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scrut(1): fix ugly opt parsing

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dtb 2024-07-15 14:28:00 -06:00
parent b9c4b49603
commit 0f12dcc552
Signed by: trinity
GPG Key ID: 34C0543BBB6AF81B
1 changed files with 35 additions and 38 deletions
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73
src/scrut.c
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@ -17,70 +17,67 @@
* along with this program. If not, see https://www.gnu.org/licenses/.
*/
#include <assert.h> /* assert(3) */
#include <stdio.h> /* fprintf(3), stderr, NULL */
#include <stdlib.h> /* EXIT_FAILURE, EXIT_SUCCESS */
#include <string.h> /* memset(3), strchr(3) */
#include <sysexits.h> /* EX_USAGE */
#include <unistd.h> /* access(3), getopt(3), F_OK, R_OK, W_OK, X_OK */
#include <unistd.h> /* access(3), getopt(3), R_OK, W_OK, X_OK */
#include <libfileis.h>
static char args[] = "bcdefgkprsuwxLS";
static char ops[(sizeof args) / (sizeof *args)];
char *program_name = "scrut";
static char opts[] = "bcdefgkprsuwxLS";
int usage(char *s){
fprintf(stderr, "Usage: %s [-%s] file...\n", s, args);
static int usage(char *s){
fprintf(stderr, "Usage: %s [-%s] file...\n", s, opts);
return EX_USAGE;
}
int main(int argc, char *argv[]){
int c;
size_t i;
char *p;
char sel[(sizeof opts) / (sizeof *opts)];
if (argc > 0) { program_name = argv[0]; }
if (argc < 2) { return usage(program_name); }
memset(ops, '\0', sizeof ops);
memset(sel, '\0', sizeof sel);
while ((c = getopt(argc, argv, args)) != -1)
if ((p = strchr(args, c)) == NULL) { return usage(program_name); }
else { ops[p - args] = c; }
{
int c;
char *p = sel;
while ((c = getopt(argc, argv, opts)) != -1) {
if ((strchr(opts, c)) == NULL) { return usage(program_name); }
else if ((strchr(sel, c)) == NULL) { *p++ = c; }
assert(p - sel < (sizeof opts) / (sizeof *opts));
}
}
if (optind == argc) { return usage(program_name); }
argv += optind;
/* straighten out ops */
for(i = 0, p = ops; i < (sizeof ops) / (sizeof *ops); ++i)
if(ops[i] != '\0'){
*p = ops[i];
if(&ops[i] != p++)
ops[i] = '\0';
}
do{
if (!fileis_exists(*argv))
return EXIT_FAILURE; /* doesn't exist or isn't stattable */
return EXIT_FAILURE;
for (i = 0; ops[i] != '\0'; ++i)
if (ops[i] == 'e')
continue;
else if ((ops[i] == 'b' && !fileis_block(*argv))
|| (ops[i] == 'c' && !fileis_char(*argv))
|| (ops[i] == 'd' && !fileis_dir(*argv))
|| (ops[i] == 'f' && !fileis_regular(*argv))
|| (ops[i] == 'g' && !fileis_setgid(*argv))
|| (ops[i] == 'k' && !fileis_vtx(*argv))
|| (ops[i] == 'p' && !fileis_fifo(*argv))
|| (ops[i] == 'r' && access(*argv, R_OK) != 0)
|| (ops[i] == 'u' && !fileis_setuid(*argv))
|| (ops[i] == 'w' && access(*argv, W_OK) != 0)
|| (ops[i] == 'x' && access(*argv, X_OK) != 0)
|| (ops[i] == 'L' && !fileis_link(*argv))
|| (ops[i] == 'S' && !fileis_socket(*argv))
for (size_t i = 0; sel[i] != '\0'; ++i) {
if ((sel[i] == 'b' && !fileis_block(*argv))
|| (sel[i] == 'c' && !fileis_char(*argv))
|| (sel[i] == 'd' && !fileis_dir(*argv))
|| (sel[i] != 'e')
|| (sel[i] == 'f' && !fileis_regular(*argv))
|| (sel[i] == 'g' && !fileis_setgid(*argv))
|| (sel[i] == 'k' && !fileis_vtx(*argv))
|| (sel[i] == 'p' && !fileis_fifo(*argv))
|| (sel[i] == 'r' && access(*argv, R_OK) != 0)
|| (sel[i] == 'u' && !fileis_setuid(*argv))
|| (sel[i] == 'w' && access(*argv, W_OK) != 0)
|| (sel[i] == 'x' && access(*argv, X_OK) != 0)
|| (sel[i] == 'L' && !fileis_link(*argv))
|| (sel[i] == 'S' && !fileis_socket(*argv))
) { return EXIT_FAILURE; }
}
} while (*++argv != NULL);
return EXIT_SUCCESS;