python/Objects/unicodectype.c at master · java66liu/python · GitHub

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Unicode character type helpers.

Written by Marc-Andre Lemburg (mal@lemburg.com).

Modified for Python 2.0 by Fredrik Lundh (fredrik@pythonware.com)

#include "Python.h"

#include "unicodeobject.h"

#define ALPHA_MASK 0x01

#define DECIMAL_MASK 0x02

#define DIGIT_MASK 0x04

#define LOWER_MASK 0x08

#define LINEBREAK_MASK 0x10

#define SPACE_MASK 0x20

#define TITLE_MASK 0x40

#define UPPER_MASK 0x80

#define NODELTA_MASK 0x100

typedef struct {

const Py_UNICODE upper;

const Py_UNICODE lower;

const Py_UNICODE title;

const unsigned char decimal;

const unsigned char digit;

const unsigned short flags;

} _PyUnicode_TypeRecord;

#include "unicodetype_db.h"

static const _PyUnicode_TypeRecord *

gettyperecord(Py_UNICODE code)

{

int index;

#ifdef Py_UNICODE_WIDE

if (code >= 0x110000)

index = 0;

else

#endif

{

index = index1[(code>>SHIFT)];

index = index2[(index<<SHIFT)+(code&((1<<SHIFT)-1))];

}

return &_PyUnicode_TypeRecords[index];

}

/* Returns 1 for Unicode characters having the category 'Zl', 'Zp' or

type 'B', 0 otherwise. */

int _PyUnicode_IsLinebreak(register const Py_UNICODE ch)

{

switch (ch) {

case 0x000A: /* LINE FEED */

case 0x000D: /* CARRIAGE RETURN */

case 0x001C: /* FILE SEPARATOR */

case 0x001D: /* GROUP SEPARATOR */

case 0x001E: /* RECORD SEPARATOR */

case 0x0085: /* NEXT LINE */

case 0x2028: /* LINE SEPARATOR */

case 0x2029: /* PARAGRAPH SEPARATOR */

return 1;

default:

return 0;

}

/* Returns the titlecase Unicode characters corresponding to ch or just

ch if no titlecase mapping is known. */

Py_UNICODE _PyUnicode_ToTitlecase(register Py_UNICODE ch)

{

const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);

int delta;

if (ctype->title)

delta = ctype->title;

else

delta = ctype->upper;

if (ctype->flags & NODELTA_MASK)

return delta;

if (delta >= 32768)

delta -= 65536;

return ch + delta;

}

/* Returns 1 for Unicode characters having the category 'Lt', 0

otherwise. */

int _PyUnicode_IsTitlecase(Py_UNICODE ch)

{

const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);

return (ctype->flags & TITLE_MASK) != 0;

}

/* Returns the integer decimal (0-9) for Unicode characters having

this property, -1 otherwise. */

int _PyUnicode_ToDecimalDigit(Py_UNICODE ch)

{

const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);

return (ctype->flags & DECIMAL_MASK) ? ctype->decimal : -1;

}

int _PyUnicode_IsDecimalDigit(Py_UNICODE ch)

{

if (_PyUnicode_ToDecimalDigit(ch) < 0)

return 0;

return 1;

}

/* Returns the integer digit (0-9) for Unicode characters having

this property, -1 otherwise. */

int _PyUnicode_ToDigit(Py_UNICODE ch)

{

const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);

return (ctype->flags & DIGIT_MASK) ? ctype->digit : -1;

}

int _PyUnicode_IsDigit(Py_UNICODE ch)

{

if (_PyUnicode_ToDigit(ch) < 0)

return 0;

return 1;

}

/* Returns the numeric value as double for Unicode characters having

this property, -1.0 otherwise. */

/* TODO: replace with unicodetype_db.h table */

double _PyUnicode_ToNumeric(Py_UNICODE ch)

{

switch (ch) {

case 0x0F33:

return (double) -1 / 2;

case 0x17F0:

case 0x3007:

