From bd48f19dd8931c871c9b79371ff68cf87d2ccc11 Mon Sep 17 00:00:00 2001
From: Fritz Elfert <felfert@to.com>
Date: Mon, 28 Jun 1999 23:51:15 +0000
Subject: Optimization for speed.

---
 lib/bufferstore.cc | 158 +++++++++++++++++++++++++++--------------------------
 1 file changed, 81 insertions(+), 77 deletions(-)

(limited to 'lib/bufferstore.cc')

diff --git a/lib/bufferstore.cc b/lib/bufferstore.cc
index 8138ad2..886b952 100644
--- a/lib/bufferstore.cc
+++ b/lib/bufferstore.cc
@@ -26,141 +26,145 @@
 #include "bufferstore.h"
 
 bufferStore::bufferStore() {
-  lenAllocd = 0;
-  buff = NULL;
-  len = 0;
-  start = 0;
+	lenAllocd = 0;
+	buff = NULL;
+	len = 0;
+	start = 0;
 }
 
 bufferStore::bufferStore(const bufferStore &a) {
-  lenAllocd = (a.getLen() > MIN_LEN) ? a.getLen() : MIN_LEN;
-  buff = new unsigned char [lenAllocd];
-  len = a.getLen();
-  for (long i=0; i<len; i++) buff[i] = a.getByte(i);
-  start = 0;
+	lenAllocd = (a.getLen() > MIN_LEN) ? a.getLen() : MIN_LEN;
+	buff = new unsigned char [lenAllocd];
+	len = a.getLen();
+	memcpy(buff, a.getString(0), len);
+	start = 0;
 }
 
 bufferStore::bufferStore(const unsigned char*_buff, long _len) {
-  lenAllocd = (_len > MIN_LEN) ? _len : MIN_LEN;
-  buff = new unsigned char [lenAllocd];
-  len = _len;
-  for (long i=0; i<len; i++) buff[i] = _buff[i];
-  start = 0;
+	lenAllocd = (_len > MIN_LEN) ? _len : MIN_LEN;
+	buff = new unsigned char [lenAllocd];
+	len = _len;
+	memcpy(buff, _buff, len);
+	start = 0;
 }
 
 void bufferStore::operator =(const bufferStore &a) {
-  checkAllocd(a.getLen());
-  len = a.getLen();
-  for (long i=0; i<len; i++) buff[i] = a.getByte(i);
-  start = 0;
+	checkAllocd(a.getLen());
+	len = a.getLen();
+	memcpy(buff, a.getString(0), len);
+	start = 0;
 }
 
 void bufferStore::init() {
-  start = 0;
-  len = 0;
+	start = 0;
+	len = 0;
 }
 
 void bufferStore::init(const unsigned char*_buff, long _len) {
-  checkAllocd(_len);
-  start = 0;
-  len = _len;
-  for (long i=0; i<len; i++) buff[i] = _buff[i];
+	checkAllocd(_len);
+	start = 0;
+	len = _len;
+	memcpy(buff, _buff, len);
 }
 
 bufferStore::~bufferStore() {
-  delete [] buff;
+	delete [] buff;
 }
 
 unsigned long bufferStore::getLen() const {
-  if (start > len) return 0;
-  return len - start;
+	return (start > len) ? 0 : len - start;
 }
 
 unsigned char bufferStore::getByte(long pos) const {
-  return buff[pos+start];
+	return buff[pos+start];
 }
 
 unsigned int bufferStore::getWord(long pos) const {
-  return buff[pos+start] + (buff[pos+start+1] << 8);
+	return buff[pos+start] + (buff[pos+start+1] << 8);
 }
 
 unsigned int bufferStore::getDWord(long pos) const {
-  return buff[pos+start] +
-    (buff[pos+start+1] << 8) +
-    (buff[pos+start+2] << 16) +
-    (buff[pos+start+3] << 24);
+	return buff[pos+start] +
+		(buff[pos+start+1] << 8) +
+		(buff[pos+start+2] << 16) +
+		(buff[pos+start+3] << 24);
 }
 
 const char* bufferStore::getString(long pos) const {
-  return (const char*)buff+pos+start;
+	return (const char*)buff+pos+start;
 }
 
