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Module:String (查看源代码)

2024年5月4日 (六) 18:21的版本

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--From Wikipedia:https://zh.wikipedia.org/wiki/Module:String
--From Wikipedia:https://zh.wikipedia.org/wiki/Module:String


--[[
--[[


This module is intended to provide access to basic string functions.
This module is intended to provide access to basic string functions.


Most of the functions provided here can be invoked with named parameters, 
Most of the functions provided here can be invoked with named parameters,
unnamed parameters, or a mixture.  If named parameters are used, Mediawiki will 
unnamed parameters, or a mixture.  If named parameters are used, Mediawiki will
automatically remove any leading or trailing whitespace from the parameter.
automatically remove any leading or trailing whitespace from the parameter.
Depending on the intended use, it may be advantageous to either preserve or
Depending on the intended use, it may be advantageous to either preserve or
remove such whitespace.
remove such whitespace.


Global options
Global options
    ignore_errors: If set to 'true' or 1, any error condition will result in 
    ignore_errors: If set to 'true' or 1, any error condition will result in
      an empty string being returned rather than an error message.
      an empty string being returned rather than an error message.
    
 
    error_category: If an error occurs, specifies the name of a category to 
    error_category: If an error occurs, specifies the name of a category to
      include with the error message.  The default category is
      include with the error message.  The default category is
      [Category:Errors reported by Module String].
      [Category:Errors reported by Module String].
    
 
    no_category: If set to 'true' or 1, no category will be added if an error
    no_category: If set to 'true' or 1, no category will be added if an error
      is generated.
      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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If invoked using named parameters, Mediawiki will automatically remove any leading or
If invoked using named parameters, Mediawiki will automatically remove any leading or
trailing whitespace from the target string.
trailing whitespace from the target string.
]]
]]
function str.len( frame )
function str.len( frame )
   local new_args = str._getParameters( frame.args, {'s'} );
local new_args = str._getParameters( frame.args, {'s'} )
   local s = new_args['s'] or '';
local s = new_args['s'] or ''
   return mw.ustring.len( s )
return mw.ustring.len( s )
end
end


第61行： 第61行：
Parameters
Parameters
    s: The string to return a subset of
    s: The string to return a subset of
    i: The fist index of the substring to return, defaults to 1.
    i: The first index of the substring to return, defaults to 1.
    j: The last index of the string to return, defaults to the last character.
    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
is a negative value, it is interpreted the same as selecting a character by 
is a negative value, it is interpreted the same as selecting a character by
counting from the end of the string.  Hence, a value of -1 is the same as 
counting from the end of the string.  Hence, a value of -1 is the same as
selecting the last character of the string.
selecting the last character of the string.


If the requested indices are out of range for the given string, an error is 
If the requested indices are out of range for the given string, an error is
reported.
reported.
]]
]]
function str.sub( frame )
function str.sub( frame )
   local new_args = str._getParameters( frame.args, { 's', 'i', 'j' } );
local new_args = str._getParameters( frame.args, { 's', 'i', 'j' } )
   local s = new_args['s'] or '';
local s = new_args['s'] or ''
   local i = tonumber( new_args['i'] ) or 1;
local i = tonumber( new_args['i'] ) or 1
   local j = tonumber( new_args['j'] ) or -1;
local j = tonumber( new_args['j'] ) or -1
  
 
   local len = mw.ustring.len( s );
local len = mw.ustring.len( s )


   -- Convert negatives for range checking
-- Convert negatives for range checking
   if i < 0 then
if i < 0 then
     i = len + i + 1;
i = len + i + 1
   end
end
   if j < 0 then
if j < 0 then
     j = len + j + 1;
j = len + j + 1
   end
end
  
 
   if i > len or j > len or i < 1 or j < 1 then
if i > len or j > len or i < 1 or j < 1 then
      return str._error( '截取字符串索引脱离区间' );
      return str._error( '截取字符串索引脱离区间' )
   end
end
   if j < i then
if j < i then
      return str._error( '截取字符串指示脱离顺序' );
      return str._error( '截取字符串指示脱离顺序' )
   end
end
  
 
   return mw.ustring.sub( s, i, j )
return mw.ustring.sub( s, i, j )
end
end


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]]
]]
function str.sublength( frame )
function str.sublength( frame )
   local i = tonumber( frame.args.i ) or 0
local i = tonumber( frame.args.i ) or 0
   local len = tonumber( frame.args.len )
local len = tonumber( frame.args.len )
   return mw.ustring.sub( frame.args.s, i + 1, len and ( i + len ) )
return mw.ustring.sub( frame.args.s, i + 1, len and ( i + len ) )
end
 
