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// rhtml.rl written by Mitchell Foral. mitchell<att>caladbolg<dott>net.
/************************* Required for every parser *************************/
#ifndef OHCOUNT_RHTML_PARSER_H
#define OHCOUNT_RHTML_PARSER_H
#include "../parser_macros.h"
// the name of the language
const char *RHTML_LANG = LANG_HTML;
// the languages entities
const char *rhtml_entities[] = {
"space", "comment", "doctype",
"tag", "entity", "any"
};
// constants associated with the entities
enum {
RHTML_SPACE = 0, RHTML_COMMENT, RHTML_DOCTYPE,
RHTML_TAG, RHTML_ENTITY, RHTML_ANY
};
/*****************************************************************************/
#include "css.h"
#include "javascript.h"
#include "ruby.h"
%%{
machine rhtml;
write data;
include common "common.rl";
#EMBED(css)
#EMBED(javascript)
#EMBED(ruby)
# Line counting machine
action rhtml_ccallback {
switch(entity) {
case RHTML_SPACE:
ls
break;
case RHTML_ANY:
code
break;
case INTERNAL_NL:
emb_internal_newline(RHTML_LANG)
break;
case NEWLINE:
emb_newline(RHTML_LANG)
break;
case CHECK_BLANK_ENTRY:
check_blank_entry(RHTML_LANG)
}
}
rhtml_comment := (
newline %{ entity = INTERNAL_NL; } %rhtml_ccallback
|
ws
|
^(space | [\-<]) @comment
|
'<' '%' @{ saw(RUBY_LANG); fcall rhtml_ruby_line; }
|
'<' !'%'
)* :>> '-->' @comment @{ fgoto rhtml_line; };
rhtml_sq_str := (
newline %{ entity = INTERNAL_NL; } %rhtml_ccallback
|
ws
|
[^\r\n\f\t '\\<] @code
|
'\\' nonnewline @code
|
'<' '%' @{ saw(RUBY_LANG); fcall rhtml_ruby_line; }
|
'<' !'%'
)* '\'' @{ fgoto rhtml_line; };
rhtml_dq_str := (
newline %{ entity = INTERNAL_NL; } %rhtml_ccallback
|
ws
|
[^\r\n\f\t "\\<] @code
|
'\\' nonnewline @code
|
'<' '%' @{ saw(RUBY_LANG); fcall rhtml_ruby_line; }
|
'<' !'%'
)* '"' @{ fgoto rhtml_line; };
ws_or_inl = (ws | newline @{ entity = INTERNAL_NL; } %rhtml_ccallback);
rhtml_css_entry = '<' /style/i [^>]+ :>> 'text/css' [^>]+ '>' @code;
rhtml_css_outry = '</' /style/i ws_or_inl* '>' @check_blank_outry @code;
rhtml_css_line := |*
rhtml_css_outry @{ p = ts; fret; };
# unmodified CSS patterns
spaces ${ entity = CSS_SPACE; } => css_ccallback;
css_comment;
css_string;
newline ${ entity = NEWLINE; } => css_ccallback;
^space ${ entity = CSS_ANY; } => css_ccallback;
*|;
rhtml_js_entry = '<' /script/i [^>]+ :>> 'text/javascript' [^>]+ '>' @code;
rhtml_js_outry = '</' /script/i ws_or_inl* '>' @check_blank_outry @code;
rhtml_js_line := |*
rhtml_js_outry @{ p = ts; fret; };
# unmodified Javascript patterns
spaces ${ entity = JS_SPACE; } => js_ccallback;
js_comment;
js_string;
newline ${ entity = NEWLINE; } => js_ccallback;
^space ${ entity = JS_ANY; } => js_ccallback;
*|;
rhtml_ruby_entry = '<%' @code;
rhtml_ruby_outry = '%>' @check_blank_outry @code;
rhtml_ruby_line := |*
rhtml_ruby_outry @{ p = ts; fret; };
# unmodified Ruby patterns
spaces ${ entity = RUBY_SPACE; } => ruby_ccallback;
ruby_comment;
ruby_string;
newline ${ entity = NEWLINE; } => ruby_ccallback;
^space ${ entity = RUBY_ANY; } => ruby_ccallback;
*|;
rhtml_line := |*
rhtml_css_entry @{ entity = CHECK_BLANK_ENTRY; } @rhtml_ccallback
@{ saw(CSS_LANG); } => { fcall rhtml_css_line; };
