Properties

properties - Java Properties format contents parse, marshal and unmarshal library.

• Generic properties contents parser, marshal and unmarshal
• Support Marshal and Unmarshal like json package
• Support line comments start with !, #
  • enhanced: allow //, /* multi line comments */
• Support multi line string value, end with \\
  • enhanced: allow '''multi line string'''', """multi line string"""
• Support value refer parse by var. format: ${some.other.key}
• Support ENV var parse. format: ${APP_ENV}, ${APP_ENV | default}

中文说明

Install

go get github.com/gookit/properties

Usage

Example properties contents:

name = inhere
age = 345
only-key = 
env-key = ${SHELL | bash}

 ##### comments1
top.sub.key0 = a string value
top.sub.key1 = "a quote value1"
top.sub.key2 = 'a quote value2'
/* comments 1.1 */
top.sub.key3 = 234

! inline list
top2.inline.list.ids = [234, 345, 456]

# use var refer
top2.sub.var-refer = ${top.sub.key0}

/*
multi line
comments
*/
top2.sub.key2-other = has-char

# comments 2
top.sub.key3 = false

# slice list
top.sub.key4[0] = abc
top.sub.key4[1] = def

## --- comments 3 ---
top.sub.key5[0].f1 = ab
top.sub.key5[1].f2 = de

# multi line value
top.sub2.mline1 = """multi line
value
"""

# multi line value2
top.sub2.mline2 = this is \
multi line2 \
value

Parse to data

  p := properties.NewParser(
      properties.ParseEnv,
      properties.ParseInlineSlice,
  )
  p.Parse(text)
  fmt.Println("\ndata map:")
  dump.NoLoc(p.Data)

Output:

maputil.Data { #len=6
  "name": string("inhere"), #len=6
  "age": string("345"), #len=3
  "only-key": string(""), #len=0
  "env-key": string("/bin/zsh"), #len=8
  "top": map[string]interface {} { #len=2
    "sub": map[string]interface {} { #len=6
      "key5": []map[string]interface {} [ #len=2
        map[string]interface {} { #len=1
          "f1": string("ab"), #len=2
        },
        map[string]interface {} { #len=1
          "f2": string("de"), #len=2
        },
      ],
      "key0": string("a string value"), #len=14
      "key1": string("a quote value1"), #len=14
      "key2": string("a quote value2"), #len=14
      "key3": string("false"), #len=5
      "key4": []string [ #len=2
        string("abc"), #len=3
        string("def"), #len=3
      ],
    },
    "sub2": map[string]interface {} { #len=2
      "mline2": string("this is multi line2 value"), #len=25
      "mline1": string("multi line
value
"), #len=17
    },
  },
  "top2": map[string]interface {} { #len=2
    "sub": map[string]interface {} { #len=2
      "var-refer": string("a string value"), #len=14
      "key2-other": string("has-char"), #len=8
    },
    "inline": map[string]interface {} { #len=1
      "list": map[string]interface {} { #len=1
        "ids": []string [ #len=3
          string("234"), #len=3
          string("345"), #len=3
          string("456"), #len=3
        ],
      },
    },
  },
},

Parse and binding struct

package main

import (
	"fmt"

	"github.com/gookit/properties"
)

func Example() {
	text := `
# properties string
name = inhere
age = 200
`

	p, err := properties.Parse(text)
	if err != nil {
		panic(err)
	}

	type MyConf struct {
		Name string `properties:"name"`
		Age  int    `properties:"age"`
	}

	cfg := &MyConf{}
	err = p.MapStruct("", cfg)
	if err != nil {
		panic(err)
	}

	fmt.Println(*cfg)

	// Output:
	// {inhere 200}
}

Marshal/Unmarshal

• Marshal(v any) ([]byte, error)
• Unmarshal(v []byte, ptr any) error

Example: Unmarshal:

cfg := &MyConf{}
err := properties.Unmarshal([]byte(text), cfg)
if err != nil {
    panic(err)
}

fmt.Println(*cfg)

Example: Marshal

data := map[string]any{
	"name": "inhere",
	"age":  234,
	"str1": "a string",
	"str2": "a multi \nline string",
	"top": map[string]any{
		"sub0": "val0",
		"sub1": []string{"val1-0", "val1-1"},
	},
}

bs, err = properties.Marshal(data)
if err != nil {
	panic(err)
}

fmt.Println(string(bs))

Output:

str1=a string
str2=a multi \
line string
top.sub1[0]=val1-0
top.sub1[1]=val1-1
top.sub0=val0
name=inhere
age=234

Config management

If you want to support multiple formats and multiple file loading, it is recommended to use gookit/config

• Support multi formats: JSON(default), INI, Properties, YAML, TOML, HCL
• Support multi file loading and will auto merge loaded data

Gookit packages

• gookit/ini INI parse by golang. INI config data management library.
• gookit/rux Simple and fast request router, web framework for golang
• gookit/gcli build CLI application, tool library, running CLI commands
• gookit/event Lightweight event manager and dispatcher implements by Go
• gookit/cache Generic cache use and cache manager for golang. support File, Memory, Redis, Memcached.
• gookit/config Go config management. support JSON, YAML, TOML, INI, HCL, ENV and Flags
• gookit/color A command-line color library with true color support, universal API methods and Windows support
• gookit/filter Provide filtering, sanitizing, and conversion of golang data
• gookit/validate Use for data validation and filtering. support Map, Struct, Form data
• gookit/goutil Some utils for the Go: string, array/slice, map, format, cli, env, filesystem, test and more
• More, please see https://github.com/gookit

See also

• Ini parse gookit/ini/parser
• Properties parse gookit/properties

License

MIT