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package net.sourceforge.pebble.web.filter; |
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import javax.servlet.ServletOutputStream; |
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import javax.servlet.http.HttpServletResponse; |
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import javax.servlet.http.HttpServletResponseWrapper; |
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import java.io.IOException; |
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import java.io.OutputStreamWriter; |
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import java.io.PrintWriter; |
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public class GZIPResponseWrapper extends HttpServletResponseWrapper { |
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private final HttpServletResponse wrappedResponse; |
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private final String encoding; |
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private ServletOutputStream stream; |
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private PrintWriter writer; |
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private int status; |
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private Integer contentLength; |
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|
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public GZIPResponseWrapper(HttpServletResponse wrappedResponse, String encoding) { |
52 | 0 | super(wrappedResponse); |
53 | 0 | this.wrappedResponse = wrappedResponse; |
54 | 0 | this.encoding = encoding; |
55 | 0 | } |
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|
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public ServletOutputStream createOutputStream() throws IOException { |
58 | 0 | if (shouldGzipResponse()) { |
59 | 0 | return (new GZIPResponseStream(wrappedResponse)); |
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} else { |
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|
62 | 0 | if (contentLength != null) { |
63 | 0 | wrappedResponse.setContentLength(contentLength); |
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} |
65 | 0 | return wrappedResponse.getOutputStream(); |
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} |
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} |
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private boolean shouldGzipResponse() { |
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|
72 | 0 | return status != HttpServletResponse.SC_NOT_MODIFIED && status != HttpServletResponse.SC_NO_CONTENT; |
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} |
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public void finishResponse() { |
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try { |
77 | 0 | if (writer != null) { |
78 | 0 | writer.close(); |
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} else { |
80 | 0 | if (stream != null) { |
81 | 0 | stream.close(); |
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} |
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} |
84 | 0 | } catch (IOException e) { |
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|
86 | 0 | } |
87 | 0 | } |
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public void flushBuffer() throws IOException { |
90 | 0 | if (stream != null) { |
91 | 0 | stream.flush(); |
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} |
93 | 0 | } |
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|
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public ServletOutputStream getOutputStream() throws IOException { |
96 | 0 | if (writer != null) { |
97 | 0 | throw new IllegalStateException("getWriter() has already been called!"); |
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} |
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|
100 | 0 | if (stream == null) |
101 | 0 | stream = createOutputStream(); |
102 | 0 | return (stream); |
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} |
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public PrintWriter getWriter() throws IOException { |
106 | 0 | if (writer != null) { |
107 | 0 | return (writer); |
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} |
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|
110 | 0 | if (stream != null) { |
111 | 0 | throw new IllegalStateException("getOutputStream() has already been called!"); |
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} |
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|
114 | 0 | stream = createOutputStream(); |
115 | 0 | writer = new PrintWriter(new OutputStreamWriter(stream, encoding)); |
116 | 0 | return (writer); |
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} |
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public void setContentLength(int length) { |
120 | 0 | contentLength = length; |
121 | 0 | } |
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@Override |
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public void setStatus(int sc) { |
125 | 0 | this.status = sc; |
126 | 0 | super.setStatus(sc); |
127 | 0 | } |
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@Override |
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public void setStatus(int sc, String sm) { |
131 | 0 | this.status = sc; |
132 | 0 | super.setStatus(sc, sm); |
133 | 0 | } |
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|
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@Override |
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public void sendError(int sc, String msg) throws IOException { |
137 | 0 | this.status = sc; |
138 | 0 | super.sendError(sc, msg); |
139 | 0 | } |
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|
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@Override |
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public void sendError(int sc) throws IOException { |
143 | 0 | this.status = sc; |
144 | 0 | super.sendError(sc); |
145 | 0 | } |
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} |