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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/dom_distiller/core/extraction_utils.h"
#include <string>
#include "base/json/json_writer.h"
#include "base/logging.h"
#include "base/notreached.h"
#include "base/strings/string_number_conversions.h"
#include "components/dom_distiller/core/dom_distiller_features.h"
#include "components/grit/components_resources.h"
#include "third_party/dom_distiller_js/dom_distiller.pb.h"
#include "third_party/dom_distiller_js/dom_distiller_json_converter.h"
#include "ui/base/resource/resource_bundle.h"
namespace dom_distiller {
namespace {
const char* kOptionsPlaceholder = "$$OPTIONS";
const char* kMinScorePlaceholder = "$$MIN_SCORE_PLACEHOLDER";
const char* kMinContentLengthPlaceholder = "$$MIN_CONTENT_LENGTH_PLACEHOLDER";
void ReplaceScriptPlaceholder(std::string& script,
const char* placeholder,
std::string& replacement) {
size_t offset = script.find(placeholder);
CHECK_NE(std::string::npos, offset);
CHECK_EQ(std::string::npos, script.find(placeholder, offset + 1));
script.replace(offset, strlen(placeholder), replacement);
}
} // namespace
std::string GetDistillerScriptWithOptions(
const dom_distiller::proto::DomDistillerOptions& options) {
std::string script =
ui::ResourceBundle::GetSharedInstance().LoadDataResourceString(
IDR_DISTILLER_JS);
CHECK(!script.empty());
base::Value options_value =
dom_distiller::proto::json::DomDistillerOptions::WriteToValue(options);
std::string options_json;
if (!base::JSONWriter::Write(options_value, &options_json)) {
NOTREACHED();
}
ReplaceScriptPlaceholder(script, kOptionsPlaceholder, options_json);
return script;
}
std::string GetReadabilityDistillerScript() {
std::string script =
ui::ResourceBundle::GetSharedInstance().LoadDataResourceString(
IDR_READABILITY_DISTILLER_JS);
CHECK(!script.empty());
return script;
}
std::string GetReadabilityTriggeringScript() {
std::string script =
ui::ResourceBundle::GetSharedInstance().LoadDataResourceString(
IDR_READABILITY_TRIGGERING_JS);
CHECK(!script.empty());
std::string min_score =
base::NumberToString(GetReadabilityHeuristicMinScore());
std::string min_content_length =
base::NumberToString(GetReadabilityHeuristicMinContentLength());
ReplaceScriptPlaceholder(script, kMinScorePlaceholder, min_score);
ReplaceScriptPlaceholder(script, kMinContentLengthPlaceholder,
min_content_length);
return script;
}
} // namespace dom_distiller
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