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Working CSS syntax highlighting
This commit is contained in:
Kovid Goyal
parent
c9f9df0eb0
commit
966f4ab841
@ -6,11 +6,127 @@ from __future__ import (unicode_literals, division, absolute_import,
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__license__ = 'GPL v3'
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__license__ = 'GPL v3'
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__copyright__ = '2013, Kovid Goyal <kovid at kovidgoyal.net>'
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__copyright__ = '2013, Kovid Goyal <kovid at kovidgoyal.net>'
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import re
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from functools import partial
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from calibre.gui2.tweak_book.editor.syntax.base import SyntaxHighlighter
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from calibre.gui2.tweak_book.editor.syntax.base import SyntaxHighlighter
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from PyQt4.Qt import QTextCharFormat
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space_pat = re.compile(r'[ \n\t\r\f]+')
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cdo_pat = re.compile(r'/\*')
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sheet_tokens = [(re.compile(k), v, n) for k, v, n in [
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(r'\:[a-zA-Z0-9_-]+', 'pseudo_selector', 'pseudo-selector'),
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(r'\.[a-zA-Z0-9_-]+', 'class_selector', 'class-selector'),
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(r'\#[a-zA-Z0-9_-]+', 'id_selector', 'id-selector'),
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(r'@[a-zA-Z0-9_-]+', 'preproc', 'atrule'),
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(r'[a-zA-Z0-9_-]+', 'tag', 'tag'),
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(r'[~\^\*!%&\[\]\(\)<>\|+=@:;,./?-]', 'operator', 'operator'),
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]]
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content_tokens = [(re.compile(k), v, n) for k, v, n in [
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(r'url\(.*?\)', 'string', 'url'),
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(r'@\S+', 'preproc', 'at-rule'),
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(r'(azimuth|background-attachment|background-color|'
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r'background-image|background-position|background-repeat|'
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r'background|border-bottom-color|border-bottom-style|'
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r'border-bottom-width|border-left-color|border-left-style|'
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r'border-left-width|border-right|border-right-color|'
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r'border-right-style|border-right-width|border-top-color|'
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r'border-top-style|border-top-width|border-bottom|'
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r'border-collapse|border-left|border-width|border-color|'
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r'border-spacing|border-style|border-top|border|caption-side|'
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r'clear|clip|color|content|counter-increment|counter-reset|'
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r'cue-after|cue-before|cue|cursor|direction|display|'
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r'elevation|empty-cells|float|font-family|font-size|'
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r'font-size-adjust|font-stretch|font-style|font-variant|'
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r'font-weight|font|height|letter-spacing|line-height|'
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r'list-style-type|list-style-image|list-style-position|'
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r'list-style|margin-bottom|margin-left|margin-right|'
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r'margin-top|margin|marker-offset|marks|max-height|max-width|'
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r'min-height|min-width|opacity|orphans|outline|outline-color|'
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r'outline-style|outline-width|overflow(?:-x|-y)?|padding-bottom|'
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r'padding-left|padding-right|padding-top|padding|page|'
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r'page-break-after|page-break-before|page-break-inside|'
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r'pause-after|pause-before|pause|pitch|pitch-range|'
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r'play-during|position|quotes|richness|right|size|'
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r'speak-header|speak-numeral|speak-punctuation|speak|'
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r'speech-rate|stress|table-layout|text-align|text-decoration|'
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r'text-indent|text-shadow|text-transform|top|unicode-bidi|'
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r'vertical-align|visibility|voice-family|volume|white-space|'
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r'widows|width|word-spacing|z-index|bottom|left|'
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r'above|absolute|always|armenian|aural|auto|avoid|baseline|'
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r'behind|below|bidi-override|blink|block|bold|bolder|both|'
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r'capitalize|center-left|center-right|center|circle|'
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r'cjk-ideographic|close-quote|collapse|condensed|continuous|'
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r'crop|crosshair|cross|cursive|dashed|decimal-leading-zero|'
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r'decimal|default|digits|disc|dotted|double|e-resize|embed|'
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r'extra-condensed|extra-expanded|expanded|fantasy|far-left|'
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r'far-right|faster|fast|fixed|georgian|groove|hebrew|help|'
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r'hidden|hide|higher|high|hiragana-iroha|hiragana|icon|'
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r'inherit|inline-table|inline|inset|inside|invert|italic|'
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r'justify|katakana-iroha|katakana|landscape|larger|large|'
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r'left-side|leftwards|level|lighter|line-through|list-item|'
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r'loud|lower-alpha|lower-greek|lower-roman|lowercase|ltr|'
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r'lower|low|medium|message-box|middle|mix|monospace|'
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r'n-resize|narrower|ne-resize|no-close-quote|no-open-quote|'
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r'no-repeat|none|normal|nowrap|nw-resize|oblique|once|'
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r'open-quote|outset|outside|overline|pointer|portrait|px|'
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r'relative|repeat-x|repeat-y|repeat|rgb|ridge|right-side|'
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r'rightwards|s-resize|sans-serif|scroll|se-resize|'
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r'semi-condensed|semi-expanded|separate|serif|show|silent|'
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r'slow|slower|small-caps|small-caption|smaller|soft|solid|'
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r'spell-out|square|static|status-bar|super|sw-resize|'
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r'table-caption|table-cell|table-column|table-column-group|'
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r'table-footer-group|table-header-group|table-row|'
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r'table-row-group|text|text-bottom|text-top|thick|thin|'
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r'transparent|ultra-condensed|ultra-expanded|underline|'
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r'upper-alpha|upper-latin|upper-roman|uppercase|url|'
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r'visible|w-resize|wait|wider|x-fast|x-high|x-large|x-loud|'
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r'x-low|x-small|x-soft|xx-large|xx-small|yes)\b', 'keyword', 'keyword'),
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(r'(indigo|gold|firebrick|indianred|yellow|darkolivegreen|'
