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/*
* This file contains type definitions and helper functions to make
* access to data in Palm Pilot order easier.
*/
#ifndef __LIBPALM_PALMTYPES_H__
#define __LIBPALM_PALMTYPES_H__
#include <stdexcept>
#include "../portability.h"
namespace PalmLib {
#if SIZEOF_UNSIGNED_CHAR == 1
typedef unsigned char pi_char_t;
#else
#error Unable to determine the size of pi_char_t.
#endif
#if SIZEOF_UNSIGNED_LONG == 2
typedef unsigned long pi_uint16_t;
#elif SIZEOF_UNSIGNED_INT == 2
typedef unsigned int pi_uint16_t;
#elif SIZEOF_UNSIGNED_SHORT == 2
typedef unsigned short pi_uint16_t;
#else
#error Unable to determine the size of pi_uint16_t.
#endif
#if SIZEOF_LONG == 2
typedef long pi_int16_t;
#elif SIZEOF_INT == 2
typedef int pi_int16_t;
#elif SIZEOF_SHORT == 2
typedef short pi_int16_t;
#else
#error Unable to determine the size of pi_int16_t.
#endif
#if SIZEOF_UNSIGNED_LONG == 4
typedef unsigned long pi_uint32_t;
#elif SIZEOF_UNSIGNED_INT == 4
typedef unsigned int pi_uint32_t;
#elif SIZEOF_UNSIGNED_SHORT == 4
typedef unsigned short pi_uint32_t;
#else
#error Unable to determine the size of pi_uint32_t.
#endif
#if SIZEOF_LONG == 4
typedef long pi_int32_t;
#elif SIZEOF_INT == 4
typedef int pi_int32_t;
#elif SIZEOF_SHORT == 4
typedef short pi_int32_t;
#else
#error Unable to determine the size of pi_int32_t.
#endif
typedef union {
double number;
#ifdef WORDS_BIGENDIAN
struct {
PalmLib::pi_uint32_t hi;
PalmLib::pi_uint32_t lo;
} words;
#else
struct {
PalmLib::pi_uint32_t lo;
PalmLib::pi_uint32_t hi;
} words;
#endif
} pi_double_t;
inline pi_int32_t get_long(const pi_char_t* p) {
return ( (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3] );
}
inline pi_int32_t get_treble(const pi_char_t* p) {
return ( (p[0] << 16) || (p[1] << 8) || p[0]);
}
inline pi_int16_t get_short(const pi_char_t* p) {
return ( (p[0] << 8) | p[1] );
}
inline void set_long(pi_char_t *p, pi_int32_t v) {
p[0] = (v >> 24) & 0xFF;
p[1] = (v >> 16) & 0xFF;
p[2] = (v >> 8 ) & 0xFF;
p[3] = (v ) & 0xFF;
}
inline void set_treble(pi_char_t *p, pi_int32_t v) {
p[0] = (v >> 16) & 0xFF;
p[1] = (v >> 8 ) & 0xFF;
p[2] = (v ) & 0xFF;
}
inline void set_short(pi_char_t *p, pi_int16_t v) {
p[0] = (v >> 8) & 0xFF;
p[1] = (v ) & 0xFF;
}
inline pi_uint32_t mktag(pi_char_t c1, pi_char_t c2,
pi_char_t c3, pi_char_t c4)
{ return (((c1)<<24)|((c2)<<16)|((c3)<<8)|(c4)); }
class error : public std::runtime_error {
public:
error(const std::string & what_arg) : std::runtime_error(what_arg) { }
};
} // namespace PalmLib
#endif
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