From f3cf0f579347a16120df8fc1c1ec3cd1f4e6d44e Mon Sep 17 00:00:00 2001
From: Vincent Sanders <vince@netsurf-browser.org>
Date: Sun, 2 Jan 2011 23:20:31 +0000
Subject: simple properties split in parse similar to select in preparation for
 future generation

svn path=/trunk/libcss/; revision=11188
---
 src/parse/properties/border_spacing.c | 143 ++++++++++++++++++++++++++++++++++
 1 file changed, 143 insertions(+)
 create mode 100644 src/parse/properties/border_spacing.c

(limited to 'src/parse/properties/border_spacing.c')

diff --git a/src/parse/properties/border_spacing.c b/src/parse/properties/border_spacing.c
new file mode 100644
index 0000000..623f616
--- /dev/null
+++ b/src/parse/properties/border_spacing.c
@@ -0,0 +1,143 @@
+/*
+ * This file is part of LibCSS.
+ * Licensed under the MIT License,
+ *		  http://www.opensource.org/licenses/mit-license.php
+ * Copyright 2009 John-Mark Bell <jmb@netsurf-browser.org>
+ */
+
+#include <assert.h>
+#include <string.h>
+
+#include "bytecode/bytecode.h"
+#include "bytecode/opcodes.h"
+#include "parse/properties/properties.h"
+#include "parse/properties/utils.h"
+
+/**
+ * Parse border-spacing
+ *
+ * \param c	  Parsing context
+ * \param vector  Vector of tokens to process
+ * \param ctx	  Pointer to vector iteration context
+ * \param result  Pointer to location to receive resulting style
+ * \return CSS_OK on success,
+ *	   CSS_NOMEM on memory exhaustion,
+ *	   CSS_INVALID if the input is not valid
+ *
+ * Post condition: \a *ctx is updated with the next token to process
+ *		   If the input is invalid, then \a *ctx remains unchanged.
+ */
+css_error parse_border_spacing(css_language *c, 
+		const parserutils_vector *vector, int *ctx, 
+		css_style **result)
+{
+	int orig_ctx = *ctx;
+	css_error error;
+	const css_token *token;
+	uint8_t flags = 0;
+	uint16_t value = 0;
+	uint32_t opv;
+	css_fixed length[2] = { 0 };
+	uint32_t unit[2] = { 0 };
+	uint32_t required_size;
+	bool match;
+
+	/* length length? | IDENT(inherit) */
+	token = parserutils_vector_peek(vector, *ctx);
+	if (token == NULL) {
+		*ctx = orig_ctx;
+		return CSS_INVALID;
+	}
+
+	if (token->type == CSS_TOKEN_IDENT &&
+			(lwc_string_caseless_isequal(
+			token->idata, c->strings[INHERIT],
+			&match) == lwc_error_ok && match)) {
+		parserutils_vector_iterate(vector, ctx);
+		flags = FLAG_INHERIT;
+	} else {
+		int num_lengths = 0;
+
+		error = parse_unit_specifier(c, vector, ctx, UNIT_PX,
+				&length[0], &unit[0]);
+		if (error != CSS_OK) {
+			*ctx = orig_ctx;
+			return error;
+		}
+
+		if (unit[0] & UNIT_ANGLE || unit[0] & UNIT_TIME || 
+				unit[0] & UNIT_FREQ || unit[0] & UNIT_PCT) {
+			*ctx = orig_ctx;
+			return CSS_INVALID;
+		}
+
+		num_lengths = 1;
+
+		consumeWhitespace(vector, ctx);
+
+		token = parserutils_vector_peek(vector, *ctx);
+		if (token != NULL) {
+			/* Attempt second length, ignoring errors.
+			 * The core !important parser will ensure 
+			 * any remaining junk is thrown out.
+			 * Ctx will be preserved on error, as usual
+			 */
+			error = parse_unit_specifier(c, vector, ctx, UNIT_PX,
+					&length[1], &unit[1]);
+			if (error == CSS_OK) {
+				if (unit[1] & UNIT_ANGLE || 
+						unit[1] & UNIT_TIME ||
+						unit[1] & UNIT_FREQ || 
+						unit[1] & UNIT_PCT) {
+					*ctx = orig_ctx;
+					return CSS_INVALID;
+				}
+
+				num_lengths = 2;
+			}
+		}
+
+		if (num_lengths == 1) {
+			/* Only one length specified. Use for both axes. */
+			length[1] = length[0];
+			unit[1] = unit[0];
+		}
+
+		/* Lengths must not be negative */
+		if (length[0] < 0 || length[1] < 0) {
+			*ctx = orig_ctx;
+			return CSS_INVALID;
+		}
+
+		value = BORDER_SPACING_SET;
+	}
+
+	opv = buildOPV(CSS_PROP_BORDER_SPACING, flags, value);
+
+	required_size = sizeof(opv);
+	if ((flags & FLAG_INHERIT) == false && value == BORDER_SPACING_SET)
+		required_size += 2 * (sizeof(length[0]) + sizeof(unit[0]));
+
+	/* Allocate result */
+	error = css_stylesheet_style_create(c->sheet, required_size, result);
+	if (error != CSS_OK) {
+		*ctx = orig_ctx;
+		return error;
+	}
+
+	/* Copy the bytecode to it */
+	memcpy((*result)->bytecode, &opv, sizeof(opv));
+	if ((flags & FLAG_INHERIT) == false && value == BORDER_SPACING_SET) {
+		uint8_t *ptr = ((uint8_t *) (*result)->bytecode) + sizeof(opv);
+
+		memcpy(ptr, &length[0], sizeof(length[0]));
+		ptr += sizeof(length[0]);
+		memcpy(ptr, &unit[0], sizeof(unit[0]));
+		ptr += sizeof(unit[0]);
+		memcpy(ptr, &length[1], sizeof(length[1]));
+		ptr += sizeof(length[1]);
+		memcpy(ptr, &unit[1], sizeof(unit[1]));
+	}
+
+	return CSS_OK;
+}
-- 
cgit v1.2.3