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r'darkseagreen|mediumvioletred|mediumorchid|chartreuse|'
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r'mediumslateblue|black|springgreen|crimson|lightsalmon|brown|'
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r'turquoise|olivedrab|cyan|silver|skyblue|gray|darkturquoise|'
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r'goldenrod|darkgreen|darkviolet|darkgray|lightpink|teal|'
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r'darkmagenta|lightgoldenrodyellow|lavender|yellowgreen|thistle|'
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r'violet|navy|orchid|blue|ghostwhite|honeydew|cornflowerblue|'
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r'darkblue|darkkhaki|mediumpurple|cornsilk|red|bisque|slategray|'
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r'darkcyan|khaki|wheat|deepskyblue|darkred|steelblue|aliceblue|'
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r'gainsboro|mediumturquoise|floralwhite|coral|purple|lightgrey|'
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r'lightcyan|darksalmon|beige|azure|lightsteelblue|oldlace|'
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r'greenyellow|royalblue|lightseagreen|mistyrose|sienna|'
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r'lightcoral|orangered|navajowhite|lime|palegreen|burlywood|'
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r'seashell|mediumspringgreen|fuchsia|papayawhip|blanchedalmond|'
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r'peru|aquamarine|white|darkslategray|ivory|dodgerblue|'
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r'lemonchiffon|chocolate|orange|forestgreen|slateblue|olive|'
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r'mintcream|antiquewhite|darkorange|cadetblue|moccasin|'
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r'limegreen|saddlebrown|darkslateblue|lightskyblue|deeppink|'
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r'plum|aqua|darkgoldenrod|maroon|sandybrown|magenta|tan|'
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r'rosybrown|pink|lightblue|palevioletred|mediumseagreen|'
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r'dimgray|powderblue|seagreen|snow|mediumblue|midnightblue|'
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r'paleturquoise|palegoldenrod|whitesmoke|darkorchid|salmon|'
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r'lightslategray|lawngreen|lightgreen|tomato|hotpink|'
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r'lightyellow|lavenderblush|linen|mediumaquamarine|green|'
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r'blueviolet|peachpuff)\b', 'colorname', 'colorname'),
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(r'\!important', 'preproc', 'important'),
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(r'\#[a-zA-Z0-9]{1,6}', 'number', 'hexnumber'),
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(r'[\.-]?[0-9]*[\.]?[0-9]+(em|px|pt|pc|in|mm|cm|ex|s|rem)\b', 'number', 'dimension'),
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(r'[\.-]?[0-9]*[\.]?[0-9]+%($|[ \n\t\f\r;}{()\[\]])', 'number', 'dimension'),
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(r'-?[0-9]+', 'number', 'number'),
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(r'[~\^\*!%&<>\|+=@:,./?-]+', 'operator', 'operator'),
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(r'[\[\]();]+', 'bracket', 'bracket'),
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(r'[a-zA-Z_][a-zA-Z0-9_]*', 'identifier', 'ident')
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]]
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class State(object):
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class State(object):
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NORMAL = 0
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NORMAL = 0
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IN_COMMENT = 1
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IN_SQS = 2
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IN_DQS = 3
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IN_CONTENT = 4
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def __init__(self, num):
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def __init__(self, num):
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self.parse = num & 0b1111
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self.parse = num & 0b1111
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@ -22,11 +138,85 @@ class State(object):
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def normal(state, text, i, formats):
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def normal(state, text, i, formats):
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' The normal state (outside everything) '
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' The normal state (outside content blocks {})'
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return [(len(text), None)]
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m = space_pat.match(text, i)
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if m is not None:
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return [(len(m.group()), None)]
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cdo = cdo_pat.match(text, i)
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if cdo is not None:
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state.parse = State.IN_COMMENT
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return [(len(cdo.group()), formats['comment'])]
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if text[i] == '"':
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state.parse = State.IN_DQS
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return [(1, formats['string'])]
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if text[i] == "'":
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state.parse = State.IN_SQS
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return [(1, formats['string'])]
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if text[i] == '{':
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state.parse = State.IN_CONTENT
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state.blocks += 1
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return [(1, formats['bracket'])]
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for token, fmt, name in sheet_tokens:
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m = token.match(text, i)
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if m is not None:
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return [(len(m.group()), formats[fmt])]
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return [(len(text) - i, formats['unknown-normal'])]
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def content(state, text, i, formats):
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' Inside content blocks '
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m = space_pat.match(text, i)
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if m is not None:
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return [(len(m.group()), None)]
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cdo = cdo_pat.match(text, i)
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if cdo is not None:
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state.parse = State.IN_COMMENT
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return [(len(cdo.group()), formats['comment'])]
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if text[i] == '"':
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state.parse = State.IN_DQS
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return [(1, formats['string'])]
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if text[i] == "'":
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state.parse = State.IN_SQS
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return [(1, formats['string'])]
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if text[i] == '}':
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state.blocks -= 1
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state.parse = State.NORMAL if state.blocks < 1 else State.IN_CONTENT
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return [(1, formats['bracket'])]
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if text[i] == '{':
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state.blocks += 1
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return [(1, formats['bracket'])]
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for token, fmt, name in content_tokens:
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m = token.match(text, i)
