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gguf : add gguf_find_key (#2438)
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* gguf.cpp : find key example

* ggml.h : add gguf_find_key

* ggml.c : add gguf_find_key
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klosax authored Jul 28, 2023
1 parent 11ef380 commit 3492f84
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14 changes: 14 additions & 0 deletions examples/gguf/gguf.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -253,6 +253,20 @@ bool gguf_ex_read_0(const std::string & fname) {
}
}

// find kv string
{
char findkey[32];
sprintf(findkey, "some.parameter.string");

int keyidx = gguf_find_key(ctx, findkey);
if (keyidx == -1) {
fprintf(stdout, "%s: find key: %s not found.\n", __func__, findkey);
} else {
const char * key_value = gguf_get_val_str(ctx, keyidx);
fprintf(stdout, "%s: find key: %s found, kv[%d] value = %s\n", __func__, findkey, keyidx, key_value);
}
}

// tensor info
{
const int n_tensors = gguf_get_n_tensors(ctx);
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15 changes: 15 additions & 0 deletions ggml.c
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Expand Up @@ -18745,6 +18745,21 @@ int gguf_get_n_kv(struct gguf_context * ctx) {
return ctx->header.n_kv;
}

int gguf_find_key(struct gguf_context * ctx, const char * key) {
// return -1 if key not found
const int n_kv = gguf_get_n_kv(ctx);
int keyfound = -1;

for (int i = 0; i < n_kv; ++i) {
if (strcmp(key, gguf_get_key(ctx, i)) == 0) {
keyfound = i;
break;
}
}

return keyfound;
}

const char * gguf_get_key(struct gguf_context * ctx, int i) {
return ctx->header.kv[i].key.data;
}
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1 change: 1 addition & 0 deletions ggml.h
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Expand Up @@ -1653,6 +1653,7 @@ extern "C" {
GGML_API void * gguf_get_data (struct gguf_context * ctx);

GGML_API int gguf_get_n_kv(struct gguf_context * ctx);
GGML_API int gguf_find_key(struct gguf_context * ctx, const char * key);
GGML_API const char * gguf_get_key (struct gguf_context * ctx, int i);
GGML_API void gguf_get_val (struct gguf_context * ctx, int i, void * val);

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