diff options
Diffstat (limited to '7ed.c')
| -rw-r--r-- | 7ed.c | 54 |
1 files changed, 41 insertions, 13 deletions
@@ -3,35 +3,63 @@ #include <unistd.h> #include <string.h> #include "7ed.h" +#include "input.h" #include <stdint.h> -#define USAGE "" +#define VERSION 1 +#define USAGE "7ed [OPTION] [FILENAME]\n" \ + "\nVALID OPTIONS:\n\n"\ + " -v Prints out the version number\n"\ + " -i Input file\n" + #define PROGRAM_NAME "7ed" int main (int argc, char *argv[]) { + if (argc == 1) { + fprintf(stderr, "%s: Please provide a file.\n%s\n", argv[0], USAGE); + return EXIT_FAILURE; + } + + int i_used = FALSE_7ED; // These flags are to make sure -v and -i dont get used together. It makes the program feel a bit nicer. + int v_used = FALSE_7ED; + int opt; int returnval; - while ((opt = getopt(argc, argv, "i:")) != -1) { + char *optarg_copy = NULL; // We will copy optarg to this + while ((opt = getopt(argc, argv, "i:v")) != -1) { switch (opt) { case 'i': - returnval = startmode(optarg); - if (returnval == 1) { - return EXIT_FAILURE; - } - break; + optarg_copy = malloc(strlen(optarg) + 1); // malloc memory for optarg_copy + strcpy(optarg_copy, optarg); // Copy optarg to optarg_copy + i_used = TRUE_7ED; + + break; + case 'v': + + v_used = TRUE_7ED; + break; - default: - fprintf(stderr, "%s", USAGE); - return EXIT_FAILURE; } } - - if (argc == 1) { - fprintf(stderr, "%s: Please provide a file.\n%s", argv[0], USAGE); + if (i_used == TRUE_7ED && v_used == TRUE_7ED) { // If both flags are used print usage and exit + free(optarg_copy); + fprintf(stderr, "%s", USAGE); return EXIT_FAILURE; } + + if (i_used == TRUE_7ED) { // enter startmode if we used 'i' + returnval = startmode(optarg_copy); + if (returnval == 1) { + free(optarg_copy); + return EXIT_FAILURE; + } + free(optarg_copy); + } + if (v_used == TRUE_7ED) { // print version + fprintf(stdout, "7Editor Version %d\n", VERSION); + } return EXIT_SUCCESS; |