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strings and bytes.Split: make count of 0 mean 0, not infinite.

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Use a count of -1 for infinity.  Ditto for Replace.

R=rsc
CC=golang-dev
https://golang.org/cl/1704044
This commit is contained in:
Rob Pike 2010-07-01 14:08:14 -07:00
parent 285312a05c
commit 38f1231f3e
24 changed files with 123 additions and 98 deletions
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6
src/cmd/cgo/gcc.go
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@ -27,7 +27,7 @@ func (p *Prog) loadDebugInfo() {
b.WriteString(p.Preamble)
stdout := p.gccPostProc(b.Bytes())
defines := make(map[string]string)
for _, line := range strings.Split(stdout, "\n", 0) {
for _, line := range strings.Split(stdout, "\n", -1) {
if len(line) < 9 || line[0:7] != "#define" {
continue
}
@ -110,7 +110,7 @@ func (p *Prog) loadDebugInfo() {
if stderr == "" {
fatal("gcc produced no output")
}
for _, line := range strings.Split(stderr, "\n", 0) {
for _, line := range strings.Split(stderr, "\n", -1) {
if len(line) < 9 || line[0:9] != "cgo-test:" {
continue
}
@ -631,7 +631,7 @@ func (c *typeConv) Type(dtype dwarf.Type) *Type {
if ss, ok := cnameMap[s]; ok {
s = ss
}
s = strings.Join(strings.Split(s, " ", 0), "") // strip spaces
s = strings.Join(strings.Split(s, " ", -1), "") // strip spaces
name := c.Ident("_C_" + s)
c.typedef[name.Name()] = t.Go
t.Go = name

4
src/cmd/godoc/godoc.go
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@ -338,8 +338,8 @@ func (dir *Directory) lookupLocal(name string) *Directory {
// lookup looks for the *Directory for a given path, relative to dir.
func (dir *Directory) lookup(path string) *Directory {
d := strings.Split(dir.Path, "/", 0)
p := strings.Split(path, "/", 0)
d := strings.Split(dir.Path, "/", -1)
p := strings.Split(path, "/", -1)
i := 0
for i < len(d) {
if i >= len(p) || d[i] != p[i] {

2
src/cmd/godoc/index.go
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@ -709,7 +709,7 @@ func isIdentifier(s string) bool {
// identifier, Lookup returns a LookupResult, and a list of alternative
// spellings, if any. If the query syntax is wrong, illegal is set.
func (x *Index) Lookup(query string) (match *LookupResult, alt *AltWords, illegal bool) {
ss := strings.Split(query, ".", 0)
ss := strings.Split(query, ".", -1)
// check query syntax
for _, s := range ss {

2
src/cmd/godoc/mapping.go
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@ -77,7 +77,7 @@ type mapping struct {
func (m *Mapping) Init(paths string) {
cwd, _ := os.Getwd() // ignore errors
pathlist := strings.Split(paths, ":", 0)
pathlist := strings.Split(paths, ":", -1)
list := make([]mapping, len(pathlist))
n := 0 // number of mappings

2
src/cmd/gofmt/rewrite.go
View File

@ -21,7 +21,7 @@ func initRewrite() {
if *rewriteRule == "" {
return
}
f := strings.Split(*rewriteRule, "->", 0)
f := strings.Split(*rewriteRule, "->", -1)
if len(f) != 2 {
fmt.Fprintf(os.Stderr, "rewrite rule must be of the form 'pattern -> replacement'\n")
os.Exit(2)

2
src/cmd/hgpatch/main.go
View File

@ -283,7 +283,7 @@ func hgModified() ([]string, os.Error) {
if err != nil {
return nil, err
}
return strings.Split(strings.TrimSpace(out), "\n", 0), nil
return strings.Split(strings.TrimSpace(out), "\n", -1), nil
}
// hgAdd adds name to the repository.

