mirror of https://github.com/buggins/dlangui.git
CSS parser
This commit is contained in:
Vadim Lopatin
parent
2037fcfe23
commit
1686fde76d
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@ -247,6 +247,7 @@
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<ItemGroup>
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<Compile Include="src\dlangui\core\collections.d" />
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<Compile Include="src\dlangui\core\css.d" />
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<Compile Include="src\dlangui\core\cssparser.d" />
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<Compile Include="src\dlangui\core\dom.d" />
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<Compile Include="src\dlangui\core\editable.d" />
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<Compile Include="src\dlangui\core\events.d" />
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@ -338,12 +339,6 @@
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<Compile Include="deps\DerelictUtil\source\derelict\util\system.d" />
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<Compile Include="deps\DerelictUtil\source\derelict\util\wintypes.d" />
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<Compile Include="deps\DerelictUtil\source\derelict\util\xtypes.d" />
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<Compile Include="deps\gl3n\gl3n\frustum.d" />
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<Compile Include="deps\gl3n\gl3n\linalg.d" />
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<Compile Include="deps\gl3n\gl3n\math.d" />
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<Compile Include="deps\gl3n\gl3n\plane.d" />
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<Compile Include="deps\gl3n\gl3n\util.d" />
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<Compile Include="deps\gl3n\gl3n\aabb.d" />
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<Compile Include="3rdparty\fontconfig\functions.d" />
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<Compile Include="3rdparty\fontconfig\package.d" />
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<Compile Include="3rdparty\fontconfig\types.d" />
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@ -106,6 +106,7 @@
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<Compile Include="src\dlangui\core\collections.d" />
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<Compile Include="src\dlangui\core\config.d" />
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<Compile Include="src\dlangui\core\css.d" />
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<Compile Include="src\dlangui\core\cssparser.d" />
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<Compile Include="src\dlangui\core\dom.d" />
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<Compile Include="src\dlangui\core\editable.d" />
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<Compile Include="src\dlangui\core\events.d" />
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@ -195,10 +196,6 @@
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<Compile Include="deps\DerelictFT\source\derelict\freetype\ft.d" />
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<Compile Include="deps\DerelictFT\source\derelict\freetype\functions.d" />
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<Compile Include="deps\DerelictFT\source\derelict\freetype\types.d" />
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<Compile Include="deps\gl3n\gl3n\linalg.d" />
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<Compile Include="deps\gl3n\gl3n\math.d" />
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<Compile Include="deps\gl3n\gl3n\util.d" />
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<Compile Include="deps\gl3n\gl3n\plane.d" />
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<Compile Include="src\dlangui\graphics\xpm\colors.d" />
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<Compile Include="3rdparty\fontconfig\functions.d" />
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<Compile Include="3rdparty\fontconfig\package.d" />
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@ -15,7 +15,6 @@
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<Path>deps\DerelictSDL2\source</Path>
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<Path>deps\DerelictGL3\source</Path>
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<Path>deps\DerelictUtil\source</Path>
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<Path>deps\gl3n</Path>
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<Path>deps\dlib</Path>
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</Includes>
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</Includes>
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@ -83,6 +82,7 @@
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<Compile Include="src\dlangui\package.d" />
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<Compile Include="src\dlangui\core\collections.d" />
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<Compile Include="src\dlangui\core\css.d" />
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<Compile Include="src\dlangui\core\cssparser.d" />
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<Compile Include="src\dlangui\core\dom.d" />
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<Compile Include="src\dlangui\core\editable.d" />
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<Compile Include="src\dlangui\core\events.d" />
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@ -120,6 +120,7 @@
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<Compile Include="src\dlangui\graphics\xpm\colors.d" />
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<Compile Include="src\dlangui\graphics\xpm\reader.d" />
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<Compile Include="src\dlangui\platforms\common\platform.d" />
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<Compile Include="src\dlangui\platforms\common\startup.d" />
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<Compile Include="src\dlangui\platforms\sdl\sdlapp.d" />
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<Compile Include="src\dlangui\platforms\windows\win32drawbuf.d" />
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<Compile Include="src\dlangui\platforms\windows\win32fonts.d" />
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@ -200,6 +201,9 @@
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<Compile Include="3rdparty\win32\winver.d" />
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<Compile Include="3rdparty\win32\ws2tcpip.d" />
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<Compile Include="3rdparty\win32\wtypes.d" />
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<Compile Include="3rdparty\fontconfig\functions.d" />
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<Compile Include="3rdparty\fontconfig\package.d" />
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<Compile Include="3rdparty\fontconfig\types.d" />
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<Compile Include="deps\DerelictFT\source\derelict\freetype\ft.d" />
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<Compile Include="deps\DerelictFT\source\derelict\freetype\functions.d" />
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<Compile Include="deps\DerelictFT\source\derelict\freetype\types.d" />
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@ -231,51 +235,6 @@
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<Compile Include="deps\DerelictUtil\source\derelict\util\system.d" />
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<Compile Include="deps\DerelictUtil\source\derelict\util\wintypes.d" />
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<Compile Include="deps\DerelictUtil\source\derelict\util\xtypes.d" />
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<Compile Include="deps\dlib\dlib\image\io\bmp.d" />
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<Compile Include="deps\dlib\dlib\image\io\idct.d" />
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<Compile Include="deps\dlib\dlib\image\io\io.d" />
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<Compile Include="deps\dlib\dlib\image\io\jpeg.d" />
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<Compile Include="deps\dlib\dlib\image\io\png.d" />
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<Compile Include="deps\dlib\dlib\image\io\tga.d" />
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<Compile Include="deps\dlib\dlib\image\io\utils.d" />
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<Compile Include="deps\dlib\dlib\image\arithmetics.d" />
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<Compile Include="deps\dlib\dlib\image\color.d" />
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<Compile Include="deps\dlib\dlib\image\image.d" />
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<Compile Include="deps\dlib\dlib\core\bitio.d" />
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<Compile Include="deps\dlib\dlib\core\compound.d" />
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<Compile Include="deps\dlib\dlib\core\memory.d" />
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<Compile Include="deps\dlib\dlib\core\oop.d" />
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<Compile Include="deps\dlib\dlib\core\tuple.d" />
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<Compile Include="deps\dlib\dlib\filesystem\delegaterange.d" />
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<Compile Include="deps\dlib\dlib\filesystem\dirrange.d" />
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<Compile Include="deps\dlib\dlib\filesystem\filesystem.d" />
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<Compile Include="deps\dlib\dlib\filesystem\local.d" />
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<Compile Include="deps\dlib\dlib\functional\combinators.d" />
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<Compile Include="deps\dlib\dlib\functional\range.d" />
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<Compile Include="deps\dlib\dlib\math\decomposition.d" />
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<Compile Include="deps\dlib\dlib\math\interpolation.d" />
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<Compile Include="deps\dlib\dlib\math\linsolve.d" />
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<Compile Include="deps\dlib\dlib\math\matrix.d" />
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<Compile Include="deps\dlib\dlib\math\utils.d" />
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<Compile Include="deps\dlib\dlib\math\vector.d" />
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<Compile Include="deps\gl3n\gl3n\aabb.d" />
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<Compile Include="deps\gl3n\gl3n\frustum.d" />
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<Compile Include="deps\gl3n\gl3n\interpolate.d" />
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<Compile Include="deps\gl3n\gl3n\linalg.d" />
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<Compile Include="deps\gl3n\gl3n\math.d" />
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<Compile Include="deps\gl3n\gl3n\plane.d" />
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<Compile Include="deps\gl3n\gl3n\util.d" />
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<Compile Include="deps\dlib\dlib\core\stream.d" />
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<Compile Include="deps\dlib\dlib\filesystem\windows\common.d" />
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<Compile Include="deps\dlib\dlib\filesystem\windows\directory.d" />
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<Compile Include="deps\dlib\dlib\filesystem\windows\file.d" />
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<Compile Include="deps\dlib\dlib\coding\huffman.d" />
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<Compile Include="deps\dlib\dlib\coding\zlib.d" />
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<Compile Include="deps\dlib\dlib\container\array.d" />
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<Compile Include="3rdparty\fontconfig\functions.d" />
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<Compile Include="3rdparty\fontconfig\package.d" />
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<Compile Include="3rdparty\fontconfig\types.d" />
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<Compile Include="src\dlangui\platforms\common\startup.d" />
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</ItemGroup>
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<ItemGroup>
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<None Include="3rdparty\win32\makefile" />
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@ -738,6 +738,7 @@
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<File path="src\dlangui\core\collections.d" />
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<File path="src\dlangui\core\config.d" />
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<File path="src\dlangui\core\css.d" />
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<File path="src\dlangui\core\cssparser.d" />
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<File path="src\dlangui\core\dom.d" />
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<File path="src\dlangui\core\editable.d" />
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<File path="src\dlangui\core\events.d" />
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@ -367,7 +367,7 @@ public:
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case attrhas: // E[foo~="value"]
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// one of space separated values
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string val = node.attrValue(Ns.any, _attrid);
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int p = val.indexOf(_value);
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int p = cast(int)val.indexOf(_value);
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if (p < 0)
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return false;
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if ( (p > 0 && val[p - 1] != ' ')
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@ -398,6 +398,8 @@ public:
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}
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}
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import dlangui.core.cssparser;
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/** simple CSS selector
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Currently supports only element name and universal selector.
