
this->SetError("sub-command LENGTH requires two arguments.");
return false;
}
const std::string& stringValue = args[1];
const std::string& variableName = args[2];
size_t length = stringValue.size();
char buffer[1024];
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sprintf(buffer, "%d", static_cast<int>(length));
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m_Makefile->AddDefinition(variableName.c_str(), buffer);
return true;
}