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meta_information
dict
q16300
buildProxyRequest
train
func buildProxyRequest(originalReq *http.Request, baseURL url.URL, extraPath string) (*http.Request, error) { host := baseURL.Host if baseURL.Port() == "" { host = baseURL.Host + ":" + watchdogPort } url := url.URL{ Scheme: baseURL.Scheme, Host: host, Path: extraPath, RawQuery: originalReq.URL.RawQuery, } upstreamReq, err := http.NewRequest(originalReq.Method, url.String(), nil) if err != nil { return nil, err } copyHeaders(upstreamReq.Header, &originalReq.Header) if len(originalReq.Host) > 0 && upstreamReq.Header.Get("X-Forwarded-Host") == "" { upstreamReq.Header["X-Forwarded-Host"] = []string{originalReq.Host} } if upstreamReq.Header.Get("X-Forwarded-For") == "" { upstreamReq.Header["X-Forwarded-For"] = []string{originalReq.RemoteAddr} } if originalReq.Body != nil { upstreamReq.Body = originalReq.Body } return upstreamReq, nil }
go
{ "resource": "" }
q16301
copyHeaders
train
func copyHeaders(destination http.Header, source *http.Header) { for k, v := range *source { vClone := make([]string, len(v)) copy(vClone, v) destination[k] = vClone } }
go
{ "resource": "" }
q16302
getContentType
train
func getContentType(request http.Header, proxyResponse http.Header) (headerContentType string) { responseHeader := proxyResponse.Get("Content-Type") requestHeader := request.Get("Content-Type") if len(responseHeader) > 0 { headerContentType = responseHeader } else if len(requestHeader) > 0 { headerContentType = requestHeader } else { headerContentType = defaultContentType } return headerContentType }
go
{ "resource": "" }
q16303
writeError
train
func writeError(w http.ResponseWriter, statusCode int, msg string, args ...interface{}) { w.WriteHeader(statusCode) w.Write([]byte(fmt.Sprintf(msg, args...))) }
go
{ "resource": "" }
q16304
Serve
train
func Serve(handlers *types.FaaSHandlers, config *types.FaaSConfig) { if config.EnableBasicAuth { reader := auth.ReadBasicAuthFromDisk{ SecretMountPath: config.SecretMountPath, } credentials, err := reader.Read() if err != nil { log.Fatal(err) } handlers.FunctionReader = auth.DecorateWithBasicAuth(handlers.FunctionReader, credentials) handlers.DeployHandler = auth.DecorateWithBasicAuth(handlers.DeployHandler, credentials) handlers.DeleteHandler = auth.DecorateWithBasicAuth(handlers.DeleteHandler, credentials) handlers.UpdateHandler = auth.DecorateWithBasicAuth(handlers.UpdateHandler, credentials) handlers.ReplicaReader = auth.DecorateWithBasicAuth(handlers.ReplicaReader, credentials) handlers.ReplicaUpdater = auth.DecorateWithBasicAuth(handlers.ReplicaUpdater, credentials) handlers.InfoHandler = auth.DecorateWithBasicAuth(handlers.InfoHandler, credentials) handlers.SecretHandler = auth.DecorateWithBasicAuth(handlers.SecretHandler, credentials) } // System (auth) endpoints r.HandleFunc("/system/functions", handlers.FunctionReader).Methods("GET") r.HandleFunc("/system/functions", handlers.DeployHandler).Methods("POST") r.HandleFunc("/system/functions", handlers.DeleteHandler).Methods("DELETE") r.HandleFunc("/system/functions", handlers.UpdateHandler).Methods("PUT") r.HandleFunc("/system/function/{name:[-a-zA-Z_0-9]+}", handlers.ReplicaReader).Methods("GET") r.HandleFunc("/system/scale-function/{name:[-a-zA-Z_0-9]+}", handlers.ReplicaUpdater).Methods("POST") r.HandleFunc("/system/info", handlers.InfoHandler).Methods("GET") r.HandleFunc("/system/secrets", handlers.SecretHandler).Methods(http.MethodGet, http.MethodPut, http.MethodPost, http.MethodDelete) // Open endpoints r.HandleFunc("/function/{name:[-a-zA-Z_0-9]+}", handlers.FunctionProxy) r.HandleFunc("/function/{name:[-a-zA-Z_0-9]+}/", handlers.FunctionProxy) r.HandleFunc("/function/{name:[-a-zA-Z_0-9]+}/{params:.*}", handlers.FunctionProxy) if config.EnableHealth { r.HandleFunc("/healthz", handlers.HealthHandler).Methods("GET") } readTimeout := config.ReadTimeout writeTimeout := config.WriteTimeout tcpPort := 8080 if config.TCPPort != nil { tcpPort = *config.TCPPort } s := &http.Server{ Addr: fmt.Sprintf(":%d", tcpPort), ReadTimeout: readTimeout, WriteTimeout: writeTimeout, MaxHeaderBytes: http.DefaultMaxHeaderBytes, // 1MB - can be overridden by setting Server.MaxHeaderBytes. Handler: r, } log.Fatal(s.ListenAndServe()) }
go
{ "resource": "" }
q16305
setDefault
train
func (i *UI) setDefault() { // Set the default writer & reader if not provided if i.Writer == nil { i.Writer = defaultWriter } if i.Reader == nil { i.Reader = defaultReader } if i.bReader == nil { i.bReader = bufio.NewReader(i.Reader) } }
go
{ "resource": "" }
q16306
validateFunc
train
func (o *Options) validateFunc() ValidateFunc { if o.ValidateFunc == nil { return defaultValidateFunc } return o.ValidateFunc }
go
{ "resource": "" }
q16307
readOpts
train
func (o *Options) readOpts() *readOptions { var mask bool var maskVal string // Hide input and prompt nothing on screen. if o.Hide { mask = true } // Mask input and prompt default maskVal. if o.Mask { mask = true maskVal = defaultMaskVal } // Mask input and prompt custom maskVal. if o.MaskVal != "" { maskVal = o.MaskVal } return &readOptions{ mask: mask, maskVal: maskVal, } }
go
{ "resource": "" }
q16308
read
