150 lines
3.8 KiB
Ragel
150 lines
3.8 KiB
Ragel
#include <string.h>
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#include "shortcodes.h"
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%%{
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machine shortcode;
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action mark {
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mark = p;
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}
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spc = space*;
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sep = space+;
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path = (alnum | '/' )+;
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name = (alpha+ path?)
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> mark
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%{ sc_list[c_sc].name.start = mark-start;
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sc_list[c_sc].name.len = p-mark;
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sc_list[c_sc].matching = 0;
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};
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argname = alpha+
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> mark
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% {
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sc_list[c_sc].argnames[sc_list[c_sc].argcount].start = mark-start;
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sc_list[c_sc].argnames[sc_list[c_sc].argcount].len = p-mark;
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};
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qvalue = ('"' [^"]* '"')
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> mark
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% {
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sc_list[c_sc].argvals[sc_list[c_sc].argcount].start = mark-start+1;
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sc_list[c_sc].argvals[sc_list[c_sc].argcount].len = p-mark-2;
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sc_list[c_sc].argcount++;
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};
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value = alnum+
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> mark
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% {
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sc_list[c_sc].argvals[sc_list[c_sc].argcount].start = mark-start;
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sc_list[c_sc].argvals[sc_list[c_sc].argcount].len = p-mark;
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sc_list[c_sc].argcount++;
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};
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arg = ((argname '=')? (value|qvalue));
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start_p = '{{%';
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end_p = '%}}';
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start_b = '{{<';
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end_b = '>}}';
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start = start_p | start_b ;
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end = end_p | end_b ;
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shortcode = (start spc name (sep arg)* spc end)
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> {
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sc_list[c_sc].start = p-start-1;
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}
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@ {
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sc_list[c_sc].len = p-start-sc_list[c_sc].start+1;
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data_mark = p+1;
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c_sc++;
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};
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closing_shortcode = (start spc '/' name spc end)
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> {
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// Starting a shortcode, close data (if previous shortcode is opening)
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// If it's closing, then previous text can't be data.
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if (sc_list[c_sc-1].matching == 0) {
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sc_list[c_sc-1].data.start = data_mark-start;
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sc_list[c_sc-1].data.len = p-data_mark-1;
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}
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};
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matched_shortcode = (shortcode any* closing_shortcode)
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@ {
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sc_list[c_sc-1].matching = 1;
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sc_list[c_sc-1].len = p-start-sc_list[c_sc-1].start + 1;
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if (
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sc_list[c_sc-1].name.len != sc_list[c_sc].name.len ||
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strncmp(
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start + sc_list[c_sc-1].name.start,
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start + sc_list[c_sc].name.start,
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sc_list[c_sc-1].name.len) !=0)
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{
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// printf("Mismatched tags!\n");
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// str_copyb(&sc,start + sc_list[c_sc-1].name.start, sc_list[c_sc-1].name.len);
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// printf("opened: %s\n", sc.s);
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// str_copyb(&sc,start + sc_list[c_sc].name.start, sc_list[c_sc].name.len);
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// printf("closed: %s\n", sc.s);
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return NULL;
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}
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// Reuse this shortcode entry for next one
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sc_list[c_sc].name.start = 0;
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};
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main := (any* (shortcode | matched_shortcode))*;
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}%%
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shortcode *parse(char *input) {
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%%write data;
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char *eof, *ts, *te = 0;
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int cs, act = 0;
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char *start = input;
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char *p = input;
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char *pe = p + strlen(input);
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shortcode sc_list[1000];
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int c_sc = 0;
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int sc_start = 0;
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int sc_end = 0;
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char *mark = p;
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char *data_mark = p;
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%% write init;
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%% write exec;
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// for (int i=0; sc_list[i].name.start!=0; i++) {
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// str_copyb(&sc, start + sc_list[i].name.start, sc_list[i].name.len);
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// printf("sc_name: %s (%d)\n", sc.s, sc_list[i].matching );
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// str_copyb(&sc, start + sc_list[i].start, sc_list[i].len);
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// printf("full_sc: %s\n", sc.s);
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// if (sc_list[i].matching) {
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// str_copyb(&sc, start + sc_list[i].data.start, sc_list[i].data.len);
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// printf("sc_data: %s\n", sc.s);
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// }
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// for (int j=0; j< sc_list[i].argcount; j++) {
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// str_copyb(&sc, start + sc_list[i].argnames[j].start, sc_list[i].argnames[j].len);
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// printf("argname %d: %s\n", j, sc.s);
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// str_copyb(&sc, start + sc_list[i].argvals[j].start, sc_list[i].argvals[j].len);
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// printf("argval %d: %s\n", j, sc.s);
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// }
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// }
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// TODO: handle errors
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return sc_list;
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}
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// int main(int argc, char **argv) {
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// parse(
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// "bbb{{% sarasa sar1 sar2 \"sar3\" %}}ccc"
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// "{{< c1 arg2 >}}foobar{{% /c1%}}aaa{{% sarasa name=\"pepe\" %}}");
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// return 0;
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// };
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