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/*
* json.c - Code for printing JSON output of matches.
*/
#include "types.h"
/*
* Print a match as JSON
*/
static int _json_match(FILE *f, const char *text, match_t *m, int comma, int verbose)
{
if (!verbose) {
if (m->op->op != VM_REF) {
for (match_t *child = m->child; child; child = child->nextsibling) {
comma |= _json_match(f, text, child, comma, verbose);
}
return comma;
}
}
if (comma) fprintf(f, ",\n");
comma = 0;
fprintf(f, "{\"rule\":\"");
for (const char *c = m->op->start; c < m->op->end; c++) {
switch (*c) {
case '"': fprintf(f, "\\\""); break;
case '\\': fprintf(f, "\\\\"); break;
case '\t': fprintf(f, "\\t"); break;
case '\n': fprintf(f, "↵"); break;
default: fprintf(f, "%c", *c); break;
}
}
fprintf(f, "\",\"start\":%ld,\"end\":%ld,\"children\":[",
m->start - text, m->end - text);
for (match_t *child = m->child; child; child = child->nextsibling) {
comma |= _json_match(f, text, child, comma, verbose);
}
fprintf(f, "]}");
return 1;
}
void json_match(FILE *f, const char *text, match_t *m, int verbose)
{
_json_match(f, text, m, 0, verbose);
}
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