First version.

This commit is contained in:
Behdad Esfahbod 2006-12-21 22:30:38 -05:00
commit f78e70c301
1 changed files with 116 additions and 0 deletions

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src/hb-types-private.cc Normal file
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#include <stdint.h>
/*
*
* The OpenType Font File
*
*/
/*
* Data Types:
*/
/* "All OpenType fonts use Motorola-style byte ordering (Big Endian)"
* So we define the following hb_be_* types as structs/unions, to
* disallow accidental access to them as an integer. */
typedef union {
uint8_t u8;
uint8_t v;
} hb_be_uint8_t;
typedef union {
int8_t i8;
int8_t v;
} hb_be_int8_t;
typedef union {
uint8_t u8x2[2];
uint16_t u16;
uint16_t v;
} hb_be_uint16_t;
typedef union {
uint8_t u8x2[2];
int16_t i16;
int16_t v;
} hb_be_int16_t;
typedef union {
uint8_t u8x4[4];
uint16_t u16x2[2];
uint32_t u32;
uint32_t v;
inline operator int () { return (u8x4[0]<<24)+(u8x4[1]<<16)+(u8x4[2]<<8)+u8x4[3]; }
} hb_be_uint32_t;
typedef union {
uint8_t u8x4[4];
uint16_t u16x2[2];
int32_t i32;
int32_t v;
} hb_be_int32_t;
typedef union {
uint8_t u8x8[8];
uint16_t u16x4[4];
uint32_t u32x2[2];
uint64_t u64;
uint64_t v;
} hb_be_uint64_t;
typedef union {
uint8_t u8x8[8];
uint16_t u16x4[4];
uint32_t u32x2[2];
int64_t i64;
int64_t v;
} hb_be_int64_t;
/* "The following data types are used in the OpenType font file." */
typedef hb_be_uint8_t HB_BYTE; /* 8-bit unsigned integer. */
typedef hb_be_int8_t HB_CHAR; /* 8-bit signed integer. */
typedef hb_be_uint16_t HB_USHORT; /* 16-bit unsigned integer. */
typedef hb_be_int16_t HB_SHORT; /* 16-bit signed integer. */
typedef hb_be_uint32_t HB_ULONG; /* 32-bit unsigned integer. */
typedef hb_be_int32_t HB_LONG; /* 32-bit signed integer. */
typedef hb_be_int32_t HB_Fixed; /* 32-bit signed fixed-point number
* (16.16) */
typedef struct _FUNIT HB_FUNIT; /* Smallest measurable distance
* in the em space. */
typedef HB_SHORT HB_FWORD; /* 16-bit signed integer (SHORT) that
* describes a quantity in FUnits. */
typedef HB_USHORT HB_UFWORD; /* 16-bit unsigned integer (USHORT)
* that describes a quantity in
* FUnits. */
typedef hb_be_int16_t HB_F2DOT14; /* 16-bit signed fixed number with the
* low 14 bits of fraction (2.14). */
typedef hb_be_int64_t HB_LONGDATETIME;/* Date represented in number of
* seconds since 12:00 midnight,
* January 1, 1904. The value is
* represented as a signed 64-bit
* integer. */
typedef hb_be_uint32_t HB_Tag; /* Array of four uint8s (length = 32
* bits) used to identify a script,
* language system, feature, or
* baseline */
typedef hb_be_uint16_t HB_GlyphID; /* Glyph index number, same as
* uint16(length = 16 bits) */
typedef hb_be_uint16_t HB_Offset; /* Offset to a table, same as uint16
* (length = 16 bits), NULL offset =
* 0x0000 */
#include <stdio.h>
int
main (void)
{
HB_Tag x = {{'a', 'b', 'c', 'd'}};
HB_ULONG y = x;
printf ("%d\n", x+0);
return 0;
}