train
func (i *UI) read(opts *readOptions) (string, error) { i.once.Do(i.setDefault) // sigCh is channel which is watch Interruptted signal (SIGINT) sigCh := make(chan os.Signal, 1) signal.Notify(sigCh, os.Interrupt) defer signal.Stop(sigCh) var resultStr string var resultErr error doneCh := make(chan struct{}) go func() { defer close(doneCh) if opts.mask { f, ok := i.Reader.(*os.File) if !ok { resultErr = fmt.Errorf("reader must be a file") return } i.mask, i.maskVal = opts.mask, opts.maskVal resultStr, resultErr = i.rawRead(f) } else { line, err := i.bReader.ReadString('\n') if err != nil && err != io.EOF { resultErr = fmt.Errorf("failed to read the input: %s", err) } resultStr = strings.TrimSuffix(line, LineSep) // brute force for the moment resultStr = strings.TrimSuffix(line, "\n") } }() select { case <-sigCh: return "", ErrInterrupted case <-doneCh: return resultStr, resultErr } }
go
{ "resource": "" }
q16309
Set
train
func (cache *Cache) Set(key string, data string) { cache.mutex.Lock() item := &Item{data: data} item.touch(cache.ttl) cache.items[key] = item cache.mutex.Unlock() }
go
{ "resource": "" }
q16310
Get
train
func (cache *Cache) Get(key string) (data string, found bool) { cache.mutex.Lock() item, exists := cache.items[key] if !exists || item.expired() { data = "" found = false } else { item.touch(cache.ttl) data = item.data found = true } cache.mutex.Unlock() return }
go
{ "resource": "" }
q16311
NewCache
train
func NewCache(duration time.Duration) *Cache { cache := &Cache{ ttl: duration, items: map[string]*Item{}, } cache.startCleanupTimer() return cache }
go
{ "resource": "" }
q16312
OpcodeDescription
train
func (c *Code) OpcodeDescription(offset int) string { buf := &bytes.Buffer{} op := InstOp(c.Codes[offset]) fmt.Fprintf(buf, "%06d ", offset) if opcodeBacktracks(op & Mask) { buf.WriteString("*") } else { buf.WriteString(" ") } buf.WriteString(operatorDescription(op)) buf.WriteString("(") op &= Mask switch op { case One, Notone, Onerep, Notonerep, Oneloop, Notoneloop, Onelazy, Notonelazy: buf.WriteString("Ch = ") buf.WriteString(CharDescription(rune(c.Codes[offset+1]))) case Set, Setrep, Setloop, Setlazy: buf.WriteString("Set = ") buf.WriteString(c.Sets[c.Codes[offset+1]].String()) case Multi: fmt.Fprintf(buf, "String = %s", string(c.Strings[c.Codes[offset+1]])) case Ref, Testref: fmt.Fprintf(buf, "Index = %d", c.Codes[offset+1]) case Capturemark: fmt.Fprintf(buf, "Index = %d", c.Codes[offset+1]) if c.Codes[offset+2] != -1 { fmt.Fprintf(buf, ", Unindex = %d", c.Codes[offset+2]) } case Nullcount, Setcount: fmt.Fprintf(buf, "Value = %d", c.Codes[offset+1]) case Goto, Lazybranch, Branchmark, Lazybranchmark, Branchcount, Lazybranchcount: fmt.Fprintf(buf, "Addr = %d", c.Codes[offset+1]) } switch op { case Onerep, Notonerep, Oneloop, Notoneloop, Onelazy, Notonelazy, Setrep, Setloop, Setlazy: buf.WriteString(", Rep = ") if c.Codes[offset+2] == math.MaxInt32 { buf.WriteString("inf") } else { fmt.Fprintf(buf, "%d", c.Codes[offset+2]) } case Branchcount, Lazybranchcount: buf.WriteString(", Limit = ") if c.Codes[offset+2] == math.MaxInt32 { buf.WriteString("inf") } else { fmt.Fprintf(buf, "%d", c.Codes[offset+2]) } } buf.WriteString(")") return buf.String() }
go
{ "resource": "" }
q16313
String
train
func (c *Capture) String() string { return string(c.text[c.Index : c.Index+c.Length]) }
go
{ "resource": "" }
q16314
Runes
train
func (c *Capture) Runes() []rune { return c.text[c.Index : c.Index+c.Length] }
go
{ "resource": "" }
q16315
isMatched
train
func (m *Match) isMatched(cap int) bool { return cap < len(m.matchcount) && m.matchcount[cap] > 0 && m.matches[cap][m.matchcount[cap]*2-1] != (-3+1) }
go
{ "resource": "" }
q16316
matchIndex
train
func (m *Match) matchIndex(cap int) int { i := m.matches[cap][m.matchcount[cap]*2-2] if i >= 0 { return i } return m.matches[cap][-3-i] }
go
{ "resource": "" }
q16317
matchLength
train
func (m *Match) matchLength(cap int) int { i := m.matches[cap][m.matchcount[cap]*2-1] if i >= 0 { return i } return m.matches[cap][-3-i] }
go
{ "resource": "" }
q16318
GroupByName
train
func (m *Match) GroupByName(name string) *Group { num := m.regex.GroupNumberFromName(name) if num < 0 { return nil } return m.GroupByNumber(num) }
go
{ "resource": "" }
q16319
GroupByNumber
train
func (m *Match) GroupByNumber(num int) *Group { // check our sparse map if m.sparseCaps != nil { if newNum, ok := m.sparseCaps[num]; ok { num = newNum } } if num >= len(m.matchcount) || num < 0 { return nil } if num == 0 { return &m.Group } m.populateOtherGroups() return &m.otherGroups[num-1] }
go
{ "resource": "" }
q16320
Compile
train
func Compile(expr string, opt RegexOptions) (*Regexp, error) { // parse it tree, err := syntax.Parse(expr, syntax.RegexOptions(opt)) if err != nil { return nil, err } // translate it to code code, err := syntax.Write(tree) if err != nil { return nil, err } // return it return &Regexp{ pattern: expr, options: opt, caps: code.Caps, capnames: tree.Capnames, capslist: tree.Caplist, capsize: code.Capsize, code: code, MatchTimeout: DefaultMatchTimeout, }, nil }
go
{ "resource": "" }
q16321
MustCompile
train
