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Commitd78a7d9

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Improve support of Hunspell in ispell dictionary.
Now it's possible to load recent version of Hunspell for several languages.To handle these dictionaries Hunspell patch adds support for:* FLAG long - sets the double extended ASCII character flag type* FLAG num - sets the decimal number flag type (from 1 to 65535)* AF parameter - alias for flag's setAlso it moves test dictionaries into separate directory.Author: Artur Zakirov with editorization by me
1 parent9445db9 commitd78a7d9

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15 files changed

+1103
-89
lines changed

15 files changed

+1103
-89
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‎doc/src/sgml/textsearch.sgml‎

Lines changed: 140 additions & 8 deletions
Original file line numberDiff line numberDiff line change
@@ -2615,18 +2615,41 @@ SELECT plainto_tsquery('supernova star');
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</para>
26162616

26172617
<para>
2618-
To create an <application>Ispell</> dictionary, use the built-in
2619-
<literal>ispell</literal> template and specify several parameters:
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To create an <application>Ispell</> dictionary perform these steps:
26202619
</para>
2621-
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<itemizedlist spacing="compact" mark="bullet">
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<listitem>
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<para>
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download dictionary configuration files. <productname>OpenOffice</>
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extension files have the <filename>.oxt</> extension. It is necessary
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to extract <filename>.aff</> and <filename>.dic</> files, change
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extensions to <filename>.affix</> and <filename>.dict</>. For some
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dictionary files it is also needed to convert characters to the UTF-8
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encoding with commands (for example, for norwegian language dictionary):
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<programlisting>
2623-
CREATE TEXT SEARCH DICTIONARY english_ispell (
2630+
iconv -f ISO_8859-1 -t UTF-8 -o nn_no.affix nn_NO.aff
2631+
iconv -f ISO_8859-1 -t UTF-8 -o nn_no.dict nn_NO.dic
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</programlisting>
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</para>
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</listitem>
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<listitem>
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<para>
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copy files to the <filename>$SHAREDIR/tsearch_data</> directory
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</para>
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</listitem>
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<listitem>
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<para>
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load files into PostgreSQL with the following command:
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<programlisting>
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CREATE TEXT SEARCH DICTIONARY english_hunspell (
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TEMPLATE = ispell,
2625-
DictFile = english,
2626-
AffFile = english,
2627-
StopWords = english
2628-
);
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DictFile = en_us,
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AffFile = en_us,
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Stopwords = english);
26292649
</programlisting>
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</para>
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</listitem>
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</itemizedlist>
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<para>
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Here, <literal>DictFile</>, <literal>AffFile</>, and <literal>StopWords</>
@@ -2642,6 +2665,56 @@ CREATE TEXT SEARCH DICTIONARY english_ispell (
26422665
example, a Snowball dictionary, which recognizes everything.
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</para>
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<para>
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The <filename>.affix</> file of <application>Ispell</> has the following
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structure:
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<programlisting>
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prefixes
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flag *A:
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. > RE # As in enter > reenter
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suffixes
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flag T:
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E > ST # As in late > latest
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[^AEIOU]Y > -Y,IEST # As in dirty > dirtiest
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[AEIOU]Y > EST # As in gray > grayest
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[^EY] > EST # As in small > smallest
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</programlisting>
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</para>
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<para>
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And the <filename>.dict</> file has the following structure:
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<programlisting>
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lapse/ADGRS
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lard/DGRS
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large/PRTY
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lark/MRS
2690+
</programlisting>
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</para>
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<para>
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Format of the <filename>.dict</> file is:
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<programlisting>
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basic_form/affix_class_name
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</programlisting>
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</para>
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<para>
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In the <filename>.affix</> file every affix flag is described in the
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following format:
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<programlisting>
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condition > [-stripping_letters,] adding_affix
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</programlisting>
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</para>
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<para>
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Here, condition has a format similar to the format of regular expressions.
2710+
It can use groupings <literal>[...]</> and <literal>[^...]</>.
2711+
For example, <literal>[AEIOU]Y</> means that the last letter of the word
2712+
is <literal>"y"</> and the penultimate letter is <literal>"a"</>,
2713+
<literal>"e"</>, <literal>"i"</>, <literal>"o"</> or <literal>"u"</>.
2714+
<literal>[^EY]</> means that the last letter is neither <literal>"e"</>
2715+
nor <literal>"y"</>.
2716+
</para>
2717+
26452718
<para>
26462719
Ispell dictionaries support splitting compound words;
26472720
a useful feature.
@@ -2663,6 +2736,65 @@ SELECT ts_lexize('norwegian_ispell', 'sjokoladefabrikk');
26632736
</programlisting>
26642737
</para>
26652738

