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Diffstat (limited to '')
-rw-r--r-- | comm/mailnews/mime/src/mimetext.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/comm/mailnews/mime/src/mimetext.h b/comm/mailnews/mime/src/mimetext.h new file mode 100644 index 0000000000..d3a7a29677 --- /dev/null +++ b/comm/mailnews/mime/src/mimetext.h @@ -0,0 +1,79 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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/. */ + +#ifndef _MIMETEXT_H_ +#define _MIMETEXT_H_ + +#include "mimeleaf.h" + +/* The MimeInlineText class is the superclass of all handlers for the + MIME text/ content types (which convert various text formats to HTML, + in one form or another.) + + It provides two services: + + = if ROT13 decoding is desired, the text will be rotated before + the `parse_line' method it called; + + = text will be converted from the message's charset to the "target" + charset before the `parse_line' method is called. + + The contract with charset-conversion is that the converted data will + be such that one may interpret any octets (8-bit bytes) in the data + which are in the range of the ASCII characters (0-127) as ASCII + characters. It is explicitly legal, for example, to scan through + the string for "<" and replace it with "<", and to search for things + that look like URLs and to wrap them with interesting HTML tags. + + The charset to which we convert will probably be UTF-8 (an encoding of + the Unicode character set, with the feature that all octets with the + high bit off have the same interpretations as ASCII.) + + #### NOTE: if it turns out that we use JIS (ISO-2022-JP) as the target + encoding, then this is not quite true; it is safe to search for the + low ASCII values (under hex 0x40, octal 0100, which is '@') but it + is NOT safe to search for values higher than that -- they may be + being used as the subsequent bytes in a multi-byte escape sequence. + It's a nice coincidence that HTML's critical characters ("<", ">", + and "&") have values under 0x40... + */ + +typedef struct MimeInlineTextClass MimeInlineTextClass; +typedef struct MimeInlineText MimeInlineText; + +struct MimeInlineTextClass { + MimeLeafClass leaf; + int (*rot13_line)(MimeObject* obj, char* line, int32_t length); + int (*convert_line_charset)(MimeObject* obj, char* line, int32_t length); + int (*initialize_charset)(MimeObject* obj); +}; + +extern MimeInlineTextClass mimeInlineTextClass; + +#define DAM_MAX_BUFFER_SIZE 8 * 1024 +#define DAM_MAX_LINES 1024 + +struct MimeInlineText { + MimeLeaf leaf; /* superclass variables */ + char* charset; /* The charset from the content-type of this + object, or the caller-specified overrides + or defaults. */ + bool charsetOverridable; + bool needUpdateMsgWinCharset; + char* cbuffer; /* Buffer used for charset conversion. */ + int32_t cbuffer_size; + + bool inputAutodetect; + bool initializeCharset; + int32_t lastLineInDam; + int32_t curDamOffset; + char* lineDamBuffer; + char** lineDamPtrs; +}; + +#define MimeInlineTextClassInitializer(ITYPE, CSUPER) \ + { MimeLeafClassInitializer(ITYPE, CSUPER) } + +#endif /* _MIMETEXT_H_ */ |