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| <pre><span class="source-line-no">001</span><span id="line-1">// ***************************************************************************************************************************</span> |
| <span class="source-line-no">002</span><span id="line-2">// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file *</span> |
| <span class="source-line-no">003</span><span id="line-3">// * distributed with this work for additional information regarding copyright ownership. The ASF licenses this file *</span> |
| <span class="source-line-no">004</span><span id="line-4">// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance *</span> |
| <span class="source-line-no">005</span><span id="line-5">// * with the License. You may obtain a copy of the License at *</span> |
| <span class="source-line-no">006</span><span id="line-6">// * *</span> |
| <span class="source-line-no">007</span><span id="line-7">// * http://www.apache.org/licenses/LICENSE-2.0 *</span> |
| <span class="source-line-no">008</span><span id="line-8">// * *</span> |
| <span class="source-line-no">009</span><span id="line-9">// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an *</span> |
| <span class="source-line-no">010</span><span id="line-10">// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the *</span> |
| <span class="source-line-no">011</span><span id="line-11">// * specific language governing permissions and limitations under the License. *</span> |
| <span class="source-line-no">012</span><span id="line-12">// ***************************************************************************************************************************</span> |
| <span class="source-line-no">013</span><span id="line-13">package org.apache.juneau.svl;</span> |
| <span class="source-line-no">014</span><span id="line-14"></span> |
| <span class="source-line-no">015</span><span id="line-15">import static org.apache.juneau.common.internal.StringUtils.*;</span> |
| <span class="source-line-no">016</span><span id="line-16">import static org.apache.juneau.common.internal.ThrowableUtils.*;</span> |
| <span class="source-line-no">017</span><span id="line-17"></span> |
| <span class="source-line-no">018</span><span id="line-18">import java.io.*;</span> |
| <span class="source-line-no">019</span><span id="line-19">import java.lang.reflect.*;</span> |
| <span class="source-line-no">020</span><span id="line-20">import java.util.*;</span> |
| <span class="source-line-no">021</span><span id="line-21"></span> |
| <span class="source-line-no">022</span><span id="line-22">import org.apache.juneau.common.internal.*;</span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.juneau.cp.*;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.juneau.internal.*;</span> |
| <span class="source-line-no">025</span><span id="line-25"></span> |
| <span class="source-line-no">026</span><span id="line-26">/**</span> |
| <span class="source-line-no">027</span><span id="line-27"> * A var resolver session that combines a {@link VarResolver} with one or more session objects.</span> |
| <span class="source-line-no">028</span><span id="line-28"> *</span> |
| <span class="source-line-no">029</span><span id="line-29"> * <p></span> |
| <span class="source-line-no">030</span><span id="line-30"> * Instances of this class are considered light-weight and fast to construct, use, and discard.</span> |
| <span class="source-line-no">031</span><span id="line-31"> *</span> |
| <span class="source-line-no">032</span><span id="line-32"> * <p></span> |
| <span class="source-line-no">033</span><span id="line-33"> * This class contains the workhorse code for var resolution.</span> |
| <span class="source-line-no">034</span><span id="line-34"> *</span> |
| <span class="source-line-no">035</span><span id="line-35"> * <p></span> |
| <span class="source-line-no">036</span><span id="line-36"> * Instances of this class are created through the {@link VarResolver#createSession()} and</span> |
| <span class="source-line-no">037</span><span id="line-37"> * {@link VarResolver#createSession(BeanStore)} methods.</span> |
| <span class="source-line-no">038</span><span id="line-38"> *</span> |
| <span class="source-line-no">039</span><span id="line-39"> * <h5 class='section'>Notes:</h5><ul></span> |
| <span class="source-line-no">040</span><span id="line-40"> * <li class='warn'>This class is not guaranteed to be thread safe.</span> |
| <span class="source-line-no">041</span><span id="line-41"> * </ul></span> |
| <span class="source-line-no">042</span><span id="line-42"> *</span> |
| <span class="source-line-no">043</span><span id="line-43"> * <h5 class='section'>See Also:</h5><ul></span> |
| <span class="source-line-no">044</span><span id="line-44"> * <li class='link'><a class="doclink" href="../../../../index.html#jm.SimpleVariableLanguage">Simple Variable Language</a></span> |
| <span class="source-line-no">045</span><span id="line-45"> * </ul></span> |
| <span class="source-line-no">046</span><span id="line-46"> */</span> |
| <span class="source-line-no">047</span><span id="line-47">public class VarResolverSession {</span> |
