diff options
| -rw-r--r-- | lualibs-gzip.lua | 54 | ||||
| -rw-r--r-- | whatsnew.lua | 1 |
2 files changed, 55 insertions, 0 deletions
diff --git a/lualibs-gzip.lua b/lualibs-gzip.lua new file mode 100644 index 0000000..5100e47 --- /dev/null +++ b/lualibs-gzip.lua @@ -0,0 +1,54 @@ +if not modules then modules = { } end modules ['l-gzip'] = { + version = 1.001, + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +if not gzip then + + -- no fallback yet + + return + +end + +local suffix, suffixes = file.suffix, file.suffixes + +function gzip.load(filename) + local f = io.open(filename,"rb") + if not f then + -- invalid file + elseif suffix(filename) == "gz" then + f:close() + local g = gzip.open(filename,"rb") + if g then + local str = g:read("*all") + g:close() + return str + end + else + local str = f:read("*all") + f:close() + return str + end +end + +function gzip.save(filename,data) + if suffix(filename) ~= "gz" then + filename = filename .. ".gz" + end + local f = io.open(filename,"wb") + if f then + local s = zlib.compress(data or "",9,nil,15+16) + f:write(s) + f:close() + return #s + end +end + +function gzip.suffix(filename) + local suffix, extra = suffixes(filename) + local gzipped = extra == "gz" + return suffix, gzipped +end diff --git a/whatsnew.lua b/whatsnew.lua index 30cf837..0c0ca9b 100644 --- a/whatsnew.lua +++ b/whatsnew.lua @@ -46,6 +46,7 @@ local filenames = { "dir", "file", "function", + "gzip", "io", "lpeg", "lua", |