Virastar (ویراستار)

Virastar is a Persian text cleaner.

A javascript port of aziz/virastar with lots of help from ebraminio/persiantools

see live demo

Install

npm install virastar

Usage

var Virastar = require('virastar');
var virastar = new Virastar();

virastar.cleanup("فارسي را كمی درست تر می نويسيم"); // Outputs: "فارسی را کمی درست‌تر می‌نویسیم"

Browser

<script src="lib/virastar.js"></script>
<script>
  var virastar = new Virastar();
  alert(virastar.cleanup("فارسي را كمی درست تر می نويسيم"));
</script>

Virastar([text] [,options])

text

Type: string

string of persian source to be cleaned.

options

Type: object

Virastar("سلام 123" ,{"fix_english_numbers":false}); // Outputs: "سلام 123"

Options and Specifications

Virastar comes with a list of options to control its behavior.

normalize_eol

default: true

• replaces windows end of lines with unix eol (\n)

decode_htmlentities

default: true

• converts numeral and selected html character-sets into original characters

fix_dashes

default: true

• replaces triple dash to mdash
• replaces double dash to ndash

fix_three_dots

default: true

• removes spaces between dots
• replaces three dots with ellipsis character

normalize_ellipsis

default: true

• replaces more than one ellipsis with one
• replaces (space|tab|zwnj) after ellipsis with one space

normalize_dates

default: true

• re-orders date parts with slash as delimiter

fix_english_quotes_pairs

default: true

• replaces english quote pairs (“”) with their persian equivalent («»)

fix_english_quotes

default: true

• replaces english quote marks with their persian equivalent

fix_hamzeh

default: true

• replaces ه followed by (space|ZWNJ|lrm) follow by ی with هٔ
• replaces ه followed by (space|ZWNJ|lrm|nothing) follow by ء with هٔ
• replaces هٓ or single-character ۀ with the standard هٔ

fix_hamzeh_arabic

default: false

• converts arabic hamzeh ة to هٔ

cleanup_rlm

default: true

• converts Right-to-left marks followed by persian characters to zero-width non-joiners (ZWNJ)

cleanup_zwnj

default: true

• converts all soft hyphens (­) into zwnj
• removes more than one zwnj
• cleans zwnj after characters that don't conncet to the next
• cleans zwnj before and after numbers, english words, spaces and punctuations
• removes unnecessary zwnj on start/end of each line

fix_arabic_numbers

default: true

• replaces arabic numbers with their persian equivalent

fix_english_numbers

default: true

• replaces english numbers with their persian equivalent

fix_numeral_symbols

default: true

• replaces english percent signs (U+066A)
• replaces dots between numbers into decimal separator (U+066B)
• replaces commas between numbers into thousands separator (U+066C)

fix_misc_non_persian_chars

default: true

• replaces arabic normal/swash kaf with its persian equivalent
• replaces arabic/urdu/pushtu/uyghur yeh with its persian equivalent
• replaces kurdish he with its persian equivalent

fix_punctuations

default: true

• replaces ,, ; with its persian equivalent

fix_question_mark

default: true

• replaces question marks with its persian equivalent

fix_perfix_spacing

default: true

• puts zwnj between the word and the prefix:
  • mi*, nemi*, bi*

fix_suffix_spacing

default: true

• puts zwnj between the word and the suffix:
  • *ha, *haye
  • *am, *at, *ash, *ei, *eid, *eem, *and, *man, *tan, *shan
  • *tar, *tari, *tarin
  • *hayee, *hayam, *hayat, *hayash, *hayetan, *hayeman, *hayeshan

fix_suffix_misc

default: true

• replaces ه followed by ئ or ی, and then by ی, with ه‌ای

fix_spacing_for_braces_and_quotes

default: true

• removes inside spaces and more than one outside for (), [], {}, “” and «»

fix_spacing_for_punctuations

default: true

• removes space before punctuations
• removes more than one space after punctuations, except followed by new-lines
• removes space after colon that separates time parts
• removes space after dots in numbers
• removes space before some common domain tlds
• removes space between question and exclamation marks
• removes space between same marks

fix_diacritics

default: true

• cleans zwnj before diacritic characters
• cleans more than one diacritic characters
• cleans spaces before diacritic characters

remove_diacritics

default: false

• removes all diacritic characters

fix_persian_glyphs

default: true

• converts incorrect persian glyphs to standard characters

fix_misc_spacing

default: true

• removes space before parentheses on misc cases
• removes space before braces containing numbers

cleanup_spacing

default: true

• replaces more than one space with just a single one
• cleans whitespace/zwnj between new-lines

cleanup_line_breaks

default: true

• cleans more than two contiguous line breaks

cleanup_begin_and_end

default: true

• removes space/tab/zwnj/nbsp from the beginning of the new-lines
• removes spaces, tabs, zwnj, direction marks and new lines from the beginning and end of text

markdown

markdown_normalize_braces

default: true

• removes spaces between [] and () ([text] (link) into [text](link))
• removes space between ! and opening brace (! [alt](src) into ![alt](src))
• removes spaces inside double (), [], {} ([[ text ]] into [[text]])
• removes spaces between double (), [], {} ([[text] ] into [[text]])

markdown_normalize_lists

default: true

• removes extra lines between two items on a markdown list beginning with -, * or #

skip_markdown_ordered_lists_numbers_conversion

default: false

• skips converting english numbers of ordered lists in markdown

aggressive editing

cleanup_extra_marks

default: true

• replaces more than one exclamation mark with just one
• replaces more than one english or persian question mark with just one
• re-orders consecutive marks: ?! into !?

kashidas_as_parenthetic

default: true

• replaces kashidas to ndash in parenthetic

cleanup_kashidas

default: true

• converts kashida between numbers to ndash
• removes all kashidas between non-whitespace characters

extras

preserve_frontmatter

default: true

• preserves frontmatter data in the text

preserve_HTML

default: true

• preserves all html tags in the text

preserve_comments

default: true

• preserves all html comments in the text

preserve_entities

default: true

• preserves all html entities in the text

preserve_URIs

default: true

• preserves all uri strings in the text

preserve_brackets

default: false

• preserves strings inside square brackets ([])

preserve_braces

default: false

• preserves strings inside curly braces ({})

preserve_nbsps

default: true

• preserves all no-break space entities in the text

License

This software is licensed under the MIT License. View the license.