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vscode-java-debug/src/variableResoler.ts at andy_variable · maxandersen/vscode-java-debug · GitHub
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
import
*
as
_
from
"lodash"
;
import
*
as
path
from
"path"
;
import
*
as
vscode
from
"vscode"
;
export
interface
IProcessEnv
{
[
key
:
string
]
:
string
|
undefined
;
}
function
isWin
(
)
:
boolean
{
return
/
^
w
i
n
/
.
test
(
process
.
platform
)
;
}
function
hasDriveLetter
(
_path
:
string
)
:
boolean
{
return
isWindows
&&
_path
&&
_path
[
1
]
===
":"
;
}
function
normalizeDriveLetter
(
_path
:
string
)
:
string
{
if
(
hasDriveLetter
(
_path
)
)
{
return
_path
.
charAt
(
0
)
.
toUpperCase
(
)
+
_path
.
slice
(
1
)
;
}
return
_path
;
}
const
isWindows
=
isWin
(
)
;
export
class
VariableResolver
{
private
static
VARIABLE_REGEXP
=
/
\$
\{
(
.
*
?
)
\}
/
g
;
public
constructor
(
private
readonly
_envVariables
:
IProcessEnv
=
process
.
env
)
{
if
(
isWindows
)
{
this
.
_envVariables
=
Object
.
create
(
null
)
;
Object
.
keys
(
_envVariables
)
.
forEach
(
(
key
)
=>
{
this
.
_envVariables
[
key
.
toLowerCase
(
)
]
=
_envVariables
[
key
]
;
}
)
;
}
}
public
resolveString
(
folderUri
:
vscode
.
Uri
,
value
:
string
)
:
string
{
const
filePath
=
this
.
getFilePath
(
)
;
return
value
.
replace
(
VariableResolver
.
VARIABLE_REGEXP
,
(
match
:
string
,
variable
:
string
)
=>
{
let
argument
:
string
;
const
parts
=
variable
.
split
(
":"
)
;
if
(
parts
&&
parts
.
length
>
1
)
{
variable
=
parts
[
0
]
;
argument
=
parts
[
1
]
;
}
switch
(
variable
)
{
case
"env"
:
if
(
argument
)
{
if
(
isWindows
)
{
argument
=
argument
.
toLowerCase
(
)
;
}
const
env
=
this
.
_envVariables
[
argument
]
;
if
(
_
.
isString
(
env
)
)
{
return
env
;
}
// For `env` we should do the same as a normal shell does - evaluates missing envs to an empty string #46436
return
""
;
}
throw
new
Error
(
`missingEnvVarName: '
${
match
}
' can not be resolved because no environment variable name is given.`
)
;
case
"config"
:
if
(
argument
)
{
const
config
=
this
.
getConfigurationValue
(
folderUri
,
argument
)
;
if
(
_
.
isUndefined
(
config
)
||
_
.
isNull
(
config
)
)
{
throw
new
Error
(
`configNotFound: '
${
match
}
' can not be resolved because setting '
${
argument
}
' not found.`
)
;
}
if
(
_
.
isObject
(
config
)
)
{
throw
new
Error
(
`configNoString: '
${
match
}
' can not be resolved because '
${
argument
}
' is a structured value.`
)
;
}
return
config
;
}
throw
new
Error
(
`missingConfigName: '
${
match
}
' can not be resolved because no settings name is given.`
)
;
default
:
{
// common error handling for all variables that require an open folder and accept a folder name argument
switch
(
variable
)
{
case
"workspaceRoot"
:
case
"workspaceFolder"
:
case
"workspaceRootFolderName"
:
case
"workspaceFolderBasename"
:
case
"relativeFile"
:
if
(
argument
)
{
const
folder
=
this
.
getFolderUri
(
argument
)
;
if
(
folder
)
{
folderUri
=
folder
;
}
else
{
throw
new
Error
(
`canNotFindFolder: '
${
match
}
' can not be resolved. No such folder '
${
argument
}
'.`
)
;
}
}
if
(
!
folderUri
)
{
if
(
this
.
getWorkspaceFolderCount
(
)
>
1
)
{
throw
new
Error
(
`canNotResolveWorkspaceFolderMultiRoot: '
${
match
}
' `
+
`can not be resolved in a multi folder workspace. `
+
`Scope this variable using ":' and a workspace folder name.`
)
;
}
throw
new
Error
(
`canNotResolveWorkspaceFolder: '
${
match
}
' can not be resolved. Please open a folder.`
)
;
}
break
;
default
:
break
;
}
// common error handling for all variables that require an open file
switch
(
variable
)
{
case
"file"
:
case
"relativeFile"
:
case
"fileDirname"
:
case
"fileExtname"
:
case
"fileBasename"
:
case
"fileBasenameNoExtension"
:
if
(
!
filePath
)
{
throw
new
Error
(
`canNotResolveFile: '
${
match
}
' can not be resolved. Please open an editor.`
)
;
}
break
;
default
:
break
;
}
switch
(
variable
)
{
case
"workspaceRoot"
:
case
"workspaceFolder"
:
return
normalizeDriveLetter
(
folderUri
.
fsPath
)
;
case
"cwd"
:
return
folderUri
?
normalizeDriveLetter
(
folderUri
.
fsPath
)
:
process
.
cwd
(
)
;
case
"workspaceRootFolderName"
:
case
"workspaceFolderBasename"
:
return
path
.
basename
(
folderUri
.
fsPath
)
;
case
"lineNumber"
:
const
lineNumber
=
this
.
getLineNumber
(
)
;
if
(
lineNumber
)
{
return
lineNumber
;
}
throw
new
Error
(
`canNotResolveLineNumber: '
${
match
}
' can not be resolved.`
+
` Make sure to have a line selected in the active editor.`
)
;
case
"selectedText"
:
const
selectedText
=
this
.
getSelectedText
(
)
;
if
(
selectedText
)
{
return
selectedText
;
}
throw
new
Error
(
`canNotResolveSelectedText: '
${
match
}
' can not be resolved.`
+
` Make sure to have some text selected in the active editor.`
)
;
case
"file"
:
return
filePath
;
case
"relativeFile"
:
if
(
folderUri
)
{
return
path
.
normalize
(
path
.
relative
(
folderUri
.
fsPath
,
filePath
)
)
;
}
return
filePath
;
case
"fileDirname"
:
return
path
.
dirname
(
filePath
)
;
case
"fileExtname"
:
return
path
.
extname
(
filePath
)
;
case
"fileBasename"
:
return
path
.
basename
(
filePath
)
;
case
"fileBasenameNoExtension"
:
const
basename
=
path
.
basename
(
filePath
)
;
return
basename
.
slice
(
0
,
basename
.
length
-
path
.
extname
(
basename
)
.
length
)
;
case
"execPath"
:
const
ep
=
process
.
execPath
;
if
(
ep
)
{
return
ep
;
}
return
match
;
default
:
return
match
;
}
}
}
}
)
;
}
private
getFilePath
(
)
:
string
|
undefined
{
const
activeEditor
=
vscode
.
window
.
activeTextEditor
;
if
(
activeEditor
)
{
const
resource
=
activeEditor
.
document
.
uri
;
if
(
resource
.
scheme
===
"file"
)
{
return
path
.
normalize
(
resource
.
fsPath
)
;
}
}
return
undefined
;
}
private
getSelectedText
(
)
:
string
|
undefined
{
const
activeTextEditor
=
vscode
.
window
.
activeTextEditor
;
if
(
activeTextEditor
&&
activeTextEditor
.
selection
)
{
return
activeTextEditor
.
document
.
getText
(
activeTextEditor
.
selection
)
;
}
return
undefined
;
}
private
getLineNumber
(
)
:
string
|
undefined
{
const
activeTextEditor
=
vscode
.
window
.
activeTextEditor
;
if
(
activeTextEditor
&&
activeTextEditor
.
selection
)
{
return
String
(
activeTextEditor
.
selection
.
start
.
line
)
;
}
return
undefined
;
}
private
getConfigurationValue
(
folderUri
:
vscode
.
Uri
,
suffix
:
string
)
:
string
{
const
configuration
=
vscode
.
workspace
.
getConfiguration
(
undefined
,
folderUri
)
;
const
configValue
=
configuration
.
get
(
suffix
)
;
return
String
(
configValue
)
;
}
private
getWorkspaceFolderCount
(
)
:
number
{
return
vscode
.
workspace
.
workspaceFolders
.
length
;
}
private
getFolderUri
(
folderName
:
string
)
:
vscode
.
Uri
{
const
folder
=
vscode
.
workspace
.
workspaceFolders
.
filter
(
(
f
)
=>
f
.
name
===
folderName
)
.
pop
(
)
;
return
folder
?
folder
.
uri
:
undefined
;
}
}
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