Modified:
websites/production/commons/content/proper/commons-compress/xref/org/apache/commons/compress/compressors/gzip/GzipCompressorInputStream.html
==============================================================================
---
websites/production/commons/content/proper/commons-compress/xref/org/apache/commons/compress/compressors/gzip/GzipCompressorInputStream.html
(original)
+++
websites/production/commons/content/proper/commons-compress/xref/org/apache/commons/compress/compressors/gzip/GzipCompressorInputStream.html
Sun Aug 31 19:27:46 2014
@@ -82,325 +82,315 @@
<a class="jxr_linenumber" name="L74" href="#L74">74</a> <em
class="jxr_comment">// CRC32 from uncompressed data</em>
<a class="jxr_linenumber" name="L75" href="#L75">75</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong>
CRC32 crc = <strong class="jxr_keyword">new</strong> CRC32();
<a class="jxr_linenumber" name="L76" href="#L76">76</a>
-<a class="jxr_linenumber" name="L77" href="#L77">77</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong>
memberSize;
-<a class="jxr_linenumber" name="L78" href="#L78">78</a>
-<a class="jxr_linenumber" name="L79" href="#L79">79</a> <em
class="jxr_comment">// True once everything has been decompressed</em>
-<a class="jxr_linenumber" name="L80" href="#L80">80</a> <strong
class="jxr_keyword">private</strong> <strong
class="jxr_keyword">boolean</strong> endReached = false;
-<a class="jxr_linenumber" name="L81" href="#L81">81</a>
-<a class="jxr_linenumber" name="L82" href="#L82">82</a> <em
class="jxr_comment">// used in no-arg read method</em>
-<a class="jxr_linenumber" name="L83" href="#L83">83</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong>
byte[] oneByte = <strong class="jxr_keyword">new</strong> byte[1];
+<a class="jxr_linenumber" name="L77" href="#L77">77</a> <em
class="jxr_comment">// True once everything has been decompressed</em>
+<a class="jxr_linenumber" name="L78" href="#L78">78</a> <strong
class="jxr_keyword">private</strong> <strong
class="jxr_keyword">boolean</strong> endReached = false;
+<a class="jxr_linenumber" name="L79" href="#L79">79</a>
+<a class="jxr_linenumber" name="L80" href="#L80">80</a> <em
class="jxr_comment">// used in no-arg read method</em>
+<a class="jxr_linenumber" name="L81" href="#L81">81</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong>
byte[] oneByte = <strong class="jxr_keyword">new</strong> byte[1];
+<a class="jxr_linenumber" name="L82" href="#L82">82</a>
+<a class="jxr_linenumber" name="L83" href="#L83">83</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong>
<a
href="../../../../../../org/apache/commons/compress/compressors/gzip/GzipParameters.html">GzipParameters</a>
parameters = <strong class="jxr_keyword">new</strong> <a
href="../../../../../../org/apache/commons/compress/compressors/gzip/GzipParameters.html">GzipParameters</a>();
<a class="jxr_linenumber" name="L84" href="#L84">84</a>
-<a class="jxr_linenumber" name="L85" href="#L85">85</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong>
<a
href="../../../../../../org/apache/commons/compress/compressors/gzip/GzipParameters.html">GzipParameters</a>
parameters = <strong class="jxr_keyword">new</strong> <a
href="../../../../../../org/apache/commons/compress/compressors/gzip/GzipParameters.html">GzipParameters</a>();
-<a class="jxr_linenumber" name="L86" href="#L86">86</a>
-<a class="jxr_linenumber" name="L87" href="#L87">87</a> <em
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L88" href="#L88">88</a> <em
class="jxr_javadoccomment"> * Constructs a new input stream that
decompresses gzip-compressed data</em>
-<a class="jxr_linenumber" name="L89" href="#L89">89</a> <em
class="jxr_javadoccomment"> * from the specified input stream.</em>
-<a class="jxr_linenumber" name="L90" href="#L90">90</a> <em
class="jxr_javadoccomment"> * <p></em>
-<a class="jxr_linenumber" name="L91" href="#L91">91</a> <em
class="jxr_javadoccomment"> * This is equivalent to</em>
-<a class="jxr_linenumber" name="L92" href="#L92">92</a> <em
class="jxr_javadoccomment"> *
<code>GzipCompressorInputStream(inputStream, false)</code> and
thus</em>
-<a class="jxr_linenumber" name="L93" href="#L93">93</a> <em
class="jxr_javadoccomment"> * will not decompress concatenated .gz
files.</em>
-<a class="jxr_linenumber" name="L94" href="#L94">94</a> <em
class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="L95" href="#L95">95</a> <em
class="jxr_javadoccomment"> * @param inputStream the InputStream from
which this object should</em>
-<a class="jxr_linenumber" name="L96" href="#L96">96</a> <em
class="jxr_javadoccomment"> * be created of</em>
-<a class="jxr_linenumber" name="L97" href="#L97">97</a> <em
class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="L98" href="#L98">98</a> <em
class="jxr_javadoccomment"> * @throws IOException if the stream could not
be created</em>
-<a class="jxr_linenumber" name="L99" href="#L99">99</a> <em
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L100" href="#L100">100</a> <strong
class="jxr_keyword">public</strong> <a
href="../../../../../../org/apache/commons/compress/compressors/gzip/GzipCompressorInputStream.html">GzipCompressorInputStream</a>(InputStream
inputStream)
-<a class="jxr_linenumber" name="L101" href="#L101">101</a> <strong
class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="L102" href="#L102">102</a> <strong
class="jxr_keyword">this</strong>(inputStream, false);
-<a class="jxr_linenumber" name="L103" href="#L103">103</a> }
-<a class="jxr_linenumber" name="L104" href="#L104">104</a>
-<a class="jxr_linenumber" name="L105" href="#L105">105</a> <em
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L106" href="#L106">106</a> <em
class="jxr_javadoccomment"> * Constructs a new input stream that
decompresses gzip-compressed data</em>
-<a class="jxr_linenumber" name="L107" href="#L107">107</a> <em
class="jxr_javadoccomment"> * from the specified input stream.</em>
-<a class="jxr_linenumber" name="L108" href="#L108">108</a> <em
class="jxr_javadoccomment"> * <p></em>
-<a class="jxr_linenumber" name="L109" href="#L109">109</a> <em
class="jxr_javadoccomment"> * If
<code>decompressConcatenated</code> is {@code false}:</em>
-<a class="jxr_linenumber" name="L110" href="#L110">110</a> <em
class="jxr_javadoccomment"> * This decompressor might read more input than
it will actually use.</em>
-<a class="jxr_linenumber" name="L111" href="#L111">111</a> <em
class="jxr_javadoccomment"> * If <code>inputStream</code>
supports <code>mark</code> and</em>
-<a class="jxr_linenumber" name="L112" href="#L112">112</a> <em
class="jxr_javadoccomment"> * <code>reset</code>, then the
input position will be adjusted</em>
-<a class="jxr_linenumber" name="L113" href="#L113">113</a> <em
class="jxr_javadoccomment"> * so that it is right after the last byte of
the compressed stream.</em>
-<a class="jxr_linenumber" name="L114" href="#L114">114</a> <em
class="jxr_javadoccomment"> * If <code>mark</code> isn't
supported, the input position will be</em>
-<a class="jxr_linenumber" name="L115" href="#L115">115</a> <em
class="jxr_javadoccomment"> * undefined.</em>
-<a class="jxr_linenumber" name="L116" href="#L116">116</a> <em
class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="L117" href="#L117">117</a> <em
class="jxr_javadoccomment"> * @param inputStream the InputStream from
which this object should</em>
-<a class="jxr_linenumber" name="L118" href="#L118">118</a> <em
class="jxr_javadoccomment"> * be created of</em>
-<a class="jxr_linenumber" name="L119" href="#L119">119</a> <em
class="jxr_javadoccomment"> * @param decompressConcatenated</em>
-<a class="jxr_linenumber" name="L120" href="#L120">120</a> <em
class="jxr_javadoccomment"> * if true, decompress until
the end of the input;</em>
-<a class="jxr_linenumber" name="L121" href="#L121">121</a> <em
class="jxr_javadoccomment"> * if false, stop after the
first .gz member</em>
-<a class="jxr_linenumber" name="L122" href="#L122">122</a> <em
class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="L123" href="#L123">123</a> <em
class="jxr_javadoccomment"> * @throws IOException if the stream could not
be created</em>
-<a class="jxr_linenumber" name="L124" href="#L124">124</a> <em
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L125" href="#L125">125</a> <strong
class="jxr_keyword">public</strong> <a
href="../../../../../../org/apache/commons/compress/compressors/gzip/GzipCompressorInputStream.html">GzipCompressorInputStream</a>(InputStream
inputStream,
-<a class="jxr_linenumber" name="L126" href="#L126">126</a>
<strong class="jxr_keyword">boolean</strong>
decompressConcatenated)
