[fpc-pascal] From deflate to gzip
Hello, I'm using gzip from Apache to compress my static files (like HTML, CSS, JS etc.), and it worked fine (http://imagebin.org/303024). But, to compress the CGI content, I'm using deflate: var m: TMemoryStream; begin if aeDeflate in BrookGetAcceptEncodingSet(ARequest.AcceptEncoding) then begin m := TMemoryStream.Create; try with TCompressionStream.Create(clMax, m, True) do try Write(AResponse.Content[1], Length(AResponse.Content)); finally Free; end; m.Seek(0, 0); AResponse.SetCustomHeader(fieldContentEncoding, 'deflate'); AResponse.ContentStream := m; AResponse.SendContent; finally m.Free; end; end; end; Now I need to use gzip instead of deflate, like: AResponse.SetCustomHeader(fieldContentEncoding, 'gzip'); So, how to use zstream to (or other) to compress my content stream in gzip mode? I need to create a temporary gzip file (using TGZFileStream class) and load it after from my stream (m), or I can do it directly in stream? Thank you! -- Silvio Clécio My public projects - github.com/silvioprog ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] From deflate to gzip
On Tue, 1 Apr 2014, silvioprog wrote: Hello, I'm using gzip from Apache to compress my static files (like HTML, CSS, JS etc.), and it worked fine (http://imagebin.org/303024). But, to compress the CGI content, I'm using deflate: var m: TMemoryStream; begin if aeDeflate in BrookGetAcceptEncodingSet(ARequest.AcceptEncoding) then begin m := TMemoryStream.Create; try with TCompressionStream.Create(clMax, m, True) do try Write(AResponse.Content[1], Length(AResponse.Content)); finally Free; end; m.Seek(0, 0); AResponse.SetCustomHeader(fieldContentEncoding, 'deflate'); AResponse.ContentStream := m; AResponse.SendContent; finally m.Free; end; end; end; Now I need to use gzip instead of deflate, like: AResponse.SetCustomHeader(fieldContentEncoding, 'gzip'); So, how to use zstream to (or other) to compress my content stream in gzip mode? I need to create a temporary gzip file (using TGZFileStream class) and load it after from my stream (m), or I can do it directly in stream? No, currently you need a file, unless you are willing to duplicate the tgzstream class using an in memory-approach. (that would be a welcome addition, BTW) Michael.___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
[fpc-pascal] minigzip example does not compile (?)
I also have a gzip related issue. I try to test with paszlib/examples/minigzip but the compiler gives : minigzip.pas(73,40) Error: Call by var for arg no. 2 has to match exactly: Got LongInt expected SmallInt FPC 2.6.4 and FPC trunk seem to have identical code here. It is possible I do something stupid. Should I add compiler flags? Regards, Juha ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] minigzip example does not compile (?)
Another note about paszlib sources. There is a spelling mistake in the header comment which is copied to every source file: Pascal tranlastion Juha ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] minigzip example does not compile (?)
On Tue, Apr 1, 2014 at 11:09 AM, Juha Manninen juha.mannine...@gmail.com wrote: Got LongInt expected SmallInt I opened the example program in Lazarus for debugging it. Lazarus project uses mode objfpc by default. Changing 2 variables from Integer to SmalInt solved the compilation problem. IMO the type should be corrected as debugging with Lazarus is often a good idea. Juha ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] minigzip example does not compile (?)
On Tue, 1 Apr 2014, Juha Manninen wrote:
On Tue, Apr 1, 2014 at 11:09 AM, Juha Manninen
juha.mannine...@gmail.com wrote:
Got LongInt expected SmallInt
I opened the example program in Lazarus for debugging it.
Lazarus project uses mode objfpc by default. Changing 2 variables from
Integer to SmalInt solved the compilation problem.
IMO the type should be corrected as debugging with Lazarus is often a good idea.
Or we add a {$mode fpc} to the sources.
Michael.
___
fpc-pascal maillist - fpc-pascal@lists.freepascal.org
http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] minigzip example does not compile (?)
