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release 1.14.0

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Jean-Francois Dockes 2010-09-13 16:33:47 +02:00
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src/INSTALL
View File

@ -91,7 +91,13 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
displayed from the recoll File menu. The list is stored in the missing
text file inside the configuration directory.
A list of common file types which need external commands:
A list of common file types which need external commands follows. Many of
the filters need the iconv command, which is not always listed as a
dependancy.
As of Recoll release 1.14, a number of XML-based formats that were handled
by ad hoc filter code now use xsltproc, which usually comes with libxslt.
These are: abiword, fb2 (ebooks), kword, openoffice, svg.
* Openoffice: supported natively, but needs the unzip command to be
installed.
@ -104,6 +110,8 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
* MS Excel and PowerPoint: catdoc.
* MS Open XML (docx): needs xsltproc.
* Wordperfect files: libwpd.
* RTF: unrtf
@ -117,13 +125,12 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
* djvu: DjVuLibre
* mp3: Recoll will use the id3info command from the id3lib package to
extract tag information. Without it, only the file names will be
indexed.
* flac files need metaflac.
* ogg files need ogginfo.
* mp3, flac, ogg vorbis: Recoll releases before 1.13 use the id3info
command from the id3lib package to extract mp3 tag information. (Some
gcc versions after 4.4 may have trouble compiling id3lib. You can find
a workaround here), metaflac (standard flac tools) for flac files, and
ogginfo (vorbis tools) for ogg files. Releases 1.14 and later use a
single Python filter based on mutagen for all audio file types.
* Pictures: Recoll uses the Exiftool Perl package to extract tag
information. Most image file formats are supported. Note that there
@ -134,12 +141,14 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
* chm: files in microsoft help format need Python and the pychm module
(which needs chmlib).
* ics: iCalendar files need Python and the icalendar module.
* ics: up to Recoll 1.13, iCalendar files need Python and the icalendar
module. For newer versions, icalendar is not needed
* zip: Zip archives need Python (and the standard zipfile module).
Text, HTML, mail folders, Openoffice and Scribus files are processed
internally. Lyx is used to index Lyx files. Many filters need sed and awk.
internally. Lyx is used to index Lyx files. Many filters need iconv and
the standard sed and awk.
--------------------------------------------------------------------------
@ -159,11 +168,18 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
7.3.1. Prerequisites
At the very least, you will need to download and install the xapian core
package and the qt run-time and development packages. Check the Recoll
download page for up to date version information.
C++ compiler. Up to Recoll version 1.13.04, its absence can manifest
itself by strange messages about a missing iconv_open.
You will most probably be able to find a binary package for qt for your
Development files for Xapian core
Development files for Qt .
Development files for X11 and zlib.
Check the Recoll download page for up to date version information.
You will most probably be able to find a binary package for Qt for your
system. You may have to compile Xapian but this is not difficult (if you
are using FreeBSD, there is a port).
@ -173,7 +189,7 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
7.3.2. Building
Recoll has been built on Linux, FreeBSD, macosx, and Solaris, most
Recoll has been built on Linux, FreeBSD, Mac OS X, and Solaris, most
versions after 2005 should be ok, maybe some older ones too (Solaris 8 is
ok). If you build on another system, and need to modify things, I would
very much welcome patches.
@ -350,14 +366,18 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
and edit the configuration file before restarting the command. This will
start the initial indexing, which may take some time.
Paramers affecting what we index:
Most of the following parameters can be changed from the Index
Configuration menu in the recoll interface. Some can only be set by
editing the configuration file.
7.4.1.1. Parameters affecting what documents we index:
topdirs
Specifies the list of directories or files to index (recursively
for directories). The indexer will not follow symbolic links
inside the indexed trees by default (see the followLinks options
though).
for directories). You can use symbolic links as elements of this
list. See the followLinks option about following symbolic links
found under the top elements (not followed by default).
skippedNames
@ -471,7 +491,72 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
Beagle plugin as ~/.beagle/ToIndex so there should be no need to
change it.