func MustCompile(str string, opt RegexOptions) *Regexp { regexp, error := Compile(str, opt) if error != nil { panic(`regexp2: Compile(` + quote(str) + `): ` + error.Error()) } return regexp }
go
{ "resource": "" }
q16322
FindStringMatch
train
func (re *Regexp) FindStringMatch(s string) (*Match, error) { // convert string to runes return re.run(false, -1, getRunes(s)) }
go
{ "resource": "" }
q16323
FindRunesMatch
train
func (re *Regexp) FindRunesMatch(r []rune) (*Match, error) { return re.run(false, -1, r) }
go
{ "resource": "" }
q16324
FindStringMatchStartingAt
train
func (re *Regexp) FindStringMatchStartingAt(s string, startAt int) (*Match, error) { if startAt > len(s) { return nil, errors.New("startAt must be less than the length of the input string") } r, startAt := re.getRunesAndStart(s, startAt) if startAt == -1 { // we didn't find our start index in the string -- that's a problem return nil, errors.New("startAt must align to the start of a valid rune in the input string") } return re.run(false, startAt, r) }
go
{ "resource": "" }
q16325
FindRunesMatchStartingAt
train
func (re *Regexp) FindRunesMatchStartingAt(r []rune, startAt int) (*Match, error) { return re.run(false, startAt, r) }
go
{ "resource": "" }
q16326
FindNextMatch
train
func (re *Regexp) FindNextMatch(m *Match) (*Match, error) { if m == nil { return nil, nil } // If previous match was empty, advance by one before matching to prevent // infinite loop startAt := m.textpos if m.Length == 0 { if m.textpos == len(m.text) { return nil, nil } if re.RightToLeft() { startAt-- } else { startAt++ } } return re.run(false, startAt, m.text) }
go
{ "resource": "" }
q16327
MatchString
train
func (re *Regexp) MatchString(s string) (bool, error) { m, err := re.run(true, -1, getRunes(s)) if err != nil { return false, err } return m != nil, nil }
go
{ "resource": "" }
q16328
MatchRunes
train
func (re *Regexp) MatchRunes(r []rune) (bool, error) { m, err := re.run(true, -1, r) if err != nil { return false, err } return m != nil, nil }
go
{ "resource": "" }
q16329
GetGroupNames
train
func (re *Regexp) GetGroupNames() []string { var result []string if re.capslist == nil { result = make([]string, re.capsize) for i := 0; i < len(result); i++ { result[i] = strconv.Itoa(i) } } else { result = make([]string, len(re.capslist)) copy(result, re.capslist) } return result }
go
{ "resource": "" }
q16330
GetGroupNumbers
train
func (re *Regexp) GetGroupNumbers() []int { var result []int if re.caps == nil { result = make([]int, re.capsize) for i := 0; i < len(result); i++ { result[i] = i } } else { result = make([]int, len(re.caps)) for k, v := range re.caps { result[v] = k } } return result }
go
{ "resource": "" }
q16331
GroupNameFromNumber
train
func (re *Regexp) GroupNameFromNumber(i int) string { if re.capslist == nil { if i >= 0 && i < re.capsize { return strconv.Itoa(i) } return "" } if re.caps != nil { var ok bool if i, ok = re.caps[i]; !ok { return "" } } if i >= 0 && i < len(re.capslist) { return re.capslist[i] } return "" }
go
{ "resource": "" }
q16332
GroupNumberFromName
train
func (re *Regexp) GroupNumberFromName(name string) int { // look up name if we have a hashtable of names if re.capnames != nil { if k, ok := re.capnames[name]; ok { return k } return -1 } // convert to an int if it looks like a number result := 0 for i := 0; i < len(name); i++ { ch := name[i] if ch > '9' || ch < '0' { return -1 } result *= 10 result += int(ch - '0') } // return int if it's in range if result >= 0 && result < re.capsize { return result } return -1 }
go
{ "resource": "" }
q16333
codeFromTree
train
func (w *writer) codeFromTree(tree *RegexTree) (*Code, error) { var ( curNode *regexNode curChild int capsize int ) // construct sparse capnum mapping if some numbers are unused if tree.capnumlist == nil || tree.captop == len(tree.capnumlist) { capsize = tree.captop w.caps = nil } else { capsize = len(tree.capnumlist) w.caps = tree.caps for i := 0; i < len(tree.capnumlist); i++ { w.caps[tree.capnumlist[i]] = i } } w.counting = true for { if !w.counting { w.emitted = make([]int, w.count) } curNode = tree.root curChild = 0 w.emit1(Lazybranch, 0) for { if len(curNode.children) == 0 { w.emitFragment(curNode.t, curNode, 0) } else if curChild < len(curNode.children) { w.emitFragment(curNode.t|beforeChild, curNode, curChild) curNode = curNode.children[curChild] w.pushInt(curChild) curChild = 0 continue } if w.emptyStack() { break } curChild = w.popInt() curNode = curNode.next w.emitFragment(curNode.t|afterChild, curNode, curChild) curChild++ } w.patchJump(0, w.curPos()) w.emit(Stop) if !w.counting { break } w.counting = false } fcPrefix := getFirstCharsPrefix(tree) prefix := getPrefix(tree) rtl := (tree.options & RightToLeft) != 0 var bmPrefix *BmPrefix //TODO: benchmark string prefixes if prefix != nil && len(prefix.PrefixStr) > 0 && MaxPrefixSize > 0 { if len(prefix.PrefixStr) > MaxPrefixSize { // limit prefix changes to 10k prefix.PrefixStr = prefix.PrefixStr[:MaxPrefixSize] } bmPrefix = newBmPrefix(prefix.PrefixStr, prefix.CaseInsensitive, rtl) } else { bmPrefix = nil } return &Code{ Codes: w.emitted, Strings: w.stringtable, Sets: w.settable, TrackCount: w.trackcount, Caps: w.caps, Capsize: capsize, FcPrefix: fcPrefix, BmPrefix: bmPrefix, Anchors: getAnchors(tree), RightToLeft: rtl, }, nil }
