43 lines
1.3 KiB
Markdown
43 lines
1.3 KiB
Markdown
```c title="C"
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#include <kreuzberg.h>
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#include <stdio.h>
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#include <string.h>
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/*
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* The C FFI exposes vtable-based registration for OCR backends, post-processors,
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* validators, and embedding backends. There is no public C entry point for
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* registering a custom DocumentExtractor — that must be done from Rust.
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*
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* From C you can still drive extraction for any MIME type the Rust core knows
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* how to handle. The example below feeds JSON bytes through the standard
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* extraction pipeline by passing the explicit MIME type.
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*/
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int main(void) {
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const char *json_payload = "{\"message\":\"Hello, world!\"}";
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const uint8_t *bytes = (const uint8_t *)json_payload;
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uintptr_t bytes_len = (uintptr_t)strlen(json_payload);
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KREUZBERGExtractionResult *result = kreuzberg_extract_bytes_sync(
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bytes,
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bytes_len,
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"application/json",
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NULL
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);
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if (!result) {
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fprintf(stderr, "extraction failed (code %d): %s\n",
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kreuzberg_last_error_code(),
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kreuzberg_last_error_context());
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return 1;
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}
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char *content = kreuzberg_extraction_result_content(result);
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printf("Extracted JSON content: %s\n", content ? content : "(empty)");
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kreuzberg_free_string(content);
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kreuzberg_extraction_result_free(result);
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return 0;
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}
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```
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