// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"context"
	"os"
	"path"
	"syscall"
	"testing"
)

// Based on `man getumask` a vaporware GNU extension to glibc.
// returns file mode creation mask.
func getUmask() int {
	mask := syscall.Umask(0)
	syscall.Umask(mask)
	return mask
}

	fmt.Printf("%q\n", bytes.Split([]byte("a,b,c"), []byte(",")))
	fmt.Printf("%q\n", bytes.Split([]byte("a man a plan a canal panama"), []byte("a ")))
	fmt.Printf("%q\n", bytes.Split([]byte(" xyz "), []byte("")))
	fmt.Printf("%q\n", bytes.Split([]byte(""), []byte("Bernardo O'Higgins")))
	// Output:
	// ["a" "b" "c"]
	// ["" "man " "plan " "canal panama"]
	// [" " "x" "y" "z" " "]
	// [""]
}

func ExampleSplitN() {

package cmd

import (
	"strings"

	"istio.io/istio/istioctl/pkg/analyze"
	"istio.io/istio/istioctl/pkg/util"
)

// Values should try to use sendmail-style values as in <sysexits.h>
// See e.g. https://man.openbsd.org/sysexits.3
// or `less /usr/includes/sysexits.h` if you're on Linux
//
// Picking the right range is tricky--there are a lot of reserved ones (see

package mountinfo

import (
	"bufio"
	"fmt"
	"io"
	"os"
	"path/filepath"
	"strconv"
	"strings"
	"syscall"
)

const (
	// Number of fields per line in /proc/mounts as per the fstab man page.
	expectedNumFieldsPerLine = 6
	// Location of the mount file to use
	procMountsPath = "/proc/mounts"
)

// IsLikelyMountPoint determines if a directory is a mountpoint.
func IsLikelyMountPoint(path string) bool {

// The expected cgroup format is "hierarchy-ID:controller-list:cgroup-path", and
// this function will return an error if every cgroup does not meet that format.
//
// For more information, see:
//   - http://man7.org/linux/man-pages/man7/cgroups.7.html
//   - https://www.kernel.org/doc/Documentation/cgroup-v2.txt
func GetCgroups(procCgroupData bytes.Buffer) ([]Cgroup, error) {
	reader := bytes.NewReader(procCgroupData.Bytes())
	var cgroups []Cgroup

		// Marker is set to "obj1" in the testCase, (testCase 36).
		12: {
			IsTruncated: false,
			Objects: []ObjectInfo{
				{Name: "obj2"},
			},
		},
		// ListObjectsResult-13.
		// Marker is set to "man" in the testCase, (testCase37).
		13: {
			IsTruncated: false,
			Objects: []ObjectInfo{
				{Name: "newPrefix0"},
				{Name: "newPrefix1"},
				{Name: "newzen/zen/recurse/again/again/again/pics"},

	}

	// Only interested in flushing the size_t not mtime/atime
	if err = Fdatasync(w); err != nil {
		w.Close()
		return err
	}

	// Dealing with error returns from close() - 'man 2 close'
	//
	// A careful programmer will check the return value of close(), since it is quite possible that
	// errors on a previous write(2) operation are reported only on the final close() that releases