#ifdef Py_UNICODE_WIDE

case 0x1018A:

#endif

return (double) 0;

case 0x09F4:

case 0x17F1:

case 0x215F:

case 0x2160:

case 0x2170:

case 0x3021:

case 0x3192:

case 0x3220:

case 0x3280:

#ifdef Py_UNICODE_WIDE

case 0x10107:

case 0x10142:

case 0x10158:

case 0x10159:

case 0x1015A:

case 0x10320:

case 0x103D1:

#endif

return (double) 1;

case 0x00BD:

case 0x0F2A:

case 0x2CFD:

#ifdef Py_UNICODE_WIDE

case 0x10141:

case 0x10175:

case 0x10176:

#endif

return (double) 1 / 2;

case 0x2153:

return (double) 1 / 3;

case 0x00BC:

#ifdef Py_UNICODE_WIDE

case 0x10140:

#endif

return (double) 1 / 4;

case 0x2155:

return (double) 1 / 5;

case 0x2159:

return (double) 1 / 6;

case 0x215B:

return (double) 1 / 8;

case 0x0BF0:

case 0x1372:

case 0x2169:

case 0x2179:

case 0x2469:

case 0x247D:

case 0x2491:

case 0x24FE:

case 0x277F:

case 0x2789:

case 0x2793:

case 0x3038:

case 0x3229:

case 0x3289:

#ifdef Py_UNICODE_WIDE

case 0x10110:

case 0x10149:

case 0x10150:

case 0x10157:

case 0x10160:

case 0x10161:

case 0x10162:

case 0x10163:

case 0x10164:

case 0x10322:

case 0x103D3:

case 0x10A44:

#endif

return (double) 10;

case 0x0BF1:

case 0x137B:

case 0x216D:

case 0x217D:

#ifdef Py_UNICODE_WIDE

case 0x10119:

case 0x1014B:

case 0x10152:

case 0x1016A:

case 0x103D5:

case 0x10A46:

#endif

return (double) 100;

case 0x0BF2:

case 0x216F:

case 0x217F:

case 0x2180:

#ifdef Py_UNICODE_WIDE

case 0x10122:

case 0x1014D:

case 0x10154:

case 0x10171:

case 0x10A47:

#endif

return (double) 1000;

case 0x137C:

case 0x2182:

#ifdef Py_UNICODE_WIDE

case 0x1012B:

case 0x10155:

#endif

return (double) 10000;

case 0x216A:

case 0x217A:

case 0x246A:

case 0x247E:

case 0x2492:

case 0x24EB:

return (double) 11;

case 0x0F2F:

return (double) 11 / 2;

case 0x216B:

case 0x217B:

case 0x246B:

case 0x247F:

case 0x2493:

case 0x24EC:

return (double) 12;

case 0x246C:

case 0x2480:

case 0x2494:

case 0x24ED:

return (double) 13;

case 0x0F30:

return (double) 13 / 2;

case 0x246D:

case 0x2481:

case 0x2495:

case 0x24EE:

return (double) 14;

case 0x246E:

case 0x2482:

case 0x2496:

case 0x24EF:

return (double) 15;

case 0x0F31:

return (double) 15 / 2;

case 0x09F9:

case 0x246F:

case 0x2483:

case 0x2497:

case 0x24F0:

return (double) 16;

case 0x16EE:

case 0x2470:

case 0x2484:

case 0x2498:

case 0x24F1:

return (double) 17;

case 0x0F32:

return (double) 17 / 2;

case 0x16EF:

case 0x2471:

case 0x2485:

case 0x2499:

case 0x24F2:

return (double) 18;

case 0x16F0:

case 0x2472:

case 0x2486:

case 0x249A:

case 0x24F3:

return (double) 19;

case 0x09F5:

case 0x17F2:

case 0x2161:

case 0x2171:

case 0x3022:

case 0x3193:

case 0x3221:

case 0x3281:

#ifdef Py_UNICODE_WIDE

case 0x10108:

case 0x1015B:

case 0x1015C:

case 0x1015D:

case 0x1015E:

case 0x103D2:

#endif

return (double) 2;

case 0x2154:

#ifdef Py_UNICODE_WIDE

case 0x10177:

#endif

return (double) 2 / 3;

case 0x2156:

return (double) 2 / 5;

case 0x1373:

case 0x2473:

case 0x2487:

case 0x249B:

case 0x24F4:

case 0x3039:

#ifdef Py_UNICODE_WIDE

case 0x10111:

case 0x103D4:

case 0x10A45:

#endif

return (double) 20;

#ifdef Py_UNICODE_WIDE

case 0x1011A:

return (double) 200;

case 0x10123:

return (double) 2000;

case 0x1012C:

return (double) 20000;

#endif

case 0x3251:

return (double) 21;

case 0x3252:

return (double) 22;

case 0x3253:

return (double) 23;

case 0x3254:

return (double) 24;

case 0x3255:

return (double) 25;

case 0x3256:

return (double) 26;

case 0x3257:

return (double) 27;

case 0x3258:

return (double) 28;

case 0x3259:

return (double) 29;

case 0x09F6:

case 0x17F3:

case 0x2162:

case 0x2172:

case 0x3023:

case 0x3194:

case 0x3222:

case 0x3282:

#ifdef Py_UNICODE_WIDE

case 0x10109:

#endif

return (double) 3;

case 0x0F2B:

return (double) 3 / 2;

case 0x00BE:

#ifdef Py_UNICODE_WIDE

case 0x10178:

#endif

return (double) 3 / 4;

case 0x2157:

return (double) 3 / 5;

case 0x215C:

return (double) 3 / 8;

case 0x1374:

case 0x303A:

case 0x325A:

#ifdef Py_UNICODE_WIDE

case 0x10112:

case 0x10165:

#endif

return (double) 30;

#ifdef Py_UNICODE_WIDE

case 0x1011B:

case 0x1016B:

return (double) 300;

case 0x10124:

return (double) 3000;

case 0x1012D:

return (double) 30000;

#endif

case 0x325B:

return (double) 31;

case 0x325C:

return (double) 32;

case 0x325D:

return (double) 33;

case 0x325E:

return (double) 34;

case 0x325F:

return (double) 35;

case 0x32B1:

return (double) 36;

case 0x32B2:

return (double) 37;

case 0x32B3:

return (double) 38;

case 0x32B4:

return (double) 39;

case 0x09F7:

case 0x17F4:

case 0x2163:

case 0x2173:

case 0x3024:

case 0x3195:

case 0x3223:

case 0x3283:

#ifdef Py_UNICODE_WIDE

case 0x1010A:

#endif

return (double) 4;

case 0x2158:

return (double) 4 / 5;

case 0x1375:

case 0x32B5:

#ifdef Py_UNICODE_WIDE

case 0x10113:

#endif

return (double) 40;

#ifdef Py_UNICODE_WIDE

case 0x1011C:

return (double) 400;

case 0x10125:

return (double) 4000;

case 0x1012E:

return (double) 40000;

#endif

case 0x32B6:

return (double) 41;

case 0x32B7:

return (double) 42;

case 0x32B8:

return (double) 43;

case 0x32B9:

return (double) 44;

case 0x32BA:

return (double) 45;

case 0x32BB:

return (double) 46;

case 0x32BC:

return (double) 47;

case 0x32BD:

return (double) 48;

case 0x32BE:

return (double) 49;

case 0x17F5:

case 0x2164:

case 0x2174:

case 0x3025:

case 0x3224:

case 0x3284:

#ifdef Py_UNICODE_WIDE

case 0x1010B:

case 0x10143:

case 0x10148:

case 0x1014F:

case 0x1015F:

case 0x10173:

case 0x10321:

#endif

return (double) 5;

case 0x0F2C:

return (double) 5 / 2;

case 0x215A:

return (double) 5 / 6;

case 0x215D:

return (double) 5 / 8;

case 0x1376:

case 0x216C:

case 0x217C:

case 0x32BF:

#ifdef Py_UNICODE_WIDE

case 0x10114:

case 0x10144:

case 0x1014A:

case 0x10151:

case 0x10166:

case 0x10167:

case 0x10168:

case 0x10169:

case 0x10174:

case 0x10323:

#endif

return (double) 50;

case 0x216E:

case 0x217E:

#ifdef Py_UNICODE_WIDE

case 0x1011D:

case 0x10145:

case 0x1014C:

case 0x10153:

case 0x1016C:

case 0x1016D:

case 0x1016E:

case 0x1016F:

case 0x10170:

#endif

return (double) 500;

case 0x2181:

#ifdef Py_UNICODE_WIDE

case 0x10126:

case 0x10146:

case 0x1014E:

case 0x10172:

#endif

return (double) 5000;

#ifdef Py_UNICODE_WIDE

case 0x1012F:

case 0x10147:

case 0x10156:

return (double) 50000;

#endif

case 0x17F6:

case 0x2165:

case 0x2175:

case 0x3026:

case 0x3225:

case 0x3285:

#ifdef Py_UNICODE_WIDE

case 0x1010C:

#endif

return (double) 6;

case 0x1377:

#ifdef Py_UNICODE_WIDE

case 0x10115:

#endif

return (double) 60;

#ifdef Py_UNICODE_WIDE

case 0x1011E:

return (double) 600;

case 0x10127:

return (double) 6000;

case 0x10130:

return (double) 60000;

#endif

case 0x17F7:

case 0x2166:

case 0x2176:

case 0x3027:

case 0x3226:

case 0x3286:

#ifdef Py_UNICODE_WIDE

case 0x1010D:

#endif

return (double) 7;

case 0x0F2D:

return (double) 7 / 2;

case 0x215E:

return (double) 7 / 8;

case 0x1378:

#ifdef Py_UNICODE_WIDE

case 0x10116:

#endif

return (double) 70;

#ifdef Py_UNICODE_WIDE

case 0x1011F:

return (double) 700;

case 0x10128:

return (double) 7000;

case 0x10131:

return (double) 70000;

#endif

case 0x17F8:

case 0x2167:

case 0x2177:

case 0x3028:

case 0x3227:

case 0x3287:

#ifdef Py_UNICODE_WIDE

case 0x1010E:

#endif

return (double) 8;

case 0x1379:

#ifdef Py_UNICODE_WIDE

case 0x10117:

#endif

return (double) 80;

#ifdef Py_UNICODE_WIDE

case 0x10120:

return (double) 800;

case 0x10129:

return (double) 8000;

case 0x10132:

return (double) 80000;

#endif

case 0x17F9:

case 0x2168:

case 0x2178:

case 0x3029:

case 0x3228:

case 0x3288:

#ifdef Py_UNICODE_WIDE

case 0x1010F:

#endif

return (double) 9;

case 0x0F2E:

return (double) 9 / 2;

case 0x137A:

#ifdef Py_UNICODE_WIDE

case 0x10118:

#endif

return (double) 90;

#ifdef Py_UNICODE_WIDE

case 0x10121:

case 0x1034A:

return (double) 900;

case 0x1012A:

return (double) 9000;

case 0x10133:

return (double) 90000;

#endif

default:

return (double) _PyUnicode_ToDigit(ch);

}

int _PyUnicode_IsNumeric(Py_UNICODE ch)

{

return _PyUnicode_ToNumeric(ch) != -1.0;

}

#ifndef WANT_WCTYPE_FUNCTIONS

/* Returns 1 for Unicode characters having the bidirectional type

'WS', 'B' or 'S' or the category 'Zs', 0 otherwise. */

int _PyUnicode_IsWhitespace(register const Py_UNICODE ch)

