Lasso Programming: Lasso Language Reference

[ string->unescape ]

Method

[string->unescape] converts all escape sequences contained within the string into their Unicode equivalents, returning the result as a new string. This is the same escape processing which Lasso does for string literals. [string->unescape] permits this process to be applied to already existing string objects.

String escape processing is described under the "Quoted Strings" heading in the Lasso Language Guide:

http://www.lassosoft.com/Language-Guide-Literals

Table 1: Supported Escape Sequences

Sequence	Value	Description
\xhh	Unicode character	1-2 hex digits
\uhhhh	Unicode character	4 hex digits
\Uhhhhhhhh	Unicode character	8 hex digits
\ooo	Unicode character	1-3 octal digits
\:NAME:	Unicode character	Unicode character name
\a	0x07	Bell
\b	0x08	Backspace
\e	0x1B	Escape
\f	0x0C	Form feed
\n	0x0A	Line feed
\r	0x0D	Carriage return
\t	0x09	Tab
\v	0x0B	Vertical tab
\"	0x22	Quotation mark
\'	0x27	Apostrophe
\?	0x3F	Question mark
\\	0x5C	Backslash
\<end of line>	none	Escape whitespace

Syntax

string->unescape

Examples

Beginner

To convert encoded characters to their Unicode equivalents:

Use the [string->unescape] method. The following example converts an encoded character representing a heart into its Unicode equivalent.

Code

'I \\u2665 rhinos'->unescape

Result

I ♥ rhinos

Code

local(mystring = 'BOO!')
#mystring->append(` \:GHOST:!`)

#mystring->unescape

Result

BOO!

Code

local(mystring = `\:HEAVY CHECK MARK:`)
#mystring->append(' OK')

#mystring->unescape

Result

✔ OK

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string->asBytes

string->asString

string->beginsWith

string->chardigitvalue

string->charname

string->chartype

string->compare

string->contains

string->decodehtml

string->decodexml

string->digit

string->eachCharacter

string->eachMatch

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string->encodehtmltoxml

string->encodeSQL

string->encodeSQL92

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string->find

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string->get

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string->getpropertyvalue

string->hasbinaryproperty

string->integer

string->isalnum

string->isalpha

string->isbase

string->isblank

string->iscntrl

string->isdigit

string->isgraph

string->islower

string->isprint

string->ispunct

string->isspace

string->istitle

string->isUAlphabetic

string->isULowercase

string->isupper

string->isUUppercase

string->isUWhiteSpace

string->isWhitespace

string->isxdigit

string->keys

string->length

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string->merge

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string->padLeading

string->padTrailing

string->remove

string->removeleading

string->removetrailing

string->replace

string->reverse

string->size

string->split

string->sub

string->substring

string->titlecase

string->tolower

string->totitle

string->toupper

string->trim

string->unescape

string->uppercase

string->values

String_Concatenate

String_EndsWith

String_Extract

String_FindPosition

string_findregexp

String_Insert

String_IsAlpha

String_IsAlphaNumeric

String_IsDigit

String_IsHexdigit

String_IsLower

string_IsNumeric

String_IsPunctuation

String_IsSpace

String_IsUpper

String_Length

String_LowerCase

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string_replace

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String_ToDecimal

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[ string->unescape ]

Table 1: Supported Escape Sequences

Examples

To convert encoded characters to their Unicode equivalents:

Related Entries

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