CMake/Source/cmListCommand.cxx
Stephen Kelly 4afe6c26c6 cmAlgorithms: Add cmReverseRange adaptor.
Use it to implement list(REVERSE).
2015-02-20 21:36:58 +01:00

521 lines
15 KiB
C++

/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmListCommand.h"
#include <cmsys/RegularExpression.hxx>
#include <cmsys/SystemTools.hxx>
#include <stdlib.h> // required for atoi
#include <ctype.h>
#include <assert.h>
//----------------------------------------------------------------------------
bool cmListCommand
::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
{
if(args.size() < 2)
{
this->SetError("must be called with at least two arguments.");
return false;
}
const std::string &subCommand = args[0];
if(subCommand == "LENGTH")
{
return this->HandleLengthCommand(args);
}
if(subCommand == "GET")
{
return this->HandleGetCommand(args);
}
if(subCommand == "APPEND")
{
return this->HandleAppendCommand(args);
}
if(subCommand == "FIND")
{
return this->HandleFindCommand(args);
}
if(subCommand == "INSERT")
{
return this->HandleInsertCommand(args);
}
if(subCommand == "REMOVE_AT")
{
return this->HandleRemoveAtCommand(args);
}
if(subCommand == "REMOVE_ITEM")
{
return this->HandleRemoveItemCommand(args);
}
if(subCommand == "REMOVE_DUPLICATES")
{
return this->HandleRemoveDuplicatesCommand(args);
}
if(subCommand == "SORT")
{
return this->HandleSortCommand(args);
}
if(subCommand == "REVERSE")
{
return this->HandleReverseCommand(args);
}
std::string e = "does not recognize sub-command "+subCommand;
this->SetError(e);
return false;
}
//----------------------------------------------------------------------------
bool cmListCommand::GetListString(std::string& listString,
const std::string& var)
{
// get the old value
const char* cacheValue
= this->Makefile->GetDefinition(var);
if(!cacheValue)
{
return false;
}
listString = cacheValue;
return true;
}
//----------------------------------------------------------------------------
bool cmListCommand::GetList(std::vector<std::string>& list,
const std::string& var)
{
std::string listString;
if ( !this->GetListString(listString, var) )
{
return false;
}
// if the size of the list
if(listString.empty())
{
return true;
}
// expand the variable into a list
cmSystemTools::ExpandListArgument(listString, list, true);
// if no empty elements then just return
if (std::find(list.begin(), list.end(), std::string()) == list.end())
{
return true;
}
// if we have empty elements we need to check policy CMP0007
switch(this->Makefile->GetPolicyStatus(cmPolicies::CMP0007))
{
case cmPolicies::WARN:
{
// Default is to warn and use old behavior
// OLD behavior is to allow compatibility, so recall
// ExpandListArgument without the true which will remove
// empty values
list.clear();
cmSystemTools::ExpandListArgument(listString, list);
std::string warn = this->Makefile->GetPolicies()->
GetPolicyWarning(cmPolicies::CMP0007);
warn += " List has value = [";
warn += listString;
warn += "].";
this->Makefile->IssueMessage(cmake::AUTHOR_WARNING,
warn);
return true;
}
case cmPolicies::OLD:
// OLD behavior is to allow compatibility, so recall
// ExpandListArgument without the true which will remove
// empty values
list.clear();
cmSystemTools::ExpandListArgument(listString, list);
return true;
case cmPolicies::NEW:
return true;
case cmPolicies::REQUIRED_IF_USED:
case cmPolicies::REQUIRED_ALWAYS:
this->Makefile->IssueMessage(
cmake::FATAL_ERROR,
this->Makefile->GetPolicies()
->GetRequiredPolicyError(cmPolicies::CMP0007)
);
return false;
}
return true;
}
//----------------------------------------------------------------------------
bool cmListCommand::HandleLengthCommand(std::vector<std::string> const& args)
{
if(args.size() != 3)
{
this->SetError("sub-command LENGTH requires two arguments.");
return false;
}
const std::string& listName = args[1];
const std::string& variableName = args[args.size() - 1];
std::vector<std::string> varArgsExpanded;
// do not check the return value here
// if the list var is not found varArgsExpanded will have size 0
// and we will return 0
this->GetList(varArgsExpanded, listName);
size_t length = varArgsExpanded.size();
char buffer[1024];
sprintf(buffer, "%d", static_cast<int>(length));
this->Makefile->AddDefinition(variableName, buffer);
return true;
}
//----------------------------------------------------------------------------
bool cmListCommand::HandleGetCommand(std::vector<std::string> const& args)
{
if(args.size() < 4)
{
this->SetError("sub-command GET requires at least three arguments.");
return false;
}
const std::string& listName = args[1];
const std::string& variableName = args[args.size() - 1];
// expand the variable
std::vector<std::string> varArgsExpanded;
if ( !this->GetList(varArgsExpanded, listName) )
{
this->Makefile->AddDefinition(variableName, "NOTFOUND");
return true;
}
// FIXME: Add policy to make non-existing lists an error like empty lists.
