CTMIME_HtmlPart.m

/*
 * MailCore
 *
 * Copyright (C) 2012 - Matt Ronge
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the MailCore project nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#import "CTMIME_HtmlPart.h"

#import <libetpan/libetpan.h>
#import "MailCoreTypes.h"

@implementation CTMIME_HtmlPart

+ (id)mimeTextPartWithString:(NSString *)str {
    return [[[CTMIME_HtmlPart alloc] initWithString:str] autorelease];
}

- (id)initWithString:(NSString *)string {
    self = [super init];
    if (self) {
        [self setString:string];
    }
    return self;
}

- (id)content {
    if (mMimeFields != NULL) {
        // We are decoding from an existing msg so read
        // the charset and convert from that to UTF-8
        char *converted;
        size_t converted_len;

        char *source_charset = mMimeFields->fld_content_charset;
        if (source_charset == NULL) {
            source_charset = DEST_CHARSET;
        }

        int r = charconv_buffer(DEST_CHARSET, source_charset,
                                self.data.bytes, self.data.length,
                                &converted, &converted_len);
        NSString *str = @"";
        if (r == MAIL_CHARCONV_NO_ERROR) {
            NSData *newData = [NSData dataWithBytes:converted length:converted_len];
            str = [[[NSString alloc] initWithData:newData encoding:NSUTF8StringEncoding] autorelease];
        }
        charconv_buffer_free(converted);
        return str;
    } else {
        // Don't have a charset available so treat data as UTF-8
        // This will happen when we are creating a msg and not decoding
        // an existing one
        return [[[NSString alloc] initWithData:self.data encoding:NSUTF8StringEncoding] autorelease];
    }
}

- (void)setString:(NSString *)str {
    self.data = [str dataUsingEncoding:NSUTF8StringEncoding];
    // The data is all local, so we don't want it to do any fetching
    self.fetched = YES;
}

- (struct mailmime *)buildMIMEStruct {
    struct mailmime_fields *mime_fields;
    struct mailmime *mime_sub;
    struct mailmime_content *content;
    struct mailmime_parameter *param;
    struct mailmime_disposition *disposition;
    struct mailmime_mechanism *encoding;
    
    int r;

    /* text/html part */
    encoding = mailmime_mechanism_new(MAILMIME_MECHANISM_QUOTED_PRINTABLE, NULL);
    disposition = mailmime_disposition_new_with_data(MAILMIME_DISPOSITION_TYPE_INLINE, NULL, NULL, NULL, NULL, -1);
    mime_fields = mailmime_fields_new_with_data(encoding, NULL, NULL, disposition, NULL);
    
    
    content = mailmime_content_new_with_str("text/html");
    param = mailmime_parameter_new(strdup("charset"), strdup(DEST_CHARSET));
    r = clist_append(content->ct_parameters, param);
    mime_sub = mailmime_new_empty(content, mime_fields);
    assert(mime_sub != NULL);
    NSString *str = [self content];
    NSData * data = [str dataUsingEncoding:NSUTF8StringEncoding];
    r = mailmime_set_body_text(mime_sub, strdup([data bytes]), [data length]);
    return mime_sub;
}

@end