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Copy pathstring.js
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127 lines (114 loc) · 4.03 KB
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/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @fileoverview This file contains objects strings.
*/
tdl.provide('tdl.string');
/**
* A module for string.
* @namespace
*/
tdl.string = tdl.string || {};
/**
* Whether a haystack ends with a needle.
* @param {string} haystack String to search
* @param {string} needle String to search for.
* @param {boolean} True if haystack ends with needle.
*/
tdl.string.endsWith = function(haystack, needle) {
return haystack.substr(haystack.length - needle.length) === needle;
};
/**
* Whether a haystack starts with a needle.
* @param {string} haystack String to search
* @param {string} needle String to search for.
* @param {boolean} True if haystack starts with needle.
*/
tdl.string.startsWith = function(haystack, needle) {
return haystack.substr(0, needle.length) === needle;
};
/**
* Converts a non-homogenious array into a string.
* @param {!Array.<*>} args Args to turn into a string
*/
tdl.string.argsToString = function(args) {
var lastArgWasNumber = false;
var numArgs = args.length;
var strs = [];
for (var ii = 0; ii < numArgs; ++ii) {
var arg = args[ii];
if (arg === undefined) {
strs.push('undefined');
} else if (typeof arg == 'number') {
if (lastArgWasNumber) {
strs.push(", ");
}
if (arg == Math.floor(arg)) {
strs.push(arg.toFixed(0));
} else {
strs.push(arg.toFixed(3));
}
lastArgWasNumber = true;
} else if (window.Float32Array && arg instanceof Float32Array) {
// TODO(gman): Make this handle other types of arrays.
strs.push(tdl.string.argsToString(arg));
} else {
strs.push(arg.toString());
lastArgWasNumber = false;
}
}
return strs.join("");
};
/**
* Converts an object into a string. Similar to JSON.stringify but just used
* for debugging.
*/
tdl.string.objToString = function(obj, opt_prefix) {
var strs = [];
function objToString(obj, opt_prefix) {
opt_prefix = opt_prefix || "";
if (typeof obj == 'object') {
if (obj.length !== undefined) {
for (var ii = 0; ii < obj.length; ++ii) {
objToString(obj[ii], opt_prefix + "[" + ii + "]");
}
} else {
for (var name in obj) {
objToString(obj[name], opt_prefix + "." + name);
}
}
} else {
strs.push(tdl.string.argsToString([opt_prefix, ": ", obj]));
}
}
objToString(obj);
return strs.join("\n");
};