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delve
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d75ac751
D
delve
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体验新版 GitCode,发现更多精彩内容 >>
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d75ac751
编写于
7月 11, 2015
作者:
D
Derek Parker
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
Replace hand-rolled cli interface with Cobra
上级
40284111
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
99 addition
and
109 deletion
+99
-109
cmd/dlv/main.go
cmd/dlv/main.go
+99
-109
未找到文件。
cmd/dlv/main.go
浏览文件 @
d75ac751
package
main
import
(
"flag"
"fmt"
"net"
"os"
...
...
@@ -15,115 +14,116 @@ import (
"github.com/derekparker/delve/service"
"github.com/derekparker/delve/service/rpc"
"github.com/derekparker/delve/terminal"
"github.com/spf13/cobra"
)
const
version
string
=
"0.5.0.beta"
var
usage
string
=
`Delve version %s
flags:
%s
Invoke with the path to a binary:
dlv ./path/to/prog
or use the following commands:
run - Build, run, and attach to program
test - Build test binary, run and attach to it
attach - Attach to running process
`
func
init
()
{
flag
.
Usage
=
help
}
var
(
Log
bool
Headless
bool
Addr
string
)
func
main
()
{
var
printv
,
printhelp
bool
var
addr
string
var
logEnabled
bool
var
headless
bool
flag
.
BoolVar
(
&
printv
,
"version"
,
false
,
"Print version number and exit."
)
flag
.
StringVar
(
&
addr
,
"addr"
,
"localhost:0"
,
"Debugging server listen address."
)
flag
.
BoolVar
(
&
logEnabled
,
"log"
,
false
,
"Enable debugging server logging."
)
flag
.
BoolVar
(
&
headless
,
"headless"
,
false
,
"Run in headless mode."
)
flag
.
Parse
()
if
flag
.
NFlag
()
==
0
&&
len
(
flag
.
Args
())
==
0
{
help
()
os
.
Exit
(
0
)
// Main dlv root command.
rootCommand
:=
&
cobra
.
Command
{
Use
:
"dlv"
,
Short
:
"Delve is a debugger for the Go programming language."
,
}
if
printv
{
fmt
.
Printf
(
"Delve version: %s
\n
"
,
version
)
os
.
Exit
(
0
)
rootCommand
.
Flags
()
.
StringVarP
(
&
Addr
,
"listen"
,
"l"
,
"localhost:0"
,
"Debugging server listen address."
)
rootCommand
.
Flags
()
.
BoolVarP
(
&
Log
,
"log"
,
""
,
false
,
"Enable debugging server logging."
)
rootCommand
.
Flags
()
.
BoolVarP
(
&
Headless
,
"headless"
,
""
,
false
,
"Run debug server only, in headless mode."
)
// 'version' subcommand.
versionCommand
:=
&
cobra
.
Command
{
Use
:
"version"
,
Short
:
"Prints version."
,
Run
:
func
(
cmd
*
cobra
.
Command
,
args
[]
string
)
{
fmt
.
Println
(
"Delve version: "
+
version
)
},
}
if
printhelp
{
help
()
os
.
Exit
(
0
)
rootCommand
.
AddCommand
(
versionCommand
)
// 'run' subcommand.
runCommand
:=
&
cobra
.
Command
{
Use
:
"run"
,
Short
:
"Compile and begin debugging program."
,
Long
:
`Compiles your program with optimizations disabled,
starts and attaches to it, and enable you to immediately begin debugging your program.`
,
Run
:
func
(
cmd
*
cobra
.
Command
,
args
[]
string
)
{
const
debugname
=
"debug"
goBuild
:=
exec
.
Command
(
"go"
,
"build"
,
"-o"
,
debugname
,
"-gcflags"
,
"-N -l"
)
goBuild
.
Stderr
=
os
.
Stderr
err
:=
goBuild
.
Run
()
if
err
!=
nil
{
os
.
Exit
(
1
)
}
fp
,
err
:=
filepath
.
Abs
(
"./"
+
debugname
)
if
err
!=
nil
{
fmt
.
Fprintf
(
os
.
Stderr
,
err
.
Error
())
os
.
Exit
(
1
)
}
processArgs
:=
append
([]
string
{
"./"
+
debugname
},
args
...
)
status
:=
execute
(
0
,
processArgs
)
os
.
Remove
(
fp
)
os
.
Exit
(
status
)
},
}
rootCommand
.
AddCommand
(
runCommand
)
// 'test' subcommand.
testCommand
:=
&
cobra
.
Command
{
Use
:
"test"
,
Short
:
"Compile test binary and begin debugging program."
,
Long
:
`Compiles a test binary with optimizations disabled,
starts and attaches to it, and enable you to immediately begin debugging your program.`
,
Run
:
func
(
cmd
*
cobra
.
Command
,
args
[]
string
)
{
wd
,
err
:=
os
.
Getwd
()
if
err
!=
nil
{
fmt
.
Fprintf
(
os
.
Stderr
,
err
.
Error
())
os
.
Exit
(
1
)
}
base
:=
filepath
.
Base
(
wd
)
goTest
:=
exec
.
Command
(
"go"
,
"test"
,
"-c"
,
"-gcflags"
,
"-N -l"
)
goTest
.