--[[
_match
 
This function returns a substring from the source string that matches a
specified pattern. It is exported for use in other modules
 
Usage:
strmatch = require("Module:String")._match
sresult = strmatch( s, pattern, start, match, plain, nomatch )
 
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.
 
For information on constructing Lua patterns, a form of [regular expression], see:
 
* http://www.lua.org/manual/5.1/manual.html#5.4.1
* http://www.mediawiki.org/wiki/Extension:Scribunto/Lua_reference_manual#Patterns
* http://www.mediawiki.org/wiki/Extension:Scribunto/Lua_reference_manual#Ustring_patterns
 
]]
-- This sub-routine is exported for use in other modules
function str._match( s, pattern, start, match_index, plain_flag, nomatch )
if s == '' then
     return str._error( '目标字符串是空的' )
end
if pattern == '' then
     return str._error( '模式字符串是空的' )
end
start = tonumber(start) or 1
if math.abs(start) < 1 or math.abs(start) > mw.ustring.len( s ) then
     return str._error( '要求的起始点脱离区间' )
end
if match_index == 0 then
     return str._error( '匹配索引脱离区间' )
end
if plain_flag then
pattern = str._escapePattern( pattern )
end
 
local result
if match_index == 1 then
-- Find first match is simple case
result = mw.ustring.match( s, pattern, start )
else
if start > 1 then
s = mw.ustring.sub( s, start )
end
 
local iterator = mw.ustring.gmatch(s, pattern)
if match_index > 0 then
-- Forward search
for w in iterator do
match_index = match_index - 1
if match_index == 0 then
result = w
break
end
end
else
-- Reverse search
local result_table = {}
local count = 1
for w in iterator do
result_table[count] = w
count = count + 1
end
 
result = result_table[ count + match_index ]
end
end
 
if result == nil then
if nomatch == nil then
       return str._error( '找不到匹配' )
else
return nomatch
end
else
return result
end
end
end


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match
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.


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{{#invoke:String|match|source_string|pattern_string|start_index|match_number|plain_flag|nomatch_output}}
{{#invoke:String|match|source_string|pattern_string|start_index|match_number|plain_flag|nomatch_output}}
OR
OR
{{#invoke:String|pos|s=source_string|pattern=pattern_string|start=start_index
{{#invoke:String|match|s=source_string|pattern=pattern_string|start=start_index
    |match=match_number|plain=plain_flag|nomatch=nomatch_output}}
    |match=match_number|plain=plain_flag|nomatch=nomatch_output}}


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    start: The index within the source string to start the search.  The first
    start: The index within the source string to start the search.  The first
      character of the string has index 1.  Defaults to 1.
      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 
    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 
      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 
      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
      counting from the last match.  Hence match = -1 is the same as requesting
      the last match.  Defaults to 1.
      the last match.  Defaults to 1.
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If invoked using named parameters, Mediawiki will automatically remove any leading or
If invoked using named parameters, Mediawiki will automatically remove any leading or
trailing whitespace from each string.  In some circumstances this is desirable, in 
trailing whitespace from each string.  In some circumstances this is desirable, in
other cases one may want to preserve the whitespace.
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
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.
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 
If one adds the parameter ignore_errors=true, then the error will be suppressed and
an empty string will be returned on any failure.
an empty string will be returned on any failure.


