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Ахарх?ара

{{Str left|<string>|<count>}}

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Gives the resultant <count> of characters creating a substring of characters from the start of the trimmed string (i.e. the substring returned will have length <count>, exclusive of leading whitespace characters, which are trimmed first before <count> is invoked).

If <count> is invalid, empty or zero, an empty string is returned. If undefined, it defaults to 1.

Limitations

• Length to 500: The maximum substring stops at 500 long, yet gives no error message. Only 500 characters can be extracted even if the <string> is longer.
• Inexpensive (uses no other templates).

А?ыр?шт???а

• {{ Str left | Lorem ipsum dolor sit amet | 10 }} → Lorem ipsu
• {{Str left|   Lorem ipsum dolor sit amet | 4 }} → Lore, (note leading spaces trimmed!)
• {{ Str left | Lorem ipsum dolor sit amet | 1 }} → L
• {{ Str left | Lorem ipsum dolor sit amet | 0 }} →
• {{ Str left | Lorem ipsum dolor sit amet | }} →
• {{ Str left | Lorem ipsum dolor sit amet }} → L
• {{ Str left | Lorem ipsum dolor sit amet | 40 }} → Lorem ipsum dolor sit ametLorem ipsum do
• {{ Str left | à?é | 2 }} → à?

  This example is demonstrating the safety of this template with the UTF-8 encoding (this should work now) :

Examples of limitations

All the limitations of use for this template and shown below are caused by the current implementation of the {{padleft:}} parser function used in this template, which does not filter its third parameter containing the characters used for padding a string to the specified length (it currently counts incorrectly the characters to extract from the padding string, and incorrectly measures its effective length; in addition this parameter is limited to 500 bytes).

The following examples are demonstrating that this template does not interpret character entity references as the character they represent. It treats them as multiple characters and can leave them truncated.

• {{ Str left | a c | 3 }} → a&n

  The output "a c" may have been intended, but the named character entity was truncated, leaving no length available for the final "c".

• {{ Str left | aBc | 3 }} → a&#

  This should display "abc", but the named character entity was truncated, leaving no length available for the final "c".

• {{ Str left | a c | 3 }} → a c

  The result is correct, as expected.

• {{ Str left | a c | 3 }} → a&#

  This last example should be equivalent to the previous one, but it is not.

This template will erase nowiki tags without counting their length:

• {{ Str left | a<nowiki/>bcd | 3 }} → abc

  Returns three characters as expected

• {{ Str left | a<nowiki>E</nowiki>bcd | 3 }} → abc

  Returns three characters, but not aEb as might have been expected.

• {{ Str left | a<nowiki/>bc | 10 }} → abcabcabca

  Returns 10 characters as expected.

HTML comments, and the "noinclude", "includeonly" and "onlyinclude" wiki markup tags are also ignored, because they are preprocessed in template parameters, before including it and substituting parameters:

• {{ Str left | a<noinclude/>bc | 3 }} → abc
• {{ Str left | a<!-- comment -->bc | 3 }} → abc

Note also that the specified length will cause the input string to be padded by repeating it, if this length is larger than the input string length:

• {{ Str left | Abc. | 10 }} → Abc.Abc.Ab

Template data

Здесь приведена документация в формате TemplateData для данного шаблона, которая используется в визуальном редакторе и прочих инструментах.

Документация TemplateData для шаблона: Str left

A template to give the <count> substring of characters from the start of the trimmed string

Параметры шаблона[Править данные шаблона]

Параметр		Описание	Тип	Статус
String	1	The string to be trimmed and counted	Строковый (без форматирования)	обязательный
Count	2	Gives the <count> substring of characters from the start of the trimmed string	Число	обязательный

Ш?ах?. иара убас

• Bugzilla:22555 (historical; need for correcting padleft/padright functions and to provide better string-handling parser functions)

The above адокументациа is transcluded from Ашаблон:Str left/doc. (аредакциазура | а?оурых)
Editors can experiment in this ашаблон's асендбокс (а??ара | mirror) and testcases (а??ара) pages.
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