Parameters affecting where and how we store things:
7.4.1.2. Parameters affecting how we generate terms:
Changing some of these parameters will imply a full reindex. Also, when
using multiple indexes, it may not make sense to search indexes that don't
share the values for these parameters, because they usually affect both
search and index operations.
nonumbers
If this set to true, no terms will be generated for numbers. For
example "123", "1.5e6", 192.168.1.4, would not be indexed
("value123" would still be). Numbers are often quite interesting
to search for, and this should probably not be set except for
special situations, ie, scientific documents with huge amounts of
numbers in them. This can only be set for a whole index, not for a
subtree.
nocjk
If this set to true, specific east asian (Chinese Korean Japanese)
characters/word splitting is turned off. This will save a small
amount of cpu if you have no CJK documents. If your document base
does include such text but you are not interested in searching it,
setting nocjk may be a significant time and space saver.
cjkngramlen
This lets you adjust the size of n-grams used for indexing CJK
text. The default value of 2 is probably appropriate in most
cases. A value of 3 would allow more precision and efficiency on
longer words, but the index will be approximately twice as large.
indexstemminglanguages
A list of languages for which the stem expansion databases will be
built. See recollindex(1) or use the recollindex -l command for
possible values. You can add a stem expansion database for a
different language by using recollindex -s, but it will be deleted
during the next indexing. Only languages listed in the
configuration file are permanent.
defaultcharset
The name of the character set used for files that do not contain a
character set definition (ie: plain text files). This can be
redefined for any sub-directory. If it is not set at all, the
character set used is the one defined by the nls environment
(LC_ALL, LC_CTYPE, LANG), or iso8859-1 if nothing is set.
maildefcharset
This can be used to define the default character set specifically
for mail messages which don't specify it. This is mainly useful
for readpst (libpst) dumps, which are utf-8 but do not say so.
localfields
This allows setting fields for all documents under a given
directory. Typical usage would be to set an "rclaptg" field, to be
used in mimeview to select a specific viewer. If several fields
are to be set, they should be separated with a colon (':')
character (which there is currently no way to escape). Ie:
localfields= rclaptg=gnus:other = val, then select specifier
viewer with mimetype|tag=... in mimeview.
7.4.1.3. Parameters affecting where and how we store things:
dbdir
@ -519,7 +604,7 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
default, which is flushing every 10000 documents (memory usage
depends on average document size). The default value is 10.
Miscellani:
7.4.1.4. Miscellaneous parameters:
loglevel,daemloglevel
@ -533,44 +618,11 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
value, and is the default. The daemversion is specific to the
indexing monitor daemon.
indexstemminglanguages
A list of languages for which the stem expansion databases will be
built. See recollindex(1) or use the recollindex -l command for
possible values. You can add a stem expansion database for a
different language by using recollindex -s, but it will be deleted
during the next indexing. Only languages listed in the
configuration file are permanent.
defaultcharset
The name of the character set used for files that do not contain a
character set definition (ie: plain text files). This can be
redefined for any sub-directory. If it is not set at all, the
character set used is the one defined by the nls environment
(LC_ALL, LC_CTYPE, LANG), or iso8859-1 if nothing is set.
filtermaxseconds
Maximum filter execution time, after which it is aborted. Some
postscript programs just loop...
maildefcharset
This can be used to define the default character set specifically
for mail messages which don't specify it. This is mainly useful
for readpst (libpst) dumps, which are utf-8 but do not say so.
localfields
This allows setting fields for all documents under a given
directory. Typical usage would be to set an "rclaptg" field, to be
used in mimeview to select a specific viewer. If several fields
are to be set, they should be separated with a ':' character
(which there is currently no way to escape). Ie: localfields=
rclaptg=gnus:other = val, then select specifier viewer with
mimetype|tag=... in mimeview.
