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package com.gitblit.utils;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.List;
import org.tautua.markdownpapers.Markdown;
import org.tautua.markdownpapers.parser.ParseException;
public class StringUtils {
public static boolean isEmpty(String value) {
return value == null || value.trim().length() == 0;
}
public static String breakLinesForHtml(String string) {
return string.replace("\r\n", "<br/>").replace("\r", "<br/>").replace("\n", "<br/>");
}
public static String escapeForHtml(String inStr, boolean changeSpace) {
StringBuffer retStr = new StringBuffer();
int i = 0;
while (i < inStr.length()) {
if (inStr.charAt(i) == '&') {
retStr.append("&");
} else if (inStr.charAt(i) == '<') {
retStr.append("<");
} else if (inStr.charAt(i) == '>') {
retStr.append(">");
} else if (inStr.charAt(i) == '\"') {
retStr.append(""");
} else if (changeSpace && inStr.charAt(i) == ' ') {
retStr.append(" ");
} else if (changeSpace && inStr.charAt(i) == '\t') {
retStr.append(" ");
} else
retStr.append(inStr.charAt(i));
i++;
}
return retStr.toString();
}
public static String flattenStrings(List<String> values) {
StringBuilder sb = new StringBuilder();
for (String value : values) {
sb.append(value).append(" ");
}
return sb.toString().trim();
}
public static String trimString(String value, int max) {
if (value.length() <= max) {
return value;
}
return value.substring(0, max - 3) + "...";
}
public static String trimShortLog(String string) {
return trimString(string, 60);
}
public static String leftPad(String input, int length, char pad) {
if (input.length() < length) {
StringBuilder sb = new StringBuilder();
for (int i = 0, len = length - input.length(); i < len; i++) {
sb.append(pad);
}
sb.append(input);
return sb.toString();
}
return input;
}
public static String rightPad(String input, int length, char pad) {
if (input.length() < length) {
StringBuilder sb = new StringBuilder();
sb.append(input);
for (int i = 0, len = length - input.length(); i < len; i++) {
sb.append(pad);
}
return sb.toString();
}
return input;
}
public static String getSHA1(String text) {
try {
byte[] bytes = text.getBytes("iso-8859-1");
return getSHA1(bytes);
} catch (UnsupportedEncodingException u) {
throw new RuntimeException(u);
}
}
public static String getSHA1(byte[] bytes) {
try {
MessageDigest md = MessageDigest.getInstance("SHA-1");
md.update(bytes, 0, bytes.length);
byte[] sha1hash = md.digest();
StringBuilder sb = new StringBuilder(sha1hash.length * 2);
for (int i = 0; i < sha1hash.length; i++) {
if (((int) sha1hash[i] & 0xff) < 0x10)
sb.append("0");
sb.append(Long.toString((int) sha1hash[i] & 0xff, 16));
}
return sb.toString();
} catch (NoSuchAlgorithmException t) {
throw new RuntimeException(t);
}
}
public static String transformMarkdown(String markdown) throws java.text.ParseException {
// Read raw markdown content and transform it to html
StringReader reader = new StringReader(markdown);
StringWriter writer = new StringWriter();
try {
Markdown md = new Markdown();
md.transform(reader, writer);
return writer.toString();
} catch (ParseException p) {
throw new java.text.ParseException(p.getMessage(), 0);
} finally {
reader.close();
try {
writer.close();
} catch (IOException e) {
}
}
}
public static String transformMarkdown(Reader markdownReader) throws java.text.ParseException {
// Read raw markdown content and transform it to html
StringWriter writer = new StringWriter();
try {
Markdown md = new Markdown();
md.transform(markdownReader, writer);
return writer.toString();
} catch (ParseException p) {
throw new java.text.ParseException(p.getMessage(), 0);
} finally {
try {
markdownReader.close();
} catch (IOException e) {
}
try {
writer.close();
} catch (IOException e) {
}
}
}
}
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