1 files changed, 80 insertions, 0 deletions
diff --git a/release/src/router/busybox/libbb/process_escape_sequence.c b/release/src/router/busybox/libbb/process_escape_sequence.c
new file mode 100644
index 00000000..67b0490c
--- /dev/null
+++ b/release/src/router/busybox/libbb/process_escape_sequence.c
@@ -0,0 +1,80 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) Manuel Nova III <mnovoa3@bellsouth.net>
+ * and Vladimir Oleynik <vodz@usa.net> 
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * 
+ */
+
+#include <stdio.h>
+#include <limits.h>
+#include "libbb.h"
+
+
+
+char process_escape_sequence(const char **ptr)
+{
+	static const char charmap[] = {
+		'a',  'b',  'f',  'n',  'r',  't',  'v',  '\\', 0,
+		'\a', '\b', '\f', '\n', '\r', '\t', '\v', '\\', '\\' };
+
+	const char *p;
+	const char *q;
+	int num_digits;
+	unsigned int n;
+	
+	n = 0;
+	q = *ptr;
+
+	for ( num_digits = 0 ; num_digits < 3 ; ++num_digits) {
+		if ((*q < '0') || (*q > '7')) { /* not a digit? */
+			break;
+		}
+		n = n * 8 + (*q++ - '0');
+	}
+
+	if (num_digits == 0) {	/* mnemonic escape sequence? */
+		for (p=charmap ; *p ; p++) {
+			if (*p == *q) {
+				q++;
+				break;
+			}
+		}
+		n = *(p+(sizeof(charmap)/2));
+	}
+
+	   /* doesn't hurt to fall through to here from mnemonic case */
+	if (n > UCHAR_MAX) {	/* is octal code too big for a char? */
+		n /= 8;			/* adjust value and */
+		--q;				/* back up one char */
+	}
+
+	*ptr = q;
+	return (char) n;
+}
+
+
+/* END CODE */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/