2
src/pkg/asn1/common.go
View File

@ -78,7 +78,7 @@ type fieldParameters struct {
// parseFieldParameters will parse it into a fieldParameters structure,
// ignoring unknown parts of the string.
func parseFieldParameters(str string) (ret fieldParameters) {
for _, part := range strings.Split(str, ",", 0) {
for _, part := range strings.Split(str, ",", -1) {
switch {
case part == "optional":
ret.optional = true

16
src/pkg/bytes/bytes.go
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@ -154,10 +154,13 @@ func IndexAny(s []byte, chars string) int {
// Generic split: splits after each instance of sep,
// including sepSave bytes of sep in the subarrays.
func genSplit(s, sep []byte, sepSave, n int) [][]byte {
if n == 0 {
return nil
}
if len(sep) == 0 {
return explode(s, n)
}
if n <= 0 {
if n < 0 {
n = Count(s, sep) + 1
}
c := sep[0]
@ -178,13 +181,15 @@ func genSplit(s, sep []byte, sepSave, n int) [][]byte {
// Split splits the array s around each instance of sep, returning an array of subarrays of s.
// If sep is empty, Split splits s after each UTF-8 sequence.
// If n > 0, Split splits s into at most n subarrays; the last subarray will contain an unsplit remainder.
// If n >= 0, Split splits s into at most n subarrays; the last subarray will contain an unsplit remainder.
// Thus if n == 0, the result will ne nil.
func Split(s, sep []byte, n int) [][]byte { return genSplit(s, sep, 0, n) }
// SplitAfter splits the array s after each instance of sep, returning an array of subarrays of s.
// If sep is empty, SplitAfter splits s after each UTF-8 sequence.
// If n > 0, SplitAfter splits s into at most n subarrays; the last subarray will contain an
// If n >= 0, SplitAfter splits s into at most n subarrays; the last subarray will contain an
// unsplit remainder.
// Thus if n == 0, the result will ne nil.
func SplitAfter(s, sep []byte, n int) [][]byte {
return genSplit(s, sep, len(sep), n)
}
@ -465,8 +470,11 @@ func Runes(s []byte) []int {
// Replace returns a copy of the slice s with the first n
// non-overlapping instances of old replaced by new.
// If n <= 0, there is no limit on the number of replacements.
// If n < 0, there is no limit on the number of replacements.
func Replace(s, old, new []byte, n int) []byte {
if n == 0 {
return s // avoid allocation
}
// Compute number of replacements.
if m := Count(s, old); m == 0 {
return s // avoid allocation

