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-rw-r--r--src/parse/properties/cursor.c373
1 files changed, 373 insertions, 0 deletions
diff --git a/src/parse/properties/cursor.c b/src/parse/properties/cursor.c
new file mode 100644
index 0000000..725e7b7
--- /dev/null
+++ b/src/parse/properties/cursor.c
@@ -0,0 +1,373 @@
+/*
+ * 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 <string.h>
+
+#include "bytecode/bytecode.h"
+#include "bytecode/opcodes.h"
+#include "parse/properties/properties.h"
+#include "parse/properties/utils.h"
+
+/**
+ * Parse cursor
+ *
+ * \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_cursor(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;
+ uint32_t required_size = sizeof(opv);
+ int temp_ctx = *ctx;
+ uint8_t *ptr;
+ bool match;
+
+ /* [ (URI ',')* IDENT(auto, crosshair, default, pointer, move, e-resize,
+ * ne-resize, nw-resize, n-resize, se-resize, sw-resize,
+ * s-resize, w-resize, text, wait, help, progress) ]
+ * | IDENT(inherit)
+ */
+
+ /* Pass 1: validate input and calculate bytecode size */
+ token = parserutils_vector_iterate(vector, &temp_ctx);
+ if (token == NULL || (token->type != CSS_TOKEN_IDENT &&
+ token->type != CSS_TOKEN_URI)) {
+ *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)) {
+ flags = FLAG_INHERIT;
+ } else {
+ bool first = true;
+
+ /* URI* */
+ while (token != NULL && token->type == CSS_TOKEN_URI) {
+ lwc_string *uri = token->idata;
+
+ if (first == false) {
+ required_size += sizeof(opv);
+ } else {
+ value = CURSOR_URI;
+ }
+ required_size += sizeof(uri);
+
+ consumeWhitespace(vector, &temp_ctx);
+
+ /* Expect ',' */
+ token = parserutils_vector_iterate(vector, &temp_ctx);
+ if (token == NULL || tokenIsChar(token, ',') == false) {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+
+ consumeWhitespace(vector, &temp_ctx);
+
+ /* Expect either URI or IDENT */
+ token = parserutils_vector_iterate(vector, &temp_ctx);
+ if (token == NULL || (token->type != CSS_TOKEN_IDENT &&
+ token->type != CSS_TOKEN_URI)) {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+
+ first = false;
+ }
+
+ /* IDENT */
+ if (token != NULL && token->type == CSS_TOKEN_IDENT) {
+ if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[AUTO],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_AUTO;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[CROSSHAIR],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_CROSSHAIR;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[DEFAULT],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_DEFAULT;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[POINTER],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_POINTER;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[MOVE],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_MOVE;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[E_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_E_RESIZE;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[NE_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_NE_RESIZE;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[NW_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_NW_RESIZE;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[N_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_N_RESIZE;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[SE_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_SE_RESIZE;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[SW_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_SW_RESIZE;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[S_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_S_RESIZE;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[W_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_W_RESIZE;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[LIBCSS_TEXT],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_TEXT;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[WAIT],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_WAIT;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[HELP],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_HELP;
+ }
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[PROGRESS],
+ &match) == lwc_error_ok && match)) {
+ if (first) {
+ value = CURSOR_PROGRESS;
+ }
+ } else {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+
+ if (first == false) {
+ required_size += sizeof(opv);
+ }
+ }
+ }
+
+ opv = buildOPV(CSS_PROP_CURSOR, flags, value);
+
+ /* Allocate result */
+ error = css_stylesheet_style_create(c->sheet, required_size, result);
+ if (error != CSS_OK) {
+ *ctx = orig_ctx;
+ return error;
+ }
+
+ /* Copy OPV to bytecode */
+ ptr = (*result)->bytecode;
+ memcpy(ptr, &opv, sizeof(opv));
+ ptr += sizeof(opv);
+
+ /* Pass 2: construct bytecode */
+ token = parserutils_vector_iterate(vector, ctx);
+ if (token == NULL || (token->type != CSS_TOKEN_IDENT &&
+ token->type != CSS_TOKEN_URI)) {
+ *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)) {
+ /* Nothing to do */
+ } else {
+ bool first = true;
+
+ /* URI* */
+ while (token != NULL && token->type == CSS_TOKEN_URI) {
+ lwc_string *uri;
+
+ error = c->sheet->resolve(c->sheet->resolve_pw,
+ c->sheet->url,
+ token->idata, &uri);
+ if (error != CSS_OK) {
+ *ctx = orig_ctx;
+ return error;
+ }
+
+ if (first == false) {
+ opv = CURSOR_URI;
+ memcpy(ptr, &opv, sizeof(opv));
+ ptr += sizeof(opv);
+ }
+
+ /* Don't ref URI -- we want to pass ownership to the
+ * bytecode */
+ memcpy(ptr, &uri, sizeof(uri));
+ ptr += sizeof(uri);
+
+ consumeWhitespace(vector, ctx);
+
+ /* Expect ',' */
+ token = parserutils_vector_iterate(vector, ctx);
+ if (token == NULL || tokenIsChar(token, ',') == false) {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+
+ consumeWhitespace(vector, ctx);
+
+ /* Expect either URI or IDENT */
+ token = parserutils_vector_iterate(vector, ctx);
+ if (token == NULL || (token->type != CSS_TOKEN_IDENT &&
+ token->type != CSS_TOKEN_URI)) {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+
+ first = false;
+ }
+
+ /* IDENT */
+ if (token != NULL && token->type == CSS_TOKEN_IDENT) {
+ if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[AUTO],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_AUTO;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[CROSSHAIR],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_CROSSHAIR;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[DEFAULT],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_DEFAULT;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[POINTER],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_POINTER;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[MOVE],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_MOVE;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[E_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_E_RESIZE;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[NE_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_NE_RESIZE;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[NW_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_NW_RESIZE;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[N_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_N_RESIZE;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[SE_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_SE_RESIZE;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[SW_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_SW_RESIZE;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[S_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_S_RESIZE;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[W_RESIZE],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_W_RESIZE;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[LIBCSS_TEXT],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_TEXT;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[WAIT],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_WAIT;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[HELP],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_HELP;
+ } else if ((lwc_string_caseless_isequal(
+ token->idata, c->strings[PROGRESS],
+ &match) == lwc_error_ok && match)) {
+ opv = CURSOR_PROGRESS;
+ } else {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+
+ if (first == false) {
+ memcpy(ptr, &opv, sizeof(opv));
+ ptr += sizeof(opv);
+ }
+ }
+ }
+
+ return CSS_OK;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-19 17:09:53 +0000