 ostream &operator<<(ostream &s, const bufferStore &m) {
-  {
-    for (int i = m.start; i < m.len; i++)
-      s << hex << setw(2) << setfill('0') << (int)m.buff[i] << " ";
-  }
-  s << "(";
-  {
-    for (int i = m.start; i < m.len; i++) {
-      unsigned char c = m.buff[i];
-      if (c>=' ' && c <= 'z') s << c;
-    }
-  }
-  s<< ")";
-  return s;
+	{
+		for (int i = m.start; i < m.len; i++)
+		s << hex << setw(2) << setfill('0') << (int)m.buff[i] << " ";
+	}
+	s << "(";
+	{
+		for (int i = m.start; i < m.len; i++) {
+			unsigned char c = m.buff[i];
+			if (c>=' ' && c <= 'z') s << c;
+		}
+	}
+	s<< ")";
+	return s;
 }
 
 void bufferStore::discardFirstBytes(int n) {
-  start += n;
-  if (start > len) start = len;
+	start += n;
+	if (start > len) start = len;
 }
 
 void bufferStore::checkAllocd(long newLen) {
-  if (newLen >= lenAllocd) {
-    do {
-      if (lenAllocd < MIN_LEN)
-	lenAllocd = MIN_LEN;
-      else
-	lenAllocd *= 2;
-    } while (newLen >= lenAllocd);
-    unsigned char* newBuff = new unsigned char [lenAllocd];
-    for (int i=start; i<len; i++) newBuff[i] = buff[i];
-    delete [] buff;
-    buff = newBuff;
-  }
+	if (newLen >= lenAllocd) {
+		do {
+			lenAllocd = (lenAllocd < MIN_LEN)?MIN_LEN:(lenAllocd*2);
+		} while (newLen >= lenAllocd);
+		unsigned char* newBuff = new unsigned char [lenAllocd];
+		memcpy(&newBuff[start], &buff[start], len - start);
+		delete [] buff;
+		buff = newBuff;
+	}
 }
 
 void bufferStore::addByte(unsigned char cc) {
-  checkAllocd(len + 1);
-  buff[len++] = cc;
+	checkAllocd(len + 1);
+	buff[len++] = cc;
 }
 
 void bufferStore::addString(const char* s) {
-  checkAllocd(len + strlen(s));
-  for (int i=0; s[i]; i++) buff[len++] = s[i];
+	int l = strlen(s);
+	checkAllocd(len + l);
+	memcpy(&buff[len], s, l);
+	len += l;
 }
 
 void bufferStore::addStringT(const char* s) {
-  addString(s);
-  addByte(0);
+	addString(s);
+	addByte(0);
 }
 
 void bufferStore::addBuff(const bufferStore &s, long maxLen) {
-  checkAllocd(len + s.getLen());
-  for (unsigned long i=0; i < s.getLen() && (maxLen < 0 || i < (unsigned long)maxLen); i++) buff[len++] = s.getByte(i);
+	long l = s.getLen();
+	checkAllocd(len + l);
+	if ((maxLen >= 0) && (maxLen < l))
+		l = maxLen;
+	if (l > 0) {
+		memcpy(&buff[len], s.getString(0), l);
+		len += l;
+	}
 }
 
 void bufferStore::addWord(int a) {
-  checkAllocd(len + 2);
-  buff[len++] = a & 0xff;
-  buff[len++] = (a>>8) & 0xff;
+	checkAllocd(len + 2);
+	buff[len++] = a & 0xff;
+	buff[len++] = (a>>8) & 0xff;
 }
 
 void bufferStore::addDWord(long a) {
-  checkAllocd(len + 4);
-  buff[len++] = a & 0xff;
-  buff[len++] = (a>>8) & 0xff;
-  buff[len++] = (a>>16) & 0xff;
-  buff[len++] = (a>>24) & 0xff;  
+	checkAllocd(len + 4);
+	buff[len++] = a & 0xff;
+	buff[len++] = (a>>8) & 0xff;
+	buff[len++] = (a>>16) & 0xff;
+	buff[len++] = (a>>24) & 0xff;  
 }
-- 
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