CMake/Source/cmListCommand.cxx

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/*============================================================================
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 "cmAlgorithms.h"
#include <cmsys/RegularExpression.hxx>
#include <cmsys/SystemTools.hxx>
#include <algorithm>
#include <assert.h>
#include <ctype.h>
#include <stdlib.h> // required for atoi
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;
}
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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") {
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return this->HandleSortCommand(args);
}
if (subCommand == "REVERSE") {
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return this->HandleReverseCommand(args);
}
if (subCommand == "FILTER") {
return this->HandleFilterCommand(args);
}
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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()) {
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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);
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std::string warn = cmPolicies::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,
cmPolicies::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(cmMakeRange(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) {
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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, cmMakeRange(remBegin, remEnd));
std::vector<std::string>::const_iterator argsBegin = varArgsExpanded.begin();
std::string value = cmJoin(cmMakeRange(argsBegin, argsEnd), ";");
this->Makefile->AddDefinition(listName, value.c_str());
return true;
}
bool cmListCommand::HandleReverseCommand(std::vector<std::string> const& args)
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{
assert(args.size() >= 2);
if (args.size() > 2) {
this->SetError("sub-command REVERSE only takes one argument.");
return false;
}
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const std::string& listName = args[1];
// expand the variable
std::vector<std::string> varArgsExpanded;
if (!this->GetList(varArgsExpanded, listName)) {
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this->SetError("sub-command REVERSE requires list to be present.");
return false;
}
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std::string value = cmJoin(cmReverseRange(varArgsExpanded), ";");
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this->Makefile->AddDefinition(listName, value.c_str());
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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)) {
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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(cmMakeRange(argsBegin, argsEnd), ";");
this->Makefile->AddDefinition(listName, value.c_str());
return true;
}
bool cmListCommand::HandleSortCommand(std::vector<std::string> const& args)
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{
assert(args.size() >= 2);
if (args.size() > 2) {
this->SetError("sub-command SORT only takes one argument.");
return false;
}
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const std::string& listName = args[1];
// expand the variable
std::vector<std::string> varArgsExpanded;
if (!this->GetList(varArgsExpanded, listName)) {
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this->SetError("sub-command SORT requires list to be present.");
return false;
}
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std::sort(varArgsExpanded.begin(), varArgsExpanded.end());
std::string value = cmJoin(varArgsExpanded, ";");
this->Makefile->AddDefinition(listName, value.c_str());
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return true;
}
bool cmListCommand::HandleRemoveAtCommand(std::vector<std::string> const& args)
{
if (args.size() < 3) {
this->SetError("sub-command REMOVE_AT requires at least "
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"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, cmMakeRange(remBegin, remEnd));
std::vector<std::string>::const_iterator argsBegin = varArgsExpanded.begin();
std::string value = cmJoin(cmMakeRange(argsBegin, argsEnd), ";");
this->Makefile->AddDefinition(listName, value.c_str());
return true;
}
bool cmListCommand::HandleFilterCommand(std::vector<std::string> const& args)
{
if (args.size() < 2) {
this->SetError("sub-command FILTER requires a list to be specified.");
return false;
}
if (args.size() < 3) {
this->SetError("sub-command FILTER requires an operator to be specified.");
return false;
}
if (args.size() < 4) {
this->SetError("sub-command FILTER requires a mode to be specified.");
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 FILTER requires list to be present.");
return false;
}
const std::string& op = args[2];
bool includeMatches;
if (op == "INCLUDE") {
includeMatches = true;
} else if (op == "EXCLUDE") {
includeMatches = false;
} else {
this->SetError("sub-command FILTER does not recognize operator " + op);
return false;
}
const std::string& mode = args[3];
if (mode == "REGEX") {
if (args.size() != 5) {
this->SetError("sub-command FILTER, mode REGEX "
"requires five arguments.");
return false;
}
return this->FilterRegex(args, includeMatches, listName, varArgsExpanded);
}
this->SetError("sub-command FILTER does not recognize mode " + mode);
return false;
}
class MatchesRegex
{
public:
MatchesRegex(cmsys::RegularExpression& in_regex, bool in_includeMatches)
: regex(in_regex)
, includeMatches(in_includeMatches)
{
}
bool operator()(const std::string& target)
{
return regex.find(target) ^ includeMatches;
}
private:
cmsys::RegularExpression& regex;
const bool includeMatches;
};
bool cmListCommand::FilterRegex(std::vector<std::string> const& args,
bool includeMatches,
std::string const& listName,
std::vector<std::string>& varArgsExpanded)
{
const std::string& pattern = args[4];
cmsys::RegularExpression regex(pattern);
if (!regex.is_valid()) {
std::string error = "sub-command FILTER, mode REGEX ";
error += "failed to compile regex \"";
error += pattern;
error += "\".";
this->SetError(error);
return false;
}
std::vector<std::string>::iterator argsBegin = varArgsExpanded.begin();
std::vector<std::string>::iterator argsEnd = varArgsExpanded.end();
std::vector<std::string>::iterator newArgsEnd =
std::remove_if(argsBegin, argsEnd, MatchesRegex(regex, includeMatches));
std::string value = cmJoin(cmMakeRange(argsBegin, newArgsEnd), ";");
this->Makefile->AddDefinition(listName, value.c_str());
return true;
}