Skip to main content

General purpose configuration parser builder

Project description

# configbuilder
General purpose configuration parser builder for python.
You can create your own configuration parser only with ```Configuration Template```

```configbuilder``` offers you the easiest way to define a configuration file for your
application project written in python.

## Synopsis
Data serialization language such as YAML or JSON is a good choice to write a
configuration files for a application.
The code for parsing and validating the configuration file have to be re-written
even for a simple change such as attribute name modification for new application.
```configbuilder``` offers you an easy way to define a configuration file format with
minimum code changing. It is even possible to define a configuration format without
any developing codes. Instead of parsing code, you can define a configuration with
a template file written in data serialization language.

## Usage
### Configuration Template
You can define the format of configuration format with writing a configuration template.
Loading the configuration template in your application code, you can simply parse a
user configuration file also with the validation.
This is the example of a configuration template written in YAML.

ConfigKey1: String
ConfigKey2: Boolean
ConfigKey3: Integer
ConfigKey4: IP
ConfigKey5: FilePath
ConfigKey6:
ConfigKey6Name: # indicates the name of this subconfig
SubConfigKey1: List of DirectoryPath
SubConfigKey2: String
SubConfigKey3:
SubConfigKey3Name:
SubSubConfigKey1: List of String
SubSubConfigKey2: Integer
SubSubConfigKey3: IP
SubConfigKey3Name:
SubSubConfigKey4: Config In SubConfigKey3
ConfigKey7:
-
SubConfigKey1: String
SubConfigKey2: Integer
SubConfigKey3: NotSupportingType

An Attribute in configuration template consists of Key:Type pair. A key without a type
intends that there is a sub-config for the key.
There are built-in types to validate values. The types are case-insensitive.

#### Built-in types
* String: Any type of string is accepted, and automatically strip the string.
* Boolean: True or False
* Integer: Integers
* IP: IP address
* Path: Any path regardless of the existence
* FilePath: Existing file path
* DirectoryPath: Existing directory path
* List: Any list regardless of the type of the item

#### Compound type
* List of ```Built-in type```: The value should be a list, and each item is
validated with the specified built-in type.
* Config In ```Other Configuration Key```: The value is the name of other configuration.
This type converts value into the configuration instead of the given name.

### Build parser
Simple function ```create_parser``` let you build your own parser. With your parser,
you are ready to parse your configuration file.

from configbuilder.parser import create_parser
parser = create_parser('path/your_template.yaml',
casesensitivekey=False)
config = parser.parse_config('path/your_configuration.yaml')
value = config.get('attribute')

Or you can define your template in your code in dictionary type, and create the parser.

from configbuilder.parser import ConfigParser
YOUR_TEMPLATE = {
'KEY1': 'String',
'KEY2': 'Integer'
}
parser = ConfigParser(YOUR_TEMPLATE)

### Define new types
You can define your own validator inheriting Validator class and set to parser.
You implement validate_yourtype() in your custom validator to define new type called
```yourtype```. This type can be used in the template file.
Here is the code defining a new type called ```protocol``` which is kind of string,
but only accpeting 'ssh' or 'ftp' as the value.

from configbuilder.validator import Validator
class MyValidator(Validator):
def validate_protocol(self, value):
supporting_protocol = ['ssh', 'ftp']
return self._validate_choiceses(value, supporting_protocol)

This validator can be set when building the parser.

parser = create_parser('path/your_template.yaml',
validator=MyValidator())

## Installation

pip install configbuilder

## Authors
* ** Joong-Hee Lee ** - *Initial work* - [joongh](https://github.com/joongh)

## License
This project is licensed under the MIT License - see the [LICENSE.md](LICENSE.md) file for details

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

configbuilder-0.2.2.tar.gz (6.0 kB view details)

Uploaded Source

File details

Details for the file configbuilder-0.2.2.tar.gz.

File metadata

File hashes

Hashes for configbuilder-0.2.2.tar.gz
Algorithm Hash digest
SHA256 3271f4d9c36aaf75c300bb6d4c0cabe46bbaf3f38420d785fcd447f56e3b8c68
MD5 470451462ee03a72a16f4db740721163
BLAKE2b-256 d058b3ca8583fbd951b3e46def3fa369d98e683c5078436d9ff079d199a6a60a

See more details on using hashes here.

Supported by

AWS AWS Cloud computing and Security Sponsor Datadog Datadog Monitoring Fastly Fastly CDN Google Google Download Analytics Microsoft Microsoft PSF Sponsor Pingdom Pingdom Monitoring Sentry Sentry Error logging StatusPage StatusPage Status page