-<a class="jxr_linenumber" name="L127" href="#L127">127</a> <strong
class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="L128" href="#L128">128</a> <em
class="jxr_comment">// Mark support is strictly needed for concatenated files
only,</em>
-<a class="jxr_linenumber" name="L129" href="#L129">129</a> <em
class="jxr_comment">// but it's simpler if it is always available.</em>
-<a class="jxr_linenumber" name="L130" href="#L130">130</a> <strong
class="jxr_keyword">if</strong> (inputStream.markSupported()) {
-<a class="jxr_linenumber" name="L131" href="#L131">131</a> in =
inputStream;
-<a class="jxr_linenumber" name="L132" href="#L132">132</a> } <strong
class="jxr_keyword">else</strong> {
-<a class="jxr_linenumber" name="L133" href="#L133">133</a> in =
<strong class="jxr_keyword">new</strong> BufferedInputStream(inputStream);
-<a class="jxr_linenumber" name="L134" href="#L134">134</a> }
-<a class="jxr_linenumber" name="L135" href="#L135">135</a>
-<a class="jxr_linenumber" name="L136" href="#L136">136</a> <strong
class="jxr_keyword">this</strong>.decompressConcatenated =
decompressConcatenated;
-<a class="jxr_linenumber" name="L137" href="#L137">137</a>
init(<strong class="jxr_keyword">true</strong>);
-<a class="jxr_linenumber" name="L138" href="#L138">138</a> }
-<a class="jxr_linenumber" name="L139" href="#L139">139</a>
-<a class="jxr_linenumber" name="L140" href="#L140">140</a> <em
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L141" href="#L141">141</a> <em
class="jxr_javadoccomment"> * Provides the stream's meta data - may change
with each stream</em>
-<a class="jxr_linenumber" name="L142" href="#L142">142</a> <em
class="jxr_javadoccomment"> * when decompressing concatenated streams.</em>
-<a class="jxr_linenumber" name="L143" href="#L143">143</a> <em
class="jxr_javadoccomment"> * @return the stream's meta data</em>
-<a class="jxr_linenumber" name="L144" href="#L144">144</a> <em
class="jxr_javadoccomment"> * @since 1.8</em>
-<a class="jxr_linenumber" name="L145" href="#L145">145</a> <em
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L146" href="#L146">146</a> <strong
class="jxr_keyword">public</strong> <a
href="../../../../../../org/apache/commons/compress/compressors/gzip/GzipParameters.html">GzipParameters</a>
getMetaData() {
-<a class="jxr_linenumber" name="L147" href="#L147">147</a> <strong
class="jxr_keyword">return</strong> parameters;
-<a class="jxr_linenumber" name="L148" href="#L148">148</a> }
-<a class="jxr_linenumber" name="L149" href="#L149">149</a>
-<a class="jxr_linenumber" name="L150" href="#L150">150</a> <strong
class="jxr_keyword">private</strong> <strong
class="jxr_keyword">boolean</strong> init(<strong
class="jxr_keyword">boolean</strong> isFirstMember) <strong
class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="L151" href="#L151">151</a> assert
isFirstMember || decompressConcatenated;
-<a class="jxr_linenumber" name="L152" href="#L152">152</a>
-<a class="jxr_linenumber" name="L153" href="#L153">153</a> <em
class="jxr_comment">// Check the magic bytes without a possibility of
EOFException.</em>
-<a class="jxr_linenumber" name="L154" href="#L154">154</a> <strong
class="jxr_keyword">int</strong> magic0 = in.read();
-<a class="jxr_linenumber" name="L155" href="#L155">155</a> <strong
class="jxr_keyword">int</strong> magic1 = in.read();
-<a class="jxr_linenumber" name="L156" href="#L156">156</a>
-<a class="jxr_linenumber" name="L157" href="#L157">157</a> <em
class="jxr_comment">// If end of input was reached after decompressing at
least</em>
-<a class="jxr_linenumber" name="L158" href="#L158">158</a> <em
class="jxr_comment">// one .gz member, we have reached the end of the file
successfully.</em>
-<a class="jxr_linenumber" name="L159" href="#L159">159</a> <strong
class="jxr_keyword">if</strong> (magic0 == -1 && !isFirstMember) {
-<a class="jxr_linenumber" name="L160" href="#L160">160</a> <strong
class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="L161" href="#L161">161</a> }
-<a class="jxr_linenumber" name="L162" href="#L162">162</a>
-<a class="jxr_linenumber" name="L163" href="#L163">163</a> <strong
class="jxr_keyword">if</strong> (magic0 != 31 || magic1 != 139) {
-<a class="jxr_linenumber" name="L164" href="#L164">164</a> <strong
class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong>
IOException(isFirstMember
-<a class="jxr_linenumber" name="L165" href="#L165">165</a>
? <span class="jxr_string">"Input is not in the .gz format"</span>
-<a class="jxr_linenumber" name="L166" href="#L166">166</a>
: <span class="jxr_string">"Garbage after a valid .gz
stream"</span>);
-<a class="jxr_linenumber" name="L167" href="#L167">167</a> }
-<a class="jxr_linenumber" name="L168" href="#L168">168</a>
-<a class="jxr_linenumber" name="L169" href="#L169">169</a> <em
class="jxr_comment">// Parsing the rest of the header may throw
EOFException.</em>
-<a class="jxr_linenumber" name="L170" href="#L170">170</a>
DataInputStream inData = <strong class="jxr_keyword">new</strong>
DataInputStream(in);
-<a class="jxr_linenumber" name="L171" href="#L171">171</a> <strong
class="jxr_keyword">int</strong> method = inData.readUnsignedByte();
-<a class="jxr_linenumber" name="L172" href="#L172">172</a> <strong
class="jxr_keyword">if</strong> (method != Deflater.DEFLATED) {
-<a class="jxr_linenumber" name="L173" href="#L173">173</a> <strong
class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong>
IOException(<span class="jxr_string">"Unsupported compression method "</span>
-<a class="jxr_linenumber" name="L174" href="#L174">174</a>
+ method + <span class="jxr_string">" in the .gz header"</span>);
-<a class="jxr_linenumber" name="L175" href="#L175">175</a> }
-<a class="jxr_linenumber" name="L176" href="#L176">176</a>
-<a class="jxr_linenumber" name="L177" href="#L177">177</a> <strong
class="jxr_keyword">int</strong> flg = inData.readUnsignedByte();
-<a class="jxr_linenumber" name="L178" href="#L178">178</a> <strong
class="jxr_keyword">if</strong> ((flg & FRESERVED) != 0) {
-<a class="jxr_linenumber" name="L179" href="#L179">179</a> <strong
class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong>
IOException(
-<a class="jxr_linenumber" name="L180" href="#L180">180</a>
<span class="jxr_string">"Reserved flags are set in the .gz header"</span>);
-<a class="jxr_linenumber" name="L181" href="#L181">181</a> }
-<a class="jxr_linenumber" name="L182" href="#L182">182</a>
-<a class="jxr_linenumber" name="L183" href="#L183">183</a>
parameters.setModificationTime(readLittleEndianInt(inData) * 1000);
-<a class="jxr_linenumber" name="L184" href="#L184">184</a> <strong
class="jxr_keyword">switch</strong> (inData.readUnsignedByte()) { <em
class="jxr_comment">// extra flags</em>
-<a class="jxr_linenumber" name="L185" href="#L185">185</a> <strong
class="jxr_keyword">case</strong> 2:
-<a class="jxr_linenumber" name="L186" href="#L186">186</a>
parameters.setCompressionLevel(Deflater.BEST_COMPRESSION);
-<a class="jxr_linenumber" name="L187" href="#L187">187</a> <strong
class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="L188" href="#L188">188</a> <strong
class="jxr_keyword">case</strong> 4:
-<a class="jxr_linenumber" name="L189" href="#L189">189</a>
parameters.setCompressionLevel(Deflater.BEST_SPEED);
-<a class="jxr_linenumber" name="L190" href="#L190">190</a> <strong
class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="L191" href="#L191">191</a> <strong
class="jxr_keyword">default</strong>:
-<a class="jxr_linenumber" name="L192" href="#L192">192</a> <em
class="jxr_comment">// ignored for now</em>
-<a class="jxr_linenumber" name="L193" href="#L193">193</a> <strong
class="jxr_keyword">break</strong>;
-<a class="jxr_linenumber" name="L194" href="#L194">194</a> }
-<a class="jxr_linenumber" name="L195" href="#L195">195</a>
parameters.setOperatingSystem(inData.readUnsignedByte());
-<a class="jxr_linenumber" name="L196" href="#L196">196</a>
-<a class="jxr_linenumber" name="L197" href="#L197">197</a> <em
class="jxr_comment">// Extra field, ignored</em>
-<a class="jxr_linenumber" name="L198" href="#L198">198</a> <strong
class="jxr_keyword">if</strong> ((flg & FEXTRA) != 0) {
-<a class="jxr_linenumber" name="L199" href="#L199">199</a> <strong
class="jxr_keyword">int</strong> xlen = inData.readUnsignedByte();
-<a class="jxr_linenumber" name="L200" href="#L200">200</a> xlen |=
inData.readUnsignedByte() << 8;
-<a class="jxr_linenumber" name="L201" href="#L201">201</a>
-<a class="jxr_linenumber" name="L202" href="#L202">202</a> <em
class="jxr_comment">// This isn't as efficient as calling in.skip would be,</em>
-<a class="jxr_linenumber" name="L203" href="#L203">203</a> <em
