1 files changed, 26 insertions, 41 deletions

diff --git a/bin/ed/re.c b/bin/ed/re.c
index 7553d5f..d0d4e6c 100644
--- a/bin/ed/re.c
+++ b/bin/ed/re.c
@@ -1,12 +1,9 @@
 /* re.c: This file contains the regular expression interface routines for
    the ed line editor. */
 /*-
- * Copyright (c) 1993 The Regents of the University of California.
+ * Copyright (c) 1993 Andrew Moore, Talke Studio.
  * All rights reserved.
  *
- * This code is derived from software contributed to Berkeley
- * by Andrew Moore, Talke Studio.
- *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ -15,18 +12,11 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *	This product includes software developed by the University of
- *	California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
  *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
@@ -37,40 +27,34 @@
  */
 
 #ifndef lint
-static char sccsid[] = "@(#)re.c	5.5 (Berkeley) 3/28/93";
+static char *rcsid = "@(#)$Id: re.c,v 1.2 1993/12/14 16:19:56 alm Exp $";
 #endif /* not lint */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
 #include "ed.h"
 
-extern char *lhbuf;
-extern int lhbufsz;
-extern char *ibufp;
-extern int ibufsz;
+
 extern int patlock;
 
-char errmsg[MAXFNAME + 40] = "";
+char errmsg[MAXPATHLEN + 40] = "";
 
-/* optpat: return pointer to compiled pattern from command buffer */
+/* get_compiled_pattern: return pointer to compiled pattern from command 
+   buffer */
 pattern_t *
-optpat()
+get_compiled_pattern()
 {
 	static pattern_t *exp = NULL;
 
 	char *exps;
-	char delim;
+	char delimiter;
 	int n;
 
-	if ((delim = *ibufp) == ' ') {
+	if ((delimiter = *ibufp) == ' ') {
 		sprintf(errmsg, "invalid pattern delimiter");
 		return NULL;
-	} else if (delim == '\n' || *++ibufp == '\n' || *ibufp == delim) {
+	} else if (delimiter == '\n' || *++ibufp == '\n' || *ibufp == delimiter) {
 		if (!exp) sprintf(errmsg, "no previous pattern");
 		return exp;
-	} else if ((exps = getlhs(delim)) == NULL)
+	} else if ((exps = extract_pattern(delimiter)) == NULL)
 		return NULL;
 	/* buffer alloc'd && not reserved */
 	if (exp && !patlock)
@@ -90,23 +74,24 @@ optpat()
 }
 
 
-extern int isbinary;
-
-/* getlhs: copy a pattern string from the command buffer; return pointer
-   to the copy */
+/* extract_pattern: copy a pattern string from the command buffer; return
+   pointer to the copy */
 char *
-getlhs(delim)
-	int delim;
+extract_pattern(delimiter)
+	int delimiter;
 {
+	static char *lhbuf = NULL;	/* buffer */
+	static int lhbufsz = 0;		/* buffer size */
+
 	char *nd;
 	int len;
 
-	for (nd = ibufp; *nd != delim && *nd != '\n'; nd++)
+	for (nd = ibufp; *nd != delimiter && *nd != '\n'; nd++)
 		switch (*nd) {
 		default:
 			break;
 		case '[':
-			if ((nd = ccl(++nd)) == NULL) {
+			if ((nd = parse_char_class(++nd)) == NULL) {
 				sprintf(errmsg, "unbalanced brackets ([])");
 				return NULL;
 			}
@@ -119,17 +104,17 @@ getlhs(delim)
 			break;
 		}
 	len = nd - ibufp;
-	CKBUF(lhbuf, lhbufsz, len + 1, NULL);
+	REALLOC(lhbuf, lhbufsz, len + 1, NULL);
 	memcpy(lhbuf, ibufp, len);
 	lhbuf[len] = '\0';
 	ibufp = nd;
-	return (isbinary) ? nultonl(lhbuf, len) : lhbuf;
+	return (isbinary) ? NUL_TO_NEWLINE(lhbuf, len) : lhbuf;
 }
 
 
-/* ccl: expand a POSIX character class */
+/* parse_char_class: expand a POSIX character class */
 char *
-ccl(s)
+parse_char_class(s)
 	char *s;
 {
 	int c, d;