The avatar for @mirek
Mirek Rusin
Published
Edited
Sep 23, 2021
6 stars
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// DQUOTE = %x22 ;as per section 6.1 of RFC 2234
dquote = P.literal('"')
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_2dquote = P.literal('""')
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// LF = %x0A ;as per section 6.1 of RFC 2234
lf = P.literal('\n')
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// CR = %x0D ;as per section 6.1 of RFC 2234
cr = P.literal('\r')
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// CRLF = CR LF ;as per section 6.1 of RFC 2234
crlf = P.either(cr, lf)
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// TEXTDATA = %x20-21 / %x23-2B / %x2D-7E
textdata = P.charRanges(['\x20', '\x21'], ['\x23', '\x2b'], ['\x2d', '\x7e'])
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// COMMA = %x2C
comma = P.literal(',')
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// non-escaped = *TEXTDATA
nonEscaped = P.join(P.star(textdata))
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// escaped = DQUOTE *(TEXTDATA / COMMA / CR / LF / 2DQUOTE) DQUOTE
escaped = P.sorrounded1(dquote, P.join(P.star(P.union(textdata, comma, cr, lf, P.map(_2dquote, () => '"')))))
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// field = (escaped / non-escaped)
field = P.either(escaped, nonEscaped)
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// record = field *(COMMA field)
record = P.separated1(comma, field)
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// file = [header CRLF] record *(CRLF record) [CRLF]
file = P.separated1(crlf, record)
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parse = P.exhaustive(P.trim(file))
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P = import("https://cdn.skypack.dev/@prelude/parser@v1.2.1")
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