class="jxr_comment">// but it's lazier to handle unexpected end of input this
way.</em>
-<a class="jxr_linenumber" name="L204" href="#L204">204</a> <em
class="jxr_comment">// Most files don't have an extra field anyway.</em>
-<a class="jxr_linenumber" name="L205" href="#L205">205</a> <strong
class="jxr_keyword">while</strong> (xlen-- > 0) {
-<a class="jxr_linenumber" name="L206" href="#L206">206</a>
inData.readUnsignedByte();
-<a class="jxr_linenumber" name="L207" href="#L207">207</a> }
-<a class="jxr_linenumber" name="L208" href="#L208">208</a> }
-<a class="jxr_linenumber" name="L209" href="#L209">209</a>
-<a class="jxr_linenumber" name="L210" href="#L210">210</a> <em
class="jxr_comment">// Original file name</em>
-<a class="jxr_linenumber" name="L211" href="#L211">211</a> <strong
class="jxr_keyword">if</strong> ((flg & FNAME) != 0) {
-<a class="jxr_linenumber" name="L212" href="#L212">212</a>
parameters.setFilename(<strong class="jxr_keyword">new</strong>
String(readToNull(inData),
-<a class="jxr_linenumber" name="L213" href="#L213">213</a>
CharsetNames.ISO_8859_1));
-<a class="jxr_linenumber" name="L214" href="#L214">214</a> }
-<a class="jxr_linenumber" name="L215" href="#L215">215</a>
-<a class="jxr_linenumber" name="L216" href="#L216">216</a> <em
class="jxr_comment">// Comment</em>
-<a class="jxr_linenumber" name="L217" href="#L217">217</a> <strong
class="jxr_keyword">if</strong> ((flg & FCOMMENT) != 0) {
-<a class="jxr_linenumber" name="L218" href="#L218">218</a>
parameters.setComment(<strong class="jxr_keyword">new</strong>
String(readToNull(inData),
-<a class="jxr_linenumber" name="L219" href="#L219">219</a>
CharsetNames.ISO_8859_1));
-<a class="jxr_linenumber" name="L220" href="#L220">220</a> }
-<a class="jxr_linenumber" name="L221" href="#L221">221</a>
-<a class="jxr_linenumber" name="L222" href="#L222">222</a> <em
class="jxr_comment">// Header "CRC16" which is actually a truncated CRC32
(which isn't</em>
-<a class="jxr_linenumber" name="L223" href="#L223">223</a> <em
class="jxr_comment">// as good as real CRC16). I don't know if any encoder
implementation</em>
-<a class="jxr_linenumber" name="L224" href="#L224">224</a> <em
class="jxr_comment">// sets this, so it's not worth trying to verify it. GNU
gzip 1.4</em>
-<a class="jxr_linenumber" name="L225" href="#L225">225</a> <em
class="jxr_comment">// doesn't support this field, but zlib seems to be able to
at least</em>
-<a class="jxr_linenumber" name="L226" href="#L226">226</a> <em
class="jxr_comment">// skip over it.</em>
-<a class="jxr_linenumber" name="L227" href="#L227">227</a> <strong
class="jxr_keyword">if</strong> ((flg & FHCRC) != 0) {
-<a class="jxr_linenumber" name="L228" href="#L228">228</a>
inData.readShort();
-<a class="jxr_linenumber" name="L229" href="#L229">229</a> }
-<a class="jxr_linenumber" name="L230" href="#L230">230</a>
-<a class="jxr_linenumber" name="L231" href="#L231">231</a> <em
class="jxr_comment">// Reset</em>
-<a class="jxr_linenumber" name="L232" href="#L232">232</a> inf.reset();
-<a class="jxr_linenumber" name="L233" href="#L233">233</a> crc.reset();
-<a class="jxr_linenumber" name="L234" href="#L234">234</a> memberSize
= 0;
+<a class="jxr_linenumber" name="L85" href="#L85">85</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L86" href="#L86">86</a> <em
class="jxr_javadoccomment"> * Constructs a new input stream that
decompresses gzip-compressed data</em>
+<a class="jxr_linenumber" name="L87" href="#L87">87</a> <em
class="jxr_javadoccomment"> * from the specified input stream.</em>
+<a class="jxr_linenumber" name="L88" href="#L88">88</a> <em
class="jxr_javadoccomment"> * <p></em>
+<a class="jxr_linenumber" name="L89" href="#L89">89</a> <em
class="jxr_javadoccomment"> * This is equivalent to</em>
+<a class="jxr_linenumber" name="L90" href="#L90">90</a> <em
class="jxr_javadoccomment"> *
<code>GzipCompressorInputStream(inputStream, false)</code> and
thus</em>
+<a class="jxr_linenumber" name="L91" href="#L91">91</a> <em
class="jxr_javadoccomment"> * will not decompress concatenated .gz
files.</em>
+<a class="jxr_linenumber" name="L92" href="#L92">92</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L93" href="#L93">93</a> <em
class="jxr_javadoccomment"> * @param inputStream the InputStream from
which this object should</em>
+<a class="jxr_linenumber" name="L94" href="#L94">94</a> <em
class="jxr_javadoccomment"> * be created of</em>
+<a class="jxr_linenumber" name="L95" href="#L95">95</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L96" href="#L96">96</a> <em
class="jxr_javadoccomment"> * @throws IOException if the stream could not
be created</em>
+<a class="jxr_linenumber" name="L97" href="#L97">97</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L98" href="#L98">98</a> <strong
class="jxr_keyword">public</strong> <a
href="../../../../../../org/apache/commons/compress/compressors/gzip/GzipCompressorInputStream.html">GzipCompressorInputStream</a>(InputStream
inputStream)
+<a class="jxr_linenumber" name="L99" href="#L99">99</a> <strong
class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="L100" href="#L100">100</a> <strong
class="jxr_keyword">this</strong>(inputStream, false);
+<a class="jxr_linenumber" name="L101" href="#L101">101</a> }
+<a class="jxr_linenumber" name="L102" href="#L102">102</a>
+<a class="jxr_linenumber" name="L103" href="#L103">103</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L104" href="#L104">104</a> <em
class="jxr_javadoccomment"> * Constructs a new input stream that
decompresses gzip-compressed data</em>
+<a class="jxr_linenumber" name="L105" href="#L105">105</a> <em
class="jxr_javadoccomment"> * from the specified input stream.</em>
+<a class="jxr_linenumber" name="L106" href="#L106">106</a> <em
class="jxr_javadoccomment"> * <p></em>
+<a class="jxr_linenumber" name="L107" href="#L107">107</a> <em
class="jxr_javadoccomment"> * If
<code>decompressConcatenated</code> is {@code false}:</em>
+<a class="jxr_linenumber" name="L108" href="#L108">108</a> <em
class="jxr_javadoccomment"> * This decompressor might read more input than
it will actually use.</em>
+<a class="jxr_linenumber" name="L109" href="#L109">109</a> <em
class="jxr_javadoccomment"> * If <code>inputStream</code>
supports <code>mark</code> and</em>
+<a class="jxr_linenumber" name="L110" href="#L110">110</a> <em
class="jxr_javadoccomment"> * <code>reset</code>, then the
input position will be adjusted</em>
+<a class="jxr_linenumber" name="L111" href="#L111">111</a> <em
class="jxr_javadoccomment"> * so that it is right after the last byte of
the compressed stream.</em>
+<a class="jxr_linenumber" name="L112" href="#L112">112</a> <em
class="jxr_javadoccomment"> * If <code>mark</code> isn't
supported, the input position will be</em>
+<a class="jxr_linenumber" name="L113" href="#L113">113</a> <em
class="jxr_javadoccomment"> * undefined.</em>
+<a class="jxr_linenumber" name="L114" href="#L114">114</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L115" href="#L115">115</a> <em
class="jxr_javadoccomment"> * @param inputStream the InputStream from
which this object should</em>
+<a class="jxr_linenumber" name="L116" href="#L116">116</a> <em
class="jxr_javadoccomment"> * be created of</em>
+<a class="jxr_linenumber" name="L117" href="#L117">117</a> <em
class="jxr_javadoccomment"> * @param decompressConcatenated</em>
+<a class="jxr_linenumber" name="L118" href="#L118">118</a> <em
class="jxr_javadoccomment"> * if true, decompress until
the end of the input;</em>
+<a class="jxr_linenumber" name="L119" href="#L119">119</a> <em
class="jxr_javadoccomment"> * if false, stop after the
first .gz member</em>
+<a class="jxr_linenumber" name="L120" href="#L120">120</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L121" href="#L121">121</a> <em
class="jxr_javadoccomment"> * @throws IOException if the stream could not
be created</em>
+<a class="jxr_linenumber" name="L122" href="#L122">122</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L123" href="#L123">123</a> <strong
class="jxr_keyword">public</strong> <a
href="../../../../../../org/apache/commons/compress/compressors/gzip/GzipCompressorInputStream.html">GzipCompressorInputStream</a>(InputStream
inputStream,
+<a class="jxr_linenumber" name="L124" href="#L124">124</a>
<strong class="jxr_keyword">boolean</strong>
decompressConcatenated)
+<a class="jxr_linenumber" name="L125" href="#L125">125</a> <strong
class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="L126" href="#L126">126</a> <em
class="jxr_comment">// Mark support is strictly needed for concatenated files
only,</em>
+<a class="jxr_linenumber" name="L127" href="#L127">127</a> <em
