public
static
UpdateFile
FromString
(
string
line
)
{
if
(
line
==
null
)
throw
new
ArgumentNullException
(
"line"
)
;
if
(
line
.
StartsWith
(
" "
)
)
line
=
line
.
TrimStart
(
)
;
if
(
line
.
EndsWith
(
" "
)
)
line
=
line
.
TrimEnd
(
)
;
string
[
]
segments
=
line
.
Split
(
new
[
]
{
''
}
,
StringSplitOptions
.
RemoveEmptyEntries
)
;
if
(
segments
==
null
||
segments
.
Length
!=
5
)
{
throw
new
FormatException
(
"The string has an invalid format"
)
;
}
long
fileSize
=
long
.
Parse
(
segments
[
3
]
)
;
return
new
UpdateFile
(
segments
[
1
]
,
segments
[
0
]
,
segments
[
2
]
,
fileSize
)
;
}