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| 81 | <!-- ======== START OF CLASS DATA ======== -->
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| 82 | <H2>
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| 83 | <FONT SIZE="-1">
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| 84 | org.apache.tools.tar</FONT>
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| 85 | <BR>
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| 86 | Class TarUtils</H2>
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| 87 | <PRE>
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| 88 | java.lang.Object
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| 89 | <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>org.apache.tools.tar.TarUtils</B>
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| 90 | </PRE>
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| 91 | <HR>
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| 92 | <DL>
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| 93 | <DT>public class <B>TarUtils</B><DT>extends java.lang.Object</DL>
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| 94 |
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| 95 | <P>
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| 96 | This class provides static utility methods to work with byte streams.
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| 97 | <P>
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| 98 |
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| 99 | <P>
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| 103 | <!-- ======== NESTED CLASS SUMMARY ======== -->
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| 108 |
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| 109 | <!-- ======== CONSTRUCTOR SUMMARY ======== -->
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| 110 |
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| 111 | <A NAME="constructor_summary"><!-- --></A>
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| 115 | <B>Constructor Summary</B></FONT></TD>
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| 116 | </TR>
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| 117 | <TR BGCOLOR="white" CLASS="TableRowColor">
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| 118 | <TD><CODE><B><A HREF="../../../../org/apache/tools/tar/TarUtils.html#TarUtils()">TarUtils</A></B>()</CODE>
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| 119 |
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| 120 | <BR>
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| 121 | </TD>
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| 122 | </TR>
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| 123 | </TABLE>
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| 124 |
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| 125 | <!-- ========== METHOD SUMMARY =========== -->
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| 126 |
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| 127 | <A NAME="method_summary"><!-- --></A>
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| 128 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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| 129 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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| 130 | <TD COLSPAN=2><FONT SIZE="+2">
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| 131 | <B>Method Summary</B></FONT></TD>
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| 132 | </TR>
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| 133 | <TR BGCOLOR="white" CLASS="TableRowColor">
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| 134 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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| 135 | <CODE>static long</CODE></FONT></TD>
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| 136 | <TD><CODE><B><A HREF="../../../../org/apache/tools/tar/TarUtils.html#computeCheckSum(byte[])">computeCheckSum</A></B>(byte[] buf)</CODE>
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| 137 |
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| 138 | <BR>
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| 139 | Compute the checksum of a tar entry header.</TD>
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| 140 | </TR>
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| 141 | <TR BGCOLOR="white" CLASS="TableRowColor">
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| 142 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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| 143 | <CODE>static int</CODE></FONT></TD>
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| 144 | <TD><CODE><B><A HREF="../../../../org/apache/tools/tar/TarUtils.html#getCheckSumOctalBytes(long, byte[], int, int)">getCheckSumOctalBytes</A></B>(long value,
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| 145 | byte[] buf,
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| 146 | int offset,
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| 147 | int length)</CODE>
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| 148 |
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| 149 | <BR>
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| 150 | Parse the checksum octal integer from a header buffer.</TD>
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| 151 | </TR>
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| 152 | <TR BGCOLOR="white" CLASS="TableRowColor">
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| 153 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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| 154 | <CODE>static int</CODE></FONT></TD>
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| 155 | <TD><CODE><B><A HREF="../../../../org/apache/tools/tar/TarUtils.html#getLongOctalBytes(long, byte[], int, int)">getLongOctalBytes</A></B>(long value,
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| 156 | byte[] buf,
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| 157 | int offset,
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| 158 | int length)</CODE>
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| 159 |
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| 160 | <BR>
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| 161 | Parse an octal long integer from a header buffer.</TD>
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| 162 | </TR>
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| 163 | <TR BGCOLOR="white" CLASS="TableRowColor">
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| 164 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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| 165 | <CODE>static int</CODE></FONT></TD>
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| 166 | <TD><CODE><B><A HREF="../../../../org/apache/tools/tar/TarUtils.html#getNameBytes(java.lang.StringBuffer, byte[], int, int)">getNameBytes</A></B>(java.lang.StringBuffer name,
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| 167 | byte[] buf,
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| 168 | int offset,
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| 169 | int length)</CODE>
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| 170 |
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| 171 | <BR>
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| 172 | Determine the number of bytes in an entry name.</TD>
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| 173 | </TR>
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| 174 | <TR BGCOLOR="white" CLASS="TableRowColor">
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| 175 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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| 176 | <CODE>static int</CODE></FONT></TD>
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| 177 | <TD><CODE><B><A HREF="../../../../org/apache/tools/tar/TarUtils.html#getOctalBytes(long, byte[], int, int)">getOctalBytes</A></B>(long value,
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| 178 | byte[] buf,
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| 179 | int offset,
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| 180 | int length)</CODE>
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| 181 |
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| 182 | <BR>
