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package main
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"strings"
)
func main() {
readme, err := ioutil.ReadFile("README.md")
if err != nil {
panic(err)
}
parts := strings.Split(string(readme), "<!--eg-->")
before := parts[0]
parts = strings.Split(string(readme), "<!--/eg-->")
after := parts[len(parts)-1]
examples, err := os.ReadDir("_examples")
if err != nil {
panic(err)
}
var output string
for _, example := range examples {
if !example.IsDir() {
continue
}
source, err := ioutil.ReadFile(filepath.Join("_examples", example.Name(), "main.go"))
if err != nil {
panic(err)
}
if strings.Contains(string(source), "noreadme") {
continue
}
name := strings.Title(strings.ReplaceAll(example.Name(), "-", " ")[3:])
buffer := bytes.NewBuffer([]byte{})
cmd := exec.Command("go", "run", "."+string(filepath.Separator)+filepath.Join("_examples", example.Name()))
cmd.Stdout = buffer
cmd.Stderr = os.Stderr
cwd, _ := os.Getwd()
cmd.Dir = cwd
if err := cmd.Run(); err != nil {
panic(err)
}
output += fmt.Sprintf("\n### Example: %s\n```go\n%s\n```\n\n#### Output\n```\n%s\n```\n", name, string(source), buffer.String())
}
output = before + "<!--eg-->" + output + "<!--/eg-->" + after
if err := ioutil.WriteFile("README.md", []byte(output), 0600); err != nil {
panic(err)
}
}
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