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project: use argument parser

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This commit is contained in:
Vito Gamberini
2025-04-16 13:50:56 -04:00
parent 407363abd0
commit e28e66db8d
1 changed files with 125 additions and 168 deletions
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293
Source/cmProjectCommand.cxx
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@@ -4,14 +4,18 @@
#include <array>
#include <cstdio>
#include <functional>
#include <limits>
#include <set>
#include <utility>
#include <cm/optional>
#include <cm/string_view>
#include <cmext/string_view>
#include "cmsys/RegularExpression.hxx"
#include "cmArgumentParser.h"
#include "cmArgumentParserTypes.h"
#include "cmExecutionStatus.h"
#include "cmList.h"
#include "cmMakefile.h"
@@ -22,15 +26,52 @@
#include "cmSystemTools.h"
#include "cmValue.h"
static bool IncludeByVariable(cmExecutionStatus& status,
std::string const& variable);
static void TopLevelCMakeVarCondSet(cmMakefile& mf, std::string const& name,
std::string const& value);
namespace {
bool IncludeByVariable(cmExecutionStatus& status, std::string const& variable);
void TopLevelCMakeVarCondSet(cmMakefile& mf, std::string const& name,
std::string const& value);
struct ProjectArguments : ArgumentParser::ParseResult
{
cm::optional<std::string> ProjectName;
cm::optional<std::string> Version;
cm::optional<std::string> Description;
cm::optional<std::string> HomepageURL;
cm::optional<ArgumentParser::MaybeEmpty<std::vector<std::string>>> Languages;
};
struct ProjectArgumentParser : public cmArgumentParser<void>
{
ProjectArgumentParser& BindKeywordMissingValue(
std::vector<cm::string_view>& ref)
{
this->cmArgumentParser<void>::BindKeywordMissingValue(
[&ref](Instance&, cm::string_view arg) { ref.emplace_back(arg); });
return *this;
}
};
} // namespace
bool cmProjectCommand(std::vector<std::string> const& args,
cmExecutionStatus& status)
{
if (args.empty()) {
std::vector<std::string> unparsedArgs;
std::vector<cm::string_view> missingValueKeywords;
std::vector<cm::string_view> parsedKeywords;
ProjectArguments prArgs;
ProjectArgumentParser{}
.BindKeywordMissingValue(missingValueKeywords)
.BindParsedKeywords(parsedKeywords)
.Bind(0, prArgs.ProjectName)
.Bind("VERSION"_s, prArgs.Version)
.Bind("DESCRIPTION"_s, prArgs.Description)
.Bind("HOMEPAGE_URL"_s, prArgs.HomepageURL)
.Bind("LANGUAGES"_s, prArgs.Languages)
.Parse(args, &unparsedArgs, 0);
if (!prArgs.ProjectName) {
status.SetError("PROJECT called with incorrect number of arguments");
return false;
}
@@ -49,18 +90,16 @@ bool cmProjectCommand(std::vector<std::string> const& args,
return false;
}
std::string const& projectName = args[0];
if (!IncludeByVariable(status,
"CMAKE_PROJECT_" + projectName + "_INCLUDE_BEFORE")) {
if (!IncludeByVariable(
status, "CMAKE_PROJECT_" + *prArgs.ProjectName + "_INCLUDE_BEFORE")) {
return false;
}
mf.SetProjectName(projectName);
mf.SetProjectName(*prArgs.ProjectName);
cmPolicies::PolicyStatus cmp0180 = mf.GetPolicyStatus(cmPolicies::CMP0180);
std::string varName = cmStrCat(projectName, "_BINARY_DIR"_s);
std::string varName = cmStrCat(*prArgs.ProjectName, "_BINARY_DIR"_s);
bool nonCacheVarAlreadySet = mf.IsNormalDefinitionSet(varName);
mf.AddCacheDefinition(varName, mf.GetCurrentBinaryDirectory(),
"Value Computed by CMake", cmStateEnums::STATIC);
@@ -68,7 +107,7 @@ bool cmProjectCommand(std::vector<std::string> const& args,
mf.AddDefinition(varName, mf.GetCurrentBinaryDirectory());
}
varName = cmStrCat(projectName, "_SOURCE_DIR"_s);
varName = cmStrCat(*prArgs.ProjectName, "_SOURCE_DIR"_s);
nonCacheVarAlreadySet = mf.IsNormalDefinitionSet(varName);
mf.AddCacheDefinition(varName, mf.GetCurrentSourceDirectory(),
"Value Computed by CMake", cmStateEnums::STATIC);
@@ -79,11 +118,11 @@ bool cmProjectCommand(std::vector<std::string> const& args,
mf.AddDefinition("PROJECT_BINARY_DIR", mf.GetCurrentBinaryDirectory());
mf.AddDefinition("PROJECT_SOURCE_DIR", mf.GetCurrentSourceDirectory());
mf.AddDefinition("PROJECT_NAME", projectName);
mf.AddDefinition("PROJECT_NAME", *prArgs.ProjectName);
mf.AddDefinitionBool("PROJECT_IS_TOP_LEVEL", mf.IsRootMakefile());
varName = cmStrCat(projectName, "_IS_TOP_LEVEL"_s);
varName = cmStrCat(*prArgs.ProjectName, "_IS_TOP_LEVEL"_s);
nonCacheVarAlreadySet = mf.IsNormalDefinitionSet(varName);
mf.AddCacheDefinition(varName, mf.IsRootMakefile() ? "ON" : "OFF",
"Value Computed by CMake", cmStateEnums::STATIC);
@@ -99,143 +138,52 @@ bool cmProjectCommand(std::vector<std::string> const& args,
// will work.
