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3a3bda73dd
* transcode.c (transcoding): added a pointer to function to flush. * transcode.c (transcode_loop): do not use string internal. [ruby-dev:32512] * transcode.c (str_transcode): allow Encoding objects. * transcode_data.h (BYTE_LOOKUP): use actual struct name. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14176 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
39 lines
1.8 KiB
C
39 lines
1.8 KiB
C
typedef unsigned char base_element;
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typedef struct byte_lookup {
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const base_element *base;
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const struct byte_lookup *const *info;
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} BYTE_LOOKUP;
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#ifdef TRANSCODE_DATA
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/* data file needs to treat this as a pointer, to remove warnings */
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#define PType (const BYTE_LOOKUP *)
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#else
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/* in code, this is treated as just an integer */
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#define PType (int)
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#endif
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#define NOMAP (PType 0x01) /* single byte direct map */
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#define ONEbt (0x02) /* one byte payload */
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#define TWObt (0x03) /* two bytes payload */
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#define THREEbt (0x05) /* three bytes payload */
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#define FOURbt (0x06) /* four bytes payload, UTF-8 only, macros start at getBT0 */
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#define ILLEGAL (PType 0x07) /* illegal byte sequence */
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#define UNDEF (PType 0x09) /* legal but undefined */
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#define ZERObt (PType 0x0A) /* zero bytes of payload, i.e. remove */
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#define output1(b1) ((const BYTE_LOOKUP *)((((unsigned char)(b1))<<8)|ONEbt))
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#define output2(b1,b2) ((const BYTE_LOOKUP *)((((unsigned char)(b1))<<8)|(((unsigned char)(b2))<<16)|TWObt))
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#define output3(b1,b2,b3) ((const BYTE_LOOKUP *)((((unsigned char)(b1))<<8)|(((unsigned char)(b2))<<16)|(((unsigned char)(b3))<<24)|THREEbt))
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#define output4(b0,b1,b2,b3) ((const BYTE_LOOKUP *)((((unsigned char)(b1))<< 8)|(((unsigned char)(b2))<<16)|(((unsigned char)(b3))<<24)|((((unsigned char)(b0))&0x07)<<5)|FOURbt))
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#define getBT1(a) (((a)>> 8)&0xFF)
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#define getBT2(a) (((a)>>16)&0xFF)
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#define getBT3(a) (((a)>>24)&0xFF)
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#define getBT0(a) ((((a)>> 5)&0x07)|0xF0) /* for UTF-8 only!!! */
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/* do we need these??? maybe not, can be done with simple tables */
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#define ONETRAIL /* legal but undefined if one more trailing UTF-8 */
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#define TWOTRAIL /* legal but undefined if two more trailing UTF-8 */
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#define THREETRAIL /* legal but undefined if three more trailing UTF-8 */
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