if(varArgsExpanded.empty())
{
this->SetError("GET given empty list");
return false;
}
std::string value;
size_t cc;
const char* sep = "";
size_t nitem = varArgsExpanded.size();
for ( cc = 2; cc < args.size()-1; cc ++ )
{
int item = atoi(args[cc].c_str());
value += sep;
sep = ";";
if ( item < 0 )
{
item = (int)nitem + item;
}
if ( item < 0 || nitem <= (size_t)item )
{
std::ostringstream str;
str << "index: " << item << " out of range (-"
<< nitem << ", "
<< nitem - 1 << ")";
this->SetError(str.str());
return false;
}
value += varArgsExpanded[item];
}
this->Makefile->AddDefinition(variableName, value.c_str());
return true;
}
//----------------------------------------------------------------------------
bool cmListCommand::HandleAppendCommand(std::vector<std::string> const& args)
{
assert(args.size() >= 2);
// Skip if nothing to append.
if(args.size() < 3)
{
return true;
}
const std::string& listName = args[1];
// expand the variable
std::string listString;
this->GetListString(listString, listName);
if(!listString.empty() && !args.empty())
{
listString += ";";
}
listString += cmJoin(cmRange(args).advance(2), ";");
this->Makefile->AddDefinition(listName, listString.c_str());
return true;
}
//----------------------------------------------------------------------------
bool cmListCommand::HandleFindCommand(std::vector<std::string> const& args)
{
if(args.size() != 4)
{
this->SetError("sub-command FIND requires three arguments.");
return false;
}
const std::string& listName = args[1];
const std::string& variableName = args[args.size() - 1];
// expand the variable
std::vector<std::string> varArgsExpanded;
if ( !this->GetList(varArgsExpanded, listName) )
{
this->Makefile->AddDefinition(variableName, "-1");
return true;
}
std::vector<std::string>::iterator it =
std::find(varArgsExpanded.begin(), varArgsExpanded.end(), args[2]);
if (it != varArgsExpanded.end())
{
std::ostringstream indexStream;
indexStream << std::distance(varArgsExpanded.begin(), it);
this->Makefile->AddDefinition(variableName, indexStream.str().c_str());
return true;
}
this->Makefile->AddDefinition(variableName, "-1");
return true;
}
//----------------------------------------------------------------------------
bool cmListCommand::HandleInsertCommand(std::vector<std::string> const& args)
{
if(args.size() < 4)
{
this->SetError("sub-command INSERT requires at least three arguments.");
return false;
}
const std::string& listName = args[1];
// expand the variable
int item = atoi(args[2].c_str());
std::vector<std::string> varArgsExpanded;
if((!this->GetList(varArgsExpanded, listName)
|| varArgsExpanded.empty()) && item != 0)
{
std::ostringstream str;
str << "index: " << item << " out of range (0, 0)";
this->SetError(str.str());
return false;
}
if (!varArgsExpanded.empty())
{
size_t nitem = varArgsExpanded.size();
if ( item < 0 )
{
item = (int)nitem + item;
}
if ( item < 0 || nitem <= (size_t)item )
{
std::ostringstream str;
str << "index: " << item << " out of range (-"
<< varArgsExpanded.size() << ", "
<< (varArgsExpanded.empty() ? 0 : (varArgsExpanded.size() - 1)) << ")";
this->SetError(str.str());
return false;
}
}
varArgsExpanded.insert(varArgsExpanded.begin()+item,
args.begin() + 3, args.end());
std::string value = cmJoin(varArgsExpanded, ";");
this->Makefile->AddDefinition(listName, value.c_str());
return true;
}
//----------------------------------------------------------------------------
bool cmListCommand
::HandleRemoveItemCommand(std::vector<std::string> const& args)
{
if(args.size() < 3)
{
this->SetError("sub-command REMOVE_ITEM requires two or more arguments.");
return false;
}
const std::string& listName = args[1];
// expand the variable
std::vector<std::string> varArgsExpanded;
if ( !this->GetList(varArgsExpanded, listName) )
{
this->SetError("sub-command REMOVE_ITEM requires list to be present.");
return false;
}
std::vector<std::string> remove(args.begin() + 2, args.end());
std::sort(remove.begin(), remove.end());
std::vector<std::string>::const_iterator remEnd =
std::unique(remove.begin(), remove.end());
std::vector<std::string>::const_iterator remBegin = remove.begin();
std::vector<std::string>::const_iterator argsEnd =
