Golang strconv.Atoi64函數代碼示例

func showHandler(backend appchilada.Backend) func(http.ResponseWriter, *http.Request) {
	getTemplate := getTemplateFunc("resources/show.html")
	return func(w http.ResponseWriter, r *http.Request) {
		r.ParseForm()
		name := r.URL.Path[len("/show/"):]
		var start, end int64
		if startVal := r.Form.Get("start"); startVal != "" {
			start, _ = strconv.Atoi64(startVal)
		} else {
			// Default to last 24 hours
			start = time.Seconds() - 86400
		}
		if endVal := r.Form.Get("end"); endVal != "" {
			end, _ = strconv.Atoi64(endVal)
		} else {
			// Default to now
			end = time.Seconds()
		}
		results, err := backend.Read(name, appchilada.Interval{start, end})
		if err != nil {
			// TODO Output error in response
			log.Printf("Error getting results for %s: %v", name, err)
			return
		}
		if err := getTemplate().Execute(w, results); err != nil {
			log.Printf("Error executing template: %v", err)
		}
	}
}

func tfquery(req *http.Request) {
	query := strings.Split(req.URL.RawQuery, "&", 0)

	//fmt.Printf("path : %v\n", path)
	//fmt.Printf("query: %v\n", query)

	for i := 0; i < len(query); i++ {
		nv := strings.Split(query[i], "=", 2)
		if len(nv) == 2 {
			switch nv[0] {
			case "b":
				begindate = nv[1]
			case "e":
				enddate = nv[1]
			case "t":
				title, _ = http.URLUnescape(nv[1])
			case "c":
				tcount, _ = strconv.Atoi(nv[1])
			case "l":
				lineheight, _ = strconv.Atoi64(nv[1])
			case "p":
				picwidth, _ = strconv.Atoi64(nv[1])
			case "s":
				spacing, _ = strconv.Atoi(nv[1])
			case "m":
				markerwidth, _ = strconv.Atoi64(nv[1])
			}
		}
		//fmt.Printf("nv: %v\n", nv)
		//showparams("Using  ")
	}
}

func checkJoinByteRanges(t *testing.T, inputRangesStr string, expectedRangeStr string) {
	inputRanges := make([]ByteRange, 0, 10)
	appendRange := func(offset int64, length int64) {
		inputRanges = inputRanges[0 : len(inputRanges)+1]
		inputRanges[len(inputRanges)-1] = ByteRange{offset, length}
	}

	for _, rangeStr := range strings.Split(inputRangesStr, ",", -1) {
		//print("Got \"", rangeStr, "\" from input \"", inputRangesStr, "\"\n")
		if len(rangeStr) == 0 {
			// Uh, this is stupid.
			continue
		}
		parts := strings.Split(rangeStr, ":", 2)
		offset, _ := strconv.Atoi64(parts[0])
		length, _ := strconv.Atoi64(parts[1])
		appendRange(offset, length)
	}
	actualRange := joinByteRanges(inputRanges)
	actualRangeStr := actualRange.String()
	if actualRangeStr != expectedRangeStr {
		t.Errorf("Ranges \"%s\": expected compression to %s, actual %s\n", inputRangesStr, expectedRangeStr, actualRangeStr)
		return
	}
}

func rateLimitStats(resp *http.Response) {
	if resp == nil {
		return
	}
	curr := time.Seconds()
	reset, _ := strconv.Atoi64(resp.GetHeader("X-RateLimit-Reset"))
	remaining, _ := strconv.Atoi64(resp.GetHeader("X-RateLimit-Remaining"))
	if remaining < 1 && reset-curr > 0 {
		log.Printf("Twitter API limits exceeded. Sleeping for %d seconds.\n", reset-curr)
		time.Sleep((reset - curr) * 1e9)
	}
}

