gecko-dev/intl/locale/nsLocaleService.cpp
Richard Newman 1c0ca6a690 Bug 1095298 - Ignore 'C' locale when initializing nsLocaleService on Android. r=emk
On Android Lollipop, our setlocale call returns "C", rather than the null it returns on earlier Android versions.

This impacts locale detection, causing devices to always appear to be in en-US.

This patch conditionally ignores "C" if MOZ_WIDGET_ANDROID is set.
2014-11-12 08:52:19 -08:00

390 lines
10 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifdef MOZ_WIDGET_QT
#include <QString>
#include <QtCore/QLocale>
#endif
#include "nsCOMPtr.h"
#include "nsAutoPtr.h"
#include "nsILocale.h"
#include "nsILocaleService.h"
#include "nsLocale.h"
#include "nsCRT.h"
#include "prprf.h"
#include "nsTArray.h"
#include "nsString.h"
#include <ctype.h>
#if defined(XP_WIN)
# include "nsWin32Locale.h"
#elif defined(XP_MACOSX)
# include <Carbon/Carbon.h>
#elif defined(XP_UNIX)
# include <locale.h>
# include <stdlib.h>
# include "nsPosixLocale.h"
#endif
//
// implementation constants
const int LocaleListLength = 6;
const char* LocaleList[LocaleListLength] =
{
NSILOCALE_COLLATE,
NSILOCALE_CTYPE,
NSILOCALE_MONETARY,
NSILOCALE_NUMERIC,
NSILOCALE_TIME,
NSILOCALE_MESSAGE
};
#define NSILOCALE_MAX_ACCEPT_LANGUAGE 16
#define NSILOCALE_MAX_ACCEPT_LENGTH 18
#if (defined(XP_UNIX) && !defined(XP_MACOSX))
static int posix_locale_category[LocaleListLength] =
{
LC_COLLATE,
LC_CTYPE,
LC_MONETARY,
LC_NUMERIC,
LC_TIME,
#ifdef HAVE_I18N_LC_MESSAGES
LC_MESSAGES
#else
LC_CTYPE
#endif
};
#endif
//
// nsILocaleService implementation
//
class nsLocaleService: public nsILocaleService {
public:
//
// nsISupports
//
NS_DECL_THREADSAFE_ISUPPORTS
//
// nsILocaleService
//
NS_DECL_NSILOCALESERVICE
nsLocaleService(void);
protected:
nsresult SetSystemLocale(void);
nsresult SetApplicationLocale(void);
nsCOMPtr<nsILocale> mSystemLocale;
nsCOMPtr<nsILocale> mApplicationLocale;
virtual ~nsLocaleService(void);
};
//
// nsLocaleService methods
//
nsLocaleService::nsLocaleService(void)
{
#ifdef XP_WIN
nsAutoString xpLocale;
//
// get the system LCID
//
LCID win_lcid = GetSystemDefaultLCID();
NS_ENSURE_TRUE_VOID(win_lcid);
nsWin32Locale::GetXPLocale(win_lcid, xpLocale);
nsresult rv = NewLocale(xpLocale, getter_AddRefs(mSystemLocale));
NS_ENSURE_SUCCESS_VOID(rv);
//
// get the application LCID
//
win_lcid = GetUserDefaultLCID();
NS_ENSURE_TRUE_VOID(win_lcid);
nsWin32Locale::GetXPLocale(win_lcid, xpLocale);
rv = NewLocale(xpLocale, getter_AddRefs(mApplicationLocale));
NS_ENSURE_SUCCESS_VOID(rv);
#endif
#if defined(XP_UNIX) && !defined(XP_MACOSX)
nsRefPtr<nsLocale> resultLocale(new nsLocale());
NS_ENSURE_TRUE_VOID(resultLocale);
#ifdef MOZ_WIDGET_QT
const char* lang = QLocale::system().name().toUtf8();
#else
// Get system configuration
const char* lang = getenv("LANG");
#endif
nsAutoString xpLocale, platformLocale;
nsAutoString category, category_platform;
int i;
for( i = 0; i < LocaleListLength; i++ ) {
nsresult result;
// setlocale( , "") evaluates LC_* and LANG
char* lc_temp = setlocale(posix_locale_category[i], "");
CopyASCIItoUTF16(LocaleList[i], category);
category_platform = category;
category_platform.AppendLiteral("##PLATFORM");
bool lc_temp_valid = lc_temp != nullptr;
#if defined(MOZ_WIDGET_ANDROID)
// Treat the "C" env as nothing useful. See Bug 1095298.
