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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file Copyright.txt or https://cmake.org/licensing for details. */
#include "cmParseArgumentsCommand.h"
#include <map>
#include <set>
#include <sstream>
#include <utility>
#include <cm/string_view>
#include "cmArgumentParser.h"
#include "cmArgumentParserTypes.h"
#include "cmExecutionStatus.h"
#include "cmList.h"
#include "cmMakefile.h"
#include "cmMessageType.h"
#include "cmRange.h"
#include "cmStringAlgorithms.h"
#include "cmSystemTools.h"
#include "cmValue.h"
namespace {
std::string EscapeArg(const std::string& arg)
{
// replace ";" with "\;" so output argument lists will split correctly
std::string escapedArg;
for (char i : arg) {
if (i == ';') {
escapedArg += '\\';
}
escapedArg += i;
}
return escapedArg;
}
std::string JoinList(std::vector<std::string> const& arg, bool escape)
{
return escape ? cmList::to_string(cmMakeRange(arg).transform(EscapeArg))
: cmList::to_string(cmMakeRange(arg));
}
using options_map = std::map<std::string, bool>;
using single_map = std::map<std::string, std::string>;
using multi_map =
std::map<std::string, ArgumentParser::NonEmpty<std::vector<std::string>>>;
using options_set = std::set<cm::string_view>;
struct UserArgumentParser : public cmArgumentParser<void>
{
void BindKeywordsMissingValue(std::vector<cm::string_view>& ref)
{
this->cmArgumentParser<void>::BindKeywordMissingValue(
[&ref](Instance&, cm::string_view arg) { ref.emplace_back(arg); });
}
template <typename T, typename H>
void Bind(std::vector<std::string> const& names,
std::map<std::string, T>& ref, H duplicateKey)
{
for (std::string const& key : names) {
auto const it = ref.emplace(key, T{}).first;
bool const inserted = this->cmArgumentParser<void>::Bind(
cm::string_view(it->first), it->second);
if (!inserted) {
duplicateKey(key);
}
}
}
};
} // namespace
static void PassParsedArguments(
const std::string& prefix, cmMakefile& makefile, const options_map& options,
const single_map& singleValArgs, const multi_map& multiValArgs,
const std::vector<std::string>& unparsed,
const options_set& keywordsMissingValues, bool parseFromArgV)
{
for (auto const& iter : options) {
makefile.AddDefinition(prefix + iter.first,
iter.second ? "TRUE" : "FALSE");
}
for (auto const& iter : singleValArgs) {
if (!iter.second.empty()) {
makefile.AddDefinition(prefix + iter.first, iter.second);
} else {
makefile.RemoveDefinition(prefix + iter.first);
}
}
for (auto const& iter : multiValArgs) {
if (!iter.second.empty()) {
makefile.AddDefinition(prefix + iter.first,
JoinList(iter.second, parseFromArgV));
} else {
makefile.RemoveDefinition(prefix + iter.first);
}
}
if (!unparsed.empty()) {
makefile.AddDefinition(prefix + "UNPARSED_ARGUMENTS",
JoinList(unparsed, parseFromArgV));
} else {
makefile.RemoveDefinition(prefix + "UNPARSED_ARGUMENTS");
}
if (!keywordsMissingValues.empty()) {
makefile.AddDefinition(
prefix + "KEYWORDS_MISSING_VALUES",
cmList::to_string(cmMakeRange(keywordsMissingValues)));
} else {
makefile.RemoveDefinition(prefix + "KEYWORDS_MISSING_VALUES");
}
}
bool cmParseArgumentsCommand(std::vector<std::string> const& args,
cmExecutionStatus& status)
{
// cmake_parse_arguments(prefix options single multi <ARGN>)
// 1 2 3 4
// or
// cmake_parse_arguments(PARSE_ARGV N prefix options single multi)
if (args.size() < 4) {
status.SetError("must be called with at least 4 arguments.");
return false;
}
auto argIter = args.begin();
auto argEnd = args.end();
bool parseFromArgV = false;
unsigned long argvStart = 0;
if (*argIter == "PARSE_ARGV") {
if (args.size() != 6) {
status.GetMakefile().IssueMessage(
MessageType::FATAL_ERROR,
"PARSE_ARGV must be called with exactly 6 arguments.");
cmSystemTools::SetFatalErrorOccurred();
return true;
}
parseFromArgV = true;
argIter++; // move past PARSE_ARGV
if (!cmStrToULong(*argIter, &argvStart)) {
status.GetMakefile().IssueMessage(MessageType::FATAL_ERROR,
"PARSE_ARGV index '" + *argIter +
"' is not an unsigned integer");
cmSystemTools::SetFatalErrorOccurred();
return true;
}
argIter++; // move past N
}
// the first argument is the prefix
const std::string prefix = (*argIter++) + "_";
UserArgumentParser parser;
// define the result maps holding key/value pairs for
// options, single values and multi values
options_map options;
single_map singleValArgs;
multi_map multiValArgs;
// anything else is put into a vector of unparsed strings
std::vector<std::string> unparsed;
auto const duplicateKey = [&status](std::string const& key) {
status.GetMakefile().IssueMessage(
MessageType::WARNING, "keyword defined more than once: " + key);
};
// the second argument is a (cmake) list of options without argument
cmList list{ *argIter++ };
parser.Bind(list, options, duplicateKey);
// the third argument is a (cmake) list of single argument options
list.assign(*argIter++);
parser.Bind(list, singleValArgs, duplicateKey);
// the fourth argument is a (cmake) list of multi argument options
list.assign(*argIter++);
parser.Bind(list, multiValArgs, duplicateKey);
list.clear();
if (!parseFromArgV) {
// Flatten ;-lists in the arguments into a single list as was done
// by the original function(CMAKE_PARSE_ARGUMENTS).
for (; argIter != argEnd; ++argIter) {
list.append(*argIter);
}
} else {
// in the PARSE_ARGV move read the arguments from ARGC and ARGV#
std::string argc = status.GetMakefile().GetSafeDefinition("ARGC");
unsigned long count;
if (!cmStrToULong(argc, &count)) {
status.GetMakefile().IssueMessage(MessageType::FATAL_ERROR,
"PARSE_ARGV called with ARGC='" +
argc +
"' that is not an unsigned integer");
cmSystemTools::SetFatalErrorOccurred();
return true;
}
for (unsigned long i = argvStart; i < count; ++i) {
std::ostringstream argName;
argName << "ARGV" << i;
cmValue arg = status.GetMakefile().GetDefinition(argName.str());
if (!arg) {
status.GetMakefile().IssueMessage(MessageType::FATAL_ERROR,
"PARSE_ARGV called with " +
argName.str() + " not set");
cmSystemTools::SetFatalErrorOccurred();
return true;
}
list.emplace_back(*arg);
}
}
std::vector<cm::string_view> keywordsMissingValues;
parser.BindKeywordsMissingValue(keywordsMissingValues);
parser.Parse(list, &unparsed);
PassParsedArguments(
prefix, status.GetMakefile(), options, singleValArgs, multiValArgs,
unparsed,
options_set(keywordsMissingValues.begin(), keywordsMissingValues.end()),
parseFromArgV);
return true;
}
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