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Diffstat (limited to 'Docs/01-content')
| -rw-r--r-- | Docs/01-content | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Docs/01-content b/Docs/01-content index c6e77424f..61a19823d 100644 --- a/Docs/01-content +++ b/Docs/01-content @@ -58,6 +58,7 @@ content: Type functions -------------- +[[typefunc]] The type-specific functions for a content are as follows (where 'type' is replaced by something): @@ -104,3 +105,23 @@ is provided by the fetchcache functions, which check the memory cache for a url and fetch, convert, and cache it if not present. The fetch module provides a low-level URL fetching interface. + +Adding support for a new content type +------------------------------------- +Addition of support for new content types is fairly simple and the process is +as follows: + +- Implement, or at least stub out, the new content type handler. See the + <<typefunc,Type Functions>> section above for details of the type handler API. +- Add a type value to the 'content_type' enumeration (content_type.h) +- Add an entry for the new type's private data in the 'data' union within + 'struct content' (content.h) +- Add appropriate mappings in the 'mime_map' table from MIME type strings to + the 'content_type' value created. (content.c) +- Add a textual name for the new content type to 'content_type_name'. This + array is indexed by 'content_type'. (content.c) +- Add an entry for the new content type's handler in the 'handler_map' array. + This array is indexed by 'content_type'. (content.c) + +For examples of content type handlers, consult the image/ directory. The JPEG +handler is fairly self-explanatory.
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