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@ -413,6 +415,20 @@ private:
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int _specificity;
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CssSelector _next;
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CssSelectorRule _rules;
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public:
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/// get element tag id (0 - any tag)
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@property elem_id id() { return _id; }
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/// set element tag id (0 - any tag)
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@property void id(elem_id id) { _id = id; }
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this() { }
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~this() {
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//if (_next)
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// destroy(_next);
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//if (_rules)
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// destroy(_rules);
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}
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void insertRuleStart(CssSelectorRule rule) {
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rule.next = _rules;
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_rules = rule;
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@ -425,83 +441,6 @@ private:
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_rules.next = rule;
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}
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}
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public:
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this(CssSelector v) {
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_id = v._id;
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_decl = v._decl;
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_specificity = v._specificity;
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}
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this() { }
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~this() {
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//if (_next)
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// destroy(_next);
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//if (_rules)
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// destroy(_rules);
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}
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bool parse(ref string str, Document doc) { //, lxmlDocBase * doc
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if (str.empty)
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return false;
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for (;;)
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{
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if (!skipSpaces(str))
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return false;
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char ch = str[0];
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string ident = parseIdent(str);
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if (ch == '*') { // universal selector
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str = str[1 .. $];
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skipSpaces(str);
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_id = 0;
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} else if (ch == '.') { // classname follows
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_id = 0;
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// will be parsed as attribute
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} else if (!ident.empty) {
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// ident
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_id = doc.tagId(ident);
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} else {
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return false;
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}
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if (ch == ',' || ch == '{' )
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return true;
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// one or more attribute rules
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bool attr_rule = false;
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while (ch == '[' || ch == '.' || ch == '#') {
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CssSelectorRule rule = parseAttr(str, doc);
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if (!rule)
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return false;
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insertRuleStart(rule); //insertRuleAfterStart
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skipSpaces(str);
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attr_rule = true;
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//continue;
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}
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// element relation
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if (ch == '>') {
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str = str[1 .. $];
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CssSelectorRule rule = new CssSelectorRule(CssSelectorRuleType.parent);
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rule.id = _id;
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insertRuleStart(rule);
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_id=0;
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continue;
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} else if (ch == '+') {
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str = str[1 .. $];
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CssSelectorRule rule = new CssSelectorRule(CssSelectorRuleType.predecessor);
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rule.id = _id;
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insertRuleStart(rule);
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_id=0;
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continue;
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} else if (ch.isAlpha) {
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CssSelectorRule rule = new CssSelectorRule(CssSelectorRuleType.ancessor);
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rule.id = _id;
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insertRuleStart(rule);
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_id=0;
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continue;
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}
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if ( !attr_rule )
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return false;
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else if (str.length > 0 && (str[0] == ',' || str[0] == '{'))
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return true;
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}
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}
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@property uint tagId() { return _id; }
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bool check(const Node node) const {
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@ -591,14 +530,18 @@ struct CssDeclItem {
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class CssDeclaration {
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private CssDeclItem[] _list;
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private void addLengthDecl(CssDeclType type, CssValue len) {
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@property bool empty() {
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return _list.length == 0;
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}