64
src/pkg/bytes/bytes_test.go
View File

@ -211,8 +211,8 @@ type ExplodeTest struct {
}
var explodetests = []ExplodeTest{
ExplodeTest{abcd, 0, []string{"a", "b", "c", "d"}},
ExplodeTest{faces, 0, []string{"☺", "☻", "☹"}},
ExplodeTest{abcd, -1, []string{"a", "b", "c", "d"}},
ExplodeTest{faces, -1, []string{"☺", "☻", "☹"}},
ExplodeTest{abcd, 2, []string{"a", "bcd"}},
}
@ -240,16 +240,16 @@ type SplitTest struct {
}
var splittests = []SplitTest{
SplitTest{abcd, "a", 0, []string{"", "bcd"}},
SplitTest{abcd, "z", 0, []string{"abcd"}},
SplitTest{abcd, "", 0, []string{"a", "b", "c", "d"}},
SplitTest{commas, ",", 0, []string{"1", "2", "3", "4"}},
SplitTest{dots, "...", 0, []string{"1", ".2", ".3", ".4"}},
SplitTest{faces, "☹", 0, []string{"☺☻", ""}},
SplitTest{faces, "~", 0, []string{faces}},
SplitTest{faces, "", 0, []string{"☺", "☻", "☹"}},
SplitTest{abcd, "a", 0, nil},
SplitTest{abcd, "a", -1, []string{"", "bcd"}},
SplitTest{abcd, "z", -1, []string{"abcd"}},
SplitTest{abcd, "", -1, []string{"a", "b", "c", "d"}},
SplitTest{commas, ",", -1, []string{"1", "2", "3", "4"}},
SplitTest{dots, "...", -1, []string{"1", ".2", ".3", ".4"}},
SplitTest{faces, "☹", -1, []string{"☺☻", ""}},
SplitTest{faces, "~", -1, []string{faces}},
SplitTest{faces, "", -1, []string{"☺", "☻", "☹"}},
SplitTest{"1 2 3 4", " ", 3, []string{"1", "2", "3 4"}},
SplitTest{"1 2 3", " ", 3, []string{"1", "2", "3"}},
SplitTest{"1 2", " ", 3, []string{"1", "2"}},
SplitTest{"123", "", 2, []string{"1", "23"}},
SplitTest{"123", "", 17, []string{"1", "2", "3"}},
@ -263,6 +263,9 @@ func TestSplit(t *testing.T) {
t.Errorf(`Split(%q, %q, %d) = %v; want %v`, tt.s, tt.sep, tt.n, result, tt.a)
continue
}
if tt.n == 0 {
continue
}
s := Join(a, []byte(tt.sep))
if string(s) != tt.s {
t.Errorf(`Join(Split(%q, %q, %d), %q) = %q`, tt.s, tt.sep, tt.n, tt.sep, s)
@ -271,14 +274,14 @@ func TestSplit(t *testing.T) {
}
var splitaftertests = []SplitTest{
SplitTest{abcd, "a", 0, []string{"a", "bcd"}},
SplitTest{abcd, "z", 0, []string{"abcd"}},
SplitTest{abcd, "", 0, []string{"a", "b", "c", "d"}},
SplitTest{commas, ",", 0, []string{"1,", "2,", "3,", "4"}},
SplitTest{dots, "...", 0, []string{"1...", ".2...", ".3...", ".4"}},
SplitTest{faces, "☹", 0, []string{"☺☻☹", ""}},
SplitTest{faces, "~", 0, []string{faces}},
SplitTest{faces, "", 0, []string{"☺", "☻", "☹"}},
SplitTest{abcd, "a", -1, []string{"a", "bcd"}},
SplitTest{abcd, "z", -1, []string{"abcd"}},
SplitTest{abcd, "", -1, []string{"a", "b", "c", "d"}},
SplitTest{commas, ",", -1, []string{"1,", "2,", "3,", "4"}},
SplitTest{dots, "...", -1, []string{"1...", ".2...", ".3...", ".4"}},
SplitTest{faces, "☹", -1, []string{"☺☻☹", ""}},
SplitTest{faces, "~", -1, []string{faces}},
SplitTest{faces, "", -1, []string{"☺", "☻", "☹"}},
SplitTest{"1 2 3 4", " ", 3, []string{"1 ", "2 ", "3 4"}},
SplitTest{"1 2 3", " ", 3, []string{"1 ", "2 ", "3"}},
SplitTest{"1 2", " ", 3, []string{"1 ", "2"}},
@ -654,24 +657,25 @@ type ReplaceTest struct {
}
var ReplaceTests = []ReplaceTest{
ReplaceTest{"hello", "l", "L", 0, "heLLo"},
ReplaceTest{"hello", "x", "X", 0, "hello"},
ReplaceTest{"", "x", "X", 0, ""},
ReplaceTest{"radar", "r", "<r>", 0, "<r>ada<r>"},
ReplaceTest{"", "", "<>", 0, "<>"},
ReplaceTest{"banana", "a", "<>", 0, "b<>n<>n<>"},
ReplaceTest{"hello", "l", "L", 0, "hello"},
ReplaceTest{"hello", "l", "L", -1, "heLLo"},
ReplaceTest{"hello", "x", "X", -1, "hello"},
ReplaceTest{"", "x", "X", -1, ""},
ReplaceTest{"radar", "r", "<r>", -1, "<r>ada<r>"},
ReplaceTest{"", "", "<>", -1, "<>"},
ReplaceTest{"banana", "a", "<>", -1, "b<>n<>n<>"},
ReplaceTest{"banana", "a", "<>", 1, "b<>nana"},
ReplaceTest{"banana", "a", "<>", 1000, "b<>n<>n<>"},
ReplaceTest{"banana", "an", "<>", 0, "b<><>a"},
ReplaceTest{"banana", "ana", "<>", 0, "b<>na"},
ReplaceTest{"banana", "", "<>", 0, "<>b<>a<>n<>a<>n<>a<>"},
ReplaceTest{"banana", "an", "<>", -1, "b<><>a"},
ReplaceTest{"banana", "ana", "<>", -1, "b<>na"},
ReplaceTest{"banana", "", "<>", -1, "<>b<>a<>n<>a<>n<>a<>"},
ReplaceTest{"banana", "", "<>", 10, "<>b<>a<>n<>a<>n<>a<>"},
ReplaceTest{"banana", "", "<>", 6, "<>b<>a<>n<>a<>n<>a"},
ReplaceTest{"banana", "", "<>", 5, "<>b<>a<>n<>a<>na"},
ReplaceTest{"banana", "", "<>", 1, "<>banana"},
ReplaceTest{"banana", "a", "a", 0, "banana"},
ReplaceTest{"banana", "a", "a", -1, "banana"},
ReplaceTest{"banana", "a", "a", 1, "banana"},
ReplaceTest{"☺☻☹", "", "<>", 0, "<>☺<>☻<>☹<>"},
ReplaceTest{"☺☻☹", "", "<>", -1, "<>☺<>☻<>☹<>"},
}
func TestReplace(t *testing.T) {

