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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/autofill/browser/form_field.h"
#include <stddef.h>
#include <string>
#include <utility>
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "components/autofill/browser/address_field.h"
#include "components/autofill/browser/autofill_field.h"
#include "components/autofill/browser/autofill_regexes.h"
#include "components/autofill/browser/autofill_scanner.h"
#include "components/autofill/browser/credit_card_field.h"
#include "components/autofill/browser/email_field.h"
#include "components/autofill/browser/field_types.h"
#include "components/autofill/browser/form_structure.h"
#include "components/autofill/browser/name_field.h"
#include "components/autofill/browser/phone_field.h"
#include "ui/base/l10n/l10n_util.h"
namespace autofill {
namespace {
bool IsTextField(const std::string& type) {
return type == "text";
}
bool IsEmailField(const std::string& type) {
return type == "email";
}
bool IsTelephoneField(const std::string& type) {
return type == "tel";
}
bool IsSelectField(const std::string& type) {
return type == "select-one";
}
bool IsCheckable(const AutofillField* field) {
return field->is_checkable;
}
} // namespace
// static
void FormField::ParseFormFields(const std::vector<AutofillField*>& fields,
FieldTypeMap* map) {
// Set up a working copy of the fields to be processed.
std::vector<const AutofillField*> remaining_fields(fields.size());
std::copy(fields.begin(), fields.end(), remaining_fields.begin());
// Ignore checkable fields as they interfere with parsers assuming context.
// Eg., while parsing address, "Is PO box" checkbox after ADDRESS_LINE1
// interferes with correctly understanding ADDRESS_LINE2.
remaining_fields.erase(
std::remove_if(remaining_fields.begin(), remaining_fields.end(),
IsCheckable),
remaining_fields.end());
// Email pass.
ParseFormFieldsPass(EmailField::Parse, &remaining_fields, map);
// Phone pass.
ParseFormFieldsPass(PhoneField::Parse, &remaining_fields, map);
// Address pass.
ParseFormFieldsPass(AddressField::Parse, &remaining_fields, map);
// Credit card pass.
ParseFormFieldsPass(CreditCardField::Parse, &remaining_fields, map);
// Name pass.
ParseFormFieldsPass(NameField::Parse, &remaining_fields, map);
}
// static
bool FormField::ParseField(AutofillScanner* scanner,
const base::string16& pattern,
const AutofillField** match) {
return ParseFieldSpecifics(scanner, pattern, MATCH_DEFAULT, match);
}
// static
bool FormField::ParseFieldSpecifics(AutofillScanner* scanner,
const base::string16& pattern,
int match_type,
const AutofillField** match) {
if (scanner->IsEnd())
return false;
const AutofillField* field = scanner->Cursor();
if ((match_type & MATCH_TEXT) && IsTextField(field->form_control_type))
return MatchAndAdvance(scanner, pattern, match_type, match);
if ((match_type & MATCH_EMAIL) && IsEmailField(field->form_control_type))
return MatchAndAdvance(scanner, pattern, match_type, match);
if ((match_type & MATCH_TELEPHONE) &&
IsTelephoneField(field->form_control_type)) {
return MatchAndAdvance(scanner, pattern, match_type, match);
}
if ((match_type & MATCH_SELECT) && IsSelectField(field->form_control_type))
return MatchAndAdvance(scanner, pattern, match_type, match);
return false;
}
// static
bool FormField::ParseEmptyLabel(AutofillScanner* scanner,
const AutofillField** match) {
return ParseFieldSpecifics(scanner,
ASCIIToUTF16("^$"),
MATCH_LABEL | MATCH_ALL_INPUTS,
match);
}
// static
bool FormField::AddClassification(const AutofillField* field,
AutofillFieldType type,
FieldTypeMap* map) {
// Several fields are optional.
if (!field)
return true;
return map->insert(make_pair(field->unique_name(), type)).second;
}
// static.
bool FormField::MatchAndAdvance(AutofillScanner* scanner,
const base::string16& pattern,
int match_type,
const AutofillField** match) {
const AutofillField* field = scanner->Cursor();
if (FormField::Match(field, pattern, match_type)) {
if (match)
*match = field;
scanner->Advance();
return true;
}
return false;
}
// static
bool FormField::Match(const AutofillField* field,
const base::string16& pattern,
int match_type) {
if ((match_type & FormField::MATCH_LABEL) &&
autofill::MatchesPattern(field->label, pattern)) {
return true;
}
if ((match_type & FormField::MATCH_NAME) &&
autofill::MatchesPattern(field->name, pattern)) {
return true;
}
if ((match_type & FormField::MATCH_VALUE) &&
autofill::MatchesPattern(field->value, pattern)) {
return true;
}
return false;
}
// static
void FormField::ParseFormFieldsPass(ParseFunction parse,
std::vector<const AutofillField*>* fields,
FieldTypeMap* map) {
// Store unmatched fields for further processing by the caller.
std::vector<const AutofillField*> remaining_fields;
AutofillScanner scanner(*fields);
while (!scanner.IsEnd()) {
scoped_ptr<FormField> form_field(parse(&scanner));
if (!form_field.get()) {
remaining_fields.push_back(scanner.Cursor());
scanner.Advance();
continue;
}
// Add entries into the map for each field type found in |form_field|.
bool ok = form_field->ClassifyField(map);
DCHECK(ok);
}
std::swap(*fields, remaining_fields);
}
} // namespace autofill
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