go
{ "resource": "" }
q16334
patchJump
train
func (w *writer) patchJump(offset, jumpDest int) { w.emitted[offset+1] = jumpDest }
go
{ "resource": "" }
q16335
setCode
train
func (w *writer) setCode(set *CharSet) int { if w.counting { return 0 } buf := &bytes.Buffer{} set.mapHashFill(buf) hash := buf.String() i, ok := w.sethash[hash] if !ok { i = len(w.sethash) w.sethash[hash] = i w.settable = append(w.settable, set) } return i }
go
{ "resource": "" }
q16336
stringCode
train
func (w *writer) stringCode(str []rune) int { if w.counting { return 0 } hash := string(str) i, ok := w.stringhash[hash] if !ok { i = len(w.stringhash) w.stringhash[hash] = i w.stringtable = append(w.stringtable, str) } return i }
go
{ "resource": "" }
q16337
mapCapnum
train
func (w *writer) mapCapnum(capnum int) int { if capnum == -1 { return -1 } if w.caps != nil { return w.caps[capnum] } return capnum }
go
{ "resource": "" }
q16338
emit1
train
func (w *writer) emit1(op InstOp, opd1 int) { if w.counting { w.count += 2 if opcodeBacktracks(op) { w.trackcount++ } return } w.emitted[w.curpos] = int(op) w.curpos++ w.emitted[w.curpos] = opd1 w.curpos++ }
go
{ "resource": "" }
q16339
ensureStorage
train
func (r *runner) ensureStorage() { if r.runstackpos < r.runtrackcount*4 { doubleIntSlice(&r.runstack, &r.runstackpos) } if r.runtrackpos < r.runtrackcount*4 { doubleIntSlice(&r.runtrack, &r.runtrackpos) } }
go
{ "resource": "" }
q16340
crawl
train
func (r *runner) crawl(i int) { if r.runcrawlpos == 0 { doubleIntSlice(&r.runcrawl, &r.runcrawlpos) } r.runcrawlpos-- r.runcrawl[r.runcrawlpos] = i }
go
{ "resource": "" }
q16341
popcrawl
train
func (r *runner) popcrawl() int { val := r.runcrawl[r.runcrawlpos] r.runcrawlpos++ return val }
go
{ "resource": "" }
q16342
trackPeekN
train
func (r *runner) trackPeekN(i int) int { return r.runtrack[r.runtrackpos-i-1] }
go
{ "resource": "" }
q16343
stackPush
train
func (r *runner) stackPush(I1 int) { r.runstackpos-- r.runstack[r.runstackpos] = I1 }
go
{ "resource": "" }
q16344
stackPeekN
train
func (r *runner) stackPeekN(i int) int { return r.runstack[r.runstackpos-i-1] }
go
{ "resource": "" }
q16345
uncapture
train
func (r *runner) uncapture() { capnum := r.popcrawl() r.runmatch.removeMatch(capnum) }
go
{ "resource": "" }
q16346
isBoundary
train
func (r *runner) isBoundary(index, startpos, endpos int) bool { return (index > startpos && syntax.IsWordChar(r.runtext[index-1])) != (index < endpos && syntax.IsWordChar(r.runtext[index])) }
go
{ "resource": "" }
q16347
getRunner
train
func (re *Regexp) getRunner() *runner { re.muRun.Lock() if n := len(re.runner); n > 0 { z := re.runner[n-1] re.runner = re.runner[:n-1] re.muRun.Unlock() return z } re.muRun.Unlock() z := &runner{ re: re, code: re.code, } return z }
go
{ "resource": "" }
q16348
Copy
train
func (c CharSet) Copy() CharSet { ret := CharSet{ anything: c.anything, negate: c.negate, } ret.ranges = append(ret.ranges, c.ranges...) ret.categories = append(ret.categories, c.categories...) if c.sub != nil { sub := c.sub.Copy() ret.sub = &sub } return ret }
go
{ "resource": "" }
q16349
String
train
func (c CharSet) String() string { buf := &bytes.Buffer{} buf.WriteRune('[') if c.IsNegated() { buf.WriteRune('^') } for _, r := range c.ranges { buf.WriteString(CharDescription(r.first)) if r.first != r.last { if r.last-r.first != 1 { //groups that are 1 char apart skip the dash buf.WriteRune('-') } buf.WriteString(CharDescription(r.last)) } } for _, c := range c.categories { buf.WriteString(c.String()) } if c.sub != nil { buf.WriteRune('-') buf.WriteString(c.sub.String()) } buf.WriteRune(']') return buf.String() }
go
{ "resource": "" }
q16350
mapHashFill
train
func (c CharSet) mapHashFill(buf *bytes.Buffer) { if c.negate { buf.WriteByte(0) } else { buf.WriteByte(1) } binary.Write(buf, binary.LittleEndian, len(c.ranges)) binary.Write(buf, binary.LittleEndian, len(c.categories)) for _, r := range c.ranges { buf.WriteRune(r.first) buf.WriteRune(r.last) } for _, ct := range c.categories { buf.WriteString(ct.cat) if ct.negate { buf.WriteByte(1) } else { buf.WriteByte(0) } } if c.sub != nil { c.sub.mapHashFill(buf) } }
go
{ "resource": "" }
q16351
CharDescription
train
func CharDescription(ch rune) string { /*if ch == '\\' { return "\\\\" } if ch > ' ' && ch <= '~' { return string(ch) } else if ch == '\n' { return "\\n" } else if ch == ' ' { return "\\ " }*/ b := &bytes.Buffer{} escape(b, ch, false) //fmt.Sprintf("%U", ch) return b.String() }
go
{ "resource": "" }
q16352
addRanges
train
func (c *CharSet) addRanges(ranges []singleRange) { if c.anything { return } c.ranges = append(c.ranges, ranges...) c.canonicalize() }
go
{ "resource": "" }
q16353
canonicalize
train
func (c *CharSet) canonicalize() { var i, j int var last rune // // Find and eliminate overlapping or abutting ranges // if len(c.ranges) > 1 { sort.Sort(singleRangeSorter(c.ranges)) done := false for i, j = 1, 0; ; i++ { for last = c.ranges[j].last; ; i++ { if i == len(c.ranges) || last == utf8.MaxRune { done = true break } CurrentRange := c.ranges[i] if CurrentRange.first > last+1 { break } if last < CurrentRange.last { last = CurrentRange.last } } c.ranges[j] = singleRange{first: c.ranges[j].first, last: last} j++ if done { break } if j < i { c.ranges[j] = c.ranges[i] } } c.ranges = append(c.ranges[:j], c.ranges[len(c.ranges):]...) } }
