Convert utility.c into libbb.a. It is now a whole pile of .c

files.  Clean up the resulting damage and fix up the makefile.
 -Erik


git-svn-id: svn://busybox.net/trunk/busybox@2123 69ca8d6d-28ef-0310-b511-8ec308f3f277

1 files changed, 83 insertions, 0 deletions

diff --git a/libbb/process_escape_sequence.c b/libbb/process_escape_sequence.c
new file mode 100644
index 000000000..ad2be94ee
--- /dev/null
+++ b/libbb/process_escape_sequence.c
@@ -0,0 +1,83 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) tons of folks.  Tracking down who wrote what
+ * isn't something I'm going to worry about...  If you wrote something
+ * here, please feel free to acknowledge your work.
+ *
+ * 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
+ *
+ * Based in part on code from sash, Copyright (c) 1999 by David I. Bell 
+ * Permission has been granted to redistribute this code under the GPL.
+ *
+ */
+
+#include <stdio.h>
+#include <limits.h>
+#include "libbb.h"
+
+
+
+char process_escape_sequence(char **ptr)
+{
+       static const char charmap[] = {
+                   'a',  'b',  'f',  'n',  'r',  't',  'v',  '\\', 0,
+               '\a', '\b', '\f', '\n', '\r', '\t', '\v', '\\', '\\' };
+
+       const char *p;
+           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:
+*/