// parseRange parses a Range header string as per RFC 2616.
func parseRange(s string, size int64) ([]httpRange, os.Error) {
	if s == "" {
		return nil, nil // header not present
	}
	const b = "bytes="
	if !strings.HasPrefix(s, b) {
		return nil, os.NewError("invalid range")
	}
	var ranges []httpRange
	for _, ra := range strings.Split(s[len(b):], ",", -1) {
		i := strings.Index(ra, "-")
		if i < 0 {
			return nil, os.NewError("invalid range")
		}
		start, end := ra[:i], ra[i+1:]
		var r httpRange
		if start == "" {
			// If no start is specified, end specifies the
			// range start relative to the end of the file.
			i, err := strconv.Atoi64(end)
			if err != nil {
				return nil, os.NewError("invalid range")
			}
			if i > size {
				i = size
			}
			r.start = size - i
			r.length = size - r.start
		} else {
			i, err := strconv.Atoi64(start)
			if err != nil || i > size || i < 0 {
				return nil, os.NewError("invalid range")
			}
			r.start = i
			if end == "" {
				// If no end is specified, range extends to end of the file.
				r.length = size - r.start
			} else {
				i, err := strconv.Atoi64(end)
				if err != nil || r.start > i {
					return nil, os.NewError("invalid range")
				}
				if i >= size {
					i = size - 1
				}
				r.length = i - r.start + 1
			}
		}
		ranges = append(ranges, r)
	}
	return ranges, nil
}

func FileHandler(store fs.LocalStore) http.HandlerFunc {
	return func(resp http.ResponseWriter, req *http.Request) {
		setBinaryResp(resp)

		strong, hasStrong := mux.Vars(req)["strong"]
		if !hasStrong {
			writeResponseError(resp, http.StatusInternalServerError,
				"Missing parameter: strong")
			return
		}

		offsetStr, hasOffset := mux.Vars(req)["offset"]
		if !hasOffset {
			writeResponseError(resp, http.StatusInternalServerError,
				"Missing parameter: offset")
			return
		}
		offset, err := strconv.Atoi64(offsetStr)
		if err != nil {
			writeResponseError(resp, http.StatusInternalServerError,
				fmt.Sprintf("Invalid format for length: %s", offsetStr))
			return
		}

		lengthStr, hasLength := mux.Vars(req)["length"]
		if !hasLength {
			writeResponseError(resp, http.StatusInternalServerError,
				"Missing parameter: length")
			return
		}
		length, err := strconv.Atoi64(lengthStr)
		if err != nil {
			writeResponseError(resp, http.StatusInternalServerError,
				fmt.Sprintf("Invalid format for length: %s", lengthStr))
			return
		}

		buffer := bytes.NewBuffer([]byte{})
		n, err := store.ReadInto(strong, offset, length, buffer)
		if err != nil {
			writeResponseError(resp, http.StatusInternalServerError, err.String())
			return
		}
		if n < length {
			writeResponseError(resp, http.StatusInternalServerError, io.ErrShortWrite.String())
		}

		resp.Write(buffer.Bytes())
	}
}

func PointFromString(ptstr string) (*Point, os.Error) {
	re := regexp.MustCompile("(-?[0-9]+),(-?[0-9]+),(-?[0-9]+),(-?[0-9]+)")
	matches := re.FindStringSubmatch(ptstr)
	if len(matches) < 5 {
		return nil, os.NewError("invalid pointstring")
	}
	x, ex := strconv.Atoi64(matches[1])
	x2, ex2 := strconv.Atoi64(matches[2])
	y, ey := strconv.Atoi64(matches[3])
	y2, ey2 := strconv.Atoi64(matches[4])
	if ex != nil || ex2 != nil || ey != nil || ey2 != nil {
		return &Point{new(Integer), new(Integer)}, os.NewError("point.FromString: failed to parse coordinates.")
	}
	return &Point{&Integer{x, x2}, &Integer{y, y2}}, nil
}

