diff options
Diffstat (limited to 'ext/misc/sqlar.c')
| -rw-r--r-- | ext/misc/sqlar.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/ext/misc/sqlar.c b/ext/misc/sqlar.c index 17d087593..e812d70c9 100644 --- a/ext/misc/sqlar.c +++ b/ext/misc/sqlar.c @@ -24,6 +24,14 @@ SQLITE_EXTENSION_INIT1 ** If the type of X is SQLITE_BLOB, and compressing that blob using ** zlib utility function compress() yields a smaller blob, return the ** compressed blob. Otherwise, return a copy of X. +** +** SQLar uses the "zlib format" for compressed content. The zlib format +** contains a two-byte identification header and a four-byte checksum at +** the end. This is different from ZIP which uses the raw deflate format. +** +** Future enhancements to SQLar might add support for new compression formats. +** If so, those new formats will be identified by alternative headers in the +** compressed data. */ static void sqlarCompressFunc( sqlite3_context *context, |