filtersdir
A directory to search for the external filter scripts used to
@ -610,28 +662,73 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
Useful for cases where you don't need the functionality or when it
is unusable because aspell crashes during dictionary generation.
nocjk
If this set to true, specific east asian (Chinese Korean Japanese)
characters/word splitting is turned off. This will save a small
amount of cpu if you have no CJK documents. If your document base
does include such text but you are not interested in searching it,
setting nocjk may be a significant time and space saver.
cjkngramlen
This lets you adjust the size of n-grams used for indexing CJK
text. The default value of 2 is probably appropriate in most
cases. A value of 3 would allow more precision and efficiency on
longer words, but the index will be approximately twice as large.
guesscharset
Decide if we try to guess the character set of files if no
internal value is available (ie: for plain text files). This does
not work well in general, and should probably not be used.
7.4.2. The mimemap file
7.4.2. The fields file
This file contains information about dynamic fields handling in Recoll.
Some very basic fields have hard-wired behaviour, and, mostly, you should
not change the original data inside the fields file. But you can create
custom fields fitting your data and handle them just like they were native
ones.
The fields file has several sections, which each define an aspect of
fields processing. Quite often, you'll have to modify several sections to
obtain the desired behaviour.
We will only give a short description here, you should refer to the
comments inside the file for more detailed information.
Field names should be lowercase alphabetic ASCII.
[prefixes]
A field becomes indexed (searchable) by having a prefix defined in
this section.
[stored]
A field becomes stored (displayable inside results) by having its
name listed in this section (typically with an empty value).
[aliases]
This section defines lists of synonyms for the canonical names
used inside the [prefixes] and [stored] sections
filter-specific sections
Some filters may need specific configuration for handling fields.
Only the mail message filter currently has such a section (named
[mail]). It allows indexing arbitrary mail headers in addition to
the ones indexed by default. Other such sections may appear in the
future.
Here follows a small example of a personal fields file. This would extract
a specific mail header and use it as a searchable field, with data
displayable inside result lists. (Side note: as the mail filter does no
decoding on the values, only plain ascii headers can be indexed, and only
the first occurrence will be used for headers that occur several times).
[prefixes]
# Index mailmytag contents (with the given prefix)
mailmytag = XMTAG
[stored]
# Store mailmytag inside the document data record (so that it can be
# displayed - as %(mailmytag) - in result lists).
mailmytag =
[mail]
# Extract the X-My-Tag mail header, and use it internally with the
# mailmytag field name
x-my-tag = mailmytag
7.4.3. The mimemap file
mimemap specifies the file name extension to mime type mappings.
@ -655,7 +752,7 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
given Recoll version. Having it there avoids cluttering the more
user-oriented and locally customized skippedNames.
7.4.3. The mimeconf file
7.4.4. The mimeconf file
mimeconf specifies how the different mime types are handled for indexing,
and which icons are displayed in the recoll result lists.
@ -667,7 +764,7 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
recoll in the result lists (the values are the basenames of the png images
inside the iconsdir directory (specified in recoll.conf).
7.4.4. The mimeview file
7.4.5. The mimeview file
mimeview specifies which programs are started when you click on an Edit
link in a result list. Ie: HTML is normally displayed using firefox, but
@ -693,9 +790,9 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
user preferences, all mimeview entries will be ignored except the one
labelled application/x-all (which is set to use xdg-open by default).
7.4.5. Examples of configuration adjustments
7.4.6. Examples of configuration adjustments
7.4.5.1. Adding an external viewer for an non-indexed type
7.4.6.1. Adding an external viewer for an non-indexed type
Imagine that you have some kind of file which does not have indexable
content, but for which you would like to have a functional Edit link in
@ -725,7 +822,7 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
configuration, which you do not need to alter. mimeview can also be
modified from the Gui.
