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