For lin and lincats with empty RHSs, there was nothing to point to to make the
edit button (the "%" button) appear in browsers based on Webkit
(Safari, Chrome).
This file exports the same PGF runtime interface as pgf_online.js but calls
the hs2js translation of the PGF runtime library (which is not included
in darcs).
Two smaller objects have been factored out from the Minibar object:
Input and Translations. These have been placed in two separate files:
minibar_input.js and minibar_translations.js. Some common auxiliary functions
have also been moved to a separate file: minibar_support.js
pgf_online.js has been simplified and generalized to support the full
GF Web Service API. The changes are backwards incompatible, unfortunately.
The documentation and minibar.js have been updated accordingly.
The editor now calls the GF server to check the syntax of expressions that
are part of concrete syntax (except for parameter types).
This is currently done by using the cc command of the GF shell, which puts
some unnecessary restricitons on operation definitions...
Factor out functions that interface to the old cloud service (upload.cgi)
from editor.js into cloud.js. Merge changes from editor2.js into editor.js and
factor out functions that interface to gf -server into clouds2.js.
Cloud merging: when sharing grammars between two devices that previously each
had separate grammar directoies on the server, clean up one of the directories
and make it a symbolic link to the other.
This lets the user access the same set of grammars from multiple devices.
Sharing grammars between multiple users is possible but discouraged at the
moment. There is no version handling, so concurrent editing of the same grammar
by different users might result in one user overwriting changes made by
another user. (The same goes for cuncurrent editing on multiple devices by
a single user, of course.)
pgf-service now appears to works with Apache mod_fastcgi (under Mac OS X) in
addition to lighttpd.
One difference appears to be that while lighttpd passes the name of the PGF
file in the SCRIPT_FILENAME variable, Apache passes it in PATH_TRANSLATED.
But perhaps this depends on exactly how the fastcgi service is configured.
The following is what I added to the Apache configuration file to test this:
<Directory /Library/WebServer/Documents/fcgi-bin>
SetHandler fastcgi-script
Options +ExecCGI
</Directory>
Action pgf-service /fcgi-bin/pgf-service
AddHandler pgf-service .pgf
* Use cabal install -ffastcgi to compile the fastcgi server.
* Use cabal install -fcontent to compile the content service (off by default,
currently broken)
* Use both flag to compile both.
This quick fix should make Ctrl-C in the GF shell behave more like it does in
other shells: even if no command is running, Ctrl-C now just gives you a new
prompt instead of terminating the shell.
Work in progress on making the online grammar editor use the new "gf -server"
mode instead of the old upload.cgi script. A first benefit is that the
editor now calls the server to check the syntax of lin & lincat definitions.
(But the links to minibar/gfshell/quiz are not available at the moment.)
The command "gf -server" now starts a simple HTTP server on port 41295,
providing a simple web API to the GF compiler. It currently support the
follwing operations:
* creating new temporary directories for grammar uploads,
* uploading grammars files for use in the GF shell,
* executing GF shell commands, and
* accessing static files.
This means that GF now depends on some additional networking related packages,
but they should be available and easy to install on all platforms. There is
also a new configuration flag "server" in gf.cabal, so GF will be compiled
without support for server mode if the extra packages are unavailable.
Note that running gf -server while connected to the internet can be a security
risk. To prevent unauthorized access to the rest of the system, it is
advisable to run the server in GF_RESTRICTED mode and as a user with suitably
restricted file permissions.
The GF shell welcome message will now include something like
This is GF version 3.2.1-darcs.
Built on darwin/i386 with ghc-7.0, flags: interrupt
where a list of enabled configuration flags are included on the last line.
This is implemented in GF.Infra.BuildInfo by consulting the CPP macros
defined by the respective option in gf.cabal. For this to work,
GF.Infra.BuildInfo obviously has to be updated when new flags are added to
gf.cabal or if the CPP macros are renamed.
(Also, I suspect that if you reconfigure with different flags and rebuild GF
without cleaning first, the BuildInfo module will not be recompiled,
resulting in a misleading welcome message...)