rhtml_js_entry @{ entity = CHECK_BLANK_ENTRY; } @rhtml_ccallback
@{ saw(JS_LANG); } => { fcall rhtml_js_line; };
rhtml_ruby_entry @{ entity = CHECK_BLANK_ENTRY; } @rhtml_ccallback
@{ saw(RUBY_LANG); } => { fcall rhtml_ruby_line; };
# standard RHTML patterns
spaces ${ entity = RHTML_SPACE; } => rhtml_ccallback;
'<!--' @comment => { fgoto rhtml_comment; };
'\'' @code => { fgoto rhtml_sq_str; };
'"' @code => { fgoto rhtml_dq_str; };
newline ${ entity = NEWLINE; } => rhtml_ccallback;
^space ${ entity = RHTML_ANY; } => rhtml_ccallback;
*|;
# Entity machine
action rhtml_ecallback {
callback(RHTML_LANG, rhtml_entities[entity], cint(ts), cint(te), userdata);
}
rhtml_css_entry_entity = '<' /style/i [^>]+ :>> 'text/css' [^>]+ '>';
rhtml_css_outry_entity = '</' /style/i ws_or_inl* '>';
rhtml_css_entity := |*
rhtml_css_outry_entity @{ fret; };
# unmodified CSS patterns
space+ ${ entity = CSS_SPACE; } => css_ecallback;
css_comment_entity ${ entity = CSS_COMMENT; } => css_ecallback;
# TODO:
^space;
*|;
rhtml_js_entry_entity = '<' /script/i [^>]+ :>> 'text/javascript' [^>]+ '>';
rhtml_js_outry_entity = '</' /script/i ws_or_inl* '>';
rhtml_js_entity := |*
rhtml_js_outry_entity @{ fret; };
# unmodified Javascript patterns
space+ ${ entity = JS_SPACE; } => js_ecallback;
js_comment_entity ${ entity = JS_COMMENT; } => js_ecallback;
# TODO:
^space;
*|;
rhtml_ruby_entry_entity = '<%';
rhtml_ruby_outry_entity = '%>';
rhtml_ruby_entity := |*
rhtml_ruby_outry_entity @{ fret; };
# unmodified Ruby patterns
space+ ${ entity = RUBY_SPACE; } => ruby_ecallback;
ruby_comment_entity ${ entity = RUBY_COMMENT; } => ruby_ecallback;
# TODO:
^space;
*|;
rhtml_comment_entity = '<!--' any* :>> '-->';
rhtml_entity := |*
# TODO: rhtml_ecallback for rhtml_*_{entry,outry}_entity
rhtml_css_entry_entity => { fcall rhtml_css_entity; };
rhtml_js_entry_entity => { fcall rhtml_js_entity; };
rhtml_ruby_entry_entity => { fcall rhtml_ruby_entity; };
# standard RHTML patterns
space+ ${ entity = RHTML_SPACE; } => rhtml_ecallback;
rhtml_comment_entity ${ entity = RHTML_COMMENT; } => rhtml_ecallback;
# TODO:
^space;
*|;
}%%
/************************* Required for every parser *************************/
/* Parses a string buffer with RHTML markup.
*
* @param *buffer The string to parse.
* @param length The length of the string to parse.
* @param count Integer flag specifying whether or not to count lines. If yes,
* uses the Ragel machine optimized for counting. Otherwise uses the Ragel
* machine optimized for returning entity positions.
* @param *callback Callback function. If count is set, callback is called for
* every line of code, comment, or blank with 'lcode', 'lcomment', and
* 'lblank' respectively. Otherwise callback is called for each entity found.
*/
void parse_rhtml(char *buffer, int length, int count,
void (*callback) (const char *lang, const char *entity, int s,
int e, void *udata),
void *userdata
) {
init
const char *seen = 0;
%% write init;
cs = (count) ? rhtml_en_rhtml_line : rhtml_en_rhtml_entity;
%% write exec;
// if no newline at EOF; callback contents of last line
if (count) { process_last_line(RHTML_LANG) }
}
#endif
/*****************************************************************************/
|