lc_temp_valid = lc_temp_valid && strcmp(lc_temp, "C") != 0;
#endif
if (lc_temp_valid) {
result = nsPosixLocale::GetXPLocale(lc_temp, xpLocale);
CopyASCIItoUTF16(lc_temp, platformLocale);
} else {
if ( lang == nullptr ) {
platformLocale.AssignLiteral("en_US");
result = nsPosixLocale::GetXPLocale("en-US", xpLocale);
} else {
CopyASCIItoUTF16(lang, platformLocale);
result = nsPosixLocale::GetXPLocale(lang, xpLocale);
}
}
if (NS_FAILED(result)) {
return;
}
resultLocale->AddCategory(category, xpLocale);
resultLocale->AddCategory(category_platform, platformLocale);
}
mSystemLocale = do_QueryInterface(resultLocale);
mApplicationLocale = do_QueryInterface(resultLocale);
#endif // XP_UNIX
#ifdef XP_MACOSX
// Get string representation of user's current locale
CFLocaleRef userLocaleRef = ::CFLocaleCopyCurrent();
CFStringRef userLocaleStr = ::CFLocaleGetIdentifier(userLocaleRef);
::CFRetain(userLocaleStr);
nsAutoTArray<UniChar, 32> buffer;
int size = ::CFStringGetLength(userLocaleStr);
buffer.SetLength(size + 1);
CFRange range = ::CFRangeMake(0, size);
::CFStringGetCharacters(userLocaleStr, range, buffer.Elements());
buffer[size] = 0;
// Convert the locale string to the format that Mozilla expects
nsAutoString xpLocale(reinterpret_cast<char16_t*>(buffer.Elements()));
xpLocale.ReplaceChar('_', '-');
nsresult rv = NewLocale(xpLocale, getter_AddRefs(mSystemLocale));
if (NS_SUCCEEDED(rv)) {
mApplicationLocale = mSystemLocale;
}
::CFRelease(userLocaleStr);
::CFRelease(userLocaleRef);
NS_ASSERTION(mApplicationLocale, "Failed to create locale objects");
#endif // XP_MACOSX
}
nsLocaleService::~nsLocaleService(void)
{
}
NS_IMPL_ISUPPORTS(nsLocaleService, nsILocaleService)
NS_IMETHODIMP
nsLocaleService::NewLocale(const nsAString &aLocale, nsILocale **_retval)
{
nsresult result;
*_retval = nullptr;
nsRefPtr<nsLocale> resultLocale(new nsLocale());
if (!resultLocale) return NS_ERROR_OUT_OF_MEMORY;
for (int32_t i = 0; i < LocaleListLength; i++) {
NS_ConvertASCIItoUTF16 category(LocaleList[i]);
result = resultLocale->AddCategory(category, aLocale);
if (NS_FAILED(result)) return result;
#if defined(XP_UNIX) && !defined(XP_MACOSX)
category.AppendLiteral("##PLATFORM");
result = resultLocale->AddCategory(category, aLocale);
if (NS_FAILED(result)) return result;
#endif
}
NS_ADDREF(*_retval = resultLocale);
return NS_OK;
}
NS_IMETHODIMP
nsLocaleService::GetSystemLocale(nsILocale **_retval)
{
if (mSystemLocale) {
NS_ADDREF(*_retval = mSystemLocale);
return NS_OK;
}
*_retval = (nsILocale*)nullptr;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsLocaleService::GetApplicationLocale(nsILocale **_retval)
{
if (mApplicationLocale) {
NS_ADDREF(*_retval = mApplicationLocale);
return NS_OK;
}
*_retval=(nsILocale*)nullptr;
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsLocaleService::GetLocaleFromAcceptLanguage(const char *acceptLanguage, nsILocale **_retval)
{
char* cPtr;
char* cPtr1;
char* cPtr2;
int i;
