/
syntax.go
113 lines (93 loc) · 2.13 KB
/
syntax.go
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package configure
import (
"encoding/json"
"fmt"
"regexp"
"strings"
"github.com/link-duan/toml"
"github.com/pkg/errors"
"gopkg.in/yaml.v3"
"github.com/clickvisual/clickvisual/api/internal/pkg/model/view"
)
type (
syntaxChecker func(content string) error
SyntaxError struct {
LineNumber int
Message string
}
)
var (
syntaxCheckers = map[view.ConfigFormat]syntaxChecker{
view.ConfigFormatToml: tomlChecker,
view.ConfigFormatYaml: yamlChecker,
view.ConfigFormatIni: iniChecker,
view.ConfigFormatJson: jsonChecker,
}
)
func (s SyntaxError) Error() string {
return fmt.Sprintf("syntax error. near line %d. %s", s.LineNumber, s.Message)
}
func CheckSyntax(format view.ConfigFormat, content string) error {
checker, ok := syntaxCheckers[format]
if !ok {
return nil
}
return checker(content)
}
func tomlChecker(content string) error {
var target interface{}
_, err := toml.Decode(content, &target)
if err != nil {
if parseErr, ok := err.(toml.ParseError); ok {
return SyntaxError{
LineNumber: parseErr.Line,
Message: fmt.Sprintf("last key is %s", parseErr.LastKey),
}
}
return err
}
return nil
}
func yamlChecker(content string) error {
var target interface{}
decoder := yaml.NewDecoder(strings.NewReader(content))
err := decoder.Decode(&target)
if err != nil {
return err
}
return nil
}
func iniChecker(content string) error {
sectionRegex := regexp.MustCompile(`^\\[[^\\[]+]$`)
keyValueRegex := regexp.MustCompile(`\\w+[\\s]*=[\\s]*.*`)
lines := strings.Split(content, "\n")
for lineNumber, line := range lines {
line = strings.Trim(line, "\r\n\t")
// skip blank line
if line == "" {
continue
}
// check if section
matched := sectionRegex.MatchString(line)
if matched {
continue
}
// check key value syntax
matched = keyValueRegex.MatchString(line)
if !matched {
return SyntaxError{
LineNumber: lineNumber,
Message: "invalid syntax",
}
}
}
return nil
}
func jsonChecker(content string) error {
var __ interface{}
err := json.Unmarshal([]byte(content), &__)
if err != nil {
return errors.Wrap(err, "JSON 语法错误")
}
return nil
}