go
{ "resource": "" }
q16354
addLowercase
train
func (c *CharSet) addLowercase() { if c.anything { return } toAdd := []singleRange{} for i := 0; i < len(c.ranges); i++ { r := c.ranges[i] if r.first == r.last { lower := unicode.ToLower(r.first) c.ranges[i] = singleRange{first: lower, last: lower} } else { toAdd = append(toAdd, r) } } for _, r := range toAdd { c.addLowercaseRange(r.first, r.last) } c.canonicalize() }
go
{ "resource": "" }
q16355
Parse
train
func Parse(re string, op RegexOptions) (*RegexTree, error) { p := parser{ options: op, caps: make(map[int]int), } p.setPattern(re) if err := p.countCaptures(); err != nil { return nil, err } p.reset(op) root, err := p.scanRegex() if err != nil { return nil, err } tree := &RegexTree{ root: root, caps: p.caps, capnumlist: p.capnumlist, captop: p.captop, Capnames: p.capnames, Caplist: p.capnamelist, options: op, } if tree.options&Debug > 0 { os.Stdout.WriteString(tree.Dump()) } return tree, nil }
go
{ "resource": "" }
q16356
countCaptures
train
func (p *parser) countCaptures() error { var ch rune p.noteCaptureSlot(0, 0) p.autocap = 1 for p.charsRight() > 0 { pos := p.textpos() ch = p.moveRightGetChar() switch ch { case '\\': if p.charsRight() > 0 { p.moveRight(1) } case '#': if p.useOptionX() { p.moveLeft() p.scanBlank() } case '[': p.scanCharSet(false, true) case ')': if !p.emptyOptionsStack() { p.popOptions() } case '(': if p.charsRight() >= 2 && p.rightChar(1) == '#' && p.rightChar(0) == '?' { p.moveLeft() p.scanBlank() } else { p.pushOptions() if p.charsRight() > 0 && p.rightChar(0) == '?' { // we have (?... p.moveRight(1) if p.charsRight() > 1 && (p.rightChar(0) == '<' || p.rightChar(0) == '\'') { // named group: (?<... or (?'... p.moveRight(1) ch = p.rightChar(0) if ch != '0' && IsWordChar(ch) { if ch >= '1' && ch <= '9' { dec, err := p.scanDecimal() if err != nil { return err } p.noteCaptureSlot(dec, pos) } else { p.noteCaptureName(p.scanCapname(), pos) } } } else { // (?... // get the options if it's an option construct (?cimsx-cimsx...) p.scanOptions() if p.charsRight() > 0 { if p.rightChar(0) == ')' { // (?cimsx-cimsx) p.moveRight(1) p.popKeepOptions() } else if p.rightChar(0) == '(' { // alternation construct: (?(foo)yes|no) // ignore the next paren so we don't capture the condition p.ignoreNextParen = true // break from here so we don't reset ignoreNextParen continue } } } } else { if !p.useOptionN() && !p.ignoreNextParen { p.noteCaptureSlot(p.consumeAutocap(), pos) } } } p.ignoreNextParen = false } } p.assignNameSlots() return nil }
go
{ "resource": "" }
q16357
scanBackslash
train
func (p *parser) scanBackslash() (*regexNode, error) { if p.charsRight() == 0 { return nil, p.getErr(ErrIllegalEndEscape) } switch ch := p.rightChar(0); ch { case 'b', 'B', 'A', 'G', 'Z', 'z': p.moveRight(1) return newRegexNode(p.typeFromCode(ch), p.options), nil case 'w': p.moveRight(1) if p.useOptionE() { return newRegexNodeSet(ntSet, p.options, ECMAWordClass()), nil } return newRegexNodeSet(ntSet, p.options, WordClass()), nil case 'W': p.moveRight(1) if p.useOptionE() { return newRegexNodeSet(ntSet, p.options, NotECMAWordClass()), nil } return newRegexNodeSet(ntSet, p.options, NotWordClass()), nil case 's': p.moveRight(1) if p.useOptionE() { return newRegexNodeSet(ntSet, p.options, ECMASpaceClass()), nil } return newRegexNodeSet(ntSet, p.options, SpaceClass()), nil case 'S': p.moveRight(1) if p.useOptionE() { return newRegexNodeSet(ntSet, p.options, NotECMASpaceClass()), nil } return newRegexNodeSet(ntSet, p.options, NotSpaceClass()), nil case 'd': p.moveRight(1) if p.useOptionE() { return newRegexNodeSet(ntSet, p.options, ECMADigitClass()), nil } return newRegexNodeSet(ntSet, p.options, DigitClass()), nil case 'D': p.moveRight(1) if p.useOptionE() { return newRegexNodeSet(ntSet, p.options, NotECMADigitClass()), nil } return newRegexNodeSet(ntSet, p.options, NotDigitClass()), nil case 'p', 'P': p.moveRight(1) prop, err := p.parseProperty() if err != nil { return nil, err } cc := &CharSet{} cc.addCategory(prop, (ch != 'p'), p.useOptionI(), p.patternRaw) if p.useOptionI() { cc.addLowercase() } return newRegexNodeSet(ntSet, p.options, cc), nil default: return p.scanBasicBackslash() } }
go
{ "resource": "" }
q16358
typeFromCode
train
func (p *parser) typeFromCode(ch rune) nodeType { switch ch { case 'b': if p.useOptionE() { return ntECMABoundary } return ntBoundary case 'B': if p.useOptionE() { return ntNonECMABoundary } return ntNonboundary case 'A': return ntBeginning case 'G': return ntStart case 'Z': return ntEndZ case 'z': return ntEnd default: return ntNothing } }
go
{ "resource": "" }
q16359
scanBlank
train
