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