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strings.Split: make the default to split all.

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Change the signature of Split to have no count,
assuming a full split, and rename the existing
Split with a count to SplitN.
Do the same to package bytes.
Add a gofix module.

R=adg, dsymonds, alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/4661051
This commit is contained in:
Rob Pike 2011-06-28 09:43:14 +10:00
parent 82a8afdf14
commit ebb1566a46
60 changed files with 296 additions and 120 deletions
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42
src/pkg/bytes/bytes.go
View file

@ -212,24 +212,38 @@ func genSplit(s, sep []byte, sepSave, n int) [][]byte {
return a[0 : na+1]
}
// Split slices s into subslices separated by sep and returns a slice of
// SplitN slices s into subslices separated by sep and returns a slice of
// the subslices between those separators.
// If sep is empty, SplitN splits after each UTF-8 sequence.
// The count determines the number of subslices to return:
// n > 0: at most n subslices; the last subslice will be the unsplit remainder.
// n == 0: the result is nil (zero subslices)
// n < 0: all subslices
func SplitN(s, sep []byte, n int) [][]byte { return genSplit(s, sep, 0, n) }
// SplitAfterN slices s into subslices after each instance of sep and
// returns a slice of those subslices.
// If sep is empty, SplitAfterN splits after each UTF-8 sequence.
// The count determines the number of subslices to return:
// n > 0: at most n subslices; the last subslice will be the unsplit remainder.
// n == 0: the result is nil (zero subslices)
// n < 0: all subslices
func SplitAfterN(s, sep []byte, n int) [][]byte {
return genSplit(s, sep, len(sep), n)
}
// Split slices s into all subslices separated by sep and returns a slice of
// the subslices between those separators.
// If sep is empty, Split splits after each UTF-8 sequence.
// The count determines the number of subslices to return:
// n > 0: at most n subslices; the last subslice will be the unsplit remainder.
// n == 0: the result is nil (zero subslices)
// n < 0: all subslices
func Split(s, sep []byte, n int) [][]byte { return genSplit(s, sep, 0, n) }
// It is equivalent to SplitN with a count of -1.
func Split(s, sep []byte) [][]byte { return genSplit(s, sep, 0, -1) }
// SplitAfter slices s into subslices after each instance of sep and
// SplitAfter slices s into all subslices after each instance of sep and
// returns a slice of those subslices.
// If sep is empty, Split splits after each UTF-8 sequence.
// The count determines the number of subslices to return:
// n > 0: at most n subslices; the last subslice will be the unsplit remainder.
// n == 0: the result is nil (zero subslices)
// n < 0: all subslices
func SplitAfter(s, sep []byte, n int) [][]byte {
return genSplit(s, sep, len(sep), n)
// If sep is empty, SplitAfter splits after each UTF-8 sequence.
// It is equivalent to SplitAfterN with a count of -1.
func SplitAfter(s, sep []byte) [][]byte {
return genSplit(s, sep, len(sep), -1)
}
// Fields splits the array s around each instance of one or more consecutive white space