skindle 6 with Topaz support

skindle/cbuf.c

@@ -0,0 +1,85 @@
+/*
+   Copyright 2010 BartSimpson aka skindle
+   
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+#include <stdlib.h>
+#include <string.h>
+#include "cbuf.h"
+
+cbuf *b_new(unsigned int size) {
+   cbuf *b = (cbuf*)calloc(sizeof(cbuf), 1);
+   if (b) {
+      b->buf = (unsigned char *)malloc(size);
+      b->size = b->buf ? size : 0;
+   }
+   return b;
+}
+
+void b_free(cbuf *b) {
+   if (b) {
+      free(b->buf);
+      free(b);
+   }
+}
+
+void b_add_byte(cbuf *b, unsigned char ch) {
+   if (b == NULL) return;
+   if (b->idx == b->size) {
+      unsigned char *p = realloc(b->buf, b->size * 2);
+      if (p) {
+         b->buf = p;
+         b->size = b->size * 2;
+      }
+   }
+   if (b->idx < b->size) {
+      b->buf[b->idx++] = ch;
+   }
+}
+
+void b_add_buf(cbuf *b, unsigned char *buf, unsigned int len) {
+   if (b == NULL) return;
+   unsigned int new_sz = b->idx + len;
+   while (b->size < new_sz) {
+      unsigned char *p = realloc(b->buf, b->size * 2);
+      if (p) {
+         b->buf = p;
+         b->size = b->size * 2;
+      }
+      else break;
+   }
+   if ((b->idx + len) <= b->size) {
+      memcpy(b->buf + b->idx, buf, len);
+      b->idx += len;
+   }
+}
+
+void b_add_str(cbuf *b, const char *buf) {
+   if (b == NULL) return;
+   unsigned int len = strlen(buf);
+   unsigned int new_sz = b->idx + len;
+   while (b->size < new_sz) {
+      unsigned char *p = realloc(b->buf, b->size * 2);
+      if (p) {
+         b->buf = p;
+         b->size = b->size * 2;
+      }
+      else break;
+   }
+   if ((b->idx + len) <= b->size) {
+      memcpy(b->buf + b->idx, buf, len);
+      b->idx += len;
+   }
+}
+