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JavaScript/Labs2022/code/node_modules/debug/src/common.js at main · islomalarov/JavaScript · GitHub
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debug
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src
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common.js
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"use strict"
;
/**
* This is the common logic for both the Node.js and web browser
* implementations of `debug()`.
*/
function
setup
(
env
)
{
createDebug
.
debug
=
createDebug
;
createDebug
.
default
=
createDebug
;
createDebug
.
coerce
=
coerce
;
createDebug
.
disable
=
disable
;
createDebug
.
enable
=
enable
;
createDebug
.
enabled
=
enabled
;
createDebug
.
humanize
=
require
(
'ms'
)
;
Object
.
keys
(
env
)
.
forEach
(
function
(
key
)
{
createDebug
[
key
]
=
env
[
key
]
;
}
)
;
/**
* Active `debug` instances.
*/
createDebug
.
instances
=
[
]
;
/**
* The currently active debug mode names, and names to skip.
*/
createDebug
.
names
=
[
]
;
createDebug
.
skips
=
[
]
;
/**
* Map of special "%n" handling functions, for the debug "format" argument.
*
* Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
*/
createDebug
.
formatters
=
{
}
;
/**
* Selects a color for a debug namespace
*
@param
{
String
} namespace The namespace string for the for the debug instance to be colored
*
@return
{
Number|String
} An ANSI color code for the given namespace
*
@api
private
*/
function
selectColor
(
namespace
)
{
var
hash
=
0
;
for
(
var
i
=
0
;
i
<
namespace
.
length
;
i
++
)
{
hash
=
(
hash
<<
5
)
-
hash
+
namespace
.
charCodeAt
(
i
)
;
hash
|=
0
;
// Convert to 32bit integer
}
return
createDebug
.
colors
[
Math
.
abs
(
hash
)
%
createDebug
.
colors
.
length
]
;
}
createDebug
.
selectColor
=
selectColor
;
/**
* Create a debugger with the given `namespace`.
*
*
@param
{
String
} namespace
*
@return
{
Function
}
*
@api
public
*/
function
createDebug
(
namespace
)
{
var
prevTime
;
function
debug
(
)
{
// Disabled?
if
(
!
debug
.
enabled
)
{
return
;
}
for
(
var
_len
=
arguments
.
length
,
args
=
new
Array
(
_len
)
,
_key
=
0
;
_key
<
_len
;
_key
++
)
{
args
[
_key
]
=
arguments
[
_key
]
;
}
var
self
=
debug
;
// Set `diff` timestamp
var
curr
=
Number
(
new
Date
(
)
)
;
var
ms
=
curr
-
(
prevTime
||
curr
)
;
self
.
diff
=
ms
;
self
.
prev
=
prevTime
;
self
.
curr
=
curr
;
prevTime
=
curr
;
args
[
0
]
=
createDebug
.
coerce
(
args
[
0
]
)
;
if
(
typeof
args
[
0
]
!==
'string'
)
{
// Anything else let's inspect with %O
args
.
unshift
(
'%O'
)
;
}
// Apply any `formatters` transformations
var
index
=
0
;
args
[
0
]
=
args
[
0
]
.
replace
(
/
%
(
[
a
-
z
A
-
Z
%
]
)
/
g
,
function
(
match
,
format
)
{
// If we encounter an escaped % then don't increase the array index
if
(
match
===
'%%'
)
{
return
match
;
}
index
++
;
var
formatter
=
createDebug
.
formatters
[
format
]
;
if
(
typeof
formatter
===
'function'
)
{
var
val
=
args
[
index
]
;
match
=
formatter
.
call
(
self
,
val
)
;
// Now we need to remove `args[index]` since it's inlined in the `format`
args
.
splice
(
index
,
1
)
;
index
--
;
}
return
match
;
}
)
;
// Apply env-specific formatting (colors, etc.)
createDebug
.
formatArgs
.
call
(
self
,
args
)
;
var
logFn
=
self
.
log
||
createDebug
.
log
;
logFn
.