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]]
]]
-- This is the entry point for #invoke:String|match
function str.match( frame )
function str.match( frame )
   local new_args = str._getParameters( frame.args, {'s', 'pattern', 'start', 'match', 'plain', 'nomatch'} );
local new_args = str._getParameters( frame.args, {'s', 'pattern', 'start', 'match', 'plain', 'nomatch'} )
   local s = new_args['s'] or '';
local s = new_args['s'] or ''
   local start = tonumber( new_args['start'] ) or 1;
local start = tonumber( new_args['start'] ) or 1
   local plain_flag = str._getBoolean( new_args['plain'] or false );
local plain_flag = str._getBoolean( new_args['plain'] or false )
   local pattern = new_args['pattern'] or '';
local pattern = new_args['pattern'] or ''
   local match_index = math.floor( tonumber(new_args['match']) or 1 );
local match_index = math.floor( tonumber(new_args['match']) or 1 )
   local nomatch = new_args['nomatch'];
local nomatch = new_args['nomatch']
  
 
   if s == '' then
return str._match( s, pattern, start, match_index, plain_flag, nomatch )
     return str._error( '目标字符串是空的' );
   end
   if pattern == '' then
     return str._error( '模式字符串是空的' );
   end
   if math.abs(start) < 1 or math.abs(start) > mw.ustring.len( s ) then
     return str._error( '要求的起始点脱离区间' );
   end
   if match_index == 0 then
     return str._error( '匹配索引脱离区间' );
   end
   if plain_flag then
     pattern = str._escapePattern( pattern );
   end
  
   local result
   if match_index == 1 then
     -- Find first match is simple case
     result = mw.ustring.match( s, pattern, start )
   else
     if start > 1 then
       s = mw.ustring.sub( s, start );
     end
    
     local iterator = mw.ustring.gmatch(s, pattern);
     if match_index > 0 then
       -- Forward search
       for w in iterator do
         match_index = match_index - 1;
         if match_index == 0 then
           result = w;
           break;
         end
       end  
     else
       -- Reverse search
       local result_table = {};
       local count = 1;
       for w in iterator do
         result_table[count] = w;
         count = count + 1;
       end
      
       result = result_table[ count + match_index ];      
     end
   end    
  
   if result == nil then
     if nomatch == nil then
       return str._error( '找不到匹配' );
     else
       return nomatch;
     end
   else
     return result;
   end
end
end


第233行： 第271行：


If invoked using named parameters, Mediawiki will automatically remove any leading or
If invoked using named parameters, Mediawiki will automatically remove any leading or
trailing whitespace from the target string.  In some circumstances this is desirable, in 
trailing whitespace from the target string.  In some circumstances this is desirable, in
other cases one may want to preserve the whitespace.
other cases one may want to preserve the whitespace.


The first character has an index value of 1.
The first character has an index value of 1.


If one requests a negative value, this function will select a character by counting backwards 
If one requests a negative value, this function will select a character by counting backwards
from the end of the string.  In other words pos = -1 is the same as asking for the last character.
from the end of the string.  In other words pos = -1 is the same as asking for the last character.


第244行： 第282行：
]]
]]
function str.pos( frame )
function str.pos( frame )
   local new_args = str._getParameters( frame.args, {'target', 'pos'} );
local new_args = str._getParameters( frame.args, {'target', 'pos'} )
   local target_str = new_args['target'] or '';
local target_str = new_args['target'] or ''
   local pos = tonumber( new_args['pos'] ) or 0;
local pos = tonumber( new_args['pos'] ) or 0
 
if pos == 0 or math.abs(pos) > mw.ustring.len( target_str ) then
     return str._error( '字符串索引脱离区间' )
end


   if pos == 0 or math.abs(pos) > mw.ustring.len( target_str ) then
return mw.ustring.sub( target_str, pos, pos )
     return str._error( '字符串索引脱离区间' );
   end  
  
   return mw.ustring.sub( target_str, pos, pos );
end
end


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This function duplicates the behavior of {{str_find}}, including all of its quirks.
This function duplicates the behavior of {{str_find}}, including all of its quirks.
This is provided in order to support existing templates, but is NOT RECOMMENDED for 
This is provided in order to support existing templates, but is NOT RECOMMENDED for
new code and templates.  New code is recommended to use the "find" function instead.
new code and templates.  New code is recommended to use the "find" function instead.


