find recursive functions in c files in a directory using cflow

recflow.go

package main

import (
	"fmt"
	"os"
	"os/exec"
	"path/filepath"
	"strings"
)

func recursiveoutput(out []byte) {
	// split the output into lines
	lines := strings.Split(string(out), "\n")
	// loop through the lines
	for _, line := range lines {
		// does the line contain "recursive:"
		if strings.Contains(line, "recursive:") {
			// print the line
			fmt.Println(line)
		}
	}
	return
}

func cflow(path string) {
	// call the cflow command (/usr/bin/cflow) and capture the output
	out, err := exec.Command("/usr/bin/cflow", path).Output()
	if err != nil {
		fmt.Printf("%s", err)
		return
	}
	recursiveoutput(out)
}

func main() {
	// get the first argument given to the program
	dir := os.Args[1]
	// recursively walk the directory using filepath.Walk
	filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
		if err != nil {
			return err

		} else if info.IsDir() {
			return nil
		} else {
			// array of strings
			ext := []string{".c", ".h", ".cc", ".cpp", ".cxx", ".hpp", ".hxx"}

			// does the file end with one of the extensions
			for _, e := range ext {
				if strings.HasSuffix(path, e) {
					// call the cflow function
					cflow(path)
				}
			}
		}
		return nil
	})
}