parameterparser.html

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<a name="148" href="#148">148</a>         i2 = pos;
<a name="149" href="#149">149</a>         <strong>while</strong> (hasChar()) {
<a name="150" href="#150">150</a>             ch = chars[pos];
<a name="151" href="#151">151</a>             <strong>if</strong> (isOneOf(ch, terminators)) {
<a name="152" href="#152">152</a>                 <strong>break</strong>;
<a name="153" href="#153">153</a>             }
<a name="154" href="#154">154</a>             i2++;
<a name="155" href="#155">155</a>             pos++;
<a name="156" href="#156">156</a>         }
<a name="157" href="#157">157</a>         <strong>return</strong> getToken(false);
<a name="158" href="#158">158</a>     }
<a name="159" href="#159">159</a> 
<a name="160" href="#160">160</a>     <em>/**<em>*</em></em>
<a name="161" href="#161">161</a> <em>     * Parses out a token until any of the given terminators</em>
<a name="162" href="#162">162</a> <em>     * is encountered outside the quotation marks.</em>
<a name="163" href="#163">163</a> <em>     *</em>
<a name="164" href="#164">164</a> <em>     * @param terminators the array of terminating characters. Any of these</em>
<a name="165" href="#165">165</a> <em>     * characters when encountered outside the quotation marks signify the end</em>
<a name="166" href="#166">166</a> <em>     * of the token</em>
<a name="167" href="#167">167</a> <em>     *</em>
<a name="168" href="#168">168</a> <em>     * @return the token</em>
<a name="169" href="#169">169</a> <em>     */</em>
<a name="170" href="#170">170</a>     <strong>private</strong> String parseQuotedToken(<strong>final</strong> <strong>char</strong>[] terminators) {
<a name="171" href="#171">171</a>         <strong>char</strong> ch;
<a name="172" href="#172">172</a>         i1 = pos;
<a name="173" href="#173">173</a>         i2 = pos;
<a name="174" href="#174">174</a>         <strong>boolean</strong> quoted = false;
<a name="175" href="#175">175</a>         <strong>boolean</strong> charEscaped = false;
<a name="176" href="#176">176</a>         <strong>while</strong> (hasChar()) {
<a name="177" href="#177">177</a>             ch = chars[pos];
<a name="178" href="#178">178</a>             <strong>if</strong> (!quoted &amp;&amp; isOneOf(ch, terminators)) {
<a name="179" href="#179">179</a>                 <strong>break</strong>;
<a name="180" href="#180">180</a>             }
<a name="181" href="#181">181</a>             <strong>if</strong> (!charEscaped &amp;&amp; ch == '&quot;') {
<a name="182" href="#182">182</a>                 quoted = !quoted;
<a name="183" href="#183">183</a>             }
<a name="184" href="#184">184</a>             charEscaped = (!charEscaped &amp;&amp; ch == '&#47;&#47;');
<a name="185" href="#185">185</a>             i2++;
<a name="186" href="#186">186</a>             pos++;
<a name="187" href="#187">187</a> 
<a name="188" href="#188">188</a>         }
<a name="189" href="#189">189</a>         <strong>return</strong> getToken(<strong>true</strong>);
<a name="190" href="#190">190</a>     }
<a name="191" href="#191">191</a> 
<a name="192" href="#192">192</a>     <em>/**<em>*</em></em>
<a name="193" href="#193">193</a> <em>     * Returns &lt;tt>true&lt;/tt> if parameter names are to be converted to lower</em>
<a name="194" href="#194">194</a> <em>     * case when name/value pairs are parsed.</em>
<a name="195" href="#195">195</a> <em>     *</em>
<a name="196" href="#196">196</a> <em>     * @return &lt;tt>true&lt;/tt> if parameter names are to be</em>
<a name="197" href="#197">197</a> <em>     * converted to lower case when name/value pairs are parsed.</em>
<a name="198" href="#198">198</a> <em>     * Otherwise returns &lt;tt>false&lt;/tt></em>
<a name="199" href="#199">199</a> <em>     */</em>
<a name="200" href="#200">200</a>     <strong>public</strong> <strong>boolean</strong> isLowerCaseNames() {