BTW, does anybody know of a Delphi compatible version of this compression lib? The new Unicode Delphis do not need to be supported. What about some other similar Delphi compatible lib? Juha ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] minigzip example does not compile (?)
In our previous episode, Juha Manninen said: BTW, does anybody know of a Delphi compatible version of this compression lib? The new Unicode Delphis do not need to be supported. What about some other similar Delphi compatible lib? Newer delphi's come with a zstream iirc, and contrary to D7(*), you don't need to do anything. (unit zlib, tzcompressionstream and -de variant + helper procedures). I use them for the png compression in my ported fcl-image parts. (*) IIRC, long time ago ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] minigzip example does not compile (?)
On Tue, Apr 1, 2014 at 1:53 PM, Marco van de Voort mar...@stack.nl wrote: Newer delphi's come with a zstream iirc, and contrary to D7(*), you don't need to do anything. (unit zlib, tzcompressionstream and -de variant + helper procedures). I use them for the png compression in my ported fcl-image parts. Yes but we still have Delphi 2007. It only has TCompressionStream but no TZCompressionStream. Maybe we could just add our own metadata wrapper instead of gzip or a zlib wrapper. Well, it does not sound like a clever thing to do. We have used tpabbrevia but it has a bug with very big files (like 6 GB). Its code is not easy to understand and I would rather not start searching the bug. Marco, what was the FPC counterpart for TZCompressionStream in your Delphi-compatible code? FPC does not have TZCompressionStream either. Juha ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] From deflate to gzip
On Tue, Apr 1, 2014 at 4:12 AM, Michael Van Canneyt mich...@freepascal.org wrote: No, currently you need a file, unless you are willing to duplicate the tgzstream class using an in memory-approach. (that would be a welcome addition, BTW) TZipper has similar problem, you cannot write direct to the destination file. Months a go I worked to modify the class to have a Stream writing directly to a zip file. A complicated change, and I don't know if worth the effort because due to Zip format[1], I realize that only streams with support to seek back would be possible. [1] The File Header is written before the compressed stream, and it must contain the compressed file size. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] From deflate to gzip
2014-04-01 4:12 GMT-03:00 Michael Van Canneyt mich...@freepascal.org: [...] No, currently you need a file, unless you are willing to duplicate the tgzstream class using an in memory-approach. (that would be a welcome addition, BTW) Nice, I'll analize the possibility to implement it. -- Silvio Clécio My public projects - github.com/silvioprog ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Free pascal candidate for project of the month
On 26/03/2014 20:44, Marco van de Voort wrote: FYI: Free Pascal is candidate for SF project of the month april, up against strong candidates as subversion for windows (the server, not tortoise) and smplayer. Note that you need a SF login to vote: https://sourceforge.net/p/potm/discussion/vote/thread/c38203c8/ Should we make an announcement on the forum? Not everyone is on the mail list. ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] minigzip example does not compile (?)
In our previous episode, Juha Manninen said: Maybe we could just add our own metadata wrapper instead of gzip or a zlib wrapper. Well, it does not sound like a clever thing to do. We have used tpabbrevia but it has a bug with very big files (like 6 GB). Its code is not easy to understand and I would rather not start searching the bug. Marco, what was the FPC counterpart for TZCompressionStream in your Delphi-compatible code? FPC does not have TZCompressionStream either. Afaik I use the zstream ones. I do know from zipfile component that there are two forms of inflate/deflate (which is also zlib), one with a header before, and one with a header appended (the streaming variant) ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
Re: [fpc-pascal] Free pascal candidate for project of the month
In our previous episode, Martin Frb said: Free Pascal is candidate for SF project of the month april, up against strong candidates as subversion for windows (the server, not tortoise) and smplayer. Note that you need a SF login to vote: https://sourceforge.net/p/potm/discussion/vote/thread/c38203c8/ Should we make an announcement on the forum? Not everyone is on the mail list. Go ahead! ___ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal
