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common: add -jf / --json-schema-file flag #12011

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merged 1 commit into from
Apr 30, 2025
Merged

common: add -jf / --json-schema-file flag #12011

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17 changes: 17 additions & 0 deletions common/arg.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1272,6 +1272,23 @@ common_params_context common_params_parser_init(common_params & params, llama_ex
params.sampling.grammar = json_schema_to_grammar(json::parse(value));
}
).set_sparam());
add_opt(common_arg(
{"-jf", "--json-schema-file"}, "FILE",
"File containing a JSON schema to constrain generations (https://json-schema.org/), e.g. `{}` for any JSON object\nFor schemas w/ external $refs, use --grammar + example/json_schema_to_grammar.py instead",
[](common_params & params, const std::string & value) {
std::ifstream file(value);
if (!file) {
throw std::runtime_error(string_format("error: failed to open file '%s'\n", value.c_str()));
}
std::string schema;
std::copy(
std::istreambuf_iterator<char>(file),
std::istreambuf_iterator<char>(),
std::back_inserter(schema)
);
params.sampling.grammar = json_schema_to_grammar(json::parse(schema));
}
).set_sparam());
add_opt(common_arg(
{"--pooling"}, "{none,mean,cls,last,rank}",
"pooling type for embeddings, use model default if unspecified",
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