Template:Str find word

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This template looks for a word in a comma-separated list of words. It returns a True (found) or False (not found) value.

By default, the True-value returned is the found word itself; the False-value is a blank string.

{{Str find word |source=alpha, foo, bar |word=foo}} (True) → foo

{{Str find word |source=alpha, foo, bar |word=nov}} (False) →

No partial fit. Partial word matching do not count as a hit:

{{Str find word |source=alpha, foobar, bar |word=foo}} (False) →

Case-sensitive: By default, the comparison is case-sensitive (Foo ≠ foo); all text is turned into lowercase. One can make the check case-sensitive by |case=true

{{Str find word |source=alpha, Foo, bar |word=foo |case=false}} (True) → foo

{{Str find word |source=alpha, Foo, bar |word=foo |case=true}} (False) →

Using this template, the editor does not have to apply patterns ('%f[^,][^,]+%f[,]'). No return value interpretation is required (like when 1 then do x), though is optionally possible. There is no inbetween-result: the logic says it is either T or F. The logic can not result in an error.

options

The True and False return values can be set through |yes=, |no=:

{{Str find word |source=alpha, foo, bar |word=foo |yes=Yesss |no=Nooo}} (True) → Yesss

{{Str find word |source=alpha, foo, bar |word=nov |yes=Yesss |no=Nooo}} (False) → Nooo

Specifics

Words

A 'word' is the character string between commas. This can be all characters and inner spaces:

{{Str find word |source=alpha, foo bar sunday, bar |word=foo bar sunday}} (True) → foo bar sunday

{{Str find word |source=alpha, bar(22) [take care]!, foo |word=bar(22) [take care]!}} (True) → bar(22) [take care]!

Return value

True- and False-value can be set through |yes=, |no=:

{{Str find word |source=alpha, foo, bar |word=foo |yes=Yesss |no=Nooo}} (True) → Yesss

{{Str find word |source=alpha, foo, bar |word=nov |yes=Yesss |no=Nooo}} (False) → Nooo

Boolean value read

Setting |booleans=true will read common bolean words as boolean (true, false).

Boolean words for true: 'True', 'T', 'Yes', '1'. False: 'False', 'F', 'No', '0'. Boolean words are always case-insensistive (True=true).

{{Str find word |source=alpha, yes, bar |word=true |booleans=true}} (True) → true

{{Str find word |source=alpha, false, bar |word=0 |booleans=true}} (True) → false

{{Str find word |source=alpha, false, bar |word=0 |booleans=false}}(default) (False) →

Word lists

The word list |source= is comma-separated. Prefixed and suffixed spaces are discarded (trimmed).

 alpha, foo, bar 

Inner spaces are kept, and are part of the 'word':

 alpha, foo, hello world, bar 

Any character apart from ⟨,⟩ comma can be part of the word:

 α(12) [mind the gap]!, foo, hello world, bar 

Multiple spaces (whitespace) inside a string is reduced to a single space:

 alpha,  foo    bar,  

equals  alpha, foo bar, 

Spaces ⟨ ⟩, Comma ⟨,⟩, quote ⟨"⟩, pipe ⟨|⟩

Trimmed spaces

All words are trimmed before checking (leading and trailing whitespace is removed; repeated inner whitespaces are reduced to one space):

{{Str find word |source=alpha , hello   world, foo |word=hello world}} (True) → hello world

...but the remaining in-word space does matter:

{{Str find word |source=alpha, hello   world, foo |word=helloworld}} (False) →

Comma ⟨,⟩

When a comma ⟨,⟩ is part of the word to check. Word strings that contain a comma can be made literal (escape the comma):

N TODO check this doc claim {{Str find word |source=alpha, "hello, world", foo |word="hello, world"}} (True) → "hello,world"

??chk: {{Str find word |source=alpha, "hello, world", foo |word="hello, world"|literals=false}} (True) → "hello,world"

??chk: {{Str find word |source=alpha, "hello, world", foo |word="hello, world"|literals=true}} (True) → "hello,world"

Quote character ⟨"⟩

Conversely, quote characters ⟨"⟩ that are part of the word are escaped by setting |literals=false:

{{Str find word |source=alpha, she said "hello world", "foo" |word=she said "hello world" |literals=false}} (True) → she said "hello world"

Pipe ⟨|⟩

The pipe character can be entered as {{!}}

{{Str find word |source=alpha, hello{{!}}world, foo |word=hello{{!}}world }} (True) → hello|world

Checking multiple words

It is possible to check multiple words against the source wordlist.

AND-words to check

|andwords=: can have a wordlist (comma-separated as |source= is). Each word will be checked against the source. When all and-words are found, the return value is True.

{{Str find word |source=alpha, beta, gamma, foo, bar |andwords=alpha, foo}} (True) → alpha,foo

{{Str find word |source=alpha, beta, gamma, foo, bar |andwords=bar, foo, beta, alpha}} (True) → bar,foo,beta,alpha

{{Str find word |source=alpha, beta, gamma, foo, bar |andwords=alpha, nov}} (False) →

OR-words to check

|orwords=: can have a wordlist (comma-separated as |source= is). Each word will be checked against the source. When a single or-words is found, the return value is True. Default True return value is the list with all words found.

