photoprism/internal/classify/gen.go

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// +build ignore
// This generates stopwords.go by running "go generate"
package main
import (
"io/ioutil"
"log"
"os"
"path/filepath"
"text/template"
"unicode"
"github.com/photoprism/photoprism/pkg/fs"
"github.com/photoprism/photoprism/pkg/txt"
"gopkg.in/yaml.v2"
)
// LabelRule defines the rule for a given Label
type LabelRule struct {
Label string
See string
Threshold float32
Categories []string
Priority int
}
type LabelRules map[string]LabelRule
// This function generates the rules.go file containing rule extracted from rules.yml file
func main() {
rules := make(LabelRules)
fileName := "rules.yml"
if !fs.FileExists(fileName) {
log.Panicf("classify: label rules not found in %s", txt.Quote(filepath.Base(fileName)))
}
yamlConfig, err := ioutil.ReadFile(fileName)
if err != nil {
panic(err)
}
err = yaml.Unmarshal(yamlConfig, rules)
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if err != nil {
panic(err)
}
for label, rule := range rules {
for _, char := range label {
if unicode.IsUpper(char) {
log.Panicf("classify: %s must be lowercase", label)
}
}
if rule.See != "" {
rule, ok := rules[rule.See]
if !ok {
log.Panicf("missing label: %s", rule.See)
}
rules[label] = rule
}
}
f, err := os.Create("rules.go")
if err != nil {
panic(err)
}
defer f.Close()
packageTemplate.Execute(f, struct {
Rules LabelRules
}{
Rules: rules,
})
}
var packageTemplate = template.Must(template.New("").Parse(`// Code generated by go generate; DO NOT EDIT.
package classify
var rules = LabelRules{
{{- range $key, $value := .Rules }}
{{ printf "%q" $key }}: {
Label: {{ printf "%q" $value.Label }},
Threshold: {{ printf "%f" $value.Threshold }},
Priority: {{ $value.Priority }},
Categories: []string{ {{- range $value.Categories }} {{ printf "%q" . }}, {{- end }} },
},
{{- end }}
}`))