使用 Objective-C 获取 Outlook .msg 文件内容 [英] Getting Outlook .msg file contents with Objective-C

问题描述

我正在为 iPhone 和 iPad 编写一个应用程序，我需要它来显示 Outlook .msg 文件的预览.不出所料，Quick Look 不支持这种文件类型，因此我需要某种方式来解析内容.

I am writing an app for the iPhone and iPad and I need it to show a preview of an Outlook .msg file. Quick Look, unsurprisingly, doesn't support this file type and therefore I need some way of parsing the contents.

有没有办法用 Objective-C 获取 Outlook .msg 文件的内容?我希望能够以 HTML 的形式查看内容(即使我必须在之后稍微操作一下内容)我已经看到了在 Windows 中使用 OLE 流和可能的 XML 解析的引用，但不确定这些在 Objective-C 中的应用.有适用于 iOS 的 .msg 阅读器应用程序，所以我知道这是可能的，但很难做到.

Is there any way of getting the contents of an Outlook .msg file with Objective-C? I want to be able to view the contents as HTML (even if I have to manipulate the contents a bit afterwards) I've seen references made to using OLE streams and possibly XML parsing in Windows but not sure how these apply in Objective-C. There are .msg reader apps out there for iOS, so I know it's possible but struggling to do it.

感谢您的帮助.

推荐答案

Outlook .msg 文件存储为 OLE 复合文档(又名 COM 结构化存储).所以你主要需要一个库来读取这种格式.快速搜索出现了 POLE 和 libgsf.它们分别用 C++ 和 C 编写，但 iPhone 也支持.

Outlook .msg files are stored as OLE compound documents (aka COM stuctured storage). So you mainly need a library to read this format. A quick search turned up POLE and libgsf. They are written in C++ and C, respectively, but that's supported on the iPhone as well.

然后是一些文件格式信息，展示了如何使用复合文档格式来存储电子邮件的不同部分.

Then there's some file format information that shows how the compound document format is used to store the different parts of an email.

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