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@@ -0,0 +1,26 @@
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+#ifndef tool_byte_h
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+#define tool_byte_h
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+#include <vector>
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+#include <string>
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+
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+struct tool_byte{
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+
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+ template<class T>
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+ static void memcpy_int(std::vector<char>& msg, T val)
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+ {
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+ for(int i = sizeof(T) - 1; i>=0; --i)
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+ {
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+ msg.push_back((val>>(i*8))&0xff);
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+ }
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+ }
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+
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+ static std::string to_cardid(const int ctype, const int cid)
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+ {
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+ char sz[20] = {0};
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+ sprintf(sz, "%.3d%.10d", ctype, cid);
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+
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+ return std::string(sz);
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+ }
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+};
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+
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+#endif
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