@NotNull
private static String stripPath(@NotNull String path) {
String[] endingsToStrip = {"/", "!", ".jar"};
StringBuilder buffer = new StringBuilder(path);
for (String ending : endingsToStrip) {
if (buffer.lastIndexOf(ending) == buffer.length() - ending.length()) {
buffer.setLength(buffer.length() - ending.length());
}
}
return buffer.toString();
}
/**
* @param antPattern ant-style path pattern
* @return java regexp pattern. Note that no matter whether forward or backward slashes were used
* in the antPattern the returned regexp pattern will use forward slashes ('/') as file
* separators. Paths containing windows-style backslashes must be converted before matching
* against the resulting regexp
* @see com.intellij.openapi.util.io.FileUtil#toSystemIndependentName
*/
@RegExp
@NotNull
public static String convertAntToRegexp(@NotNull String antPattern, boolean ignoreStartingSlash) {
final StringBuilder builder = new StringBuilder();
int asteriskCount = 0;
boolean recursive = true;
final int start =
ignoreStartingSlash
&& (StringUtil.startsWithChar(antPattern, '/')
|| StringUtil.startsWithChar(antPattern, '\\'))
? 1
: 0;
for (int idx = start; idx < antPattern.length(); idx++) {
final char ch = antPattern.charAt(idx);
if (ch == '*') {
asteriskCount++;
continue;
}
final boolean foundRecursivePattern =
recursive && asteriskCount == 2 && (ch == '/' || ch == '\\');
final boolean asterisksFound = asteriskCount > 0;
asteriskCount = 0;
recursive = ch == '/' || ch == '\\';
if (foundRecursivePattern) {
builder.append("(?:[^/]+/)*?");
continue;
}
if (asterisksFound) {
builder.append("[^/]*?");
}
if (ch == '(' || ch == ')' || ch == '[' || ch == ']' || ch == '^' || ch == '$' || ch == '.'
|| ch == '{' || ch == '}' || ch == '+' || ch == '|') {
// quote regexp-specific symbols
builder.append('\\').append(ch);
continue;
}
if (ch == '?') {
builder.append("[^/]{1}");
continue;
}
if (ch == '\\') {
builder.append('/');
continue;
}
builder.append(ch);
}
// handle ant shorthand: mypackage/test/ is interpreted as if it were mypackage/test/**
final boolean isTrailingSlash =
builder.length() > 0 && builder.charAt(builder.length() - 1) == '/';
if (asteriskCount == 0 && isTrailingSlash || recursive && asteriskCount == 2) {
if (isTrailingSlash) {
builder.setLength(builder.length() - 1);
}
if (builder.length() == 0) {
builder.append(".*");
} else {
builder.append("(?:$|/.+)");
}
} else if (asteriskCount > 0) {
builder.append("[^/]*?");
}
return builder.toString();
}