2739+
<para>
2740+
<application>MySpell</> format is a subset of <application>Hunspell</>.
2741+
The <filename>.affix</> file of <application>Hunspell</> has the following
2742+
structure:
2743+
<programlisting>
2744+
PFX A Y 1
2745+
PFX A 0 re .
2746+
SFX T N 4
2747+
SFX T 0 st e
2748+
SFX T y iest [^aeiou]y
2749+
SFX T 0 est [aeiou]y
2750+
SFX T 0 est [^ey]
2751+
</programlisting>
2752+
</para>
2753+
2754+
<para>
2755+
The first line of an affix class is the header. Fields of an affix rules are
2756+
listed after the header:
2757+
</para>
2758+
<itemizedlist spacing="compact" mark="bullet">
2759+
<listitem>
2760+
<para>
2761+
parameter name (PFX or SFX)
2762+
</para>
2763+
</listitem>
2764+
<listitem>
2765+
<para>
2766+
flag (name of the affix class)
2767+
</para>
2768+
</listitem>
2769+
<listitem>
2770+
<para>
2771+
stripping characters from beginning (at prefix) or end (at suffix) of the
2772+
word
2773+
</para>
2774+
</listitem>
2775+
<listitem>
2776+
<para>
2777+
adding affix
2778+
</para>
2779+
</listitem>
2780+
<listitem>
2781+
<para>
2782+
condition that has a format similar to the format of regular expressions.
2783+
</para>
2784+
</listitem>
2785+
</itemizedlist>
2786+
2787+
<para>
2788+
The <filename>.dict</> file looks like the <filename>.dict</> file of
2789+
<application>Ispell</>:
2790+
<programlisting>
2791+
larder/M
2792+
lardy/RT
2793+
large/RSPMYT
2794+
largehearted
2795+
</programlisting>
2796+
</para>
2797+
26662798
<note>
26672799
<para>
26682800
<application>MySpell</> does not support compound words.

‎src/backend/tsearch/Makefile‎

Lines changed: 5 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -13,8 +13,11 @@ include $(top_builddir)/src/Makefile.global
1313

1414
DICTDIR=tsearch_data
1515

16-
DICTFILES=synonym_sample.syn thesaurus_sample.ths hunspell_sample.affix\
17-
ispell_sample.affix ispell_sample.dict
16+
DICTFILES=dicts/synonym_sample.syn dicts/thesaurus_sample.ths\
17+
dicts/hunspell_sample.affix\
18+
dicts/ispell_sample.affix dicts/ispell_sample.dict\
19+
dicts/hunspell_sample_long.affix dicts/hunspell_sample_long.dict\
20+
dicts/hunspell_sample_num.affix dicts/hunspell_sample_num.dict
1821

1922
OBJS = ts_locale.o ts_parse.o wparser.o wparser_def.o dict.o\
2023
dict_simple.o dict_synonym.o dict_thesaurus.o\
File renamed without changes.
Lines changed: 35 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,35 @@
1+
FLAG long
2+
3+
AF 7
4+
AF cZ#1
5+
AF cL#2
6+
AF sGsJpUsS#3
7+
AF sSpB#4
8+
AF cZsS#5
9+
AF sScZs\#6
10+
AF sA#7
11+
12+
COMPOUNDFLAG cZ
13+
ONLYINCOMPOUND cL
14+
15+
PFX pB Y 1
16+
PFX pB 0re.
17+
18+
PFX pU N 1
19+
PFX pU 0un.
20+
21+
SFX sJ Y 1
22+
SFX sJ 0INGS[^E]
23+
24+
SFX sG Y 1
25+
SFX sG 0ING[^E]
26+
27+
SFX sS Y 1
28+
SFX sS 0S[^SXZHY]
29+
30+
SFX sA Y 1
31+
SFX sA YIES[^AEIOU]Y
32+
33+
SFX s\ N 1
34+
SFX s\ 0Y/2[^Y]
35+
Lines changed: 8 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,8 @@
1+
book/3
2+
booking/4
3+
footballklubber
4+
foot/5
5+
football/1
6+
ball/6
7+
klubber/1
8+
sky/7
Lines changed: 26 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,26 @@
1+
FLAG num
2+
3+
COMPOUNDFLAG 101
4+
ONLYINCOMPOUND 102
5+
6+
PFX 201 Y 1
7+
PFX 201 0re.
8+
9+
PFX 202 N 1
10+
PFX 202 0un.
11+
12+
SFX 301 Y 1
13+
SFX 301 0INGS[^E]
14+
15+
SFX 302 Y 1
16+
SFX 302 0ING[^E]
17+
18+
SFX 303 Y 1
19+
SFX 303 0S[^SXZHY]
20+
21+
SFX 304 Y 1
22+
SFX 304 YIES[^AEIOU]Y
23+
24+
SFX 305 N 1
25+
SFX 305 0Y/102[^Y]
26+
Lines changed: 8 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,8 @@
1+
book/302,301,202,303
2+
booking/303,201
3+
footballklubber
4+
foot/101,303
5+
football/101
6+
ball/303,101,305
7+
klubber/101
8+
sky/304
File renamed without changes.
File renamed without changes.
File renamed without changes.

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