From aad798d9df7417009fa4438aac61ac8e0e4ded36 Mon Sep 17 00:00:00 2001 From: radiohotline Date: Sat, 14 Mar 2026 16:20:47 +0300 Subject: first commit --- src/cat.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 src/cat.c (limited to 'src/cat.c') diff --git a/src/cat.c b/src/cat.c new file mode 100644 index 0000000..b89cba6 --- /dev/null +++ b/src/cat.c @@ -0,0 +1,45 @@ +#include +#include +#include + +#define PROGRAM_NAME "cat" + +struct stat statbuf; + +int main(int argc, char* argv[]) { + FILE *fileptr = NULL; + char buf[8192]; + char ch; + + if (argc < 2) { + while (fgets(buf, sizeof(buf), stdin) != NULL) { + printf("%s", buf); + } + + return 0; + } + + if (access(argv[1], F_OK) != 0) { + printf("%s: %s: No such file or directory.\n", PROGRAM_NAME, argv[1]); + return 1; + } + + if (stat(argv[1], &statbuf) == 0 && S_ISDIR(statbuf.st_mode)) { + printf("%s: %s is a directory.\n", PROGRAM_NAME, argv[1]); + return 1; + } + + fileptr = fopen(argv[1], "r"); + + if (fileptr == NULL){ + perror("cat"); + return 1; + } + + while ((ch = fgetc(fileptr)) != EOF) { + putchar(ch); + } + + fclose(fileptr); + return 0; +} -- cgit v1.3