arcconstants.html

用JAVA编写的,在做实验的时候留下来的,本来想删的,但是传上来,大家分享吧

<a name="108" href="#108">108</a> <em>     */</em>
<a name="109" href="#109">109</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> byte[] ARC_GZIP_EXTRA_FIELD = { 8, 0, 'L', 'X', 4, 0,
<a name="110" href="#110">110</a>             0, 0, 0, 0 };
<a name="111" href="#111">111</a> 
<a name="112" href="#112">112</a>     <em>/**<em>*</em></em>
<a name="113" href="#113">113</a> <em>     * Key for the ARC Header IP field.</em>
<a name="114" href="#114">114</a> <em>     * </em>
<a name="115" href="#115">115</a> <em>     * Lowercased.</em>
<a name="116" href="#116">116</a> <em>     */</em>
<a name="117" href="#117">117</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String IP_HEADER_FIELD_KEY = <span class="string">"ip-address"</span>;
<a name="118" href="#118">118</a> 
<a name="119" href="#119">119</a>     <em>/**<em>*</em></em>
<a name="120" href="#120">120</a> <em>     * Key for the ARC Header Result Code field.</em>
<a name="121" href="#121">121</a> <em>     * </em>
<a name="122" href="#122">122</a> <em>     * Lowercased.</em>
<a name="123" href="#123">123</a> <em>     */</em>
<a name="124" href="#124">124</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String CODE_HEADER_FIELD_KEY = <span class="string">"result-code"</span>;
<a name="125" href="#125">125</a> 
<a name="126" href="#126">126</a>     <em>/**<em>*</em></em>
<a name="127" href="#127">127</a> <em>     * Key for the ARC Header Checksum field.</em>
<a name="128" href="#128">128</a> <em>     * </em>
<a name="129" href="#129">129</a> <em>     * Lowercased.</em>
<a name="130" href="#130">130</a> <em>     */</em>
<a name="131" href="#131">131</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String CHECKSUM_HEADER_FIELD_KEY = <span class="string">"checksum"</span>;
<a name="132" href="#132">132</a> 
<a name="133" href="#133">133</a>     <em>/**<em>*</em></em>
<a name="134" href="#134">134</a> <em>     * Key for the ARC Header Location field.</em>
<a name="135" href="#135">135</a> <em>     * </em>
<a name="136" href="#136">136</a> <em>     * Lowercased.</em>
<a name="137" href="#137">137</a> <em>     */</em>
<a name="138" href="#138">138</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String LOCATION_HEADER_FIELD_KEY = <span class="string">"location"</span>;
<a name="139" href="#139">139</a> 
<a name="140" href="#140">140</a>     <em>/**<em>*</em></em>
<a name="141" href="#141">141</a> <em>     * Key for the ARC Header Offset field.</em>
<a name="142" href="#142">142</a> <em>     * </em>
<a name="143" href="#143">143</a> <em>     * Lowercased.</em>
<a name="144" href="#144">144</a> <em>     */</em>
<a name="145" href="#145">145</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String OFFSET_HEADER_FIELD_KEY = <span class="string">"offset"</span>;
<a name="146" href="#146">146</a> 
<a name="147" href="#147">147</a>     <em>/**<em>*</em></em>
<a name="148" href="#148">148</a> <em>     * Key for the ARC Header filename field.</em>
<a name="149" href="#149">149</a> <em>     * </em>
<a name="150" href="#150">150</a> <em>     * Lowercased.</em>
<a name="151" href="#151">151</a> <em>     */</em>
<a name="152" href="#152">152</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String FILENAME_HEADER_FIELD_KEY = <span class="string">"filename"</span>;
<a name="153" href="#153">153</a>     
<a name="154" href="#154">154</a>     <em>/**<em>*</em></em>
<a name="155" href="#155">155</a> <em>     * Key for statuscode field.</em>
<a name="156" href="#156">156</a> <em>     */</em>
<a name="157" href="#157">157</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String STATUSCODE_FIELD_KEY = <span class="string">"statuscode"</span>;
<a name="158" href="#158">158</a>     
<a name="159" href="#159">159</a>     <em>/**<em>*</em></em>
<a name="160" href="#160">160</a> <em>     * Key for offset field.</em>
<a name="161" href="#161">161</a> <em>     */</em>
<a name="162" href="#162">162</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String OFFSET_FIELD_KEY = OFFSET_HEADER_FIELD_KEY;
<a name="163" href="#163">163</a>     
<a name="164" href="#164">164</a>     <em>/**<em>*</em></em>
<a name="165" href="#165">165</a> <em>     * Key for filename field.</em>