4
src/pkg/crypto/x509/x509.go
View File

@ -407,8 +407,8 @@ func matchHostnames(pattern, host string) bool {
return false
}
patternParts := strings.Split(pattern, ".", 0)
hostParts := strings.Split(host, ".", 0)
patternParts := strings.Split(pattern, ".", -1)
hostParts := strings.Split(host, ".", -1)
if len(patternParts) != len(hostParts) {
return false

2
src/pkg/exec/exec.go
View File

@ -208,7 +208,7 @@ func LookPath(file string) (string, os.Error) {
return "", os.ENOENT
}
pathenv := os.Getenv("PATH")
for _, dir := range strings.Split(pathenv, ":", 0) {
for _, dir := range strings.Split(pathenv, ":", -1) {
if dir == "" {
// Unix shell semantics: path element "" means "."
dir = "."

2
src/pkg/exp/nacl/srpc/client.go
View File

@ -67,7 +67,7 @@ func NewClient(fd int) (c *Client, err os.Error) {
log.Stderrf("NewClient service_discovery: %s", m.status)
return nil, m.status
}
for n, line := range bytes.Split(m.Ret[0].([]byte), []byte{'\n'}, 0) {
for n, line := range bytes.Split(m.Ret[0].([]byte), []byte{'\n'}, -1) {
i := bytes.Index(line, []byte{':'})
if i < 0 {
continue

2
src/pkg/exp/ogle/cmd.go
View File

@ -153,7 +153,7 @@ func cmdLoad(args []byte) os.Error {
}
println("Attached to", pid)
} else {
parts := strings.Split(path, " ", 0)
parts := strings.Split(path, " ", -1)
if len(parts) == 0 {
fname = ""
} else {

2
src/pkg/go/doc/comment.go
View File

@ -59,7 +59,7 @@ func CommentText(comment *ast.CommentGroup) string {
}
// Split on newlines.
cl := strings.Split(c, "\n", 0)
cl := strings.Split(c, "\n", -1)
// Walk lines, stripping trailing white space and adding to list.
for _, l := range cl {

2
src/pkg/http/request.go
View File

@ -568,7 +568,7 @@ func ReadRequest(b *bufio.Reader) (req *Request, err os.Error) {
func ParseQuery(query string) (m map[string][]string, err os.Error) {
m = make(map[string][]string)
for _, kv := range strings.Split(query, "&", 0) {
for _, kv := range strings.Split(query, "&", -1) {
kvPair := strings.Split(kv, "=", 2)
var key, value string

4
src/pkg/http/transfer.go
View File

@ -269,7 +269,7 @@ func fixTransferEncoding(header map[string]string) ([]string, os.Error) {
}
header["Transfer-Encoding"] = "", false
encodings := strings.Split(raw, ",", 0)
encodings := strings.Split(raw, ",", -1)
te := make([]string, 0, len(encodings))
// TODO: Even though we only support "identity" and "chunked"
// encodings, the loop below is designed with foresight. One
@ -373,7 +373,7 @@ func fixTrailer(header map[string]string, te []string) (map[string]string, os.Er
header["Trailer"] = "", false
trailer := make(map[string]string)
keys := strings.Split(raw, ",", 0)
keys := strings.Split(raw, ",", -1)
for _, key := range keys {
key = CanonicalHeaderKey(strings.TrimSpace(key))
switch key {

