100 lines
3.5 KiB
C++
100 lines
3.5 KiB
C++
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/*
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* Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <iostream>
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#include "pio_assembler.h"
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#define DEFAULT_OUTPUT_FORMAT "c-sdk"
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void usage() {
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std::cerr << "usage: pioasm <options> <input> (<output>)\n\n";
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std::cerr << "Assemble file of PIO program(s) for use in applications.\n";
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std::cerr << " <input> the input filename\n";
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std::cerr << " <output> the output filename (or filename prefix if the output format produces multiple outputs).\n";
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std::cerr << " if not specified, a single output will be written to stdout\n";
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std::cerr << "\n";
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std::cerr << "options:\n";
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std::cerr << " -o <output_format> select output_format (default '" << DEFAULT_OUTPUT_FORMAT << "'); available options are:\n";
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for(const auto& f : output_format::output_formats) {
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std::cerr << " " << f->name << std::endl;
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std::cerr << " " << f->get_description() << std::endl;
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}
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std::cerr << " -p <output_param> add a parameter to be passed to the output format generator" << std::endl;
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std::cerr << " -?, --help print this help and exit\n";
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}
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int main(int argc, char *argv[]) {
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int res = 0;
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pio_assembler pioasm;
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std::string format(DEFAULT_OUTPUT_FORMAT);
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const char *input = nullptr;
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const char *output = nullptr;
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std::vector<std::string> options;
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int i = 1;
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for (; !res && i < argc; i++) {
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if (argv[i][0] != '-') break;
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if (argv[i] == std::string("-o")) {
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if (i++ < argc) {
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format = argv[i];
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} else {
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std::cerr << "error: -o requires format value" << std::endl;
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res = 1;
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}
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} else if (argv[i] == std::string("-p")) {
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if (i++ < argc) {
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options.emplace_back(argv[i]);
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} else {
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std::cerr << "error: -p requires parameter value" << std::endl;
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res = 1;
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}
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} else if (argv[i] == std::string("-?") || argv[i] == std::string("--help")) {
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usage();
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return 1;
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} else {
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std::cerr << "error: unknown option " << argv[i] << std::endl;
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res = 1;
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}
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}
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if (!res) {
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if (i != argc) {
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input = argv[i++];
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} else {
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std::cerr << "error: expected input filename\n";
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res = 1;
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}
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}
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if (!res) {
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if (i != argc) {
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output = argv[i++];
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} else {
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output = "-";
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}
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}
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if (!res && i != argc) {
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std::cerr << "unexpected command line argument " << argv[i] << std::endl;
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res = 1;
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}
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std::shared_ptr<output_format> oformat;
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if (!res) {
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const auto& e = std::find_if(output_format::output_formats.begin(), output_format::output_formats.end(),
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[&](const std::shared_ptr<output_format> &f) {
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return f->name == format;
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});
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if (e == output_format::output_formats.end()) {
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std::cerr << "error: unknown output format '" << format << "'" << std::endl;
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res = 1;
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} else {
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oformat = *e;
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}
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}
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if (res) {
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std::cerr << std::endl;
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usage();
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} else {
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res = pioasm.generate(oformat, input, output, options);
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}
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return res;
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}
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