* Fix to tr so it recognizes standard escape sequences. Merged common

    escape seq. code from tr and echo into utility.c.  Fix thanks to
    Matt Kraai <kraai@alumni.carnegiemellon.edu>.
* This should close Bug #1015.  Please test.
 -Erik


git-svn-id: svn://busybox.net/trunk/busybox@737 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 45 insertions, 0 deletions

diff --git a/utility.c b/utility.c
index de53dbda8..f3af01f44 100644
--- a/utility.c
+++ b/utility.c
@@ -1617,6 +1617,51 @@ extern char *get_line_from_file(FILE *file)
         return linebuf;
 }
 
+#if defined BB_ECHO || defined BB_TR
+char process_escape_sequence(char **ptr)
+{
+        char c;
+
+        switch (c = *(*ptr)++) {
+        case 'a':
+                c = '\a';
+                break;
+        case 'b':
+                c = '\b';
+                break;
+        case 'f':
+                c = '\f';
+                break;
+        case 'n':
+                c = '\n';
+                break;
+        case 't':
+                c = '\t';
+                break;
+        case 'v':
+                c = '\v';
+                break;
+        case '\\':
+                c = '\\';
+                break;
+        case '0': case '1': case '2': case '3':
+        case '4': case '5': case '6': case '7':
+                c -= '0';
+                if ('0' <= **ptr && **ptr <= '7') {
+                        c = c * 8 + (*(*ptr)++ - '0');
+                        if ('0' <= **ptr && **ptr <= '7')
+                                c = c * 8 + (*(*ptr)++ - '0');
+                }
+                break;
+        default:
+                (*ptr)--;
+                c = '\\';
+                break;
+        }
+        return c;
+}
+#endif
+
 /* END CODE */
 /*
 Local Variables: