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author | John Mark Bell <jmb@netsurf-browser.org> | 2009-05-27 00:01:19 +0000 |
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committer | John Mark Bell <jmb@netsurf-browser.org> | 2009-05-27 00:01:19 +0000 |
commit | 5f47593e78ab1fb0d0adf24c6cfa1fbae0a36e1a (patch) | |
tree | 2d161667f39bf8b538e8742a610085efa56dcb97 /src/parse/properties/page.c | |
parent | 117437f5b3fe8924782bce996ff12e1929be70a0 (diff) | |
download | libcss-5f47593e78ab1fb0d0adf24c6cfa1fbae0a36e1a.tar.gz libcss-5f47593e78ab1fb0d0adf24c6cfa1fbae0a36e1a.tar.bz2 |
Split out page-related property parsers.
svn path=/trunk/libcss/; revision=7564
Diffstat (limited to 'src/parse/properties/page.c')
-rw-r--r-- | src/parse/properties/page.c | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/src/parse/properties/page.c b/src/parse/properties/page.c new file mode 100644 index 0000000..f997276 --- /dev/null +++ b/src/parse/properties/page.c @@ -0,0 +1,269 @@ +/* + * 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" + +css_error parse_orphans(css_language *c, + const parserutils_vector *vector, int *ctx, + css_style **result) +{ + css_error error; + const css_token *token; + uint8_t flags = 0; + uint16_t value = 0; + uint32_t opv; + css_fixed num = 0; + uint32_t required_size; + + /* <integer> | IDENT (inherit) */ + token = parserutils_vector_iterate(vector, ctx); + if (token == NULL || (token->type != CSS_TOKEN_IDENT && + token->type != CSS_TOKEN_NUMBER)) + return CSS_INVALID; + + error = parse_important(c, vector, ctx, &flags); + if (error != CSS_OK) + return error; + + if (token->ilower == c->strings[INHERIT]) { + flags |= FLAG_INHERIT; + } else if (token->type == CSS_TOKEN_NUMBER) { + size_t consumed = 0; + num = number_from_lwc_string(token->ilower, true, &consumed); + /* Invalid if there are trailing characters */ + if (consumed != lwc_string_length(token->ilower)) + return CSS_INVALID; + + /* Negative values are nonsensical */ + if (num < 0) + return CSS_INVALID; + + value = ORPHANS_SET; + } else + return CSS_INVALID; + + opv = buildOPV(CSS_PROP_ORPHANS, flags, value); + + required_size = sizeof(opv); + if ((flags & FLAG_INHERIT) == false && value == ORPHANS_SET) + required_size += sizeof(num); + + /* Allocate result */ + error = css_stylesheet_style_create(c->sheet, required_size, result); + if (error != CSS_OK) + return error; + + /* Copy the bytecode to it */ + memcpy((*result)->bytecode, &opv, sizeof(opv)); + if ((flags & FLAG_INHERIT) == false && value == ORPHANS_SET) { + memcpy(((uint8_t *) (*result)->bytecode) + sizeof(opv), + &num, sizeof(num)); + } + + return CSS_OK; +} + +css_error parse_page_break_after(css_language *c, + const parserutils_vector *vector, int *ctx, + css_style **result) +{ + css_error error; + const css_token *ident; + uint8_t flags = 0; + uint16_t value = 0; + uint32_t opv; + + /* IDENT (auto, always, avoid, left, right, inherit) */ + ident = parserutils_vector_iterate(vector, ctx); + if (ident == NULL || ident->type != CSS_TOKEN_IDENT) + return CSS_INVALID; + + error = parse_important(c, vector, ctx, &flags); + if (error != CSS_OK) + return error; + + if (ident->ilower == c->strings[INHERIT]) { + flags |= FLAG_INHERIT; + } else if (ident->ilower == c->strings[AUTO]) { + value = PAGE_BREAK_AFTER_AUTO; + } else if (ident->ilower == c->strings[ALWAYS]) { + value = PAGE_BREAK_AFTER_ALWAYS; + } else if (ident->ilower == c->strings[AVOID]) { + value = PAGE_BREAK_AFTER_AVOID; + } else if (ident->ilower == c->strings[LEFT]) { + value = PAGE_BREAK_AFTER_LEFT; + } else if (ident->ilower == c->strings[RIGHT]) { + value = PAGE_BREAK_AFTER_RIGHT; + } else + return CSS_INVALID; + + opv = buildOPV(CSS_PROP_PAGE_BREAK_AFTER, flags, value); + + /* Allocate result */ + error = css_stylesheet_style_create(c->sheet, sizeof(opv), result); + if (error != CSS_OK) + return error; + + /* Copy the bytecode to it */ + memcpy((*result)->bytecode, &opv, sizeof(opv)); + + return CSS_OK; +} + +css_error parse_page_break_before(css_language *c, + const parserutils_vector *vector, int *ctx, + css_style **result) +{ + css_error error; + const css_token *ident; + uint8_t flags = 0; + uint16_t value = 0; + uint32_t opv; + + /* IDENT (auto, always, avoid, left, right, inherit) */ + ident = parserutils_vector_iterate(vector, ctx); + if (ident == NULL || ident->type != CSS_TOKEN_IDENT) + return CSS_INVALID; + + error = parse_important(c, vector, ctx, &flags); + if (error != CSS_OK) + return error; + + if (ident->ilower == c->strings[INHERIT]) { + flags |= FLAG_INHERIT; + } else if (ident->ilower == c->strings[AUTO]) { + value = PAGE_BREAK_BEFORE_AUTO; + } else if (ident->ilower == c->strings[ALWAYS]) { + value = PAGE_BREAK_BEFORE_ALWAYS; + } else if (ident->ilower == c->strings[AVOID]) { + value = PAGE_BREAK_BEFORE_AVOID; + } else if (ident->ilower == c->strings[LEFT]) { + value = PAGE_BREAK_BEFORE_LEFT; + } else if (ident->ilower == c->strings[RIGHT]) { + value = PAGE_BREAK_BEFORE_RIGHT; + } else + return CSS_INVALID; + + opv = buildOPV(CSS_PROP_PAGE_BREAK_BEFORE, flags, value); + + /* Allocate result */ + error = css_stylesheet_style_create(c->sheet, sizeof(opv), result); + if (error != CSS_OK) + return error; + + /* Copy the bytecode to it */ + memcpy((*result)->bytecode, &opv, sizeof(opv)); + + return CSS_OK; +} + +css_error parse_page_break_inside(css_language *c, + const parserutils_vector *vector, int *ctx, + css_style **result) +{ + css_error error; + const css_token *ident; + uint8_t flags = 0; + uint16_t value = 0; + uint32_t opv; + + /* IDENT (auto, avoid, inherit) */ + ident = parserutils_vector_iterate(vector, ctx); + if (ident == NULL || ident->type != CSS_TOKEN_IDENT) + return CSS_INVALID; + + error = parse_important(c, vector, ctx, &flags); + if (error != CSS_OK) + return error; + + if (ident->ilower == c->strings[INHERIT]) { + flags |= FLAG_INHERIT; + } else if (ident->ilower == c->strings[AUTO]) { + value = PAGE_BREAK_INSIDE_AUTO; + } else if (ident->ilower == c->strings[AVOID]) { + value = PAGE_BREAK_INSIDE_AVOID; + } else + return CSS_INVALID; + + opv = buildOPV(CSS_PROP_PAGE_BREAK_INSIDE, flags, value); + + /* Allocate result */ + error = css_stylesheet_style_create(c->sheet, sizeof(opv), result); + if (error != CSS_OK) + return error; + + /* Copy the bytecode to it */ + memcpy((*result)->bytecode, &opv, sizeof(opv)); + + return CSS_OK; +} + +css_error parse_widows(css_language *c, + const parserutils_vector *vector, int *ctx, + css_style **result) +{ + css_error error; + const css_token *token; + uint8_t flags = 0; + uint16_t value = 0; + uint32_t opv; + css_fixed num = 0; + uint32_t required_size; + + /* <integer> | IDENT (inherit) */ + token = parserutils_vector_iterate(vector, ctx); + if (token == NULL || (token->type != CSS_TOKEN_IDENT && + token->type != CSS_TOKEN_NUMBER)) + return CSS_INVALID; + + error = parse_important(c, vector, ctx, &flags); + if (error != CSS_OK) + return error; + + if (token->ilower == c->strings[INHERIT]) { + flags |= FLAG_INHERIT; + } else if (token->type == CSS_TOKEN_NUMBER) { + size_t consumed = 0; + num = number_from_lwc_string(token->ilower, true, &consumed); + /* Invalid if there are trailing characters */ + if (consumed != lwc_string_length(token->ilower)) + return CSS_INVALID; + + /* Negative values are nonsensical */ + if (num < 0) + return CSS_INVALID; + + value = WIDOWS_SET; + } else + return CSS_INVALID; + + opv = buildOPV(CSS_PROP_WIDOWS, flags, value); + + required_size = sizeof(opv); + if ((flags & FLAG_INHERIT) == false && value == WIDOWS_SET) + required_size += sizeof(num); + + /* Allocate result */ + error = css_stylesheet_style_create(c->sheet, required_size, result); + if (error != CSS_OK) + return error; + + /* Copy the bytecode to it */ + memcpy((*result)->bytecode, &opv, sizeof(opv)); + if ((flags & FLAG_INHERIT) == false && value == WIDOWS_SET) { + memcpy(((uint8_t *) (*result)->bytecode) + sizeof(opv), + &num, sizeof(num)); + } + + return CSS_OK; +} + |