initial check-in

1 files changed, 33 insertions, 0 deletions

diff --git a/src/basename.c b/src/basename.c
new file mode 100644
index 0000000..25b8b24
--- /dev/null
+++ b/src/basename.c
@@ -0,0 +1,33 @@
+#include <unistd.h>
+#include <string.h>
+#include <libgen.h>
+
+static int my_write(int fd, const char *s, size_t l)
+{
+	if (!l) l = strlen(s);
+	while (l) {
+		ssize_t n = write(fd, s, l);
+		if (n<0) return -1;
+		s += n; l -= n;
+	}
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	char *s;
+	if ((unsigned)argc - 2 > 1) {
+		my_write(2, argv[0], 0);
+		my_write(2, ": missing operand\n", 0);
+		return 1;
+	}
+	s = basename(argv[1]);
+	if (argc > 2) {
+		size_t k = strlen(s);
+		size_t l = strlen(argv[2]);
+		if (k>l && !strcmp(s+(k-l), argv[2])) s[k-l]=0;
+	}
+	if (my_write(1, s, 0)<0 || my_write(1, "\n", 1)<0)
+		return 1;
+	return 0;
+}