111 lines
2.9 KiB
C++
111 lines
2.9 KiB
C++
#ifndef CPPMARSHAL_H
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#define CPPMARSHAL_H
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// cppmarshal.h
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// 10/12/2014 jichi
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//
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// Functions are by default big-endian, the same as memory layout.
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#include "cpputil/cppcstring.h"
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#include "cpputil/cpptype.h"
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#include <cstring>
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/* Read */
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// Read number
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template <typename valT, typename byteT>
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inline const byteT *cpp_marshal_getval(const byteT *p, valT *v)
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{ *v = *reinterpret_cast<const valT *>(p); return p + sizeof(valT); }
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// Read pointer
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template <typename ptrT, typename byteT> \
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inline const byteT *cpp_marshal_getptr(const byteT *p, ptrT v)
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{ return cpp_marshal_getval<unsigned long>(p, reinterpret_cast<unsigned long *>(v)); }
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// Read string
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template <typename charT, typename byteT>
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inline const byteT *cpp_marshal_getstr(const byteT *p, charT *s)
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{
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size_t n = cpp_basic_strlen(p);
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::memcpy(s, p, n + 1); // including '\0'
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return p + n + 1;
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}
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template <typename charT, typename byteT>
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inline const byteT *cpp_marshal_getnstr(const byteT *p, charT *s, size_t n)
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{
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if (n = cpp_basic_strnlen(p, n))
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::memcpy(s, p, n); // including '\0'
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s[n] = 0;
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return p + n + 1;
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}
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/* Write */
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// Write number
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template <typename valT, typename byteT>
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inline byteT *cpp_marshal_putval(byteT *p, valT v)
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{ *reinterpret_cast<valT *>(p) = v; return p + sizeof(valT); }
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// Write pointer
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template <typename ptrT, typename byteT> \
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inline byteT *cpp_marshal_putptr(byteT *p, ptrT v)
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{ return cpp_marshal_putval<unsigned long>(p, reinterpret_cast<unsigned long>(v)); }
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// Write string
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template <typename charT, typename byteT>
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inline byteT *cpp_marshal_putstr(byteT *p, charT *s)
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{
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size_t n = cpp_basic_strlen(s);
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::memcpy(p, s, n + 1); // including '\0'
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return p + n + 1;
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}
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template <typename charT, typename byteT>
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inline byteT *cpp_marshal_putstr(byteT *p, charT *s, size_t n)
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{
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if (n = cpp_basic_strnlen(s, n))
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::memcpy(p, s, n); // including '\0'
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s[n] = 0;
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return p + n + 1;
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}
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/* Expansion */
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#define CPP_DECLARE_MARSHAL_GETVAL(type) \
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template <typename byteT> \
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inline const byteT *cpp_marshal_get##type(const byteT *p, cpp_##type *v) { return cpp_marshal_getval(p, v); }
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#define CPP_DECLARE_MARSHAL_PUTVAL(type) \
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template <typename byteT> \
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inline byteT *cpp_marshal_put##type(byteT *p, cpp_##type v) { return cpp_marshal_putval(p, v); }
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CPP_DECLARE_MARSHAL_PUTVAL(float)
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CPP_DECLARE_MARSHAL_PUTVAL(double)
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CPP_DECLARE_MARSHAL_GETVAL(float)
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CPP_DECLARE_MARSHAL_GETVAL(double)
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CPP_DECLARE_MARSHAL_GETVAL(int)
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CPP_DECLARE_MARSHAL_GETVAL(int8)
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CPP_DECLARE_MARSHAL_GETVAL(int32)
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CPP_DECLARE_MARSHAL_GETVAL(int64)
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CPP_DECLARE_MARSHAL_GETVAL(uint)
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CPP_DECLARE_MARSHAL_GETVAL(uint8)
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CPP_DECLARE_MARSHAL_GETVAL(uint32)
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CPP_DECLARE_MARSHAL_GETVAL(uint64)
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CPP_DECLARE_MARSHAL_PUTVAL(int)
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CPP_DECLARE_MARSHAL_PUTVAL(int8)
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CPP_DECLARE_MARSHAL_PUTVAL(int32)
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CPP_DECLARE_MARSHAL_PUTVAL(int64)
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CPP_DECLARE_MARSHAL_PUTVAL(uint)
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CPP_DECLARE_MARSHAL_PUTVAL(uint8)
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CPP_DECLARE_MARSHAL_PUTVAL(uint32)
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CPP_DECLARE_MARSHAL_PUTVAL(uint64)
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#endif // CPPMARSHAL_H
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