if (!mf.GetDefinition("CMAKE_PROJECT_NAME") || mf.IsRootMakefile()) {
mf.RemoveDefinition("CMAKE_PROJECT_NAME");
mf.AddCacheDefinition("CMAKE_PROJECT_NAME", projectName,
mf.AddCacheDefinition("CMAKE_PROJECT_NAME", *prArgs.ProjectName,
"Value Computed by CMake", cmStateEnums::STATIC);
}
bool haveVersion = false;
bool haveLanguages = false;
bool haveDescription = false;
bool haveHomepage = false;
std::string version;
std::string description;
std::string homepage;
std::vector<std::string> languages;
std::function<void()> missedValueReporter;
auto resetReporter = [&missedValueReporter]() {
missedValueReporter = std::function<void()>();
};
enum Doing
{
DoingDescription,
DoingHomepage,
DoingLanguages,
DoingVersion
};
Doing doing = DoingLanguages;
for (size_t i = 1; i < args.size(); ++i) {
if (args[i] == "LANGUAGES") {
if (haveLanguages) {
mf.IssueMessage(MessageType::FATAL_ERROR,
"LANGUAGES may be specified at most once.");
cmSystemTools::SetFatalErrorOccurred();
return true;
}
haveLanguages = true;
if (missedValueReporter) {
missedValueReporter();
}
doing = DoingLanguages;
if (!languages.empty()) {
std::string msg = cmStrCat(
"the following parameters must be specified after LANGUAGES "
"keyword: ",
cmJoin(languages, ", "), '.');
mf.IssueMessage(MessageType::WARNING, msg);
}
} else if (args[i] == "VERSION") {
if (haveVersion) {
mf.IssueMessage(MessageType::FATAL_ERROR,
"VERSION may be specified at most once.");
cmSystemTools::SetFatalErrorOccurred();
return true;
}
haveVersion = true;
if (missedValueReporter) {
missedValueReporter();
}
doing = DoingVersion;
missedValueReporter = [&mf, &resetReporter]() {
mf.IssueMessage(
MessageType::WARNING,
"VERSION keyword not followed by a value or was followed by a "
"value that expanded to nothing.");
resetReporter();
};
} else if (args[i] == "DESCRIPTION") {
if (haveDescription) {
mf.IssueMessage(MessageType::FATAL_ERROR,
"DESCRIPTION may be specified at most once.");
cmSystemTools::SetFatalErrorOccurred();
return true;
}
haveDescription = true;
if (missedValueReporter) {
missedValueReporter();
}
doing = DoingDescription;
missedValueReporter = [&mf, &resetReporter]() {
mf.IssueMessage(
MessageType::WARNING,
"DESCRIPTION keyword not followed by a value or was followed "
"by a value that expanded to nothing.");
resetReporter();
};
} else if (args[i] == "HOMEPAGE_URL") {
if (haveHomepage) {
mf.IssueMessage(MessageType::FATAL_ERROR,
"HOMEPAGE_URL may be specified at most once.");
cmSystemTools::SetFatalErrorOccurred();
return true;
}
haveHomepage = true;
doing = DoingHomepage;
missedValueReporter = [&mf, &resetReporter]() {
mf.IssueMessage(
MessageType::WARNING,
"HOMEPAGE_URL keyword not followed by a value or was followed "
"by a value that expanded to nothing.");
resetReporter();
};
} else if (doing == DoingVersion) {
doing = DoingLanguages;
version = args[i];
resetReporter();
} else if (doing == DoingDescription) {
doing = DoingLanguages;
description = args[i];
resetReporter();
