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#!/usr/bin/env node
/**
*
@license
Apache-2.0
*
* Copyright (c) 2018 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict'
;
// MODULES //
var
resolve
=
require
(
'path'
)
.
resolve
;
var
readFileSync
=
require
(
'@stdlib/fs-read-file'
)
.
sync
;
var
CLI
=
require
(
'@stdlib/cli-ctor'
)
;
var
stdin
=
require
(
'@stdlib/process-read-stdin'
)
;
var
stdinStream
=
require
(
'@stdlib/streams-node-stdin'
)
;
var
RE_EOL
=
require
(
'@stdlib/regexp-eol'
)
.
REGEXP
;
var
isRegExpString
=
require
(
'@stdlib/assert-is-regexp-string'
)
;
var
reFromString
=
require
(
'@stdlib/utils-regexp-from-string'
)
;
var
replace
=
require
(
'./../lib'
)
;
// MAIN //
/**
* Main execution sequence.
*
*
@private
*
@returns
{
void
}
*/
function
main
(
)
{
var
search
;
var
split
;
var
flags
;
var
args
;
var
cli
;
// Create a command-line interface:
cli
=
new
CLI
(
{
'pkg'
:
require
(
'./../package.json'
)
,
'options'
:
require
(
'./../etc/cli_opts.json'
)
,
'help'
:
readFileSync
(
resolve
(
__dirname
,
'..'
,
'docs'
,
'usage.txt'
)
,
{
'encoding'
:
'utf8'
}
)
}
)
;
// Get any provided command-line options:
flags
=
cli
.
flags
(
)
;
if
(
flags
.
help
||
flags
.
version
)
{
return
;
}
// Get any provided command-line arguments:
args
=
cli
.
args
(
)
;
search
=
flags
.
search
;
if
(
isRegExpString
(
search
)
)
{
search
=
reFromString
(
search
)
;
}
// Check if we are receiving data from `stdin`...
if
(
!
stdinStream
.
isTTY
)
{
if
(
flags
.
split
)
{
if
(
!
isRegExpString
(
flags
.
split
)
)
{
flags
.
split
=
'/'
+
flags
.
split
+
'/'
;
}
split
=
reFromString
(
flags
.
split
)
;
}
else
{
split
=
RE_EOL
;
}
return
stdin
(
onRead
)
;
}
console
.
log
(
replace
(
args
[
0
]
,
search
,
flags
.
newval
)
)
;
// eslint-disable-line no-console
/**
* Callback invoked upon reading from `stdin`.
*
*
@private
*
@param
{
(Error|null)
} error - error object
*
@param
{
Buffer
} data - data
*
@returns
{
void
}
*/
function
onRead
(
error
,
data
)
{
var
lines
;
var
i
;
if
(
error
)
{
return
cli
.
error
(
error
)
;
}
lines
=
data
.
toString
(
)
.
split
(
split
)
;
// Remove any trailing separators (e.g., trailing newline)...
if
(
lines
[
lines
.
length
-
1
]
===
''
)
{
lines
.
pop
(
)
;
}
for
(
i
=
0
;
i
<
lines
.
length
;
i
++
)
{
console
.
log
(
replace
(
lines
[
i
]
,
search
,
flags
.
newval
)
)
;
// eslint-disable-line no-console
}
}
}
main
(
)
;
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