101 lines
2.9 KiB
Markdown
101 lines
2.9 KiB
Markdown
Overview [](https://travis-ci.org/magiconair/properties)
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========
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#### Current version: 1.7.2
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properties is a Go library for reading and writing properties files.
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It supports reading from multiple files or URLs and Spring style recursive
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property expansion of expressions like `${key}` to their corresponding value.
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Value expressions can refer to other keys like in `${key}` or to environment
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variables like in `${USER}`. Filenames can also contain environment variables
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like in `/home/${USER}/myapp.properties`.
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Properties can be decoded into structs, maps, arrays and values through
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struct tags.
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Comments and the order of keys are preserved. Comments can be modified
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and can be written to the output.
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The properties library supports both ISO-8859-1 and UTF-8 encoded data.
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Starting from version 1.3.0 the behavior of the MustXXX() functions is
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configurable by providing a custom `ErrorHandler` function. The default has
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changed from `panic` to `log.Fatal` but this is configurable and custom
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error handling functions can be provided. See the package documentation for
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details.
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Read the full documentation on [GoDoc](https://godoc.org/github.com/magiconair/properties) [](https://godoc.org/github.com/magiconair/properties)
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Getting Started
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---------------
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```go
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import (
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"flag"
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"github.com/magiconair/properties"
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)
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func main() {
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// init from a file
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p := properties.MustLoadFile("${HOME}/config.properties", properties.UTF8)
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// or multiple files
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p = properties.MustLoadFiles([]string{
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"${HOME}/config.properties",
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"${HOME}/config-${USER}.properties",
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}, properties.UTF8, true)
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// or from a map
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p = properties.LoadMap(map[string]string{"key": "value", "abc": "def"})
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// or from a string
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p = properties.MustLoadString("key=value\nabc=def")
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// or from a URL
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p = properties.MustLoadURL("http://host/path")
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// or from multiple URLs
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p = properties.MustLoadURL([]string{
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"http://host/config",
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"http://host/config-${USER}",
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}, true)
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// or from flags
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p.MustFlag(flag.CommandLine)
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// get values through getters
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host := p.MustGetString("host")
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port := p.GetInt("port", 8080)
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// or through Decode
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type Config struct {
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Host string `properties:"host"`
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Port int `properties:"port,default=9000"`
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Accept []string `properties:"accept,default=image/png;image;gif"`
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Timeout time.Duration `properties:"timeout,default=5s"`
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}
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var cfg Config
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if err := p.Decode(&cfg); err != nil {
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log.Fatal(err)
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}
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}
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```
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Installation and Upgrade
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------------------------
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```
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$ go get -u github.com/magiconair/properties
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```
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License
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-------
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2 clause BSD license. See [LICENSE](https://github.com/magiconair/properties/blob/master/LICENSE) file for details.
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ToDo
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----
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* Dump contents with passwords and secrets obscured
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