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a80e680125
1. Bravely use a real enum for has_arg, despite the warnings. 2. Use some C++11 initializers so we don't have to pass an int for this parameter. No functional change expected here.
97 lines
3.2 KiB
C++
97 lines
3.2 KiB
C++
// Implementation of the exit builtin.
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#include "config.h" // IWYU pragma: keep
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#include "exit.h"
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#include <cerrno>
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#include <cstddef>
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#include "../builtin.h"
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#include "../common.h"
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#include "../fallback.h" // IWYU pragma: keep
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#include "../io.h"
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#include "../parser.h"
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#include "../proc.h"
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#include "../reader.h"
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#include "../wgetopt.h"
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#include "../wutil.h" // IWYU pragma: keep
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struct exit_cmd_opts_t {
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bool print_help = false;
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};
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static const wchar_t *const short_options = L":h";
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static const struct woption long_options[] = {{L"help", no_argument, nullptr, 'h'}, {}};
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static int parse_cmd_opts(exit_cmd_opts_t &opts, int *optind, //!OCLINT(high ncss method)
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int argc, const wchar_t **argv, parser_t &parser, io_streams_t &streams) {
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UNUSED(parser);
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UNUSED(streams);
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const wchar_t *cmd = argv[0];
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int opt;
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wgetopter_t w;
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while ((opt = w.wgetopt_long(argc, argv, short_options, long_options, nullptr)) != -1) {
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switch (opt) { //!OCLINT(too few branches)
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case 'h': {
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opts.print_help = true;
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break;
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}
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case ':': {
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builtin_missing_argument(parser, streams, cmd, argv[w.woptind - 1]);
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return STATUS_INVALID_ARGS;
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}
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case '?': {
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// We would normally invoke builtin_unknown_option() and return an error.
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// But for this command we want to let it try and parse the value as a negative
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// return value.
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*optind = w.woptind - 1;
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return STATUS_CMD_OK;
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}
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default: {
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DIE("unexpected retval from wgetopt_long");
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}
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}
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}
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*optind = w.woptind;
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return STATUS_CMD_OK;
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}
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/// The exit builtin. Calls reader_exit to exit and returns the value specified.
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maybe_t<int> builtin_exit(parser_t &parser, io_streams_t &streams, const wchar_t **argv) {
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const wchar_t *cmd = argv[0];
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int argc = builtin_count_args(argv);
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exit_cmd_opts_t opts;
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int optind;
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int retval = parse_cmd_opts(opts, &optind, argc, argv, parser, streams);
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if (retval != STATUS_CMD_OK) return retval;
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if (opts.print_help) {
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builtin_print_help(parser, streams, cmd);
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return STATUS_CMD_OK;
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}
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if (optind + 1 < argc) {
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streams.err.append_format(BUILTIN_ERR_TOO_MANY_ARGUMENTS, cmd);
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builtin_print_error_trailer(parser, streams.err, cmd);
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return STATUS_INVALID_ARGS;
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}
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if (optind == argc) {
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retval = parser.get_last_status();
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} else {
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retval = fish_wcstoi(argv[optind]);
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if (errno) {
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streams.err.append_format(BUILTIN_ERR_NOT_NUMBER, cmd, argv[optind]);
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builtin_print_error_trailer(parser, streams.err, cmd);
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return STATUS_INVALID_ARGS;
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}
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}
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// Mark that we are exiting in the parser.
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// TODO: in concurrent mode this won't successfully exit a pipeline, as there are other parsers
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// involved. That is, `exit | sleep 1000` may not exit as hoped. Need to rationalize what
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// behavior we want here.
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parser.libdata().exit_current_script = true;
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return retval;
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}
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