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-rw-r--r--depends/classparser/src/membuffer.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/depends/classparser/src/membuffer.h b/depends/classparser/src/membuffer.h
new file mode 100644
index 00000000..2ea3a69b
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+++ b/depends/classparser/src/membuffer.h
@@ -0,0 +1,64 @@
+#pragma once
+#include <stdint.h>
+#include <string>
+#include <vector>
+#include <exception>
+#include "javaendian.h"
+
+namespace util
+{
+ class membuffer
+ {
+ public:
+ membuffer(char * buffer, std::size_t size)
+ {
+ current = start = buffer;
+ end = start + size;
+ }
+ ~membuffer()
+ {
+ // maybe? possibly? left out to avoid confusion. for now.
+ //delete start;
+ }
+ /**
+ * Read some value. That's all ;)
+ */
+ template <class T>
+ void read(T& val)
+ {
+ val = *(T *)current;
+ current += sizeof(T);
+ }
+ /**
+ * Read a big-endian number
+ * valid for 2-byte, 4-byte and 8-byte variables
+ */
+ template <class T>
+ void read_be(T& val)
+ {
+ val = util::bigswap(*(T *)current);
+ current += sizeof(T);
+ }
+ /**
+ * Read a string in the format:
+ * 2B length (big endian, unsigned)
+ * length bytes data
+ */
+ void read_jstr(std::string & str)
+ {
+ uint16_t length = 0;
+ read_be(length);
+ str.append(current,length);
+ current += length;
+ }
+ /**
+ * Skip N bytes
+ */
+ void skip (std::size_t N)
+ {
+ current += N;
+ }
+ private:
+ char * start, *end, *current;
+ };
+}