4
src/pkg/nntp/nntp_test.go
View File

@ -31,8 +31,8 @@ func (f faker) Close() os.Error {
}
func TestBasic(t *testing.T) {
basicServer = strings.Join(strings.Split(basicServer, "\n", 0), "\r\n")
basicClient = strings.Join(strings.Split(basicClient, "\n", 0), "\r\n")
basicServer = strings.Join(strings.Split(basicServer, "\n", -1), "\r\n")
basicClient = strings.Join(strings.Split(basicClient, "\n", -1), "\r\n")
var cmdbuf bytes.Buffer
var fake faker

2
src/pkg/patch/patch.go
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@ -319,4 +319,4 @@ func hasPrefix(s []byte, t string) bool {
// splitLines returns the result of splitting s into lines.
// The \n on each line is preserved.
func splitLines(s []byte) [][]byte { return bytes.SplitAfter(s, newline, 0) }
func splitLines(s []byte) [][]byte { return bytes.SplitAfter(s, newline, -1) }

2
src/pkg/rpc/server.go
View File

@ -352,7 +352,7 @@ func (server *serverType) input(codec ServerCodec) {
sendResponse(sending, req, invalidRequest, codec, s)
break
}
serviceMethod := strings.Split(req.ServiceMethod, ".", 0)
serviceMethod := strings.Split(req.ServiceMethod, ".", -1)
if len(serviceMethod) != 2 {
s := "rpc: service/method request ill-formed: " + req.ServiceMethod
sendResponse(sending, req, invalidRequest, codec, s)

2
src/pkg/strconv/fp_test.go
View File

@ -116,7 +116,7 @@ func TestFp(t *testing.T) {
if len(line) == 0 || line[0] == '#' {
continue
}
a := strings.Split(line, " ", 0)
a := strings.Split(line, " ", -1)
if len(a) != 4 {
t.Error("testfp.txt:", lineno, ": wrong field count\n")
continue

22
src/pkg/strings/strings.go
View File

@ -10,9 +10,12 @@ import (
"utf8"
)
// explode splits s into an array of UTF-8 sequences, one per Unicode character (still strings) up to a maximum of n (n <= 0 means no limit).
// explode splits s into an array of UTF-8 sequences, one per Unicode character (still strings) up to a maximum of n (n < 0 means no limit).
// Invalid UTF-8 sequences become correct encodings of U+FFF8.
func explode(s string, n int) []string {
if n == 0 {
return nil
}
l := utf8.RuneCountInString(s)
if n <= 0 || n > l {
n = l
@ -135,10 +138,13 @@ func IndexAny(s, chars string) int {
// Generic split: splits after each instance of sep,
// including sepSave bytes of sep in the subarrays.
func genSplit(s, sep string, sepSave, n int) []string {
if n == 0 {
return nil
}
if sep == "" {
return explode(s, n)
}
if n <= 0 {
if n < 0 {
n = Count(s, sep) + 1
}
c := sep[0]
@ -159,12 +165,14 @@ func genSplit(s, sep string, sepSave, n int) []string {
// Split splits the string s around each instance of sep, returning an array of substrings of s.
// If sep is empty, Split splits s after each UTF-8 sequence.
// If n > 0, Split splits s into at most n substrings; the last substring will be the unsplit remainder.
// If n >= 0, Split splits s into at most n substrings; the last substring will be the unsplit remainder.
// Thus if n == 0, the result will be nil.
func Split(s, sep string, n int) []string { return genSplit(s, sep, 0, n) }
// SplitAfter splits the string s after each instance of sep, returning an array of substrings of s.
// If sep is empty, SplitAfter splits s after each UTF-8 sequence.
// If n > 0, SplitAfter splits s into at most n substrings; the last substring will be the unsplit remainder.
// If n >= 0, SplitAfter splits s into at most n substrings; the last substring will be the unsplit remainder.
// Thus if n == 0, the result will be nil.
func SplitAfter(s, sep string, n int) []string {
return genSplit(s, sep, len(sep), n)
}
@ -462,16 +470,16 @@ func TrimSpace(s string) string {
// Replace returns a copy of the string s with the first n
// non-overlapping instances of old replaced by new.
// If n <= 0, there is no limit on the number of replacements.
// If n < 0, there is no limit on the number of replacements.
func Replace(s, old, new string, n int) string {
if old == new {
if old == new || n == 0 {
return s // avoid allocation
}
// Compute number of replacements.
if m := Count(s, old); m == 0 {
return s // avoid allocation
} else if n <= 0 || m < n {
} else if n < 0 || m < n {
n = m
}

