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// Copyright 2013 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Author: dsites@google.com (Dick Sites)
//
#include <stdio.h>
#include <stdlib.h>
#include "../public/compact_lang_det.h"
#include "../public/encodings.h"
#include "compact_lang_det_impl.h"
#include "integral_types.h"
#include "lang_script.h"
namespace CLD2 {
// String is "code_version - data_scrape_date"
//static const char* kDetectLanguageVersion = "V2.0 - 20130715";
// Large-table version for all ~160 languages
// Small-table version for all ~60 languages
// Scan interchange-valid UTF-8 bytes and detect most likely language
Language DetectLanguage(
const char* buffer,
int buffer_length,
bool is_plain_text,
bool* is_reliable) {
bool allow_extended_lang = false;
Language language3[3];
int percent3[3];
double normalized_score3[3];
int text_bytes;
int flags = 0;
Language plus_one = UNKNOWN_LANGUAGE;
const char* tld_hint = "";
int encoding_hint = UNKNOWN_ENCODING;
Language language_hint = UNKNOWN_LANGUAGE;
CLDHints cldhints = {NULL, tld_hint, encoding_hint, language_hint};
Language lang = DetectLanguageSummaryV2(
buffer,
buffer_length,
is_plain_text,
&cldhints,
allow_extended_lang,
flags,
plus_one,
language3,
percent3,
normalized_score3,
NULL,
&text_bytes,
is_reliable);
// Default to English
if (lang == UNKNOWN_LANGUAGE) {
lang = ENGLISH;
}
return lang;
}
// Scan interchange-valid UTF-8 bytes and detect list of top 3 languages.
Language DetectLanguageSummary(
const char* buffer,
int buffer_length,
bool is_plain_text,
Language* language3,
int* percent3,
int* text_bytes,
bool* is_reliable) {
double normalized_score3[3];
bool allow_extended_lang = false;
int flags = 0;
Language plus_one = UNKNOWN_LANGUAGE;
const char* tld_hint = "";
int encoding_hint = UNKNOWN_ENCODING;
Language language_hint = UNKNOWN_LANGUAGE;
CLDHints cldhints = {NULL, tld_hint, encoding_hint, language_hint};
Language lang = DetectLanguageSummaryV2(
buffer,
buffer_length,
is_plain_text,
&cldhints,
allow_extended_lang,
flags,
plus_one,
language3,
percent3,
normalized_score3,
NULL,
text_bytes,
is_reliable);
// Default to English
if (lang == UNKNOWN_LANGUAGE) {
lang = ENGLISH;
}
return lang;
}
// Same as above, with hints supplied
// Scan interchange-valid UTF-8 bytes and detect list of top 3 languages.
Language DetectLanguageSummary(
const char* buffer,
int buffer_length,
bool is_plain_text,
const char* tld_hint, // "id" boosts Indonesian
int encoding_hint, // SJS boosts Japanese
Language language_hint, // ITALIAN boosts it
Language* language3,
int* percent3,
int* text_bytes,
bool* is_reliable) {
double normalized_score3[3];
bool allow_extended_lang = false;
int flags = 0;
Language plus_one = UNKNOWN_LANGUAGE;
CLDHints cldhints = {NULL, tld_hint, encoding_hint, language_hint};
Language lang = DetectLanguageSummaryV2(
buffer,
buffer_length,
is_plain_text,
&cldhints,
allow_extended_lang,
flags,
plus_one,
language3,
percent3,
normalized_score3,
NULL,
text_bytes,
is_reliable);
// Default to English
if (lang == UNKNOWN_LANGUAGE) {
lang = ENGLISH;
}
return lang;
}
// Scan interchange-valid UTF-8 bytes and detect list of top 3 extended
// languages.
