Suppress any errors from set_time_limit,
unlink, and file_exists functions.
see: http://www.freelists.org/archives/dokuwiki/09-2006/msg00004.html

darcs-hash:20060908193433-05dcb-013617431870ab5bfb2ce8c6e99ba5af13493228.gz

This patch primarily updates p_cached_xhtml() and p_cached_instructions() to
allow their caching logic to be surrounded by an event trigger.

p_cached_xhtml() has been rewritten as the more general p_cached_output() to
support other render output formats besides 'xhtml'. All calls to
p_cached_xhtml() have been changed to refer to the new function.

New event:

name:        PARSER_CACHE_USE
data:        cache object (see below)
action:      determine if cache file can be used
preventable: yes
result:      bool, true to use cache file, false otherwise

Cache operations have been generalised in a new class, cache, extended to
cache_parser, cache_renderer & cache_instructions. Details can be found in
inc/cache.php

For handling of above event, key properties are:
- page, if present the wiki page id,
        may not always be present, e.g. when called for locale xhtml files
- file, source file
- mode, renderer mode (e.g. 'xhtml') or 'i' for instructions

Other changes:
- cache class counts cache hits against attempts, results are stored in
  {cache_dir}/cache_stats.txt
- adds metadata dependency to renderer page cache
- replaces purgefile dependency for renderer cache with metadata
  'relation references' (internal link) dependency for wiki pages only

darcs-hash:20060911021418-9b6ab-19601ed194b8c8e45236ab72c3e23d78bf777e6c.gz

- main.php & detail.php
  add check for being run by DokuWiki, die() if not.

darcs-hash:20060909093603-9b6ab-0f8e31e246adba8adc888dbba1f924ff0e455d63.gz

darcs-hash:20060909093314-9b6ab-af4fea49bf71b416150132d44534579d751f144b.gz

darcs-hash:20060908124315-9b6ab-7e4146e1068ab08d5539a7c573502d8373a0e524.gz

as per recent security warning, clientIP() could
return other arbitrary data along with an IP
address. This fix ensures only IP addresses can
be returned by this function.

darcs-hash:20060908122744-9b6ab-8c90ca361b038a47b65f3f3dbf7228ae569f8c08.gz

darcs-hash:20060908071356-7ad00-4bfc1e6e6a485582cafe4f2045180c69d9d7b739.gz

darcs-hash:20060906191207-9b6ab-2b1e3e4948f6c3e4c3b3857440ff790aa66e4614.gz

This moves the defines for the different AUTH levels higher up in inc/auth.php
to set them before including any auth modules. This fixes a problem with the
phpBB auth module posted at
http://wiki.splitbrain.org/wiki:tips:integrate_with_phpbb#another_phpbb.class.php

darcs-hash:20060906184814-7ad00-679bd636730e21dca45b9baaf721fb3b34a8695a.gz

darcs-hash:20060904182033-7ad00-c72dfa5fa9f5c44e0fdf09db922a4915935169f7.gz

darcs-hash:20060903193759-d5083-276d7cb9622d9a009de2aedca8bfba880c3ffbdd.gz

This should fix an issue with IE6 and https where the window.onload magic
would raise a security warning. See
http://dean.edwards.name/weblog/2006/06/again/#comment5776
http://dean.edwards.name/weblog/2006/06/again/#comment5788

needs testing

darcs-hash:20060903162438-7ad00-b29cd50387d1fef95bb688910b41e6b64cfeebca.gz

The <meta name

darcs-hash:20060903161204-7ad00-61c823d3806e6fdc2ffa3d4978a90dc9953ef9ce.gz

darcs-hash:20060903101323-d5083-8e25477a9c22364b4e086bade217ef7efd4b8f03.gz

darcs-hash:20060903081832-7ad00-9ea6aaaf2fb84fa543d3606e634e973711591597.gz

darcs-hash:20060901002016-9b6ab-716518138edf541a869510d7c2934b9474547fc3.gz

darcs-hash:20060831092146-9b6ab-b00aa29c982ab18117f476b3d01d5111915c9d4b.gz

ft_snippet()
- make utf8 algorithm default
- add workaround for utf8_substr() limitations, bug #891
- fix some indexes which missed out on conversion to utf8
  character counts
- minor improvements

idx_lookup()
- minor changes to wildcard matching code to improve performance
  (changes based on profiling results)

utf8
- specifically set mb_internal_coding to utf-8 when mb_string
  functions will be used.

darcs-hash:20060831003413-9b6ab-712021eda3c959ffe79d8d3fe91d2c9a8acf2b58.gz

darcs-hash:20060830210459-7ad00-8f7a2ae826d5f893d3e48f41c8ae868987ec0dd2.gz

This patch provides a rewritten changelog system that is designed to run
efficiently on both small and large wikis. The patch includes a plugin to
convert changelogs from the current format. The conversion is
non-destructive and happens automatically. For more information on the new
changelog format see "http://wiki.splitbrain.org/wiki:changelog".

Structure
In short the changelog is now stored in per-page changelog files, with a
recent changes cache. The recent changes cache is kept in
"/data/meta/_dokuwiki.changes" and trimmed daily. The per-page changelogs
are kept in "/data/meta/<ns>/<page_id>.changes" files. To preserve
revision information for revisions stored in the attic, the "*.changes"
files are not removed when their page is deleted. This allows the full
life-cycle of page creation, deletion, and reversion to be tracked.

