251 lines
9.1 KiB
C
251 lines
9.1 KiB
C
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/*
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* Unicode helpers
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*/
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#if !defined(DUK_UNICODE_H_INCLUDED)
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#define DUK_UNICODE_H_INCLUDED
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/*
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* UTF-8 / XUTF-8 / CESU-8 constants
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*/
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#define DUK_UNICODE_MAX_XUTF8_LENGTH 7 /* up to 36 bit codepoints */
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#define DUK_UNICODE_MAX_XUTF8_BMP_LENGTH 3 /* all codepoints up to U+FFFF */
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#define DUK_UNICODE_MAX_CESU8_LENGTH 6 /* all codepoints up to U+10FFFF */
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#define DUK_UNICODE_MAX_CESU8_BMP_LENGTH 3 /* all codepoints up to U+FFFF */
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/*
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* Useful Unicode codepoints
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*
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* Integer constants must be signed to avoid unexpected coercions
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* in comparisons.
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*/
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#define DUK_UNICODE_CP_ZWNJ 0x200cL /* zero-width non-joiner */
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#define DUK_UNICODE_CP_ZWJ 0x200dL /* zero-width joiner */
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#define DUK_UNICODE_CP_REPLACEMENT_CHARACTER 0xfffdL /* http://en.wikipedia.org/wiki/Replacement_character#Replacement_character */
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/*
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* ASCII character constants
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*
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* C character literals like 'x' have a platform specific value and do
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* not match ASCII (UTF-8) values on e.g. EBCDIC platforms. So, use
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* these (admittedly awkward) constants instead. These constants must
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* also have signed values to avoid unexpected coercions in comparisons.
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*
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* http://en.wikipedia.org/wiki/ASCII
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*/
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#define DUK_ASC_NUL 0x00
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#define DUK_ASC_SOH 0x01
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#define DUK_ASC_STX 0x02
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#define DUK_ASC_ETX 0x03
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#define DUK_ASC_EOT 0x04
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#define DUK_ASC_ENQ 0x05
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#define DUK_ASC_ACK 0x06
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#define DUK_ASC_BEL 0x07
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#define DUK_ASC_BS 0x08
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#define DUK_ASC_HT 0x09
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#define DUK_ASC_LF 0x0a
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#define DUK_ASC_VT 0x0b
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#define DUK_ASC_FF 0x0c
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#define DUK_ASC_CR 0x0d
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#define DUK_ASC_SO 0x0e
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#define DUK_ASC_SI 0x0f
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#define DUK_ASC_DLE 0x10
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#define DUK_ASC_DC1 0x11
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#define DUK_ASC_DC2 0x12
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#define DUK_ASC_DC3 0x13
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#define DUK_ASC_DC4 0x14
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#define DUK_ASC_NAK 0x15
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#define DUK_ASC_SYN 0x16
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#define DUK_ASC_ETB 0x17
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#define DUK_ASC_CAN 0x18
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#define DUK_ASC_EM 0x19
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#define DUK_ASC_SUB 0x1a
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#define DUK_ASC_ESC 0x1b
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#define DUK_ASC_FS 0x1c
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#define DUK_ASC_GS 0x1d
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#define DUK_ASC_RS 0x1e
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#define DUK_ASC_US 0x1f
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#define DUK_ASC_SPACE 0x20
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#define DUK_ASC_EXCLAMATION 0x21
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#define DUK_ASC_DOUBLEQUOTE 0x22
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#define DUK_ASC_HASH 0x23
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#define DUK_ASC_DOLLAR 0x24
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#define DUK_ASC_PERCENT 0x25
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#define DUK_ASC_AMP 0x26
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#define DUK_ASC_SINGLEQUOTE 0x27
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#define DUK_ASC_LPAREN 0x28
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#define DUK_ASC_RPAREN 0x29
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#define DUK_ASC_STAR 0x2a
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#define DUK_ASC_PLUS 0x2b
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#define DUK_ASC_COMMA 0x2c
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#define DUK_ASC_MINUS 0x2d
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#define DUK_ASC_PERIOD 0x2e
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#define DUK_ASC_SLASH 0x2f
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#define DUK_ASC_0 0x30