// Extended languages are additional Google interface languages and Unicode
// single-language scripts, from ext_lang_enc.h
Language ExtDetectLanguageSummary(
const char* buffer,
int buffer_length,
bool is_plain_text,
Language* language3,
int* percent3,
int* text_bytes,
bool* is_reliable) {
double normalized_score3[3];
bool allow_extended_lang = true;
int flags = 0;
Language plus_one = UNKNOWN_LANGUAGE;
const char* tld_hint = "";
int encoding_hint = UNKNOWN_ENCODING;
Language language_hint = UNKNOWN_LANGUAGE;
CLDHints cldhints = {NULL, tld_hint, encoding_hint, language_hint};
Language lang = DetectLanguageSummaryV2(
buffer,
buffer_length,
is_plain_text,
&cldhints,
allow_extended_lang,
flags,
plus_one,
language3,
percent3,
normalized_score3,
NULL,
text_bytes,
is_reliable);
// Do not default to English
return lang;
}
// Same as above, with hints supplied
// Scan interchange-valid UTF-8 bytes and detect list of top 3 extended
// languages.
// Extended languages are additional Google interface languages and Unicode
// single-language scripts, from ext_lang_enc.h
Language ExtDetectLanguageSummary(
const char* buffer,
int buffer_length,
bool is_plain_text,
const char* tld_hint, // "id" boosts Indonesian
int encoding_hint, // SJS boosts Japanese
Language language_hint, // ITALIAN boosts it
Language* language3,
int* percent3,
int* text_bytes,
bool* is_reliable) {
double normalized_score3[3];
bool allow_extended_lang = true;
int flags = 0;
Language plus_one = UNKNOWN_LANGUAGE;
CLDHints cldhints = {NULL, tld_hint, encoding_hint, language_hint};
Language lang = DetectLanguageSummaryV2(
buffer,
buffer_length,
is_plain_text,
&cldhints,
allow_extended_lang,
flags,
plus_one,
language3,
percent3,
normalized_score3,
NULL,
text_bytes,
is_reliable);
// Do not default to English
return lang;
}
// Same as above, and also returns internal language scores as a ratio to
// normal score for real text in that language. Scores close to 1.0 indicate
// normal text, while scores far away from 1.0 indicate badly-skewed text or
// gibberish
//
Language ExtDetectLanguageSummary(
const char* buffer,
int buffer_length,
bool is_plain_text,
const char* tld_hint, // "id" boosts Indonesian
int encoding_hint, // SJS boosts Japanese
Language language_hint, // ITALIAN boosts it
Language* language3,
int* percent3,
double* normalized_score3,
int* text_bytes,
bool* is_reliable) {
bool allow_extended_lang = true;
int flags = 0;
Language plus_one = UNKNOWN_LANGUAGE;
CLDHints cldhints = {NULL, tld_hint, encoding_hint, language_hint};
Language lang = DetectLanguageSummaryV2(
buffer,
buffer_length,
is_plain_text,
&cldhints,
allow_extended_lang,
flags,
plus_one,
language3,
percent3,
normalized_score3,
NULL,
text_bytes,
is_reliable);
// Do not default to English
return lang;
}
// Use this one.
// Hints are collected into a struct.
// Flags are passed in (normally zero).
//
// Also returns 3 internal language scores as a ratio to
// normal score for real text in that language. Scores close to 1.0 indicate
// normal text, while scores far away from 1.0 indicate badly-skewed text or
// gibberish
//
// Returns a vector of chunks in different languages, so that caller may
// spell-check, translate, or otherwaise process different parts of the input
// buffer in language-dependant ways.
//
Language ExtDetectLanguageSummary(
const char* buffer,
int buffer_length,
bool is_plain_text,
const CLDHints* cld_hints,
int flags,
Language* language3,
int* percent3,
double* normalized_score3,
ResultChunkVector* resultchunkvector,
int* text_bytes,
bool* is_reliable) {
bool allow_extended_lang = true;
Language plus_one = UNKNOWN_LANGUAGE;
Language lang = DetectLanguageSummaryV2(
buffer,
buffer_length,
is_plain_text,
cld_hints,
allow_extended_lang,
flags,
plus_one,
language3,
percent3,
normalized_score3,
resultchunkvector,
text_bytes,
is_reliable);
// Do not default to English
return lang;
}
} // End namespace CLD2
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