第270行： 第308行：
]]
]]
function str.str_find( frame )
function str.str_find( frame )
   local new_args = str._getParameters( frame.args, {'source', 'target'} );
local new_args = str._getParameters( frame.args, {'source', 'target'} )
   local source_str = new_args['source'] or '';
local source_str = new_args['source'] or ''
   local target_str = new_args['target'] or '';
local target_str = new_args['target'] or ''
 
if target_str == '' then
return 1
end
 
local start = mw.ustring.find( source_str, target_str, 1, true )
if start == nil then
start = -1
end


   if target_str == '' then
return start
     return 1;
   end  
  
   local start = mw.ustring.find( source_str, target_str, 1, true )
   if start == nil then
     start = -1
   end
  
   return start
end
end


第305行： 第343行：


If invoked using named parameters, Mediawiki will automatically remove any leading or
If invoked using named parameters, Mediawiki will automatically remove any leading or
trailing whitespace from the parameter.  In some circumstances this is desirable, in 
trailing whitespace from the parameter.  In some circumstances this is desirable, in
other cases one may want to preserve the whitespace.
other cases one may want to preserve the whitespace.


This function returns the first index >= "start" where "target" can be found 
This function returns the first index >= "start" where "target" can be found
within "source".  Indices are 1-based.  If "target" is not found, then this 
within "source".  Indices are 1-based.  If "target" is not found, then this
function returns 0.  If either "source" or "target" are missing / empty, this
function returns 0.  If either "source" or "target" are missing / empty, this
function also returns 0.
function also returns 0.
第316行： 第354行：
]]
]]
function str.find( frame )
function str.find( frame )
   local new_args = str._getParameters( frame.args, {'source', 'target', 'start', 'plain' } );
local new_args = str._getParameters( frame.args, {'source', 'target', 'start', 'plain' } )
   local source_str = new_args['source'] or '';
local source_str = new_args['source'] or ''
   local pattern = new_args['target'] or '';
local pattern = new_args['target'] or ''
   local start_pos = tonumber(new_args['start']) or 1;
local start_pos = tonumber(new_args['start']) or 1
   local plain = new_args['plain'] or true;
local plain = new_args['plain'] or true
    
 
   if source_str == '' or pattern == '' then
if source_str == '' or pattern == '' then
     return 0;
return 0
   end  
end
  
   plain = str._getBoolean( plain );


   local start = mw.ustring.find( source_str, pattern, start_pos, plain )
plain = str._getBoolean( plain )
   if start == nil then
 
     start = 0
local start = mw.ustring.find( source_str, pattern, start_pos, plain )
   end
if start == nil then
  
start = 0
   return start
end
 
return start
end
end


第354行： 第392行：
    count: The number of occurences to replace, defaults to all.
    count: The number of occurences to replace, defaults to all.
    plain: Boolean flag indicating that pattern should be understood as plain
    plain: Boolean flag indicating that pattern should be understood as plain
      text and not as a Lua style regular expression, defaults to true 
      text and not as a Lua style regular expression, defaults to true
]]
]]
function str.replace( frame )
function str.replace( frame )
   local new_args = str._getParameters( frame.args, {'source', 'pattern', 'replace', 'count', 'plain' } );
local new_args = str._getParameters( frame.args, {'source', 'pattern', 'replace', 'count', 'plain' } )
   local source_str = new_args['source'] or '';
local source_str = new_args['source'] or ''
   local pattern = new_args['pattern'] or '';
local pattern = new_args['pattern'] or ''
   local replace = new_args['replace'] or '';
local replace = new_args['replace'] or ''
   local count = tonumber( new_args['count'] );
local count = tonumber( new_args['count'] )
   local plain = new_args['plain'] or true;
local plain = new_args['plain'] or true
    
   if source_str == '' or pattern == '' then
     return source_str;
   end  
   plain = str._getBoolean( plain );


