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version 1.1.1.2, 2012/02/21 23:50:25
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Line 20 There are some size limitations in PCRE but it is hope
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Line 20 There are some size limitations in PCRE but it is hope
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practice be relevant. |
practice be relevant. |
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The maximum length of a compiled pattern is 65539 (sic) bytes if PCRE is | The maximum length of a compiled pattern is approximately 64K data units (bytes |
compiled with the default internal linkage size of 2. If you want to process | for the 8-bit library, 16-bit units for the 16-bit library) if PCRE is compiled |
| with the default internal linkage size of 2 bytes. If you want to process |
regular expressions that are truly enormous, you can compile PCRE with an |
regular expressions that are truly enormous, you can compile PCRE with an |
internal linkage size of 3 or 4 (see the <b>README</b> file in the source | internal linkage size of 3 or 4 (when building the 16-bit library, 3 is rounded |
distribution and the | up to 4). See the <b>README</b> file in the source distribution and the |
<a href="pcrebuild.html"><b>pcrebuild</b></a> |
<a href="pcrebuild.html"><b>pcrebuild</b></a> |
documentation for details). In these cases the limit is substantially larger. | documentation for details. In these cases the limit is substantially larger. |
However, the speed of execution is slower. |
However, the speed of execution is slower. |
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Line 71 Cambridge CB2 3QH, England.
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Line 72 Cambridge CB2 3QH, England.
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REVISION |
REVISION |
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Last updated: 30 November 2011 | Last updated: 08 January 2012 |
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Copyright © 1997-2011 University of Cambridge. | Copyright © 1997-2012 University of Cambridge. |
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Return to the <a href="index.html">PCRE index page</a>. |
Return to the <a href="index.html">PCRE index page</a>. |