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/* MAPIStoreMIME.m - this file is part of SOGo
*
* Copyright (C) 2011-2012 Inverse inc
*
* Author: Wolfgang Sourdeau <wsourdeau@inverse.ca>
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#import <Foundation/NSData.h>
#import <Foundation/NSDictionary.h>
#import <Foundation/NSFileHandle.h>
#import <Foundation/NSString.h>
#import "MAPIStoreMIME.h"
/* Seems common to all distros ? */
#define MAPIStoreMIMEFile @"/etc/mime.types"
@implementation MAPIStoreMIME
+ (id) sharedMAPIStoreMIME
{
static MAPIStoreMIME *sharedInstance = nil;
if (!sharedInstance)
sharedInstance = [self new];
return sharedInstance;
}
- (void) _parseLine: (const char *) line
withLength: (NSUInteger) length
{
NSUInteger count = 0, lastWord = 0;
NSString *mimeType = nil, *word;
NSData *wordData;
BOOL comment = NO;
while (count < length && !comment)
{
while (count < length
&& (line[count] == ' ' || line[count] == '\t'))
count++;
lastWord = count;
while (count < length
&& line[count] != ' ' && line[count] != '\t'
&& !comment)
{
if (line[count] == '#')
comment = YES;
else
count++;
}
if (count > lastWord)
{
wordData = [NSData dataWithBytes: line + lastWord
length: count - lastWord];
word = [[NSString alloc] initWithData: wordData
encoding: NSASCIIStringEncoding];
if (word)
{
if (mimeType)
{
[mimeDict setObject: mimeType forKey: word];
[word release];
}
else
mimeType = word;
}
}
}
[mimeType release];
}
- (void) _parseContent: (NSData *) content
{
const char *data;
NSUInteger lineStart = 0, bytesRead = 0, max;
data = [content bytes];
max = [content length];
bytesRead = 0;
lineStart = 0;
while (bytesRead < max)
{
if (data[bytesRead] == '\n')
{
[self _parseLine: data + lineStart withLength: bytesRead - lineStart];
lineStart = bytesRead + 1;
}
else if (data[bytesRead] == '\r')
{
[self _parseLine: data + lineStart withLength: bytesRead - lineStart];
if (bytesRead < (max - 1) && data[bytesRead] == '\n')
lineStart = bytesRead + 2;
else
lineStart = bytesRead + 1;
}
bytesRead++;
}
if (bytesRead > (lineStart + 1))
[self _parseLine: data + lineStart withLength: bytesRead - lineStart];
}
- (void) _readMIMEFile
{
NSFileHandle *inH;
NSData *content;
inH = [NSFileHandle fileHandleForReadingAtPath: MAPIStoreMIMEFile];
content = [inH readDataToEndOfFile];
[self _parseContent: content];
}
- (id) init
{
if ((self = [super init]))
{
mimeDict = [NSMutableDictionary new];
[self _readMIMEFile];
}
return self;
}
- (void) dealloc
{
[mimeDict release];
[super dealloc];
}
- (NSString *) mimeTypeForExtension: (NSString *) extension
{
return [mimeDict objectForKey: [extension lowercaseString]];
}
@end
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