<a name="201" href="#201">201</a>         <strong>return</strong> <strong>this</strong>.lowerCaseNames;
<a name="202" href="#202">202</a>     }
<a name="203" href="#203">203</a> 
<a name="204" href="#204">204</a>     <em>/**<em>*</em></em>
<a name="205" href="#205">205</a> <em>     * Sets the flag if parameter names are to be converted to lower case when</em>
<a name="206" href="#206">206</a> <em>     * name/value pairs are parsed.</em>
<a name="207" href="#207">207</a> <em>     *</em>
<a name="208" href="#208">208</a> <em>     * @param b &lt;tt>true&lt;/tt> if parameter names are to be</em>
<a name="209" href="#209">209</a> <em>     * converted to lower case when name/value pairs are parsed.</em>
<a name="210" href="#210">210</a> <em>     * &lt;tt>false&lt;/tt> otherwise.</em>
<a name="211" href="#211">211</a> <em>     */</em>
<a name="212" href="#212">212</a>     <strong>public</strong> <strong>void</strong> setLowerCaseNames(<strong>boolean</strong> b) {
<a name="213" href="#213">213</a>         <strong>this</strong>.lowerCaseNames = b;
<a name="214" href="#214">214</a>     }
<a name="215" href="#215">215</a> 
<a name="216" href="#216">216</a>     <em>/**<em>*</em></em>
<a name="217" href="#217">217</a> <em>     * Extracts a map of name/value pairs from the given string. Names are</em>
<a name="218" href="#218">218</a> <em>     * expected to be unique.</em>
<a name="219" href="#219">219</a> <em>     *</em>
<a name="220" href="#220">220</a> <em>     * @param str the string that contains a sequence of name/value pairs</em>
<a name="221" href="#221">221</a> <em>     * @param separator the name/value pairs separator</em>
<a name="222" href="#222">222</a> <em>     *</em>
<a name="223" href="#223">223</a> <em>     * @return a map of name/value pairs</em>
<a name="224" href="#224">224</a> <em>     */</em>
<a name="225" href="#225">225</a>     <strong>public</strong> Map parse(<strong>final</strong> String str, <strong>char</strong> separator) {
<a name="226" href="#226">226</a>         <strong>if</strong> (str == <strong>null</strong>) {
<a name="227" href="#227">227</a>             <strong>return</strong> <strong>new</strong> HashMap();
<a name="228" href="#228">228</a>         }
<a name="229" href="#229">229</a>         <strong>return</strong> parse(str.toCharArray(), separator);
<a name="230" href="#230">230</a>     }
<a name="231" href="#231">231</a> 
<a name="232" href="#232">232</a>     <em>/**<em>*</em></em>
<a name="233" href="#233">233</a> <em>     * Extracts a map of name/value pairs from the given array of</em>
<a name="234" href="#234">234</a> <em>     * characters. Names are expected to be unique.</em>
<a name="235" href="#235">235</a> <em>     *</em>
<a name="236" href="#236">236</a> <em>     * @param chars the array of characters that contains a sequence of</em>
<a name="237" href="#237">237</a> <em>     * name/value pairs</em>
<a name="238" href="#238">238</a> <em>     * @param separator the name/value pairs separator</em>
<a name="239" href="#239">239</a> <em>     *</em>
<a name="240" href="#240">240</a> <em>     * @return a map of name/value pairs</em>
<a name="241" href="#241">241</a> <em>     */</em>
<a name="242" href="#242">242</a>     <strong>public</strong> Map parse(<strong>final</strong> <strong>char</strong>[] <strong>char</strong>s, <strong>char</strong> separator) {
<a name="243" href="#243">243</a>         <strong>if</strong> (chars == <strong>null</strong>) {
<a name="244" href="#244">244</a>             <strong>return</strong> <strong>new</strong> HashMap();
<a name="245" href="#245">245</a>         }
<a name="246" href="#246">246</a>         <strong>return</strong> parse(chars, 0, chars.length, separator);
<a name="247" href="#247">247</a>     }
<a name="248" href="#248">248</a> 
<a name="249" href="#249">249</a>     <em>/**<em>*</em></em>