7.4.5.2. Adding indexing support for a new file type
7.4.6.2. Adding indexing support for a new file type
Let us now imagine that the above .blob files actually contain indexable
text and that you know how to extract it with a command line program.

322
src/README
View File

@ -102,7 +102,7 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
6.1.1. Filter HTML output
6.2. Field data processing configuration
6.2. Field data processing
6.3. API
@ -132,13 +132,15 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
7.4.1. Main configuration file
7.4.2. The mimemap file
7.4.2. The fields file
7.4.3. The mimeconf file
7.4.3. The mimemap file
7.4.4. The mimeview file
7.4.4. The mimeconf file
7.4.5. Examples of configuration adjustments
7.4.5. The mimeview file
7.4.6. Examples of configuration adjustments
7.5. The KDE Kicker Recoll applet
@ -868,6 +870,32 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
that it may produce very slow searches, and that it may be worth in
some cases to set up separate databases instead.
* date for searching or filtering on dates. The syntax for the argument
is based on the ISO8601 standard for dates and time intervals. Only
dates are supported, no times. The general syntax is 2 elements
separated by a / character. Each element can be a date or a period of
time. Periods are specified as PnYnMnD. The n numbers are the
respective numbers of years, months or days, any of which may be
missing. Dates are specified as YYYY-MM-DD. The days and months parts
may be missing. If the / is present but an element is missing, the
missing element is interpreted as the lowest or highest date in the
index. Exemples:
* 2001-03-01/2002-05-01 the basic syntax for an interval of dates.
* 2001-03-01/P1Y2M the same specified with a period.
* 2001/ from the beginning of 2001 to the latest date in the index.
* 2001 the whole year of 2001
* P2D/ means 2 days ago up to now if there are no documents with
dates in the future.
* /2003 all documents from 2003 or older.
Periods can also be specified with small letters (ie: p2y).
* mime or format for specifying the mime type. This one is quite special
because you can specify several values which will be OR'ed (the normal
default for the language is AND). Ex: mime:text/plain mime:text/html.
@ -1156,6 +1184,10 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
Wildcards. Wildcards can be used inside search terms in all forms of
searches. More about wildcards.
Automatic suffixes. Words like odt or ods can be automatically turned into
query language ext:xxx clauses. This can be enabled in the Search
preferences panel in the GUI.
Disabling stem expansion. Entering a capitalized word in any search field
will prevent stem expansion (no search for gardening if you enter Garden
instead of garden). This is the only case where character case should make
@ -1321,15 +1353,16 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
the search terms. This can slow down result list display significantly
for big documents, and you may want to turn it off.
* Replace abstracts from documents: this decides if we should synthesize
and display an abstract in place of an explicit abstract found within
the document itself.
* Synthetic abstract size: adjust to taste...
* Synthetic abstract context words: how many words should be displayed
around each term occurrence.
* Query language magic file name suffixes: a list of words which
automatically get turned into ext:xxx file name suffix clauses when
starting a query language query (ie: doc xls xlsx...). This will save
some typing for people who use file types a lot when querying.
External indexes: This panel will let you browse for additional indexes
that you may want to search. External indexes are designated by their
database directory (ie: /home/someothergui/.recoll/xapiandb,
@ -1650,7 +1683,7 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
----------------------------------------------------------------------
6.2. Field data processing configuration
6.2. Field data processing
Fields are named pieces of information in or about documents, like title,
author, abstract.
@ -1675,15 +1708,11 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
for the document, and can be returned and displayed with search
results.
A field can be either or both indexed and stored.
A field can be either or both indexed and stored. This and other aspects
of fields handling is defined inside the fields configuration file.
A field becomes indexed by having a prefix defined in the [prefixes]
section of the fields file. See the comments in there for details
A field becomes stored by appearing in the [stored] section of the fields
file.
See the comments inside the fields for more details.
You can find more information in the section about the fields file, or in
comments inside the file.
