1 files changed, 59 insertions, 0 deletions
diff --git a/one/tab.c b/one/tab.c
new file mode 100644
index 0000000..f9c6dc5
--- /dev/null
+++ b/one/tab.c
@@ -0,0 +1,59 @@
+#include <stdio.h>
+
+/* XXX: dependent on file size */
+#define MAX 1024
+
+void detab()
+{
+	char detab[MAX];
+
+	int c, i;
+	i = 0;
+	while (i < MAX && (c = getchar()) != EOF) {
+		if (c == '\t') {
+			for (int t = 0; t < 8; ++t) {
+				detab[i + t] = ' ';
+			}
+			i += 8;
+		} else {
+			detab[i++] = c;
+		}
+	}
+	detab[i] = '\0';
+	printf("%s", detab);
+}
+
+void entab()
+{
+	char entab[MAX];
+
+	int c, i, s;
+	i = s = 0;
+	while (i < MAX && (c = getchar()) != EOF) {
+		if (c == ' ') {
+			++s;
+		} else {
+			while (s > 0) {
+				if (s >= 8) {
+					entab[i++] = '\t';
+					s -= 8;
+				} else {
+					entab[i++] = ' ';
+					--s;
+				}
+			}
+			entab[i++] = c;
+		}
+	}
+
+	entab[i] = '\0';
+	printf("%s", entab);
+}
+
+int
+main()
+{
+	detab();
+	/* entab(); */
+	return 0;
+}