| <span class="source-line-no">048</span><span id="line-48"></span> |
| <span class="source-line-no">049</span><span id="line-49"> private final VarResolver context;</span> |
| <span class="source-line-no">050</span><span id="line-50"> private final BeanStore beanStore;</span> |
| <span class="source-line-no">051</span><span id="line-51"></span> |
| <span class="source-line-no">052</span><span id="line-52"> /**</span> |
| <span class="source-line-no">053</span><span id="line-53"> * Constructor.</span> |
| <span class="source-line-no">054</span><span id="line-54"> *</span> |
| <span class="source-line-no">055</span><span id="line-55"> * @param context</span> |
| <span class="source-line-no">056</span><span id="line-56"> * The {@link VarResolver} context object that contains the {@link Var Vars} and context objects associated with</span> |
| <span class="source-line-no">057</span><span id="line-57"> * that resolver.</span> |
| <span class="source-line-no">058</span><span id="line-58"> * @param beanStore The bean store to use for resolving beans needed by vars.</span> |
| <span class="source-line-no">059</span><span id="line-59"> *</span> |
| <span class="source-line-no">060</span><span id="line-60"> */</span> |
| <span class="source-line-no">061</span><span id="line-61"> public VarResolverSession(VarResolver context, BeanStore beanStore) {</span> |
| <span class="source-line-no">062</span><span id="line-62"> this.context = context;</span> |
| <span class="source-line-no">063</span><span id="line-63"> this.beanStore = BeanStore.of(beanStore);</span> |
| <span class="source-line-no">064</span><span id="line-64"> }</span> |
| <span class="source-line-no">065</span><span id="line-65"></span> |
| <span class="source-line-no">066</span><span id="line-66"> /**</span> |
| <span class="source-line-no">067</span><span id="line-67"> * Resolve all variables in the specified string.</span> |
| <span class="source-line-no">068</span><span id="line-68"> *</span> |
| <span class="source-line-no">069</span><span id="line-69"> * @param s</span> |
| <span class="source-line-no">070</span><span id="line-70"> * The string to resolve variables in.</span> |
| <span class="source-line-no">071</span><span id="line-71"> * @return</span> |
| <span class="source-line-no">072</span><span id="line-72"> * The new string with all variables resolved, or the same string if no variables were found.</span> |
| <span class="source-line-no">073</span><span id="line-73"> * <br>Returns <jk>null</jk> if the input was <jk>null</jk>.</span> |
| <span class="source-line-no">074</span><span id="line-74"> */</span> |
| <span class="source-line-no">075</span><span id="line-75"> public String resolve(String s) {</span> |
| <span class="source-line-no">076</span><span id="line-76"></span> |
| <span class="source-line-no">077</span><span id="line-77"> if (s == null || s.isEmpty() || (s.indexOf('$') == -1 && s.indexOf('\\') == -1))</span> |
| <span class="source-line-no">078</span><span id="line-78"> return s;</span> |
| <span class="source-line-no">079</span><span id="line-79"></span> |
| <span class="source-line-no">080</span><span id="line-80"> // Special case where value consists of a single variable with no embedded variables (e.g. "$X{...}").</span> |
| <span class="source-line-no">081</span><span id="line-81"> // This is a common case, so we want an optimized solution that doesn't involve string builders.</span> |
| <span class="source-line-no">082</span><span id="line-82"> if (isSimpleVar(s)) {</span> |
| <span class="source-line-no">083</span><span id="line-83"> String var = s.substring(1, s.indexOf('{'));</span> |
| <span class="source-line-no">084</span><span id="line-84"> String val = s.substring(s.indexOf('{')+1, s.length()-1);</span> |
| <span class="source-line-no">085</span><span id="line-85"> Var v = getVar(var);</span> |
| <span class="source-line-no">086</span><span id="line-86"> if (v != null) {</span> |
| <span class="source-line-no">087</span><span id="line-87"> try {</span> |
| <span class="source-line-no">088</span><span id="line-88"> if (v.streamed) {</span> |
| <span class="source-line-no">089</span><span id="line-89"> StringWriter sw = new StringWriter();</span> |
| <span class="source-line-no">090</span><span id="line-90"> v.resolveTo(this, sw, val);</span> |
| <span class="source-line-no">091</span><span id="line-91"> return sw.toString();</span> |
| <span class="source-line-no">092</span><span id="line-92"> }</span> |
| <span class="source-line-no">093</span><span id="line-93"> s = v.doResolve(this, val);</span> |
| <span class="source-line-no">094</span><span id="line-94"> if (s == null)</span> |
| <span class="source-line-no">095</span><span id="line-95"> s = "";</span> |
| <span class="source-line-no">096</span><span id="line-96"> return (v.allowRecurse() ? resolve(s) : s);</span> |
| <span class="source-line-no">097</span><span id="line-97"> } catch (VarResolverException e) {</span> |
| <span class="source-line-no">098</span><span id="line-98"> throw e;</span> |
| <span class="source-line-no">099</span><span id="line-99"> } catch (Exception e) {</span> |
