diff options
| -rw-r--r-- | toys/cp.c | 14 |
1 files changed, 13 insertions, 1 deletions
@@ -31,7 +31,7 @@ config CP #include "toys.h" #define FLAG_f 1 -#define FLAG_i 2 // todo +#define FLAG_i 2 #define FLAG_P 4 // todo #define FLAG_L 8 // todo #define FLAG_H 16 // todo @@ -58,6 +58,18 @@ DEFINE_GLOBALS( void cp_file(char *src, char *dst, struct stat *srcst) { int fdout = -1; + char overwrite; + + if ((toys.optflags & FLAG_i) && access(dst, R_OK) == 0) { + // -i flag is specified and dst file exists. + // If user does not confirm, don't copy the file + // Ideally I'd use perror here, but it always appends a newline + // to the string, resulting in the input prompt being displayed + // on the next line. + fprintf(stderr, "cp: overwrite '%s'? ", dst); + (void)scanf("%c", &overwrite); + if (!(overwrite == 'y' || overwrite == 'Y')) return; + } if (toys.optflags & FLAG_v) printf("'%s' -> '%s'\n", src, dst); |