Regexp

The regular expression (abbreviated as regex or regexp) is a sequence of characters that form a search pattern mainly for use in pattern-matching with strings or string-matching. Functionality is similar to find and replace operations with more complexity and specificity. See the wikipedia entry for a detailed description of Regexp and a table of used characters.

Regexps can be used in the Search and Replace fields in the Editor for Desktop, for the Convert to tags feature in File Import Settings and for customizing segmentation rules.

Important

Memsource supports Java regexp, but will reject complex regular expressions to protect the system from overload. Complex regexps are those with quantifiers (except possessives) on groups which contain other quantifiers (except possessives).

General Examples

Examples for converting text into tags when importing files and using regexp in the editor for Search and Replace functions:

Example	Description
<[^>]+>	represents <html_tag>
\{[^\}]+\}	represents {variable},
\[[^\]]+\]	represents [variable],
\[\[.+?\]\]	represents [[aa[11]bb]].
\$[^\$]+\$	represents $operator_Name1$.
\d+	represents numbers. Also, [0-9]+
[A-Za-z0-9]	represents any alphanumeric character.
.+\@.+\..+	email address name@domain.com
\d{4}[-]\d{2}[-]\d{2}	the date 2018-08-01
\s$	a whitespace at the end of the segment
^\s	a whitespace at the beginning of the segment
\s\s	a double whitespace
^\d	a digit at the beginning of the segment
\w+\s\s\w+	a double whitespace between words
\s\n	a newline preceded by any whitespace character
\S\n	a newline preceded by any non-whitespace character
<[^>]+>\|\$[^=]+=	converts php variables and html code ($svariable['name'] =)
^\s*\'[^:]+:	converts javascript's field key with added whitespaces at the beginning of the line ( 'key' :)

TXT Import

Examples of regular expressions when importing a specific text:

## ErrorMessage ##1## The number must be higher then 0. ##Z##

To import text between ##1## and ##Z## ,use regexp: (?<=##1## ).*(?= ##Z##)
ErrorMessage ("The number must be higher then 0.")

To import text between (" and ") , use regexp: (?<=$").*(?="$)
'errorMessage' = 'The number must be higher than 0.'

To import text after the = sign and between ' and ' , use regexp: (?<=\= ').*(?=')
msgstr ("The number must be higher than 0.")

To import msgstr strings in monolingual PO files using a TXT filter, use regexp: (?<=msgstr ").*(?=")
# Note: This is a note

To exclude lines starting with # , use regexp: (^[^#].*)
values '126', 'DCeT', 'Text (en)'

To import only text in quotes and with (en), such as Text (en)' use regexp: (?<=')[^']*$en$(?=')

JSON Import

JSON structure example:

{
"list": {
	"id": "1",
	"value": "text 1 for translation."
	},
"text": {
	"id": "2",
	"value": "text 2 for translation."
	},
"menu": {
	"id": "3",
	"value": "text 3 for translation."
	 },"array": ["blue","green"],"arrays": [{        "color": "blue",        "title": "BLUE"
         },         {        "color": "green",        "title": "GREEN"         }    ]}

for importing every value regardless of the level, use: (^|.*/)value
for importing only one value from a list, use: list/value
for importing a value from a list and/or menu, use the | (OR) operator: list/value|menu/value
for importing only the first instance of a value from a menu, use: menu\[1\]/value
for importing the content of a JSON array following a certain key, use: (^|.*/)array\[.*\]
to import the content of a specific array of objects, use: (^|.*/)arrays\[.*\].*

YAML Import

YAML flie example:

title: A
text: translate A
categories:
  title: B
  text: translate B
categories:
  title: C
  text: translate C
categories:
  content:
      title: D
      text: translate D

regexp for importing:

only 'translate A' : text
only 'translate C': categories\[2\]/text
only 'translate D': categories\[\d+\]/content[\1\]/text
all text: text|categories\[\d+\]/text|categories\[\d+\]/content[\d+\]/text

Segmentation Rules

Okapi, Java and Unicode are used for segmentation rules in SRX files.

Using regexp in SRX files is complex and a basic knowledge of regular expression use is recommended before attempting to work with them.

Nobreak rules (Abbreviations etc.) and Break rules (End of the sentence with a dot, etc) are in SRX files.

Example	Description
[\p{C}]	Invisible control character.
[\p{Z}]	Whitespace
[\p{Lu}]	An uppercase letter that has a lowercase variant.
[\p{N}]	Any kind of numeric character.
\Q ... \E	Start and end of a quotation - (\QApprox.\E). This is used for Abbreviations.
\t	Tabulator
\n	Newline
\u2029	Paragraph separator
\u200B	Zero-width space
\u3002	Ideographic full stop
\ufe52	Small full stop
\uff0e	Fullwidth full stop
\uff61	Halfwidth ideographic full stop
\ufe56	Small question mark
\uff1f	Fullwidth question mark
\u203c	Double exclamation mark
\u2048	Question exclamation mark
\u2762	Heavy exclamation mark ornament
\u2763	Heavy heart exclamation mark ornament
\ufe57	Small exclamation mark
\uff01	Fullwidth exclamation mark