mirror of https://gitee.com/bigwinds/arangodb
339 lines
9.8 KiB
JavaScript
339 lines
9.8 KiB
JavaScript
/*jslint indent: 2,
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nomen: true,
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maxlen: 100,
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sloppy: true,
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vars: true,
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white: true,
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plusplus: true */
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/*global require, print */
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////////////////////////////////////////////////////////////////////////////////
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/// @brief printing
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2010-2012 triagens GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Copyright 2011-2012, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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(function () {
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var internal = require("internal");
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// -----------------------------------------------------------------------------
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// --SECTION-- Module "internal"
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// -----------------------------------------------------------------------------
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// -----------------------------------------------------------------------------
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// --SECTION-- private functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup V8Shell
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief prints objects to standard output
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///
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/// @FUN{internal.printShell(@FA{arg1}, @FA{arg2}, @FA{arg3}, ...)}
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///
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/// Only available in shell mode.
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///
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/// Prints the arguments. If an argument is an object having a
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/// function @FN{_PRINT}, then this function is called. Otherwise @FN{toJson} is
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/// used. A final newline is printed
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///
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/// @verbinclude fluent40
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////////////////////////////////////////////////////////////////////////////////
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internal.printShell = function () {
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var i;
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for (i = 0; i < arguments.length; ++i) {
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if (0 < i) {
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internal.output(" ");
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}
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if (typeof(arguments[i]) === "string") {
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internal.output(arguments[i]);
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}
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else {
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internal.printRecursive(arguments[i], [], "~", [], 0);
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}
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}
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if (internal.COLOR_OUTPUT) {
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internal.output(internal.COLOR_OUTPUT_DEFAULT);
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internal.output(internal.COLOR_OUTPUT_RESET);
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}
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internal.output("\n");
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};
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////////////////////////////////////////////////////////////////////////////////
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/// @brief quote cache
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////////////////////////////////////////////////////////////////////////////////
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internal.characterQuoteCache = {
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'\b': '\\b', // ASCII 8, Backspace
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'\t': '\\t', // ASCII 9, Tab
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'\n': '\\n', // ASCII 10, Newline
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'\f': '\\f', // ASCII 12, Formfeed
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'\r': '\\r', // ASCII 13, Carriage Return
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'\"': '\\"',
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'\\': '\\\\'
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};
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////////////////////////////////////////////////////////////////////////////////
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/// @brief quotes a single character
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////////////////////////////////////////////////////////////////////////////////
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internal.quoteSingleJsonCharacter = function (c) {
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if (internal.characterQuoteCache.hasOwnProperty[c]) {
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return internal.characterQuoteCache[c];
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}
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var charCode = c.charCodeAt(0);
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var result;
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if (charCode < 16) {
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result = '\\u000';
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}
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else if (charCode < 256) {
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result = '\\u00';
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}
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else if (charCode < 4096) {
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result = '\\u0';
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}
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else {
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result = '\\u';
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}
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result += charCode.toString(16);
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internal.characterQuoteCache[c] = result;
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return result;
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};
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////////////////////////////////////////////////////////////////////////////////
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/// @brief quotes a string character
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////////////////////////////////////////////////////////////////////////////////
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internal.quoteJsonString = function (str) {
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var quotable = /[\\\"\x00-\x1f]/g;
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return '"' + str.replace(quotable, internal.quoteSingleJsonCharacter) + '"';
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};
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////////////////////////////////////////////////////////////////////////////////
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/// @brief prints objects to standard output without a new-line
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////////////////////////////////////////////////////////////////////////////////
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internal.printRecursive = function (value, seen, path, names, level) {
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var p;
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if (seen === undefined) {
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seen = [];
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names = [];
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}
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p = seen.indexOf(value);
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if (0 <= p) {
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internal.output(names[p]);
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}
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else {
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if (value instanceof Object) {
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seen.push(value);
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names.push(path);
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}
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if (value instanceof Object) {
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if ('_PRINT' in value) {
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value._PRINT(seen, path, names, level);
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}
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else if (value instanceof Array) {
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internal.printArray(value, seen, path, names, level);
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}
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else if (value.__proto__ === Object.prototype) {
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internal.printObject(value, seen, path, names, level);
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}
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else if ('toString' in value) {
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internal.output(value.toString());
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}
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else {
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internal.printObject(value, seen, path, names, level);
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}
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}
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else if (value === undefined) {
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internal.output("undefined");
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}
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else {
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if (typeof(value) === "string") {
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internal.output(internal.quoteJsonString(value));
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}
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else {
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internal.output(String(value));
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}
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}
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}
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};
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////////////////////////////////////////////////////////////////////////////////
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/// @brief prints the ident for pretty printing
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///
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/// @FUN{internal.printIndent(@FA{level})}
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///
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/// Only available in shell mode.
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////////////////////////////////////////////////////////////////////////////////
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internal.printIndent = function (level) {
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var j;
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if (internal.PRETTY_PRINT) {
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internal.output("\n");
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for (j = 0; j < level; ++j) {
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internal.output(" ");
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}
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}
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};
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////////////////////////////////////////////////////////////////////////////////
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/// @brief JSON representation of an array
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////////////////////////////////////////////////////////////////////////////////
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internal.printArray = function (object, seen, path, names, level) {
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if (object.length === 0) {
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internal.output("[ ]");
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}
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else {
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var i;
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var sep = "";
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internal.output("[");
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var newLevel = level + 1;
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for (i = 0; i < object.length; i++) {
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internal.output(sep);
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internal.printIndent(newLevel);
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internal.printRecursive(object[i],
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seen,
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path + "[" + i + "]",
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names,
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newLevel);
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sep = ", ";
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}
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if (object.length > 1) {
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internal.output(" ");
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}
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internal.printIndent(level);
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internal.output("]");
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}
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};
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////////////////////////////////////////////////////////////////////////////////
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/// @brief prints an object
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////////////////////////////////////////////////////////////////////////////////
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internal.printObject = function (object, seen, path, names, level) {
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var sep = " ";
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var k;
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internal.output("{");
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var newLevel = level + 1;
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for (k in object) {
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if (object.hasOwnProperty(k)) {
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var val = object[k];
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internal.output(sep);
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internal.printIndent(newLevel);
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if (internal.COLOR_OUTPUT) {
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internal.output(internal.COLOR_OUTPUT_DEFAULT);
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internal.output(internal.quoteJsonString(k));
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internal.output(internal.COLOR_OUTPUT_RESET);
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internal.output(" : ");
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}
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else {
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internal.output(internal.quoteJsonString(k), " : ");
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}
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internal.printRecursive(val,
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seen,
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path + "[" + k + "]",
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names,
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newLevel);
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sep = ", ";
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}
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}
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if (sep == ", ") {
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internal.output(" ");
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}
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internal.printIndent(level);
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internal.output("}");
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};
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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}());
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// -----------------------------------------------------------------------------
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// --SECTION-- global functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup V8Shell
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief global print
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////////////////////////////////////////////////////////////////////////////////
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// must be a variable definition for the browser
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if (typeof require("internal").printBrowser === "function") {
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print = require("internal").print = require("internal").printBrowser;
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}
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else {
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print = require("internal").print = require("internal").printShell;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "^\\(/// @brief\\|/// @addtogroup\\|// --SECTION--\\|/// @page\\|/// @}\\)"
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// End:
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