ZBoiler - A Quick Way to Boil Projects

The ZBoiler package provides a small script to generate the boilerplate of a project from a simple, high-level feature XML file. An example of such a configuration file is sample-project.xml.

>>> from z3c.boiler import script

>>> def boil(args, showLog=False):
...     try:
...         script.main(args)
...     except SystemExit, err:
...         print 'Exit Code: %i' % err.code
...     else:
...         print 'Error: No proper exit.'

Let’s generate the project using the script. We need to specify the configuration file and a target directory.

>>> import os
>>> featureFile = os.path.join(
...     os.path.dirname(script.__file__), 'sample-project.xml')

>>> boil(['-i', featureFile, '-o', buildPath])
INFO - Creating directory .../z3c.sampleproject
INFO - Creating file .../z3c.sampleproject/bootstrap.py
INFO - Creating file .../z3c.sampleproject/setup.py
INFO - Creating file .../z3c.sampleproject/buildout.cfg
INFO - Creating directory .../z3c.sampleproject/src
INFO - Creating directory .../z3c.sampleproject/src/z3c
INFO - Creating directory .../z3c.sampleproject/src/z3c/sampleproject
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/application.zcml
INFO - Creating directory .../z3c.sampleproject/src/z3c/sampleproject/browser
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/browser/configure.zcml
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/browser/message.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/browser/__init__.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/configure.zcml
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/interfaces.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/index.txt
INFO - Creating directory .../z3c.sampleproject/src/z3c/sampleproject/tests
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/tests/test_doc.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/tests/__init__.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/README.txt
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/message.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/__init__.py
INFO - Creating file .../z3c.sampleproject/src/z3c/__init__.py
INFO - Creating file .../z3c.sampleproject/ZBOILER.txt
INFO - Build finished
Exit Code: 0

Let’s now have a look at the generated directory:

>>> ls(buildPath)
z3c.sampleproject/
  ZBOILER.txt
  bootstrap.py
  buildout.cfg
  setup.py
  src/
    z3c/
      __init__.py
      sampleproject/
        README.txt
        __init__.py
        application.zcml
        configure.zcml
        index.txt
        interfaces.py
        message.py
        browser/
          __init__.py
          configure.zcml
          message.pytests/
          __init__.py
          test_doc.py

When we try to regenerate the project again, we get a failure, since the directory already exists:

>>> boil(['-i', featureFile, '-o', buildPath])
CRITICAL - Failed building package because file .../z3c.sampleproject
           already exists.  Use --force to overwrite it.
Exit Code: 1

We can, however, force the directory to be overwritten as the message mentions:

>>> boil(['-f', '-i', featureFile, '-o', buildPath])
INFO - Creating directory .../z3c.sampleproject
INFO - Creating file .../z3c.sampleproject/bootstrap.py
INFO - Creating file .../z3c.sampleproject/setup.py
INFO - Creating file .../z3c.sampleproject/buildout.cfg
INFO - Creating directory .../z3c.sampleproject/src
INFO - Creating directory .../z3c.sampleproject/src/z3c
INFO - Creating directory .../z3c.sampleproject/src/z3c/sampleproject
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/application.zcml
INFO - Creating directory .../z3c.sampleproject/src/z3c/sampleproject/browser
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/browser/configure.zcml
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/browser/message.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/browser/__init__.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/configure.zcml
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/interfaces.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/index.txt
INFO - Creating directory .../z3c.sampleproject/src/z3c/sampleproject/tests
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/tests/test_doc.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/tests/__init__.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/README.txt
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/message.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/__init__.py
INFO - Creating file .../z3c.sampleproject/src/z3c/__init__.py
INFO - Creating file .../z3c.sampleproject/ZBOILER.txt
INFO - Build finished
Exit Code: 0

If we want less information, we can simply tell the script to be quiet:

>>> boil(['-q', '-f', '-i', featureFile, '-o', buildPath])
Exit Code: 0

Fatal messages are still displayed:

>>> boil(['-q', '-i', featureFile, '-o', buildPath])
CRITICAL - Failed building package because file .../z3c.sampleproject
           already exists.  Use --force to overwrite it.
Exit Code: 1

We can also ask for more information:

