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Factor out common usage-help code

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This commit is contained in:
Rangi42
2025-07-27 19:20:04 -04:00
parent 16e16cdf51
commit b2747dfbd8
9 changed files with 138 additions and 179 deletions
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63
src/link/main.cpp
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@@ -15,6 +15,7 @@
#include "itertools.hpp"
#include "platform.hpp"
#include "script.hpp" // Generated from script.y
#include "usage.hpp"
#include "version.hpp"
#include "link/assign.hpp"
@@ -81,39 +82,23 @@ static option const longopts[] = {
{nullptr, no_argument, nullptr, 0 }
};
// LCOV_EXCL_START
static void printUsage() {
fputs(
"Usage: rgblink [-dhMtVvwx] [-l script] [-m map_file] [-n sym_file]\n"
" [-O overlay_file] [-o out_file] [-p pad_value]\n"
" [-S spec] <file> ...\n"
"Useful options:\n"
" -l, --linkerscript <path> set the input linker script\n"
" -m, --map <path> set the output map file\n"
" -n, --sym <path> set the output symbol list file\n"
" -o, --output <path> set the output file\n"
" -p, --pad <value> set the value to pad between sections with\n"
" -x, --nopad disable padding of output binary\n"
" -V, --version print RGBLINK version and exits\n"
"\n"
"For help, use `man rgblink' or go to https://rgbds.gbdev.io/docs/\n",
stderr
);
}
// LCOV_EXCL_STOP
[[gnu::format(printf, 1, 2), noreturn]]
static void fatalWithUsage(char const *fmt, ...) {
va_list ap;
fputs("FATAL: ", stderr);
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
putc('\n', stderr);
printUsage();
exit(1);
}
// clang-format off: long string literal
static Usage usage(
"Usage: rgblink [-dhMtVvwx] [-l script] [-m map_file] [-n sym_file]\n"
" [-O overlay_file] [-o out_file] [-p pad_value]\n"
" [-S spec] <file> ...\n"
"Useful options:\n"
" -l, --linkerscript <path> set the input linker script\n"
" -m, --map <path> set the output map file\n"
" -n, --sym <path> set the output symbol list file\n"
" -o, --output <path> set the output file\n"
" -p, --pad <value> set the value to pad between sections with\n"
" -x, --nopad disable padding of output binary\n"
" -V, --version print RGBLINK version and exits\n"
"\n"
"For help, use `man rgblink' or go to https://rgbds.gbdev.io/docs/\n"
);
// clang-format on
enum ScrambledRegion {
SCRAMBLE_ROMX,
@@ -268,10 +253,7 @@ int main(int argc, char *argv[]) {
options.isWRAM0Mode = true;
break;
case 'h':
// LCOV_EXCL_START
printUsage();
exit(0);
// LCOV_EXCL_STOP
usage.printAndExit(0); // LCOV_EXCL_LINE
case 'l':
if (linkerScriptName) {
warnx("Overriding linker script %s", linkerScriptName);
@@ -345,10 +327,7 @@ int main(int argc, char *argv[]) {
options.is32kMode = true;
break;
default:
// LCOV_EXCL_START
printUsage();
exit(1);
// LCOV_EXCL_STOP
usage.printAndExit(1); // LCOV_EXCL_LINE
}
}
@@ -356,7 +335,7 @@ int main(int argc, char *argv[]) {
// If no input files were specified, the user must have screwed up
if (curArgIndex == argc) {
fatalWithUsage("Please specify an input file (pass `-` to read from standard input)");
usage.printAndExit("Please specify an input file (pass `-` to read from standard input)");
}
// Patch the size array depending on command-line options