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Add stdin parsing of spirv #284

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Oct 7, 2024
Merged

Add stdin parsing of spirv #284

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43 changes: 28 additions & 15 deletions main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@
limitations under the License.
*/

#include <cstdint>
#if defined(WIN32)
#define _CRTDBG_MAP_ALLOC
#include <crtdbg.h>
Expand Down Expand Up @@ -108,25 +109,37 @@ int main(int argn, char** argv) {
bool ci_mode = arg_parser.GetFlag("ci", "ci");

std::string input_spv_path;
if (!arg_parser.GetArg(0, &input_spv_path)) {
std::cerr << "ERROR: no SPIR-V file specified" << std::endl;
return EXIT_FAILURE;
}
std::vector<uint8_t> spv_data;

std::ifstream spv_ifstream(input_spv_path.c_str(), std::ios::binary);
if (!spv_ifstream.is_open()) {
std::cerr << "ERROR: could not open '" << input_spv_path << "' for reading" << std::endl;
return EXIT_FAILURE;
}
// Get SPIR-V data/input
if (arg_parser.GetArg(0, &input_spv_path)) {
std::ifstream spv_ifstream(input_spv_path.c_str(), std::ios::binary);
if (!spv_ifstream.is_open()) {
std::cerr << "ERROR: could not open '" << input_spv_path << "' for reading" << std::endl;
return EXIT_FAILURE;
}

spv_ifstream.seekg(0, std::ios::end);
size_t size = static_cast<size_t>(spv_ifstream.tellg());
spv_ifstream.seekg(0, std::ios::beg);
spv_ifstream.seekg(0, std::ios::end);
size_t size = static_cast<size_t>(spv_ifstream.tellg());
spv_ifstream.seekg(0, std::ios::beg);

spv_data.resize(size);
spv_ifstream.read((char*)spv_data.data(), size);
} else {
uint8_t buffer[4096];
size_t bytes_read = fread(buffer, 1, sizeof(buffer), stdin);
if (bytes_read == 0) {
std::cerr << "ERROR: no SPIR-V file specified" << std::endl;
return EXIT_FAILURE;
}
spv_data.insert(spv_data.end(), buffer, buffer + bytes_read);
while ((bytes_read = fread(buffer, 1, sizeof(buffer), stdin)) > 0) {
spv_data.insert(spv_data.end(), buffer, buffer + bytes_read);
}
}

// run reflection with input
{
std::vector<char> spv_data(size);
spv_ifstream.read(spv_data.data(), size);

spv_reflect::ShaderModule reflection(spv_data.size(), spv_data.data());
if (reflection.GetResult() != SPV_REFLECT_RESULT_SUCCESS) {
std::cerr << "ERROR: could not process '" << input_spv_path << "' (is it a valid SPIR-V bytecode?)" << std::endl;
Expand Down
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