{{Str find word |source=alpha, beta, gamma, foo, bar |orwords=alpha, foo}} (True) → alpha

{{Str find word |source=alpha, happy, gamma, nice, foo, bar |orwords=april, sad, happy, ugly, nice}} (True) → happy,nice

{{Str find word |source=alpha, happy, gamma, nice, foo, bar |orwords=sad, ugly, november}} (False) →

Both AND-words, OR-words to check

|andwords=, :|orwords= can be used together. Each wordlist will get its own logical checks (AND-words must all be present; OR-words at least one)

T: {{Str find word |source=alpha, beta, april, gamma, foo, happy |andwords=alpha, beta |orwords=april, november, sad, ugly}} (True) → alpha,beta,april

{{Str find word |source=alpha, beta, april, gamma, foo, happy |andwords=alpha, november |orwords=april, november, sad, ugly}} (False) →

Examples

|source=	|word=	result		note
|source=alpha, foo, lima	|word=foo	foo	Y
|source=alpha, foo, lima	|word=nov		N
|source=alpha, uc-all	|word=uc-all	uc-all	Y
|source=alpha, hello world_, bar	|word=hello world_	hello world_	Y	The comma is the word-delimiter
|source=alpha,foo   bar , lima	|word=  foo   bar	foo bar	Y	Spaces are trimmed, multi-space into one space
|source=alpha, foo bar, lima	|word=foobar		N	An inner space is a character too
|source=alpha, FOO, bAr, lima	|word=bar, foo		Y	Not case-sensistive by default
|source=alpha, FOO, bAr, lima	|word=bar, foo		N	|case=true: case-sensistive

note

The editor does not have to apply Lua patterns like [%a%d]*

The editor does not have to interpret the return value (as in: "when ='blue' then ..."). They can prescribe the value even (yes-value, no-value).

Usage

Basic

Core function:

{{Str find word
|source =
|word  =
|yes  =
|no   =
}}

When the word is found in the source (True), the function returns the word itself (by default), or |yes= value (when entered non-empty).

When not found (False), the function returns an empty string (''), or the |no= value when entered.

|source=	|word=	result		note
|source=alpha, foo, lima	|word=foo	foo	Y
|source=alpha, uc-all	|word=uc-all	uc-all	Y	"-" (hyphen) is part of the word
|source=alpha, do_something, white	|word=do_something	do_something	Y	"_" (underscore) is part of the word
|source=alpha, foo, lima	|word=november		N
|source=alpha, foobar, lima	|word=foo		N	'foo' is not the complete word
|source=alpha, foo, lima	|word=		N	no |word= entered
|source=alpha, foo, lima	|word=foobar	No, not found	N	full word foo-bar not in the source
|source=alpha, foo, lima	|word=foobar	No, not found	N	word foo not in the source as full word
... |yes=Yes, hit |no=Not found
|source=alpha, foo, lima	|word=foo	Yes, hit	Y
|source=alpha, foo, lima	|word=foobar	No, not found	N

All parameters

All parameters, in three options

{{Str find word |string = |word = |allwords = |orwords = |case= |yes = |no = |explain = }}

{{Str find word |s = |w = |allw= |orw = |case= |yes = |no = |explain = }}

{{Str find word |s= |w= |allw= |orw= |case= |yes= |no= |explain=}}

More options

|source= |s= |1=	|word= |w= |2=	|case=	result		note
|s=alpha, foo, lima	|w=foo			yes
|s=alpha, foo, lima	|w=foobar			no
|s=alpha, foobar, lima	|w=foo			no	'foo' is not the complete word
|s=alpha, FOO, lima	|w=foo			yes	|case=false: a=A (default)
|s=alpha, FOO, lima	|w=foo			no	|case=true: a=/=A

word list

Instead of a single word to check, a list of target words can be entered: |word=alpha, foo, bingo. This |word=-list will be treated with AND-logic: each and all of the words must be present. See:

AND-, OR-wordlist checks

|word= as noted, can be a list of words. all will be checked with the AND-requirement (each word must be present).

|andwords= accepts a list of words that all will be checked with the AND-requirement (each word must be present).

When both |word=, |andwords= are present, they are combined into one single AND-wordlist.

|orwords= accepts a list of words that all will be checked with the OR-requirement (at least one of the words must be present).

Errors and analysis

• The logic itself does not produce errors. There is always a True of False result.

• Pages with Unknown parameters are listed in Category:Pages using str find word with unknown parameters (0).

There are no logical errors foreseen: any flaw in the input will return a False result (for example, no input strings to check were entered).

• |explain=true: when in Preview, display a report on input, output and the logical steps (debug).
• |explain=testcases: When set in ns Template or User on subpage /testcases, the Preview report is static (shown permanently).

See also

The documentation on top is transcluded from Template:Str find word/doc. (edit | history)
Editors can experiment in this template's sandbox (create | mirror) and testcases (create) pages.
Add categories to the /doc subpage. Subpages of this template.