int j;
int countLang = 0;
char acceptLanguageList[NSILOCALE_MAX_ACCEPT_LANGUAGE][NSILOCALE_MAX_ACCEPT_LENGTH];
nsresult result;
nsAutoArrayPtr<char> input(new char[strlen(acceptLanguage)+1]);
strcpy(input, acceptLanguage);
cPtr1 = input-1;
cPtr2 = input;
/* put in standard form */
while (*(++cPtr1)) {
if (isalpha(*cPtr1)) *cPtr2++ = tolower(*cPtr1); /* force lower case */
else if (isspace(*cPtr1)) ; /* ignore any space */
else if (*cPtr1=='-') *cPtr2++ = '_'; /* "-" -> "_" */
else if (*cPtr1=='*') ; /* ignore "*" */
else *cPtr2++ = *cPtr1; /* else unchanged */
}
*cPtr2 = '\0';
countLang = 0;
if (strchr(input,';')) {
/* deal with the quality values */
float qvalue[NSILOCALE_MAX_ACCEPT_LANGUAGE];
float qSwap;
float bias = 0.0f;
char* ptrLanguage[NSILOCALE_MAX_ACCEPT_LANGUAGE];
char* ptrSwap;
cPtr = nsCRT::strtok(input,",",&cPtr2);
while (cPtr) {
qvalue[countLang] = 1.0f;
/* add extra parens to get rid of warning */
if ((cPtr1 = strchr(cPtr,';')) != nullptr) {
PR_sscanf(cPtr1,";q=%f",&qvalue[countLang]);
*cPtr1 = '\0';
}
if (strlen(cPtr)<NSILOCALE_MAX_ACCEPT_LANGUAGE) { /* ignore if too long */
qvalue[countLang] -= (bias += 0.0001f); /* to insure original order */
ptrLanguage[countLang++] = cPtr;
if (countLang>=NSILOCALE_MAX_ACCEPT_LANGUAGE) break; /* quit if too many */
}
cPtr = nsCRT::strtok(cPtr2,",",&cPtr2);
}
/* sort according to decending qvalue */
/* not a very good algorithm, but count is not likely large */
for ( i=0 ; i<countLang-1 ; i++ ) {
for ( j=i+1 ; j<countLang ; j++ ) {
if (qvalue[i]<qvalue[j]) {
qSwap = qvalue[i];
qvalue[i] = qvalue[j];
qvalue[j] = qSwap;
ptrSwap = ptrLanguage[i];
ptrLanguage[i] = ptrLanguage[j];
ptrLanguage[j] = ptrSwap;
}
}
}
for ( i=0 ; i<countLang ; i++ ) {
PL_strncpyz(acceptLanguageList[i],ptrLanguage[i],NSILOCALE_MAX_ACCEPT_LENGTH);
}
} else {
/* simple case: no quality values */
cPtr = nsCRT::strtok(input,",",&cPtr2);
while (cPtr) {
if (strlen(cPtr)<NSILOCALE_MAX_ACCEPT_LENGTH) { /* ignore if too long */
PL_strncpyz(acceptLanguageList[countLang++],cPtr,NSILOCALE_MAX_ACCEPT_LENGTH);
if (countLang>=NSILOCALE_MAX_ACCEPT_LENGTH) break; /* quit if too many */
}
cPtr = nsCRT::strtok(cPtr2,",",&cPtr2);
}
}
//
// now create the locale
//
result = NS_ERROR_FAILURE;
if (countLang>0) {
result = NewLocale(NS_ConvertASCIItoUTF16(acceptLanguageList[0]), _retval);
}
//
// clean up
//
return result;
}
nsresult
nsLocaleService::GetLocaleComponentForUserAgent(nsAString& retval)
{
nsCOMPtr<nsILocale> system_locale;
nsresult result;
result = GetSystemLocale(getter_AddRefs(system_locale));
if (NS_SUCCEEDED(result))
{
result = system_locale->
GetCategory(NS_LITERAL_STRING(NSILOCALE_MESSAGE), retval);
return result;
}
return result;
}
nsresult
NS_NewLocaleService(nsILocaleService** result)
{
if(!result)
return NS_ERROR_NULL_POINTER;
*result = new nsLocaleService();
if (! *result)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(*result);
return NS_OK;
}