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| 183 | Parse an octal integer from a header buffer.</TD>
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| 184 | </TR>
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| 185 | <TR BGCOLOR="white" CLASS="TableRowColor">
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| 186 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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| 187 | <CODE>static java.lang.StringBuffer</CODE></FONT></TD>
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| 188 | <TD><CODE><B><A HREF="../../../../org/apache/tools/tar/TarUtils.html#parseName(byte[], int, int)">parseName</A></B>(byte[] header,
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| 189 | int offset,
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| 190 | int length)</CODE>
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| 191 |
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| 192 | <BR>
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| 193 | Parse an entry name from a header buffer.</TD>
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| 194 | </TR>
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| 195 | <TR BGCOLOR="white" CLASS="TableRowColor">
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| 196 | <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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| 197 | <CODE>static long</CODE></FONT></TD>
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| 198 | <TD><CODE><B><A HREF="../../../../org/apache/tools/tar/TarUtils.html#parseOctal(byte[], int, int)">parseOctal</A></B>(byte[] header,
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| 199 | int offset,
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| 200 | int length)</CODE>
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| 201 |
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| 202 | <BR>
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| 203 | Parse an octal string from a header buffer.</TD>
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| 204 | </TR>
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| 205 | </TABLE>
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| 206 | <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
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| 207 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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| 208 | <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
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| 209 | <TD><B>Methods inherited from class java.lang.Object</B></TD>
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| 210 | </TR>
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| 211 | <TR BGCOLOR="white" CLASS="TableRowColor">
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| 212 | <TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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| 213 | </TR>
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| 214 | </TABLE>
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| 215 |
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| 216 | <P>
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| 217 |
|
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| 218 | <!-- ============ FIELD DETAIL =========== -->
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| 219 |
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| 220 |
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| 221 | <!-- ========= CONSTRUCTOR DETAIL ======== -->
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| 222 |
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| 223 | <A NAME="constructor_detail"><!-- --></A>
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| 224 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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| 225 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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| 226 | <TD COLSPAN=1><FONT SIZE="+2">
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| 227 | <B>Constructor Detail</B></FONT></TD>
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| 228 | </TR>
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| 229 | </TABLE>
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| 230 |
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| 231 | <A NAME="TarUtils()"><!-- --></A><H3>
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| 232 | TarUtils</H3>
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| 233 | <PRE>
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| 234 | public <B>TarUtils</B>()</PRE>
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| 235 | <DL>
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| 236 | </DL>
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| 237 |
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| 238 | <!-- ============ METHOD DETAIL ========== -->
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| 239 |
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| 240 | <A NAME="method_detail"><!-- --></A>
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| 241 | <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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| 242 | <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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| 243 | <TD COLSPAN=1><FONT SIZE="+2">
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| 244 | <B>Method Detail</B></FONT></TD>
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| 245 | </TR>
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| 246 | </TABLE>
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| 247 |
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| 248 | <A NAME="parseOctal(byte[], int, int)"><!-- --></A><H3>
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| 249 | parseOctal</H3>
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| 250 | <PRE>
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| 251 | public static long <B>parseOctal</B>(byte[] header,
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| 252 | int offset,
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| 253 | int length)</PRE>
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| 254 | <DL>
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| 255 | <DD>Parse an octal string from a header buffer. This is used for the
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| 256 | file permission mode value.
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| 257 | <P>
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| 258 | <DD><DL>
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| 259 | <DT><B>Parameters:</B><DD><CODE>header</CODE> - The header buffer from which to parse.<DD><CODE>offset</CODE> - The offset into the buffer from which to parse.<DD><CODE>length</CODE> - The number of header bytes to parse.
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| 260 | <DT><B>Returns:</B><DD>The long value of the octal string.</DL>
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| 261 | </DD>
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| 262 | </DL>
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| 263 | <HR>
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| 264 |
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| 265 | <A NAME="parseName(byte[], int, int)"><!-- --></A><H3>
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| 266 | parseName</H3>
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| 267 | <PRE>
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| 268 | public static java.lang.StringBuffer <B>parseName</B>(byte[] header,
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| 269 | int offset,
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| 270 | int length)</PRE>
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| 271 | <DL>
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| 272 | <DD>Parse an entry name from a header buffer.
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| 273 | <P>
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| 274 | <DD><DL>
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| 275 | <DT><B>Parameters:</B><DD><CODE>header</CODE> - The header buffer from which to parse.<DD><CODE>offset</CODE> - The offset into the buffer from which to parse.<DD><CODE>length</CODE> - The number of header bytes to parse.