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void addLengthDecl(CssDeclType type, CssValue len) {
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CssDeclItem item;
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item.type = type;
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item.length = len;
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_list ~= item;
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}
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private void addDecl(CssDeclType type, int value, string str) {
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void addDecl(CssDeclType type, int value, string str) {
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CssDeclItem item;
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item.type = type;
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item.value = value;
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@ -610,679 +553,10 @@ class CssDeclaration {
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foreach(item; _list)
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item.apply(style);
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}
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bool parse(ref string src, bool mustBeInBrackets = true) {
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if (!skipSpaces(src))
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return false;
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if (mustBeInBrackets && !skipChar(src, '{'))
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return false; // decl must start with {
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for (;;) {
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CssDeclType propId = parseCssDeclType(src);
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if (src.empty)
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break;
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if (propId != CssDeclType.unknown) {
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int n = -1;
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string s = null;
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switch(propId) with(CssDeclType) {
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case display: n = parseEnumItem!CssDisplay(src, -1); break;
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case white_space: n = parseEnumItem!CssWhiteSpace(src, -1); break;
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case text_align: n = parseEnumItem!CssTextAlign(src, -1); break;
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case text_align_last: n = parseEnumItem!CssTextAlign(src, -1); break;
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case text_decoration: n = parseEnumItem!CssTextDecoration(src, -1); break;
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case hyphenate:
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case _webkit_hyphens: // -webkit-hyphens
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case adobe_hyphenate: // adobe-hyphenate
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case adobe_text_layout: // adobe-text-layout
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n = parseEnumItem!CssHyphenate(src, -1);
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break; // hyphenate
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case color:
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case background_color:
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CssValue v;
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if (parseColor(src, v)) {
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addLengthDecl(propId, v);
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}
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break;
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case vertical_align: n = parseEnumItem!CssVerticalAlign(src, -1); break;
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case font_family: // id families like serif, sans-serif
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string[] list;
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string[] faceList;
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if (splitPropertyValueList(src, list)) {
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foreach(item; list) {
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string name = item;
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int family = parseEnumItem!CssFontFamily(name, -1);
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if (family != -1) {
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// family name, e.g. sans-serif
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n = family;
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} else {
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faceList ~= item;
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}
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}
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}
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s = joinPropertyValueList(faceList);
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break;
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case font_style: n = parseEnumItem!CssFontStyle(src, -1); break;
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case font_weight:
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n = parseEnumItem!CssFontWeight(src, -1);
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if (n < 0) {
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CssValue value;
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if (parseLength(src, value)) {
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if (value.type == CssValueType.px) {
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if (value.value < 150)
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n = CssFontWeight.fw_100;
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else if (value.value < 250)
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n = CssFontWeight.fw_200;
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else if (value.value < 350)
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n = CssFontWeight.fw_300;
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else if (value.value < 450)
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n = CssFontWeight.fw_400;
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else if (value.value < 550)
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n = CssFontWeight.fw_500;
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else if (value.value < 650)
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n = CssFontWeight.fw_600;
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else if (value.value < 750)
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n = CssFontWeight.fw_700;
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else if (value.value < 850)
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n = CssFontWeight.fw_800;
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else
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n = CssFontWeight.fw_900;
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}
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}
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}
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//n = parseEnumItem!Css(src, -1);
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break;
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case text_indent:
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{
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// read length
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CssValue len;
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bool negative = false;
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if (src[0] == '-') {
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src = src[1 .. $];
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negative = true;
