User:Akaniji/Extension:AbuseFilter/RulesFormat/ja
拡張:荒らし検知器/文法/日本語
C言語やJava、Perl様のプログラミング言語における条件文と同じような文法です。
The rules are formatted much as conditionals in a C/Java/Perl-like language.
文字列Literals
edit記号列はシングルクォーテーションマークやダブルクォーテーションマークで括ることで、小数・整数といった数字はそのまま入力することで、文字列に指定することができます。改行は\n
で、タブ文字は\t
です。クオーテーションマークは直前にバックスラッシュを入力することで括り閉じを回避できます。
- 例
"記号列はダブルクォーテーションマークでくくって文字列に" '記号列はシングルクォーテーションマークでくくっても文字列に' 'This string shouldn\'t fail' この文字列は途中にシングルクォーテーションマークがありますが、バックスラッシュがあるので失敗しません "この文字列は\n改行されます" 1234 1.234 -123
You can specify a literal by placing it in single or double quotes (for strings), or by typing it in as-is (for numbers, both floating-point and integer). You can get linebreaks with \n
, tab characters with \t
, and you can also escape the quote character with a backslash.
- Examples
"This is a string" 'This is also a string' 'This string shouldn\'t fail' "This string\nHas a linebreak" 1234 1.234 -123
Variables
editThe abuse filter passes various variables by name into the parser. These variables can be accessed by typing their name in, in a place where a literal would work. You can view the variables associated with each request in the abuse log.
- Examples
USER_EDITCOUNT ARTICLE_RECENT_CONTRIBUTORS
Action variable can be 'edit'
, 'move'
or 'createaccount'
. As of May 1, 2009, uploads seem to be completely ignored by Abuse Filter.
You can define more variables for ease of understanding with the assign symbol :=
in a line (closed by ;
) within a condition. Example (from w:en:Special:AbuseFilter/79):
(line1:="(\{\{(r|R)eflist|\{\{(r|R)efs\}\}|<references\s?/>|</references\s?>)"; rcount(line1, removed_lines)) > (rcount(line1, added_lines))
All variables
editVariable description | Variable name | Variable values |
---|---|---|
Edit count of user | user_editcount | |
Name of user account | user_name | |
Time email address was confirmed | user_emailconfirm | |
Age of user account | user_age | in seconds; 0 for IP |
Groups (including implicit) user is in | user_groups | |
Page ID (found in the page's HTML source - search for wgArticleId) | article_articleid | this is 0 for new pages |
Page namespace | article_namespace | |
Page title (without namespace) | article_text | |
Full page title | article_prefixedtext | |
Edit protection level of the page | article_restrictions_edit | |
Move protection level of the page | article_restrictions_move | |
Last ten users to contribute to the page | article_recent_contributors | |
Action | action | edit, move, createaccount, delete |
Edit summary/reason | summary | |
Whether or not the edit is marked as minor | minor_edit | |
Old page wikitext, before the edit | old_wikitext | |
New page wikitext, after the edit | new_wikitext | |
Unified diff of changes made by edit | edit_diff | |
New page size | new_size | |
Old page size | old_size | |
Size change in edit | edit_delta | |
Lines added in edit | added_lines | |
Lines removed in edit | removed_lines | |
All external links in the new text | all_links | |
Links in the page, before the edit | old_links | |
All external links added in the edit | added_links | |
All external links removed in the edit | removed_links | |
Parsed HTML source of the new revision | new_html | |
New page text, stripped of any markup | new_text | |
Disabled | old_html | |
Disabled | old_text | |
Whether or not the change was made through a tor exit node | tor_exit_node | 0, 1 |
Unix timestamp of change | timestamp |
Page/Article Namespace
editSee also Manual:Namespace
English Wikipedia namespaces | |||
---|---|---|---|
Basic namespaces | Talk namespaces | ||
0 | Main | Talk | 1 |
2 | User | User talk | 3 |
4 | Wikipedia | Wikipedia talk | 5 |
6 | File | File talk | 7 |
8 | MediaWiki | MediaWiki talk | 9 |
10 | Template | Template talk | 11 |
12 | Help | Help talk | 13 |
14 | Category | Category talk | 15 |
100 | Portal | Portal talk | 101 |
108 | Book | Book talk | 109 |
Virtual namespaces | |||
-1 | Special | ||
-2 | Media |
Simple comparisons
editYou can compare variables with other variables and literals with the following syntax:
<
and>
— Return true if the left-hand operand is less than/greater than the right-hand operand respectively.<=
and>=
— Return true if the left-hand operand is less than or equal to/greater than or equal to the right-hand operand respectively.==
and!=
— Return true if the left-hand operand is equal to/not equal to the right-hand operand respectively.
