64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
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package cfg
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import (
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"os"
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"time"
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"github.com/wiggin77/cfg/ini"
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)
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// SrcFile is a configuration `Source` backed by a file containing
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// name/value pairs or INI format.
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type SrcFile struct {
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AbstractSourceMonitor
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ini ini.Ini
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file *os.File
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}
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// NewSrcFileFromFilespec creates a new SrcFile with the specified filespec.
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func NewSrcFileFromFilespec(filespec string) (*SrcFile, error) {
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file, err := os.Open(filespec)
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if err != nil {
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return nil, err
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}
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return NewSrcFile(file)
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}
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// NewSrcFile creates a new SrcFile with the specified os.File.
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func NewSrcFile(file *os.File) (*SrcFile, error) {
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sf := &SrcFile{}
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sf.freq = time.Minute
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sf.file = file
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if err := sf.ini.LoadFromFile(file); err != nil {
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return nil, err
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}
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return sf, nil
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}
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// GetProps fetches all the properties from a source and returns
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// them as a map.
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func (sf *SrcFile) GetProps() (map[string]string, error) {
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lm, err := sf.GetLastModified()
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if err != nil {
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return nil, err
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}
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// Check if we need to reload.
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if sf.ini.GetLastModified() != lm {
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if err := sf.ini.LoadFromFile(sf.file); err != nil {
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return nil, err
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}
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}
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return sf.ini.ToMap(), nil
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}
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// GetLastModified returns the time of the latest modification to any
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// property value within the source.
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func (sf *SrcFile) GetLastModified() (time.Time, error) {
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fi, err := sf.file.Stat()
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if err != nil {
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return time.Now(), err
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}
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return fi.ModTime(), nil
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}
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