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}
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if (parseLength(src, len)) {
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// read optional "hanging" flag
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skipSpaces(src);
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string attr = parseIdent(src);
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if (attr == "hanging")
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len.value = -len.value;
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addLengthDecl(propId, len);
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}
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}
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break;
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case line_height:
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case letter_spacing:
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case font_size:
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case width:
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case height:
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case margin_left:
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case margin_right:
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case margin_top:
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case margin_bottom:
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case padding_left:
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case padding_right:
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case padding_top:
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case padding_bottom:
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// parse length
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CssValue value;
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if (parseLength(src, value))
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addLengthDecl(propId, value);
|
||||
break;
|
||||
case margin:
|
||||
case padding:
|
||||
//n = parseEnumItem!Css(src, -1);
|
||||
CssValue[4] len;
|
||||
int i;
|
||||
for (i = 0; i < 4; ++i)
|
||||
if (!parseLength(src, len[i]))
|
||||
break;
|
||||
if (i) {
|
||||
switch (i) {
|
||||
case 1:
|
||||
len[1] = len[0];
|
||||
goto case; /* fall through */
|
||||
case 2:
|
||||
len[2] = len[0];
|
||||
goto case; /* fall through */
|
||||
case 3:
|
||||
len[3] = len[1];
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
if (propId == margin) {
|
||||
addLengthDecl(margin_left, len[0]);
|
||||
addLengthDecl(margin_top, len[1]);
|
||||
addLengthDecl(margin_right, len[2]);
|
||||
addLengthDecl(margin_bottom, len[3]);
|
||||
} else {
|
||||
addLengthDecl(padding_left, len[0]);
|
||||
addLengthDecl(padding_top, len[1]);
|
||||
addLengthDecl(padding_right, len[2]);
|
||||
addLengthDecl(padding_bottom, len[3]);
|
||||
}
|
||||
}
|
||||
break;
|
||||
case page_break_before:
|
||||
case page_break_inside:
|
||||
case page_break_after:
|
||||
n = parseEnumItem!CssPageBreak(src, -1);
|
||||
break;
|
||||
case list_style:
|
||||
//n = parseEnumItem!Css(src, -1);
|
||||
break;
|
||||
case list_style_type: n = parseEnumItem!CssListStyleType(src, -1); break;
|
||||
case list_style_position: n = parseEnumItem!CssListStylePosition(src, -1); break;
|
||||
case list_style_image:
|
||||
//n = parseEnumItem!CssListStyleImage(src, -1);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
if (n >= 0 || !s.empty)
|
||||
addDecl(propId, n, s);
|
||||
}
|
||||
if (!nextProperty(src))
|
||||
break;
|
||||
}
|
||||
if (mustBeInBrackets && !skipChar(src, '}'))
|
||||
return false;
|
||||
return _list.length > 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/// skip spaces, move to new location, return true if there are some characters left in source line
|
||||
private bool skipSpaces(ref string src) {
|
||||
for(;;) {
|
||||
if (src.empty) {
|
||||
src = null;
|
||||
return false;
|
||||
}
|
||||
char ch = src[0];
|
||||
if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n') {
|
||||
src = src[1 .. $];
|
||||
} else {
|
||||
return !src.empty;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private bool isIdentChar(char ch) {
|
||||
return (ch >= 'A' && ch <='Z') || (ch >= 'a' && ch <='z') || (ch == '-') || (ch == '_');
|
||||
}
|
||||
|
||||
/// parse css identifier
|
||||
private string parseIdent(ref string src) {
|
||||
int pos = 0;
|
||||
for ( ; pos < src.length; pos++) {
|
||||
if (!src[pos].isIdentChar)
|
||||
break;
|
||||
}
|
||||
if (!pos)
|
||||
return null;
|
||||
string res = src[0 .. pos];
|
||||
if (pos < src.length)
|
||||
src = src[pos .. $];
|
||||
else
|
||||
src = null;
|
||||
skipSpaces(src);
|
||||
return res;
|
||||
}
|
||||
|
||||
private bool skipChar(ref string src, char ch) {
|
||||
skipSpaces(src);
|
||||
if (src.length > 0 && src[0] == ch) {
|
||||
src = src[1 .. $];
|
||||
skipSpaces(src);
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
private string replaceChar(string s, char from, char to) {
|
||||
foreach(ch; s) {
|
||||
if (ch == from) {
|
||||
char[] buf;
|
||||
foreach(c; s)
|
||||
if (c == from)
|
||||
buf ~= to;
|
||||
else
|
||||
buf ~= c;
|
||||
return buf.dup;
|
||||
}
|
||||
}
|
||||
return s;
|
||||
}
|
||||
|
||||
/// remove trailing _ from string, e.g. "body_" -> "body"
|
||||
private string removeTrailingUnderscore(string s) {
|
||||
if (s.endsWith("_"))
|
||||
return s[0..$-1];
|
||||
return s;
|
||||
}
|
||||
|
||||
private int parseEnumItem(E)(ref string src, int defValue = -1) if (is(E == enum)) {
|
||||
string ident = replaceChar(parseIdent(src), '-', '_');
|
||||
foreach(member; EnumMembers!E) {
|
||||
if (ident == removeTrailingUnderscore(member.to!string)) {
|
||||
return member.to!int;
|
||||
}
|
||||
}
|
||||
return defValue;
|
||||
}
|
||||
|
||||
private CssDeclType parseCssDeclType(ref string src) {
|
||||
int n = parseEnumItem!CssDeclType(src, -1);
|
||||
if (n < 0)
|
||||
return CssDeclType.unknown;
|
||||
if (!skipChar(src, ':')) // no : after identifier
|
||||
return CssDeclType.unknown;
|
||||
return cast(CssDeclType)n;
|
||||
}
|
||||
|
||||
private bool nextProperty(ref string str) {
|
||||
int pos = 0;
|
||||
for (; pos < str.length; pos++) {
|
||||
char ch = str[pos];
|
||||
if (ch == '}')
|
||||
break;
|
||||
if (ch == ';') {
|
||||
pos++;
|
||||
break;
|
||||
}
|
||||
}
|
||||
str = pos < str.length ? str[pos .. $] : null;
|
||||
skipSpaces(str);
|
||||
return !str.empty && str[0] != '}';
|
||||
}
|
||||
|
||||
|
||||
private int hexDigit( char c )
|
||||
{
|
||||
if ( c >= '0' && c <= '9' )
|
||||
return c-'0';
|
||||
if ( c >= 'A' && c <= 'F' )
|
||||
return c - 'A' + 10;
|
||||
if ( c >= 'a' && c <= 'f' )
|
||||
return c - 'a' + 10;
|
||||
return -1;
|
||||
}
|
||||
|
||||
private int parseStandardColor(string ident) {
|
||||
switch(ident) {
|
||||
case "black": return 0x000000;
|
||||
case "green": return 0x008000;
|
||||
case "silver": return 0xC0C0C0;
|
||||
case "lime": return 0x00FF00;
|
||||
case "gray": return 0x808080;
|
||||
case "olive": return 0x808000;
|
||||
case "white": return 0xFFFFFF;
|
||||
case "yellow": return 0xFFFF00;
|
||||
case "maroon": return 0x800000;
|
||||
case "navy": return 0x000080;
|
||||
case "red": return 0xFF0000;
|
||||
case "blue": return 0x0000FF;
|
||||
case "purple": return 0x800080;
|
||||
case "teal": return 0x008080;
|
||||
case "fuchsia": return 0xFF00FF;
|
||||
case "aqua": return 0x00FFFF;
|
||||
default: return -1;
|
||||
}
|
||||
}
|
||||
|
||||
private bool parseColor(ref string src, ref CssValue value)
|
||||
{
|
||||
value.type = CssValueType.unspecified;
|
||||
value.value = 0;
|
||||
skipSpaces(src);
|
||||
if (src.empty)
|
||||
return false;
|
||||
string ident = parseIdent(src);
|
||||
if (!ident.empty) {
|
||||
switch(ident) {
|
||||
case "inherited":
|
||||
value.type = CssValueType.inherited;
|
||||
return true;
|
||||
case "none":
|
||||
return true;
|
||||
default:
|
||||
int v = parseStandardColor(ident);
|
