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70 lines
2.5 KiB
70 lines
2.5 KiB
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef NLP_SAFT_COMPONENTS_LANG_ID_MOBILE_FB_MODEL_LANG_ID_FROM_FB_H_
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#define NLP_SAFT_COMPONENTS_LANG_ID_MOBILE_FB_MODEL_LANG_ID_FROM_FB_H_
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#include <stddef.h>
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#include <memory>
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#include <string>
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#include "lang_id/common/file/mmap.h"
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#include "lang_id/lang-id.h"
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namespace libtextclassifier3 {
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namespace mobile {
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namespace lang_id {
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// Returns a LangId built using the SAFT model in flatbuffer format from
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// |filename|.
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std::unique_ptr<LangId> GetLangIdFromFlatbufferFile(
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const std::string &filename);
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// Returns a LangId built using the SAFT model in flatbuffer format from
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// given file descriptor.
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std::unique_ptr<LangId> GetLangIdFromFlatbufferFileDescriptor(
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FileDescriptorOrHandle fd);
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// Returns a LangId built using the SAFT model in flatbuffer format from
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// given file descriptor, staring at |offset| and of size |num_bytes|.
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std::unique_ptr<LangId> GetLangIdFromFlatbufferFileDescriptor(
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FileDescriptorOrHandle fd, size_t offset, size_t num_bytes);
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// Returns a LangId built using the SAFT model in flatbuffer format from
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// the |num_bytes| bytes that start at address |data|.
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//
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// IMPORTANT: the model bytes must be alive during the lifetime of the returned
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// LangId. To avoid overhead (e.g., heap allocation), this method does not make
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// a private copy of the model bytes. Avoiding overhead is the main reason we
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// use flatbuffers.
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std::unique_ptr<LangId> GetLangIdFromFlatbufferBytes(const char *data,
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size_t num_bytes);
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// Convenience string-based version of GetLangIdFromFlatbufferBytes.
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//
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// IMPORTANT: |bytes| must be alive during the lifetime of the returned LangId.
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inline std::unique_ptr<LangId> GetLangIdFromFlatbufferBytes(
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const std::string &bytes) {
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return GetLangIdFromFlatbufferBytes(bytes.data(), bytes.size());
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}
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} // namespace lang_id
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} // namespace mobile
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} // namespace nlp_saft
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#endif // NLP_SAFT_COMPONENTS_LANG_ID_MOBILE_FB_MODEL_LANG_ID_FROM_FB_H_
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