cmRemoveMatching(varArgsExpanded, cmRange(remBegin, remEnd));
std::vector<std::string>::const_iterator argsBegin = varArgsExpanded.begin();
std::string value = cmJoin(cmRange(argsBegin, argsEnd), ";");
this->Makefile->AddDefinition(listName, value.c_str());
return true;
}
//----------------------------------------------------------------------------
bool cmListCommand
::HandleReverseCommand(std::vector<std::string> const& args)
{
assert(args.size() >= 2);
if(args.size() > 2)
{
this->SetError(
"sub-command REVERSE only takes one argument.");
return false;
}
const std::string& listName = args[1];
// expand the variable
std::vector<std::string> varArgsExpanded;
if ( !this->GetList(varArgsExpanded, listName) )
{
this->SetError("sub-command REVERSE requires list to be present.");
return false;
}
std::string value = cmJoin(cmReverseRange(varArgsExpanded), ";");
this->Makefile->AddDefinition(listName, value.c_str());
return true;
}
//----------------------------------------------------------------------------
bool cmListCommand
::HandleRemoveDuplicatesCommand(std::vector<std::string> const& args)
{
assert(args.size() >= 2);
if(args.size() > 2)
{
this->SetError(
"sub-command REMOVE_DUPLICATES only takes one argument.");
return false;
}
const std::string& listName = args[1];
// expand the variable
std::vector<std::string> varArgsExpanded;
if ( !this->GetList(varArgsExpanded, listName) )
{
this->SetError(
"sub-command REMOVE_DUPLICATES requires list to be present.");
return false;
}
std::vector<std::string>::const_iterator argsEnd =
cmRemoveDuplicates(varArgsExpanded);
std::vector<std::string>::const_iterator argsBegin =
varArgsExpanded.begin();
std::string value = cmJoin(cmRange(argsBegin, argsEnd), ";");
this->Makefile->AddDefinition(listName, value.c_str());
return true;
}
//----------------------------------------------------------------------------
bool cmListCommand
::HandleSortCommand(std::vector<std::string> const& args)
{
assert(args.size() >= 2);
if(args.size() > 2)
{
this->SetError(
"sub-command SORT only takes one argument.");
return false;
}
const std::string& listName = args[1];
// expand the variable
std::vector<std::string> varArgsExpanded;
if ( !this->GetList(varArgsExpanded, listName) )
{
this->SetError("sub-command SORT requires list to be present.");
return false;
}
std::sort(varArgsExpanded.begin(), varArgsExpanded.end());
std::string value = cmJoin(varArgsExpanded, ";");
this->Makefile->AddDefinition(listName, value.c_str());
return true;
}
//----------------------------------------------------------------------------
bool cmListCommand::HandleRemoveAtCommand(
std::vector<std::string> const& args)
{
if(args.size() < 3)
{
this->SetError("sub-command REMOVE_AT requires at least "
"two arguments.");
return false;
}
const std::string& listName = args[1];
// expand the variable
std::vector<std::string> varArgsExpanded;
if ( !this->GetList(varArgsExpanded, listName) )
{
this->SetError("sub-command REMOVE_AT requires list to be present.");
return false;
}
// FIXME: Add policy to make non-existing lists an error like empty lists.
if(varArgsExpanded.empty())
{
this->SetError("REMOVE_AT given empty list");
return false;
}
size_t cc;
std::vector<size_t> removed;
size_t nitem = varArgsExpanded.size();
for ( cc = 2; cc < args.size(); ++ cc )
{
int item = atoi(args[cc].c_str());
if ( item < 0 )
{
item = (int)nitem + item;
}
if ( item < 0 || nitem <= (size_t)item )
{
std::ostringstream str;
str << "index: " << item << " out of range (-"
<< nitem << ", "
<< nitem - 1 << ")";
this->SetError(str.str());
return false;
}
removed.push_back(static_cast<size_t>(item));
}
std::sort(removed.begin(), removed.end());
std::vector<size_t>::const_iterator remEnd =
std::unique(removed.begin(), removed.end());
std::vector<size_t>::const_iterator remBegin = removed.begin();
std::vector<std::string>::const_iterator argsEnd =
cmRemoveIndices(varArgsExpanded, cmRange(remBegin, remEnd));
std::vector<std::string>::const_iterator argsBegin = varArgsExpanded.begin();
std::string value = cmJoin(cmRange(argsBegin, argsEnd), ";");
this->Makefile->AddDefinition(listName, value.c_str());
return true;
}