| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Vgrep.Ansi.Parser
Synopsis
- parseAnsi :: Text -> AnsiFormatted
- ansiFormatted :: Parser AnsiFormatted
- attrChange :: Parser (Attr -> Attr)
Documentation
parseAnsi :: Text -> AnsiFormatted Source #
Directly parses ANSI formatted text using ansiFormatted.
Parsing ANSI color codes:
>>>parseAnsi "Hello \ESC[31mWorld\ESC[m!"Cat 12 [Text 6 "Hello ",Format 5 (Attr {attrStyle = KeepCurrent, attrForeColor = SetTo (ISOColor 1), attrBackColor = KeepCurrent, attrURL = KeepCurrent}) (Text 5 "World"),Text 1 "!"]
More elaborate example with nested foreground and background colors:
>>>parseAnsi "\ESC[m\ESC[40mHello \ESC[31mWorld\ESC[39m!"Cat 12 [Format 6 (Attr {attrStyle = KeepCurrent, attrForeColor = KeepCurrent, attrBackColor = SetTo (ISOColor 0), attrURL = KeepCurrent}) (Text 6 "Hello "),Format 5 (Attr {attrStyle = KeepCurrent, attrForeColor = SetTo (ISOColor 1), attrBackColor = SetTo (ISOColor 0), attrURL = KeepCurrent}) (Text 5 "World"),Format 1 (Attr {attrStyle = KeepCurrent, attrForeColor = KeepCurrent, attrBackColor = SetTo (ISOColor 0), attrURL = KeepCurrent}) (Text 1 "!")]
Some CSI sequences are ignored, since they are not supported by Vty:
>>>parseAnsi "\ESC[A\ESC[B\ESC[31mfoo\ESC[1K\ESC[mbar"Cat 6 [Format 3 (Attr {attrStyle = KeepCurrent, attrForeColor = SetTo (ISOColor 1), attrBackColor = KeepCurrent, attrURL = KeepCurrent}) (Text 3 "foo"),Text 3 "bar"]
Non-CSI sequences are not parsed, but included in the output:
>>>parseAnsi "\ESC]710;font\007foo\ESC[31mbar"Cat 17 [Text 14 "\ESC]710;font\afoo",Format 3 (Attr {attrStyle = KeepCurrent, attrForeColor = SetTo (ISOColor 1), attrBackColor = KeepCurrent, attrURL = KeepCurrent}) (Text 3 "bar")]
ansiFormatted :: Parser AnsiFormatted Source #
Parser for ANSI formatted text. Recognized escape sequences are the SGR
(Select Graphic Rendition) sequences (ESC[…m) supported by Attr.
Unsupported SGR sequences and other CSI escape sequences (ESC[…) are
ignored. Other (non-CSI) escape sequences are not parsed, and included in the
output.
This parser does not fail, it will rather consume and return the remaining input as unformatted text.
attrChange :: Parser (Attr -> Attr) Source #
Parser for ANSI CSI escape sequences. Recognized escape sequences are the
SGR (Select Graphic Rendition) sequences (ESC[…m) supported by Attr.
Unsupported SGR sequences and other CSI escape sequences (ESC[…) are
ignored by returning id.
This parser fails when encountering any other (non-CSI) escape sequence.