||||
if (v >= 0) {
|
||||
value.value = v;
|
||||
value.type = CssValueType.color;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
}
|
||||
char ch = src[0];
|
||||
if (ch == '#') {
|
||||
// #rgb or #rrggbb colors
|
||||
src = src[1 .. $];
|
||||
int nDigits = 0;
|
||||
for ( ; nDigits < src.length && hexDigit(src[nDigits])>=0; nDigits++ ) {
|
||||
}
|
||||
if ( nDigits==3 ) {
|
||||
int r = hexDigit( src[0] );
|
||||
int g = hexDigit( src[1] );
|
||||
int b = hexDigit( src[2] );
|
||||
value.type = CssValueType.color;
|
||||
value.value = (((r + r*16) * 256) | (g + g*16)) * 256 | (b + b*16);
|
||||
src = src[3..$];
|
||||
return true;
|
||||
} else if ( nDigits==6 ) {
|
||||
int r = hexDigit( src[0] ) * 16;
|
||||
r += hexDigit( src[1] );
|
||||
int g = hexDigit( src[2] ) * 16;
|
||||
g += hexDigit( src[3] );
|
||||
int b = hexDigit( src[4] ) * 16;
|
||||
b += hexDigit( src[5] );
|
||||
value.type = CssValueType.color;
|
||||
value.value = ((r * 256) | g) * 256 | b;
|
||||
src = src[6..$];
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
private bool parseLength(ref string src, ref CssValue value)
|
||||
{
|
||||
value.type = CssValueType.unspecified;
|
||||
value.value = 0;
|
||||
skipSpaces(src);
|
||||
string ident = parseIdent(src);
|
||||
if (!ident.empty) {
|
||||
switch(ident) {
|
||||
case "inherited":
|
||||
value.type = CssValueType.inherited;
|
||||
return true;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
if (src.empty)
|
||||
return false;
|
||||
int n = 0;
|
||||
char ch = src[0];
|
||||
if (ch != '.') {
|
||||
if (ch < '0' || ch > '9') {
|
||||
return false; // not a number
|
||||
}
|
||||
while (ch >= '0' && ch <= '9') {
|
||||
n = n*10 + (ch - '0');
|
||||
src = src[1 .. $];
|
||||
if (src.empty)
|
||||
break;
|
||||
ch = src[0];
|
||||
}
|
||||
}
|
||||
int frac = 0;
|
||||
int frac_div = 1;
|
||||
if (ch == '.') {
|
||||
src = src[1 .. $];
|
||||
if (!src.empty) {
|
||||
ch = src[0];
|
||||
while (ch >= '0' && ch <= '9') {
|
||||
frac = frac*10 + (ch - '0');
|
||||
frac_div *= 10;
|
||||
src = src[1 .. $];
|
||||
if (src.empty)
|
||||
break;
|
||||
ch = src[0];
|
||||
}
|
||||
}
|
||||
}
|
||||
if (ch == '%') {
|
||||
value.type = CssValueType.percent;
|
||||
src = src[1 .. $];
|
||||
} else {
|
||||
ident = parseIdent(src);
|
||||
if (!ident.empty) {
|
||||
switch(ident) {
|
||||
case "em": value.type = CssValueType.em; break;
|
||||
case "pt": value.type = CssValueType.pt; break;
|
||||
case "ex": value.type = CssValueType.ex; break;
|
||||
case "px": value.type = CssValueType.px; break;
|
||||
case "in": value.type = CssValueType.in_; break;
|
||||
case "cm": value.type = CssValueType.cm; break;
|
||||
case "mm": value.type = CssValueType.mm; break;
|
||||
case "pc": value.type = CssValueType.pc; break;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
} else {
|
||||
value.type = CssValueType.px;
|
||||
}
|
||||
}
|
||||
if ( value.type == CssValueType.px || value.type == CssValueType.percent )
|
||||
value.value = n; // normal
|
||||
else
|
||||
value.value = n * 256 + 256 * frac / frac_div; // *256
|
||||
return true;
|
||||
}
|
||||
|
||||
private void appendItem(ref string[] list, ref char[] item) {
|
||||
if (!item.empty) {
|
||||
list ~= item.dup;
|
||||
item.length = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/// splits string like "Arial", Times New Roman, Courier; into list, stops on ; and }
|
||||
/// returns true if at least one item added to list; moves str to new position
|
||||
bool splitPropertyValueList(ref string str, ref string[] list)
|
||||
{
|
||||
int i=0;
|
||||
char quote_char = 0;
|
||||
char[] name;
|
||||
bool last_space = false;
|
||||
for (i=0; i < str.length; i++) {
|
||||
char ch = str[i];
|
||||
switch(ch) {
|
||||
case '\'':
|
||||
case '\"':
|
||||
if (quote_char == 0) {
|
||||
if (!name.empty)
|
||||
appendItem(list, name);
|
||||
quote_char = ch;
|
||||
} else if (quote_char == ch) {
|
||||
if (!name.empty)
|
||||
appendItem(list, name);
|
||||
quote_char = 0;
|
||||
} else {
|
||||
// append char
|
||||
name ~= ch;
|
||||
}
|
||||
last_space = false;
|
||||
break;
|
||||
case ',':
|
||||
{
|
||||
if (quote_char==0) {
|
||||
if (!name.empty)
|
||||
appendItem(list, name);
|
||||
} else {
|
||||
// inside quotation: append char
|
||||
name ~= ch;
|
||||
}
|
||||
last_space = false;
|
||||
}
|
||||
break;
|
||||
case '\t':
|
||||
case ' ':
|
||||
{
|
||||
if (quote_char != 0)
|
||||
name ~= ch;
|
||||
last_space = true;
|
||||
}
|
||||
break;
|
||||
case ';':
|
||||
case '}':
|
||||
if (quote_char==0) {
|
||||
if (!name.empty)
|
||||
appendItem(list, name);
|
||||
str = i < str.length ? str[i .. $] : null;
|
||||
return list.length > 0;
|
||||
} else {
|
||||
// inside quotation: append char
|
||||
name ~= ch;
|
||||
last_space = false;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
if (last_space && !name.empty && quote_char == 0)
|
||||
name ~= ' ';
|
||||
name ~= ch;
|
||||
last_space = false;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (!name.empty)
|
||||
appendItem(list, name);
|
||||
str = i < str.length ? str[i .. $] : null;
|
||||
return list.length > 0;
|
||||
}
|
||||
|
||||
unittest {
|
||||
string src = "Arial, 'Times New Roman', \"Arial Black\", sans-serif; next-property: }";
|
||||
string[] list;
|
||||
assert(splitPropertyValueList(src, list));
|
||||
assert(list.length == 4);
|
||||
assert(list[0] == "Arial");
|
||||
assert(list[1] == "Times New Roman");
|
||||
assert(list[2] == "Arial Black");
|
||||
assert(list[3] == "sans-serif");
|
||||
}
|
||||
|
||||
/// joins list of items into comma separated string, each item in quotation marks
|
||||
string joinPropertyValueList(string[] list) {
|
||||
if (list.empty)
|
||||
return null;
|
||||
char[] res;
|
||||
|
||||
for (int i = 0; i < list.length; i++) {
|
||||
if (i > 0)
|
||||
res ~= ", ";
|
||||
res ~= "\"";
|
||||
res ~= list[i];
|
||||
res ~= "\"";
|
||||
}
|
||||
|
||||
return res.dup;
|
||||
}
|
||||
|
||||
unittest {
|
||||
assert(joinPropertyValueList(["item1", "item 2"]) == "\"item1\", \"item 2\"");
|
||||
}
|
||||
|
||||
|
||||
private bool parseAttrValue(ref string str, ref string attrvalue)
|
||||
{
|
||||
char[] buf;
|
||||
int pos = 0;
|
||||
if (!skipSpaces(str))
|
||||
return false;
|
||||
char ch = str[0];
|
||||
if (ch == '\"') {
|
||||
str = str[1 .. $];
|
||||
for ( ; pos < str.length && str[pos] != '\"'; pos++) {
|
||||
if (pos >= 1000)
|
||||
return false;
|
||||
}
|
||||
if (pos >= str.length || str[pos] != '\"')
|
||||
return false;
|
||||
buf ~= str[0 .. pos];
|
||||
str = str[pos + 1 .. $];
|
||||
if (!skipSpaces(str))
|
||||
return false;
|
||||
if (str[0] != ']')
|
||||
return false;
|
||||
str = str[1 .. $];
|
||||
attrvalue = buf.dup;
|
||||
return true;
|
||||
} else {
|
||||
for ( ; pos < str.length && str[pos] != ' ' && str[pos] != '\t' && str[pos] != ']'; pos++) {
|
||||
if (pos >= 1000)
|
||||
return false;
|
||||
}
|
||||
if (pos >= str.length || str[pos] != ']')
|
||||
return false;
|
||||
buf ~= str[0 .. pos];
|
||||
str = str[pos + 1 .. $];
|
||||
attrvalue = buf.dup;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
private CssSelectorRule parseAttr(ref string str, Document doc)
|
||||
{
|
||||
CssSelectorRuleType st = CssSelectorRuleType.universal;
|
||||
char ch = str[0];
|
||||
if (ch == '.') {
|
||||
// E.class
|
||||
str = str[1 .. $];
|
||||
skipSpaces(str);
|
||||
string attrvalue = parseIdent(str);
|
||||
if (attrvalue.empty)
|
||||
return null;
|
||||
CssSelectorRule rule = new CssSelectorRule(CssSelectorRuleType.class_);
|
||||
rule.setAttr(Attr.class_, attrvalue.toLower);
|
||||
return rule;
|
||||
} else if (ch == '#') {
|
||||
// E#id
|
||||
str = str[1 .. $];
|
||||
skipSpaces(str);
|
||||
string attrvalue = parseIdent(str);
|
||||
if (attrvalue.empty)
|
||||
return null;
|
||||
CssSelectorRule rule = new CssSelectorRule(CssSelectorRuleType.id);
|
||||
rule.setAttr(Attr.id, attrvalue.toLower);
|
||||
return rule;
|
||||
} else if (ch != '[')
|
||||
return null;
|
||||
// [.....] rule
