77 lines
1.7 KiB
Markdown
77 lines
1.7 KiB
Markdown
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```c title="C"
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#include <kreuzberg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/*
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* Minimal Validator skeleton: implements the required `validate` function
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* and the optional `priority` and `should_validate` hooks via the C vtable.
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*/
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static char *dup_cstr(const char *s) {
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size_t len = strlen(s);
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char *out = (char *)malloc(len + 1);
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if (out) {
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memcpy(out, s, len + 1);
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}
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return out;
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}
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static int32_t validate_fn(
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const void *user_data,
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const char *result,
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const char *config,
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char **out_error
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) {
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(void)user_data;
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(void)config;
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/* Reject results whose serialised form contains a clearly forbidden token. */
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if (strstr(result, "FORBIDDEN") != NULL) {
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*out_error = dup_cstr("Content contains forbidden token");
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return 1;
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}
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return 0;
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}
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static int32_t should_validate_fn(
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const void *user_data,
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const char *result,
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const char *config
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) {
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(void)user_data;
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(void)result;
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(void)config;
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return 1; /* always run */
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}
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static int32_t priority_fn(const void *user_data) {
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(void)user_data;
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return 50;
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}
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int main(void) {
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KREUZBERGKreuzbergValidatorVTable vtable = {0};
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vtable.validate = validate_fn;
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vtable.should_validate = should_validate_fn;
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vtable.priority = priority_fn;
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char *err = NULL;
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int32_t rc = kreuzberg_register_validator(
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"forbidden-token-validator",
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vtable,
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NULL,
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&err
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);
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if (rc != 0) {
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fprintf(stderr, "register validator failed: %s\n", err ? err : "(no detail)");
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kreuzberg_free_string(err);
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return 1;
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}
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printf("forbidden-token-validator registered\n");
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return 0;
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}
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```
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