63
src/pkg/strings/strings_test.go
View File

@ -136,14 +136,15 @@ type SplitTest struct {
}
var splittests = []SplitTest{
SplitTest{abcd, "a", 0, []string{"", "bcd"}},
SplitTest{abcd, "z", 0, []string{"abcd"}},
SplitTest{abcd, "", 0, []string{"a", "b", "c", "d"}},
SplitTest{commas, ",", 0, []string{"1", "2", "3", "4"}},
SplitTest{dots, "...", 0, []string{"1", ".2", ".3", ".4"}},
SplitTest{faces, "☹", 0, []string{"☺☻", ""}},
SplitTest{faces, "~", 0, []string{faces}},
SplitTest{faces, "", 0, []string{"☺", "☻", "☹"}},
SplitTest{abcd, "a", 0, nil},
SplitTest{abcd, "a", -1, []string{"", "bcd"}},
SplitTest{abcd, "z", -1, []string{"abcd"}},
SplitTest{abcd, "", -1, []string{"a", "b", "c", "d"}},
SplitTest{commas, ",", -1, []string{"1", "2", "3", "4"}},
SplitTest{dots, "...", -1, []string{"1", ".2", ".3", ".4"}},
SplitTest{faces, "☹", -1, []string{"☺☻", ""}},
SplitTest{faces, "~", -1, []string{faces}},
SplitTest{faces, "", -1, []string{"☺", "☻", "☹"}},
SplitTest{"1 2 3 4", " ", 3, []string{"1", "2", "3 4"}},
SplitTest{"1 2", " ", 3, []string{"1", "2"}},
SplitTest{"123", "", 2, []string{"1", "23"}},
@ -157,6 +158,9 @@ func TestSplit(t *testing.T) {
t.Errorf("Split(%q, %q, %d) = %v; want %v", tt.s, tt.sep, tt.n, a, tt.a)
continue
}
if tt.n == 0 {
continue
}
s := Join(a, tt.sep)
if s != tt.s {
t.Errorf("Join(Split(%q, %q, %d), %q) = %q", tt.s, tt.sep, tt.n, tt.sep, s)
@ -165,14 +169,14 @@ func TestSplit(t *testing.T) {
}
var splitaftertests = []SplitTest{
SplitTest{abcd, "a", 0, []string{"a", "bcd"}},
SplitTest{abcd, "z", 0, []string{"abcd"}},
SplitTest{abcd, "", 0, []string{"a", "b", "c", "d"}},
SplitTest{commas, ",", 0, []string{"1,", "2,", "3,", "4"}},
SplitTest{dots, "...", 0, []string{"1...", ".2...", ".3...", ".4"}},
SplitTest{faces, "☹", 0, []string{"☺☻☹", ""}},
SplitTest{faces, "~", 0, []string{faces}},
SplitTest{faces, "", 0, []string{"☺", "☻", "☹"}},
SplitTest{abcd, "a", -1, []string{"a", "bcd"}},
SplitTest{abcd, "z", -1, []string{"abcd"}},
SplitTest{abcd, "", -1, []string{"a", "b", "c", "d"}},
SplitTest{commas, ",", -1, []string{"1,", "2,", "3,", "4"}},
SplitTest{dots, "...", -1, []string{"1...", ".2...", ".3...", ".4"}},
SplitTest{faces, "☹", -1, []string{"☺☻☹", ""}},
SplitTest{faces, "~", -1, []string{faces}},
SplitTest{faces, "", -1, []string{"☺", "☻", "☹"}},
SplitTest{"1 2 3 4", " ", 3, []string{"1 ", "2 ", "3 4"}},
SplitTest{"1 2 3", " ", 3, []string{"1 ", "2 ", "3"}},
SplitTest{"1 2", " ", 3, []string{"1 ", "2"}},
@ -554,8 +558,8 @@ func equal(m string, s1, s2 string, t *testing.T) bool {
if s1 == s2 {
return true
}
e1 := Split(s1, "", 0)
e2 := Split(s2, "", 0)
e1 := Split(s1, "", -1)
e2 := Split(s2, "", -1)
for i, c1 := range e1 {
if i > len(e2) {
break
@ -709,24 +713,25 @@ type ReplaceTest struct {
}
var ReplaceTests = []ReplaceTest{
ReplaceTest{"hello", "l", "L", 0, "heLLo"},
ReplaceTest{"hello", "x", "X", 0, "hello"},
ReplaceTest{"", "x", "X", 0, ""},
ReplaceTest{"radar", "r", "<r>", 0, "<r>ada<r>"},
ReplaceTest{"", "", "<>", 0, "<>"},
ReplaceTest{"banana", "a", "<>", 0, "b<>n<>n<>"},
ReplaceTest{"hello", "l", "L", 0, "hello"},
ReplaceTest{"hello", "l", "L", -1, "heLLo"},
ReplaceTest{"hello", "x", "X", -1, "hello"},
ReplaceTest{"", "x", "X", -1, ""},
ReplaceTest{"radar", "r", "<r>", -1, "<r>ada<r>"},
ReplaceTest{"", "", "<>", -1, "<>"},
ReplaceTest{"banana", "a", "<>", -1, "b<>n<>n<>"},
ReplaceTest{"banana", "a", "<>", 1, "b<>nana"},
ReplaceTest{"banana", "a", "<>", 1000, "b<>n<>n<>"},
ReplaceTest{"banana", "an", "<>", 0, "b<><>a"},
ReplaceTest{"banana", "ana", "<>", 0, "b<>na"},
ReplaceTest{"banana", "", "<>", 0, "<>b<>a<>n<>a<>n<>a<>"},
ReplaceTest{"banana", "an", "<>", -1, "b<><>a"},
ReplaceTest{"banana", "ana", "<>", -1, "b<>na"},
ReplaceTest{"banana", "", "<>", -1, "<>b<>a<>n<>a<>n<>a<>"},
ReplaceTest{"banana", "", "<>", 10, "<>b<>a<>n<>a<>n<>a<>"},
ReplaceTest{"banana", "", "<>", 6, "<>b<>a<>n<>a<>n<>a"},
ReplaceTest{"banana", "", "<>", 5, "<>b<>a<>n<>a<>na"},
ReplaceTest{"banana", "", "<>", 1, "<>banana"},
ReplaceTest{"banana", "a", "a", 0, "banana"},
ReplaceTest{"banana", "a", "a", -1, "banana"},
ReplaceTest{"banana", "a", "a", 1, "banana"},
ReplaceTest{"☺☻☹", "", "<>", 0, "<>☺<>☻<>☹<>"},
ReplaceTest{"☺☻☹", "", "<>", -1, "<>☺<>☻<>☹<>"},
}
func TestReplace(t *testing.T) {

