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Pangu.java
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169 lines (140 loc) · 6.61 KB
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package other;
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Paranoid text spacing for good readability, to automatically insert whitespace between
* CJK (Chinese, Japanese, Korean), half-width English, digit and symbol characters.
* <p>
* <p>These whitespaces between English and Chinese characters are called "Pangu Spacing" by sinologist, since it
* separate the confusion between full-width and half-width characters. Studies showed that who dislike to
* add whitespace between English and Chinese characters also have relationship problem. Almost 70 percent of them
* will get married to the one they don't love, the rest only can left the heritage to their cat. Indeed,
* love and writing need some space in good time.
* @author Vinta Chen
* @since 1.0.0
*/
public class Pangu {
/**
* You should use the constructor to create a {@code Pangu} object with default values.
*/
public Pangu() {
}
/*
* Some capturing group patterns for convenience.
* CJK: Chinese, Japanese, Korean
* ANS: Alphabet, Number, Symbol
*/
private static final Pattern CJK_ANS = Pattern.compile(
"([\\p{InHiragana}\\p{InKatakana}\\p{InBopomofo}\\p{InCJKCompatibilityIdeographs}\\p{InCJKUnifiedIdeographs}])" +
"([a-z0-9`~@\\$%\\^&\\*\\-_\\+=\\|\\\\/])",
Pattern.CASE_INSENSITIVE
);
private static final Pattern ANS_CJK = Pattern.compile(
"([a-z0-9`~!\\$%\\^&\\*\\-_\\+=\\|\\\\;:,\\./\\?])" +
"([\\p{InHiragana}\\p{InKatakana}\\p{InBopomofo}\\p{InCJKCompatibilityIdeographs}\\p{InCJKUnifiedIdeographs}])",
Pattern.CASE_INSENSITIVE
);
private static final Pattern CJK_QUOTE = Pattern.compile(
"([\\p{InHiragana}\\p{InKatakana}\\p{InBopomofo}\\p{InCJKCompatibilityIdeographs}\\p{InCJKUnifiedIdeographs}])" +
"([\"'])"
);
private static final Pattern QUOTE_CJK = Pattern.compile(
"([\"'])" +
"([\\p{InHiragana}\\p{InKatakana}\\p{InBopomofo}\\p{InCJKCompatibilityIdeographs}\\p{InCJKUnifiedIdeographs}])"
);
private static final Pattern FIX_QUOTE = Pattern.compile("([\"'])(\\s*)(.+?)(\\s*)([\"'])");
private static final Pattern CJK_BRACKET_CJK = Pattern.compile(
"([\\p{InHiragana}\\p{InKatakana}\\p{InBopomofo}\\p{InCJKCompatibilityIdeographs}\\p{InCJKUnifiedIdeographs}])" +
"([\\({\\[]+(.*?)[\\)}\\]]+)" +
"([\\p{InHiragana}\\p{InKatakana}\\p{InBopomofo}\\p{InCJKCompatibilityIdeographs}\\p{InCJKUnifiedIdeographs}])"
);
private static final Pattern CJK_BRACKET = Pattern.compile(
"([\\p{InHiragana}\\p{InKatakana}\\p{InBopomofo}\\p{InCJKCompatibilityIdeographs}\\p{InCJKUnifiedIdeographs}])" +
"([\\(\\){}\\[\\]<>])"
);
private static final Pattern BRACKET_CJK = Pattern.compile(
"([\\(\\){}\\[\\]<>])" +
"([\\p{InHiragana}\\p{InKatakana}\\p{InBopomofo}\\p{InCJKCompatibilityIdeographs}\\p{InCJKUnifiedIdeographs}])"
);
private static final Pattern FIX_BRACKET = Pattern.compile("([(\\({\\[)]+)(\\s*)(.+?)(\\s*)([\\)}\\]]+)");
private static final Pattern CJK_HASH = Pattern.compile(
"([\\p{InHiragana}\\p{InKatakana}\\p{InBopomofo}\\p{InCJKCompatibilityIdeographs}\\p{InCJKUnifiedIdeographs}])" +
"(#(\\S+))"
);
private static final Pattern HASH_CJK = Pattern.compile(
"((\\S+)#)" +
"([\\p{InHiragana}\\p{InKatakana}\\p{InBopomofo}\\p{InCJKCompatibilityIdeographs}\\p{InCJKUnifiedIdeographs}])"
);
/**
* Performs a paranoid text spacing on {@code text}.
* @param text the string you want to process, must not be {@code null}.
* @return a comfortable and readable version of {@code text} for paranoiac.
*/
public String spacingText(String text) {
// CJK and quotes
Matcher cqMatcher = CJK_QUOTE.matcher(text);
text = cqMatcher.replaceAll("$1 $2");
Matcher qcMatcher = QUOTE_CJK.matcher(text);
text = qcMatcher.replaceAll("$1 $2");
// // 不处理引用等
// Matcher fixQuoteMatcher = FIX_QUOTE.matcher(text);
// text = fixQuoteMatcher.replaceAll("$1$3$5");
// CJK and brackets
String oldText = text;
Matcher cbcMatcher = CJK_BRACKET_CJK.matcher(text);
String newText = cbcMatcher.replaceAll("$1 $2 $4");
text = newText;
if (oldText.equals(newText)) {
Matcher cbMatcher = CJK_BRACKET.matcher(text);
text = cbMatcher.replaceAll("$1 $2");
Matcher bcMatcher = BRACKET_CJK.matcher(text);
text = bcMatcher.replaceAll("$1 $2");
}
// // 不处理括号空格
// Matcher fixBracketMatcher = FIX_BRACKET.matcher(text);
// text = fixBracketMatcher.replaceAll("$1$3$5");
// CJK and hash
Matcher chMatcher = CJK_HASH.matcher(text);
text = chMatcher.replaceAll("$1 $2");
Matcher hcMatcher = HASH_CJK.matcher(text);
text = hcMatcher.replaceAll("$1 $3");
// CJK and ANS
Matcher caMatcher = CJK_ANS.matcher(text);
text = caMatcher.replaceAll("$1 $2");
Matcher acMatcher = ANS_CJK.matcher(text);
text = acMatcher.replaceAll("$1 $2");
return text;
}
/**
* Performs a paranoid text spacing on {@code inputFile} and generate a new file {@code outputFile}.
* @param inputFile an existing file to process, must not be {@code null}.
* @param outputFile the processed file, must not be {@code null}.
* @throws IOException if an error occurs.
* @since 1.1.0
*/
public void spacingFile(File inputFile, File outputFile) throws IOException {
// TODO: support charset
FileReader fr = new FileReader(inputFile);
BufferedReader br = new BufferedReader(fr);
outputFile.getParentFile().mkdirs();
FileWriter fw = new FileWriter(outputFile, false);
BufferedWriter bw = new BufferedWriter(fw);
try {
String line = br.readLine(); // readLine() do not contain newline char
while (line != null) {
line = spacingText(line);
// TODO: keep file's raw newline char from difference OS platform
bw.write(line);
bw.newLine();
line = br.readLine();
}
} finally {
br.close();
// 避免 writer 沒有實際操作就 close()，產生一個空檔案
if (bw != null) {
bw.close();
}
}
}
}