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| 276 | <DT><B>Returns:</B><DD>The header's entry name.</DL>
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| 277 | </DD>
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| 278 | </DL>
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| 279 | <HR>
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| 280 |
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| 281 | <A NAME="getNameBytes(java.lang.StringBuffer, byte[], int, int)"><!-- --></A><H3>
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| 282 | getNameBytes</H3>
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| 283 | <PRE>
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| 284 | public static int <B>getNameBytes</B>(java.lang.StringBuffer name,
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| 285 | byte[] buf,
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| 286 | int offset,
|
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| 287 | int length)</PRE>
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| 288 | <DL>
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| 289 | <DD>Determine the number of bytes in an entry name.
|
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| 290 | <P>
|
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| 291 | <DD><DL>
|
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| 292 | <DT><B>Parameters:</B><DD><CODE>name</CODE> - The header name from which to parse.<DD><CODE>offset</CODE> - The offset into the buffer from which to parse.<DD><CODE>length</CODE> - The number of header bytes to parse.
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| 293 | <DT><B>Returns:</B><DD>The number of bytes in a header's entry name.</DL>
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| 294 | </DD>
|
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| 295 | </DL>
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| 296 | <HR>
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| 297 |
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| 298 | <A NAME="getOctalBytes(long, byte[], int, int)"><!-- --></A><H3>
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| 299 | getOctalBytes</H3>
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| 300 | <PRE>
|
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| 301 | public static int <B>getOctalBytes</B>(long value,
|
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| 302 | byte[] buf,
|
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| 303 | int offset,
|
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| 304 | int length)</PRE>
|
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| 305 | <DL>
|
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| 306 | <DD>Parse an octal integer from a header buffer.
|
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| 307 | <P>
|
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| 308 | <DD><DL>
|
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| 309 | <DT><B>Parameters:</B><DD><CODE>value</CODE> - The header value<DD><CODE>offset</CODE> - The offset into the buffer from which to parse.<DD><CODE>length</CODE> - The number of header bytes to parse.
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| 310 | <DT><B>Returns:</B><DD>The integer value of the octal bytes.</DL>
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| 311 | </DD>
|
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| 312 | </DL>
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| 313 | <HR>
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| 314 |
|
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| 315 | <A NAME="getLongOctalBytes(long, byte[], int, int)"><!-- --></A><H3>
|
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| 316 | getLongOctalBytes</H3>
|
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| 317 | <PRE>
|
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| 318 | public static int <B>getLongOctalBytes</B>(long value,
|
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| 319 | byte[] buf,
|
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| 320 | int offset,
|
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| 321 | int length)</PRE>
|
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| 322 | <DL>
|
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| 323 | <DD>Parse an octal long integer from a header buffer.
|
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| 324 | <P>
|
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| 325 | <DD><DL>
|
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| 326 | <DT><B>Parameters:</B><DD><CODE>value</CODE> - The header value<DD><CODE>offset</CODE> - The offset into the buffer from which to parse.<DD><CODE>length</CODE> - The number of header bytes to parse.
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| 327 | <DT><B>Returns:</B><DD>The long value of the octal bytes.</DL>
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| 328 | </DD>
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| 329 | </DL>
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| 330 | <HR>
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| 331 |
|
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| 332 | <A NAME="getCheckSumOctalBytes(long, byte[], int, int)"><!-- --></A><H3>
|
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| 333 | getCheckSumOctalBytes</H3>
|
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| 334 | <PRE>
|
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| 335 | public static int <B>getCheckSumOctalBytes</B>(long value,
|
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| 336 | byte[] buf,
|
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| 337 | int offset,
|
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| 338 | int length)</PRE>
|
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| 339 | <DL>
|
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| 340 | <DD>Parse the checksum octal integer from a header buffer.
|
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| 341 | <P>
|
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| 342 | <DD><DL>
|
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| 343 | <DT><B>Parameters:</B><DD><CODE>value</CODE> - The header value<DD><CODE>offset</CODE> - The offset into the buffer from which to parse.<DD><CODE>length</CODE> - The number of header bytes to parse.
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| 344 | <DT><B>Returns:</B><DD>The integer value of the entry's checksum.</DL>
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| 345 | </DD>
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| 346 | </DL>
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| 347 | <HR>
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| 348 |
|
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| 349 | <A NAME="computeCheckSum(byte[])"><!-- --></A><H3>
|
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| 350 | computeCheckSum</H3>
|
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| 351 | <PRE>
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| 352 | public static long <B>computeCheckSum</B>(byte[] buf)</PRE>
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| 353 | <DL>
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| 354 | <DD>Compute the checksum of a tar entry header.
|
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| 355 | <P>
|
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| 356 | <DD><DL>
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| 357 | <DT><B>Parameters:</B><DD><CODE>buf</CODE> - The tar entry's header buffer.
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| 358 | <DT><B>Returns:</B><DD>The computed checksum.</DL>
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