zimbra2gmailis a compiler written in C language; and as a project available in github.com, it can also be used to learn the steps used in a construction of a simple compiler: a top-down, predictif compiler composed by: a lexical analyser, a sintax analyser and a semantic analyser with code generation
zimbra2gmail is written to have, as its source files, the Zimbra users filters; and as its target, a set of Google GAM commands to create the corresponding gmail users filters.
Given the gmail users filters as text file, we can use a tool like gam to apply this filters to gmail. Without a compiler like zimbra2gmail, this task could be hard work for a single user account; and, me and my colleagues, we have thousands of accounts to migrate from zimbra to gmail.
It is a project that started just before these last days of 2017 (Christmas and New Year), was paused and then re-started in January 2018.
It is now (2018-01-09) ready to use, noting that some Zimbra filter commands are still missing, as they are not used by the first users we are migrating.
Anyone can already use this project just as a learning (or teaching) tool of basic compiler principles, based on a top-down approach with a regular grammar for a preditif parser.
There is a file called compile.sh in this project; it is a Bash script with the commands used to compile this project files with gcc. Your machine should have gcc already installed.
After running compile.sh script, you should have availabe the executable file:
zimbra2gmail
In short, run these commands to compile and see it in action:
./compile.sh
./zimbra2gmail source-test-1
./zimbra2gmail source-test-2
zimbra2gmail is licensed under GNU GPL v3