1 files changed, 44 insertions, 0 deletions
diff --git a/tools/crlf.c b/tools/crlf.c
new file mode 100644
index 000000000..f81f77e69
--- /dev/null
+++ b/tools/crlf.c
@@ -0,0 +1,44 @@
+/* crlf.c
+ */
+
+#include <stdio.h>
+
+int
+main(int argc, char **argv)
+{
+    int c, lc;
+    int off=0;
+
+    if( argc > 1 ) {
+	fprintf(stderr, "no arguments, please\n");
+	return 1;
+    }
+
+    lc = -1;
+    while( (c=getchar()) != EOF ) {
+      #if 0
+	if( c == '\r' && lc == ' ' )
+	    fprintf(stderr,"SP,CR at %d\n", off );
+	if( c == '\n' && lc == ' ' )
+	    fprintf(stderr,"SP,LF at %d\n", off );
+      #endif
+	if( c == '\n' && lc == '\r' )
+	    putchar(c);
+	else if( c == '\n' ) {
+	    putchar('\r');
+	    putchar(c);
+	}
+	else if( c != '\n' && lc == '\r' ) {
+	    putchar('\n');
+	    putchar(c);
+	}
+	else
+	    putchar(c);
+
+	lc = c;
+	off++;
+    }
+
+    return 0;
+}
+