----------------------------------------------------------------------
@ -2041,7 +2070,13 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
displayed from the recoll File menu. The list is stored in the missing
text file inside the configuration directory.
A list of common file types which need external commands:
A list of common file types which need external commands follows. Many of
the filters need the iconv command, which is not always listed as a
dependancy.
As of Recoll release 1.14, a number of XML-based formats that were handled
by ad hoc filter code now use xsltproc, which usually comes with libxslt.
These are: abiword, fb2 (ebooks), kword, openoffice, svg.
* Openoffice: supported natively, but needs the unzip command to be
installed.
@ -2054,6 +2089,8 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
* MS Excel and PowerPoint: catdoc.
* MS Open XML (docx): needs xsltproc.
* Wordperfect files: libwpd.
* RTF: unrtf
@ -2067,13 +2104,12 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
* djvu: DjVuLibre
* mp3: Recoll will use the id3info command from the id3lib package to
extract tag information. Without it, only the file names will be
indexed.
* flac files need metaflac.
* ogg files need ogginfo.
* mp3, flac, ogg vorbis: Recoll releases before 1.13 use the id3info
command from the id3lib package to extract mp3 tag information. (Some
gcc versions after 4.4 may have trouble compiling id3lib. You can find
a workaround here), metaflac (standard flac tools) for flac files, and
ogginfo (vorbis tools) for ogg files. Releases 1.14 and later use a
single Python filter based on mutagen for all audio file types.
* Pictures: Recoll uses the Exiftool Perl package to extract tag
information. Most image file formats are supported. Note that there
@ -2084,12 +2120,14 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
* chm: files in microsoft help format need Python and the pychm module
(which needs chmlib).
* ics: iCalendar files need Python and the icalendar module.
* ics: up to Recoll 1.13, iCalendar files need Python and the icalendar
module. For newer versions, icalendar is not needed
* zip: Zip archives need Python (and the standard zipfile module).
Text, HTML, mail folders, Openoffice and Scribus files are processed
internally. Lyx is used to index Lyx files. Many filters need sed and awk.
internally. Lyx is used to index Lyx files. Many filters need iconv and
the standard sed and awk.
----------------------------------------------------------------------
@ -2097,11 +2135,18 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
7.3.1. Prerequisites
At the very least, you will need to download and install the xapian core
package and the qt run-time and development packages. Check the Recoll
download page for up to date version information.
C++ compiler. Up to Recoll version 1.13.04, its absence can manifest
itself by strange messages about a missing iconv_open.
You will most probably be able to find a binary package for qt for your
Development files for Xapian core
Development files for Qt .
Development files for X11 and zlib.
Check the Recoll download page for up to date version information.
You will most probably be able to find a binary package for Qt for your
system. You may have to compile Xapian but this is not difficult (if you
are using FreeBSD, there is a port).
@ -2113,7 +2158,7 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
7.3.2. Building
Recoll has been built on Linux, FreeBSD, macosx, and Solaris, most
Recoll has been built on Linux, FreeBSD, Mac OS X, and Solaris, most
versions after 2005 should be ok, maybe some older ones too (Solaris 8 is
ok). If you build on another system, and need to modify things, I would
very much welcome patches.
@ -2282,14 +2327,20 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
and edit the configuration file before restarting the command. This will
start the initial indexing, which may take some time.
Paramers affecting what we index:
Most of the following parameters can be changed from the Index
Configuration menu in the recoll interface. Some can only be set by
editing the configuration file.
----------------------------------------------------------------------
7.4.1.1. Parameters affecting what documents we index:
topdirs
Specifies the list of directories or files to index (recursively
for directories). The indexer will not follow symbolic links
inside the indexed trees by default (see the followLinks options
though).
for directories). You can use symbolic links as elements of this
list. See the followLinks option about following symbolic links
found under the top elements (not followed by default).
skippedNames
@ -2403,7 +2454,76 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
Beagle plugin as ~/.beagle/ToIndex so there should be no need to
change it.