Format
The changelog line format now uses a general "line type" field in place of
the special "minor" change syntax. There is also an extra field that can
be used to store arbitrary data associated with special line types. The
reverted line type (R) is a good example. There the extra field holds the
revision date used as the source for reverting the page. See the wiki for
the complete syntax description.

Code Notes
The changelog functions have been rewritten to load the whole file only if
it is small. For larger files, the function loads only the relevant
chunk(s). Parsed changelog lines are cached in memory to speed future
function calls.

getRevisionInfo
A binary search is used to locate the chunk expected to contain the
requested revision. The whole chunk is parsed, and adjacent lines are
optimistically cached to speed consecutive calls.

getRevisions
Reads the changelog file backwards (newest first) in chunks until the
requested number of lines have been read. Parsed changelog lines are
cached for subsequent calls to getRevisionInfo. Because revisions are read
from the changelog they are no longer guaranteed to exist in the attic.

(Note: Even with lines of arbitrary length getRevisionInfo and
getRevisions never split changelog lines while reading. This is done by
sliding the "file pointer" forward to the end of a line after each blind
seek.)

isMinor
Removed. To detect a minor edit check the type as follows:
$parsed_logline['type']

darcs-hash:20060830182753-05dcb-1c5ea17f581197a33732a8d11da223d809c03506.gz

- remove initialisation of caches in inc/pageutils.php
- add global declaration to init.php to support init.php
  being included from within a function, e.g. unit testing

  ;-)

- minor change to utf8_substr, remove non-essential brackets
  added as part of an earlier patch

darcs-hash:20060829134806-9b6ab-ab15191344a83be664c412403dc84a24fa2253a2.gz

This patch updates only the english version of the localised
"registermail.txt" file.  Other versions need to be updated also.

darcs-hash:20060822072444-9b6ab-ff6cb5bc78277c383e82c3986eeb16168e86c27b.gz

darcs-hash:20060828190614-7ad00-d52a526cee9329caeed5861d797d278a82936d11.gz

Update to 'add function result caching for cleanID and wikiFN'.
Makes certain that arrays exist for the caches, without checking on each function call.
Properly create multidimensional arrays in wikiFN().

darcs-hash:20060828071205-05dcb-7c8dbdb5ea4e7b73808ec3bd9222df1b837d3a1f.gz

darcs-hash:20060828092029-9b6ab-f76c94b76ce1ada49e2fefde11af824bb98b99c7.gz

- move caches into global scope (they were static in function scope)
- add teardown() method to clean_id unit test - to clear its cache

darcs-hash:20060827183327-9b6ab-cf9beb2ca6c47142dfaad3117d7c86748a54312c.gz

darcs-hash:20060827153352-9b6ab-651decb2566f16334218c6782edc6c7d47b41e13.gz

darcs-hash:20060827153254-9b6ab-3c76fde7cb5534ca12628e9aa6e6d59d9bb02f45.gz

 - correct "opt1" algorithm for multibyte utf8
 - minor improvement to "opt2" for short pages
 - add "utf8" algorithm, this algorithm endeavours
   to work with whole utf8 character as much as
   possible.  The resulting snippet will tend to
   100 characters, rather than the 100 bytes of
   "opt1" and "opt2".

darcs-hash:20060826234333-9b6ab-ae4c60c8855a92b133cb8d5a230098203f610e7b.gz

This patch no longer uses htmlspecialchars on $conf['title'] when
used in the page title - instead strip_tags is applied. This streamlines
the use of $conf['title']

darcs-hash:20060826180943-7ad00-c8cc155c1e92fad05b85f77841834f782cbf6281.gz

darcs-hash:20060826095311-9b6ab-9a6f272cc7c7532eb2bad8f7b4404c5a16b71109.gz

This adds code to remove or replace invalid UTF-8 bytes and uses it
in the ft_snippets function.

darcs-hash:20060826082919-7ad00-a94004de159ae93ff5b7270fd3e631ff467233cd.gz

- add $conf['compression'] meta data and en lang strings
- remove $conf['usegzip'] meta data and en lang strings

Other language strings will need to be updated.

darcs-hash:20060825223047-9b6ab-b0c8c6af57847690a6d398d0bd98af9a51911c21.gz

darcs-hash:20060825174755-7ad00-e67f267dd1552ba22b01662de6dbb84faf33e5f8.gz

XHTML allows non-ASCII chars in ids and names, so there is no need
to forcibly romanize section header ids

darcs-hash:20060825173653-7ad00-f982cec893cc2d0f1b2de4226879d7d2b294ac76.gz

value defaults to true

patch also includes an update to idx_parseIndexLine to make use of the
new parameter - the index file (if built by DokuWiki's methods) will
contain already "clean" IDs.

darcs-hash:20060825144112-9b6ab-55adc71cf55bb58468fb3f0b03b9001ab149a82b.gz

This updates the availability check of the choosen compression method. If bzip2
is configured but not available it falls back to gzip if available.

darcs-hash:20060825144739-7ad00-9f7ce54fd1dbf0d7a8272393e9bc02d862b28fff.gz

darcs-hash:20060823211149-9c1ae-569f295c33dc798a429a373f48cb09122334ea29.gz

darcs-hash:20060825134730-9b6ab-086ee0647af39c4398cf1726324d8215722a39db.gz

This patch includes two alternative algorithms for ft_snippet(), the code
which prepares the snippets seen on the search page - and the most time
consuming part of the production of that page.

If you have $conf['allowdebug'] on, you can specify the search algorithm to
use by adding &_search

darcs-hash:20060825104046-9b6ab-942d81a43cf0f85bfd235cabf6c35dd4b20e0b71.gz