Example | Result |
---|---|
1 == 2 | False |
1 <= 2 | True |
1 >= 2 | False |
1 != 2 | True |
1 < 2 | True |
1 > 2 | False |
Arithmetic
editYou can use basic arithmetic symbols to do arithmetic on variables and literals with the following syntax:
-
— Subtract the right-hand operand from the left-hand operand.+
— Add the right-hand operand to the left-hand operand.*
— Multiply the left-hand operand by the right-hand operand./
— Divide the left-hand operand by the right-hand operand.**
— Raise the left-hand operand to the exponential power specified by the right-hand operand.%
— Return the remainder given when the left-hand operand is divided by the right-hand operand.
Example | Result |
---|---|
1 + 1 | 2 |
2 * 2 | 4 |
1 / 2 | 0.5 |
9 ** 2 | 81 |
6 % 5 | 1 |
Keywords
editTwo special keywords are included for often-used functionality
like
returns true if the left-hand operand matches the glob pattern in the right-hand operand.in
returns true if the right-hand operand (a string) contains the left-hand operand.rlike
andregex
return true if the left-hand operand matches (contains) the regex pattern in the right-hand operand. The system uses PCRE.
- Examples
"1234" like "12?4"
Result: True
"1234" like "12*"
Result: True
"foo" in "foobar"
Result: True
"foo" regex "\w+"
Result: True
Functions
editA number of built-in functions are included to ease some common issues. They are executed in the general format functionName(arg1,arg2,arg3)
, and can be used in place of any literal or variable. Its arguments can be given as literals, variables, or even other functions.
length
returns the length of the string given as the first argument.lcase
returns the first argument converted to lower case.ccnorm
normalises confusable/similar characters in the argument, and returns a canonical form.convert
returns the second argument converted to variant language specified by the first argument. ONLY apply on wikis with LanguageConverter class. (New func added on rev:49399, need support of MediaWiki after rev:49397)rmdoubles
removes repeated characters in the argument, and returns the result.rmwhitespace
removes whitespace (spaces, tabs, newlines)specialratio
returns the number of non-alphanumeric characters divided by the total number of characters in the first argument.rmspecials
removes any special characters in the first argument, and returns the result.norm
is equivalent tormwhitespace(rmspecials(rmdoubles(ccnorm(arg1))))
.count
returns the number of times the needle (first string) appears in the haystack (second string). If only one argument is given, splits it by commas and returns the number of segments.
- Examples
length("Wikipedia")
Result: 9
lcase("Wikipedia")
Result: wikipedia
ccnorm("ωɨƙɩᑭƐƉlα")
Result: W1K1PED1A
convert("zh-hant", "维基百科") // assume we work on a wiki with Chinese LanguageConverter class
Result: 維基百科
rmdoubles( "foobybboo" )
Result: fobybo
specialratio("Wikipedia!")
Result: 0.1
norm( "!!ω..ɨ..ƙ..ɩ..ᑭᑭ..Ɛ.Ɖ@@l%%α!!" )
Result: W1K1PED1A
count( "foo", "foofooboofoo" )
Result: 3
count( "foo,bar,baz" )
Result: 3
rmspecials( "FOOBAR!!1" )
Result: FOOBAR1
Boolean operations
editYou can match if and only if all of a number of conditions are true, one of a number of conditions are true, or one and only one of all conditions are true.
x | y
— OR – returns true if one or more of the conditions is true.x & y
— AND – returns true if both of the conditions are true.x ^ y
— XOR – returns true if one, and only one of the two conditions is true.!x
— NOT – returns true if the condition is not true.
- Examples
1 | 1
Result: True
1 | 0
Result: True
0 | 0
Result: False
1 & 1
Result: True
1 & 0
Result: False
0 & 0
Result: False
1 ^ 1
Result: False
1 ^ 0
Result: True
0 ^ 0
Result: False
!1
Result: False
Order of operations
editOperations are generally done left-to-right, but there is an order to which they are resolved. As soon as the filter fails one of the conditions, it will stop checking the rest of them and move on to the next filter. The evaluation order is:
- Anything surrounded by parentheses (
(
and)
) is evaluated as a single unit. - Turning variables/literals into their respective data. (i.e.,
article_namespace
to 0) - Function calls (
norm
,lcase
, etc.) - Unary + and - (i.e.
-1234
,+1234
) - Keywords
- Boolean inversion (
!x
) - Exponentiation (
2**3 → 8
) - Multiplication-related (multiplication, division, modulo)
- Comparisons. (
<
,>
,==
) - Boolean operations. (
&
,|
,^
,in
)