func (p *parser) scanBlank() error { if p.useOptionX() { for { for p.charsRight() > 0 && isSpace(p.rightChar(0)) { p.moveRight(1) } if p.charsRight() == 0 { break } if p.rightChar(0) == '#' { for p.charsRight() > 0 && p.rightChar(0) != '\n' { p.moveRight(1) } } else if p.charsRight() >= 3 && p.rightChar(2) == '#' && p.rightChar(1) == '?' && p.rightChar(0) == '(' { for p.charsRight() > 0 && p.rightChar(0) != ')' { p.moveRight(1) } if p.charsRight() == 0 { return p.getErr(ErrUnterminatedComment) } p.moveRight(1) } else { break } } } else { for { if p.charsRight() < 3 || p.rightChar(2) != '#' || p.rightChar(1) != '?' || p.rightChar(0) != '(' { return nil } for p.charsRight() > 0 && p.rightChar(0) != ')' { p.moveRight(1) } if p.charsRight() == 0 { return p.getErr(ErrUnterminatedComment) } p.moveRight(1) } } return nil }
go
{ "resource": "" }
q16360
scanOptions
train
func (p *parser) scanOptions() { for off := false; p.charsRight() > 0; p.moveRight(1) { ch := p.rightChar(0) if ch == '-' { off = true } else if ch == '+' { off = false } else { option := optionFromCode(ch) if option == 0 || isOnlyTopOption(option) { return } if off { p.options &= ^option } else { p.options |= option } } } }
go
{ "resource": "" }
q16361
scanCharEscape
train
func (p *parser) scanCharEscape() (rune, error) { ch := p.moveRightGetChar() if ch >= '0' && ch <= '7' { p.moveLeft() return p.scanOctal(), nil } switch ch { case 'x': // support for \x{HEX} syntax from Perl and PCRE if p.charsRight() > 0 && p.rightChar(0) == '{' { p.moveRight(1) return p.scanHexUntilBrace() } return p.scanHex(2) case 'u': return p.scanHex(4) case 'a': return '\u0007', nil case 'b': return '\b', nil case 'e': return '\u001B', nil case 'f': return '\f', nil case 'n': return '\n', nil case 'r': return '\r', nil case 't': return '\t', nil case 'v': return '\u000B', nil case 'c': return p.scanControl() default: if !p.useOptionE() && IsWordChar(ch) { return 0, p.getErr(ErrUnrecognizedEscape, string(ch)) } return ch, nil } }
go
{ "resource": "" }
q16362
scanControl
train
func (p *parser) scanControl() (rune, error) { if p.charsRight() <= 0 { return 0, p.getErr(ErrMissingControl) } ch := p.moveRightGetChar() // \ca interpreted as \cA if ch >= 'a' && ch <= 'z' { ch = (ch - ('a' - 'A')) } ch = (ch - '@') if ch >= 0 && ch < ' ' { return ch, nil } return 0, p.getErr(ErrUnrecognizedControl) }
go
{ "resource": "" }
q16363
scanHexUntilBrace
train
func (p *parser) scanHexUntilBrace() (rune, error) { // PCRE spec reads like unlimited hex digits are allowed, but unicode has a limit // so we can enforce that i := 0 hasContent := false for p.charsRight() > 0 { ch := p.moveRightGetChar() if ch == '}' { // hit our close brace, we're done here // prevent \x{} if !hasContent { return 0, p.getErr(ErrTooFewHex) } return rune(i), nil } hasContent = true // no brace needs to be hex digit d := hexDigit(ch) if d < 0 { return 0, p.getErr(ErrMissingBrace) } i *= 0x10 i += d if i > unicode.MaxRune { return 0, p.getErr(ErrInvalidHex) } } // we only make it here if we run out of digits without finding the brace return 0, p.getErr(ErrMissingBrace) }
go
{ "resource": "" }
q16364
hexDigit
train
func hexDigit(ch rune) int { if d := uint(ch - '0'); d <= 9 { return int(d) } if d := uint(ch - 'a'); d <= 5 { return int(d + 0xa) } if d := uint(ch - 'A'); d <= 5 { return int(d + 0xa) } return -1 }
go
{ "resource": "" }
q16365
moveRightGetChar
train
func (p *parser) moveRightGetChar() rune { ch := p.pattern[p.currentPos] p.currentPos++ return ch }
go
{ "resource": "" }
q16366
rightChar
train
func (p *parser) rightChar(i int) rune { // default would be 0 return p.pattern[p.currentPos+i] }
go
{ "resource": "" }
q16367
isCaptureSlot
train
func (p *parser) isCaptureSlot(i int) bool { if p.caps != nil { _, ok := p.caps[i] return ok } return (i >= 0 && i < p.capsize) }
go
{ "resource": "" }
q16368
isCaptureName
train
func (p *parser) isCaptureName(capname string) bool { if p.capnames == nil { return false } _, ok := p.capnames[capname] return ok }
go
{ "resource": "" }
q16369
addUnitOne
train
func (p *parser) addUnitOne(ch rune) { if p.useOptionI() { ch = unicode.ToLower(ch) } p.unit = newRegexNodeCh(ntOne, p.options, ch) }
go
{ "resource": "" }
q16370
addUnitNotone
train
func (p *parser) addUnitNotone(ch rune) { if p.useOptionI() { ch = unicode.ToLower(ch) } p.unit = newRegexNodeCh(ntNotone, p.options, ch) }
go
{ "resource": "" }
q16371
addUnitSet
train
func (p *parser) addUnitSet(set *CharSet) { p.unit = newRegexNodeSet(ntSet, p.options, set) }
go
{ "resource": "" }
q16372
addUnitType
train
func (p *parser) addUnitType(t nodeType) { p.unit = newRegexNode(t, p.options) }
go
{ "resource": "" }
q16373
popKeepOptions
train
func (p *parser) popKeepOptions() { lastIdx := len(p.optionsStack) - 1 p.optionsStack = p.optionsStack[:lastIdx] }
go
{ "resource": "" }
q16374
popOptions
train
func (p *parser) popOptions() { lastIdx := len(p.optionsStack) - 1 // get the last item on the stack and then remove it by reslicing p.options = p.optionsStack[lastIdx] p.optionsStack = p.optionsStack[:lastIdx] }
go
{ "resource": "" }
q16375
pushOptions
train
func (p *parser) pushOptions() { p.optionsStack = append(p.optionsStack, p.options) }
go
{ "resource": "" }
q16376
addToConcatenate
train