| <span class="source-line-no">100</span><span id="line-100"> throw new VarResolverException(e, "Problem occurred resolving variable ''{0}'' in string ''{1}''", var, s);</span> |
| <span class="source-line-no">101</span><span id="line-101"> }</span> |
| <span class="source-line-no">102</span><span id="line-102"> }</span> |
| <span class="source-line-no">103</span><span id="line-103"> return s;</span> |
| <span class="source-line-no">104</span><span id="line-104"> }</span> |
| <span class="source-line-no">105</span><span id="line-105"></span> |
| <span class="source-line-no">106</span><span id="line-106"> try {</span> |
| <span class="source-line-no">107</span><span id="line-107"> return resolveTo(s, new StringWriter()).toString();</span> |
| <span class="source-line-no">108</span><span id="line-108"> } catch (IOException e) {</span> |
| <span class="source-line-no">109</span><span id="line-109"> throw asRuntimeException(e); // Never happens.</span> |
| <span class="source-line-no">110</span><span id="line-110"> }</span> |
| <span class="source-line-no">111</span><span id="line-111"> }</span> |
| <span class="source-line-no">112</span><span id="line-112"></span> |
| <span class="source-line-no">113</span><span id="line-113"> /**</span> |
| <span class="source-line-no">114</span><span id="line-114"> * Convenience method for resolving variables in arbitrary objects.</span> |
| <span class="source-line-no">115</span><span id="line-115"> *</span> |
| <span class="source-line-no">116</span><span id="line-116"> * <p></span> |
| <span class="source-line-no">117</span><span id="line-117"> * Supports resolving variables in the following object types:</span> |
| <span class="source-line-no">118</span><span id="line-118"> * <ul></span> |
| <span class="source-line-no">119</span><span id="line-119"> * <li>{@link CharSequence}</span> |
| <span class="source-line-no">120</span><span id="line-120"> * <li>Arrays containing values of type {@link CharSequence}.</span> |
| <span class="source-line-no">121</span><span id="line-121"> * <li>Collections containing values of type {@link CharSequence}.</span> |
| <span class="source-line-no">122</span><span id="line-122"> * <br>Collection class must have a no-arg constructor.</span> |
| <span class="source-line-no">123</span><span id="line-123"> * <li>Maps containing values of type {@link CharSequence}.</span> |
| <span class="source-line-no">124</span><span id="line-124"> * <br>Map class must have a no-arg constructor.</span> |
| <span class="source-line-no">125</span><span id="line-125"> * </ul></span> |
| <span class="source-line-no">126</span><span id="line-126"> *</span> |
| <span class="source-line-no">127</span><span id="line-127"> * @param <T> The value type.</span> |
| <span class="source-line-no">128</span><span id="line-128"> * @param o The object.</span> |
| <span class="source-line-no">129</span><span id="line-129"> * @return The same object if no resolution was needed, otherwise a new object or data structure if resolution was</span> |
| <span class="source-line-no">130</span><span id="line-130"> * needed.</span> |
| <span class="source-line-no">131</span><span id="line-131"> */</span> |
| <span class="source-line-no">132</span><span id="line-132"> @SuppressWarnings({ "rawtypes", "unchecked" })</span> |
| <span class="source-line-no">133</span><span id="line-133"> public <T> T resolve(T o) {</span> |
| <span class="source-line-no">134</span><span id="line-134"> if (o == null)</span> |
| <span class="source-line-no">135</span><span id="line-135"> return null;</span> |
| <span class="source-line-no">136</span><span id="line-136"> if (o instanceof CharSequence)</span> |
| <span class="source-line-no">137</span><span id="line-137"> return (T)resolve(o.toString());</span> |
| <span class="source-line-no">138</span><span id="line-138"> if (o.getClass().isArray()) {</span> |
| <span class="source-line-no">139</span><span id="line-139"> if (! containsVars(o))</span> |
| <span class="source-line-no">140</span><span id="line-140"> return o;</span> |
| <span class="source-line-no">141</span><span id="line-141"> Object o2 = Array.newInstance(o.getClass().getComponentType(), Array.getLength(o));</span> |
| <span class="source-line-no">142</span><span id="line-142"> for (int i = 0; i < Array.getLength(o); i++)</span> |
| <span class="source-line-no">143</span><span id="line-143"> Array.set(o2, i, resolve(Array.get(o, i)));</span> |
| <span class="source-line-no">144</span><span id="line-144"> return (T)o2;</span> |
| <span class="source-line-no">145</span><span id="line-145"> }</span> |
| <span class="source-line-no">146</span><span id="line-146"> if (o instanceof Collection) {</span> |
| <span class="source-line-no">147</span><span id="line-147"> try {</span> |
| <span class="source-line-no">148</span><span id="line-148"> Collection c = (Collection)o;</span> |
| <span class="source-line-no">149</span><span id="line-149"> if (! containsVars(c))</span> |
| <span class="source-line-no">150</span><span id="line-150"> return o;</span> |
| <span class="source-line-no">151</span><span id="line-151"> Collection c2 = c.getClass().getDeclaredConstructor().newInstance();</span> |
| <span class="source-line-no">152</span><span id="line-152"> c.forEach(x -> c2.add(resolve(x)));</span> |
