parquet-thrift/src/main/java/org/apache/parquet/thrift/projection/deprecated/PathGlobPattern.java
public void set(String glob) {
    StringBuilder regex = new StringBuilder();
    int setOpen = 0;
    int curlyOpen = 0;
    int len = glob.length();
    hasWildcard = false;

    for (int i = 0; i < len; i++) {
      char c = glob.charAt(i);

      switch (c) {
        case BACKSLASH:
          if (++i >= len) {
            error("Missing escaped character", glob, i);
          }
          regex.append(c).append(glob.charAt(i));
          continue;
        case '.':
        case '$':
        case '(':
        case ')':
        case '|':
        case '+':
          // escape regex special chars that are not glob special chars
          regex.append(BACKSLASH);
          break;
        case '*':
          if (i + 1 < len && glob.charAt(i + 1) == '*') {
            regex.append('.');
            i++;
            break;
          }
          regex.append("[^" + PATH_SEPARATOR + "]");
          hasWildcard = true;
          break;
        case '?':
          regex.append('.');
          hasWildcard = true;
          continue;
        case '{': // start of a group
          regex.append("(?:"); // non-capturing
          curlyOpen++;
          hasWildcard = true;
          continue;
        case ',':
          regex.append(curlyOpen > 0 ? '|' : c);
          continue;
        case '}':
          if (curlyOpen > 0) {
            // end of a group
            curlyOpen--;
            regex.append(")");
            continue;
          }
          break;
        case '[':
          if (setOpen > 0) {
            error("Unclosed character class", glob, i);
          }
          setOpen++;
          hasWildcard = true;
          break;
        case '^': // ^ inside [...] can be unescaped
          if (setOpen == 0) {
            regex.append(BACKSLASH);
          }
          break;
        case '!': // [! needs to be translated to [^
          regex.append(setOpen > 0 && '[' == glob.charAt(i - 1) ? '^' : '!');
          continue;
        case ']':
          // Many set errors like [][] could not be easily detected here,
          // as []], []-] and [-] are all valid POSIX glob and java regex.
          // We'll just let the regex compiler do the real work.
          setOpen = 0;
          break;
        default:
      }
      regex.append(c);
    }

    if (setOpen > 0) {
      error("Unclosed character class", glob, len);
    }
    if (curlyOpen > 0) {
      error("Unclosed group", glob, len);
    }
    compiled = Pattern.compile(regex.toString());
  }
public void set(String glob) {
    StringBuilder regex = new StringBuilder();
    int setOpen = 0;
    int curlyOpen = 0;
    int len = glob.length();
    hasWildcard = false;

    for (int i = 0; i < len; i++) {
      char c = glob.charAt(i);

      switch (c) {
        case BACKSLASH:
          if (++i >= len) {
            error("Missing escaped character", glob, i);
          }
          regex.append(c).append(glob.charAt(i));
          continue;
        case '.':
        case '$':
        case '(':
        case ')':
        case '|':
        case '+':
          // escape regex special chars that are not glob special chars
          regex.append(BACKSLASH);
          break;
        case '*':
          if (i + 1 < len && glob.charAt(i + 1) == '*') {
            regex.append('.');
            i++;
            break;
          }
          regex.append("[^" + PATH_SEPARATOR + "]");
          hasWildcard = true;
          break;
        case '?':
          regex.append('.');
          hasWildcard = true;
          continue;
        case '{': // start of a group
          regex.append("(?:"); // non-capturing
          curlyOpen++;
          hasWildcard = true;
          continue;
        case ',':
          regex.append(curlyOpen > 0 ? '|' : c);
          continue;
        case '}':
          if (curlyOpen > 0) {
            // end of a group
            curlyOpen--;
            regex.append(")");
            continue;
          }
          break;
        case '[':
          if (setOpen > 0) {
            error("Unclosed character class", glob, i);
          }
          setOpen++;
          hasWildcard = true;
          break;
        case '^': // ^ inside [...] can be unescaped
          if (setOpen == 0) {
            regex.append(BACKSLASH);
          }
          break;
        case '!': // [! needs to be translated to [^
          regex.append(setOpen > 0 && '[' == glob.charAt(i - 1) ? '^' : '!');
          continue;
        case ']':
          // Many set errors like [][] could not be easily detected here,
          // as []], []-] and [-] are all valid POSIX glob and java regex.
          // We'll just let the regex compiler do the real work.
          setOpen = 0;
          break;
        default:
      }
      regex.append(c);
    }

    if (setOpen > 0) {
      error("Unclosed character class", glob, len);
    }
    if (curlyOpen > 0) {
      error("Unclosed group", glob, len);
    }
    compiled = Pattern.compile(regex.toString());
  }
public void set ( String glob ) { StringBuilder regex = new StringBuilder ( ) ; int setOpen = 0 ; int curlyOpen = 0 ; int len = glob . length ( ) ; hasWildcard = false ; for ( int i = 0 ; i < len ; i ++ ) { char c = glob . charAt ( i ) ; switch ( c ) { case BACKSLASH : if ( ++ i >= len ) { error ( "Missing escaped character" , glob , i ) ; } regex . append ( c ) . append ( glob . charAt ( i ) ) ; continue ; case ' ' : case ' ' : case ' ' : case ' ' : case ' ' : case ' ' : // escape regex special chars that are not glob special chars regex . append ( BACKSLASH ) ; break ; case ' ' : if ( i + 1 < len && glob . charAt ( i + 1 ) == ' ' ) { regex . append ( ' ' ) ; i ++ ; break ; } regex . append ( "[^" + PATH_SEPARATOR + "]" ) ; hasWildcard = true ; break ; case ' ' : regex . append ( ' ' ) ; hasWildcard = true ; continue ; case ' ' : // start of a group regex . append ( "(?:" ) ; // non-capturing curlyOpen ++ ; hasWildcard = true ; continue ; case ' ' : regex . append ( curlyOpen > 0 ? ' ' : c ) ; continue ; case ' ' : if ( curlyOpen > 0 ) { // end of a group curlyOpen -- ; regex . append ( ")" ) ; continue ; } break ; case ' ' : if ( setOpen > 0 ) { error ( "Unclosed character class" , glob , i ) ; } setOpen ++ ; hasWildcard = true ; break ; case ' ' : // ^ inside [...] can be unescaped if ( setOpen == 0 ) { regex . append ( BACKSLASH ) ; } break ; case ' ' : // [! needs to be translated to [^ regex . append ( setOpen > 0 && ' ' == glob . charAt ( i - 1 ) ? ' ' : ' ' ) ; continue ; case ' ' : // Many set errors like [][] could not be easily detected here, // as []], []-] and [-] are all valid POSIX glob and java regex. // We'll just let the regex compiler do the real work. setOpen = 0 ; break ; default : } regex . append ( c ) ; } if ( setOpen > 0 ) { error ( "Unclosed character class" , glob , len ) ; } if ( curlyOpen > 0 ) { error ( "Unclosed group" , glob , len ) ; } compiled = Pattern . compile ( regex . toString ( ) ) ; }
Set and compile a glob pattern

@param glob the glob pattern string
Set and compile a glob pattern