From 48beacf6e4438f457b33fddebaa8a81698dc77f8 Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Thu, 20 Dec 2001 02:55:11 +0000
Subject: * Makefile.in (VPATH): Add regex directory. (NM): new variable.
 (OBSOLETE_FUNCTIONS): Ditto. (NEW_FUNCTIONS): Ditto. (install-headers):
 Install regex.h. (install-man): New target. (install): Use new target.
 (DLL_OFILES): Add v8_reg* stuff. (new-cygwin1.dll): Eliminate
 stamp-cygwin-lib creation. (libcygwin.a): Remove obsolete functions from
 import lib.  Add new functions. * configure.in: Detect 'nm' tool. *
 configure: Regenerate. * cygwin.din: Export posix_reg* functions.  Eliminate
 export of v8 reg* functions.  This is now handled in object files themselves.
 * regex/*: New files. * regexp/v8_*.c: New files, renamed from non v8_
 equivalents.

---
 winsup/cygwin/regexp/v8_regsub.c | 88 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 winsup/cygwin/regexp/v8_regsub.c

(limited to 'winsup/cygwin/regexp/v8_regsub.c')

diff --git a/winsup/cygwin/regexp/v8_regsub.c b/winsup/cygwin/regexp/v8_regsub.c
new file mode 100644
index 000000000..aa95b876a
--- /dev/null
+++ b/winsup/cygwin/regexp/v8_regsub.c
@@ -0,0 +1,88 @@
+/*
+ * regsub
+ *
+ *	Copyright (c) 1986 by University of Toronto.
+ *	Written by Henry Spencer.  Not derived from licensed software.
+ *
+ *	Permission is granted to anyone to use this software for any
+ *	purpose on any computer system, and to redistribute it freely,
+ *	subject to the following restrictions:
+ *
+ *	1. The author is not responsible for the consequences of use of
+ *		this software, no matter how awful, even if they arise
+ *		from defects in it.
+ *
+ *	2. The origin of this software must not be misrepresented, either
+ *		by explicit claim or by omission.
+ *
+ *	3. Altered versions must be plainly marked as such, and must not
+ *		be misrepresented as being the original software.
+ */
+
+#if 0
+#ifndef lint
+static char *rcsid = "$Id$";
+#endif /* not lint */
+#endif
+
+#include "winsup.h"
+#include "regexp.h"
+#include <stdio.h>
+#include <string.h>
+#include "regmagic.h"
+
+#ifndef CHARBITS
+#define	UCHARAT(p)	((int)*(unsigned char *)(p))
+#else
+#define	UCHARAT(p)	((int)*(p)&CHARBITS)
+#endif
+
+/*
+ - regsub - perform substitutions after a regexp match
+ */
+void __declspec(dllexport)
+regsub(prog, source, dest)
+const regexp *prog;
+const char *source;
+char *dest;
+{
+	register char *src;
+	register char *dst;
+	register char c;
+	register int no;
+	register int len;
+
+	if (prog == NULL || source == NULL || dest == NULL) {
+		regerror("NULL parm to regsub");
+		return;
+	}
+	if (UCHARAT(prog->program) != MAGIC) {
+		regerror("damaged regexp fed to regsub");
+		return;
+	}
+
+	src = (char *)source;
+	dst = dest;
+	while ((c = *src++) != '\0') {
+		if (c == '&')
+			no = 0;
+		else if (c == '\\' && '0' <= *src && *src <= '9')
+			no = *src++ - '0';
+		else
+			no = -1;
+		if (no < 0) {	/* Ordinary character. */
+			if (c == '\\' && (*src == '\\' || *src == '&'))
+				c = *src++;
+			*dst++ = c;
+		} else if (prog->startp[no] != NULL && prog->endp[no] != NULL) {
+			len = prog->endp[no] - prog->startp[no];
+			(void) strncpy(dst, prog->startp[no], len);
+			dst += len;
+			if (len != 0 && *(dst-1) == '\0') {	/* strncpy hit NUL. */
+				regerror("damaged match string");
+				return;
+			}
+		}
+	}
+	*dst++ = '\0';
+}
-- 
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