<a name="250" href="#250">250</a> <em>     * Extracts a map of name/value pairs from the given array of</em>
<a name="251" href="#251">251</a> <em>     * characters. Names are expected to be unique.</em>
<a name="252" href="#252">252</a> <em>     *</em>
<a name="253" href="#253">253</a> <em>     * @param chars the array of characters that contains a sequence of</em>
<a name="254" href="#254">254</a> <em>     * name/value pairs</em>
<a name="255" href="#255">255</a> <em>     * @param offset - the initial offset.</em>
<a name="256" href="#256">256</a> <em>     * @param length - the length.</em>
<a name="257" href="#257">257</a> <em>     * @param separator the name/value pairs separator</em>
<a name="258" href="#258">258</a> <em>     *</em>
<a name="259" href="#259">259</a> <em>     * @return a map of name/value pairs</em>
<a name="260" href="#260">260</a> <em>     */</em>
<a name="261" href="#261">261</a>     <strong>public</strong> Map parse(
<a name="262" href="#262">262</a>         <strong>final</strong> <strong>char</strong>[] <strong>char</strong>s,
<a name="263" href="#263">263</a>         <strong>int</strong> offset,
<a name="264" href="#264">264</a>         <strong>int</strong> length,
<a name="265" href="#265">265</a>         <strong>char</strong> separator) {
<a name="266" href="#266">266</a> 
<a name="267" href="#267">267</a>         <strong>if</strong> (chars == <strong>null</strong>) {
<a name="268" href="#268">268</a>             <strong>return</strong> <strong>new</strong> HashMap();
<a name="269" href="#269">269</a>         }
<a name="270" href="#270">270</a>         HashMap params = <strong>new</strong> HashMap();
<a name="271" href="#271">271</a>         <strong>this</strong>.chars = chars;
<a name="272" href="#272">272</a>         <strong>this</strong>.pos = offset;
<a name="273" href="#273">273</a>         <strong>this</strong>.len = length;
<a name="274" href="#274">274</a> 
<a name="275" href="#275">275</a>         String paramName = <strong>null</strong>;
<a name="276" href="#276">276</a>         String paramValue = <strong>null</strong>;
<a name="277" href="#277">277</a>         <strong>while</strong> (hasChar()) {
<a name="278" href="#278">278</a>             paramName = parseToken(<strong>new</strong> <strong>char</strong>[] {
<a name="279" href="#279">279</a>                     '=', separator });
<a name="280" href="#280">280</a>             paramValue = <strong>null</strong>;
<a name="281" href="#281">281</a>             <strong>if</strong> (hasChar() &amp;&amp; (chars[pos] == '=')) {
<a name="282" href="#282">282</a>                 pos++; <em class="comment">// skip '='</em>
<a name="283" href="#283">283</a>                 paramValue = parseQuotedToken(<strong>new</strong> <strong>char</strong>[] {
<a name="284" href="#284">284</a>                         separator });
<a name="285" href="#285">285</a>             }
<a name="286" href="#286">286</a>             <strong>if</strong> (hasChar() &amp;&amp; (chars[pos] == separator)) {
<a name="287" href="#287">287</a>                 pos++; <em class="comment">// skip separator</em>
<a name="288" href="#288">288</a>             }
<a name="289" href="#289">289</a>             <strong>if</strong> ((paramName != <strong>null</strong>) &amp;&amp; (paramName.length() > 0)) {
<a name="290" href="#290">290</a>                 <strong>if</strong> (<strong>this</strong>.lowerCaseNames) {
<a name="291" href="#291">291</a>                     paramName = paramName.toLowerCase();
<a name="292" href="#292">292</a>                 }
<a name="293" href="#293">293</a>                 params.put(paramName, paramValue);
<a name="294" href="#294">294</a>             }
<a name="295" href="#295">295</a>         }
<a name="296" href="#296">296</a>         <strong>return</strong> params;
<a name="297" href="#297">297</a>     }
<a name="298" href="#298">298</a> }
</pre>
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