|
||||
str = str[1 .. $]; // skip [
|
||||
skipSpaces(str);
|
||||
string attrname = parseIdent(str);
|
||||
if (attrname.empty)
|
||||
return null;
|
||||
if (!skipSpaces(str))
|
||||
return null;
|
||||
string attrvalue = null;
|
||||
ch = str[0];
|
||||
if (ch == ']') {
|
||||
// empty []
|
||||
st = CssSelectorRuleType.attrset;
|
||||
str = str[1 .. $]; // skip ]
|
||||
} else if (ch == '=') {
|
||||
str = str[1 .. $]; // skip =
|
||||
if (!parseAttrValue(str, attrvalue))
|
||||
return null;
|
||||
st = CssSelectorRuleType.attreq;
|
||||
} else if (ch == '~' && str.length > 1 && str[1] == '=') {
|
||||
str = str[2 .. $]; // skip ~=
|
||||
if (!parseAttrValue(str, attrvalue))
|
||||
return null;
|
||||
st = CssSelectorRuleType.attrhas;
|
||||
} else if (ch == '|' && str.length > 1 && str[1] == '=') {
|
||||
str = str[2 .. $]; // skip |=
|
||||
if (!parseAttrValue(str, attrvalue))
|
||||
return null;
|
||||
st = CssSelectorRuleType.attrstarts;
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
CssSelectorRule rule = new CssSelectorRule(st);
|
||||
attr_id id = doc.attrId(attrname);
|
||||
rule.setAttr(id, attrvalue);
|
||||
return rule;
|
||||
}
|
||||
|
||||
|
||||
unittest {
|
||||
CssStyle style = new CssStyle();
|
||||
CssDeclaration decl = new CssDeclaration();
|
||||
CssWhiteSpace whiteSpace = CssWhiteSpace.inherit;
|
||||
CssTextAlign textAlign = CssTextAlign.inherit;
|
||||
CssTextAlign textAlignLast = CssTextAlign.inherit;
|
||||
|
|
@ -1291,8 +565,9 @@ unittest {
|
|||
string src = "{ display: inline; text-decoration: underline; white-space: pre; text-align: right; text-align-last: left; "
|
||||
"hyphenate: auto; width: 70%; height: 1.5pt; margin-left: 2.0em; "
|
||||
"font-family: Arial, 'Times New Roman', sans-serif; font-size: 18pt; line-height: 120%; letter-spacing: 2px; font-weight: 300; "
|
||||
" }t";
|
||||
assert(decl.parse(src, true));
|
||||
" }tail";
|
||||
CssDeclaration decl = parseCssDeclaration(src, true);
|
||||
assert(decl !is null);
|
||||
assert(!src.empty && src[0] == 't');
|
||||
assert(style.display == CssDisplay.block);
|
||||
assert(style.textDecoration == CssTextDecoration.inherit);
|
||||
|
|
|
|||
|
|
@ -0,0 +1,762 @@
|
|||
module dlangui.core.cssparser;
|
||||
|
||||
import std.traits;
|
||||
import std.conv : to;
|
||||
import std.string;
|
||||
import std.array : empty;
|
||||
import std.algorithm : equal;
|
||||
import std.ascii : isAlpha;
|
||||
|
||||
import dlangui.core.dom;
|
||||
import dlangui.core.css;
|
||||
|
||||
/// skip spaces, move to new location, return true if there are some characters left in source line
|
||||
private bool skipSpaces(ref string src) {
|
||||
for(;;) {
|
||||
if (src.empty) {
|
||||
src = null;
|
||||
return false;
|
||||
}
|
||||
char ch = src[0];
|
||||
if (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n') {
|
||||
src = src[1 .. $];
|
||||
} else {
|
||||
return !src.empty;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private bool isIdentChar(char ch) {
|
||||
return (ch >= 'A' && ch <='Z') || (ch >= 'a' && ch <='z') || (ch == '-') || (ch == '_');
|
||||
}
|
||||
|
||||
/// parse css identifier
|
||||
private string parseIdent(ref string src) {
|
||||
int pos = 0;
|
||||
for ( ; pos < src.length; pos++) {
|
||||
if (!src[pos].isIdentChar)
|
||||
break;
|
||||
}
|
||||
if (!pos)
|
||||
return null;
|
||||
string res = src[0 .. pos];
|
||||
if (pos < src.length)
|
||||
src = src[pos .. $];
|
||||
else
|
||||
src = null;
|
||||
skipSpaces(src);
|
||||
return res;
|
||||
}
|
||||
|
||||
private bool skipChar(ref string src, char ch) {
|
||||
skipSpaces(src);
|
||||
if (src.length > 0 && src[0] == ch) {
|
||||
src = src[1 .. $];
|
||||
skipSpaces(src);
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
private string replaceChar(string s, char from, char to) {
|
||||
foreach(ch; s) {
|
||||
if (ch == from) {
|
||||
char[] buf;
|
||||
foreach(c; s)
|
||||
if (c == from)
|
||||
buf ~= to;
|
||||
else
|
||||
buf ~= c;
|
||||
return buf.dup;
|
||||
}
|
||||
}
|
||||
return s;
|
||||
}
|
||||
|
||||
/// remove trailing _ from string, e.g. "body_" -> "body"
|
||||
private string removeTrailingUnderscore(string s) {
|
||||
if (s.endsWith("_"))
|
||||
return s[0..$-1];
|
||||
return s;
|
||||
}
|
||||
|
||||
private int parseEnumItem(E)(ref string src, int defValue = -1) if (is(E == enum)) {
|
||||
string ident = replaceChar(parseIdent(src), '-', '_');
|
||||
foreach(member; EnumMembers!E) {
|
||||
if (ident == removeTrailingUnderscore(member.to!string)) {
|
||||
return member.to!int;
|
||||
}
|
||||
}
|
||||
return defValue;
|
||||
}
|
||||
|
||||
private CssDeclType parseCssDeclType(ref string src) {
|
||||
int n = parseEnumItem!CssDeclType(src, -1);
|
||||
if (n < 0)
|
||||
return CssDeclType.unknown;
|
||||
if (!skipChar(src, ':')) // no : after identifier
|
||||
return CssDeclType.unknown;
|
||||
return cast(CssDeclType)n;
|
||||
}
|
||||
|
||||
private bool nextProperty(ref string str) {
|
||||
int pos = 0;
|
||||
for (; pos < str.length; pos++) {
|
||||
char ch = str[pos];
|
||||
if (ch == '}')
|
||||
break;
|
||||
if (ch == ';') {
|
||||
pos++;
|
||||
break;
|
||||
}
|
||||
}
|
||||
str = pos < str.length ? str[pos .. $] : null;
|
||||
skipSpaces(str);
|
||||
return !str.empty && str[0] != '}';
|
||||
}
|
||||
|
||||
|
||||
private int hexDigit( char c )
|
||||
{
|
||||
if ( c >= '0' && c <= '9' )
|
||||
return c-'0';
|
||||
if ( c >= 'A' && c <= 'F' )
|
||||
return c - 'A' + 10;
|
||||
if ( c >= 'a' && c <= 'f' )
|
||||
return c - 'a' + 10;
|
||||
return -1;
|
||||
}
|
||||
|
||||
private int parseStandardColor(string ident) {
|
||||
switch(ident) {
|
||||
case "black": return 0x000000;
|
||||
case "green": return 0x008000;
|
||||
case "silver": return 0xC0C0C0;
|
||||
case "lime": return 0x00FF00;
|
||||
case "gray": return 0x808080;
|
||||
case "olive": return 0x808000;
|
||||
case "white": return 0xFFFFFF;
|
||||
case "yellow": return 0xFFFF00;
|
||||
case "maroon": return 0x800000;
|
||||
case "navy": return 0x000080;
|
||||
case "red": return 0xFF0000;
|
||||
case "blue": return 0x0000FF;
|
||||
case "purple": return 0x800080;
|
||||
case "teal": return 0x008080;
|
||||
case "fuchsia": return 0xFF00FF;
|
||||
case "aqua": return 0x00FFFF;
|
||||
default: return -1;
|
||||
}
|
||||
}
|
||||
|
||||
private bool parseColor(ref string src, ref CssValue value)
|
||||
{
|
||||
value.type = CssValueType.unspecified;
|
||||
value.value = 0;
|
||||
skipSpaces(src);
|
||||
if (src.empty)
|
||||
return false;
|
||||
string ident = parseIdent(src);
|
||||
if (!ident.empty) {
|
||||
switch(ident) {
|
||||
case "inherited":
|
||||
value.type = CssValueType.inherited;
|
||||
return true;
|
||||
case "none":
|
||||
return true;
|
||||
default:
|
||||
int v = parseStandardColor(ident);
|
||||
if (v >= 0) {
|
||||
value.value = v;
|
||||
value.type = CssValueType.color;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
}
|
||||
char ch = src[0];
|
||||
if (ch == '#') {
|
||||
// #rgb or #rrggbb colors
|
||||
src = src[1 .. $];
|
||||
int nDigits = 0;
|
||||
for ( ; nDigits < src.length && hexDigit(src[nDigits])>=0; nDigits++ ) {
|
||||
}
|
||||
if ( nDigits==3 ) {
|
||||
int r = hexDigit( src[0] );
|
||||
int g = hexDigit( src[1] );
|
||||
int b = hexDigit( src[2] );
|
||||
value.type = CssValueType.color;
|
||||
value.value = (((r + r*16) * 256) | (g + g*16)) * 256 | (b + b*16);
|
||||
src = src[3..$];
|
||||
return true;
|
||||
} else if ( nDigits==6 ) {
|
||||
int r = hexDigit( src[0] ) * 16;
|
||||
r += hexDigit( src[1] );
|
||||
int g = hexDigit( src[2] ) * 16;
|
||||
g += hexDigit( src[3] );
|
||||
int b = hexDigit( src[4] ) * 16;
|
||||
b += hexDigit( src[5] );
|
||||
value.type = CssValueType.color;
|
||||
value.value = ((r * 256) | g) * 256 | b;
|
||||
src = src[6..$];
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
private bool parseLength(ref string src, ref CssValue value)
|
||||
{
|
||||
value.type = CssValueType.unspecified;
|
||||
value.value = 0;
|
||||
skipSpaces(src);
|
||||
