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authorVincent Sanders <vince@netsurf-browser.org>2011-01-02 23:20:31 +0000
committerVincent Sanders <vince@netsurf-browser.org>2011-01-02 23:20:31 +0000
commitf3cf0f579347a16120df8fc1c1ec3cd1f4e6d44e (patch)
tree4b98d88fc719198ebfa28f37a58fb61e8bddfcb8 /src/parse/properties/text_decoration.c
parent606cf0251feacadcaa63191a643dc8fc57a7c613 (diff)
downloadlibcss-f3cf0f579347a16120df8fc1c1ec3cd1f4e6d44e.tar.gz
libcss-f3cf0f579347a16120df8fc1c1ec3cd1f4e6d44e.tar.bz2
simple properties split in parse similar to select in preparation for future generation
svn path=/trunk/libcss/; revision=11188
Diffstat (limited to 'src/parse/properties/text_decoration.c')
-rw-r--r--src/parse/properties/text_decoration.c123
1 files changed, 123 insertions, 0 deletions
diff --git a/src/parse/properties/text_decoration.c b/src/parse/properties/text_decoration.c
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+++ b/src/parse/properties/text_decoration.c
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+/*
+ * 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 text-decoration
+ *
+ * \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_text_decoration(css_language *c,
+ const parserutils_vector *vector, int *ctx,
+ css_style **result)
+{
+ int orig_ctx = *ctx;
+ css_error error;
+ const css_token *ident;
+ uint8_t flags = 0;
+ uint16_t value = 0;
+ uint32_t opv;
+ bool match;
+
+ /* IDENT([ underline || overline || line-through || blink ])
+ * | IDENT (none, inherit) */
+ ident = parserutils_vector_iterate(vector, ctx);
+ if (ident == NULL || ident->type != CSS_TOKEN_IDENT) {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+
+ if ((lwc_string_caseless_isequal(
+ ident->idata, c->strings[INHERIT],
+ &match) == lwc_error_ok && match)) {
+ flags |= FLAG_INHERIT;
+ } else if ((lwc_string_caseless_isequal(
+ ident->idata, c->strings[NONE],
+ &match) == lwc_error_ok && match)) {
+ value = TEXT_DECORATION_NONE;
+ } else {
+ while (ident != NULL) {
+ if ((lwc_string_caseless_isequal(
+ ident->idata, c->strings[UNDERLINE],
+ &match) == lwc_error_ok && match)) {
+ if ((value & TEXT_DECORATION_UNDERLINE) == 0)
+ value |= TEXT_DECORATION_UNDERLINE;
+ else {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ ident->idata, c->strings[OVERLINE],
+ &match) == lwc_error_ok && match)) {
+ if ((value & TEXT_DECORATION_OVERLINE) == 0)
+ value |= TEXT_DECORATION_OVERLINE;
+ else {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ ident->idata, c->strings[LINE_THROUGH],
+ &match) == lwc_error_ok && match)) {
+ if ((value & TEXT_DECORATION_LINE_THROUGH) == 0)
+ value |= TEXT_DECORATION_LINE_THROUGH;
+ else {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ ident->idata, c->strings[BLINK],
+ &match) == lwc_error_ok && match)) {
+ if ((value & TEXT_DECORATION_BLINK) == 0)
+ value |= TEXT_DECORATION_BLINK;
+ else {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+ } else {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+
+ consumeWhitespace(vector, ctx);
+
+ ident = parserutils_vector_peek(vector, *ctx);
+ if (ident != NULL && ident->type != CSS_TOKEN_IDENT)
+ break;
+ ident = parserutils_vector_iterate(vector, ctx);
+ }
+ }
+
+ opv = buildOPV(CSS_PROP_TEXT_DECORATION, flags, value);
+
+ /* Allocate result */
+ error = css_stylesheet_style_create(c->sheet, sizeof(opv), result);
+ if (error != CSS_OK) {
+ *ctx = orig_ctx;
+ return error;
+ }
+
+ /* Copy the bytecode to it */
+ memcpy((*result)->bytecode, &opv, sizeof(opv));
+
+ return CSS_OK;
+}