2
src/pkg/template/template.go
View File

@ -635,7 +635,7 @@ func (st *state) findVar(s string) reflect.Value {
return st.data
}
data := st.data
for _, elem := range strings.Split(s, ".", 0) {
for _, elem := range strings.Split(s, ".", -1) {
// Look up field; data must be a struct or map.
data = lookup(data, elem)
if data == nil {

6
src/pkg/unicode/maketables.go
View File

@ -236,7 +236,7 @@ func all(scripts map[string][]Script) []string {
// Extract the version number from the URL
func version() string {
// Break on slashes and look for the first numeric field
fields := strings.Split(*url, "/", 0)
fields := strings.Split(*url, "/", -1)
for _, f := range fields {
if len(f) > 0 && '0' <= f[0] && f[0] <= '9' {
return f
@ -304,7 +304,7 @@ func printCategories() {
return
}
// Find out which categories to dump
list := strings.Split(*tablelist, ",", 0)
list := strings.Split(*tablelist, ",", -1)
if *tablelist == "all" {
list = allCategories()
}
@ -580,7 +580,7 @@ func printScriptOrProperty(doProps bool) {
resp.Body.Close()
// Find out which scripts to dump
list := strings.Split(flaglist, ",", 0)
list := strings.Split(flaglist, ",", -1)
if flaglist == "all" {
list = all(table)
}