Parameters affecting where and how we store things:
----------------------------------------------------------------------
7.4.1.2. Parameters affecting how we generate terms:
Changing some of these parameters will imply a full reindex. Also, when
using multiple indexes, it may not make sense to search indexes that don't
share the values for these parameters, because they usually affect both
search and index operations.
nonumbers
If this set to true, no terms will be generated for numbers. For
example "123", "1.5e6", 192.168.1.4, would not be indexed
("value123" would still be). Numbers are often quite interesting
to search for, and this should probably not be set except for
special situations, ie, scientific documents with huge amounts of
numbers in them. This can only be set for a whole index, not for a
subtree.
nocjk
If this set to true, specific east asian (Chinese Korean Japanese)
characters/word splitting is turned off. This will save a small
amount of cpu if you have no CJK documents. If your document base
does include such text but you are not interested in searching it,
setting nocjk may be a significant time and space saver.
cjkngramlen
This lets you adjust the size of n-grams used for indexing CJK
text. The default value of 2 is probably appropriate in most
cases. A value of 3 would allow more precision and efficiency on
longer words, but the index will be approximately twice as large.
indexstemminglanguages
A list of languages for which the stem expansion databases will be
built. See recollindex(1) or use the recollindex -l command for
possible values. You can add a stem expansion database for a
different language by using recollindex -s, but it will be deleted
during the next indexing. Only languages listed in the
configuration file are permanent.
defaultcharset
The name of the character set used for files that do not contain a
character set definition (ie: plain text files). This can be
redefined for any sub-directory. If it is not set at all, the
character set used is the one defined by the nls environment
(LC_ALL, LC_CTYPE, LANG), or iso8859-1 if nothing is set.
maildefcharset
This can be used to define the default character set specifically
for mail messages which don't specify it. This is mainly useful
for readpst (libpst) dumps, which are utf-8 but do not say so.
localfields
This allows setting fields for all documents under a given
directory. Typical usage would be to set an "rclaptg" field, to be
used in mimeview to select a specific viewer. If several fields
are to be set, they should be separated with a colon (':')
character (which there is currently no way to escape). Ie:
localfields= rclaptg=gnus:other = val, then select specifier
viewer with mimetype|tag=... in mimeview.
----------------------------------------------------------------------
7.4.1.3. Parameters affecting where and how we store things:
dbdir
@ -2451,7 +2571,9 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
default, which is flushing every 10000 documents (memory usage
depends on average document size). The default value is 10.
Miscellani:
----------------------------------------------------------------------
7.4.1.4. Miscellaneous parameters:
loglevel,daemloglevel
@ -2465,44 +2587,11 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
value, and is the default. The daemversion is specific to the
indexing monitor daemon.
indexstemminglanguages
A list of languages for which the stem expansion databases will be
built. See recollindex(1) or use the recollindex -l command for
possible values. You can add a stem expansion database for a
different language by using recollindex -s, but it will be deleted
during the next indexing. Only languages listed in the
configuration file are permanent.
defaultcharset
The name of the character set used for files that do not contain a
character set definition (ie: plain text files). This can be
redefined for any sub-directory. If it is not set at all, the
character set used is the one defined by the nls environment
(LC_ALL, LC_CTYPE, LANG), or iso8859-1 if nothing is set.
filtermaxseconds
Maximum filter execution time, after which it is aborted. Some
postscript programs just loop...
maildefcharset
This can be used to define the default character set specifically
for mail messages which don't specify it. This is mainly useful
for readpst (libpst) dumps, which are utf-8 but do not say so.
localfields
This allows setting fields for all documents under a given
directory. Typical usage would be to set an "rclaptg" field, to be
used in mimeview to select a specific viewer. If several fields
are to be set, they should be separated with a ':' character
(which there is currently no way to escape). Ie: localfields=
rclaptg=gnus:other = val, then select specifier viewer with
mimetype|tag=... in mimeview.
