import CSS parser code from dillo-0.8.0-css-3

1 files changed, 129 insertions, 0 deletions

diff --git a/src/cssparser.hh b/src/cssparser.hh
new file mode 100644
index 00000000..b5fce22b
--- /dev/null
+++ b/src/cssparser.hh
@@ -0,0 +1,129 @@
+#ifndef __CSSPARSER_HH__
+#define __CSSPARSER_HH__
+
+/* The last three ones are never parsed. */
+#define CSS_NUM_INTERNAL_PROPERTIES 3
+#define CSS_NUM_PARSED_PROPERTIES \
+   (CSS_PROPERTY_LAST - CSS_NUM_INTERNAL_PROPERTIES)
+
+
+typedef enum {
+   CSS_TYPE_INTEGER,            /* This type is only used internally, for x-*
+                                   properties. */
+   CSS_TYPE_ENUM,               /* Value is i, if represented by
+                                   enum_symbols[i]. */
+   CSS_TYPE_MULTI_ENUM,         /* For all enum_symbols[i], 1 << i are
+                                   combined. */
+   CSS_TYPE_LENGTH_PERCENTAGE,  /* <length> or <percentage>. Represented by
+                                   CssLength. */
+   CSS_TYPE_LENGTH,             /* <length>, represented as CssLength.
+                                   Note: In some cases, CSS_TYPE_LENGTH is used
+                                   instead of CSS_TYPE_LENGTH_PERCENTAGE,
+                                   only because Dw cannot handle percentages
+                                   in this particular case (e.g.
+                                   'margin-*-width'). */
+   CSS_TYPE_COLOR,              /* Represented as integer. */
+   CSS_TYPE_FONT_WEIGHT,        /* this very special and only used by
+                                   'font-weight' */
+   CSS_TYPE_STRING,             /* <string> */
+   CSS_TYPE_SYMBOL,             /* Symbols, which are directly copied (as
+                                   opposed to CSS_TYPE_ENUM and 
+                                   CSS_TYPE_MULTI_ENUM). Used for
+                                   'font-family'. */
+   CSS_TYPE_UNUSED              /* Not yet used. Will itself get unused some
+                                   day. */
+} CssValueType;
+
+typedef enum {
+   CSS_ORIGIN_USER_AGENT,
+   CSS_ORIGIN_USER,
+   CSS_ORIGIN_AUTHOR,
+} CssOrigin;
+
+/* Origin and weight. Used only internally.*/
+typedef enum {
+   CSS_PRIMARY_USER_IMPORTANT,
+   CSS_PRIMARY_AUTHOR_IMPORTANT,
+   CSS_PRIMARY_AUTHOR,
+   CSS_PRIMARY_USER,
+   CSS_PRIMARY_USER_AGENT,
+   CSS_PRIMARY_LAST,
+} CssPrimaryOrder;
+
+typedef struct {
+   char *symbol;
+   CssValueType type;
+   char **enum_symbols;
+} CssPropertyInfo;
+
+
+/*
+ * Lengths are represented as int in the following way:
+ * 
+ *    +---+ - - - +---+---+- - - - - -+---+---+---+---+
+ *    | integer part  | decimal fraction  |   type    |
+ *    +---+ - - - +---+---+- - - - - -+---+---+---+---+
+ *     n-1          19  18              3   2  1   0
+ *
+ *    | <------ fixed point value ------> |
+ *
+ * where type is one of the CSS_LENGTH_TYPE_* values.
+ */
+
+typedef int CssLength;
+
+enum {
+   CSS_LENGTH_TYPE_PX,
+   CSS_LENGTH_TYPE_MM,         /* "cm", "in", "pt" and "pc" are converted into
+                                  millimeters. */
+   CSS_LENGTH_TYPE_EM,
+   CSS_LENGTH_TYPE_EX,
+   CSS_LENGTH_TYPE_PERCENTAGE,
+   CSS_LENGTH_TYPE_AUTO        /* This can be used as a simple value. */
+};
+
+#define CSS_CREATE_LENGTH(v, t) ( ( (int)((v) * (1 << 19)) & ~7 ) | (t) )
+#define CSS_LENGTH_VALUE(l)     ( ( (float)((l) & ~7) ) / (1 << 19) )
+#define CSS_LENGTH_TYPE(l)      ((l) & 7)
+
+/*
+ * Font weights are either absolute (number between 100 and 900), or have
+ * the following relative values:
+ */
+#define CSS_FONT_WEIGHT_LIGHTER -1
+#define CSS_FONT_WEIGHT_BOLDER  -2
+
+/* This is the difference used. */
+#define CSS_FONT_WEIGHT_STEP 300
+
+/* Some special font weights. */
+#define CSS_FONT_WEIGHT_LIGHT  100
+#define CSS_FONT_WEIGHT_NORMAL 400
+#define CSS_FONT_WEIGHT_BOLD   700
+
+#define CSS_FONT_WEIGHT_MIN    100
+#define CSS_FONT_WEIGHT_MAX    900
+
+
+void        a_Css_init                        (void);
+void        a_Css_freeall                     (void);
+
+void        a_Css_parse                       (CssContext *context,
+                                               const char *buf,
+                                               int buflen,
+                                               int order_count,
+                                               CssOrigin origin);
+
+void        p_Css_parse_element_style         (CssContext *context,
+                                               char *id,
+                                               char *klass,
+                                               char *pseudo,
+                                               char *element,
+                                               const char *buf,
+                                               int buflen,
+                                               int order_count,
+                                               CssOrigin origin);
+
+extern CssPropertyInfo Css_property_info[CssProperty::CSS_PROPERTY_LAST];
+
+#endif // __CSS_H__