| <span class="source-line-no">153</span><span id="line-153"> return (T)c2;</span> |
| <span class="source-line-no">154</span><span id="line-154"> } catch (VarResolverException e) {</span> |
| <span class="source-line-no">155</span><span id="line-155"> throw e;</span> |
| <span class="source-line-no">156</span><span id="line-156"> } catch (Exception e) {</span> |
| <span class="source-line-no">157</span><span id="line-157"> throw new VarResolverException(e, "Problem occurred resolving collection.");</span> |
| <span class="source-line-no">158</span><span id="line-158"> }</span> |
| <span class="source-line-no">159</span><span id="line-159"> }</span> |
| <span class="source-line-no">160</span><span id="line-160"> if (o instanceof Map) {</span> |
| <span class="source-line-no">161</span><span id="line-161"> try {</span> |
| <span class="source-line-no">162</span><span id="line-162"> Map m = (Map)o;</span> |
| <span class="source-line-no">163</span><span id="line-163"> if (! containsVars(m))</span> |
| <span class="source-line-no">164</span><span id="line-164"> return o;</span> |
| <span class="source-line-no">165</span><span id="line-165"> Map m2 = m.getClass().getDeclaredConstructor().newInstance();</span> |
| <span class="source-line-no">166</span><span id="line-166"> m.forEach((k,v) -> m2.put(k, resolve(v)));</span> |
| <span class="source-line-no">167</span><span id="line-167"> return (T)m2;</span> |
| <span class="source-line-no">168</span><span id="line-168"> } catch (VarResolverException e) {</span> |
| <span class="source-line-no">169</span><span id="line-169"> throw e;</span> |
| <span class="source-line-no">170</span><span id="line-170"> } catch (Exception e) {</span> |
| <span class="source-line-no">171</span><span id="line-171"> throw new VarResolverException(e, "Problem occurred resolving map.");</span> |
| <span class="source-line-no">172</span><span id="line-172"> }</span> |
| <span class="source-line-no">173</span><span id="line-173"> }</span> |
| <span class="source-line-no">174</span><span id="line-174"> return o;</span> |
| <span class="source-line-no">175</span><span id="line-175"> }</span> |
| <span class="source-line-no">176</span><span id="line-176"></span> |
| <span class="source-line-no">177</span><span id="line-177"> private static boolean containsVars(Object array) {</span> |
| <span class="source-line-no">178</span><span id="line-178"> for (int i = 0; i < Array.getLength(array); i++) {</span> |
| <span class="source-line-no">179</span><span id="line-179"> Object o = Array.get(array, i);</span> |
| <span class="source-line-no">180</span><span id="line-180"> if (o instanceof CharSequence && o.toString().contains("$"))</span> |
| <span class="source-line-no">181</span><span id="line-181"> return true;</span> |
| <span class="source-line-no">182</span><span id="line-182"> }</span> |
| <span class="source-line-no">183</span><span id="line-183"> return false;</span> |
| <span class="source-line-no">184</span><span id="line-184"> }</span> |
| <span class="source-line-no">185</span><span id="line-185"></span> |
| <span class="source-line-no">186</span><span id="line-186"> private static boolean containsVars(Collection<?> c) {</span> |
| <span class="source-line-no">187</span><span id="line-187"> Flag f = Flag.create();</span> |
| <span class="source-line-no">188</span><span id="line-188"> c.forEach(x -> {</span> |
| <span class="source-line-no">189</span><span id="line-189"> if (x instanceof CharSequence && x.toString().contains("$"))</span> |
| <span class="source-line-no">190</span><span id="line-190"> f.set();</span> |
| <span class="source-line-no">191</span><span id="line-191"> });</span> |
| <span class="source-line-no">192</span><span id="line-192"> return f.isSet();</span> |
| <span class="source-line-no">193</span><span id="line-193"> }</span> |
| <span class="source-line-no">194</span><span id="line-194"></span> |
| <span class="source-line-no">195</span><span id="line-195"> private static boolean containsVars(Map<?,?> m) {</span> |
| <span class="source-line-no">196</span><span id="line-196"> Flag f = Flag.create();</span> |
| <span class="source-line-no">197</span><span id="line-197"> m.forEach((k,v) -> {</span> |
| <span class="source-line-no">198</span><span id="line-198"> if (v instanceof CharSequence && v.toString().contains("$"))</span> |
| <span class="source-line-no">199</span><span id="line-199"> f.set();</span> |
| <span class="source-line-no">200</span><span id="line-200"> });</span> |
| <span class="source-line-no">201</span><span id="line-201"> return f.isSet();</span> |
| <span class="source-line-no">202</span><span id="line-202"> }</span> |
| <span class="source-line-no">203</span><span id="line-203"></span> |
| <span class="source-line-no">204</span><span id="line-204"> /*</span> |
| <span class="source-line-no">205</span><span id="line-205"> * Checks to see if string is of the simple form "$X{...}" with no embedded variables.</span> |
| <span class="source-line-no">206</span><span id="line-206"> * This is a common case, and we can avoid using StringWriters.</span> |
| <span class="source-line-no">207</span><span id="line-207"> */</span> |
