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110 lines (94 loc) · 2.69 KB
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/**
* @file ConfigureDecision.cpp
*
* Structured CMake configure decision model.
*/
#include <vix/engine/ConfigureDecision.hpp>
#include <system_error>
#include <vix/engine/ConfigurationSignature.hpp>
namespace vix::engine
{
const char *to_string(ConfigureReason reason)
{
switch (reason)
{
case ConfigureReason::UpToDate:
return "up-to-date";
case ConfigureReason::CacheDisabled:
return "cache-disabled";
case ConfigureReason::CleanRequested:
return "clean-requested";
case ConfigureReason::MissingCMakeCache:
return "missing-cmake-cache";
case ConfigureReason::MissingSignature:
return "missing-signature";
case ConfigureReason::SignatureMismatch:
return "signature-mismatch";
}
return "missing-cmake-cache";
}
std::filesystem::path cmake_cache_path(
const std::filesystem::path &buildDir)
{
return buildDir / "CMakeCache.txt";
}
bool has_cmake_cache(
const std::filesystem::path &buildDir)
{
std::error_code ec;
const std::filesystem::path cache = cmake_cache_path(buildDir);
return std::filesystem::exists(cache, ec) && !ec;
}
bool ConfigureDecision::needs_configure() const
{
return configure;
}
ConfigureDecision evaluate_configuration(
const ConfigureDecisionOptions &options)
{
ConfigureDecision decision;
decision.cmakeCacheFile = cmake_cache_path(options.buildDir);
decision.signatureFile = options.signatureFile;
decision.expectedSignature = options.expectedSignature;
if (!options.useCache)
{
decision.configure = true;
decision.reason = ConfigureReason::CacheDisabled;
return decision;
}
if (options.clean)
{
decision.configure = true;
decision.reason = ConfigureReason::CleanRequested;
return decision;
}
if (!has_cmake_cache(options.buildDir))
{
decision.configure = true;
decision.reason = ConfigureReason::MissingCMakeCache;
return decision;
}
decision.existingSignature =
read_configuration_signature(options.signatureFile);
if (!decision.existingSignature)
{
decision.configure = true;
decision.reason = ConfigureReason::MissingSignature;
return decision;
}
if (*decision.existingSignature != options.expectedSignature)
{
decision.configure = true;
decision.reason = ConfigureReason::SignatureMismatch;
return decision;
}
decision.configure = false;
decision.reason = ConfigureReason::UpToDate;
return decision;
}
bool needs_configure(
const ConfigureDecisionOptions &options)
{
return evaluate_configuration(options).needs_configure();
}
} // namespace vix::engine