@Test public void shallNotInterpolateSkippedVaiables() { GenericTokenParser parser = new GenericTokenParser("${", "}", new VariableTokenHandler(new HashMap<String, String>())); assertEquals("${skipped} variable", parser.parse("\\${skipped} variable")); assertEquals("This is a ${skipped} variable", parser.parse("This is a \\${skipped} variable")); assertEquals("null ${skipped} variable", parser.parse("${skipped} \\${skipped} variable")); assertEquals("The null is ${skipped} variable", parser.parse("The ${skipped} is \\${skipped} variable")); }
public String parse(String text) { if (text == null || text.isEmpty()) { return ""; } int start = text.indexOf(openToken, 0); if (start == -1) { return text; } char[] src = text.toCharArray(); int offset = 0; final StringBuilder builder = new StringBuilder(); StringBuilder expression = null; while (start > -1) { if (start > 0 && src[start - 1] == '\\') { builder.append(src, offset, start - offset - 1).append(openToken); offset = start + openToken.length(); } else { if (expression == null) { expression = new StringBuilder(); } else { expression.setLength(0); } builder.append(src, offset, start - offset); offset = start + openToken.length(); int end = text.indexOf(closeToken, offset); while (end > -1) { if (end > offset && src[end - 1] == '\\') { expression.append(src, offset, end - offset - 1).append(closeToken); offset = end + closeToken.length(); end = text.indexOf(closeToken, offset); } else { expression.append(src, offset, end - offset); offset = end + closeToken.length(); break; } } if (end == -1) { builder.append(src, start, src.length - start); offset = src.length; } else { builder.append(handler.handleToken(expression.toString())); offset = end + closeToken.length(); } } start = text.indexOf(openToken, offset); } if (offset < src.length) { builder.append(src, offset, src.length - offset); } return builder.toString(); }
GenericTokenParser { public String parse(String text) { if (text == null || text.isEmpty()) { return ""; } int start = text.indexOf(openToken, 0); if (start == -1) { return text; } char[] src = text.toCharArray(); int offset = 0; final StringBuilder builder = new StringBuilder(); StringBuilder expression = null; while (start > -1) { if (start > 0 && src[start - 1] == '\\') { builder.append(src, offset, start - offset - 1).append(openToken); offset = start + openToken.length(); } else { if (expression == null) { expression = new StringBuilder(); } else { expression.setLength(0); } builder.append(src, offset, start - offset); offset = start + openToken.length(); int end = text.indexOf(closeToken, offset); while (end > -1) { if (end > offset && src[end - 1] == '\\') { expression.append(src, offset, end - offset - 1).append(closeToken); offset = end + closeToken.length(); end = text.indexOf(closeToken, offset); } else { expression.append(src, offset, end - offset); offset = end + closeToken.length(); break; } } if (end == -1) { builder.append(src, start, src.length - start); offset = src.length; } else { builder.append(handler.handleToken(expression.toString())); offset = end + closeToken.length(); } } start = text.indexOf(openToken, offset); } if (offset < src.length) { builder.append(src, offset, src.length - offset); } return builder.toString(); } }
GenericTokenParser { public String parse(String text) { if (text == null || text.isEmpty()) { return ""; } int start = text.indexOf(openToken, 0); if (start == -1) { return text; } char[] src = text.toCharArray(); int offset = 0; final StringBuilder builder = new StringBuilder(); StringBuilder expression = null; while (start > -1) { if (start > 0 && src[start - 1] == '\\') { builder.append(src, offset, start - offset - 1).append(openToken); offset = start + openToken.length(); } else { if (expression == null) { expression = new StringBuilder(); } else { expression.setLength(0); } builder.append(src, offset, start - offset); offset = start + openToken.length(); int end = text.indexOf(closeToken, offset); while (end > -1) { if (end > offset && src[end - 1] == '\\') { expression.append(src, offset, end - offset - 1).append(closeToken); offset = end + closeToken.length(); end = text.indexOf(closeToken, offset); } else { expression.append(src, offset, end - offset); offset = end + closeToken.length(); break; } } if (end == -1) { builder.append(src, start, src.length - start); offset = src.length; } else { builder.append(handler.handleToken(expression.toString())); offset = end + closeToken.length(); } } start = text.indexOf(openToken, offset); } if (offset < src.length) { builder.append(src, offset, src.length - offset); } return builder.toString(); } GenericTokenParser(String openToken, String closeToken, TokenHandler handler); }
GenericTokenParser { public String parse(String text) { if (text == null || text.isEmpty()) { return ""; } int start = text.indexOf(openToken, 0); if (start == -1) { return text; } char[] src = text.toCharArray(); int offset = 0; final StringBuilder builder = new StringBuilder(); StringBuilder expression = null; while (start > -1) { if (start > 0 && src[start - 1] == '\\') { builder.append(src, offset, start - offset - 1).append(openToken); offset = start + openToken.length(); } else { if (expression == null) { expression = new StringBuilder(); } else { expression.setLength(0); } builder.append(src, offset, start - offset); offset = start + openToken.length(); int end = text.indexOf(closeToken, offset); while (end > -1) { if (end > offset && src[end - 1] == '\\') { expression.append(src, offset, end - offset - 1).append(closeToken); offset = end + closeToken.length(); end = text.indexOf(closeToken, offset); } else { expression.append(src, offset, end - offset); offset = end + closeToken.length(); break; } } if (end == -1) { builder.append(src, start, src.length - start); offset = src.length; } else { builder.append(handler.handleToken(expression.toString())); offset = end + closeToken.length(); } } start = text.indexOf(openToken, offset); } if (offset < src.length) { builder.append(src, offset, src.length - offset); } return builder.toString(); } GenericTokenParser(String openToken, String closeToken, TokenHandler handler); String parse(String text); }
GenericTokenParser { public String parse(String text) { if (text == null || text.isEmpty()) { return ""; } int start = text.indexOf(openToken, 0); if (start == -1) { return text; } char[] src = text.toCharArray(); int offset = 0; final StringBuilder builder = new StringBuilder(); StringBuilder expression = null; while (start > -1) { if (start > 0 && src[start - 1] == '\\') { builder.append(src, offset, start - offset - 1).append(openToken); offset = start + openToken.length(); } else { if (expression == null) { expression = new StringBuilder(); } else { expression.setLength(0); } builder.append(src, offset, start - offset); offset = start + openToken.length(); int end = text.indexOf(closeToken, offset); while (end > -1) { if (end > offset && src[end - 1] == '\\') { expression.append(src, offset, end - offset - 1).append(closeToken); offset = end + closeToken.length(); end = text.indexOf(closeToken, offset); } else { expression.append(src, offset, end - offset); offset = end + closeToken.length(); break; } } if (end == -1) { builder.append(src, start, src.length - start); offset = src.length; } else { builder.append(handler.handleToken(expression.toString())); offset = end + closeToken.length(); } } start = text.indexOf(openToken, offset); } if (offset < src.length) { builder.append(src, offset, src.length - offset); } return builder.toString(); } GenericTokenParser(String openToken, String closeToken, TokenHandler handler); String parse(String text);  }