| <span class="source-line-no">208</span><span id="line-208"> private static boolean isSimpleVar(String s) {</span> |
| <span class="source-line-no">209</span><span id="line-209"> int S1 = 1; // Not in variable, looking for $</span> |
| <span class="source-line-no">210</span><span id="line-210"> int S2 = 2; // Found $, Looking for {</span> |
| <span class="source-line-no">211</span><span id="line-211"> int S3 = 3; // Found {, Looking for }</span> |
| <span class="source-line-no">212</span><span id="line-212"> int S4 = 4; // Found }</span> |
| <span class="source-line-no">213</span><span id="line-213"></span> |
| <span class="source-line-no">214</span><span id="line-214"> int length = s.length();</span> |
| <span class="source-line-no">215</span><span id="line-215"> int state = S1;</span> |
| <span class="source-line-no">216</span><span id="line-216"> for (int i = 0; i < length; i++) {</span> |
| <span class="source-line-no">217</span><span id="line-217"> char c = s.charAt(i);</span> |
| <span class="source-line-no">218</span><span id="line-218"> if (state == S1) {</span> |
| <span class="source-line-no">219</span><span id="line-219"> if (c == '$') {</span> |
| <span class="source-line-no">220</span><span id="line-220"> state = S2;</span> |
| <span class="source-line-no">221</span><span id="line-221"> } else {</span> |
| <span class="source-line-no">222</span><span id="line-222"> return false;</span> |
| <span class="source-line-no">223</span><span id="line-223"> }</span> |
| <span class="source-line-no">224</span><span id="line-224"> } else if (state == S2) {</span> |
| <span class="source-line-no">225</span><span id="line-225"> if (c == '{') {</span> |
| <span class="source-line-no">226</span><span id="line-226"> state = S3;</span> |
| <span class="source-line-no">227</span><span id="line-227"> } else if (c < 'A' || c > 'z' || (c > 'Z' && c < 'a')) { // False trigger "$X "</span> |
| <span class="source-line-no">228</span><span id="line-228"> return false;</span> |
| <span class="source-line-no">229</span><span id="line-229"> }</span> |
| <span class="source-line-no">230</span><span id="line-230"> } else if (state == S3) {</span> |
| <span class="source-line-no">231</span><span id="line-231"> if (c == '}')</span> |
| <span class="source-line-no">232</span><span id="line-232"> state = S4;</span> |
| <span class="source-line-no">233</span><span id="line-233"> else if (c == '{' || c == '$')</span> |
| <span class="source-line-no">234</span><span id="line-234"> return false;</span> |
| <span class="source-line-no">235</span><span id="line-235"> } else if (state == S4) {</span> |
| <span class="source-line-no">236</span><span id="line-236"> return false;</span> |
| <span class="source-line-no">237</span><span id="line-237"> }</span> |
| <span class="source-line-no">238</span><span id="line-238"> }</span> |
| <span class="source-line-no">239</span><span id="line-239"> return state == S4;</span> |
| <span class="source-line-no">240</span><span id="line-240"> }</span> |
| <span class="source-line-no">241</span><span id="line-241"></span> |
| <span class="source-line-no">242</span><span id="line-242"> /**</span> |
| <span class="source-line-no">243</span><span id="line-243"> * Resolves variables in the specified string and sends the output to the specified writer.</span> |
| <span class="source-line-no">244</span><span id="line-244"> *</span> |
| <span class="source-line-no">245</span><span id="line-245"> * <p></span> |
| <span class="source-line-no">246</span><span id="line-246"> * More efficient than first parsing to a string and then serializing to the writer since this method doesn't need</span> |
| <span class="source-line-no">247</span><span id="line-247"> * to construct a large string.</span> |
| <span class="source-line-no">248</span><span id="line-248"> *</span> |
| <span class="source-line-no">249</span><span id="line-249"> * @param s The string to resolve variables in.</span> |
| <span class="source-line-no">250</span><span id="line-250"> * @param out The writer to write to.</span> |
| <span class="source-line-no">251</span><span id="line-251"> * @return The same writer.</span> |
| <span class="source-line-no">252</span><span id="line-252"> * @throws IOException Thrown by underlying stream.</span> |
| <span class="source-line-no">253</span><span id="line-253"> */</span> |
| <span class="source-line-no">254</span><span id="line-254"> public Writer resolveTo(String s, Writer out) throws IOException {</span> |
| <span class="source-line-no">255</span><span id="line-255"></span> |
| <span class="source-line-no">256</span><span id="line-256"> int S1 = 1; // Not in variable, looking for $</span> |
| <span class="source-line-no">257</span><span id="line-257"> int S2 = 2; // Found $, Looking for {</span> |
| <span class="source-line-no">258</span><span id="line-258"> int S3 = 3; // Found {, Looking for }</span> |
| <span class="source-line-no">259</span><span id="line-259"></span> |
| <span class="source-line-no">260</span><span id="line-260"> int state = S1;</span> |
| <span class="source-line-no">261</span><span id="line-261"> boolean isInEscape = false;</span> |