} else if (doing == DoingHomepage) {
doing = DoingLanguages;
homepage = args[i];
resetReporter();
} else // doing == DoingLanguages
{
languages.push_back(args[i]);
std::set<cm::string_view> seenKeywords;
for (cm::string_view keyword : parsedKeywords) {
if (seenKeywords.find(keyword) != seenKeywords.end()) {
mf.IssueMessage(MessageType::FATAL_ERROR,
cmStrCat(keyword, " may be specified at most once."));
cmSystemTools::SetFatalErrorOccurred();
return true;
}
seenKeywords.insert(keyword);
}
if (missedValueReporter) {
missedValueReporter();
for (cm::string_view keyword : missingValueKeywords) {
mf.IssueMessage(MessageType::WARNING,
cmStrCat(keyword,
" keyword not followed by a value or was "
"followed by a value that expanded to nothing."));
}
if ((haveVersion || haveDescription || haveHomepage) && !haveLanguages &&
!languages.empty()) {
mf.IssueMessage(MessageType::FATAL_ERROR,
"project with VERSION, DESCRIPTION or HOMEPAGE_URL must "
"use LANGUAGES before language names.");
cmSystemTools::SetFatalErrorOccurred();
return true;
}
if (haveLanguages && languages.empty()) {
languages.emplace_back("NONE");
if (!unparsedArgs.empty()) {
if (prArgs.Languages) {
mf.IssueMessage(
MessageType::WARNING,
cmStrCat("the following parameters must be specified after LANGUAGES "
"keyword: ",
cmJoin(unparsedArgs, ", "), '.'));
} else if (prArgs.Version || prArgs.Description || prArgs.HomepageURL) {
mf.IssueMessage(MessageType::FATAL_ERROR,
"project with VERSION, DESCRIPTION or HOMEPAGE_URL must "
"use LANGUAGES before language names.");
cmSystemTools::SetFatalErrorOccurred();
return true;
}
} else if (prArgs.Languages && prArgs.Languages->empty()) {
prArgs.Languages->emplace_back("NONE");
}
if (haveVersion) {
if (prArgs.Version) {
cmsys::RegularExpression vx(
R"(^([0-9]+(\.[0-9]+(\.[0-9]+(\.[0-9]+)?)?)?)?$)");
if (!vx.find(version)) {
std::string e = R"(VERSION ")" + version + R"(" format invalid.)";
if (!vx.find(*prArgs.Version)) {
std::string e =
R"(VERSION ")" + *prArgs.Version + R"(" format invalid.)";
mf.IssueMessage(MessageType::FATAL_ERROR, e);
cmSystemTools::SetFatalErrorOccurred();
return true;
@@ -253,8 +201,8 @@ bool cmProjectCommand(std::vector<std::string> const& args,
std::numeric_limits<unsigned>::digits10 + 2;
char vb[MAX_VERSION_COMPONENTS][maxIntLength];
unsigned v[MAX_VERSION_COMPONENTS] = { 0, 0, 0, 0 };
int const vc = std::sscanf(version.c_str(), "%u.%u.%u.%u", &v[0], &v[1],
&v[2], &v[3]);
int const vc = std::sscanf(prArgs.Version->c_str(), "%u.%u.%u.%u", &v[0],
&v[1], &v[2], &v[3]);
for (auto i = 0u; i < MAX_VERSION_COMPONENTS; ++i) {
if (static_cast<int>(i) < vc) {
std::snprintf(vb[i], maxIntLength, "%u", v[i]);
@@ -268,7 +216,7 @@ bool cmProjectCommand(std::vector<std::string> const& args,
} else {
// The regex above verified that we have a .-separated string of
// non-negative integer components. Keep the original string.
version_string = std::move(version);
version_string = std::move(*prArgs.Version);
// Split the integer components.