   if plain then
if source_str == '' or pattern == '' then
     pattern = str._escapePattern( pattern );
return source_str
     replace = mw.ustring.gsub( replace, "%%", "%%%%" ); --Only need to escape replacement sequences.
end
   end
plain = str._getBoolean( plain )
  
   local result;


   if count ~= nil then
if plain then
     result = mw.ustring.gsub( source_str, pattern, replace, count );
pattern = str._escapePattern( pattern )
   else
replace = mw.ustring.gsub( replace, "%%", "%%%%" ) --Only need to escape replacement sequences.
     result = mw.ustring.gsub( source_str, pattern, replace );
end
   end    


   return result;
local result
 
if count ~= nil then
result = mw.ustring.gsub( source_str, pattern, replace, count )
else
result = mw.ustring.gsub( source_str, pattern, replace )
end
 
return result
end
end


--[[ 
--[[
    simple function to pipe string.rep to templates.
    simple function to pipe string.rep to templates.
]]
]]
function str.rep( frame )
function str.rep( frame )
   local repetitions = tonumber( frame.args[2] )
local repetitions = tonumber( frame.args[2] )
   if not repetitions then 
if not repetitions then
     return str._error( 'function rep expects a number as second parameter, received "' .. ( frame.args[2] or '' ) .. '"' )
return str._error( 'function rep expects a number as second parameter, received "' .. ( frame.args[2] or '' ) .. '"' )
   end
end
   return string.rep( frame.args[1] or '', repetitions )
return string.rep( frame.args[1] or '', repetitions )
end
end


第413行： 第450行：
ignore_null_flag = arg_value
ignore_null_flag = arg_value
elseif arg_name == 5 or arg_name == '5' or arg_name == "format" then
elseif arg_name == 5 or arg_name == '5' or arg_name == "format" then
format = arg_value or "*{{{1}}}\n";
format = arg_value or "*{{{1}}}\n"
end
end
end
end
第420行： 第457行：
ignore_null_flag = yesno( ignore_null_flag or 'no' )
ignore_null_flag = yesno( ignore_null_flag or 'no' )
is_invoke = true
is_invoke = true
format = mw.ustring.gsub(format or "*{{{1}}}\n", "%{%{%{.-%}%}%}", "%%s" );
format = mw.ustring.gsub(format or "*{{{1}}}\n", "%{%{%{.-%}%}%}", "%%s" )
it = mw.ustring.find(format, "%%s", 1)
it = mw.ustring.find(format, "%%s", 1)
if it == nil then format = format .. "%s" end
if it == nil then format = format .. "%s" end
第441行： 第478行：
separ = mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(separ, 
separ = mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(mw.ustring.gsub(separ, 
"%[", "%["), "%]", "%]"), "%{", "%{"), "%}", "%}"), "%%", "%%%%"), "%)", "%)"), "%-", "%-"),
"%[", "%["), "%]", "%]"), "%{", "%{"), "%}", "%}"), "%%", "%%%%"), "%)", "%)"), "%-", "%-"),
"%^", "%^"), "%$", "%$"), "%(", "%("), "%.", "%."), "%*", "%*"), "%+", "%+"), "%|", "%|");
"%^", "%^"), "%$", "%$"), "%(", "%("), "%.", "%."), "%*", "%*"), "%+", "%+"), "%|", "%|")
end
end
iterator = 1 ; i = 1 ; flag = true
iterator = 1 ; i = 1 ; flag = true
第473行： 第510行：
return body
return body
end
end
return result;
return result
end
--[[
escapePattern
 
This function escapes special characters from a Lua string pattern. See [1]
for details on how patterns work.
 