class="jxr_comment">// but it's simpler if it is always available.</em>
+<a class="jxr_linenumber" name="L128" href="#L128">128</a> <strong
class="jxr_keyword">if</strong> (inputStream.markSupported()) {
+<a class="jxr_linenumber" name="L129" href="#L129">129</a> in =
inputStream;
+<a class="jxr_linenumber" name="L130" href="#L130">130</a> } <strong
class="jxr_keyword">else</strong> {
+<a class="jxr_linenumber" name="L131" href="#L131">131</a> in =
<strong class="jxr_keyword">new</strong> BufferedInputStream(inputStream);
+<a class="jxr_linenumber" name="L132" href="#L132">132</a> }
+<a class="jxr_linenumber" name="L133" href="#L133">133</a>
+<a class="jxr_linenumber" name="L134" href="#L134">134</a> <strong
class="jxr_keyword">this</strong>.decompressConcatenated =
decompressConcatenated;
+<a class="jxr_linenumber" name="L135" href="#L135">135</a>
init(<strong class="jxr_keyword">true</strong>);
+<a class="jxr_linenumber" name="L136" href="#L136">136</a> }
+<a class="jxr_linenumber" name="L137" href="#L137">137</a>
+<a class="jxr_linenumber" name="L138" href="#L138">138</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L139" href="#L139">139</a> <em
class="jxr_javadoccomment"> * Provides the stream's meta data - may change
with each stream</em>
+<a class="jxr_linenumber" name="L140" href="#L140">140</a> <em
class="jxr_javadoccomment"> * when decompressing concatenated streams.</em>
+<a class="jxr_linenumber" name="L141" href="#L141">141</a> <em
class="jxr_javadoccomment"> * @return the stream's meta data</em>
+<a class="jxr_linenumber" name="L142" href="#L142">142</a> <em
class="jxr_javadoccomment"> * @since 1.8</em>
+<a class="jxr_linenumber" name="L143" href="#L143">143</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L144" href="#L144">144</a> <strong
class="jxr_keyword">public</strong> <a
href="../../../../../../org/apache/commons/compress/compressors/gzip/GzipParameters.html">GzipParameters</a>
getMetaData() {
+<a class="jxr_linenumber" name="L145" href="#L145">145</a> <strong
class="jxr_keyword">return</strong> parameters;
+<a class="jxr_linenumber" name="L146" href="#L146">146</a> }
+<a class="jxr_linenumber" name="L147" href="#L147">147</a>
+<a class="jxr_linenumber" name="L148" href="#L148">148</a> <strong
class="jxr_keyword">private</strong> <strong
class="jxr_keyword">boolean</strong> init(<strong
class="jxr_keyword">boolean</strong> isFirstMember) <strong
class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="L149" href="#L149">149</a> assert
isFirstMember || decompressConcatenated;
+<a class="jxr_linenumber" name="L150" href="#L150">150</a>
+<a class="jxr_linenumber" name="L151" href="#L151">151</a> <em
class="jxr_comment">// Check the magic bytes without a possibility of
EOFException.</em>
+<a class="jxr_linenumber" name="L152" href="#L152">152</a> <strong
class="jxr_keyword">int</strong> magic0 = in.read();
+<a class="jxr_linenumber" name="L153" href="#L153">153</a> <strong
class="jxr_keyword">int</strong> magic1 = in.read();
+<a class="jxr_linenumber" name="L154" href="#L154">154</a>
+<a class="jxr_linenumber" name="L155" href="#L155">155</a> <em
class="jxr_comment">// If end of input was reached after decompressing at
least</em>
+<a class="jxr_linenumber" name="L156" href="#L156">156</a> <em
class="jxr_comment">// one .gz member, we have reached the end of the file
successfully.</em>
+<a class="jxr_linenumber" name="L157" href="#L157">157</a> <strong
class="jxr_keyword">if</strong> (magic0 == -1 && !isFirstMember) {
+<a class="jxr_linenumber" name="L158" href="#L158">158</a> <strong
class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="L159" href="#L159">159</a> }
+<a class="jxr_linenumber" name="L160" href="#L160">160</a>
+<a class="jxr_linenumber" name="L161" href="#L161">161</a> <strong
class="jxr_keyword">if</strong> (magic0 != 31 || magic1 != 139) {
+<a class="jxr_linenumber" name="L162" href="#L162">162</a> <strong
class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong>
IOException(isFirstMember
+<a class="jxr_linenumber" name="L163" href="#L163">163</a>
? <span class="jxr_string">"Input is not in the .gz format"</span>
+<a class="jxr_linenumber" name="L164" href="#L164">164</a>
: <span class="jxr_string">"Garbage after a valid .gz
stream"</span>);
+<a class="jxr_linenumber" name="L165" href="#L165">165</a> }
+<a class="jxr_linenumber" name="L166" href="#L166">166</a>
+<a class="jxr_linenumber" name="L167" href="#L167">167</a> <em
class="jxr_comment">// Parsing the rest of the header may throw
EOFException.</em>
+<a class="jxr_linenumber" name="L168" href="#L168">168</a>
DataInputStream inData = <strong class="jxr_keyword">new</strong>
DataInputStream(in);
+<a class="jxr_linenumber" name="L169" href="#L169">169</a> <strong
class="jxr_keyword">int</strong> method = inData.readUnsignedByte();
+<a class="jxr_linenumber" name="L170" href="#L170">170</a> <strong
class="jxr_keyword">if</strong> (method != Deflater.DEFLATED) {
+<a class="jxr_linenumber" name="L171" href="#L171">171</a> <strong
class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong>
IOException(<span class="jxr_string">"Unsupported compression method "</span>
+<a class="jxr_linenumber" name="L172" href="#L172">172</a>
+ method + <span class="jxr_string">" in the .gz header"</span>);
+<a class="jxr_linenumber" name="L173" href="#L173">173</a> }
+<a class="jxr_linenumber" name="L174" href="#L174">174</a>
+<a class="jxr_linenumber" name="L175" href="#L175">175</a> <strong
class="jxr_keyword">int</strong> flg = inData.readUnsignedByte();
+<a class="jxr_linenumber" name="L176" href="#L176">176</a> <strong
class="jxr_keyword">if</strong> ((flg & FRESERVED) != 0) {
+<a class="jxr_linenumber" name="L177" href="#L177">177</a> <strong
class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong>
IOException(
+<a class="jxr_linenumber" name="L178" href="#L178">178</a>
<span class="jxr_string">"Reserved flags are set in the .gz header"</span>);
+<a class="jxr_linenumber" name="L179" href="#L179">179</a> }
+<a class="jxr_linenumber" name="L180" href="#L180">180</a>
+<a class="jxr_linenumber" name="L181" href="#L181">181</a>
parameters.setModificationTime(readLittleEndianInt(inData) * 1000);
+<a class="jxr_linenumber" name="L182" href="#L182">182</a> <strong
class="jxr_keyword">switch</strong> (inData.readUnsignedByte()) { <em
class="jxr_comment">// extra flags</em>
+<a class="jxr_linenumber" name="L183" href="#L183">183</a> <strong
class="jxr_keyword">case</strong> 2:
+<a class="jxr_linenumber" name="L184" href="#L184">184</a>
parameters.setCompressionLevel(Deflater.BEST_COMPRESSION);
+<a class="jxr_linenumber" name="L185" href="#L185">185</a> <strong
class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="L186" href="#L186">186</a> <strong
class="jxr_keyword">case</strong> 4:
+<a class="jxr_linenumber" name="L187" href="#L187">187</a>
parameters.setCompressionLevel(Deflater.BEST_SPEED);
+<a class="jxr_linenumber" name="L188" href="#L188">188</a> <strong
class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="L189" href="#L189">189</a> <strong
class="jxr_keyword">default</strong>:
+<a class="jxr_linenumber" name="L190" href="#L190">190</a> <em
class="jxr_comment">// ignored for now</em>
+<a class="jxr_linenumber" name="L191" href="#L191">191</a> <strong
class="jxr_keyword">break</strong>;
+<a class="jxr_linenumber" name="L192" href="#L192">192</a> }
+<a class="jxr_linenumber" name="L193" href="#L193">193</a>
parameters.setOperatingSystem(inData.readUnsignedByte());
+<a class="jxr_linenumber" name="L194" href="#L194">194</a>
+<a class="jxr_linenumber" name="L195" href="#L195">195</a> <em
class="jxr_comment">// Extra field, ignored</em>
+<a class="jxr_linenumber" name="L196" href="#L196">196</a> <strong
class="jxr_keyword">if</strong> ((flg & FEXTRA) != 0) {
+<a class="jxr_linenumber" name="L197" href="#L197">197</a> <strong
class="jxr_keyword">int</strong> xlen = inData.readUnsignedByte();
+<a class="jxr_linenumber" name="L198" href="#L198">198</a> xlen |=
inData.readUnsignedByte() << 8;
+<a class="jxr_linenumber" name="L199" href="#L199">199</a>
+<a class="jxr_linenumber" name="L200" href="#L200">200</a> <em
class="jxr_comment">// This isn't as efficient as calling in.skip would be,</em>
+<a class="jxr_linenumber" name="L201" href="#L201">201</a> <em
class="jxr_comment">// but it's lazier to handle unexpected end of input this
way.</em>
+<a class="jxr_linenumber" name="L202" href="#L202">202</a> <em
class="jxr_comment">// Most files don't have an extra field anyway.</em>
+<a class="jxr_linenumber" name="L203" href="#L203">203</a> <strong