auto components = cmSystemTools::SplitString(version_string, '.');
for (auto i = 0u; i < components.size(); ++i) {
@@ -277,19 +225,19 @@ bool cmProjectCommand(std::vector<std::string> const& args,
}
std::string vv;
vv = projectName + "_VERSION";
vv = *prArgs.ProjectName + "_VERSION";
mf.AddDefinition("PROJECT_VERSION", version_string);
mf.AddDefinition(vv, version_string);
vv = projectName + "_VERSION_MAJOR";
vv = *prArgs.ProjectName + "_VERSION_MAJOR";
mf.AddDefinition("PROJECT_VERSION_MAJOR", version_components[0]);
mf.AddDefinition(vv, version_components[0]);
vv = projectName + "_VERSION_MINOR";
vv = *prArgs.ProjectName + "_VERSION_MINOR";
mf.AddDefinition("PROJECT_VERSION_MINOR", version_components[1]);
mf.AddDefinition(vv, version_components[1]);
vv = projectName + "_VERSION_PATCH";
vv = *prArgs.ProjectName + "_VERSION_PATCH";
mf.AddDefinition("PROJECT_VERSION_PATCH", version_components[2]);
mf.AddDefinition(vv, version_components[2]);
vv = projectName + "_VERSION_TWEAK";
vv = *prArgs.ProjectName + "_VERSION_TWEAK";
mf.AddDefinition("PROJECT_VERSION_TWEAK", version_components[3]);
mf.AddDefinition(vv, version_components[3]);
// Also, try set top level variables
@@ -309,11 +257,11 @@ bool cmProjectCommand(std::vector<std::string> const& args,
"PROJECT_VERSION_MINOR",
"PROJECT_VERSION_PATCH",
"PROJECT_VERSION_TWEAK",
projectName + "_VERSION",
projectName + "_VERSION_MAJOR",
projectName + "_VERSION_MINOR",
projectName + "_VERSION_PATCH",
projectName + "_VERSION_TWEAK" };
*prArgs.ProjectName + "_VERSION",
*prArgs.ProjectName + "_VERSION_MAJOR",
*prArgs.ProjectName + "_VERSION_MINOR",
*prArgs.ProjectName + "_VERSION_PATCH",
*prArgs.ProjectName + "_VERSION_TWEAK" };
if (mf.IsRootMakefile()) {
vv.emplace_back("CMAKE_PROJECT_VERSION");
vv.emplace_back("CMAKE_PROJECT_VERSION_MAJOR");
@@ -329,34 +277,42 @@ bool cmProjectCommand(std::vector<std::string> const& args,
}
}
mf.AddDefinition("PROJECT_DESCRIPTION", description);
mf.AddDefinition(projectName + "_DESCRIPTION", description);
TopLevelCMakeVarCondSet(mf, "CMAKE_PROJECT_DESCRIPTION", description);
std::string const& desc = prArgs.Description.value_or("");
mf.AddDefinition("PROJECT_DESCRIPTION", desc);
mf.AddDefinition(*prArgs.ProjectName + "_DESCRIPTION", desc);
TopLevelCMakeVarCondSet(mf, "CMAKE_PROJECT_DESCRIPTION", desc);
mf.AddDefinition("PROJECT_HOMEPAGE_URL", homepage);
mf.AddDefinition(projectName + "_HOMEPAGE_URL", homepage);
TopLevelCMakeVarCondSet(mf, "CMAKE_PROJECT_HOMEPAGE_URL", homepage);
std::string const& url = prArgs.HomepageURL.value_or("");
mf.AddDefinition("PROJECT_HOMEPAGE_URL", url);
mf.AddDefinition(*prArgs.ProjectName + "_HOMEPAGE_URL", url);
TopLevelCMakeVarCondSet(mf, "CMAKE_PROJECT_HOMEPAGE_URL", url);
if (languages.empty()) {
if (unparsedArgs.empty() && !prArgs.Languages) {
// if no language is specified do c and c++
languages = { "C", "CXX" };
mf.EnableLanguage({ "C", "CXX" }, false);
} else {
if (!unparsedArgs.empty()) {
mf.EnableLanguage(unparsedArgs, false);
}
if (prArgs.Languages) {
mf.EnableLanguage(*prArgs.Languages, false);
}
}
mf.EnableLanguage(languages, false);
if (!IncludeByVariable(status, "CMAKE_PROJECT_INCLUDE")) {
return false;
}
if (!IncludeByVariable(status,
"CMAKE_PROJECT_" + projectName + "_INCLUDE")) {
if (!IncludeByVariable(
status, "CMAKE_PROJECT_" + *prArgs.ProjectName + "_INCLUDE")) {
return false;
}
return true;
}
static bool IncludeByVariable(cmExecutionStatus& status,
std::string const& variable)
namespace {
bool IncludeByVariable(cmExecutionStatus& status, std::string const& variable)
{
cmMakefile& mf = status.GetMakefile();
cmValue include = mf.GetDefinition(variable);
@@ -414,8 +370,8 @@ static bool IncludeByVariable(cmExecutionStatus& status,
return !failed;
}
static void TopLevelCMakeVarCondSet(cmMakefile& mf, std::string const& name,
std::string const& value)
void TopLevelCMakeVarCondSet(cmMakefile& mf, std::string const& name,
std::string const& value)
{
// Set the CMAKE_PROJECT_XXX variable to be the highest-level
// project name in the tree. If there are two project commands
@@ -427,3 +383,4 @@ static void TopLevelCMakeVarCondSet(cmMakefile& mf, std::string const& name,
cmStateEnums::STATIC);
}
}
}