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package lombok.website;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.petebevin.markdown.MarkdownProcessor;
public class CompileChangelog {
public static void main(String[] args) {
String fileIn = args[0];
String fileOut = args[1];
boolean edge = args.length > 3 && "-edge".equals(args[2]);
boolean latest = args.length > 3 && "-latest".equals(args[2]);
String version = args.length > 3 ? args[3] : null;
try {
FileInputStream in = new FileInputStream(fileIn);
ByteArrayOutputStream out = new ByteArrayOutputStream();
byte[] b = new byte[65536];
while (true) {
int r = in.read(b);
if ( r == -1 ) break;
out.write(b, 0, r);
}
in.close();
String markdown = new String(out.toByteArray(), "UTF-8");
String result;
if (edge) {
result = buildEdge(sectionByVersion(markdown, version));
} else if (latest) {
result = buildLatest(sectionByVersion(markdown, version));
} else {
result = build(markdown);
}
FileOutputStream file = new FileOutputStream(fileOut);
file.write(result.getBytes("UTF-8"));
file.close();
System.exit(0);
} catch (Throwable e) {
e.printStackTrace();
System.exit(1);
}
}
private static String build(String markdown) {
return new MarkdownProcessor().markdown(markdown);
}
private static String buildEdge(String section) {
String latest = section != null ? section : "* No changelog records for this edge release.";
return new MarkdownProcessor().markdown(latest);
}
private static String buildLatest(String section) {
String latest = section != null ? section : "* No changelog records for this release.";
String noIssueLinks = latest.replaceAll("\\[[^]]*[Ii]ssue[^]]*\\]\\([^)]*\\)", "");
String noLinks = noIssueLinks.replaceAll("\\[([^]]*)\\]\\([^)]*\\)", "$1");
return new MarkdownProcessor().markdown(noLinks);
}
private static String sectionByVersion(String markdown, String version) {
if (version.toUpperCase().endsWith("-HEAD") || version.toUpperCase().endsWith("-EDGE")) {
version = version.substring(0, version.length() - 5);
}
Pattern p = Pattern.compile(
"(?is-m)^.*###\\s*v" + version + ".*?\n(.*?)(?:###\\s*v.*)?$");
Matcher m = p.matcher(markdown);
return m.matches() ? m.group(1) : null;
}
}
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