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ris.cpp
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ris.cpp
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#include "../ris_lib/ris_resources_from_file.h"
#include "../ris_lib/ris_bundle_compression.h"
#include "../ris_lib/ris_writing_files.h"
#include "../ris_lib/template.h"
#include "../ris_lib/ris_resource_loader.h"
#include "../ris_lib/ris_default_or_from_file.h"
#include "../ris_lib/ris_resource_snapshot.h"
#include "../ris_lib/ris_late_context.h"
#include "../ris_lib/ris_late.h"
#include "../ris_lib/ris_resource_loader.h"
#include <iostream>
#include <string>
#include <stdexcept>
#include <unordered_map>
#include <boost/filesystem.hpp>
void print_usage() {
std::cout
<< "--- ris v0.3.1 ---" << std::endl
<< "a simple resource compiler for c++" << std::endl
<< "https://github.com/d-led/ris" << std::endl
<< "USAGE:" << std::endl
<< " ris <path_to>/<resources>.[json/yml/yaml] [<template_overrides>.[json/yml/yaml]]" << std::endl << std::endl
<< "Available algorithms: " << ris::bundle_compression().available_algorithms() << std::endl << std::endl
<< "Minimal YAML resource file:"
<<
R"(
#------------------------
header: "res.h"
source: "res.cpp"
namespace: "res"
class: "data"
resources:
-
#compression: "LZ4F" #compression needs including and linking to https://github.com/r-lyeh/bundle
name: "some_text"
source: "some text"
source_type: "string"
#------------------------
)" << std::endl
;
}
template <typename TResource>
std::string member_name(TResource const& res) {
if (!res.member_name.empty())
return res.member_name;
return res.name;
}
void process(std::string const& path, std::string const& source_template) {
auto full_path = absolute(boost::filesystem::path(path));
full_path.make_preferred();
std::cout << "reading " << full_path.generic_string() << std::endl;
auto user_resources = ris::load_resources_from_file(path);
auto lookup = user_resources.to_lookup();
std::cout << "read " << user_resources.resources().resources.size() << " resources" << std::endl;
auto compression = ris::bundle_compression();
auto ris_res = ris::default_or_from_file<ris::Resource>(source_template);
auto template_snapshot = ris::resource_snapshot(ris_res);
bool any_with_compression = std::any_of(std::begin(user_resources.resources().resources),
std::end(user_resources.resources().resources),
[&compression](ris::resource const& res) {
return compression.is_legal(res.compression);
});
ris::write_to_temp_first_then_move header([&ris_res, &template_snapshot, &user_resources,&lookup](std::ostream& s) {
template_snapshot["namespace_name"] = user_resources.namespace_();
template_snapshot["class_name"] = user_resources.class_();
auto lazy = ris::get_context(template_snapshot);
lazy
.lazy("header", [&lazy, &ris_res](std::ostream& s) {
ris::render(ris_res.Get("header"), lazy, s);
})
.lazy("header_declarations", [&ris_res,&user_resources,&lazy](std::ostream& s) {
for (auto& resource : user_resources.resources().resources) {
lazy.lazy("resource_member_name", [&resource](std::ostream& s){
s << member_name(resource);
});
ris::render(ris_res.Get("header_single_declaration"), lazy, s);
}
})
.lazy("header_resource_names", [&ris_res, &user_resources, &lazy](std::ostream& s) {
for (auto& resource : user_resources.resources().resources) {
lazy.lazy("resource_name", [&resource](std::ostream& s){
s << resource.name;
});
ris::render(ris_res.Get("header_single_resource_name"), lazy, s);
}
})
;
ris::render("{{header}}", lazy, s);
}, user_resources.header());
header.start();
ris::write_to_temp_first_then_move source([&](std::ostream& s) {
template_snapshot["namespace_name"] = user_resources.namespace_();
template_snapshot["class_name"] = user_resources.class_();
auto lazy = ris::get_context(template_snapshot);
lazy
.lazy("source", [&lazy, &ris_res](std::ostream& s) {
ris::render(ris_res.Get("source"), lazy, s);
})
.lazy("optional_compression_header", [&](std::ostream& s) {
if (any_with_compression)
s << "#include <bundle.hpp>\n";
})
.lazy("source_default_include", [&](std::ostream& s) {
s << "#include \"" << boost::filesystem::path(user_resources.header()).filename().generic_string() << "\"";
})
.lazy("source_definitions", [&](std::ostream& s) {
for (auto& resource : user_resources.resources().resources) {
lazy
.lazy("resource_member_name", [&](std::ostream& s){
s << member_name(resource);
})
.lazy("source_literal_bytes", [&](std::ostream& s){
static const unsigned MAX_IN_ONE_LINE = 100;
std::string data = ris::resource_loader(resource, user_resources.base_path()).get();
auto raw_size = data.size();
if (compression.is_legal(resource.compression)) {
data = compression.pack(resource.compression, data);
auto new_size = data.size();
std::cout << "[" << resource.compression << "] "
<< resource.name << ": "
<< new_size << "/" << raw_size
<< " (" << ((double)new_size / raw_size*100.0) << "%)" << std::endl;
}
int count = 0;
for (char c : data) {
if (count > MAX_IN_ONE_LINE - 1) {
count = 0;
}
if (count == 0) {
s << "\n ";
}
s << static_cast<short>(c) << ", ";
count++;
}
})
.lazy("source_return_literal", [&](std::ostream& s) {
if (compression.is_legal(resource.compression)) {
ris::render(ris_res.Get("source_return_compressed_literal"), lazy, s);
}
else {
ris::render(ris_res.Get("source_return_plain_literal"), lazy, s);
}
})
;
ris::render(ris_res.Get("source_single_definition"), lazy, s);
}
})
.lazy("source_getters", [&](std::ostream& s) {
for (auto& resource : user_resources.resources().resources) {
lazy
.lazy("resource_name", [&resource](std::ostream& s){
s << resource.name;
})
.lazy("resource_member_name", [&](std::ostream& s){
s << member_name(resource);
})
;
ris::render(ris_res.Get("source_single_getter"), lazy, s);
}
})
;
ris::render("{{source}}", lazy, s);
}, user_resources.source());
source.start();
}
int main(int argc, char ** argv) {
std::string source_template;
switch (argc) {
case 3:
source_template = argv[2];
// fall through
case 2:
try {
process(argv[1], source_template);
}
catch (std::exception& e) {
std::cerr << "Error: " << e.what() << std::endl;
return 1;
}
break;
default:
print_usage();
}
}