diff options
Diffstat (limited to 'src/parse/properties/text.c')
-rw-r--r-- | src/parse/properties/text.c | 499 |
1 files changed, 499 insertions, 0 deletions
diff --git a/src/parse/properties/text.c b/src/parse/properties/text.c new file mode 100644 index 0000000..8b71c73 --- /dev/null +++ b/src/parse/properties/text.c @@ -0,0 +1,499 @@ +/* + * 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_direction(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 (ltr, rtl, 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[LTR]) { + value = DIRECTION_LTR; + } else if (ident->ilower == c->strings[RTL]) { + value = DIRECTION_RTL; + } else + return CSS_INVALID; + + opv = buildOPV(CSS_PROP_DIRECTION, 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_letter_spacing(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 length = 0; + uint32_t unit = 0; + uint32_t required_size; + + /* length | IDENT(normal, inherit) */ + token = parserutils_vector_peek(vector, *ctx); + if (token == NULL) + return CSS_INVALID; + + if (token->type == CSS_TOKEN_IDENT && + token->ilower == c->strings[INHERIT]) { + parserutils_vector_iterate(vector, ctx); + flags = FLAG_INHERIT; + } else if (token->type == CSS_TOKEN_IDENT && + token->ilower == c->strings[NORMAL]) { + parserutils_vector_iterate(vector, ctx); + value = LETTER_SPACING_NORMAL; + } else { + error = parse_unit_specifier(c, vector, ctx, UNIT_PX, + &length, &unit); + if (error != CSS_OK) + return error; + + if (unit & UNIT_ANGLE || unit & UNIT_TIME || unit & UNIT_FREQ || + unit & UNIT_PCT) + return CSS_INVALID; + + value = LETTER_SPACING_SET; + } + + error = parse_important(c, vector, ctx, &flags); + if (error != CSS_OK) + return error; + + opv = buildOPV(CSS_PROP_LETTER_SPACING, flags, value); + + required_size = sizeof(opv); + if ((flags & FLAG_INHERIT) == false && value == LETTER_SPACING_SET) + required_size += sizeof(length) + sizeof(unit); + + /* 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 == LETTER_SPACING_SET) { + memcpy(((uint8_t *) (*result)->bytecode) + sizeof(opv), + &length, sizeof(length)); + memcpy(((uint8_t *) (*result)->bytecode) + sizeof(opv) + + sizeof(length), &unit, sizeof(unit)); + } + + return CSS_OK; +} + +css_error parse_text_align(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 (left, right, center, justify, 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[LEFT]) { + value = TEXT_ALIGN_LEFT; + } else if (ident->ilower == c->strings[RIGHT]) { + value = TEXT_ALIGN_RIGHT; + } else if (ident->ilower == c->strings[CENTER]) { + value = TEXT_ALIGN_CENTER; + } else if (ident->ilower == c->strings[JUSTIFY]) { + value = TEXT_ALIGN_JUSTIFY; + } else + return CSS_INVALID; + + opv = buildOPV(CSS_PROP_TEXT_ALIGN, 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_text_decoration(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([ underline || overline || line-through || blink ]) + * | IDENT (none, inherit) */ + ident = parserutils_vector_iterate(vector, ctx); + if (ident == NULL || ident->type != CSS_TOKEN_IDENT) + return CSS_INVALID; + + if (ident->ilower == c->strings[INHERIT]) { + flags |= FLAG_INHERIT; + } else if (ident->ilower == c->strings[NONE]) { + value = TEXT_DECORATION_NONE; + } else { + while (ident != NULL) { + if (ident->ilower == c->strings[UNDERLINE]) { + if ((value & TEXT_DECORATION_UNDERLINE) == 0) + value |= TEXT_DECORATION_UNDERLINE; + else + return CSS_INVALID; + } else if (ident->ilower == c->strings[OVERLINE]) { + if ((value & TEXT_DECORATION_OVERLINE) == 0) + value |= TEXT_DECORATION_OVERLINE; + else + return CSS_INVALID; + } else if (ident->ilower == c->strings[LINE_THROUGH]) { + if ((value & TEXT_DECORATION_LINE_THROUGH) == 0) + value |= TEXT_DECORATION_LINE_THROUGH; + else + return CSS_INVALID; + } else if (ident->ilower == c->strings[BLINK]) { + if ((value & TEXT_DECORATION_BLINK) == 0) + value |= TEXT_DECORATION_BLINK; + else + return CSS_INVALID; + } else + 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); + } + } + + error = parse_important(c, vector, ctx, &flags); + if (error != CSS_OK) + return error; + + opv = buildOPV(CSS_PROP_TEXT_DECORATION, 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_text_indent(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 length = 0; + uint32_t unit = 0; + uint32_t required_size; + + /* length | percentage | IDENT(inherit) */ + token = parserutils_vector_peek(vector, *ctx); + if (token == NULL) + return CSS_INVALID; + + if (token->type == CSS_TOKEN_IDENT && + token->ilower == c->strings[INHERIT]) { + parserutils_vector_iterate(vector, ctx); + flags = FLAG_INHERIT; + } else { + error = parse_unit_specifier(c, vector, ctx, UNIT_PX, + &length, &unit); + if (error != CSS_OK) + return error; + + if (unit & UNIT_ANGLE || unit & UNIT_TIME || unit & UNIT_FREQ) + return CSS_INVALID; + + value = TEXT_INDENT_SET; + } + + error = parse_important(c, vector, ctx, &flags); + if (error != CSS_OK) + return error; + + opv = buildOPV(CSS_PROP_TEXT_INDENT, flags, value); + + required_size = sizeof(opv); + if ((flags & FLAG_INHERIT) == false && value == TEXT_INDENT_SET) + required_size += sizeof(length) + sizeof(unit); + + /* 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 == TEXT_INDENT_SET) { + memcpy(((uint8_t *) (*result)->bytecode) + sizeof(opv), + &length, sizeof(length)); + memcpy(((uint8_t *) (*result)->bytecode) + sizeof(opv) + + sizeof(length), &unit, sizeof(unit)); + } + + return CSS_OK; +} + +css_error parse_text_transform(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 (capitalize, uppercase, lowercase, none, 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[CAPITALIZE]) { + value = TEXT_TRANSFORM_CAPITALIZE; + } else if (ident->ilower == c->strings[UPPERCASE]) { + value = TEXT_TRANSFORM_UPPERCASE; + } else if (ident->ilower == c->strings[LOWERCASE]) { + value = TEXT_TRANSFORM_LOWERCASE; + } else if (ident->ilower == c->strings[NONE]) { + value = TEXT_TRANSFORM_NONE; + } else + return CSS_INVALID; + + opv = buildOPV(CSS_PROP_TEXT_TRANSFORM, 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_unicode_bidi(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 (normal, embed, bidi-override, 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[NORMAL]) { + value = UNICODE_BIDI_NORMAL; + } else if (ident->ilower == c->strings[EMBED]) { + value = UNICODE_BIDI_EMBED; + } else if (ident->ilower == c->strings[BIDI_OVERRIDE]) { + value = UNICODE_BIDI_BIDI_OVERRIDE; + } else + return CSS_INVALID; + + opv = buildOPV(CSS_PROP_UNICODE_BIDI, 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_white_space(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 (normal, pre, nowrap, pre-wrap, pre-line, 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[NORMAL]) { + value = WHITE_SPACE_NORMAL; + } else if (ident->ilower == c->strings[PRE]) { + value = WHITE_SPACE_PRE; + } else if (ident->ilower == c->strings[NOWRAP]) { + value = WHITE_SPACE_NOWRAP; + } else if (ident->ilower == c->strings[PRE_WRAP]) { + value = WHITE_SPACE_PRE_WRAP; + } else if (ident->ilower == c->strings[PRE_LINE]) { + value = WHITE_SPACE_PRE_LINE; + } else + return CSS_INVALID; + + opv = buildOPV(CSS_PROP_WHITE_SPACE, 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_word_spacing(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 length = 0; + uint32_t unit = 0; + uint32_t required_size; + + /* length | IDENT(normal, inherit) */ + token = parserutils_vector_peek(vector, *ctx); + if (token == NULL) + return CSS_INVALID; + + if (token->type == CSS_TOKEN_IDENT && + token->ilower == c->strings[INHERIT]) { + parserutils_vector_iterate(vector, ctx); + flags = FLAG_INHERIT; + } else if (token->type == CSS_TOKEN_IDENT && + token->ilower == c->strings[NORMAL]) { + parserutils_vector_iterate(vector, ctx); + value = WORD_SPACING_NORMAL; + } else { + error = parse_unit_specifier(c, vector, ctx, UNIT_PX, + &length, &unit); + if (error != CSS_OK) + return error; + + if (unit & UNIT_ANGLE || unit & UNIT_TIME || unit & UNIT_FREQ || + unit & UNIT_PCT) + return CSS_INVALID; + + value = WORD_SPACING_SET; + } + + error = parse_important(c, vector, ctx, &flags); + if (error != CSS_OK) + return error; + + opv = buildOPV(CSS_PROP_WORD_SPACING, flags, value); + + required_size = sizeof(opv); + if ((flags & FLAG_INHERIT) == false && value == WORD_SPACING_SET) + required_size += sizeof(length) + sizeof(unit); + + /* 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 == WORD_SPACING_SET) { + memcpy(((uint8_t *) (*result)->bytecode) + sizeof(opv), + &length, sizeof(length)); + memcpy(((uint8_t *) (*result)->bytecode) + sizeof(opv) + + sizeof(length), &unit, sizeof(unit)); + } + + return CSS_OK; +} + |