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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 "cmScriptGenerator.h"
#include "cmSystemTools.h"
#include <utility>
cmScriptGenerator::cmScriptGenerator(std::string config_var,
std::vector<std::string> configurations)
: RuntimeConfigVariable(std::move(config_var))
, Configurations(std::move(configurations))
, ConfigurationName("")
, ConfigurationTypes(nullptr)
, ActionsPerConfig(false)
{
}
cmScriptGenerator::~cmScriptGenerator() = default;
void cmScriptGenerator::Generate(
std::ostream& os, const std::string& config,
std::vector<std::string> const& configurationTypes)
{
this->ConfigurationName = config;
this->ConfigurationTypes = &configurationTypes;
this->GenerateScript(os);
this->ConfigurationName.clear();
this->ConfigurationTypes = nullptr;
}
static void cmScriptGeneratorEncodeConfig(const std::string& config,
std::string& result)
{
for (const char* c = config.c_str(); *c; ++c) {
if (*c >= 'a' && *c <= 'z') {
result += "[";
result += static_cast<char>(*c + 'A' - 'a');
result += *c;
result += "]";
} else if (*c >= 'A' && *c <= 'Z') {
result += "[";
result += *c;
result += static_cast<char>(*c + 'a' - 'A');
result += "]";
} else {
result += *c;
}
}
}
std::string cmScriptGenerator::CreateConfigTest(const std::string& config)
{
std::string result = "\"${";
result += this->RuntimeConfigVariable;
result += "}\" MATCHES \"^(";
if (!config.empty()) {
cmScriptGeneratorEncodeConfig(config, result);
}
result += ")$\"";
return result;
}
std::string cmScriptGenerator::CreateConfigTest(
std::vector<std::string> const& configs)
{
std::string result = "\"${";
result += this->RuntimeConfigVariable;
result += "}\" MATCHES \"^(";
const char* sep = "";
for (std::string const& config : configs) {
result += sep;
sep = "|";
cmScriptGeneratorEncodeConfig(config, result);
}
result += ")$\"";
return result;
}
void cmScriptGenerator::GenerateScript(std::ostream& os)
{
// Track indentation.
Indent indent;
// Generate the script possibly with per-configuration code.
this->GenerateScriptConfigs(os, indent);
}
void cmScriptGenerator::GenerateScriptConfigs(std::ostream& os, Indent indent)
{
if (this->ActionsPerConfig) {
this->GenerateScriptActionsPerConfig(os, indent);
} else {
this->GenerateScriptActionsOnce(os, indent);
}
}
void cmScriptGenerator::GenerateScriptActions(std::ostream& os, Indent indent)
{
if (this->ActionsPerConfig) {
// This is reached for single-configuration build generators in a
// per-config script generator.
this->GenerateScriptForConfig(os, this->ConfigurationName, indent);
}
}
void cmScriptGenerator::GenerateScriptForConfig(std::ostream& /*unused*/,
const std::string& /*unused*/,
Indent /*unused*/)
{
// No actions for this generator.
}
bool cmScriptGenerator::GeneratesForConfig(const std::string& config)
{
// If this is not a configuration-specific rule then we install.
if (this->Configurations.empty()) {
return true;
}
// This is a configuration-specific rule. Check if the config
// matches this rule.
std::string config_upper = cmSystemTools::UpperCase(config);
for (std::string const& cfg : this->Configurations) {
if (cmSystemTools::UpperCase(cfg) == config_upper) {
return true;
}
}
return false;
}
void cmScriptGenerator::GenerateScriptActionsOnce(std::ostream& os,
Indent indent)
{
if (this->Configurations.empty()) {
// This rule is for all configurations.
this->GenerateScriptActions(os, indent);
} else {
// Generate a per-configuration block.
std::string config_test = this->CreateConfigTest(this->Configurations);
os << indent << "if(" << config_test << ")\n";
this->GenerateScriptActions(os, indent.Next());
os << indent << "endif(" << config_test << ")\n";
}
}
void cmScriptGenerator::GenerateScriptActionsPerConfig(std::ostream& os,
Indent indent)
{
if (this->ConfigurationTypes->empty()) {
// In a single-configuration generator there is only one action
// and it applies if the runtime-requested configuration is among
// the rule's allowed configurations. The configuration built in
// the tree does not matter for this decision but will be used to
// generate proper target file names into the code.
this->GenerateScriptActionsOnce(os, indent);
} else {
// In a multi-configuration generator we produce a separate rule
// in a block for each configuration that is built. We restrict
// the list of configurations to those to which this rule applies.
bool first = true;
for (std::string const& cfgType : *this->ConfigurationTypes) {
if (this->GeneratesForConfig(cfgType)) {
// Generate a per-configuration block.
std::string config_test = this->CreateConfigTest(cfgType);
os << indent << (first ? "if(" : "elseif(") << config_test << ")\n";
this->GenerateScriptForConfig(os, cfgType, indent.Next());
first = false;
}
}
if (!first) {
if (this->NeedsScriptNoConfig()) {
os << indent << "else()\n";
this->GenerateScriptNoConfig(os, indent.Next());
}
os << indent << "endif()\n";
}
}
}
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