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runtime_config_parser.go
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/
runtime_config_parser.go
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package dotnetexecute
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"os"
"path/filepath"
"strings"
"github.com/gravityblast/go-jsmin"
)
type RuntimeConfig struct {
Path string
Version string
AppName string
Executable bool
UsesASPNet bool
}
type RuntimeConfigParser struct{}
func NewRuntimeConfigParser() RuntimeConfigParser {
return RuntimeConfigParser{}
}
func (p RuntimeConfigParser) Parse(glob string) (RuntimeConfig, error) {
files, err := filepath.Glob(glob)
if err != nil {
return RuntimeConfig{}, fmt.Errorf("failed to find *.runtimeconfig.json: %w: %q", err, glob)
}
if len(files) > 1 {
return RuntimeConfig{}, fmt.Errorf("multiple *.runtimeconfig.json files present: %v", files)
}
if len(files) == 0 {
return RuntimeConfig{}, fmt.Errorf("no *.runtimeconfig.json found: %w", os.ErrNotExist)
}
config := RuntimeConfig{
Path: files[0],
}
var data struct {
RuntimeOptions struct {
Framework struct {
Name string `json:"name"`
Version string `json:"version"`
} `json:"framework"`
} `json:"runtimeOptions"`
}
file, err := os.Open(config.Path)
if err != nil {
return RuntimeConfig{}, err
}
defer file.Close()
buffer := bytes.NewBuffer(nil)
err = jsmin.Min(file, buffer)
if err != nil {
return RuntimeConfig{}, err
}
err = json.NewDecoder(buffer).Decode(&data)
if err != nil {
return RuntimeConfig{}, err
}
config.Version = data.RuntimeOptions.Framework.Version
if data.RuntimeOptions.Framework.Name == "Microsoft.NETCore.App" && config.Version == "" {
config.Version = "*"
}
if data.RuntimeOptions.Framework.Name == "Microsoft.AspNetCore.App" ||
data.RuntimeOptions.Framework.Name == "Microsoft.AspNetCore.All" {
config.UsesASPNet = true
if config.Version == "" {
config.Version = "*"
}
}
config.AppName = strings.TrimSuffix(filepath.Base(file.Name()), ".runtimeconfig.json")
info, err := os.Stat(strings.TrimSuffix(file.Name(), ".runtimeconfig.json"))
if err != nil && !errors.Is(err, os.ErrNotExist) {
return RuntimeConfig{}, err
}
if info != nil && info.Mode()&0111 != 0 {
config.Executable = true
}
return config, nil
}