| <span class="source-line-no">262</span><span id="line-262"> boolean hasInternalVar = false;</span> |
| <span class="source-line-no">263</span><span id="line-263"> boolean hasInnerEscapes = false;</span> |
| <span class="source-line-no">264</span><span id="line-264"> String varType = null;</span> |
| <span class="source-line-no">265</span><span id="line-265"> String varVal = null;</span> |
| <span class="source-line-no">266</span><span id="line-266"> int x = 0, x2 = 0;</span> |
| <span class="source-line-no">267</span><span id="line-267"> int depth = 0;</span> |
| <span class="source-line-no">268</span><span id="line-268"> int length = s.length();</span> |
| <span class="source-line-no">269</span><span id="line-269"> for (int i = 0; i < length; i++) {</span> |
| <span class="source-line-no">270</span><span id="line-270"> char c = s.charAt(i);</span> |
| <span class="source-line-no">271</span><span id="line-271"> if (state == S1) {</span> |
| <span class="source-line-no">272</span><span id="line-272"> if (isInEscape) {</span> |
| <span class="source-line-no">273</span><span id="line-273"> if (c == '\\' || c == '$') {</span> |
| <span class="source-line-no">274</span><span id="line-274"> out.append(c);</span> |
| <span class="source-line-no">275</span><span id="line-275"> } else {</span> |
| <span class="source-line-no">276</span><span id="line-276"> out.append('\\').append(c);</span> |
| <span class="source-line-no">277</span><span id="line-277"> }</span> |
| <span class="source-line-no">278</span><span id="line-278"> isInEscape = false;</span> |
| <span class="source-line-no">279</span><span id="line-279"> } else if (c == '\\') {</span> |
| <span class="source-line-no">280</span><span id="line-280"> isInEscape = true;</span> |
| <span class="source-line-no">281</span><span id="line-281"> } else if (c == '$') {</span> |
| <span class="source-line-no">282</span><span id="line-282"> x = i;</span> |
| <span class="source-line-no">283</span><span id="line-283"> x2 = i;</span> |
| <span class="source-line-no">284</span><span id="line-284"> state = S2;</span> |
| <span class="source-line-no">285</span><span id="line-285"> } else {</span> |
| <span class="source-line-no">286</span><span id="line-286"> out.append(c);</span> |
| <span class="source-line-no">287</span><span id="line-287"> }</span> |
| <span class="source-line-no">288</span><span id="line-288"> } else if (state == S2) {</span> |
| <span class="source-line-no">289</span><span id="line-289"> if (isInEscape) {</span> |
| <span class="source-line-no">290</span><span id="line-290"> isInEscape = false;</span> |
| <span class="source-line-no">291</span><span id="line-291"> } else if (c == '\\') {</span> |
| <span class="source-line-no">292</span><span id="line-292"> hasInnerEscapes = true;</span> |
| <span class="source-line-no">293</span><span id="line-293"> isInEscape = true;</span> |
| <span class="source-line-no">294</span><span id="line-294"> } else if (c == '{') {</span> |
| <span class="source-line-no">295</span><span id="line-295"> varType = s.substring(x+1, i);</span> |
| <span class="source-line-no">296</span><span id="line-296"> x = i;</span> |
| <span class="source-line-no">297</span><span id="line-297"> state = S3;</span> |
| <span class="source-line-no">298</span><span id="line-298"> } else if (c < 'A' || c > 'z' || (c > 'Z' && c < 'a')) { // False trigger "$X "</span> |
| <span class="source-line-no">299</span><span id="line-299"> if (hasInnerEscapes)</span> |
| <span class="source-line-no">300</span><span id="line-300"> out.append(unEscapeChars(s.substring(x, i+1), AS1));</span> |
| <span class="source-line-no">301</span><span id="line-301"> else</span> |
| <span class="source-line-no">302</span><span id="line-302"> out.append(s, x, i+1);</span> |
| <span class="source-line-no">303</span><span id="line-303"> x = i + 1;</span> |
| <span class="source-line-no">304</span><span id="line-304"> state = S1;</span> |
| <span class="source-line-no">305</span><span id="line-305"> hasInnerEscapes = false;</span> |
| <span class="source-line-no">306</span><span id="line-306"> }</span> |
| <span class="source-line-no">307</span><span id="line-307"> } else if (state == S3) {</span> |
| <span class="source-line-no">308</span><span id="line-308"> if (isInEscape) {</span> |
| <span class="source-line-no">309</span><span id="line-309"> isInEscape = false;</span> |
| <span class="source-line-no">310</span><span id="line-310"> } else if (c == '\\') {</span> |
| <span class="source-line-no">311</span><span id="line-311"> isInEscape = true;</span> |
| <span class="source-line-no">312</span><span id="line-312"> hasInnerEscapes = true;</span> |
| <span class="source-line-no">313</span><span id="line-313"> } else if (c == '{') {</span> |
| <span class="source-line-no">314</span><span id="line-314"> depth++;</span> |
| <span class="source-line-no">315</span><span id="line-315"> hasInternalVar = true;</span> |
| <span class="source-line-no">316</span><span id="line-316"> } else if (c == '}') {</span> |
| <span class="source-line-no">317</span><span id="line-317"> if (depth > 0) {</span> |
| <span class="source-line-no">318</span><span id="line-318"> depth--;</span> |
