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371 lines (346 loc) · 10.8 KB
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package org.python.modules.unicodedata;
import com.ibm.icu.lang.UCharacter;
import com.ibm.icu.lang.UProperty;
import com.ibm.icu.text.Normalizer;
import org.python.core.Py;
import org.python.core.PyFloat;
import org.python.core.PyLong;
import org.python.core.PyObject;
import org.python.core.PyType;
import org.python.core.PyUnicode;
import org.python.expose.ExposedGet;
import org.python.expose.ExposedMethod;
import org.python.expose.ExposedType;
import java.util.HashMap;
import static com.ibm.icu.lang.UCharacter.EastAsianWidth.*;
import static com.ibm.icu.lang.UCharacterEnums.ECharacterCategory.*;
import static com.ibm.icu.lang.UCharacterEnums.ECharacterDirection.*;
import static com.ibm.icu.text.Normalizer.*;
@ExposedType(name = "unicodedata.UCD")
public class UCD extends PyObject {
private static final HashMap<PyUnicode, Normalizer.Mode> _FORMS = new HashMap<>();
public static PyType TYPE = PyType.fromClass(UCD.class);
public static final UCD UNICODEDATA = new UCD();
public static final UCD UCD_3_2 = new UCD(true);
private boolean ucd_3_2;
protected UCD(boolean ucd_3_2) {
super(TYPE);
this.ucd_3_2 = ucd_3_2;
}
protected UCD() {
this(false);
}
static {
_FORMS.put(new PyUnicode("NFC"), NFC);
_FORMS.put(new PyUnicode("NFKC"), NFKC);
_FORMS.put(new PyUnicode("NFD"), NFD);
_FORMS.put(new PyUnicode("NFKD"), NFKD);
}
@ExposedMethod
final PyObject UCD_normalize(PyObject form, PyObject str) {
if (!_FORMS.containsKey(form)) {
throw Py.ValueError("invalid normalization form");
}
if (ucd_3_2) {
return new PyUnicode(Normalizer.normalize(str.toString(), _FORMS.get(form), UNICODE_3_2));
}
return new PyUnicode(Normalizer.normalize(str.toString(), _FORMS.get(form)));
}
@ExposedMethod
final PyObject UCD_category(PyObject chr) {
int type = UCharacter.getType(getCodePoint("category", chr));
String t;
switch(type) {
case COMBINING_SPACING_MARK:
t = "Mc";
break;
case CONNECTOR_PUNCTUATION:
t = "Pc";
break;
case CONTROL:
t = "Cc";
break;
case CURRENCY_SYMBOL:
t = "Sc";
break;
case DASH_PUNCTUATION:
t = "Pd";
break;
case DECIMAL_DIGIT_NUMBER:
t = "Nd";
break;
case ENCLOSING_MARK:
t = "Me";
break;
case END_PUNCTUATION:
t = "Pe";
break;
case FINAL_PUNCTUATION:
t = "Pf";
break;
case FORMAT:
t = "Cf";
break;
case INITIAL_PUNCTUATION:
t = "Pi";
break;
case LETTER_NUMBER:
t = "Nl";
break;
case LINE_SEPARATOR:
t = "Zl";
break;
case LOWERCASE_LETTER:
t = "Ll";
break;
case MATH_SYMBOL:
t = "Sm";
break;
case MODIFIER_LETTER:
t = "Lm";
break;
case MODIFIER_SYMBOL:
t = "Sk";
break;
case NON_SPACING_MARK:
t = "Mn";
break;
case OTHER_LETTER:
t = "Lo";
break;
case OTHER_NUMBER:
t = "No";
break;
case OTHER_PUNCTUATION:
t = "Po";
break;
case OTHER_SYMBOL:
t = "So";
break;
case PARAGRAPH_SEPARATOR:
t = "Zp";
break;
case PRIVATE_USE:
t = "Co";
break;
case SPACE_SEPARATOR:
t = "Zs";
break;
case START_PUNCTUATION:
t = "Ps";
break;
case SURROGATE:
t = "Cs";
break;
case TITLECASE_LETTER:
t = "Lt";
break;
case UNASSIGNED:
t = "Cn";
break;
case UPPERCASE_LETTER:
t = "Lu";
break;
default:
t = "";
}
return new PyUnicode(t);
}
@ExposedMethod
final PyObject UCD_bidirectional(PyObject chr) {
int dir = UCharacter.getDirection(getCodePoint("bidirectional", chr));
String t;
switch(dir) {
case ARABIC_NUMBER:
t = "An";
break;
case BLOCK_SEPARATOR:
t = "B";
break;
case BOUNDARY_NEUTRAL:
t = "BN";
break;
case COMMON_NUMBER_SEPARATOR:
t = "CS";
break;
case DIR_NON_SPACING_MARK:
t = "NSM";
break;
case EUROPEAN_NUMBER:
t = "EN";
break;
case EUROPEAN_NUMBER_SEPARATOR:
t = "ES";
break;
case EUROPEAN_NUMBER_TERMINATOR:
t = "ET";
break;
case FIRST_STRONG_ISOLATE:
t = "FSI";
break;
case LEFT_TO_RIGHT:
t = "L";
break;
case LEFT_TO_RIGHT_EMBEDDING:
t = "LRE";
break;
case LEFT_TO_RIGHT_ISOLATE:
t = "LRI";
break;
case LEFT_TO_RIGHT_OVERRIDE:
t = "LRO";
break;
case OTHER_NEUTRAL:
t = "ON";
break;
case POP_DIRECTIONAL_FORMAT:
t = "PDF";
break;
case POP_DIRECTIONAL_ISOLATE:
t = "PDI";
break;
case RIGHT_TO_LEFT:
t = "R";
break;
case RIGHT_TO_LEFT_ARABIC:
t = "AL";
break;
case RIGHT_TO_LEFT_EMBEDDING:
t = "RLE";
break;
case RIGHT_TO_LEFT_ISOLATE:
t = "RLI";
break;
case RIGHT_TO_LEFT_OVERRIDE:
t = "RLO";
break;
case SEGMENT_SEPARATOR:
t = "S";
break;
case WHITE_SPACE_NEUTRAL:
t = "WS";
break;
default:
t = "";
}
return new PyUnicode(t);
}
@ExposedMethod
final PyObject UCD_combining(PyObject chr) {
return new PyLong(UCharacter.getCombiningClass(getCodePoint("combining", chr)));
}
@ExposedMethod(defaults = {"null"})
final PyObject UCD_decimal(PyObject chr, PyObject defaults) {
int d = UCharacter.getNumericValue(getCodePoint("decimal", chr));
if (d < 9 && d > 0) {
return new PyLong(d);
}
if (defaults != null) {
return defaults;
}
throw Py.ValueError("not a decimal");
}
@ExposedMethod(defaults = {"null"})
final PyObject UCD_digit(PyObject chr, PyObject defaults) {
int d = UCharacter.digit(getCodePoint("digit", chr));
if (d != -1) {
return new PyLong(d);
}
if (defaults != null) {
return defaults;
}
throw Py.ValueError("not a digit");
}
@ExposedMethod
final PyObject UCD_mirrored(PyObject chr) {
return Py.newBoolean(UCharacter.isMirrored(getCodePoint("mirrored", chr)));
}
@ExposedMethod
final PyObject UCD_east_asian_width(PyObject chr) {
int w = UCharacter.getIntPropertyValue(getCodePoint("east_asian_width", chr), UProperty.EAST_ASIAN_WIDTH);
String t;
switch (w) {
case AMBIGUOUS:
t = "A";
break;
case COUNT:
t = "?";
break;
case FULLWIDTH:
t = "F";
break;
case HALFWIDTH:
t = "H";
break;
case NARROW:
t = "Na";
break;
case NEUTRAL:
t = "N";
break;
case WIDE:
t = "W";
break;
default:
t = "";
}
return new PyUnicode(t);
}
@ExposedMethod(defaults = {"null"})
final PyObject UCD_numeric(PyObject chr, PyObject defaults) {
double n = UCharacter.getUnicodeNumericValue(getCodePoint("nemuric", chr));
if (n == UCharacter.NO_NUMERIC_VALUE) {
if (defaults != null) return defaults;
throw Py.ValueError("not a numeric");
}
return new PyFloat(n);
}
@ExposedMethod(defaults = {"null"})
final PyObject UCD_name(PyObject chr, PyObject defaults) {
String name = UCharacter.getName(getCodePoint("name", chr));
if (name != null) {
return new PyUnicode(name);
}
if (defaults != null)
return defaults;
throw Py.ValueError("no such name");
}
@ExposedMethod
final PyObject UCD_lookup(PyObject name) {
int codepoint = UCharacter.getCharFromName(name.toString());
if (codepoint == -1) {
codepoint = UCharacter.getCharFromNameAlias(name.toString());
}
if (codepoint == -1) {
throw Py.KeyError(String.format("undefined character name '%s'", name));
}
return new PyUnicode(String.valueOf(Character.toChars(codepoint)));
}
@ExposedMethod
final PyObject UCD_decomposition(PyObject chr) {
validateUnichr("decomposition", chr);
String s;
if (ucd_3_2) {
s = Normalizer.decompose(chr.toString(), true, UNICODE_3_2);
} else {
s = Normalizer.decompose(chr.toString(), true);
}
return new PyUnicode(s);
}
@ExposedGet
final PyObject unidata_version() {
if (ucd_3_2) {
return new PyUnicode("3.2.0");
}
return new PyUnicode(UCharacter.getUnicodeVersion().toString());
}
private int getCodePoint(String methodName, PyObject chr) {
validateUnichr(methodName, chr);
return chr.toString().codePointAt(0);
}
private void validateUnichr(String methodName, PyObject chr) {
if (!(chr instanceof PyUnicode) || chr.__len__() != 1) {
throw Py.TypeError(String.format("%s() argument must be a unicode character, not %s", methodName, chr.getType().getName()));
}
}
}