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ArcanistWeldWorkflow.php
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ArcanistWeldWorkflow.php
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<?php
final
class
ArcanistWeldWorkflow
extends
ArcanistWorkflow
{
public
function
getWorkflowName
(
)
{
return
'weld'
;
}
public
function
getWorkflowInformation
(
)
{
$help
=
pht
(
<<<EOTEXT
Robustly fuse two or more files together. The resulting joint is much stronger
than the one created by tools like __cat__.
EOTEXT
)
;
return
$this
->
newWorkflowInformation
(
)
->
addExample
(
pht
(
'**weld** [__options__] __file__ __file__ ...'
)
)
->
setHelp
(
$help
)
;
}
public
function
getWorkflowArguments
(
)
{
return
array
(
$this
->
newWorkflowArgument
(
'files'
)
->
setIsPathArgument
(
true
)
->
setWildcard
(
true
)
,
)
;
}
public
function
runWorkflow
(
)
{
$files
=
$this
->
getArgument
(
'files'
)
;
if
(
count
(
$files
)
<
2
)
{
throw
new
PhutilArgumentUsageException
(
pht
(
'Specify two or more files to weld together.'
)
)
;
}
$buffer
=
array
(
)
;
foreach
(
$files
as
$file
)
{
$data
=
Filesystem
::
readFile
(
$file
)
;
if
(
!
strlen
(
$data
)
)
{
continue
;
}
$lines
=
phutil_split_lines
(
$data
,
true
)
;
$overlap
=
mt_rand
(
16
,
32
)
;
if
(
count
(
$buffer
)
>
6
)
{
$overlap
=
min
(
$overlap
,
ceil
(
count
(
$buffer
)
/
2
)
)
;
}
if
(
count
(
$lines
)
>
6
)
{
$overlap
=
min
(
$overlap
,
ceil
(
count
(
$lines
)
/
2
)
)
;
}
$overlap
=
min
(
$overlap
,
count
(
$buffer
)
)
;
$overlap
=
min
(
$overlap
,
count
(
$lines
)
)
;
$buffer_len
=
count
(
$buffer
)
;
for
(
$ii
=
0
;
$ii
<
$overlap
;
$ii
++
)
{
$buffer
[
$buffer_len
-
$overlap
+
$ii
]
=
$this
->
weldLines
(
$buffer
[
$buffer_len
-
$overlap
+
$ii
]
,
$lines
[
$ii
]
,
(
$ii
+
0.5
)
/
$overlap
)
;
}
for
(
$ii
=
$overlap
;
$ii
<
count
(
$lines
)
;
$ii
++
)
{
$buffer
[
]
=
$lines
[
$ii
]
;
}
}
echo
implode
(
''
,
$buffer
)
;
}
private
function
weldLines
(
$u
,
$v
,
$bias
)
{
$newline
=
null
;
$matches
=
null
;
if
(
preg_match
(
'/([\r\n]+)\z/'
,
$u
,
$matches
)
)
{
$newline
=
$matches
[
1
]
;
}
if
(
preg_match
(
'/([\r\n]+)\z/'
,
$v
,
$matches
)
)
{
$newline
=
$matches
[
1
]
;
}
$u
=
rtrim
(
$u
,
"\r\n"
)
;
$v
=
rtrim
(
$v
,
"\r\n"
)
;
$u
=
phutil_utf8v_combined
(
$u
)
;
$v
=
phutil_utf8v_combined
(
$v
)
;
$len
=
max
(
count
(
$u
)
,
count
(
$v
)
)
;
while
(
count
(
$u
)
<
$len
)
{
$u
[
]
=
' '
;
}
while
(
count
(
$v
)
<
$len
)
{
$v
[
]
=
' '
;
}
$rand_max
=
mt_getrandmax
(
)
;
$result
=
array
(
)
;
for
(
$ii
=
0
;
$ii
<
$len
;
$ii
++
)
{
$uc
=
$u
[
$ii
]
;
$vc
=
$v
[
$ii
]
;
$threshold
=
$bias
;
if
(
$uc
==
' '
)
{
$threshold
=
1
;
}
if
(
$vc
==
' '
)
{
$threshold
=
0
;
}
if
(
(
mt_rand
(
)
/
$rand_max
)
>
$threshold
)
{
$r
=
$uc
;
}
else
{
$r
=
$vc
;
}
$result
[
]
=
$r
;
}
if
(
$newline
!==
null
)
{
$result
[
]
=
$newline
;
}
return
implode
(
''
,
$result
)
;
}
}
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