class="jxr_keyword">while</strong> (xlen-- > 0) {
+<a class="jxr_linenumber" name="L204" href="#L204">204</a>
inData.readUnsignedByte();
+<a class="jxr_linenumber" name="L205" href="#L205">205</a> }
+<a class="jxr_linenumber" name="L206" href="#L206">206</a> }
+<a class="jxr_linenumber" name="L207" href="#L207">207</a>
+<a class="jxr_linenumber" name="L208" href="#L208">208</a> <em
class="jxr_comment">// Original file name</em>
+<a class="jxr_linenumber" name="L209" href="#L209">209</a> <strong
class="jxr_keyword">if</strong> ((flg & FNAME) != 0) {
+<a class="jxr_linenumber" name="L210" href="#L210">210</a>
parameters.setFilename(<strong class="jxr_keyword">new</strong>
String(readToNull(inData),
+<a class="jxr_linenumber" name="L211" href="#L211">211</a>
CharsetNames.ISO_8859_1));
+<a class="jxr_linenumber" name="L212" href="#L212">212</a> }
+<a class="jxr_linenumber" name="L213" href="#L213">213</a>
+<a class="jxr_linenumber" name="L214" href="#L214">214</a> <em
class="jxr_comment">// Comment</em>
+<a class="jxr_linenumber" name="L215" href="#L215">215</a> <strong
class="jxr_keyword">if</strong> ((flg & FCOMMENT) != 0) {
+<a class="jxr_linenumber" name="L216" href="#L216">216</a>
parameters.setComment(<strong class="jxr_keyword">new</strong>
String(readToNull(inData),
+<a class="jxr_linenumber" name="L217" href="#L217">217</a>
CharsetNames.ISO_8859_1));
+<a class="jxr_linenumber" name="L218" href="#L218">218</a> }
+<a class="jxr_linenumber" name="L219" href="#L219">219</a>
+<a class="jxr_linenumber" name="L220" href="#L220">220</a> <em
class="jxr_comment">// Header "CRC16" which is actually a truncated CRC32
(which isn't</em>
+<a class="jxr_linenumber" name="L221" href="#L221">221</a> <em
class="jxr_comment">// as good as real CRC16). I don't know if any encoder
implementation</em>
+<a class="jxr_linenumber" name="L222" href="#L222">222</a> <em
class="jxr_comment">// sets this, so it's not worth trying to verify it. GNU
gzip 1.4</em>
+<a class="jxr_linenumber" name="L223" href="#L223">223</a> <em
class="jxr_comment">// doesn't support this field, but zlib seems to be able to
at least</em>
+<a class="jxr_linenumber" name="L224" href="#L224">224</a> <em
class="jxr_comment">// skip over it.</em>
+<a class="jxr_linenumber" name="L225" href="#L225">225</a> <strong
class="jxr_keyword">if</strong> ((flg & FHCRC) != 0) {
+<a class="jxr_linenumber" name="L226" href="#L226">226</a>
inData.readShort();
+<a class="jxr_linenumber" name="L227" href="#L227">227</a> }
+<a class="jxr_linenumber" name="L228" href="#L228">228</a>
+<a class="jxr_linenumber" name="L229" href="#L229">229</a> <em
class="jxr_comment">// Reset</em>
+<a class="jxr_linenumber" name="L230" href="#L230">230</a> inf.reset();
+<a class="jxr_linenumber" name="L231" href="#L231">231</a> crc.reset();
+<a class="jxr_linenumber" name="L232" href="#L232">232</a>
+<a class="jxr_linenumber" name="L233" href="#L233">233</a> <strong
class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="L234" href="#L234">234</a> }
<a class="jxr_linenumber" name="L235" href="#L235">235</a>
-<a class="jxr_linenumber" name="L236" href="#L236">236</a> <strong
class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="L237" href="#L237">237</a> }
-<a class="jxr_linenumber" name="L238" href="#L238">238</a>
-<a class="jxr_linenumber" name="L239" href="#L239">239</a> <strong
class="jxr_keyword">private</strong> byte[] readToNull(DataInputStream inData)
<strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="L240" href="#L240">240</a>
ByteArrayOutputStream bos = <strong class="jxr_keyword">new</strong>
ByteArrayOutputStream();
-<a class="jxr_linenumber" name="L241" href="#L241">241</a> <strong
class="jxr_keyword">int</strong> b = 0;
-<a class="jxr_linenumber" name="L242" href="#L242">242</a> <strong
class="jxr_keyword">while</strong> ((b = inData.readUnsignedByte()) != 0x00) {
<em class="jxr_comment">// NOPMD</em>
-<a class="jxr_linenumber" name="L243" href="#L243">243</a>
bos.write(b);
-<a class="jxr_linenumber" name="L244" href="#L244">244</a> }
-<a class="jxr_linenumber" name="L245" href="#L245">245</a> <strong
class="jxr_keyword">return</strong> bos.toByteArray();
-<a class="jxr_linenumber" name="L246" href="#L246">246</a> }
-<a class="jxr_linenumber" name="L247" href="#L247">247</a>
-<a class="jxr_linenumber" name="L248" href="#L248">248</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">int</strong>
readLittleEndianInt(DataInputStream inData) <strong
class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="L249" href="#L249">249</a> <strong
class="jxr_keyword">return</strong> inData.readUnsignedByte()
-<a class="jxr_linenumber" name="L250" href="#L250">250</a> |
(inData.readUnsignedByte() << 8)
-<a class="jxr_linenumber" name="L251" href="#L251">251</a> |
(inData.readUnsignedByte() << 16)
-<a class="jxr_linenumber" name="L252" href="#L252">252</a> |
(inData.readUnsignedByte() << 24);
-<a class="jxr_linenumber" name="L253" href="#L253">253</a> }
-<a class="jxr_linenumber" name="L254" href="#L254">254</a>
-<a class="jxr_linenumber" name="L255" href="#L255">255</a> @Override
-<a class="jxr_linenumber" name="L256" href="#L256">256</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong>
read() <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="L257" href="#L257">257</a> <strong
class="jxr_keyword">return</strong> read(oneByte, 0, 1) == -1 ? -1 : oneByte[0]
& 0xFF;
-<a class="jxr_linenumber" name="L258" href="#L258">258</a> }
-<a class="jxr_linenumber" name="L259" href="#L259">259</a>
-<a class="jxr_linenumber" name="L260" href="#L260">260</a> <em
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L261" href="#L261">261</a> <em
class="jxr_javadoccomment"> * {@inheritDoc}</em>
-<a class="jxr_linenumber" name="L262" href="#L262">262</a> <em
class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="L263" href="#L263">263</a> <em
class="jxr_javadoccomment"> * @since 1.1</em>
-<a class="jxr_linenumber" name="L264" href="#L264">264</a> <em
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L265" href="#L265">265</a> @Override
-<a class="jxr_linenumber" name="L266" href="#L266">266</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong>
read(byte[] b, <strong class="jxr_keyword">int</strong> off, <strong
class="jxr_keyword">int</strong> len) <strong
class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="L267" href="#L267">267</a> <strong
class="jxr_keyword">if</strong> (endReached) {
-<a class="jxr_linenumber" name="L268" href="#L268">268</a> <strong
class="jxr_keyword">return</strong> -1;
-<a class="jxr_linenumber" name="L269" href="#L269">269</a> }
-<a class="jxr_linenumber" name="L270" href="#L270">270</a>
-<a class="jxr_linenumber" name="L271" href="#L271">271</a> <strong
class="jxr_keyword">int</strong> size = 0;
-<a class="jxr_linenumber" name="L272" href="#L272">272</a>
-<a class="jxr_linenumber" name="L273" href="#L273">273</a> <strong
class="jxr_keyword">while</strong> (len > 0) {
-<a class="jxr_linenumber" name="L274" href="#L274">274</a> <strong
class="jxr_keyword">if</strong> (inf.needsInput()) {
-<a class="jxr_linenumber" name="L275" href="#L275">275</a> <em
class="jxr_comment">// Remember the current position because we may need to</em>
-<a class="jxr_linenumber" name="L276" href="#L276">276</a> <em
class="jxr_comment">// rewind after reading too much input.</em>
-<a class="jxr_linenumber" name="L277" href="#L277">277</a>
in.mark(buf.length);
-<a class="jxr_linenumber" name="L278" href="#L278">278</a>
-<a class="jxr_linenumber" name="L279" href="#L279">279</a>
bufUsed = in.read(buf);
-<a class="jxr_linenumber" name="L280" href="#L280">280</a>
<strong class="jxr_keyword">if</strong> (bufUsed == -1) {
-<a class="jxr_linenumber" name="L281" href="#L281">281</a>
<strong class="jxr_keyword">throw</strong> <strong
class="jxr_keyword">new</strong> EOFException();
-<a class="jxr_linenumber" name="L282" href="#L282">282</a> }
+<a class="jxr_linenumber" name="L236" href="#L236">236</a> <strong
class="jxr_keyword">private</strong> byte[] readToNull(DataInputStream inData)
<strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="L237" href="#L237">237</a>
ByteArrayOutputStream bos = <strong class="jxr_keyword">new</strong>
ByteArrayOutputStream();
+<a class="jxr_linenumber" name="L238" href="#L238">238</a> <strong
class="jxr_keyword">int</strong> b = 0;
+<a class="jxr_linenumber" name="L239" href="#L239">239</a> <strong
class="jxr_keyword">while</strong> ((b = inData.readUnsignedByte()) != 0x00) {
<em class="jxr_comment">// NOPMD</em>
+<a class="jxr_linenumber" name="L240" href="#L240">240</a>
bos.write(b);
