45 lines
729 B
C
45 lines
729 B
C
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
main(int argc, char **argv)
|
||
|
|
{
|
||
|
|
char *f, *b, *s;
|
||
|
|
int n;
|
||
|
|
|
||
|
|
if(argc < 2 || argc > 3){
|
||
|
|
fprintf(stderr, "Usage: basename string [suffix]\n");
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
s = argv[1];
|
||
|
|
b = s + strlen(s) - 1;
|
||
|
|
while(b > s && *b == '/')
|
||
|
|
b--;
|
||
|
|
*++b = 0;
|
||
|
|
if(b == s+1 && s[0] == '/') {
|
||
|
|
printf("/");
|
||
|
|
exit(0);
|
||
|
|
}
|
||
|
|
/* now b is after last char of string, trailing slashes removed */
|
||
|
|
|
||
|
|
for(f = b; f >= s; f--)
|
||
|
|
if(*f == '/'){
|
||
|
|
f++;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if(f < s)
|
||
|
|
f = s;
|
||
|
|
|
||
|
|
/* now f is first char after last remaining slash, or first char */
|
||
|
|
|
||
|
|
if(argc == 3){
|
||
|
|
n = strlen(argv[2]);
|
||
|
|
if(n < b-f && strncmp(b-n, argv[2], n) == 0){
|
||
|
|
b -= n;
|
||
|
|
*b = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
printf("%s\n", f);
|
||
|
|
exit(0);
|
||
|
|
}
|