{

switch (ch) {

case 0x0009: /* HORIZONTAL TABULATION */

case 0x000A: /* LINE FEED */

case 0x000B: /* VERTICAL TABULATION */

case 0x000C: /* FORM FEED */

case 0x000D: /* CARRIAGE RETURN */

case 0x001C: /* FILE SEPARATOR */

case 0x001D: /* GROUP SEPARATOR */

case 0x001E: /* RECORD SEPARATOR */

case 0x001F: /* UNIT SEPARATOR */

case 0x0020: /* SPACE */

case 0x0085: /* NEXT LINE */

case 0x00A0: /* NO-BREAK SPACE */

case 0x1680: /* OGHAM SPACE MARK */

case 0x2000: /* EN QUAD */

case 0x2001: /* EM QUAD */

case 0x2002: /* EN SPACE */

case 0x2003: /* EM SPACE */

case 0x2004: /* THREE-PER-EM SPACE */

case 0x2005: /* FOUR-PER-EM SPACE */

case 0x2006: /* SIX-PER-EM SPACE */

case 0x2007: /* FIGURE SPACE */

case 0x2008: /* PUNCTUATION SPACE */

case 0x2009: /* THIN SPACE */

case 0x200A: /* HAIR SPACE */

case 0x200B: /* ZERO WIDTH SPACE */

case 0x2028: /* LINE SEPARATOR */

case 0x2029: /* PARAGRAPH SEPARATOR */

case 0x202F: /* NARROW NO-BREAK SPACE */

case 0x205F: /* MEDIUM MATHEMATICAL SPACE */

case 0x3000: /* IDEOGRAPHIC SPACE */

return 1;

default:

return 0;

}

/* Returns 1 for Unicode characters having the category 'Ll', 0

otherwise. */

int _PyUnicode_IsLowercase(Py_UNICODE ch)

{

const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);

return (ctype->flags & LOWER_MASK) != 0;

}

/* Returns 1 for Unicode characters having the category 'Lu', 0

otherwise. */

int _PyUnicode_IsUppercase(Py_UNICODE ch)

{

const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);

return (ctype->flags & UPPER_MASK) != 0;

}

/* Returns the uppercase Unicode characters corresponding to ch or just

ch if no uppercase mapping is known. */

Py_UNICODE _PyUnicode_ToUppercase(Py_UNICODE ch)

{

const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);

int delta = ctype->upper;

if (ctype->flags & NODELTA_MASK)

return delta;

if (delta >= 32768)

delta -= 65536;

return ch + delta;

}

/* Returns the lowercase Unicode characters corresponding to ch or just

ch if no lowercase mapping is known. */

Py_UNICODE _PyUnicode_ToLowercase(Py_UNICODE ch)

{

const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);

int delta = ctype->lower;

if (ctype->flags & NODELTA_MASK)

return delta;

if (delta >= 32768)

delta -= 65536;

return ch + delta;

}

/* Returns 1 for Unicode characters having the category 'Ll', 'Lu', 'Lt',

'Lo' or 'Lm', 0 otherwise. */

int _PyUnicode_IsAlpha(Py_UNICODE ch)

{

const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);

return (ctype->flags & ALPHA_MASK) != 0;

}

#else

/* Export the interfaces using the wchar_t type for portability

reasons: */

int _PyUnicode_IsWhitespace(Py_UNICODE ch)

{

return iswspace(ch);

}

int _PyUnicode_IsLowercase(Py_UNICODE ch)

{

return iswlower(ch);

}

int _PyUnicode_IsUppercase(Py_UNICODE ch)

{

return iswupper(ch);

}

Py_UNICODE _PyUnicode_ToLowercase(Py_UNICODE ch)

{

return towlower(ch);

}

Py_UNICODE _PyUnicode_ToUppercase(Py_UNICODE ch)

{

return towupper(ch);

}

int _PyUnicode_IsAlpha(Py_UNICODE ch)

{

return iswalpha(ch);

}

#endif

python/Objects/unicodectype.c at master · java66liu/python · GitHub

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