>>> boil(['-v', '-f', '-i', featureFile, '-o', buildPath])
DEBUG - Updating <SimpleFileBuilder u'bootstrap.py'>
DEBUG - Updating <PartBuilder u'versions'>
DEBUG - Updating <PartBuilder u'zope3'>
DEBUG - Updating <PartBuilder u'z3c.sampleproject-app'>
DEBUG - Updating <PartBuilder u'z3c.sampleproject'>
DEBUG - Updating <PartBuilder u'database'>
DEBUG - Updating <PartBuilder u'docs'>
DEBUG - Updating <PartBuilder u'python'>
DEBUG - Updating <PartBuilder u'test'>
DEBUG - Updating <PartBuilder u'coverage-test'>
DEBUG - Updating <PartBuilder u'coverage-report'>
DEBUG - Updating <PackageBuilder u'z3c'>
DEBUG - Updating <PackageBuilder u'sampleproject'>
DEBUG - Updating <PackageBuilder u'browser'>
DEBUG - Updating <ModuleBuilder u'message.py'>
DEBUG - Updating <ModuleBuilder u'interfaces.py'>
DEBUG - Updating <PackageBuilder u'tests'>
DEBUG - Updating <SimpleFileBuilder u'test_doc.py'>
DEBUG - Updating <SimpleFileBuilder u'README.txt'>
DEBUG - Updating <ModuleBuilder u'message.py'>
DEBUG - Updating <FeatureDocBuilder u'ZBOILER.txt'>
INFO - Creating directory .../z3c.sampleproject
INFO - Creating file .../z3c.sampleproject/bootstrap.py
INFO - Creating file .../z3c.sampleproject/setup.py
INFO - Creating file .../z3c.sampleproject/buildout.cfg
INFO - Creating directory .../z3c.sampleproject/src
INFO - Creating directory .../z3c.sampleproject/src/z3c
INFO - Creating directory .../z3c.sampleproject/src/z3c/sampleproject
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/application.zcml
INFO - Creating directory .../z3c.sampleproject/src/z3c/sampleproject/browser
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/browser/configure.zcml
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/browser/message.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/browser/__init__.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/configure.zcml
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/interfaces.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/index.txt
INFO - Creating directory .../z3c.sampleproject/src/z3c/sampleproject/tests
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/tests/test_doc.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/tests/__init__.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/README.txt
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/message.py
INFO - Creating file .../z3c.sampleproject/src/z3c/sampleproject/__init__.py
INFO - Creating file .../z3c.sampleproject/src/z3c/__init__.py
INFO - Creating file .../z3c.sampleproject/ZBOILER.txt
INFO - Build finished
Exit Code: 0

It is also possible to use a built in project template as a basis for a new project. To see an available list of built in templates, we use the –list option.

>>> boil(['--list'])
Available Templates:
<BLANKLINE>
  zope-project   "Zope 3 Web Application"
                   Includes all the features you would want for a Zope 3 Web Application.
  command-line   "Command Line Program"
                   Includes all the features you would want for a command line program.
  python-package "Python Package"
                   Just a simple python package with few bells and whistles.
Exit Code: 0

If we try to use a template that does not exist, then we are told to use –list:

>>> boil(['-t','foobar'])
Could not find the template "foobar".
Use --list to see available templates.
Exit Code: 1

Last but not least, we also have some help for the boil script:

>>> boil(['-h'])
Usage: test [options]
<BLANKLINE>
Options:
  -h, --help            show this help message and exit
  -i FILE, --input-file=FILE
                        The file containing the XML definition of the project.
  -t TEMPLATE, --template=TEMPLATE
                        A project template.  Use --list to see available
                        templates
  -l, --list            Show a list of available templates for use with
                        --template
  -k, --interactive     When specified, runs in interactive mode prompting you
                        to enter missing values.
  -o DIR, --output-dir=DIR
                        The directory where project files should be generated.
  -q, --quiet           When specified, no messages are displayed.
  -v, --verbose         When specified, debug information is created.
  -f, --force           Force the package to be generated even overwriting any
                        existing files.
Exit Code: 0

When no arguments are specified, help is also shown:

>>> boil([])
Usage: test [options]
...
Exit Code: 0

CHANGES