apply
(
self
,
args
)
;
}
debug
.
namespace
=
namespace
;
debug
.
enabled
=
createDebug
.
enabled
(
namespace
)
;
debug
.
useColors
=
createDebug
.
useColors
(
)
;
debug
.
color
=
selectColor
(
namespace
)
;
debug
.
destroy
=
destroy
;
debug
.
extend
=
extend
;
// Debug.formatArgs = formatArgs;
// debug.rawLog = rawLog;
// env-specific initialization logic for debug instances
if
(
typeof
createDebug
.
init
===
'function'
)
{
createDebug
.
init
(
debug
)
;
}
createDebug
.
instances
.
push
(
debug
)
;
return
debug
;
}
function
destroy
(
)
{
var
index
=
createDebug
.
instances
.
indexOf
(
this
)
;
if
(
index
!==
-
1
)
{
createDebug
.
instances
.
splice
(
index
,
1
)
;
return
true
;
}
return
false
;
}
function
extend
(
namespace
,
delimiter
)
{
return
createDebug
(
this
.
namespace
+
(
typeof
delimiter
===
'undefined'
?
':'
:
delimiter
)
+
namespace
)
;
}
/**
* Enables a debug mode by namespaces. This can include modes
* separated by a colon and wildcards.
*
*
@param
{
String
} namespaces
*
@api
public
*/
function
enable
(
namespaces
)
{
createDebug
.
save
(
namespaces
)
;
createDebug
.
names
=
[
]
;
createDebug
.
skips
=
[
]
;
var
i
;
var
split
=
(
typeof
namespaces
===
'string'
?
namespaces
:
''
)
.
split
(
/
[
\s
,
]
+
/
)
;
var
len
=
split
.
length
;
for
(
i
=
0
;
i
<
len
;
i
++
)
{
if
(
!
split
[
i
]
)
{
// ignore empty strings
continue
;
}
namespaces
=
split
[
i
]
.
replace
(
/
\*
/
g
,
'.*?'
)
;
if
(
namespaces
[
0
]
===
'-'
)
{
createDebug
.
skips
.
push
(
new
RegExp
(
'^'
+
namespaces
.
substr
(
1
)
+
'$'
)
)
;
}
else
{
createDebug
.
names
.
push
(
new
RegExp
(
'^'
+
namespaces
+
'$'
)
)
;
}
}
for
(
i
=
0
;
i
<
createDebug
.
instances
.
length
;
i
++
)
{
var
instance
=
createDebug
.
instances
[
i
]
;
instance
.
enabled
=
createDebug
.
enabled
(
instance
.
namespace
)
;
}
}
/**
* Disable debug output.
*
*
@api
public
*/
function
disable
(
)
{
createDebug
.
enable
(
''
)
;
}
/**
* Returns true if the given mode name is enabled, false otherwise.
*
*
@param
{
String
} name
*
@return
{
Boolean
}
*
@api
public
*/
function
enabled
(
name
)
{
if
(
name
[
name
.
length
-
1
]
===
'*'
)
{
return
true
;
}
var
i
;
var
len
;
for
(
i
=
0
,
len
=
createDebug
.
skips
.
length
;
i
<
len
;
i
++
)
{
if
(
createDebug
.
skips
[
i
]
.
test
(
name
)
)
{
return
false
;
}
}
for
(
i
=
0
,
len
=
createDebug
.
names
.
length
;
i
<
len
;
i
++
)
{
if
(
createDebug
.
names
[
i
]
.
test
(
name
)
)
{
return
true
;
}
}
return
false
;
}
/**
* Coerce `val`.
*
*
@param
{
Mixed
} val
*
@return
{
Mixed
}
*
@api
private
*/
function
coerce
(
val
)
{
if
(
val
instanceof
Error
)
{
return
val
.
stack
||
val
.
message
;
}
return
val
;
}
createDebug
.
enable
(
createDebug
.
load
(
)
)
;
return
createDebug
;
}
module
.
exports
=
setup
;
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