+<a class="jxr_linenumber" name="L241" href="#L241">241</a> }
+<a class="jxr_linenumber" name="L242" href="#L242">242</a> <strong
class="jxr_keyword">return</strong> bos.toByteArray();
+<a class="jxr_linenumber" name="L243" href="#L243">243</a> }
+<a class="jxr_linenumber" name="L244" href="#L244">244</a>
+<a class="jxr_linenumber" name="L245" href="#L245">245</a> <strong
class="jxr_keyword">private</strong> <strong class="jxr_keyword">long</strong>
readLittleEndianInt(DataInputStream inData) <strong
class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="L246" href="#L246">246</a> <strong
class="jxr_keyword">return</strong> inData.readUnsignedByte()
+<a class="jxr_linenumber" name="L247" href="#L247">247</a> |
(inData.readUnsignedByte() << 8)
+<a class="jxr_linenumber" name="L248" href="#L248">248</a> |
(inData.readUnsignedByte() << 16)
+<a class="jxr_linenumber" name="L249" href="#L249">249</a> |
(((<strong class="jxr_keyword">long</strong>) inData.readUnsignedByte())
<< 24);
+<a class="jxr_linenumber" name="L250" href="#L250">250</a> }
+<a class="jxr_linenumber" name="L251" href="#L251">251</a>
+<a class="jxr_linenumber" name="L252" href="#L252">252</a> @Override
+<a class="jxr_linenumber" name="L253" href="#L253">253</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong>
read() <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="L254" href="#L254">254</a> <strong
class="jxr_keyword">return</strong> read(oneByte, 0, 1) == -1 ? -1 : oneByte[0]
& 0xFF;
+<a class="jxr_linenumber" name="L255" href="#L255">255</a> }
+<a class="jxr_linenumber" name="L256" href="#L256">256</a>
+<a class="jxr_linenumber" name="L257" href="#L257">257</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L258" href="#L258">258</a> <em
class="jxr_javadoccomment"> * {@inheritDoc}</em>
+<a class="jxr_linenumber" name="L259" href="#L259">259</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L260" href="#L260">260</a> <em
class="jxr_javadoccomment"> * @since 1.1</em>
+<a class="jxr_linenumber" name="L261" href="#L261">261</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L262" href="#L262">262</a> @Override
+<a class="jxr_linenumber" name="L263" href="#L263">263</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">int</strong>
read(byte[] b, <strong class="jxr_keyword">int</strong> off, <strong
class="jxr_keyword">int</strong> len) <strong
class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="L264" href="#L264">264</a> <strong
class="jxr_keyword">if</strong> (endReached) {
+<a class="jxr_linenumber" name="L265" href="#L265">265</a> <strong
class="jxr_keyword">return</strong> -1;
+<a class="jxr_linenumber" name="L266" href="#L266">266</a> }
+<a class="jxr_linenumber" name="L267" href="#L267">267</a>
+<a class="jxr_linenumber" name="L268" href="#L268">268</a> <strong
class="jxr_keyword">int</strong> size = 0;
+<a class="jxr_linenumber" name="L269" href="#L269">269</a>
+<a class="jxr_linenumber" name="L270" href="#L270">270</a> <strong
class="jxr_keyword">while</strong> (len > 0) {
+<a class="jxr_linenumber" name="L271" href="#L271">271</a> <strong
class="jxr_keyword">if</strong> (inf.needsInput()) {
+<a class="jxr_linenumber" name="L272" href="#L272">272</a> <em
class="jxr_comment">// Remember the current position because we may need to</em>
+<a class="jxr_linenumber" name="L273" href="#L273">273</a> <em
class="jxr_comment">// rewind after reading too much input.</em>
+<a class="jxr_linenumber" name="L274" href="#L274">274</a>
in.mark(buf.length);
+<a class="jxr_linenumber" name="L275" href="#L275">275</a>
+<a class="jxr_linenumber" name="L276" href="#L276">276</a>
bufUsed = in.read(buf);
+<a class="jxr_linenumber" name="L277" href="#L277">277</a>
<strong class="jxr_keyword">if</strong> (bufUsed == -1) {
+<a class="jxr_linenumber" name="L278" href="#L278">278</a>
<strong class="jxr_keyword">throw</strong> <strong
class="jxr_keyword">new</strong> EOFException();
+<a class="jxr_linenumber" name="L279" href="#L279">279</a> }
+<a class="jxr_linenumber" name="L280" href="#L280">280</a>
+<a class="jxr_linenumber" name="L281" href="#L281">281</a>
inf.setInput(buf, 0, bufUsed);
+<a class="jxr_linenumber" name="L282" href="#L282">282</a> }
<a class="jxr_linenumber" name="L283" href="#L283">283</a>
-<a class="jxr_linenumber" name="L284" href="#L284">284</a>
inf.setInput(buf, 0, bufUsed);
-<a class="jxr_linenumber" name="L285" href="#L285">285</a> }
-<a class="jxr_linenumber" name="L286" href="#L286">286</a>
-<a class="jxr_linenumber" name="L287" href="#L287">287</a> <strong
class="jxr_keyword">int</strong> ret;
-<a class="jxr_linenumber" name="L288" href="#L288">288</a> <strong
class="jxr_keyword">try</strong> {
-<a class="jxr_linenumber" name="L289" href="#L289">289</a> ret
= inf.inflate(b, off, len);
-<a class="jxr_linenumber" name="L290" href="#L290">290</a> }
<strong class="jxr_keyword">catch</strong> (DataFormatException e) {
-<a class="jxr_linenumber" name="L291" href="#L291">291</a>
<strong class="jxr_keyword">throw</strong> <strong
class="jxr_keyword">new</strong> IOException(<span
class="jxr_string">"Gzip-compressed data is corrupt"</span>);
-<a class="jxr_linenumber" name="L292" href="#L292">292</a> }
-<a class="jxr_linenumber" name="L293" href="#L293">293</a>
-<a class="jxr_linenumber" name="L294" href="#L294">294</a>
crc.update(b, off, ret);
-<a class="jxr_linenumber" name="L295" href="#L295">295</a>
memberSize += ret;
-<a class="jxr_linenumber" name="L296" href="#L296">296</a> off +=
ret;
-<a class="jxr_linenumber" name="L297" href="#L297">297</a> len -=
ret;
-<a class="jxr_linenumber" name="L298" href="#L298">298</a> size +=
ret;
-<a class="jxr_linenumber" name="L299" href="#L299">299</a>
count(ret);
-<a class="jxr_linenumber" name="L300" href="#L300">300</a>
-<a class="jxr_linenumber" name="L301" href="#L301">301</a> <strong
class="jxr_keyword">if</strong> (inf.finished()) {
-<a class="jxr_linenumber" name="L302" href="#L302">302</a> <em
class="jxr_comment">// We may have read too many bytes. Rewind the read</em>
-<a class="jxr_linenumber" name="L303" href="#L303">303</a> <em
class="jxr_comment">// position to match the actual amount used.</em>
-<a class="jxr_linenumber" name="L304" href="#L304">304</a> <em
class="jxr_comment">//</em>
-<a class="jxr_linenumber" name="L305" href="#L305">305</a> <em
class="jxr_comment">// NOTE: The "if" is there just in case. Since we used</em>
-<a class="jxr_linenumber" name="L306" href="#L306">306</a> <em
class="jxr_comment">// in.mark earler, it should always skip enough.</em>
-<a class="jxr_linenumber" name="L307" href="#L307">307</a>
in.reset();
-<a class="jxr_linenumber" name="L308" href="#L308">308</a>
-<a class="jxr_linenumber" name="L309" href="#L309">309</a>
<strong class="jxr_keyword">int</strong> skipAmount = bufUsed -
inf.getRemaining();
-<a class="jxr_linenumber" name="L310" href="#L310">310</a>
<strong class="jxr_keyword">if</strong> (in.skip(skipAmount) != skipAmount) {
-<a class="jxr_linenumber" name="L311" href="#L311">311</a>
<strong class="jxr_keyword">throw</strong> <strong
class="jxr_keyword">new</strong> IOException();
-<a class="jxr_linenumber" name="L312" href="#L312">312</a> }
+<a class="jxr_linenumber" name="L284" href="#L284">284</a> <strong
class="jxr_keyword">int</strong> ret;
+<a class="jxr_linenumber" name="L285" href="#L285">285</a> <strong
class="jxr_keyword">try</strong> {
+<a class="jxr_linenumber" name="L286" href="#L286">286</a> ret
= inf.inflate(b, off, len);
+<a class="jxr_linenumber" name="L287" href="#L287">287</a> }
<strong class="jxr_keyword">catch</strong> (DataFormatException e) {
+<a class="jxr_linenumber" name="L288" href="#L288">288</a>
<strong class="jxr_keyword">throw</strong> <strong
class="jxr_keyword">new</strong> IOException(<span
class="jxr_string">"Gzip-compressed data is corrupt"</span>);
+<a class="jxr_linenumber" name="L289" href="#L289">289</a> }
+<a class="jxr_linenumber" name="L290" href="#L290">290</a>
+<a class="jxr_linenumber" name="L291" href="#L291">291</a>
crc.update(b, off, ret);
+<a class="jxr_linenumber" name="L292" href="#L292">292</a> off +=
ret;
+<a class="jxr_linenumber" name="L293" href="#L293">293</a> len -=
ret;
+<a class="jxr_linenumber" name="L294" href="#L294">294</a> size +=
ret;
+<a class="jxr_linenumber" name="L295" href="#L295">295</a>
count(ret);
+<a class="jxr_linenumber" name="L296" href="#L296">296</a>
+<a class="jxr_linenumber" name="L297" href="#L297">297</a> <strong
class="jxr_keyword">if</strong> (inf.finished()) {
+<a class="jxr_linenumber" name="L298" href="#L298">298</a> <em
class="jxr_comment">// We may have read too many bytes. Rewind the read</em>