string ident = parseIdent(src);
|
||||
if (!ident.empty) {
|
||||
switch(ident) {
|
||||
case "inherited":
|
||||
value.type = CssValueType.inherited;
|
||||
return true;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
if (src.empty)
|
||||
return false;
|
||||
int n = 0;
|
||||
char ch = src[0];
|
||||
if (ch != '.') {
|
||||
if (ch < '0' || ch > '9') {
|
||||
return false; // not a number
|
||||
}
|
||||
while (ch >= '0' && ch <= '9') {
|
||||
n = n*10 + (ch - '0');
|
||||
src = src[1 .. $];
|
||||
if (src.empty)
|
||||
break;
|
||||
ch = src[0];
|
||||
}
|
||||
}
|
||||
int frac = 0;
|
||||
int frac_div = 1;
|
||||
if (ch == '.') {
|
||||
src = src[1 .. $];
|
||||
if (!src.empty) {
|
||||
ch = src[0];
|
||||
while (ch >= '0' && ch <= '9') {
|
||||
frac = frac*10 + (ch - '0');
|
||||
frac_div *= 10;
|
||||
src = src[1 .. $];
|
||||
if (src.empty)
|
||||
break;
|
||||
ch = src[0];
|
||||
}
|
||||
}
|
||||
}
|
||||
if (ch == '%') {
|
||||
value.type = CssValueType.percent;
|
||||
src = src[1 .. $];
|
||||
} else {
|
||||
ident = parseIdent(src);
|
||||
if (!ident.empty) {
|
||||
switch(ident) {
|
||||
case "em": value.type = CssValueType.em; break;
|
||||
case "pt": value.type = CssValueType.pt; break;
|
||||
case "ex": value.type = CssValueType.ex; break;
|
||||
case "px": value.type = CssValueType.px; break;
|
||||
case "in": value.type = CssValueType.in_; break;
|
||||
case "cm": value.type = CssValueType.cm; break;
|
||||
case "mm": value.type = CssValueType.mm; break;
|
||||
case "pc": value.type = CssValueType.pc; break;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
} else {
|
||||
value.type = CssValueType.px;
|
||||
}
|
||||
}
|
||||
if ( value.type == CssValueType.px || value.type == CssValueType.percent )
|
||||
value.value = n; // normal
|
||||
else
|
||||
value.value = n * 256 + 256 * frac / frac_div; // *256
|
||||
return true;
|
||||
}
|
||||
|
||||
private void appendItem(ref string[] list, ref char[] item) {
|
||||
if (!item.empty) {
|
||||
list ~= item.dup;
|
||||
item.length = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/// splits string like "Arial", Times New Roman, Courier; into list, stops on ; and }
|
||||
/// returns true if at least one item added to list; moves str to new position
|
||||
bool splitPropertyValueList(ref string str, ref string[] list)
|
||||
{
|
||||
int i=0;
|
||||
char quote_char = 0;
|
||||
char[] name;
|
||||
bool last_space = false;
|
||||
for (i=0; i < str.length; i++) {
|
||||
char ch = str[i];
|
||||
switch(ch) {
|
||||
case '\'':
|
||||
case '\"':
|
||||
if (quote_char == 0) {
|
||||
if (!name.empty)
|
||||
appendItem(list, name);
|
||||
quote_char = ch;
|
||||
} else if (quote_char == ch) {
|
||||
if (!name.empty)
|
||||
appendItem(list, name);
|
||||
quote_char = 0;
|
||||
} else {
|
||||
// append char
|
||||
name ~= ch;
|
||||
}
|
||||
last_space = false;
|
||||
break;
|
||||
case ',':
|
||||
{
|
||||
if (quote_char==0) {
|
||||
if (!name.empty)
|
||||
appendItem(list, name);
|
||||
} else {
|
||||
// inside quotation: append char
|
||||
name ~= ch;
|
||||
}
|
||||
last_space = false;
|
||||
}
|
||||
break;
|
||||
case '\t':
|
||||
case ' ':
|
||||
{
|
||||
if (quote_char != 0)
|
||||
name ~= ch;
|
||||
last_space = true;
|
||||
}
|
||||
break;
|
||||
case ';':
|
||||
case '}':
|
||||
if (quote_char==0) {
|
||||
if (!name.empty)
|
||||
appendItem(list, name);
|
||||
str = i < str.length ? str[i .. $] : null;
|
||||
return list.length > 0;
|
||||
} else {
|
||||
// inside quotation: append char
|
||||
name ~= ch;
|
||||
last_space = false;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
if (last_space && !name.empty && quote_char == 0)
|
||||
name ~= ' ';
|
||||
name ~= ch;
|
||||
last_space = false;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (!name.empty)
|
||||
appendItem(list, name);
|
||||
str = i < str.length ? str[i .. $] : null;
|
||||
return list.length > 0;
|
||||
}
|
||||
|
||||
unittest {
|
||||
string src = "Arial, 'Times New Roman', \"Arial Black\", sans-serif; next-property: }";
|
||||
string[] list;
|
||||
assert(splitPropertyValueList(src, list));
|
||||
assert(list.length == 4);
|
||||
assert(list[0] == "Arial");
|
||||
assert(list[1] == "Times New Roman");
|
||||
assert(list[2] == "Arial Black");
|
||||
assert(list[3] == "sans-serif");
|
||||
}
|
||||
|
||||
/// joins list of items into comma separated string, each item in quotation marks
|
||||
string joinPropertyValueList(string[] list) {
|
||||
if (list.empty)
|
||||
return null;
|
||||
char[] res;
|
||||
|
||||
for (int i = 0; i < list.length; i++) {
|
||||
if (i > 0)
|
||||
res ~= ", ";
|
||||
res ~= "\"";
|
||||
res ~= list[i];
|
||||
res ~= "\"";
|
||||
}
|
||||
|
||||
return res.dup;
|
||||
}
|
||||
|
||||
unittest {
|
||||
assert(joinPropertyValueList(["item1", "item 2"]) == "\"item1\", \"item 2\"");
|
||||
}
|
||||
|
||||
|
||||
private bool parseAttrValue(ref string str, ref string attrvalue)
|
||||
{
|
||||
char[] buf;
|
||||
int pos = 0;
|
||||
if (!skipSpaces(str))
|
||||
return false;
|
||||
char ch = str[0];
|
||||
if (ch == '\"') {
|
||||
str = str[1 .. $];
|
||||
for ( ; pos < str.length && str[pos] != '\"'; pos++) {
|
||||
if (pos >= 1000)
|
||||
return false;
|
||||
}
|
||||
if (pos >= str.length || str[pos] != '\"')
|
||||
return false;
|
||||
buf ~= str[0 .. pos];
|
||||
str = str[pos + 1 .. $];
|
||||
if (!skipSpaces(str))
|
||||
return false;
|
||||
if (str[0] != ']')
|
||||
return false;
|
||||
str = str[1 .. $];
|
||||
attrvalue = buf.dup;
|
||||
return true;
|
||||
} else {
|
||||
for ( ; pos < str.length && str[pos] != ' ' && str[pos] != '\t' && str[pos] != ']'; pos++) {
|
||||
if (pos >= 1000)
|
||||
return false;
|
||||
}
|
||||
if (pos >= str.length || str[pos] != ']')
|
||||
return false;
|
||||
buf ~= str[0 .. pos];
|
||||
str = str[pos + 1 .. $];
|
||||
attrvalue = buf.dup;
|
||||
return true;
|
||||
}
|
||||
}
|
||||
|
||||
private CssSelectorRule parseAttr(ref string str, Document doc)
|
||||
{
|
||||
CssSelectorRuleType st = CssSelectorRuleType.universal;
|
||||
char ch = str[0];
|
||||
if (ch == '.') {
|
||||
// E.class
|
||||
str = str[1 .. $];
|
||||
skipSpaces(str);
|
||||
string attrvalue = parseIdent(str);
|
||||
if (attrvalue.empty)
|
||||
return null;
|
||||
CssSelectorRule rule = new CssSelectorRule(CssSelectorRuleType.class_);
|
||||
rule.setAttr(Attr.class_, attrvalue.toLower);
|
||||
return rule;
|
||||
} else if (ch == '#') {
|
||||
// E#id
|
||||
str = str[1 .. $];
|
||||
skipSpaces(str);
|
||||
string attrvalue = parseIdent(str);
|
||||
if (attrvalue.empty)
|
||||
return null;
|
||||
CssSelectorRule rule = new CssSelectorRule(CssSelectorRuleType.id);
|
||||
rule.setAttr(Attr.id, attrvalue.toLower);
|
||||
return rule;
|
||||
} else if (ch != '[')
|
||||
return null;
|
||||
// [.....] rule
|
||||
str = str[1 .. $]; // skip [
|
||||
skipSpaces(str);
|
||||
string attrname = parseIdent(str);
|
||||
if (attrname.empty)
|
||||
return null;
|
||||
if (!skipSpaces(str))
|
||||
return null;
|
||||
string attrvalue = null;
|
||||
ch = str[0];
|
||||
if (ch == ']') {
|
||||
// empty []
|
||||
st = CssSelectorRuleType.attrset;
|
||||
str = str[1 .. $]; // skip ]
|
||||
} else if (ch == '=') {
|
||||
str = str[1 .. $]; // skip =
|
||||
if (!parseAttrValue(str, attrvalue))
|
||||
return null;
|
||||
st = CssSelectorRuleType.attreq;
|
||||
} else if (ch == '~' && str.length > 1 && str[1] == '=') {
|
||||
str = str[2 .. $]; // skip ~=
|
||||
if (!parseAttrValue(str, attrvalue))
|
||||
return null;
|
||||
st = CssSelectorRuleType.attrhas;
|
||||
} else if (ch == '|' && str.length > 1 && str[1] == '=') {
|
||||
str = str[2 .. $]; // skip |=
|
||||
if (!parseAttrValue(str, attrvalue))
|
||||
return null;
|
||||
st = CssSelectorRuleType.attrstarts;
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
CssSelectorRule rule = new CssSelectorRule(st);
|
||||
attr_id id = doc.attrId(attrname);
|
||||
rule.setAttr(id, attrvalue);
|
||||
return rule;
|
||||
}
|
||||
|
||||
CssDeclaration parseCssDeclaration(ref string src, bool mustBeInBrackets = true) {