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#define DUK_ASC_1 0x31
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#define DUK_ASC_2 0x32
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#define DUK_ASC_3 0x33
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#define DUK_ASC_4 0x34
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#define DUK_ASC_5 0x35
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#define DUK_ASC_6 0x36
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#define DUK_ASC_7 0x37
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#define DUK_ASC_8 0x38
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#define DUK_ASC_9 0x39
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#define DUK_ASC_COLON 0x3a
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#define DUK_ASC_SEMICOLON 0x3b
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#define DUK_ASC_LANGLE 0x3c
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#define DUK_ASC_EQUALS 0x3d
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#define DUK_ASC_RANGLE 0x3e
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#define DUK_ASC_QUESTION 0x3f
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#define DUK_ASC_ATSIGN 0x40
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#define DUK_ASC_UC_A 0x41
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#define DUK_ASC_UC_B 0x42
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#define DUK_ASC_UC_C 0x43
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#define DUK_ASC_UC_D 0x44
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#define DUK_ASC_UC_E 0x45
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#define DUK_ASC_UC_F 0x46
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#define DUK_ASC_UC_G 0x47
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#define DUK_ASC_UC_H 0x48
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#define DUK_ASC_UC_I 0x49
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#define DUK_ASC_UC_J 0x4a
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#define DUK_ASC_UC_K 0x4b
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#define DUK_ASC_UC_L 0x4c
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#define DUK_ASC_UC_M 0x4d
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#define DUK_ASC_UC_N 0x4e
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#define DUK_ASC_UC_O 0x4f
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#define DUK_ASC_UC_P 0x50
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#define DUK_ASC_UC_Q 0x51
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#define DUK_ASC_UC_R 0x52
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#define DUK_ASC_UC_S 0x53
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#define DUK_ASC_UC_T 0x54
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#define DUK_ASC_UC_U 0x55
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#define DUK_ASC_UC_V 0x56
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#define DUK_ASC_UC_W 0x57
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#define DUK_ASC_UC_X 0x58
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#define DUK_ASC_UC_Y 0x59
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#define DUK_ASC_UC_Z 0x5a
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#define DUK_ASC_LBRACKET 0x5b
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#define DUK_ASC_BACKSLASH 0x5c
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#define DUK_ASC_RBRACKET 0x5d
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#define DUK_ASC_CARET 0x5e
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#define DUK_ASC_UNDERSCORE 0x5f
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#define DUK_ASC_GRAVE 0x60
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#define DUK_ASC_LC_A 0x61
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#define DUK_ASC_LC_B 0x62
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#define DUK_ASC_LC_C 0x63
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#define DUK_ASC_LC_D 0x64
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#define DUK_ASC_LC_E 0x65
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#define DUK_ASC_LC_F 0x66
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#define DUK_ASC_LC_G 0x67
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#define DUK_ASC_LC_H 0x68
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#define DUK_ASC_LC_I 0x69
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#define DUK_ASC_LC_J 0x6a
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#define DUK_ASC_LC_K 0x6b
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#define DUK_ASC_LC_L 0x6c
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#define DUK_ASC_LC_M 0x6d
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#define DUK_ASC_LC_N 0x6e
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#define DUK_ASC_LC_O 0x6f
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#define DUK_ASC_LC_P 0x70
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#define DUK_ASC_LC_Q 0x71
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#define DUK_ASC_LC_R 0x72
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#define DUK_ASC_LC_S 0x73
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#define DUK_ASC_LC_T 0x74
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#define DUK_ASC_LC_U 0x75
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#define DUK_ASC_LC_V 0x76
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#define DUK_ASC_LC_W 0x77
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#define DUK_ASC_LC_X 0x78
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#define DUK_ASC_LC_Y 0x79
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#define DUK_ASC_LC_Z 0x7a
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#define DUK_ASC_LCURLY 0x7b
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#define DUK_ASC_PIPE 0x7c
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#define DUK_ASC_RCURLY 0x7d
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#define DUK_ASC_TILDE 0x7e
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#define DUK_ASC_DEL 0x7f
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/*
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* Miscellaneous
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*/
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/* Uppercase A is 0x41, lowercase a is 0x61; OR 0x20 to convert uppercase
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* to lowercase.