+<a class="jxr_linenumber" name="L299" href="#L299">299</a> <em
class="jxr_comment">// position to match the actual amount used.</em>
+<a class="jxr_linenumber" name="L300" href="#L300">300</a> <em
class="jxr_comment">//</em>
+<a class="jxr_linenumber" name="L301" href="#L301">301</a> <em
class="jxr_comment">// NOTE: The "if" is there just in case. Since we used</em>
+<a class="jxr_linenumber" name="L302" href="#L302">302</a> <em
class="jxr_comment">// in.mark earler, it should always skip enough.</em>
+<a class="jxr_linenumber" name="L303" href="#L303">303</a>
in.reset();
+<a class="jxr_linenumber" name="L304" href="#L304">304</a>
+<a class="jxr_linenumber" name="L305" href="#L305">305</a>
<strong class="jxr_keyword">int</strong> skipAmount = bufUsed -
inf.getRemaining();
+<a class="jxr_linenumber" name="L306" href="#L306">306</a>
<strong class="jxr_keyword">if</strong> (in.skip(skipAmount) != skipAmount) {
+<a class="jxr_linenumber" name="L307" href="#L307">307</a>
<strong class="jxr_keyword">throw</strong> <strong
class="jxr_keyword">new</strong> IOException();
+<a class="jxr_linenumber" name="L308" href="#L308">308</a> }
+<a class="jxr_linenumber" name="L309" href="#L309">309</a>
+<a class="jxr_linenumber" name="L310" href="#L310">310</a>
bufUsed = 0;
+<a class="jxr_linenumber" name="L311" href="#L311">311</a>
+<a class="jxr_linenumber" name="L312" href="#L312">312</a>
DataInputStream inData = <strong class="jxr_keyword">new</strong>
DataInputStream(in);
<a class="jxr_linenumber" name="L313" href="#L313">313</a>
-<a class="jxr_linenumber" name="L314" href="#L314">314</a>
bufUsed = 0;
-<a class="jxr_linenumber" name="L315" href="#L315">315</a>
-<a class="jxr_linenumber" name="L316" href="#L316">316</a>
DataInputStream inData = <strong class="jxr_keyword">new</strong>
DataInputStream(in);
-<a class="jxr_linenumber" name="L317" href="#L317">317</a>
-<a class="jxr_linenumber" name="L318" href="#L318">318</a> <em
class="jxr_comment">// CRC32</em>
-<a class="jxr_linenumber" name="L319" href="#L319">319</a>
<strong class="jxr_keyword">long</strong> crcStored = 0;
-<a class="jxr_linenumber" name="L320" href="#L320">320</a>
<strong class="jxr_keyword">for</strong> (<strong
class="jxr_keyword">int</strong> i = 0; i < 4; ++i) {
-<a class="jxr_linenumber" name="L321" href="#L321">321</a>
crcStored |= (<strong
class="jxr_keyword">long</strong>)inData.readUnsignedByte() << (i * 8);
-<a class="jxr_linenumber" name="L322" href="#L322">322</a> }
-<a class="jxr_linenumber" name="L323" href="#L323">323</a>
-<a class="jxr_linenumber" name="L324" href="#L324">324</a>
<strong class="jxr_keyword">if</strong> (crcStored != crc.getValue()) {
-<a class="jxr_linenumber" name="L325" href="#L325">325</a>
<strong class="jxr_keyword">throw</strong> <strong
class="jxr_keyword">new</strong> IOException(<span
class="jxr_string">"Gzip-compressed data is corrupt "</span>
-<a class="jxr_linenumber" name="L326" href="#L326">326</a>
+ <span class="jxr_string">"(CRC32 error)"</span>);
-<a class="jxr_linenumber" name="L327" href="#L327">327</a> }
-<a class="jxr_linenumber" name="L328" href="#L328">328</a>
-<a class="jxr_linenumber" name="L329" href="#L329">329</a> <em
class="jxr_comment">// Uncompressed size modulo 2^32 (ISIZE in the spec)</em>
-<a class="jxr_linenumber" name="L330" href="#L330">330</a>
<strong class="jxr_keyword">int</strong> isize = 0;
-<a class="jxr_linenumber" name="L331" href="#L331">331</a>
<strong class="jxr_keyword">for</strong> (<strong
class="jxr_keyword">int</strong> i = 0; i < 4; ++i) {
-<a class="jxr_linenumber" name="L332" href="#L332">332</a>
isize |= inData.readUnsignedByte() << (i * 8);
-<a class="jxr_linenumber" name="L333" href="#L333">333</a> }
-<a class="jxr_linenumber" name="L334" href="#L334">334</a>
-<a class="jxr_linenumber" name="L335" href="#L335">335</a>
<strong class="jxr_keyword">if</strong> (isize != memberSize) {
-<a class="jxr_linenumber" name="L336" href="#L336">336</a>
<strong class="jxr_keyword">throw</strong> <strong
class="jxr_keyword">new</strong> IOException(<span
class="jxr_string">"Gzip-compressed data is corrupt"</span>
-<a class="jxr_linenumber" name="L337" href="#L337">337</a>
+ <span class="jxr_string">"(uncompressed size
mismatch)"</span>);
-<a class="jxr_linenumber" name="L338" href="#L338">338</a> }
+<a class="jxr_linenumber" name="L314" href="#L314">314</a> <em
class="jxr_comment">// CRC32</em>
+<a class="jxr_linenumber" name="L315" href="#L315">315</a>
<strong class="jxr_keyword">long</strong> crcStored =
readLittleEndianInt(inData);
+<a class="jxr_linenumber" name="L316" href="#L316">316</a>
+<a class="jxr_linenumber" name="L317" href="#L317">317</a>
<strong class="jxr_keyword">if</strong> (crcStored != crc.getValue()) {
+<a class="jxr_linenumber" name="L318" href="#L318">318</a>
<strong class="jxr_keyword">throw</strong> <strong
class="jxr_keyword">new</strong> IOException(<span
class="jxr_string">"Gzip-compressed data is corrupt "</span>
+<a class="jxr_linenumber" name="L319" href="#L319">319</a>
+ <span class="jxr_string">"(CRC32 error)"</span>);
+<a class="jxr_linenumber" name="L320" href="#L320">320</a> }
+<a class="jxr_linenumber" name="L321" href="#L321">321</a>
+<a class="jxr_linenumber" name="L322" href="#L322">322</a> <em
class="jxr_comment">// Uncompressed size modulo 2^32 (ISIZE in the spec)</em>
+<a class="jxr_linenumber" name="L323" href="#L323">323</a>
<strong class="jxr_keyword">long</strong> isize = readLittleEndianInt(inData);
+<a class="jxr_linenumber" name="L324" href="#L324">324</a>
+<a class="jxr_linenumber" name="L325" href="#L325">325</a>
<strong class="jxr_keyword">if</strong> (isize != (inf.getBytesWritten() &
0xffffffffl)) {
+<a class="jxr_linenumber" name="L326" href="#L326">326</a>
<strong class="jxr_keyword">throw</strong> <strong
class="jxr_keyword">new</strong> IOException(<span
class="jxr_string">"Gzip-compressed data is corrupt"</span>
+<a class="jxr_linenumber" name="L327" href="#L327">327</a>
+ <span class="jxr_string">"(uncompressed size
mismatch)"</span>);
+<a class="jxr_linenumber" name="L328" href="#L328">328</a> }
+<a class="jxr_linenumber" name="L329" href="#L329">329</a>
+<a class="jxr_linenumber" name="L330" href="#L330">330</a> <em
class="jxr_comment">// See if this is the end of the file.</em>
+<a class="jxr_linenumber" name="L331" href="#L331">331</a>
<strong class="jxr_keyword">if</strong> (!decompressConcatenated ||
!init(false)) {
+<a class="jxr_linenumber" name="L332" href="#L332">332</a>
inf.end();
+<a class="jxr_linenumber" name="L333" href="#L333">333</a>
inf = <strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="L334" href="#L334">334</a>
endReached = <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="L335" href="#L335">335</a>
<strong class="jxr_keyword">return</strong> size == 0 ? -1 : size;
+<a class="jxr_linenumber" name="L336" href="#L336">336</a> }
+<a class="jxr_linenumber" name="L337" href="#L337">337</a> }
+<a class="jxr_linenumber" name="L338" href="#L338">338</a> }
<a class="jxr_linenumber" name="L339" href="#L339">339</a>
-<a class="jxr_linenumber" name="L340" href="#L340">340</a> <em
class="jxr_comment">// See if this is the end of the file.</em>
-<a class="jxr_linenumber" name="L341" href="#L341">341</a>
<strong class="jxr_keyword">if</strong> (!decompressConcatenated ||
!init(false)) {
-<a class="jxr_linenumber" name="L342" href="#L342">342</a>
inf.end();
-<a class="jxr_linenumber" name="L343" href="#L343">343</a>
inf = <strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="L344" href="#L344">344</a>
endReached = <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="L345" href="#L345">345</a>
<strong class="jxr_keyword">return</strong> size == 0 ? -1 : size;
-<a class="jxr_linenumber" name="L346" href="#L346">346</a> }
-<a class="jxr_linenumber" name="L347" href="#L347">347</a> }
-<a class="jxr_linenumber" name="L348" href="#L348">348</a> }
-<a class="jxr_linenumber" name="L349" href="#L349">349</a>
-<a class="jxr_linenumber" name="L350" href="#L350">350</a> <strong
class="jxr_keyword">return</strong> size;
-<a class="jxr_linenumber" name="L351" href="#L351">351</a> }
-<a class="jxr_linenumber" name="L352" href="#L352">352</a>
-<a class="jxr_linenumber" name="L353" href="#L353">353</a> <em
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L354" href="#L354">354</a> <em
class="jxr_javadoccomment"> * Checks if the signature matches what is
expected for a .gz file.</em>
-<a class="jxr_linenumber" name="L355" href="#L355">355</a> <em
class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="L356" href="#L356">356</a> <em
