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strings.FIelds: slight simplification.

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R=rsc
CC=golang-dev
https://golang.org/cl/833042
This commit is contained in:
Rob Pike 2010-03-29 13:39:16 -07:00
parent bd1690ce5e
commit 299cd38f0a
1 changed files with 5 additions and 4 deletions
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9
src/pkg/strings/strings.go
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@ -161,6 +161,7 @@ func SplitAfter(s, sep string, n int) []string {
// Fields splits the string s around each instance of one or more consecutive white space
// characters, returning an array of substrings of s or an empty list if s contains only white space.
func Fields(s string) []string {
// First count the fields.
n := 0
inField := false
for _, rune := range s {
@ -171,9 +172,10 @@ func Fields(s string) []string {
}
}
// Now create them.
a := make([]string, n)
na := 0
fieldStart := -1
fieldStart := -1 // Set to -1 when looking for start of field.
for i, rune := range s {
if unicode.IsSpace(rune) {
if fieldStart >= 0 {
@ -185,11 +187,10 @@ func Fields(s string) []string {
fieldStart = i
}
}
if fieldStart != -1 {
if fieldStart != -1 { // Last field might end at EOF.
a[na] = s[fieldStart:]
na++
}
return a[0:na]
return a
}
// Join concatenates the elements of a to create a single string. The separator string