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author | Michael Drake <michael.drake@codethink.co.uk> | 2018-08-01 15:38:49 +0100 |
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committer | Michael Drake <michael.drake@codethink.co.uk> | 2019-03-10 13:42:03 +0000 |
commit | 3342c8e3bafba86ff1154db940891a3405cb1c30 (patch) | |
tree | fb1b24398bbe01ee4932aecf86acfa1efa644d41 /src/stylesheet.c | |
parent | 9eea40513329fbd10d494f5a2d29664847043c4c (diff) | |
download | libcss-3342c8e3bafba86ff1154db940891a3405cb1c30.tar.gz libcss-3342c8e3bafba86ff1154db940891a3405cb1c30.tar.bz2 |
HACKS for testing Media Queries parsing.
Top level stylesheets need to have their media query passed in.
So we need a way to parse standalone media queries.
This was hacked together to explore doing that.
However, it encounteded an issue where it seems the parseAtRule()
function in src/parse/parse.c doesn't handle the full grammar for
media queries.
Diffstat (limited to 'src/stylesheet.c')
-rw-r--r-- | src/stylesheet.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/src/stylesheet.c b/src/stylesheet.c index 22c7681..934954c 100644 --- a/src/stylesheet.c +++ b/src/stylesheet.c @@ -113,6 +113,113 @@ css_error css__stylesheet_string_get(css_stylesheet *sheet, return CSS_OK; } +static css_error css_parse_media_query_handle_event(css_parser_event type, + const parserutils_vector *tokens, void *pw) +{ + int idx = 0; + css_error err; + css_mq_query *media; + const css_token *tok; + lwc_string **strings = pw; + + printf("mq event type: %i\n", type); + + /* Skip @media */ + tok = parserutils_vector_iterate(tokens, &idx); + assert(tok->type == CSS_TOKEN_ATKEYWORD); + UNUSED(tok); + + /* Skip whitespace */ + tok = parserutils_vector_iterate(tokens, &idx); + assert(tok->type == CSS_TOKEN_S); + UNUSED(tok); + + printf(" Tokens:\n"); + while ((tok = parserutils_vector_iterate(tokens, &idx)) != NULL) { + if (tok->idata != NULL) { + printf(" - (%i) %s\n", + tok->type, + lwc_string_data(tok->idata)); + } else { + printf(" - (%i)\n", tok->type); + } + } + idx = 2; + + err = css__mq_parse_media_list(strings, tokens, &idx, &media); + if (err != CSS_OK) { + printf("Error parsing mq\n"); + return CSS_OK; + } + + printf("PARSED MQ!!!!!!!\n"); + css__mq_query_destroy(media); + + return CSS_OK; +} + +static css_error css_parse_media_query(lwc_string **strings, + const uint8_t *mq, size_t len) +{ + css_error err; + css_parser *parser; + css_parser_optparams params_quirks = { + .quirks = false, + }; + css_parser_optparams params_handler = { + .event_handler = { + .handler = css_parse_media_query_handle_event, + .pw = strings, + }, + }; + + err = css__parser_create_for_media_query(NULL, + CSS_CHARSET_DEFAULT, &parser); + if (err != CSS_OK) { + return err; + } + + err = css__parser_setopt(parser, CSS_PARSER_QUIRKS, + ¶ms_quirks); + if (err != CSS_OK) { + css__parser_destroy(parser); + return err; + } + + err = css__parser_setopt(parser, CSS_PARSER_EVENT_HANDLER, + ¶ms_handler); + if (err != CSS_OK) { + css__parser_destroy(parser); + return err; + } + + printf("try parsing a mq\n"); + err = css__parser_parse_chunk(parser, + (const uint8_t *)"@media ", + strlen("@media ")); + if (err != CSS_OK && err != CSS_NEEDDATA) { + css__parser_destroy(parser); + return err; + } + + err = css__parser_parse_chunk(parser, mq, len); + if (err != CSS_OK && err != CSS_NEEDDATA) { + css__parser_destroy(parser); + return err; + } + + err = css__parser_completed(parser); + if (err != CSS_OK) { + css__parser_destroy(parser); + return err; + } + + css__parser_destroy(parser); + + return CSS_OK; +} + + /** * Create a stylesheet * @@ -144,6 +251,9 @@ css_error css_stylesheet_create(const css_stylesheet_params *params, free(sheet); return error; } +css_parse_media_query(sheet->propstrings, + (const uint8_t *)"screen and (min-width: 30em)", + strlen("screen and (min-width: 30em)")); sheet->inline_style = params->inline_style; |