add lost files

lib_acl_cpp/src/stdlib/bitmap.cpp

@@ -0,0 +1,117 @@
+#include "acl_stdafx.hpp"
+#ifndef ACL_PREPARE_COMPILE
+#include "acl_cpp/stdlib/bitmap.hpp"
+#endif
+#include "acl_cpp/stdlib/bitmap.hpp"
+
+/**
+ * @author wanghaibin@qiyi.com
+ * @date   2017-08-16
+ */
+namespace acl {
+
+bitmap::bitmap(const void* buf, size_t len)
+: size_(len)
+, count_(0)
+{
+	assert(len > 0);
+
+	bmp_ = new unsigned char[(len + 7) / 8];
+	memcpy(bmp_, buf, (len + 7) / 8);
+	recount();
+}
+
+bitmap::bitmap(size_t len)
+: size_(len)
+, count_(0)
+{
+	assert(len > 0);
+
+	bmp_ = new unsigned char[(len + 7) / 8];
+	memset(bmp_, 0, (len + 7) / 8);
+}
+
+bitmap::~bitmap(void)
+{
+	delete[] bmp_;
+}
+
+bool bitmap::isset(size_t n)
+{
+	if (n < size_)
+		return (bmp_[n / 8] >> n % 8) & 1;
+	else
+		return false;
+}
+
+bool bitmap::set(size_t n)
+{
+	if (n < size_ && !isset(n)) {
+		unsigned char t = 1 << n % 8;
+		bmp_[n / 8] |= t;
+		count_++;
+		return true;
+	} else
+		return false;
+}
+
+bool bitmap::unset(size_t n)
+{
+	if (isset(n)) {
+		unsigned char t = 1 << n % 8;
+		bmp_[n / 8] &= ~t;
+		count_--;
+		return true;
+	} else
+		return false;
+}
+
+size_t bitmap::tobuf(void* buf, size_t len)
+{
+	if (len >= (size_ + 7) / 8) {
+		memcpy(buf, bmp_, (size_ + 7) / 8);
+		return size_;
+	}
+	return size_;
+}
+
+bool bitmap::frombuf(const void* buf, size_t len)
+{
+	if (len >= (size_ + 7) / 8) {
+		memcpy(bmp_, buf, (size_ + 7) / 8);
+		recount();
+		return true;
+	}
+	return false;
+}
+
+void bitmap::reset(void)
+{
+	memset(bmp_, 0, (size_ + 7) / 8);
+}
+
+size_t bitmap::size(void)
+{
+	return size_;
+}
+
+size_t bitmap::count(void)
+{
+	return count_;
+}
+
+bool bitmap::full(void)
+{
+	return size_ == count_;
+}
+
+void bitmap::recount(void)
+{
+	count_ = 0;
+	for (size_t i = 0; i < size_; ++i) {
+		if ((bmp_[i / 8] >> i % 8) & 1)
+			count_++;
+	}
+}
+
+} // namespace acl