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path: root/src/backend/utils/adt/regexp.c
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* Fix regex_fixed_prefix() to cope reasonably well with regex patterns of theTom Lane2007-01-03
| | | | | | | | | | form '^(foo)$'. Before, these could never be optimized into indexscans. The recent changes to make psql and pg_dump generate such patterns (for \d commands and -t and related switches, respectively) therefore represented a big performance hit for people with large pg_class catalogs, as seen in recent gripe from Erik Jones. While at it, be more paranoid about case-sensitivity checking in multibyte encodings, and fix some other corner cases in which a regex might be interpreted too liberally.
* Fix similar_escape() so that SIMILAR TO works properly for patterns involvingTom Lane2006-04-13
| | | | | | | | | | | | | | alternatives ("|" symbol). The original coding allowed the added ^ and $ constraints to be absorbed into the first and last alternatives, producing a pattern that would match more than it should. Per report from Eric Noriega. I also changed the pattern to add an ARE director ("***:"), ensuring that SIMILAR TO patterns do not change behavior if regex_flavor is changed. This is necessary to make the non-capturing parentheses work, and seems like a good idea on general principles. Back-patched as far as 7.4. 7.3 also has the bug, but a fix seems impractical because that version's regex engine doesn't have non-capturing parens.
* Our interface code for Spencer's regexp package was checking for regexpTom Lane2004-11-24
| | | | | | | error conditions during regexp compile, but not during regexp execution; any sort of "can't happen" errors would be treated as no-match instead of being reported as they should be. Noticed while trying to duplicate a reported Tcl bug.
* Ensure that memcmp() does not run off the end of memory, per Kurt Roeckx.Tom Lane2004-02-03
| | | | (Same patch committed to HEAD but I fat-fingered the commit message...)
* Another pgindent run with updated typedefs.Bruce Momjian2003-08-08
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* Update copyrights to 2003.Bruce Momjian2003-08-04
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* pgindent run.Bruce Momjian2003-08-04
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* Error message editing in utils/adt. Again thanks to Joe Conway for doingTom Lane2003-07-27
| | | | the bulk of the heavy lifting ...
* Create a GUC variable REGEX_FLAVOR to control the type of regularTom Lane2003-02-06
| | | | | | | | expression accepted by the regex operators, per discussion yesterday. Along the way, reduce deadlock_timeout from PGC_POSTMASTER to PGC_SIGHUP category. It is probably best to insist that all backends share the same setting, but that doesn't mean it has to be frozen at startup.
* Replace regular expression package with Henry Spencer's latest versionTom Lane2003-02-05
| | | | | | | (extracted from Tcl 8.4.1 release, as Henry still hasn't got round to making it a separate library). This solves a performance problem for multibyte, as well as upgrading our regexp support to match recent Tcl and nearly match recent Perl.
* Bring SIMILAR TO and SUBSTRING into some semblance of conformance withTom Lane2002-09-22
| | | | | | | the SQL99 standard. (I'm not sure that the character-class features are quite right, but that can be fixed later.) Document SQL99 and POSIX regexps as being different features; provide variants of SUBSTRING for each.
* pgindent run.Bruce Momjian2002-09-04
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* Update copyright to 2002.Bruce Momjian2002-06-20
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* Search the existing regular expression cache as a ring buffer.Thomas G. Lockhart2002-06-15
| | | | | | | | | Will optimize the case for repeated calls for the same expression, which seems to be the most common case. Formerly, always searched from the first entry. May want to look at the least-recently-used algorithm to make sure it is identifying the right slots to reclaim. Seems silly to do math when it seems that we could simply use an incrementing counter...
* Implement SQL99 OVERLAY(). Allows substitution of a substring in a string.Thomas G. Lockhart2002-06-11
| | | | | | | | | | | Implement SQL99 SIMILAR TO as a synonym for our existing operator "~". Implement SQL99 regular expression SUBSTRING(string FROM pat FOR escape). Extend the definition to make the FOR clause optional. Define textregexsubstr() to actually implement this feature. Update the regression test to include these new string features. All tests pass. Rename the regular expression support routines from "pg95_xxx" to "pg_xxx". Define CREATE CHARACTER SET in the parser per SQL99. No implementation yet.