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*/
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#define DUK_LOWERCASE_CHAR_ASCII(x) ((x) | 0x20)
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/*
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* Unicode tables
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*/
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#if defined(DUK_USE_SOURCE_NONBMP)
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#include "duk_unicode_ids_noa.h"
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#else
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#include "duk_unicode_ids_noabmp.h"
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#endif
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#if defined(DUK_USE_SOURCE_NONBMP)
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#include "duk_unicode_ids_m_let_noa.h"
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#else
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#include "duk_unicode_ids_m_let_noabmp.h"
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#endif
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#if defined(DUK_USE_SOURCE_NONBMP)
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#include "duk_unicode_idp_m_ids_noa.h"
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#else
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#include "duk_unicode_idp_m_ids_noabmp.h"
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#endif
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#include "duk_unicode_caseconv.h"
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#if defined(DUK_USE_REGEXP_CANON_WORKAROUND)
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#include "duk_unicode_re_canon_lookup.h"
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#endif
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#if defined(DUK_USE_REGEXP_CANON_BITMAP)
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#include "duk_unicode_re_canon_bitmap.h"
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#endif
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/*
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* Extern
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*/
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/* duk_unicode_support.c */
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#if !defined(DUK_SINGLE_FILE)
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DUK_INTERNAL_DECL const duk_uint8_t duk_unicode_xutf8_markers[7];
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DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_digit[2];
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DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_white[22];
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DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_wordchar[8];
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DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_not_digit[4];
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DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_not_white[24];
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DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_not_wordchar[10];
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DUK_INTERNAL_DECL const duk_int8_t duk_is_idchar_tab[128];
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#endif /* !DUK_SINGLE_FILE */
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/*
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* Prototypes
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*/
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DUK_INTERNAL_DECL duk_small_int_t duk_unicode_get_xutf8_length(duk_ucodepoint_t cp);
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#if defined(DUK_USE_ASSERTIONS)
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DUK_INTERNAL_DECL duk_small_int_t duk_unicode_get_cesu8_length(duk_ucodepoint_t cp);
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#endif
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DUK_INTERNAL_DECL duk_small_int_t duk_unicode_encode_xutf8(duk_ucodepoint_t cp, duk_uint8_t *out);
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DUK_INTERNAL_DECL duk_small_int_t duk_unicode_encode_cesu8(duk_ucodepoint_t cp, duk_uint8_t *out);
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DUK_INTERNAL_DECL duk_small_int_t duk_unicode_decode_xutf8(duk_hthread *thr, const duk_uint8_t **ptr, const duk_uint8_t *ptr_start, const duk_uint8_t *ptr_end, duk_ucodepoint_t *out_cp);
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DUK_INTERNAL_DECL duk_ucodepoint_t duk_unicode_decode_xutf8_checked(duk_hthread *thr, const duk_uint8_t **ptr, const duk_uint8_t *ptr_start, const duk_uint8_t *ptr_end);
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DUK_INTERNAL_DECL duk_size_t duk_unicode_unvalidated_utf8_length(const duk_uint8_t *data, duk_size_t blen);
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DUK_INTERNAL_DECL duk_bool_t duk_unicode_is_utf8_compatible(const duk_uint8_t *buf, duk_size_t len);
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DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_whitespace(duk_codepoint_t cp);
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DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_line_terminator(duk_codepoint_t cp);
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DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_identifier_start(duk_codepoint_t cp);
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DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_identifier_part(duk_codepoint_t cp);
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DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_letter(duk_codepoint_t cp);
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DUK_INTERNAL_DECL void duk_unicode_case_convert_string(duk_hthread *thr, duk_bool_t uppercase);
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#if defined(DUK_USE_REGEXP_SUPPORT)
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DUK_INTERNAL_DECL duk_codepoint_t duk_unicode_re_canonicalize_char(duk_hthread *thr, duk_codepoint_t cp);
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DUK_INTERNAL_DECL duk_small_int_t duk_unicode_re_is_wordchar(duk_codepoint_t cp);
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#endif
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#endif /* DUK_UNICODE_H_INCLUDED */
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