87 lines
2 KiB
C
87 lines
2 KiB
C
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#include "helper.h"
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int stringToInt(char *string) {
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char *leftover = "";
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errno = 0;
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int x = strtold(string, &leftover);
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if (*leftover != '\0' || leftover == string) {
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errno = EINVAL;
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return -1;
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}
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if (errno == ERANGE) {
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printf("Number is too large or too small!\n");
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errno = EINVAL;
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return -1;
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}
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errno = 0;
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return x;
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}
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void help(char *progname) {
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fprintf(
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stderr,
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"usage: %s [-V implementation] [-B [repetitons]] [-h] [--help] file\n",
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progname);
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}
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enum argumentParseResult parseArguments(int argc, char **argv, struct configuration* c) {
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if(c == NULL) {
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return RESULT_EXIT_FAILURE;
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}
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c->implementationToUse = 0;
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c->doBenchmark = 0;
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c->benchmarkingCycles = 1;
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int opt;
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while (1) {
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static struct option longOptions[] = {{"help", no_argument, NULL, 'h'},
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NULL};
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int longOptionIndex = 0;
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opt = getopt_long(argc, argv, "V:B::h", longOptions, &longOptionIndex);
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if (-1 == opt) break;
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switch (opt) {
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case 'B':
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c->doBenchmark = 1;
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if (optarg != NULL) {
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c->benchmarkingCycles = stringToInt(optarg);
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if (errno == 0) break;
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fprintf(stderr,
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"%s: invalid argument, has to be int -- 'B' got '%s'\n",
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argv[0], optarg);
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help(argv[0]);
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return RESULT_EXIT_FAILURE;
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}
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break;
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case 'V':
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c->implementationToUse = stringToInt(optarg);
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if (errno == 0) break;
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fprintf(stderr, "%s: invalid argument, has to be int -- 'V' got '%s'\n",
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argv[0], optarg);
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help(argv[0]);
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return RESULT_EXIT_FAILURE;
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case 'h':
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help(argv[0]);
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return RESULT_EXIT_SUCCESS;
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default:
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help(argv[0]);
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return RESULT_EXIT_FAILURE;
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}
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}
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if (argc > optind) {
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c->filename = argv[optind];
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} else {
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fprintf(stderr, "%s: missing poisional argument -- 'file'\n", argv[0]);
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help(argv[0]);
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return RESULT_EXIT_FAILURE;
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}
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return RESULT_OK;
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}
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