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|
package common
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"strconv"
"strings"
"time"
)
// ParseSize parses a size string like "10MB", "1GB" into bytes
func ParseSize(sizeStr string) (int64, error) {
originalStr := sizeStr
sizeStr = strings.ToUpper(strings.TrimSpace(sizeStr))
// Handle single-letter suffixes (K, M, G, T) by adding B
if len(sizeStr) > 1 {
lastChar := sizeStr[len(sizeStr)-1]
secondLastChar := byte('0')
if len(sizeStr) > 1 {
secondLastChar = sizeStr[len(sizeStr)-2]
}
// If ends with K, M, G, or T and the character before it is a digit, add B
if (lastChar == 'K' || lastChar == 'M' || lastChar == 'G' || lastChar == 'T') &&
(secondLastChar >= '0' && secondLastChar <= '9') {
sizeStr = sizeStr + "B"
}
}
// Order matters - check longer suffixes first
suffixes := []struct {
suffix string
multiplier int64
}{
{"TB", 1024 * 1024 * 1024 * 1024},
{"GB", 1024 * 1024 * 1024},
{"MB", 1024 * 1024},
{"KB", 1024},
{"B", 1},
}
for _, s := range suffixes {
if strings.HasSuffix(sizeStr, s.suffix) {
numStr := strings.TrimSuffix(sizeStr, s.suffix)
numStr = strings.TrimSpace(numStr)
if numStr == "" {
return 0, fmt.Errorf("no number before size suffix")
}
num, err := strconv.ParseFloat(numStr, 64)
if err != nil {
return 0, fmt.Errorf("invalid size number: %s (original: %s, processed: %s)", numStr, originalStr, sizeStr)
}
return int64(num * float64(s.multiplier)), nil
}
}
// Try parsing as plain number (assume bytes)
num, err := strconv.ParseInt(sizeStr, 10, 64)
if err != nil {
return 0, fmt.Errorf("invalid size format: %s", sizeStr)
}
return num, nil
}
// FormatSize formats bytes into human-readable size
func FormatSize(bytes int64) string {
const unit = 1024
if bytes < unit {
return fmt.Sprintf("%d B", bytes)
}
div, exp := int64(unit), 0
for n := bytes / unit; n >= unit; n /= unit {
div *= unit
exp++
}
return fmt.Sprintf("%.1f %cB", float64(bytes)/float64(div), "KMGTPE"[exp])
}
// BuildCommand builds a dtail command if it doesn't exist
func BuildCommand(cmd string) error {
// Check if binary exists
if _, err := os.Stat(cmd); err == nil {
return nil // Already exists
}
// Build the command
cmdName := filepath.Base(cmd)
buildCmd := exec.Command("go", "build", "-o", cmd, fmt.Sprintf("./cmd/%s/main.go", cmdName))
buildCmd.Stdout = os.Stdout
buildCmd.Stderr = os.Stderr
fmt.Printf("Building %s...\n", cmdName)
return buildCmd.Run()
}
// BuildCommands builds multiple dtail commands
func BuildCommands(commands ...string) error {
for _, cmd := range commands {
if err := BuildCommand(cmd); err != nil {
return fmt.Errorf("failed to build %s: %w", cmd, err)
}
}
return nil
}
// EnsureDirectory creates a directory if it doesn't exist
func EnsureDirectory(dir string) error {
return os.MkdirAll(dir, 0755)
}
// FileExists checks if a file exists
func FileExists(path string) bool {
_, err := os.Stat(path)
return err == nil
}
// GetTimestamp returns a timestamp string for file naming
func GetTimestamp() string {
return time.Now().Format("20060102_150405")
}
// GetGitCommit returns the current git commit hash (short form)
func GetGitCommit() string {
cmd := exec.Command("git", "rev-parse", "--short", "HEAD")
output, err := cmd.Output()
if err != nil {
return "unknown"
}
return strings.TrimSpace(string(output))
}
// RunCommandWithTimeout runs a command with a timeout
func RunCommandWithTimeout(timeout time.Duration, name string, args ...string) error {
cmd := exec.Command(name, args...)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Start(); err != nil {
return err
}
done := make(chan error, 1)
go func() {
done <- cmd.Wait()
}()
select {
case <-time.After(timeout):
if err := cmd.Process.Kill(); err != nil {
return fmt.Errorf("failed to kill process: %w", err)
}
return fmt.Errorf("command timed out after %v", timeout)
case err := <-done:
return err
}
}
// CleanupFiles removes temporary files matching patterns
func CleanupFiles(patterns ...string) error {
for _, pattern := range patterns {
matches, err := filepath.Glob(pattern)
if err != nil {
return fmt.Errorf("invalid pattern %s: %w", pattern, err)
}
for _, match := range matches {
if err := os.Remove(match); err != nil && !os.IsNotExist(err) {
return fmt.Errorf("failed to remove %s: %w", match, err)
}
}
}
return nil
}
// Colors for terminal output
const (
ColorReset = "\033[0m"
ColorRed = "\033[0;31m"
ColorGreen = "\033[0;32m"
ColorYellow = "\033[1;33m"
ColorBlue = "\033[0;34m"
ColorPurple = "\033[0;35m"
ColorCyan = "\033[0;36m"
ColorWhite = "\033[0;37m"
)
// PrintColored prints colored text to stdout
func PrintColored(color, format string, args ...interface{}) {
fmt.Printf(color+format+ColorReset, args...)
}
// PrintSection prints a section header
func PrintSection(title string) {
PrintColored(ColorGreen, "%s\n", title)
fmt.Println(strings.Repeat("=", len(title)))
}
// PrintInfo prints an info message
func PrintInfo(format string, args ...interface{}) {
PrintColored(ColorYellow, format, args...)
}
// PrintError prints an error message
func PrintError(format string, args ...interface{}) {
PrintColored(ColorRed, format, args...)
}
// PrintSuccess prints a success message
func PrintSuccess(format string, args ...interface{}) {
PrintColored(ColorGreen, format, args...)
}
|
