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go
golang
Commits
91672686
Commit
91672686
authored
Feb 17, 2012
by
Mike Rosset
Committed by
Rob Pike
Feb 17, 2012
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doc: provide example filepath.Walk for go1
R=golang-dev, r, r CC=golang-dev
https://golang.org/cl/5674067
parent
785ee50c
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3 changed files
with
39 additions
and
8 deletions
+39
-8
go1.html
doc/go1.html
+16
-4
go1.tmpl
doc/go1.tmpl
+2
-4
go1.go
doc/progs/go1.go
+21
-0
No files found.
doc/go1.html
View file @
91672686
...
...
@@ -1540,12 +1540,24 @@ instead of a <code>Visitor</code> interface value.
The
<code>
WalkFunc
</code>
function will be called even for files or directories that could not be opened;
in such cases the error argument will describe the failure.
If a directory's contents are to be skipped,
the function should return the value
<
code>
SkipDir
</code>
.
the function should return the value
<
a
href=
"/pkg/path/filepath/#variables"
><code>
filepath.SkipDir
</code></a>
</p>
<p>
<font
color=
"red"
>
TODO: add an example?
</font>
</p>
<pre>
<!--{{code "progs/go1.go" `/STARTWALK/` `/ENDWALK/`}}
-->
markFn := func(path string, info os.FileInfo, err error) error {
if path ==
"
pictures
"
{ // Will skip walking of directory pictures and its contents.
return filepath.SkipDir
}
if err != nil {
return err
}
log.Println(path)
return nil
}
err := filepath.Walk(
"
.
"
, markFn)
if err != nil {
log.Fatal(err)
}
</pre>
<p>
<em>
Updating
</em>
:
...
...
doc/go1.tmpl
View file @
91672686
...
...
@@ -1439,12 +1439,10 @@ instead of a <code>Visitor</code> interface value.
The <code>WalkFunc</code> function will be called even for files or directories that could not be opened;
in such cases the error argument will describe the failure.
If a directory'
s
contents
are
to
be
skipped
,
the
function
should
return
the
value
<
code
>
SkipDir
</
code
>.
the
function
should
return
the
value
<
a
href
=
"/pkg/path/filepath/#variables"
><
code
>
filepath
.
SkipDir
</
code
></
a
>
</
p
>
<
p
>
<
font
color
=
"red"
>
TODO
:
add
an
example
?</
font
>
</
p
>
{{
code
"progs/go1.go"
`/
STARTWALK
/`
`/
ENDWALK
/`}}
<
p
>
<
em
>
Updating
</
em
>:
...
...
doc/progs/go1.go
View file @
91672686
...
...
@@ -12,6 +12,7 @@ import (
"fmt"
"log"
"os"
"path/filepath"
"testing"
"time"
"unicode"
...
...
@@ -28,6 +29,7 @@ func main() {
runeType
()
errorExample
()
timePackage
()
walkExample
()
osIsExist
()
}
...
...
@@ -183,6 +185,25 @@ func timePackage() {
sleepUntil
(
time
.
Now
()
.
Add
(
123
*
time
.
Millisecond
))
}
func
walkExample
()
{
// STARTWALK OMIT
markFn
:=
func
(
path
string
,
info
os
.
FileInfo
,
err
error
)
error
{
if
path
==
"pictures"
{
// Will skip walking of directory pictures and its contents.
return
filepath
.
SkipDir
}
if
err
!=
nil
{
return
err
}
log
.
Println
(
path
)
return
nil
}
err
:=
filepath
.
Walk
(
"."
,
markFn
)
if
err
!=
nil
{
log
.
Fatal
(
err
)
}
// ENDWALK OMIT
}
func
initializationFunction
(
c
chan
int
)
{
c
<-
1
}
...
...
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