Diff: stdImpl.cpp

Revision:

0:bbc0d658b7eb

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stdImpl.cpp	Tue Jan 18 16:39:49 2011 +0000
@@ -0,0 +1,141 @@
+/*
+ * COPYRIGHT AND PERMISSION NOTICE
+ * 
+ * Copyright (c) 2003 Embedded Unit Project
+ * 
+ * All rights reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining 
+ * a copy of this software and associated documentation files (the 
+ * "Software"), to deal in the Software without restriction, including 
+ * without limitation the rights to use, copy, modify, merge, publish, 
+ * distribute, and/or sell copies of the Software, and to permit persons 
+ * to whom the Software is furnished to do so, provided that the above 
+ * copyright notice(s) and this permission notice appear in all copies 
+ * of the Software and that both the above copyright notice(s) and this 
+ * permission notice appear in supporting documentation.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT 
+ * OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
+ * HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY 
+ * SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER 
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF 
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ * 
+ * Except as contained in this notice, the name of a copyright holder 
+ * shall not be used in advertising or otherwise to promote the sale, 
+ * use or other dealings in this Software without prior written 
+ * authorization of the copyright holder.
+ *
+ * $Id: stdImpl.c,v 1.3 2004/02/10 16:15:25 arms22 Exp $
+ */
+#include "stdImpl.h"
+
+char* stdimpl_strcpy(char *dst, const char *src)
+{
+    char *start = dst;
+    char c;
+    do {
+        c = *src;
+        *dst = c;
+        src++;
+        dst++;
+    } while (c);
+    return start;
+}
+
+char* stdimpl_strcat(char *dst, const char *src)
+{
+    char *start = dst;
+    char c;
+    do {
+        c = *dst;
+        dst++;
+    } while (c);
+    dst--;
+    do {
+        c = *src;
+        *dst = c;
+        src++;
+        dst++;
+    } while (c);
+    return start;
+}
+
+char* stdimpl_strncat(char *dst, const char *src,unsigned int count)
+{
+    char *start = dst;
+    char c;
+    do {
+        c = *dst;
+        dst++;
+    } while (c);
+    dst--;
+    if (count) {
+        do {
+            c = *src;
+            *dst = c;
+            src++;
+            dst++;
+            count--;
+        } while (c && count);
+        *dst = '\0';
+    }
+    return start;
+}
+
+int stdimpl_strlen(const char *str)
+{
+    const char *estr = str;
+    char c;
+    do {
+        c = *estr;
+        estr++;
+    } while (c);
+    return ((int)(estr - str - 1));
+}
+
+int stdimpl_strcmp(const char *s1, const char *s2)
+{
+    char c1,c2;
+    do {
+        c1 = *s1++;
+        c2 = *s2++;
+    } while ((c1) && (c2) && (c1==c2));
+    return c1 - c2;
+}
+
+static char* _xtoa(unsigned long v,char *string, int r, int is_neg)
+{
+    char *start = string;
+    char buf[33],*p;
+
+    p = buf;
+
+    do {
+        *p++ = "0123456789abcdef"[(v % r) & 0xf];
+    } while (v /= r);
+
+    if (is_neg) {
+        *p++ = '-';
+    }
+
+    do {
+        *string++ = *--p;
+    } while (buf != p);
+
+    *string = '\0';
+
+    return start;
+}
+
+char* stdimpl_itoa(int v,char *string,int r)
+{
+    if ((r == 10) && (v < 0)) {
+        return _xtoa((unsigned long)(-v), string, r, 1);
+    }
+    return _xtoa((unsigned long)(v), string, r, 0);
+}