| <span class="source-line-no">319</span><span id="line-319"> } else {</span> |
| <span class="source-line-no">320</span><span id="line-320"> varVal = s.substring(x+1, i);</span> |
| <span class="source-line-no">321</span><span id="line-321"> Var r = getVar(varType);</span> |
| <span class="source-line-no">322</span><span id="line-322"> if (r == null) {</span> |
| <span class="source-line-no">323</span><span id="line-323"> if (hasInnerEscapes)</span> |
| <span class="source-line-no">324</span><span id="line-324"> out.append(unEscapeChars(s.substring(x2, i+1), AS2));</span> |
| <span class="source-line-no">325</span><span id="line-325"> else</span> |
| <span class="source-line-no">326</span><span id="line-326"> out.append(s, x2, i+1);</span> |
| <span class="source-line-no">327</span><span id="line-327"> x = i+1;</span> |
| <span class="source-line-no">328</span><span id="line-328"> } else {</span> |
| <span class="source-line-no">329</span><span id="line-329"> varVal = (hasInternalVar && r.allowNested() ? resolve(varVal) : varVal);</span> |
| <span class="source-line-no">330</span><span id="line-330"> try {</span> |
| <span class="source-line-no">331</span><span id="line-331"> if (r.streamed)</span> |
| <span class="source-line-no">332</span><span id="line-332"> r.resolveTo(this, out, varVal);</span> |
| <span class="source-line-no">333</span><span id="line-333"> else {</span> |
| <span class="source-line-no">334</span><span id="line-334"> String replacement = r.doResolve(this, varVal);</span> |
| <span class="source-line-no">335</span><span id="line-335"> if (replacement == null)</span> |
| <span class="source-line-no">336</span><span id="line-336"> replacement = "";</span> |
| <span class="source-line-no">337</span><span id="line-337"> // If the replacement also contains variables, replace them now.</span> |
| <span class="source-line-no">338</span><span id="line-338"> if (replacement.indexOf('$') != -1 && r.allowRecurse())</span> |
| <span class="source-line-no">339</span><span id="line-339"> replacement = resolve(replacement);</span> |
| <span class="source-line-no">340</span><span id="line-340"> out.append(replacement);</span> |
| <span class="source-line-no">341</span><span id="line-341"> }</span> |
| <span class="source-line-no">342</span><span id="line-342"> } catch (VarResolverException e) {</span> |
| <span class="source-line-no">343</span><span id="line-343"> throw e;</span> |
| <span class="source-line-no">344</span><span id="line-344"> } catch (Exception e) {</span> |
| <span class="source-line-no">345</span><span id="line-345"> throw new VarResolverException(e, "Problem occurred resolving variable ''{0}'' in string ''{1}''", varType, s);</span> |
| <span class="source-line-no">346</span><span id="line-346"> }</span> |
| <span class="source-line-no">347</span><span id="line-347"> x = i+1;</span> |
| <span class="source-line-no">348</span><span id="line-348"> }</span> |
| <span class="source-line-no">349</span><span id="line-349"> state = 1;</span> |
| <span class="source-line-no">350</span><span id="line-350"> hasInnerEscapes = false;</span> |
| <span class="source-line-no">351</span><span id="line-351"> }</span> |
| <span class="source-line-no">352</span><span id="line-352"> }</span> |
| <span class="source-line-no">353</span><span id="line-353"> }</span> |
| <span class="source-line-no">354</span><span id="line-354"> }</span> |
| <span class="source-line-no">355</span><span id="line-355"> if (isInEscape)</span> |
| <span class="source-line-no">356</span><span id="line-356"> out.append('\\');</span> |
| <span class="source-line-no">357</span><span id="line-357"> else if (state == S2)</span> |
| <span class="source-line-no">358</span><span id="line-358"> out.append('$').append(unEscapeChars(s.substring(x+1), AS1));</span> |
| <span class="source-line-no">359</span><span id="line-359"> else if (state == S3)</span> |
| <span class="source-line-no">360</span><span id="line-360"> out.append('$').append(varType).append('{').append(unEscapeChars(s.substring(x+1), AS2));</span> |
| <span class="source-line-no">361</span><span id="line-361"> return out;</span> |
| <span class="source-line-no">362</span><span id="line-362"> }</span> |
| <span class="source-line-no">363</span><span id="line-363"></span> |
| <span class="source-line-no">364</span><span id="line-364"> private static final AsciiSet</span> |
| <span class="source-line-no">365</span><span id="line-365"> AS1 = AsciiSet.create("\\{"),</span> |
| <span class="source-line-no">366</span><span id="line-366"> AS2 = AsciiSet.create("\\${}")</span> |
| <span class="source-line-no">367</span><span id="line-367"> ;</span> |
| <span class="source-line-no">368</span><span id="line-368"></span> |
| <span class="source-line-no">369</span><span id="line-369"> /**</span> |
| <span class="source-line-no">370</span><span id="line-370"> * Returns the bean from the registered bean store.</span> |
| <span class="source-line-no">371</span><span id="line-371"> *</span> |
| <span class="source-line-no">372</span><span id="line-372"> * @param <T> The value type.</span> |
| <span class="source-line-no">373</span><span id="line-373"> * @param c The bean type.</span> |
