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Global options | Global options | ||
ignore_errors: If set to 'true' or 1, any error condition will result in | |||
an empty string being returned rather than an error message. | |||
error_category: If an error occurs, specifies the name of a category to | |||
include with the error message. The default category is | |||
[Category:Errors reported by Module String]. | |||
no_category: If set to 'true' or 1, no category will be added if an error | |||
is generated. | |||
Unit tests for this module are available at Module:String/tests. | Unit tests for this module are available at Module:String/tests. | ||
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Parameters | Parameters | ||
s: The string whose length to report | |||
If invoked using named parameters, Mediawiki will automatically remove any leading or | If invoked using named parameters, Mediawiki will automatically remove any leading or | ||
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Parameters | Parameters | ||
s: The string to return a subset of | |||
i: The fist index of the substring to return, defaults to 1. | |||
j: The last index of the string to return, defaults to the last character. | |||
The first character of the string is assigned an index of 1. If either i or j | The first character of the string is assigned an index of 1. If either i or j | ||
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--[[ | --[[ | ||
match | |||
This function returns a substring from the source string that matches a | This function returns a substring from the source string that matches a | ||
specified pattern. | specified pattern. | ||
Usage: | Usage: | ||
{{#invoke:String|match|source_string|pattern_string|start_index|match_number|plain_flag|nomatch_output}} | |||
OR | |||
{{#invoke:String|match|s=source_string|pattern=pattern_string|start=start_index | |||
|match=match_number|plain=plain_flag|nomatch=nomatch_output}} | |||
Parameters | Parameters | ||
s: The string to search | |||
pattern: The pattern or string to find within the string | |||
start: The index within the source string to start the search. The first | |||
character of the string has index 1. Defaults to 1. | |||
match: In some cases it may be possible to make multiple matches on a single | |||
string. This specifies which match to return, where the first match is | |||
match= 1. If a negative number is specified then a match is returned | |||
counting from the last match. Hence match = -1 is the same as requesting | |||
the last match. Defaults to 1. | |||
plain: A flag indicating that the pattern should be understood as plain | |||
text. Defaults to false. | |||
nomatch: If no match is found, output the "nomatch" value rather than an error. | |||
If invoked using named parameters, Mediawiki will automatically remove any leading or | |||
trailing whitespace from each string. In some circumstances this is desirable, in | |||
other cases one may want to preserve the whitespace. | |||
If the match_number or start_index are out of range for the string being queried, then | |||
this function generates an error. An error is also generated if no match is found. | |||
If one adds the parameter ignore_errors=true, then the error will be suppressed and | |||
an empty string will be returned on any failure. | |||
For information on constructing Lua patterns, a form of [regular expression], see: | For information on constructing Lua patterns, a form of [regular expression], see: | ||
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end | end | ||
end | end | ||
-- This is the entry point for #invoke:String|match | -- This is the entry point for #invoke:String|match | ||
function str.match( frame ) | function str.match( frame ) | ||
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Parameters | Parameters | ||
target: The string to search | |||
pos: The index for the character to return | |||
If invoked using named parameters, Mediawiki will automatically remove any leading or | If invoked using named parameters, Mediawiki will automatically remove any leading or | ||
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Parameters | Parameters | ||
source: The string to search | |||
target: The string or pattern to find within source | |||
start: The index within the source string to start the search, defaults to 1 | |||
plain: Boolean flag indicating that target should be understood as plain | |||
text and not as a Lua style regular expression, defaults to true | |||
If invoked using named parameters, Mediawiki will automatically remove any leading or | If invoked using named parameters, Mediawiki will automatically remove any leading or | ||
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Parameters | Parameters | ||
source: The string to search | |||
pattern: The string or pattern to find within source | |||
replace: The replacement text | |||
count: The number of occurences to replace, defaults to all. | |||
plain: Boolean flag indicating that pattern should be understood as plain | |||
text and not as a Lua style regular expression, defaults to true | |||
]] | ]] | ||
function str.replace( frame ) | function str.replace( frame ) | ||
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--[[ | --[[ | ||
simple function to pipe string.rep to templates. | |||
]] | ]] | ||
function str.rep( frame ) | function str.rep( frame ) | ||
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Parameters | Parameters | ||
pattern_string: The pattern string to escape. | |||
]] | ]] | ||
function str.escapePattern( frame ) | function str.escapePattern( frame ) | ||
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function str._escapePattern( pattern_str ) | function str._escapePattern( pattern_str ) | ||
return mw.ustring.gsub( pattern_str, "([%(%)%.%%%+%-%*%?%[%^%$%]])", "%%%1" ) | return mw.ustring.gsub( pattern_str, "([%(%)%.%%%+%-%*%?%[%^%$%]])", "%%%1" ) | ||
end | |||
--[[ | |||
check if string is a number | |||
]] | |||
function str.isNumber( frame ) | |||
if not tonumber( frame.args[1] ) then | |||
return 0 | |||
else | |||
return 1 | |||
end | |||
end | end | ||
return str | return str | ||
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