Be consistent with os.File, strings.Reader, bytes.Reader, etc,
which all allow seeks past the end.
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/11403043
This only affects calls where both ReaderFrom and WriterTo are implemented. WriterTo can issue one large write, while ReaderFrom must Read until EOF, potentially reallocating when out of memory. With one large Write, the Writer only needs to allocate once.
This also helps in ioutil.Discard since we can avoid copying memory when the Reader implements WriterTo.
R=golang-dev, dsymonds, remyoudompheng, bradfitz
CC=golang-dev, minux.ma
https://golang.org/cl/9462044
Also add a new variable ErrNoProgress that io.Readers can use to
report ineffectual Read calls.
Fixes#5310.
R=golang-dev, dsymonds, bradfitz
CC=golang-dev
https://golang.org/cl/8845043
If a test can be placed in the same package ("internal"), it is placed
there. This facilitates testing of package-private details. Because of
dependency cycles some packages cannot be tested by internal tests.
R=golang-dev, rsc, mikioh.mikioh
CC=golang-dev, r
https://golang.org/cl/7323044
Changed accidentally in 28966b7b2f0c (CopyN using Copy).
Updating docs to be consistent with 29bf5ff5064e (ReadFull & ReadAtLeast)
R=rsc
CC=golang-dev
https://golang.org/cl/7314069
This is a backwards compatible API change that fixes broken code.
In Go 1.0, ReadFull(r, buf) could return either len(buf), nil or len(buf), non-nil.
Most code expects only the former, so do that and document the guarantee.
Code that was correct before is still correct.
Code that was incorrect before, by assuming the guarantee, is now correct too.
The same applies to ReadAtLeast.
Fixes#4544.
R=golang-dev, bradfitz, minux.ma
CC=golang-dev
https://golang.org/cl/7235074
caller of ioutil.TempFile() can use f.Name() to get "pathname"
of the temporary file, instead of just the "name" of the file.
Also remove an out-of-date comment about random number state.
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6649054
The set of errors forwarded by the os package varied with system and
was therefore non-portable.
Three helpers added for portable error checking: IsExist, IsNotExist, and IsPermission.
One or two more may need to come, but let's keep the set very small to discourage
thinking about errors that way.
R=mikioh.mikioh, gustavo, r, rsc
CC=golang-dev
https://golang.org/cl/5672047
- eliminate local Error type (a historical artifact)
- fix documentation of CopyN
- fix documentation of WriteString
Fixes#2859.
R=rsc, bradfitz
CC=golang-dev
https://golang.org/cl/5636046
Consequently, remove many package Makefiles,
and shorten the few that remain.
gomake becomes 'go tool make'.
Turn off test phases of run.bash that do not work,
flagged with $BROKEN. Future CLs will restore these,
but this seemed like a big enough CL already.
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5601057
Make the panic detectable, and use that in ioutil.ReadFile to
give an error if the file is too big.
R=golang-dev, minux.ma, bradfitz
CC=golang-dev
https://golang.org/cl/5563045
This is the result of running `gofix -r hashsum` over the tree, changing
the hash function implementations by hand and then fixing a couple of
instances where gofix didn't catch something.
The changed implementations are as simple as possible while still
working: I'm not trying to optimise in this CL.
R=rsc, cw, rogpeppe
CC=golang-dev
https://golang.org/cl/5448065
I had to replace the single use of io/ioutil
in the time package with a bytes.Buffer since
there would've been a dependency cycle.
There are no other uses of os.Time.
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5372054
This avoids allocation when writing to bytes.Buffers and bufio.Writers, for
example.
R=golang-dev, rsc, r, consalus, r
CC=golang-dev
https://golang.org/cl/4625068
