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167 lines
4.6 KiB
C
167 lines
4.6 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/* acptlang.c */
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/* File implement Accept-Language and Accept-Charset */
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#include "intlpriv.h"
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#include "prefapi.h"
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static char *accept_language = NULL;
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static const char *pref_accept_language = "intl.accept_languages";
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static char *accept_charset = NULL;
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static const char *pref_accept_charset = "intl.accept_charsets";
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PRIVATE void FilterOutHumanReadableText(char* str)
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{
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if(NULL == str)
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return;
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/*
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Currently, we only do this on Window build because
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1. I only know window have this problem
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2. Macintosh should be ok since we do not store this in this
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format on the Mac
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3. I don't know about UNIX for now.
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We probably need to build this for all the platform since
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the preference will be for xp so a window pref could be
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used on Mac and UNIX
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*/
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#if ((defined XP_WIN) || (defined XP_UNIX) || (defined XP_OS2))
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if(strchr(str, '[') != NULL) /* Searching [ to determinate wheather */
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/* This is "Window-Style" AcceptLang Pref */
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{
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int state= 0;
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char *in, *out;
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/*
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State Machine:
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State 0 State 1 State 2
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Hit [ Goto State 1 Copy in (Err!) Emit [,] Goto State 1
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Hit ] Ignore in Goto State 2 ignore In
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Else Ignore in Copy in ignore In
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Sample data:
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in: AAA BBB [abb-a], CC DD [ee-ff]
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state: 0000000001111112222222221111112
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action: abb-a ,ee-ff \0
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Out: abb-a,ee-ff
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*/
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for(state=0, in=out=str; *in!=0; in++)
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{
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switch(state)
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{
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case 1: /* Between [ and ] */
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if(*in == ']') /* hit ] */
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state = 2; /* Change state to 2 */
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else
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*out++ = *in; /* Copy text between [ and ] */
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break;
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case 2: /* Before hit not-first [ */
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if(*in == '[') /* hit the not-first [ */
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{
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state = 1; /* Change state to 1 */
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*out++ = ','; /* Need to copy , */
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}
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break;
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case 0: /* Before hit first [ */
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default:
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if(*in == '[') /* hit first [ */
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state = 1; /* Change state to 1 */
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break;
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}
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}
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*out = '\0'; /* NULL terminate output */
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}
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#endif
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}
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/* callback routine invoked by prefapi when the pref value changes */
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/* According to the comment in mime2fun.c
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Win16 build fails if PR_CALLBACK is declared as static
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So I change it to MODULE_PRIVATE
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*/
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MODULE_PRIVATE int PR_CALLBACK intl_SetAcceptLanguage(const char * newpref, void * data)
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{
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if (accept_language) {
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XP_FREE(accept_language);
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accept_language = NULL;
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}
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PREF_CopyCharPref(pref_accept_language, &accept_language);
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FilterOutHumanReadableText(accept_language);
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return PREF_NOERROR;
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}
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/* INTL_GetAcceptLanguage() */
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/* return the AcceptLanguage from XP Preference */
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/* this should be a C style NULL terminated string */
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PUBLIC char* INTL_GetAcceptLanguage()
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{
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if (accept_language == NULL)
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{
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PREF_CopyCharPref(pref_accept_language, &accept_language);
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if (accept_language)
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PREF_RegisterCallback(pref_accept_language, intl_SetAcceptLanguage, NULL);
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}
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FilterOutHumanReadableText(accept_language);
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return accept_language;
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}
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/* callback routine invoked by prefapi when the pref value changes */
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/* According to the comment in mime2fun.c
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Win16 build fails if PR_CALLBACK is declared as static
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So I change it to MODULE_PRIVATE
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*/
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MODULE_PRIVATE int PR_CALLBACK intl_SetAcceptCharset(const char * newpref, void * data)
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{
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if (accept_charset) {
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XP_FREE(accept_charset);
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accept_charset = NULL;
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}
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PREF_CopyCharPref(pref_accept_charset, &accept_charset);
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FilterOutHumanReadableText(accept_charset);
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return PREF_NOERROR;
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}
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/* INTL_GetAcceptCharset() */
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/* return the AcceptCharset from XP Preference */
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/* this should be a C style NULL terminated string */
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PUBLIC char* INTL_GetAcceptCharset()
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{
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if (accept_charset == NULL)
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{
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PREF_CopyCharPref(pref_accept_charset, &accept_charset);
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if (accept_charset)
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PREF_RegisterCallback(pref_accept_charset, intl_SetAcceptCharset, NULL);
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}
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return accept_charset;
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}
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