Revision history for Perl extension Text::Scan.

0.01 Mon Jul 16 04:14:30 2001

• original version; created by h2xs 1.20 with options

  -PAXn Scan

0.04 Mon Jul 23 02:48:08 PDT 2001

• fixed darwin implicit decl. bug and '_cleanup' symbol conflict.

0.05 Tue Aug 14 20:10:19 PDT 2001

• Major revision. Prompted by segfault whenever keys in tree < found items in text.

0.09 Wed Mar 20 13:55:03 PST 2002

• Added wildcard functionality with usewild()
• Reduced memory by eliminating separate nodes for null-termination
• increased speed 30%

0.10 Thu Mar 21 13:45:59 PST 2002

• Reduced memory by no longer storing keys explicitly. Now returns matched string in place of key, which is the same except in wildcard matching.

0.11 Mon Apr 1 17:50:35 PST 2002

• Fixed bug causing spurious text-skipping when using wildcards.
• Fixed memory leak when using wildcards

0.12 Wed Apr 10 17:43:57 PDT 2002

• Fixed another bug causing spurious text-skipping
• Fixed a much smaller memory leak
• added diagnostic function btrees(), count of used eqkid links.

0.13 Fri May 31 18:51:47 PDT 2002

• Rewrote basic data structure to be a Finite State Machine rather than Ternary Trie. Speed savings 10%, memory savings 20%, simpler to grasp/debug.

0.14 Thu Aug 29 16:04:07 PDT 2002

• Added new serialize()/restore() functions for saving dicts
• Added more accurate diagnostic functions states(), transitions(), terminals()

0.15 Wed Oct 30 15:35:32 PST 2002

• Replaced 'lround' call with more common 'ceil', unbreaking solaris

0.16 Tue Sep 30 15:09:23 PDT 2003

• Now longer patterns do not clobber shorter patterns having the same prefix.

0.17 Wed Oct 1 14:30:06 PDT 2003

• Uses character classes "charclass()" and thus case-insensitivity "ignorecase()"

0.18 Wed Oct 1 19:39:09 PDT 2003

• Uses global ignore char class "ignore()"

0.19 Thu Oct 9 19:02:22 PDT 2003

• Uses global boundary char class "boundary()" to define match delimiters

0.21 Wed Mar 10 11:28:26 PST 2004

• Changed wildcard code to test for single space equivalent within a wild match, rather than boundary char. Boundary chars inside wildcard matches botched the match. 0.22 Fri Mar 12 11:47:53 PST 2004
• Fixed bug causing wildcards at eof to continue reading past string.

0.23 Tue Apr 6 13:29:22 PDT 2004

• Scanning code major rewrite. New functions: multiscan(), dump().

0.24 Fri Jun 18 13:50:21 PDT 2004

• changed 'getc' to 'fgetc' for Windows compatibility.

0.25 Wed Jan 5 18:18:28 PST 2005

• added squeezeblanks() option to treat contiguous space-equivalents as one.

0.25 Thu Jan 19 17:42:29 PST 2006

• changed file operations in _serialize and _restore to PerlIO counterparts for ActiveState 5.8.x compatibility

0.27 Wed Jul 5 15:54:21 PDT 2006

• changed state machine invocation conditions, calling _cue() first to prevent pathological backtracking in cases where spaces are squeezed and there are massive space-equivalents in the document string.

0.28 Tue Aug 29 19:01:33 PDT 2006

• added limit of 256 to number of chars counted in a wildcard; this prevents some pathological cases when a binary file is scanned.

0.29 Wed Sep 5 13:09:14 BST 2007

• added val() method to retrieve the value associated to a key

0.30 Wed Sep 26 15:23:24 BST 2007

• applied Jerome Eteve's patch that adds the inclboundary class

0.31 Thu Sep 2 18:05:24 UTC 2010

• removed Inline::C dependency