[1] https://www.mediawiki.org/wiki/Extension:Scribunto/Lua_reference_manual#Patterns
 
Usage:
{{#invoke:String|escapePattern|pattern_string}}
 
Parameters
   pattern_string: The pattern string to escape.
]]
function str.escapePattern( frame )
local pattern_str = frame.args[1]
if not pattern_str then
return str._error( 'No pattern string specified' )
end
local result = str._escapePattern( pattern_str )
return result
end
 
--[[
count
This function counts the number of occurrences of one string in another.
]]
function str.count(frame)
local args = str._getParameters(frame.args, {'source', 'pattern', 'plain'})
local source = args.source or ''
local pattern = args.pattern or ''
local plain = str._getBoolean(args.plain or true)
if plain then
pattern = str._escapePattern(pattern)
end
local _, count = mw.ustring.gsub(source, pattern, '')
return count
end
 
--[[
endswith
This function determines whether a string ends with another string.
]]
function str.endswith(frame)
local args = str._getParameters(frame.args, {'source', 'pattern'})
local source = args.source or ''
local pattern = args.pattern or ''
if pattern == '' then
-- All strings end with the empty string.
return "yes"
end
if mw.ustring.sub(source, -mw.ustring.len(pattern), -1) == pattern then
return "yes"
else
return ""
end
end
end


第505行： 第599行：
]]
]]
function str._getParameters( frame_args, arg_list )
function str._getParameters( frame_args, arg_list )
   local new_args = {};
local new_args = {}
   local index = 1;
local index = 1
   local value;
local value
  
 
   for i,arg in ipairs( arg_list ) do
for _, arg in ipairs( arg_list ) do
     value = frame_args[arg]
value = frame_args[arg]
     if value == nil then
if value == nil then
       value = frame_args[index];
value = frame_args[index]
       index = index + 1;
index = index + 1
     end
end
     new_args[arg] = value;
new_args[arg] = value
   end
end
  
 
   return new_args;
return new_args
end    
end


--[[
--[[
第525行： 第619行：
]]
]]
function str._error( error_str )
function str._error( error_str )
   local frame = mw.getCurrentFrame();
local frame = mw.getCurrentFrame()
    local error_category = frame.args.error_category or '字符串模块报告的错误';
    local error_category = frame.args.error_category or '字符串模块报告的错误'
   local ignore_errors = frame.args.ignore_errors or false;
local ignore_errors = frame.args.ignore_errors or false
   local no_category = frame.args.no_category or false;
local no_category = frame.args.no_category or false
  
 
   if str._getBoolean(ignore_errors) then
if str._getBoolean(ignore_errors) then
     return '';
return ''
   end
end
  
 
    local error_str = '<strong class="error">字符串模块出错：' .. error_str .. '</strong>';
    local error_str = '<strong class="error">字符串模块出错：' .. error_str .. '</strong>'
   if error_category ~= '' and not str._getBoolean( no_category ) then
if error_category ~= '' and not str._getBoolean( no_category ) then
     error_str = '[[Category:' .. error_category .. ']]' .. error_str;
error_str = '[[Category:' .. error_category .. ']]' .. error_str
   end    
end
  
 
   return error_str;
return error_str
end
end


第546行： 第640行：
]]
]]
function str._getBoolean( boolean_str )
function str._getBoolean( boolean_str )
   local boolean_value;
local boolean_value
  
 
   if type( boolean_str ) == 'string' then
if type( boolean_str ) == 'string' then
     boolean_str = boolean_str:lower();
boolean_str = boolean_str:lower()
     if boolean_str == 'false' or boolean_str == 'no' or boolean_str == '0' 
if boolean_str == 'false' or boolean_str == 'no' or boolean_str == '0'
         or boolean_str == '' then
or boolean_str == '' then
       boolean_value = false;
boolean_value = false
     else
else
       boolean_value = true;
boolean_value = true
     end  
end
   elseif type( boolean_str ) == 'boolean' then
elseif type( boolean_str ) == 'boolean' then
     boolean_value = boolean_str;
boolean_value = boolean_str
   else
else
      error( '布尔值找不到' );
      error( '布尔值找不到' )
   end  
end
   return boolean_value
return boolean_value
end
end


--[[
--[[
Helper function that escapes all pattern characters so that they will be treated 
Helper function that escapes all pattern characters so that they will be treated
as plain text.
as plain text.
]]
]]
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
end


return str
return str
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取自“https://arcwiki.mcd.blue/Special:移动版差异/51386”