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if m is not None:
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return [(len(m.group()), formats[fmt])]
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return [(len(text) - i, formats['unknown-normal'])]
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def comment(state, text, i, formats):
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' Inside a comment '
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pos = text.find('*/', i)
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if pos == -1:
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return [(len(text), formats['comment'])]
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state.parse = State.NORMAL
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return [(pos - i + 2, formats['comment'])]
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def in_string(q, state, text, i, formats):
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'Inside a string'
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pos = text.find(q, i)
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if pos == -1:
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if text[-1] == '\\':
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return [(len(text) - i, formats['string'])]
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state.parse = (State.NORMAL if state.blocks < 1 else State.IN_CONTENT)
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return [(len(text) - i, formats['unterminated-string'])]
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state.parse = (State.NORMAL if state.blocks < 1 else State.IN_CONTENT)
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return [(pos - i + len(q), formats['string'])]
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state_map = {
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state_map = {
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State.NORMAL:normal,
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State.NORMAL:normal,
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State.IN_COMMENT: comment,
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State.IN_SQS: partial(in_string, "'"),
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State.IN_DQS: partial(in_string, '"'),
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State.IN_CONTENT: content,
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}
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}
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class CSSHighlighter(SyntaxHighlighter):
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class CSSHighlighter(SyntaxHighlighter):
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@ -38,14 +228,49 @@ class CSSHighlighter(SyntaxHighlighter):
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SyntaxHighlighter.__init__(self, parent)
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SyntaxHighlighter.__init__(self, parent)
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def create_formats(self):
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def create_formats(self):
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# t = self.theme
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t = self.theme
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self.formats = {
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self.formats = {
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'comment': t['Comment'],
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'error': t['Error'],
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'string': t['String'],
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'preproc': t['PreProc'],
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'keyword': t['Keyword'],
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'colorname': t['Constant'],
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'number': t['Number'],
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'operator': t['Function'],
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'bracket': t['Special'],
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'identifier': t['Identifier'],
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'id_selector': t['Special'],
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'class_selector': t['Special'],
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'pseudo_selector': t['Special'],
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'tag': t['Identifier'],
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}
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}
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for name, msg in {
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'unknown-normal': _('Invalid text'),
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'unterminated-string': _('Unterminated string'),
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}.iteritems():
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f = self.formats[name] = QTextCharFormat(self.formats['error'])
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f.setToolTip(msg)
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if __name__ == '__main__':
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if __name__ == '__main__':
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from calibre.gui2.tweak_book.editor.text import launch_editor
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from calibre.gui2.tweak_book.editor.text import launch_editor
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launch_editor('''\
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launch_editor('''\
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@charset "utf-8";
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@charset "utf-8";
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/* A demonstration css sheet */
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/* A demonstration css sheet */
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body {
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color: green;
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font-size: 12pt
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}
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div#main > a:hover {
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background: url("../image.png");
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font-family: "A font", sans-serif;
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}
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li[rel="mewl"], p.mewl {
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margin-top: 2% 0 23pt 1em;
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}
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''', path_is_raw=True, syntax='css')
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''', path_is_raw=True, syntax='css')
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@ -33,13 +33,13 @@ THEMES = {
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Comment fg=99968b
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Comment fg=99968b
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Todo fg=8f8f8f
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Todo fg=8f8f8f
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Constant fg=e5786d
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String fg=95e454
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String fg=95e454
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Identifier fg=cae682
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Identifier fg=cae682
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Function fg=cae682
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Function fg=cae682
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Type fg=cae682
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Type fg=cae682
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Statement fg=8ac6f2
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Statement fg=8ac6f2
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Keyword fg=8ac6f2
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Keyword fg=8ac6f2
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Constant fg=e5786d
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PreProc fg=e5786d
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PreProc fg=e5786d
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Number fg=e5786d
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Number fg=e5786d
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Special fg=e7f6da
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Special fg=e7f6da
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