* 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

2 files changed, 7 insertions, 33 deletions

diff --git a/coreutils/echo.c b/coreutils/echo.c
index 4659e4bc6..6e279d1c6 100644
--- a/coreutils/echo.c
+++ b/coreutils/echo.c
@@ -40,7 +40,7 @@ extern int
 echo_main(int argc, char** argv)
 {
         register char **ap;
-        register char *p;
+        char *p;
         register char c;
         int nflag = 0;
         int eflag = 0;
@@ -65,28 +65,10 @@ echo_main(int argc, char** argv)
         while ((p = *ap++) != NULL) {
                 while ((c = *p++) != '\0') {
                         if (c == '\\' && eflag) {
-                                switch (c = *p++) {
-                                case 'a':  c = '\007'; break;
-                                case 'b':  c = '\b';  break;
-                                case 'c':  exit( 0);            /* exit */
-                                case 'f':  c = '\f';  break;
-                                case 'n':  c = '\n';  break;
-                                case 'r':  c = '\r';  break;
-                                case 't':  c = '\t';  break;
-                                case 'v':  c = '\v';  break;
-                                case '\\':  break;              /* c = '\\' */
-                                case '0': case '1': case '2': case '3':
-                                case '4': case '5': case '6': case '7':
-                                        c -= '0';
-                                        if (*p >= '0' && *p <= '7')
-                                                c = c * 8 + (*p++ - '0');
-                                        if (*p >= '0' && *p <= '7')
-                                        c = c * 8 + (*p++ - '0');
-                                        break;
-                                default:
-                                        p--;
-                                        break;
-                                }
+                                if (*p == 'c')
+                                        exit(0);
+                                else
+                                        c = process_escape_sequence(&p);
                         }
                         putchar(c);
                 }
diff --git a/coreutils/tr.c b/coreutils/tr.c
index 3e7ba583c..48cdd47bd 100644
--- a/coreutils/tr.c
+++ b/coreutils/tr.c
@@ -111,22 +111,14 @@ static void map(register unsigned char *string1, register unsigned char *string2
         }
 }
 
-static void expand(register char *arg, register unsigned char *buffer)
+static void expand(char *arg, register unsigned char *buffer)
 {
         int i, ac;
 
         while (*arg) {
                 if (*arg == '\\') {
                         arg++;
-                        i = ac = 0;
-                        if (*arg >= '0' && *arg <= '7') {
-                                do {
-                                        ac = (ac << 3) + *arg++ - '0';
-                                        i++;
-                                } while (i < 4 && *arg >= '0' && *arg <= '7');
-                                *buffer++ = ac;
-                        } else if (*arg != '\0')
-                                *buffer++ = *arg++;
+                        *buffer++ = process_escape_sequence(&arg);
                 } else if (*arg == '[') {
                         arg++;
                         i = *arg++;