This template uses Lua :
Characters in the source string are counted: the first is index 1, the last one is index length of string. The substring requested can be defined by these two indexes. Also, the substring can be defined by one index, and the substring length. The options are:
{{str mid|<string>|<index of first character>|<length of substring>|<index of last character>}}
It returns a part of the <string>, starting with character on position index , length <sublength>, last character returned is end index.
{{str mid|Abcdefghijklmnopqrstuvwxyz|5|3}} → efg If parameter 2 is omitted, start is from character 1:
{{str mid|Abcdefghijklmnopqrstuvwxyz||5}} → Abcde If parameter 3 is omitted, the whole rest of the string is returned:
{{str mid|Abcdefghijklmnopqrstuvwxyz|15}} → opqrstuvwxyz Counting from the end
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By entering a negative value , the index is counted from the end :
{{str mid|Abcdefghijklmnopqrstuvwxyz|-7|4}} → tuvw
{{str mid|Abcdefghijklmnopqrstuvwxyz|-7}} → tuvwxyz Instead if substring length, use index for last character
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By using parameter |4=n , a number, you do not ask for substring length, but the last character (as counted from the start of the input string):
{{str mid|Abcdefghijklmnopqrstuvwxyz|5||7}} → efg Spaces are kept
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In the returned substring, spaces are kept:
>{{str mid|I like this.|2|6}}< → >like< But the input string is trimmed:
>{{str mid| I like this. |2|6}}< → >like< Error messages
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When the ranges (either param2 or the substring length) is out impossible in the string, an error is returned:
{{str mid|Abcdefghijklmnopqrstuvwxyz|30}} → String Module Error: String subset index out of range
{{str mid|Abcdefghijklmnopqrstuvwxyz|0|45}} → efghijklmnopqrstuvwxyz The error can be suppressed by using |ignore errors=true. A blank (empty string) will be returned:
{{str mid|Abcdefghijklmnopqrstuvwxyz|0|45|ignore errors=true}} → efghijklmnopqrstuvwxyz Error category
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|no category=true switches off category adding.|error category=[[Category:Your category name]] sets the category to be added when in case of an error.Default is Category:Errors reported by Module String .
String-handling templates
(help page)
Substring (select chunk of string by its position)
{{str sub new }} Select a substring based on starting and ending index counted in either direction. {{str left }} Keep the first N characters of a string, or duplicate it to N characters. {{str crop }} Return all but the last N characters of a string. {{str index }} Return the N-th character of a string.
{{str right }} Return substring starting at N-th character to end of string. {{str rightc }} Return the last N characters of a string; or a given value if empty. {{str sub old }} Return substring of given length starting at N-th character.
Trimming (select/remove chunk of string by character type)
Select/remove specific item from string
{{ship prefix }} Returns the length of a ship's name prefix, if listed (ship names). {{title year }} Returns the 3-or-4-digit year from a pagename, if any. {{title decade }} Returns the 4-digit decade (e.g. "1740s") from a pagename, if any. {{title number }} Returns any number from a pagename.
Insertion, replacement and length
{{loop }} Repeat character string a specified number of times. {{replace }} Returns the string, after replacing all occurrences of a specified string with another string. {{str rep }} Returns the string, after replacing the first occurrence of a specified string with another string. {{digits }} Returns the string, after removing all characters that are not digits 0–9 {{Nowiki }} Displays wikitext as plain text.
{{str len }} Returns a string's length. {{str ≥ len }} Check if a string is "longer or equally long" or "shorter" than a given length. {{str ≤ len }} Check if a string is "shorter or equally long" or "longer" than a given length. {{str ≠ len }} Check if a string is "not equal" or "equal" to a given length.
Analysis and searching
{{str startswith }}str endswith }} Check if a string starts or ends with a given string. {{str find }}, {{strfind short }} Returns the numerical location of a given string in a string. {{in string }} Returns optional string when given string is not found {{str count }} Count the number of occurrences of a pattern within a string.
{{a or an }} Takes a noun and produces the appropriate indefinite article, based on whether the first letter is a vowel. {{Array }} Array manipulation and retrieval. {{Isnumeric }} Returns number when true, blank when not numeric. {{str letter }} Returns the number of letters that begin a string. {{str number }} Returns the number of numbers that begin a string.
Modules and built-in functions