Stderr
=
os
.
Stderr
err
=
goTest
.
Run
()
if
err
!=
nil
{
os
.
Exit
(
1
)
}
debugname
:=
"./"
+
base
+
".test"
processArgs
:=
append
([]
string
{
debugname
},
args
...
)
status
:=
execute
(
0
,
processArgs
)
os
.
Remove
(
debugname
)
os
.
Exit
(
status
)
},
}
rootCommand
.
AddCommand
(
testCommand
)
// 'attach' subcommand.
attachCommand
:=
&
cobra
.
Command
{
Use
:
"attach [pid]"
,
Short
:
"Attach to running process and begin debugging."
,
Long
:
"Attach to running process and begin debugging."
,
Run
:
func
(
cmd
*
cobra
.
Command
,
args
[]
string
)
{
pid
,
err
:=
strconv
.
Atoi
(
args
[
0
])
if
err
!=
nil
{
fmt
.
Fprintf
(
os
.
Stderr
,
"Invalid pid: %d"
,
args
[
0
])
os
.
Exit
(
1
)
}
os
.
Exit
(
execute
(
pid
,
nil
))
},
}
rootCommand
.
AddCommand
(
attachCommand
)
defer
func
()
{
if
err
:=
recover
();
err
!=
nil
{
fmt
.
Fprintln
(
os
.
Stderr
,
err
)
os
.
Exit
(
1
)
}
}()
status
:=
run
(
addr
,
logEnabled
,
headless
)
fmt
.
Println
(
"[Hope I was of service hunting your bug!]"
)
os
.
Exit
(
status
)
rootCommand
.
Execute
()
}
func
run
(
addr
string
,
logEnabled
,
headless
bool
)
int
{
// Collect launch arguments
var
processArgs
[]
string
var
attachPid
int
switch
flag
.
Args
()[
0
]
{
case
"run"
:
const
debugname
=
"debug"
cmd
:=
exec
.
Command
(
"go"
,
"build"
,
"-o"
,
debugname
,
"-gcflags"
,
"-N -l"
)
err
:=
cmd
.
Run
()
if
err
!=
nil
{
fmt
.
Println
(
"Could not compile program:"
,
err
)
return
1
}
fp
,
err
:=
filepath
.
Abs
(
"./"
+
debugname
)
if
err
!=
nil
{
fmt
.
Println
(
err
)
return
1
}
defer
os
.
Remove
(
fp
)
processArgs
=
append
([]
string
{
"./"
+
debugname
},
flag
.
Args
()[
1
:
]
...
)
case
"test"
:
wd
,
err
:=
os
.
Getwd
()
if
err
!=
nil
{
fmt
.
Println
(
err
)
return
1
}
base
:=
filepath
.
Base
(
wd
)
cmd
:=
exec
.
Command
(
"go"
,
"test"
,
"-c"
,
"-gcflags"
,
"-N -l"
)
err
=
cmd
.
Run
()
if
err
!=
nil
{
fmt
.
Errorf
(
"Could not compile program: %s
\n
"
,
err
)
return
1
}
debugname
:=
"./"
+
base
+
".test"
defer
os
.
Remove
(
debugname
)
processArgs
=
append
([]
string
{
debugname
},
flag
.
Args
()[
1
:
]
...
)
case
"attach"
:
pid
,
err
:=
strconv
.
Atoi
(
flag
.
Args
()[
1
])
if
err
!=
nil
{
fmt
.
Errorf
(
"Invalid pid: %d"
,
flag
.
Args
()[
1
])
return
1
}
attachPid
=
pid
default
:
processArgs
=
flag
.
Args
()
}
func
execute
(
attachPid
int
,
processArgs
[]
string
)
int
{
// Make a TCP listener
listener
,
err
:=
net
.
Listen
(
"tcp"
,
a
ddr
)
listener
,
err
:=
net
.
Listen
(
"tcp"
,
A
ddr
)
if
err
!=
nil
{
fmt
.
Printf
(
"couldn't start listener: %s
\n
"
,
err
)
return
1
...
...
@@ -136,14 +136,14 @@ func run(addr string, logEnabled, headless bool) int {
Listener
:
listener
,
ProcessArgs
:
processArgs
,
AttachPid
:
attachPid
,
},
logEnabled
)
},
Log
)
if
err
:=
server
.
Run
();
err
!=
nil
{
fmt
.
Fprintln
(
os
.
Stderr
,
err
)
return
1
}
var
status
int
if
!
h
eadless
{
if
!
H
eadless
{
// Create and start a terminal
var
client
service
.
Client
client
=
rpc
.
NewClient
(
listener
.
Addr
()
.
String
())
...
...
@@ -162,13 +162,3 @@ func run(addr string, logEnabled, headless bool) int {
return
status
}
// help prints help text to os.Stderr.
func
help
()
{
flags
:=
""
flag
.
VisitAll
(
func
(
f
*
flag
.
Flag
)
{
doc
:=
fmt
.
Sprintf
(
" -%s=%s: %s
\n
"
,
f
.
Name
,
f
.
DefValue
,
f
.
Usage
)
flags
+=
doc
})
fmt
.
Fprintf
(
os
.
Stderr
,
usage
,
version
,
flags
)
}
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