* New pgindent run with fixes suggested by Tom. Patch manually reviewed,Bruce Momjian2001-11-05
| | | | initdb/regression tests pass.
* pgindent run on all C files. Java run to follow. initdb/regressionBruce Momjian2001-10-25
| | | | tests pass.
* pgindent run. Make it all clean.Bruce Momjian2001-03-22
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* Make regular-expression error messages a tad less obscure,Tom Lane2001-03-19
| | | | per gripe from Josh Berkus.
* Change Copyright from PostgreSQL, Inc to PostgreSQL Global Development Group.Bruce Momjian2001-01-24
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* Fix misuse of StrNCpy to copy and add null to non-null-terminated data.Tom Lane2000-07-07
| | | | | | | Does not work since it fetches one byte beyond the source data, and when the phase of the moon is wrong, the source data is smack up against the end of backend memory and you get SIGSEGV. Don't laugh, this is a fix for an actual user bug report.
* Functions on 'text' type updated to new fmgr style. 'text' isTom Lane2000-07-06
| | | | now TOAST-able.
* Update textin() and textout() to new fmgr style. This is just phaseTom Lane2000-07-05
| | | | | one of updating the whole text datatype, but there are so dang many calls of these two routines that it seems worth a separate commit.
* Add:Bruce Momjian2000-01-26
| | | | | | * Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files.
* New NameStr macro to convert Name to Str. No need for var.data anymore.Bruce Momjian1999-11-07
| | | | | | Fewer calls to nameout. Better use of RelationGetRelationName.
* Move some system includes into c.h, and remove duplicates.Bruce Momjian1999-07-17
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* Final cleanup.Bruce Momjian1999-07-16
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* Update #include cleanupsBruce Momjian1999-07-16
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* Change #include's to use <> and "" as appropriate.Bruce Momjian1999-07-15
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* Clean up #include in /include directory. Add scripts for checking includes.Bruce Momjian1999-07-15
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* Cleanup of /include #include's, for 6.6 only.Bruce Momjian1999-07-14
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* Change my-function-name-- to my_function_name, and optimizer renames.Bruce Momjian1999-02-13
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* Cleanup of source files where 'return' or 'var =' is alone on a line.Bruce Momjian1999-02-03
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* OK, folks, here is the pgindent output.Bruce Momjian1998-09-01
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* Renaming cleanup, no pgindent yet.Bruce Momjian1998-09-01
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* Remove un-needed braces around single statements.Bruce Momjian1998-06-15
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* Re-apply Darren's char2-16 removal code.Bruce Momjian1998-04-26
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* Back out char2-char16 removal. Add later.Bruce Momjian1998-04-07
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* The following uuencoded, gzip'd file will ...Bruce Momjian1998-03-30
| | | | | | | | | | | 1. Remove the char2, char4, char8 and char16 types from postgresql 2. Change references of char16 to name in the regression tests. 3. Rename the char16.sql regression test to name.sql. 4. Modify the regression test scripts and outputs to match up. Might require new regression.{SYSTEM} files... Darren King
* pgindent run before 6.3 release, with Thomas' requested changes.Bruce Momjian1998-02-26
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* Change some ABORTS to ERROR. Add line number when COPY Failure.Bruce Momjian1998-01-05
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* Change elog(WARN) to elog(ERROR) and elog(ABORT).Bruce Momjian1998-01-05
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* Rename strNcpy to StrNCpy, and change third parameter.Bruce Momjian1997-10-25
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* Used modified version of indent that understands over 100 typedefs.Bruce Momjian1997-09-08
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* Another PGINDENT run that changes variable indenting and case label ↵Bruce Momjian1997-09-08
| | | | indenting. Also static variable indenting.
* Massive commit to run PGINDENT on all *.c and *.h files.Bruce Momjian1997-09-07
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* Remove more (void) and fix -Wall warnings.Bruce Momjian1997-08-12
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* Fix pgproc names over 15 chars in output. Add strNcpy() function. remove ↵Bruce Momjian1997-08-12
| | | | some (void) casts that are unnecessary.
* Remove #include <regex.h> so it compiles on systems with GNU regex library.Bryan Henderson1996-11-10
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* Another directory that compiles with no errors, and few warningsMarc G. Fournier1996-11-06
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