filtersdir
A directory to search for the external filter scripts used to
@ -2542,21 +2631,6 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
Useful for cases where you don't need the functionality or when it
is unusable because aspell crashes during dictionary generation.
nocjk
If this set to true, specific east asian (Chinese Korean Japanese)
characters/word splitting is turned off. This will save a small
amount of cpu if you have no CJK documents. If your document base
does include such text but you are not interested in searching it,
setting nocjk may be a significant time and space saver.
cjkngramlen
This lets you adjust the size of n-grams used for indexing CJK
text. The default value of 2 is probably appropriate in most
cases. A value of 3 would allow more precision and efficiency on
longer words, but the index will be approximately twice as large.
guesscharset
Decide if we try to guess the character set of files if no
@ -2565,7 +2639,69 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
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7.4.2. The mimemap file
7.4.2. The fields file
This file contains information about dynamic fields handling in Recoll.
Some very basic fields have hard-wired behaviour, and, mostly, you should
not change the original data inside the fields file. But you can create
custom fields fitting your data and handle them just like they were native
ones.
The fields file has several sections, which each define an aspect of
fields processing. Quite often, you'll have to modify several sections to
obtain the desired behaviour.
We will only give a short description here, you should refer to the
comments inside the file for more detailed information.
Field names should be lowercase alphabetic ASCII.
[prefixes]
A field becomes indexed (searchable) by having a prefix defined in
this section.
[stored]
A field becomes stored (displayable inside results) by having its
name listed in this section (typically with an empty value).
[aliases]
This section defines lists of synonyms for the canonical names
used inside the [prefixes] and [stored] sections
filter-specific sections
Some filters may need specific configuration for handling fields.
Only the mail message filter currently has such a section (named
[mail]). It allows indexing arbitrary mail headers in addition to
the ones indexed by default. Other such sections may appear in the
future.
Here follows a small example of a personal fields file. This would extract
a specific mail header and use it as a searchable field, with data
displayable inside result lists. (Side note: as the mail filter does no
decoding on the values, only plain ascii headers can be indexed, and only
the first occurrence will be used for headers that occur several times).
[prefixes]
# Index mailmytag contents (with the given prefix)
mailmytag = XMTAG
[stored]
# Store mailmytag inside the document data record (so that it can be
# displayed - as %(mailmytag) - in result lists).
mailmytag =
[mail]
# Extract the X-My-Tag mail header, and use it internally with the
# mailmytag field name
x-my-tag = mailmytag
----------------------------------------------------------------------
7.4.3. The mimemap file
mimemap specifies the file name extension to mime type mappings.
@ -2591,7 +2727,7 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
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7.4.3. The mimeconf file
7.4.4. The mimeconf file
mimeconf specifies how the different mime types are handled for indexing,
and which icons are displayed in the recoll result lists.
@ -2605,7 +2741,7 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
----------------------------------------------------------------------
7.4.4. The mimeview file
7.4.5. The mimeview file
mimeview specifies which programs are started when you click on an Edit
link in a result list. Ie: HTML is normally displayed using firefox, but
@ -2633,9 +2769,9 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
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7.4.5. Examples of configuration adjustments
7.4.6. Examples of configuration adjustments
7.4.5.1. Adding an external viewer for an non-indexed type
7.4.6.1. Adding an external viewer for an non-indexed type
Imagine that you have some kind of file which does not have indexable
content, but for which you would like to have a functional Edit link in
@ -2667,7 +2803,7 @@ More documentation can be found in the doc/ directory or at http://www.recoll.or
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7.4.5.2. Adding indexing support for a new file type
7.4.6.2. Adding indexing support for a new file type
Let us now imagine that the above .blob files actually contain indexable
text and that you know how to extract it with a command line program.