1 files changed, 34 insertions, 0 deletions
diff --git a/utilities/no13.c b/utilities/no13.c
new file mode 100644
index 0000000..5245d27
--- /dev/null
+++ b/utilities/no13.c
@@ -0,0 +1,34 @@
+#include <fcntl.h>
+#include <stdio.h>
+
+main(int argc, char **argv)
+{
+	int fd, loop;
+	char ch;
+	char breakcnt = 0;
+
+	if (argc != 2) {
+		fprintf(stderr, "This program writes to stdout, so to be useful,\n\tit should be redirected (e.g no13 bla > bla.dat)\nusage: %s <filename>\n", argv[0]);
+		exit(1);
+	}
+	fd = open(argv[1], O_RDONLY, S_IREAD|S_IWRITE|S_IRGRP|S_IROTH);
+	while (read(fd, &ch, 1) == 1) {
+		if (ch == 0x0d) {	// CR
+			breakcnt++;
+			continue;
+		}
+		if (ch == 0x1a)	// Ctrl-Z
+			continue;
+
+		if (ch != 0x0a) {	// LF
+			if (breakcnt > 1) {
+				for (loop = breakcnt; loop > 0; loop--)
+					putchar(0x0d);
+				putchar(0x0a);
+			}
+			breakcnt=0;
+		}
+		putchar(ch);
+	}
+	close(fd);
+}