func (p *parser) addToConcatenate(pos, cch int, isReplacement bool) { var node *regexNode if cch == 0 { return } if cch > 1 { str := p.pattern[pos : pos+cch] if p.useOptionI() && !isReplacement { // We do the ToLower character by character for consistency. With surrogate chars, doing // a ToLower on the entire string could actually change the surrogate pair. This is more correct // linguistically, but since Regex doesn't support surrogates, it's more important to be // consistent. for i := 0; i < len(str); i++ { str[i] = unicode.ToLower(str[i]) } } node = newRegexNodeStr(ntMulti, p.options, str) } else { ch := p.charAt(pos) if p.useOptionI() && !isReplacement { ch = unicode.ToLower(ch) } node = newRegexNodeCh(ntOne, p.options, ch) } p.concatenation.addChild(node) }
go
{ "resource": "" }
q16377
removeChildren
train
func (n *regexNode) removeChildren(startIndex, endIndex int) { n.children = append(n.children[:startIndex], n.children[endIndex:]...) }
go
{ "resource": "" }
q16378
makeRep
train
func (n *regexNode) makeRep(t nodeType, min, max int) { n.t += (t - ntOne) n.m = min n.n = max }
go
{ "resource": "" }
q16379
reduceRep
train
func (n *regexNode) reduceRep() *regexNode { u := n t := n.t min := n.m max := n.n for { if len(u.children) == 0 { break } child := u.children[0] // multiply reps of the same type only if child.t != t { childType := child.t if !(childType >= ntOneloop && childType <= ntSetloop && t == ntLoop || childType >= ntOnelazy && childType <= ntSetlazy && t == ntLazyloop) { break } } // child can be too lumpy to blur, e.g., (a {100,105}) {3} or (a {2,})? // [but things like (a {2,})+ are not too lumpy...] if u.m == 0 && child.m > 1 || child.n < child.m*2 { break } u = child if u.m > 0 { if (math.MaxInt32-1)/u.m < min { u.m = math.MaxInt32 } else { u.m = u.m * min } } if u.n > 0 { if (math.MaxInt32-1)/u.n < max { u.n = math.MaxInt32 } else { u.n = u.n * max } } } if math.MaxInt32 == min { return newRegexNode(ntNothing, n.options) } return u }
go
{ "resource": "" }
q16380
stripEnation
train
func (n *regexNode) stripEnation(emptyType nodeType) *regexNode { switch len(n.children) { case 0: return newRegexNode(emptyType, n.options) case 1: return n.children[0] default: return n } }
go
{ "resource": "" }
q16381
reduceSet
train
func (n *regexNode) reduceSet() *regexNode { // Extract empty-set, one and not-one case as special if n.set == nil { n.t = ntNothing } else if n.set.IsSingleton() { n.ch = n.set.SingletonChar() n.set = nil n.t += (ntOne - ntSet) } else if n.set.IsSingletonInverse() { n.ch = n.set.SingletonChar() n.set = nil n.t += (ntNotone - ntSet) } return n }
go
{ "resource": "" }
q16382
getFirstCharsPrefix
train
func getFirstCharsPrefix(tree *RegexTree) *Prefix { s := regexFcd{ fcStack: make([]regexFc, 32), intStack: make([]int, 32), } fc := s.regexFCFromRegexTree(tree) if fc == nil || fc.nullable || fc.cc.IsEmpty() { return nil } fcSet := fc.getFirstChars() return &Prefix{PrefixSet: fcSet, CaseInsensitive: fc.caseInsensitive} }
go
{ "resource": "" }
q16383
pushFC
train
func (s *regexFcd) pushFC(fc regexFc) { if s.fcDepth >= len(s.fcStack) { expanded := make([]regexFc, s.fcDepth*2) copy(expanded, s.fcStack) s.fcStack = expanded } s.fcStack[s.fcDepth] = fc s.fcDepth++ }
go
{ "resource": "" }
q16384
repeat
train
func repeat(r rune, c int) []rune { if c > MaxPrefixSize { c = MaxPrefixSize } ret := make([]rune, c) // binary growth using copy for speed ret[0] = r bp := 1 for bp < len(ret) { copy(ret[bp:], ret[:bp]) bp *= 2 } return ret }
go
{ "resource": "" }
q16385
Dump
train
func (b *BmPrefix) Dump(indent string) string { buf := &bytes.Buffer{} fmt.Fprintf(buf, "%sBM Pattern: %s\n%sPositive: ", indent, string(b.pattern), indent) for i := 0; i < len(b.positive); i++ { buf.WriteString(strconv.Itoa(b.positive[i])) buf.WriteRune(' ') } buf.WriteRune('\n') if b.negativeASCII != nil { buf.WriteString(indent) buf.WriteString("Negative table\n") for i := 0; i < len(b.negativeASCII); i++ { if b.negativeASCII[i] != len(b.pattern) { fmt.Fprintf(buf, "%s %s %s\n", indent, Escape(string(rune(i))), strconv.Itoa(b.negativeASCII[i])) } } } return buf.String() }
go
{ "resource": "" }
q16386
Scan
train
func (b *BmPrefix) Scan(text []rune, index, beglimit, endlimit int) int { var ( defadv, test, test2 int match, startmatch, endmatch int bump, advance int chTest rune unicodeLookup []int ) if !b.rightToLeft { defadv = len(b.pattern) startmatch = len(b.pattern) - 1 endmatch = 0 test = index + defadv - 1 bump = 1 } else { defadv = -len(b.pattern) startmatch = 0 endmatch = -defadv - 1 test = index + defadv bump = -1 } chMatch := b.pattern[startmatch] for { if test >= endlimit || test < beglimit { return -1 } chTest = text[test] if b.caseInsensitive { chTest = unicode.ToLower(chTest) } if chTest != chMatch { if chTest < 128 { advance = b.negativeASCII[chTest] } else if chTest < 0xffff && len(b.negativeUnicode) > 0 { unicodeLookup = b.negativeUnicode[chTest>>8] if len(unicodeLookup) > 0 { advance = unicodeLookup[chTest&0xFF] } else { advance = defadv } } else { advance = defadv } test += advance } else { // if (chTest == chMatch) test2 = test match = startmatch for { if match == endmatch { if b.rightToLeft { return test2 + 1 } else { return test2 } } match -= bump test2 -= bump chTest = text[test2] if b.caseInsensitive { chTest = unicode.ToLower(chTest) } if chTest != b.pattern[match] { advance = b.positive[match] if (chTest & 0xFF80) == 0 { test2 = (match - startmatch) + b.negativeASCII[chTest] } else if chTest < 0xffff && len(b.negativeUnicode) > 0 { unicodeLookup = b.negativeUnicode[chTest>>8] if len(unicodeLookup) > 0 { test2 = (match - startmatch) + unicodeLookup[chTest&0xFF] } else { test += advance break } } else { test += advance break } if b.rightToLeft { if test2 < advance { advance = test2 } } else if test2 > advance { advance = test2 } test += advance break } } } } }
