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/*
* minicargo - MRustC-specific clone of `cargo`
* - By John Hodge (Mutabah)
*
* repository.cpp
* - Handling of (vendored) crates.io dependencies
*/
#include "repository.h"
#include "debug.h"
#include <fstream>
#if _WIN32
# include <Windows.h>
#else
# include <dirent.h>
#endif
#include "toml.h"
void Repository::load_cache(const ::helpers::path& path)
{
throw "";
}
void Repository::load_vendored(const ::helpers::path& path)
{
// Enumerate folders in this folder, try to open Cargo.toml files
// Extract package name and version from each manifest
#if _WIN32
WIN32_FIND_DATA find_data;
HANDLE find_handle = FindFirstFile( (path / "*").str().c_str(), &find_data );
if( find_handle == INVALID_HANDLE_VALUE )
throw ::std::runtime_error(::format( "Unable to open vendor directory '", path, "'" ));
do
{
auto manifest_path = path / find_data.cFileName / "Cargo.toml";
#else
auto* dp = opendir(path.str().c_str());
if( dp == nullptr )
throw ::std::runtime_error(::format( "Unable to open vendor directory '", path, "'" ));
while( const auto* dent = readdir(dp) )
{
auto manifest_path = path / dent->d_name / "Cargo.toml";
#endif
if( ! ::std::ifstream(manifest_path.str()).good() )
continue ;
//DEBUG("Opening manifest " << manifest_path);
// Scan the manifiest until both the name and version are set
bool name_set = false;
::std::string name;
bool ver_set = false;
PackageVersion ver;
TomlFile toml_file(manifest_path);
for(auto key_val : toml_file)
{
if(key_val.path.size() != 2)
continue ;
if(key_val.path[0] == "package") {
if( key_val.path[1] == "name" ) {
//assert( !name_set );
name = key_val.value.as_string();
name_set = true;
if( name_set && ver_set )
break;
}
else if( key_val.path[1] == "version" ) {
//assert( !ver_set );
ver = PackageVersion::from_string(key_val.value.as_string());
ver_set = true;
if( name_set && ver_set )
break;
}
else
;
}
}
DEBUG("Vendored package '" << name << "' v" << ver);
if(name == "")
continue ;
Entry cache_ent;
cache_ent.manifest_path = manifest_path;
cache_ent.version = ver;
m_cache.insert(::std::make_pair( name, ::std::move(cache_ent) ));
#ifndef _WIN32
}
closedir(dp);
#else
} while( FindNextFile(find_handle, &find_data) );
FindClose(find_handle);
#endif
DEBUG("Loaded " << m_cache.size() << " vendored packages");
}
::std::shared_ptr<PackageManifest> Repository::from_path(::helpers::path in_path)
{
DEBUG("Repository::from_path(" << in_path << ")");
// 1. Normalise path
auto path = in_path.normalise();
DEBUG("path = " << path);
auto it = m_path_cache.find(path);
if(it == m_path_cache.end())
{
::std::shared_ptr<PackageManifest> rv ( new PackageManifest(PackageManifest::load_from_toml(path)) );
m_path_cache.insert( ::std::make_pair(::std::move(path), rv) );
return rv;
}
else
{
return it->second;
}
}
void Repository::add_patch_path(const std::string& package_name, ::helpers::path path)
{
auto manifest_path = path / "Cargo.toml";
auto loaded_manifest = ::std::shared_ptr<PackageManifest>( new PackageManifest(PackageManifest::load_from_toml(manifest_path)) );
Entry cache_ent;
cache_ent.manifest_path = manifest_path;
cache_ent.version = loaded_manifest->version();
cache_ent.loaded_manifest = ::std::move(loaded_manifest);
m_cache.insert(::std::make_pair( package_name, ::std::move(cache_ent) ));
// TODO: If there's other packages with the same name, check for compatability (or otherwise ensure that this is the chosen version)
}
::std::shared_ptr<PackageManifest> Repository::find(const ::std::string& name, const PackageVersionSpec& version)
{
DEBUG("FIND " << name << " matching " << version);
auto itp = m_cache.equal_range(name);
Entry* best = nullptr;
for(auto i = itp.first; i != itp.second; ++i)
{
if( version.accepts(i->second.version) )
{
DEBUG("Accept " << i->second.version);
if( !best || best->version < i->second.version )
{
best = &i->second;
}
}
else
{
DEBUG("Ignore " << i->second.version);
}
}
if( best )
{
if( !best->loaded_manifest )
{
if( best->manifest_path == "" )
{
throw "TODO: Download package";
}
try
{
best->loaded_manifest = ::std::shared_ptr<PackageManifest>( new PackageManifest(PackageManifest::load_from_toml(best->manifest_path)) );
}
catch(const ::std::exception& e)
{
throw ::std::runtime_error( format("Error loading manifest '", best->manifest_path, "' - ", e.what()) );
}
}
return best->loaded_manifest;
}
else
{
return {};
}
}
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