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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/342213636): Remove this and spanify to fix the errors.
#pragma allow_unsafe_buffers
#endif
#include "content/web_test/renderer/web_test_grammar_checker.h"
#include <stddef.h>
#include <algorithm>
#include <array>
#include "base/check.h"
#include "base/strings/string_util.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/web/web_text_checking_result.h"
namespace {
bool IsASCIIAlpha(char ch) {
return base::IsAsciiLower(ch | 0x20);
}
} // namespace
namespace content {
bool WebTestGrammarChecker::CheckGrammarOfString(
const blink::WebString& text,
std::vector<blink::WebTextCheckingResult>* results) {
DCHECK(results);
std::u16string string_text = text.Utf16();
if (std::ranges::none_of(string_text, IsASCIIAlpha)) {
return true;
}
// Find matching grammatical errors from known ones. This function has to
// check all errors because the given text may consist of two or more
// sentences that have grammatical errors.
struct GrammarErrors {
const char* text;
int location;
int length;
};
static const auto kGrammarErrors = std::to_array<GrammarErrors>({
{"I have a issue.", 7, 1},
{"I have an grape.", 7, 2},
{"I have an kiwi.", 7, 2},
{"I have an muscat.", 7, 2},
{"You has the right.", 4, 3},
{"apple orange zz.", 0, 16},
{"apple zz orange.", 0, 16},
{"apple,zz,orange.", 0, 16},
{"orange,zz,apple.", 0, 16},
{"the the adlj adaasj sdklj. there there", 4, 3},
{"the the adlj adaasj sdklj. there there", 33, 5},
{"zz apple orange.", 0, 16},
});
for (size_t i = 0; i < std::size(kGrammarErrors); ++i) {
size_t offset = 0;
std::u16string error(
kGrammarErrors[i].text,
kGrammarErrors[i].text + strlen(kGrammarErrors[i].text));
while ((offset = string_text.find(error, offset)) != std::u16string::npos) {
results->push_back(blink::WebTextCheckingResult(
blink::kWebTextDecorationTypeGrammar,
offset + kGrammarErrors[i].location, kGrammarErrors[i].length));
offset += kGrammarErrors[i].length;
}
}
return false;
}
} // namespace content
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