From de9a3738c9c7dbd2b92691d29dbe91d1777fe031 Mon Sep 17 00:00:00 2001
From: "Kurt A. Schoens" <kas@ucbvax.Berkeley.EDU>
Date: Fri, 21 Nov 1980 17:10:46 -0800
Subject: [PATCH] Made fast version of readline for setptr; use fputs not
 putline there also for speed

SCCS-vsn: usr.bin/mail/fio.c 1.6
---
 usr/src/usr.bin/mail/fio.c | 38 +++++++++++++++++++++++++++++++++++---
 1 file changed, 35 insertions(+), 3 deletions(-)

diff --git a/usr/src/usr.bin/mail/fio.c b/usr/src/usr.bin/mail/fio.c
index faca996ee4..29df639090 100644
--- a/usr/src/usr.bin/mail/fio.c
+++ b/usr/src/usr.bin/mail/fio.c
@@ -10,7 +10,7 @@
  * File I/O.
  */
 
-static char *SccsId = "@(#)fio.c	1.5 %G%";
+static char *SccsId = "@(#)fio.c	1.6 %G%";
 
 /*
  * Set up the input pointers while copying the mail file into
@@ -38,7 +38,7 @@ setptr(ibuf)
 	maybe = 1;
 	flag = MUSED|MNEW;
 	for (;;) {
-		if ((count = readline(ibuf, linebuf)) == 0) {
+		if ((count = freadline(ibuf, linebuf)) == 0) {
 			this.m_flag = flag;
 			flag = MUSED|MNEW;
 			this.m_offset = offsetof(offset);
@@ -54,7 +54,7 @@ setptr(ibuf)
 			close(mestmp);
 			return;
 		}
-		if (putline(otf, linebuf) < 0) {
+		if (fputs(linebuf, otf) == NULL || putc('\n', otf) == EOF) {
 			perror("/tmp");
 			exit(1);
 		}
@@ -120,6 +120,38 @@ putline(obuf, linebuf)
 	return(c+1);
 }
 
+/*
+ * Quickly read a line from the specified input into the line
+ * buffer; return characters read.
+ */
+
+freadline(ibuf, linebuf)
+	register FILE *ibuf;
+	register char *linebuf;
+{
+	register int c;
+	register char *cp;
+
+	c = getc(ibuf);
+	cp = linebuf;
+	while (c != '\n' && c != EOF) {
+		if (c == 0) {
+			c = getc(ibuf);
+			continue;
+		}
+		if (cp - linebuf >= BUFSIZ-1) {
+			*cp = 0;
+			return(cp - linebuf + 1);
+		}
+		*cp++ = c;
+		c = getc(ibuf);
+	}
+	if (c == EOF && cp == linebuf)
+		return(0);
+	*cp = 0;
+	return(cp - linebuf + 1);
+}
+
 /*
  * Read up a line from the specified input into the line
  * buffer.  Return the number of characters read.  Do not
-- 
2.20.1