|
||||
if (!skipSpaces(src))
|
||||
return null;
|
||||
if (mustBeInBrackets && !skipChar(src, '{'))
|
||||
return null; // decl must start with {
|
||||
CssDeclaration res = new CssDeclaration();
|
||||
for (;;) {
|
||||
CssDeclType propId = parseCssDeclType(src);
|
||||
if (src.empty)
|
||||
break;
|
||||
if (propId != CssDeclType.unknown) {
|
||||
int n = -1;
|
||||
string s = null;
|
||||
switch(propId) with(CssDeclType) {
|
||||
case display: n = parseEnumItem!CssDisplay(src, -1); break;
|
||||
case white_space: n = parseEnumItem!CssWhiteSpace(src, -1); break;
|
||||
case text_align: n = parseEnumItem!CssTextAlign(src, -1); break;
|
||||
case text_align_last: n = parseEnumItem!CssTextAlign(src, -1); break;
|
||||
case text_decoration: n = parseEnumItem!CssTextDecoration(src, -1); break;
|
||||
case hyphenate:
|
||||
case _webkit_hyphens: // -webkit-hyphens
|
||||
case adobe_hyphenate: // adobe-hyphenate
|
||||
case adobe_text_layout: // adobe-text-layout
|
||||
n = parseEnumItem!CssHyphenate(src, -1);
|
||||
break; // hyphenate
|
||||
case color:
|
||||
case background_color:
|
||||
CssValue v;
|
||||
if (parseColor(src, v)) {
|
||||
res.addLengthDecl(propId, v);
|
||||
}
|
||||
break;
|
||||
case vertical_align: n = parseEnumItem!CssVerticalAlign(src, -1); break;
|
||||
case font_family: // id families like serif, sans-serif
|
||||
string[] list;
|
||||
string[] faceList;
|
||||
if (splitPropertyValueList(src, list)) {
|
||||
foreach(item; list) {
|
||||
string name = item;
|
||||
int family = parseEnumItem!CssFontFamily(name, -1);
|
||||
if (family != -1) {
|
||||
// family name, e.g. sans-serif
|
||||
n = family;
|
||||
} else {
|
||||
faceList ~= item;
|
||||
}
|
||||
}
|
||||
}
|
||||
s = joinPropertyValueList(faceList);
|
||||
break;
|
||||
case font_style: n = parseEnumItem!CssFontStyle(src, -1); break;
|
||||
case font_weight:
|
||||
n = parseEnumItem!CssFontWeight(src, -1);
|
||||
if (n < 0) {
|
||||
CssValue value;
|
||||
if (parseLength(src, value)) {
|
||||
if (value.type == CssValueType.px) {
|
||||
if (value.value < 150)
|
||||
n = CssFontWeight.fw_100;
|
||||
else if (value.value < 250)
|
||||
n = CssFontWeight.fw_200;
|
||||
else if (value.value < 350)
|
||||
n = CssFontWeight.fw_300;
|
||||
else if (value.value < 450)
|
||||
n = CssFontWeight.fw_400;
|
||||
else if (value.value < 550)
|
||||
n = CssFontWeight.fw_500;
|
||||
else if (value.value < 650)
|
||||
n = CssFontWeight.fw_600;
|
||||
else if (value.value < 750)
|
||||
n = CssFontWeight.fw_700;
|
||||
else if (value.value < 850)
|
||||
n = CssFontWeight.fw_800;
|
||||
else
|
||||
n = CssFontWeight.fw_900;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//n = parseEnumItem!Css(src, -1);
|
||||
break;
|
||||
case text_indent:
|
||||
{
|
||||
// read length
|
||||
CssValue len;
|
||||
bool negative = false;
|
||||
if (src[0] == '-') {
|
||||
src = src[1 .. $];
|
||||
negative = true;
|
||||
}
|
||||
if (parseLength(src, len)) {
|
||||
// read optional "hanging" flag
|
||||
skipSpaces(src);
|
||||
string attr = parseIdent(src);
|
||||
if (attr == "hanging")
|
||||
len.value = -len.value;
|
||||
res.addLengthDecl(propId, len);
|
||||
}
|
||||
}
|
||||
break;
|
||||
case line_height:
|
||||
case letter_spacing:
|
||||
case font_size:
|
||||
case width:
|
||||
case height:
|
||||
case margin_left:
|
||||
case margin_right:
|
||||
case margin_top:
|
||||
case margin_bottom:
|
||||
case padding_left:
|
||||
case padding_right:
|
||||
case padding_top:
|
||||
case padding_bottom:
|
||||
// parse length
|
||||
CssValue value;
|
||||
if (parseLength(src, value))
|
||||
res.addLengthDecl(propId, value);
|
||||
break;
|
||||
case margin:
|
||||
case padding:
|
||||
//n = parseEnumItem!Css(src, -1);
|
||||
CssValue[4] len;
|
||||
int i;
|
||||
for (i = 0; i < 4; ++i)
|
||||
if (!parseLength(src, len[i]))
|
||||
break;
|
||||
if (i) {
|
||||
switch (i) {
|
||||
case 1:
|
||||
len[1] = len[0];
|
||||
goto case; /* fall through */
|
||||
case 2:
|
||||
len[2] = len[0];
|
||||
goto case; /* fall through */
|
||||
case 3:
|
||||
len[3] = len[1];
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
if (propId == margin) {
|
||||
res.addLengthDecl(margin_left, len[0]);
|
||||
res.addLengthDecl(margin_top, len[1]);
|
||||
res.addLengthDecl(margin_right, len[2]);
|
||||
res.addLengthDecl(margin_bottom, len[3]);
|
||||
} else {
|
||||
res.addLengthDecl(padding_left, len[0]);
|
||||
res.addLengthDecl(padding_top, len[1]);
|
||||
res.addLengthDecl(padding_right, len[2]);
|
||||
res.addLengthDecl(padding_bottom, len[3]);
|
||||
}
|
||||
}
|
||||
break;
|
||||
case page_break_before:
|
||||
case page_break_inside:
|
||||
case page_break_after:
|
||||
n = parseEnumItem!CssPageBreak(src, -1);
|
||||
break;
|
||||
case list_style:
|
||||
//n = parseEnumItem!Css(src, -1);
|
||||
break;
|
||||
case list_style_type: n = parseEnumItem!CssListStyleType(src, -1); break;
|
||||
case list_style_position: n = parseEnumItem!CssListStylePosition(src, -1); break;
|
||||
case list_style_image:
|
||||
//n = parseEnumItem!CssListStyleImage(src, -1);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
if (n >= 0 || !s.empty)
|
||||
res.addDecl(propId, n, s);
|
||||
}
|
||||
if (!nextProperty(src))
|
||||
break;
|
||||
}
|
||||
if (mustBeInBrackets && !skipChar(src, '}'))
|
||||
return null;
|
||||
if (res.empty)
|
||||
return null;
|
||||
return res;
|
||||
}
|
||||
|
||||
/// parse Css selector, return selector object if parsed ok
|
||||
CssSelector parseCssSelector(ref string str, Document doc) {
|
||||
if (str.empty)
|
||||
return null;
|
||||
CssSelector res = new CssSelector();
|
||||
for (;;) {
|
||||
if (!skipSpaces(str))
|
||||
return null;
|
||||
char ch = str[0];
|
||||
string ident = parseIdent(str);
|
||||
if (ch == '*') { // universal selector
|
||||
str = str[1 .. $];
|
||||
skipSpaces(str);
|
||||
res.id = 0;
|
||||
} else if (ch == '.') { // classname follows
|
||||
res.id = 0;
|
||||
// will be parsed as attribute
|
||||
} else if (!ident.empty) {
|
||||
// ident
|
||||
res.id = doc.tagId(ident);
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
if (!str.skipSpaces)
|
||||
return null;
|
||||
ch = str[0];
|
||||
if (ch == ',' || ch == '{')
|
||||
return res;
|
||||
// one or more attribute rules
|
||||
bool attr_rule = false;
|
||||
while (ch == '[' || ch == '.' || ch == '#') {
|
||||
CssSelectorRule rule = parseAttr(str, doc);
|
||||
if (!rule)
|
||||
return null;
|
||||
res.insertRuleStart(rule); //insertRuleAfterStart
|
||||
skipSpaces(str);
|
||||
attr_rule = true;
|
||||
//continue;
|
||||
}
|
||||
// element relation
|
||||
if (ch == '>') {
|
||||
str = str[1 .. $];
|
||||
CssSelectorRule rule = new CssSelectorRule(CssSelectorRuleType.parent);
|
||||
rule.id = res.id;
|
||||
res.insertRuleStart(rule);
|
||||
res.id = 0;
|
||||
continue;
|
||||
} else if (ch == '+') {
|
||||
str = str[1 .. $];
|
||||
CssSelectorRule rule = new CssSelectorRule(CssSelectorRuleType.predecessor);
|
||||
rule.id = res.id;
|
||||
res.insertRuleStart(rule);
|
||||
res.id = 0;
|
||||
continue;
|
||||
} else if (ch.isAlpha) {
|
||||
CssSelectorRule rule = new CssSelectorRule(CssSelectorRuleType.ancessor);
|
||||
rule.id = res.id;
|
||||
res.insertRuleStart(rule);
|
||||
res.id = 0;
|
||||
continue;
|
||||
}
|
||||
if (!attr_rule)
|
||||
return null;
|
||||
else if (str.length > 0 && (str[0] == ',' || str[0] == '{'))
|
||||
return res;
|
||||
}
|
||||
}
|
||||
|
||||
unittest {
|
||||
Document doc = new Document();
|
||||
string str;
|
||||
str = "body { width: 50% }";
|
||||
assert(parseCssSelector(str, doc) !is null);
|
||||
assert(parseCssDeclaration(str, true) !is null);
|
||||
str = "body > p { font-family: sans-serif }";
|
||||
assert(parseCssSelector(str, doc) !is null);
|
||||
assert(parseCssDeclaration(str, true) !is null);
|
||||
str = ".myclass + div { }";
|
||||
assert(parseCssSelector(str, doc) !is null);
|
||||
assert(parseCssDeclaration(str, true) is null); // empty property decl
|
||||
}
|
||||
Loading…
Reference in New Issue