class="jxr_javadoccomment"> * @param signature the bytes to check</em>
-<a class="jxr_linenumber" name="L357" href="#L357">357</a> <em
class="jxr_javadoccomment"> * @param length the number of bytes to
check</em>
-<a class="jxr_linenumber" name="L358" href="#L358">358</a> <em
class="jxr_javadoccomment"> * @return true if this is a .gz
stream, false otherwise</em>
-<a class="jxr_linenumber" name="L359" href="#L359">359</a> <em
class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="L360" href="#L360">360</a> <em
class="jxr_javadoccomment"> * @since 1.1</em>
-<a class="jxr_linenumber" name="L361" href="#L361">361</a> <em
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L362" href="#L362">362</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong>
<strong class="jxr_keyword">boolean</strong> matches(byte[] signature, <strong
class="jxr_keyword">int</strong> length) {
-<a class="jxr_linenumber" name="L363" href="#L363">363</a>
-<a class="jxr_linenumber" name="L364" href="#L364">364</a> <strong
class="jxr_keyword">if</strong> (length < 2) {
-<a class="jxr_linenumber" name="L365" href="#L365">365</a> <strong
class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="L366" href="#L366">366</a> }
-<a class="jxr_linenumber" name="L367" href="#L367">367</a>
-<a class="jxr_linenumber" name="L368" href="#L368">368</a> <strong
class="jxr_keyword">if</strong> (signature[0] != 31) {
-<a class="jxr_linenumber" name="L369" href="#L369">369</a> <strong
class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="L370" href="#L370">370</a> }
-<a class="jxr_linenumber" name="L371" href="#L371">371</a>
-<a class="jxr_linenumber" name="L372" href="#L372">372</a> <strong
class="jxr_keyword">if</strong> (signature[1] != -117) {
-<a class="jxr_linenumber" name="L373" href="#L373">373</a> <strong
class="jxr_keyword">return</strong> false;
-<a class="jxr_linenumber" name="L374" href="#L374">374</a> }
-<a class="jxr_linenumber" name="L375" href="#L375">375</a>
-<a class="jxr_linenumber" name="L376" href="#L376">376</a> <strong
class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
-<a class="jxr_linenumber" name="L377" href="#L377">377</a> }
-<a class="jxr_linenumber" name="L378" href="#L378">378</a>
-<a class="jxr_linenumber" name="L379" href="#L379">379</a> <em
class="jxr_javadoccomment">/**</em>
-<a class="jxr_linenumber" name="L380" href="#L380">380</a> <em
class="jxr_javadoccomment"> * Closes the input stream (unless it is
System.in).</em>
-<a class="jxr_linenumber" name="L381" href="#L381">381</a> <em
class="jxr_javadoccomment"> *</em>
-<a class="jxr_linenumber" name="L382" href="#L382">382</a> <em
class="jxr_javadoccomment"> * @since 1.2</em>
-<a class="jxr_linenumber" name="L383" href="#L383">383</a> <em
class="jxr_javadoccomment"> */</em>
-<a class="jxr_linenumber" name="L384" href="#L384">384</a> @Override
-<a class="jxr_linenumber" name="L385" href="#L385">385</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
close() <strong class="jxr_keyword">throws</strong> IOException {
-<a class="jxr_linenumber" name="L386" href="#L386">386</a> <strong
class="jxr_keyword">if</strong> (inf != <strong
class="jxr_keyword">null</strong>) {
-<a class="jxr_linenumber" name="L387" href="#L387">387</a>
inf.end();
-<a class="jxr_linenumber" name="L388" href="#L388">388</a> inf =
<strong class="jxr_keyword">null</strong>;
-<a class="jxr_linenumber" name="L389" href="#L389">389</a> }
-<a class="jxr_linenumber" name="L390" href="#L390">390</a>
-<a class="jxr_linenumber" name="L391" href="#L391">391</a> <strong
class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.in
!= System.in) {
-<a class="jxr_linenumber" name="L392" href="#L392">392</a> <strong
class="jxr_keyword">this</strong>.in.close();
-<a class="jxr_linenumber" name="L393" href="#L393">393</a> }
-<a class="jxr_linenumber" name="L394" href="#L394">394</a> }
-<a class="jxr_linenumber" name="L395" href="#L395">395</a> }
+<a class="jxr_linenumber" name="L340" href="#L340">340</a> <strong
class="jxr_keyword">return</strong> size;
+<a class="jxr_linenumber" name="L341" href="#L341">341</a> }
+<a class="jxr_linenumber" name="L342" href="#L342">342</a>
+<a class="jxr_linenumber" name="L343" href="#L343">343</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L344" href="#L344">344</a> <em
class="jxr_javadoccomment"> * Checks if the signature matches what is
expected for a .gz file.</em>
+<a class="jxr_linenumber" name="L345" href="#L345">345</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L346" href="#L346">346</a> <em
class="jxr_javadoccomment"> * @param signature the bytes to check</em>
+<a class="jxr_linenumber" name="L347" href="#L347">347</a> <em
class="jxr_javadoccomment"> * @param length the number of bytes to
check</em>
+<a class="jxr_linenumber" name="L348" href="#L348">348</a> <em
class="jxr_javadoccomment"> * @return true if this is a .gz
stream, false otherwise</em>
+<a class="jxr_linenumber" name="L349" href="#L349">349</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L350" href="#L350">350</a> <em
class="jxr_javadoccomment"> * @since 1.1</em>
+<a class="jxr_linenumber" name="L351" href="#L351">351</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L352" href="#L352">352</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong>
<strong class="jxr_keyword">boolean</strong> matches(byte[] signature, <strong
class="jxr_keyword">int</strong> length) {
+<a class="jxr_linenumber" name="L353" href="#L353">353</a>
+<a class="jxr_linenumber" name="L354" href="#L354">354</a> <strong
class="jxr_keyword">if</strong> (length < 2) {
+<a class="jxr_linenumber" name="L355" href="#L355">355</a> <strong
class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="L356" href="#L356">356</a> }
+<a class="jxr_linenumber" name="L357" href="#L357">357</a>
+<a class="jxr_linenumber" name="L358" href="#L358">358</a> <strong
class="jxr_keyword">if</strong> (signature[0] != 31) {
+<a class="jxr_linenumber" name="L359" href="#L359">359</a> <strong
class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="L360" href="#L360">360</a> }
+<a class="jxr_linenumber" name="L361" href="#L361">361</a>
+<a class="jxr_linenumber" name="L362" href="#L362">362</a> <strong
class="jxr_keyword">if</strong> (signature[1] != -117) {
+<a class="jxr_linenumber" name="L363" href="#L363">363</a> <strong
class="jxr_keyword">return</strong> false;
+<a class="jxr_linenumber" name="L364" href="#L364">364</a> }
+<a class="jxr_linenumber" name="L365" href="#L365">365</a>
+<a class="jxr_linenumber" name="L366" href="#L366">366</a> <strong
class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
+<a class="jxr_linenumber" name="L367" href="#L367">367</a> }
+<a class="jxr_linenumber" name="L368" href="#L368">368</a>
+<a class="jxr_linenumber" name="L369" href="#L369">369</a> <em
class="jxr_javadoccomment">/**</em>
+<a class="jxr_linenumber" name="L370" href="#L370">370</a> <em
class="jxr_javadoccomment"> * Closes the input stream (unless it is
System.in).</em>
+<a class="jxr_linenumber" name="L371" href="#L371">371</a> <em
class="jxr_javadoccomment"> *</em>
+<a class="jxr_linenumber" name="L372" href="#L372">372</a> <em
class="jxr_javadoccomment"> * @since 1.2</em>
+<a class="jxr_linenumber" name="L373" href="#L373">373</a> <em
class="jxr_javadoccomment"> */</em>
+<a class="jxr_linenumber" name="L374" href="#L374">374</a> @Override
+<a class="jxr_linenumber" name="L375" href="#L375">375</a> <strong
class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong>
close() <strong class="jxr_keyword">throws</strong> IOException {
+<a class="jxr_linenumber" name="L376" href="#L376">376</a> <strong
class="jxr_keyword">if</strong> (inf != <strong
class="jxr_keyword">null</strong>) {
+<a class="jxr_linenumber" name="L377" href="#L377">377</a>
inf.end();
+<a class="jxr_linenumber" name="L378" href="#L378">378</a> inf =
<strong class="jxr_keyword">null</strong>;
+<a class="jxr_linenumber" name="L379" href="#L379">379</a> }
+<a class="jxr_linenumber" name="L380" href="#L380">380</a>
+<a class="jxr_linenumber" name="L381" href="#L381">381</a> <strong
class="jxr_keyword">if</strong> (<strong class="jxr_keyword">this</strong>.in
!= System.in) {
+<a class="jxr_linenumber" name="L382" href="#L382">382</a> <strong
class="jxr_keyword">this</strong>.in.close();
+<a class="jxr_linenumber" name="L383" href="#L383">383</a> }
+<a class="jxr_linenumber" name="L384" href="#L384">384</a> }
+<a class="jxr_linenumber" name="L385" href="#L385">385</a> }
</pre>
<hr/>
<div id="footer">Copyright © 2014 <a href="http://www.apache.org/";>The
Apache Software Foundation</a>. All rights reserved.</div>
