conf

package module
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 Go to latest Published: Apr 11, 2014 License: BSD-3-Clause Imports: 9 Imported by: 3

README

conf

Package conf provide support for parsing configuration files.

Documentation online

Installation

go get -u github.com/gosimple/conf

Usage

Check example folder

import "github.com/gosimple/conf"

NOTE: All section names and options are case insensitive. All values are case sensitive.

Example 1

Config

host = something.com
port = 443
active = true
compression = off

list-str = hello, world
list-int = 1, 2, 3

Code

c, err := conf.ReadFile("something.config")
c.String("default", "host")				// return something.com
c.Int("default", "port")				// return 443
c.Bool("default", "active")				// return true
c.Bool("default", "compression")		// return false

c.StringList("default", "list-str")		// return ["hello", "world"]
c.IntList("default", "list-int")		// return [1, 2, 3]
Example 2

Config

[default]
host = something.com
port = 443
active = true
compression = off

[service-1]
compression = on

[service-2]
port = 444

Code

c, err := conf.ReadFile("something.config")
c.Bool("default", "compression") // returns false
c.Bool("service-1", "compression") // returns true
c.Bool("service-2", "compression") // returns GetError
Requests or bugs?

https://github.com/gosimple/conf/issues

Info

Package conf is based on goconfig

License

The source files are distributed under the The BSD 3-Clause License. You can find full license text in the LICENSE file.

Documentation

Overview

This package implements a parser for configuration files. This allows easy reading and writing of structured configuration files.

Given the configuration file: 

[default]
host = example.com
port = 443
php = on

list-str = hello, world
list-int = 1, 2, 3

[service-1]
host = s1.example.com
allow-writing = false

To read this configuration file, do: 

c, err := conf.ReadFile("server.conf")
c.String("default", "host")             // returns example.com
c.Int("", "port")                       // returns 443 (assumes "default")
c.Bool("", "php")                       // returns true

c.StringList("default", "list-str")		// return ["hello", "world"]
c.IntList("default", "list-int")		// return [1, 2, 3]

c.String("service-1", "host")           // returns s1.example.com
c.Bool("service-1","allow-writing")     // returns false
c.Int("service-1", "port")              // returns 0 and a GetError

Note that all section and option names are case insensitive. All values are case sensitive.

Goconfig's string substitution syntax has not been removed. However, it may be taken out or modified in the future.

Index

Constants

View Source 
const (
	// Get Errors
	SectionNotFound = iota
	OptionNotFound
	MaxDepthReached

	// Read Errors
	BlankSection

	// Get and Read Errors
	CouldNotParse
)

Variables

View Source 
var (
	DefaultSection = "default" // Default section name (must be lower-case).
	DepthValues    = 200       // Maximum allowed depth when recursively substituing variable names.

	// Strings accepted as bool.
	BoolStrings = map[string]bool{
		"t":     true,
		"true":  true,
		"y":     true,
		"yes":   true,
		"on":    true,
		"1":     true,
		"f":     false,
		"false": false,
		"n":     false,
		"no":    false,
		"off":   false,
		"0":     false,
	}
)

Functions

This section is empty.

Types

type Config 

type Config struct {
	// contains filtered or unexported fields
}

Config is the representation of configuration settings. The public interface is entirely through methods.

func New 

func New() *Config

New creates an empty configuration representation. This representation can be filled with AddSection and AddOption and then saved to a file using WriteFile.

func ReadBytes 

func ReadBytes(conf []byte) (c *Config, err error)

func ReadFile 

func ReadFile(fname string) (c *Config, err error)

ReadFile reads a file and returns a new configuration representation. This representation can be queried with String, etc.

func (*Config) AddOption 

func (c *Config) AddOption(section string, option string, value string) bool

AddOption adds a new option and value to the configuration. It returns true if the option and value were inserted, and false if the value was overwritten. If the section does not exist in advance, it is created.

func (*Config) AddSection 

func (c *Config) AddSection(section string) bool

AddSection adds a new section to the configuration. It returns true if the new section was inserted, and false if the section already existed.

func (*Config) Bool 

func (c *Config) Bool(section string, option string) (value bool, err error)

