diff options
| -rwxr-xr-x | .bin/xx.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/.bin/xx.c b/.bin/xx.c index d2d86574..153ba74e 100755 --- a/.bin/xx.c +++ b/.bin/xx.c @@ -1,17 +1,24 @@ #if 0 -exec cc -Weverything -o ~/.bin/xx $0 +exec cc -Weverything -Wno-vla -o ~/.bin/xx $0 #endif #include <stdint.h> #include <stdio.h> #include <stdlib.h> +#include <unistd.h> int main(int argc, char **argv) { + size_t cols = 16; char *path = NULL; - if (argc > 1) - path = argv[1]; + while (getopt(argc, argv, "c:") > 0) + if (optopt == 'c') { + cols = (size_t) strtol(optarg, NULL, 10); + if (!cols) return EXIT_FAILURE; + } else return EXIT_FAILURE; + if (argc > optind) + path = argv[optind]; FILE *file = path ? fopen(path, "r") : stdin; if (!file) { @@ -19,7 +26,7 @@ int main(int argc, char **argv) return EXIT_FAILURE; } - uint8_t buf[16]; + uint8_t buf[cols]; for (;;) { size_t n = fread(buf, 1, sizeof(buf), file); for (size_t i = 0; i < n; ++i) |