| <span class="source-line-no">374</span><span id="line-374"> * @return</span> |
| <span class="source-line-no">375</span><span id="line-375"> * The bean.</span> |
| <span class="source-line-no">376</span><span id="line-376"> * <br>Never <jk>null</jk>.</span> |
| <span class="source-line-no">377</span><span id="line-377"> */</span> |
| <span class="source-line-no">378</span><span id="line-378"> public <T> Optional<T> getBean(Class<T> c) {</span> |
| <span class="source-line-no">379</span><span id="line-379"> Optional<T> t = beanStore.getBean(c);</span> |
| <span class="source-line-no">380</span><span id="line-380"> if (! t.isPresent())</span> |
| <span class="source-line-no">381</span><span id="line-381"> t = context.beanStore.getBean(c);</span> |
| <span class="source-line-no">382</span><span id="line-382"> return t;</span> |
| <span class="source-line-no">383</span><span id="line-383"> }</span> |
| <span class="source-line-no">384</span><span id="line-384"></span> |
| <span class="source-line-no">385</span><span id="line-385"> /**</span> |
| <span class="source-line-no">386</span><span id="line-386"> * Returns the {@link Var} with the specified name.</span> |
| <span class="source-line-no">387</span><span id="line-387"> *</span> |
| <span class="source-line-no">388</span><span id="line-388"> * @param name The var name (e.g. <js>"S"</js>).</span> |
| <span class="source-line-no">389</span><span id="line-389"> * @return The {@link Var} instance, or <jk>null</jk> if no <c>Var</c> is associated with the specified name.</span> |
| <span class="source-line-no">390</span><span id="line-390"> */</span> |
| <span class="source-line-no">391</span><span id="line-391"> protected Var getVar(String name) {</span> |
| <span class="source-line-no">392</span><span id="line-392"> Var v = this.context.getVarMap().get(name);</span> |
| <span class="source-line-no">393</span><span id="line-393"> return v != null && v.canResolve(this) ? v : null;</span> |
| <span class="source-line-no">394</span><span id="line-394"> }</span> |
| <span class="source-line-no">395</span><span id="line-395"></span> |
| <span class="source-line-no">396</span><span id="line-396"> /**</span> |
| <span class="source-line-no">397</span><span id="line-397"> * Resolves the specified strings in the string array.</span> |
| <span class="source-line-no">398</span><span id="line-398"> *</span> |
| <span class="source-line-no">399</span><span id="line-399"> * @param in The string array containing variables to resolve.</span> |
| <span class="source-line-no">400</span><span id="line-400"> * @return An array with resolved strings.</span> |
| <span class="source-line-no">401</span><span id="line-401"> */</span> |
| <span class="source-line-no">402</span><span id="line-402"> public String[] resolve(String[] in) {</span> |
| <span class="source-line-no">403</span><span id="line-403"> String[] out = new String[in.length];</span> |
| <span class="source-line-no">404</span><span id="line-404"> for (int i = 0; i < in.length; i++)</span> |
| <span class="source-line-no">405</span><span id="line-405"> out[i] = resolve(in[i]);</span> |
| <span class="source-line-no">406</span><span id="line-406"> return out;</span> |
| <span class="source-line-no">407</span><span id="line-407"> }</span> |
| <span class="source-line-no">408</span><span id="line-408"></span> |
| <span class="source-line-no">409</span><span id="line-409"> /**</span> |
| <span class="source-line-no">410</span><span id="line-410"> * Adds a bean to this session.</span> |
| <span class="source-line-no">411</span><span id="line-411"> *</span> |
| <span class="source-line-no">412</span><span id="line-412"> * @param <T> The bean type.</span> |
| <span class="source-line-no">413</span><span id="line-413"> * @param c The bean type.</span> |
| <span class="source-line-no">414</span><span id="line-414"> * @param value The bean.</span> |
| <span class="source-line-no">415</span><span id="line-415"> * @return This object.</span> |
| <span class="source-line-no">416</span><span id="line-416"> */</span> |
| <span class="source-line-no">417</span><span id="line-417"> public <T> VarResolverSession bean(Class<T> c, T value) {</span> |
| <span class="source-line-no">418</span><span id="line-418"> beanStore.addBean(c, value);</span> |
| <span class="source-line-no">419</span><span id="line-419"> return this;</span> |
| <span class="source-line-no">420</span><span id="line-420"> }</span> |
| <span class="source-line-no">421</span><span id="line-421"></span> |
| <span class="source-line-no">422</span><span id="line-422"> @Override /* Object */</span> |
| <span class="source-line-no">423</span><span id="line-423"> public String toString() {</span> |
| <span class="source-line-no">424</span><span id="line-424"> return "var=" + this.context.getVarMap().keySet() + ", context.beanStore=" + this.context.beanStore + ", session.beanStore=" + beanStore;</span> |
| <span class="source-line-no">425</span><span id="line-425"> }</span> |
| <span class="source-line-no">426</span><span id="line-426">}</span> |
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| </div> |
| </main> |
| </body> |
| </html> |