Bool has the same behaviour as String but converts the response to bool. See constant BoolStrings for string values converted to bool.

func (*Config) BoolList 

func (c *Config) BoolList(section string, option string) (values []bool, err error)

BoolList has the same behaviour as StringList but converts the response to []bool.

func (*Config) Float64 

func (c *Config) Float64(section string, option string) (value float64, err error)

Float64 has the same behaviour as String but converts the response to float64.

func (*Config) Float64List 

func (c *Config) Float64List(section string, option string) (values []float64, err error)

Float64List has the same behaviour as StringList but converts the response to []float64.

func (*Config) HasOption 

func (c *Config) HasOption(section string, option string) bool

HasOption checks if the configuration has the given option in the section. It returns false if either the option or section do not exist.

func (*Config) HasSection 

func (c *Config) HasSection(section string) bool

HasSection checks if the configuration has the given section. (The default section always exists.)

func (*Config) Int 

func (c *Config) Int(section string, option string) (value int, err error)

Int has the same behaviour as String but converts the response to int.

func (*Config) Int64 

func (c *Config) Int64(section string, option string) (value int64, err error)

Int64 has the same behaviour as String but converts the response to int64.

func (*Config) Int64List 

func (c *Config) Int64List(section string, option string) (values []int64, err error)

Int64List has the same behaviour as StringList but converts the response to []int64.

func (*Config) IntList 

func (c *Config) IntList(section string, option string) (values []int, err error)

IntList has the same behaviour as StringList but converts the response to []int.

func (*Config) Options 

func (c *Config) Options(section string) (options []string, err error)

Options returns the list of options available in the given section. It returns an error if the section does not exist and an empty list if the section is empty. Options within the default section are also included.

func (*Config) RawString 

func (c *Config) RawString(section string, option string) (value string, err error)

RawString gets the (raw) string value for the given option in the section. The raw string value is not subjected to unfolding, which was illustrated in the beginning of this documentation. It returns an error if either the section or the option do not exist.

func (*Config) Read 

func (c *Config) Read(reader io.Reader) (err error)

Read reads an io.Reader and returns a configuration representation. This representation can be queried with String, etc.

func (*Config) RemoveOption 

func (c *Config) RemoveOption(section string, option string) bool

RemoveOption removes a option and value from the configuration. It returns true if the option and value were removed, and false otherwise, including if the section did not exist.

func (*Config) RemoveSection 

func (c *Config) RemoveSection(section string) bool

RemoveSection removes a section from the configuration. It returns true if the section was removed, and false if section did not exist.

func (*Config) Sections 

func (c *Config) Sections() (sections []string)

Sections returns the list of sections in the configuration. (The default section always exists.)

func (*Config) String 

func (c *Config) String(section string, option string) (value string, err error)

String gets the string value for the given option in the section. If the value needs to be unfolded (see e.g. %(host)s example in the beginning of this documentation), then String does this unfolding automatically, up to DepthValues number of iterations. It returns an error if either the section or the option do not exist, or the unfolding cycled.

func (*Config) StringList 

func (c *Config) StringList(section string, option string) (values []string, err error)

StringList gets the string values for the given option in the section. It returns an error if either the section or the option do not exist, or the unfolding cycled.

func (*Config) Write 

func (c *Config) Write(writer io.Writer, header string) (err error)

Writes the configuration file to the io.Writer.

func (*Config) WriteBytes 

func (c *Config) WriteBytes(header string) (config []byte)

WriteBytes returns the configuration file.

func (*Config) WriteFile 

func (c *Config) WriteFile(fname string, perm uint32, header string) (err error)

WriteFile saves the configuration representation to a file. The desired file permissions must be passed as in os.Open. The header is a string that is saved as a comment in the first line of the file.

type GetError 

type GetError struct {
	Reason    int
	ValueType string
	Value     string
	Section   string
	Option    string
}

func (GetError) Error 

func (err GetError) Error() string

type ReadError 

type ReadError struct {
	Reason int
	Line   string
}

func (ReadError) Error 

func (err ReadError) Error() string

Source Files

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