<a name="166" href="#166">166</a> <em>     */</em>
<a name="167" href="#167">167</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String FILENAME_FIELD_KEY = FILENAME_HEADER_FIELD_KEY;
<a name="168" href="#168">168</a>     
<a name="169" href="#169">169</a>     <em>/**<em>*</em></em>
<a name="170" href="#170">170</a> <em>     * Key for checksum field.</em>
<a name="171" href="#171">171</a> <em>     */</em>
<a name="172" href="#172">172</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String CHECKSUM_FIELD_KEY = CHECKSUM_HEADER_FIELD_KEY;
<a name="173" href="#173">173</a>     
<a name="174" href="#174">174</a>     <em>/**<em>*</em></em>
<a name="175" href="#175">175</a> <em>     * Tokenized field prefix.</em>
<a name="176" href="#176">176</a> <em>     * </em>
<a name="177" href="#177">177</a> <em>     * Use this prefix for tokenized fields  when naming fields in</em>
<a name="178" href="#178">178</a> <em>     * an index.</em>
<a name="179" href="#179">179</a> <em>     */</em>
<a name="180" href="#180">180</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> String TOKENIZED_PREFIX = <span class="string">"tokenized_"</span>;
<a name="181" href="#181">181</a>     
<a name="182" href="#182">182</a> 
<a name="183" href="#183">183</a>     <em>/**<em>*</em></em>
<a name="184" href="#184">184</a> <em>     * Version 1 required metadata fields.</em>
<a name="185" href="#185">185</a> <em>     */</em>
<a name="186" href="#186">186</a>     <strong>public</strong> <strong>static</strong> List REQUIRED_VERSION_1_HEADER_FIELDS = Arrays
<a name="187" href="#187">187</a>             .asList(<strong>new</strong> String[] { URL_FIELD_KEY, IP_HEADER_FIELD_KEY,
<a name="188" href="#188">188</a>                     DATE_FIELD_KEY, MIMETYPE_FIELD_KEY,
<a name="189" href="#189">189</a>                     LENGTH_FIELD_KEY, VERSION_FIELD_KEY,
<a name="190" href="#190">190</a>                     ABSOLUTE_OFFSET_KEY });
<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>     * Minimum possible record length.</em>
<a name="194" href="#194">194</a> <em>     * </em>
<a name="195" href="#195">195</a> <em>     * This is a rough calc. When the header is data it will occupy less space.</em>
<a name="196" href="#196">196</a> <em>     */</em>
<a name="197" href="#197">197</a>     <strong>public</strong> <strong>static</strong> <strong>int</strong> MINIMUM_RECORD_LENGTH = 1 + <span class="string">"://"</span>.length() + 1
<a name="198" href="#198">198</a>             + ARC_FILE_EXTENSION.length() + <span class="string">" "</span>.length() + +1 + <span class="string">" "</span>.length()
<a name="199" href="#199">199</a>             + 1 + <span class="string">" "</span>.length() + 1 + <span class="string">"/"</span>.length() + 1 + <span class="string">" "</span>.length() + 1;
<a name="200" href="#200">200</a> 
<a name="201" href="#201">201</a>     <em>/**<em>*</em></em>
<a name="202" href="#202">202</a> <em>     * Start of a GZIP header that uses default deflater.</em>
<a name="203" href="#203">203</a> <em>     */</em>
<a name="204" href="#204">204</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> byte[] GZIP_HEADER_BEGIN = {
<a name="205" href="#205">205</a>             (byte) GZIPInputStream.GZIP_MAGIC, <em class="comment">// Magic number (short)</em>
<a name="206" href="#206">206</a>             (byte) (GZIPInputStream.GZIP_MAGIC >> 8), <em class="comment">// Magic number (short)</em>
<a name="207" href="#207">207</a>             Deflater.DEFLATED <em class="comment">// Compression method (CM)</em>
<a name="208" href="#208">208</a>     };
<a name="209" href="#209">209</a> 
<a name="210" href="#210">210</a>     <em>/**<em>*</em></em>
<a name="211" href="#211">211</a> <em>     * Length of minimual 'default GZIP header.</em>
<a name="212" href="#212">212</a> <em>     * </em>
<a name="213" href="#213">213</a> <em>     * See RFC1952 for explaination of value of 10.</em>
<a name="214" href="#214">214</a> <em>     */</em>
<a name="215" href="#215">215</a>     <strong>public</strong> <strong>static</strong> <strong>final</strong> <strong>int</strong> DEFAULT_GZIP_HEADER_LENGTH =
<a name="216" href="#216">216</a>     	GzipHeader.MINIMAL_GZIP_HEADER_LENGTH;
<a name="217" href="#217">217</a> }
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