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package dash
// FormatFileMode converts file mode to Unix-style string representation (e.g., "drwxr-xr-x")
// Handles both Go's os.ModeDir format and standard Unix file type bits
func FormatFileMode(mode uint32) string {
var result []byte = make([]byte, 10)
// File type - handle Go's os.ModeDir first, then standard Unix file type bits
if mode&0x80000000 != 0 { // Go's os.ModeDir (0x80000000 = 2147483648)
result[0] = 'd'
} else {
switch mode & 0170000 { // S_IFMT mask
case 0040000: // S_IFDIR
result[0] = 'd'
case 0100000: // S_IFREG
result[0] = '-'
case 0120000: // S_IFLNK
result[0] = 'l'
case 0020000: // S_IFCHR
result[0] = 'c'
case 0060000: // S_IFBLK
result[0] = 'b'
case 0010000: // S_IFIFO
result[0] = 'p'
case 0140000: // S_IFSOCK
result[0] = 's'
default:
result[0] = '-' // S_IFREG is default
}
}
// Permission bits (always use the lower 12 bits regardless of file type format)
// Owner permissions
if mode&0400 != 0 { // S_IRUSR
result[1] = 'r'
} else {
result[1] = '-'
}
if mode&0200 != 0 { // S_IWUSR
result[2] = 'w'
} else {
result[2] = '-'
}
if mode&0100 != 0 { // S_IXUSR
result[3] = 'x'
} else {
result[3] = '-'
}
// Group permissions
if mode&0040 != 0 { // S_IRGRP
result[4] = 'r'
} else {
result[4] = '-'
}
if mode&0020 != 0 { // S_IWGRP
result[5] = 'w'
} else {
result[5] = '-'
}
if mode&0010 != 0 { // S_IXGRP
result[6] = 'x'
} else {
result[6] = '-'
}
// Other permissions
if mode&0004 != 0 { // S_IROTH
result[7] = 'r'
} else {
result[7] = '-'
}
if mode&0002 != 0 { // S_IWOTH
result[8] = 'w'
} else {
result[8] = '-'
}
if mode&0001 != 0 { // S_IXOTH
result[9] = 'x'
} else {
result[9] = '-'
}
return string(result)
}
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