go
{ "resource": "" }
q16387
IsMatch
train
func (b *BmPrefix) IsMatch(text []rune, index, beglimit, endlimit int) bool { if !b.rightToLeft { if index < beglimit || endlimit-index < len(b.pattern) { return false } return b.matchPattern(text, index) } else { if index > endlimit || index-beglimit < len(b.pattern) { return false } return b.matchPattern(text, index-len(b.pattern)) } }
go
{ "resource": "" }
q16388
String
train
func (anchors AnchorLoc) String() string { buf := &bytes.Buffer{} if 0 != (anchors & AnchorBeginning) { buf.WriteString(", Beginning") } if 0 != (anchors & AnchorStart) { buf.WriteString(", Start") } if 0 != (anchors & AnchorBol) { buf.WriteString(", Bol") } if 0 != (anchors & AnchorBoundary) { buf.WriteString(", Boundary") } if 0 != (anchors & AnchorECMABoundary) { buf.WriteString(", ECMABoundary") } if 0 != (anchors & AnchorEol) { buf.WriteString(", Eol") } if 0 != (anchors & AnchorEnd) { buf.WriteString(", End") } if 0 != (anchors & AnchorEndZ) { buf.WriteString(", EndZ") } // trim off comma if buf.Len() >= 2 { return buf.String()[2:] } return "None" }
go
{ "resource": "" }
q16389
NewReplacerData
train
func NewReplacerData(rep string, caps map[int]int, capsize int, capnames map[string]int, op RegexOptions) (*ReplacerData, error) { p := parser{ options: op, caps: caps, capsize: capsize, capnames: capnames, } p.setPattern(rep) concat, err := p.scanReplacement() if err != nil { return nil, err } if concat.t != ntConcatenate { panic(ErrReplacementError) } sb := &bytes.Buffer{} var ( strings []string rules []int ) for _, child := range concat.children { switch child.t { case ntMulti: child.writeStrToBuf(sb) case ntOne: sb.WriteRune(child.ch) case ntRef: if sb.Len() > 0 { rules = append(rules, len(strings)) strings = append(strings, sb.String()) sb.Reset() } slot := child.m if len(caps) > 0 && slot >= 0 { slot = caps[slot] } rules = append(rules, -replaceSpecials-1-slot) default: panic(ErrReplacementError) } } if sb.Len() > 0 { rules = append(rules, len(strings)) strings = append(strings, sb.String()) } return &ReplacerData{ Rep: rep, Strings: strings, Rules: rules, }, nil }
go
{ "resource": "" }
q16390
replacementImpl
train
func replacementImpl(data *syntax.ReplacerData, buf *bytes.Buffer, m *Match) { for _, r := range data.Rules { if r >= 0 { // string lookup buf.WriteString(data.Strings[r]) } else if r < -replaceSpecials { // group lookup m.groupValueAppendToBuf(-replaceSpecials-1-r, buf) } else { switch -replaceSpecials - 1 - r { // special insertion patterns case replaceLeftPortion: for i := 0; i < m.Index; i++ { buf.WriteRune(m.text[i]) } case replaceRightPortion: for i := m.Index + m.Length; i < len(m.text); i++ { buf.WriteRune(m.text[i]) } case replaceLastGroup: m.groupValueAppendToBuf(m.GroupCount()-1, buf) case replaceWholeString: for i := 0; i < len(m.text); i++ { buf.WriteRune(m.text[i]) } } } } }
go
{ "resource": "" }
q16391
Fuzz
train
func Fuzz(data []byte) int { sdata := string(data) tree, err := Parse(sdata, RegexOptions(0)) if err != nil { return 0 } // translate it to code _, err = Write(tree) if err != nil { panic(err) } return 1 }
go
{ "resource": "" }
q16392
Listen
train
func Listen(network, addr string, listening chan bool) { ln, err := net.Listen(network, addr) if err != nil { log.Fatalf("Listen failed: %v\n", err) os.Exit(1) } s := newServer() go s.broadcastIdleEvents() listening <- true for { conn, err := ln.Accept() if err != nil { log.Printf("Accept failed: %v\n", err) continue } go s.handleConnection(textproto.NewConn(conn)) } }
go
{ "resource": "" }
q16393
Subsystems
train
func (w *Watcher) Subsystems(names ...string) { w.names <- names w.consume() w.conn.noIdle() }
go
{ "resource": "" }
q16394
Close
train
func (w *Watcher) Close() error { w.exit <- true w.consume() w.conn.noIdle() <-w.done // wait for idle to finish and channels to close // At this point, watch goroutine has ended, // so it's safe to close connection. return w.conn.Close() }
go
{ "resource": "" }
q16395
Close
train
func (c *Client) Close() (err error) { if c.text != nil { c.printfLine("close") err = c.text.Close() c.text = nil } return }
go
{ "resource": "" }
q16396
PlayID
train
func (c *Client) PlayID(id int) error { if id < 0 { return c.Command("playid").OK() } return c.Command("playid %d", id).OK() }
go
{ "resource": "" }
q16397
SeekPos
train
func (c *Client) SeekPos(pos int, d time.Duration) error { return c.Command("seek %d %f", pos, d.Seconds()).OK() }
go
{ "resource": "" }
q16398
SeekSongID
train
func (c *Client) SeekSongID(id int, d time.Duration) error { return c.Command("seekid %d %f", id, d.Seconds()).OK() }
go
{ "resource": "" }
q16399
SeekCur
train
func (c *Client) SeekCur(d time.Duration, relative bool) error { if relative { return c.Command("seekcur %+f", d.Seconds()).OK() } return c.Command("seekcur %f", d.Seconds()).OK() }
go
{ "resource": "" }