// verifyHmac verifies that a message authentication code (MAC) is valid.
//
// The provided source bytes must be in the form "value|timestamp|message".
func verifyHmac(h hash.Hash, key string, value []byte, timestamp, minAge,
	maxAge int64) ([]byte, error) {
	parts := bytes.SplitN(value, []byte("|"), 3)
	if len(parts) != 3 {
		return nil, ErrAuthentication
	}
	rv := parts[0]
	tst, _ := strconv.Atoi64(string(parts[1]))
	msg := parts[2]
	if tst == 0 {
		return nil, ErrBadTimestamp
	}
	if minAge != 0 && tst > timestamp-minAge {
		return nil, ErrNewTimestamp
	}
	if maxAge != 0 && tst < timestamp-maxAge {
		return nil, ErrOldTimestamp
	}
	// There are several other operations being done by the Encoder so not
	// sure if ConstantTimeCompare() is worth at all.
	msg2 := mac(h, key, rv, tst)
	if len(msg) != len(msg2) || subtle.ConstantTimeCompare(msg, msg2) != 1 {
		return nil, ErrAuthentication
	}
	return rv, nil
}

// Given a tag string with the format specified in the package comment,
// 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) {
		switch {
		case part == "optional":
			ret.optional = true
		case part == "explicit":
			ret.explicit = true
			if ret.tag == nil {
				ret.tag = new(int)
				*ret.tag = 0
			}
		case strings.HasPrefix(part, "default:"):
			i, err := strconv.Atoi64(part[8:len(part)])
			if err == nil {
				ret.defaultValue = new(int64)
				*ret.defaultValue = i
			}
		case strings.HasPrefix(part, "tag:"):
			i, err := strconv.Atoi(part[4:len(part)])
			if err == nil {
				ret.tag = new(int)
				*ret.tag = i
			}
		}
	}
	return
}

func parseIndexLine(l []byte) (*indexInfo, error) {
	//	fmt.Fprintf (os.Stderr, "Processing line:\n%s\n", l)
	newIndexInfo := indexInfo{}
	var err error
	fields := bytes.Fields(l)
	newIndexInfo.lemma = fields[LEMMA]
	//	newIndexInfo.pos, err = strconv.Atoui64(string(fields[POS]))
	if len(fields[POS]) > 1 {
		return nil, ERR_MSG(SYNTACTIC_CATEGORY_TOO_LONG)
	}
	newIndexInfo.pos = fields[POS][0]

	ptr_cnt, err := strconv.Atoi(string(fields[PTR_CNT]))
	if err != nil {
		return nil, err
	}

	ptr_symbols := fields[SYMBOL : SYMBOL+ptr_cnt]
	newIndexInfo.ptr_symbols = ptr_symbols

	newIndexInfo.tagsense_cnt, err = strconv.Atoi(string(fields[TAGSENSE_CNT+ptr_cnt]))
	if err != nil {
		return nil, err
	}
	offsets_strs := fields[(SYNSET_OFFSET + ptr_cnt - 1):]
	offsets := make([]int64, len(offsets_strs))
	for i, offset := range offsets_strs {
		offsets[i], err = strconv.Atoi64(string(offset))
		if err != nil {
			return nil, err
		}
	}
	newIndexInfo.offsets = offsets
	return &newIndexInfo, nil
}

func ParseCase(i int, line string) *Auction {
	a := &Auction{Case: i}
	tokens := strings.Fields(line)
	for p, s := range tokens {
		val, err := strconv.Atoi64(s)
		if err != nil {
			log.Panic(i, line, err)
		}
		switch p {
		case 0:
			a.N = val
		case 1:
			a.P1 = val
		case 2:
			a.W1 = val
		case 3:
			a.M = val
		case 4:
			a.K = val
		case 5:
			a.A = val
		case 6:
			a.B = val
		case 7:
			a.C = val
		case 8:
			a.D = val
		}
	}
	if Debug {
		log.Printf("%#v", *a)
	}
	return a
}

func (ctx *Context) GetSecureCookie(name string) (string, bool) {

	cookie, ok := ctx.Request.Cookies[name]

	if !ok {
		return "", false
	}

	parts := strings.Split(cookie, "|", 3)

	val := parts[0]
	timestamp := parts[1]
	sig := parts[2]

	if getCookieSig([]byte(val), timestamp) != sig {
		return "", false
	}

	ts, _ := strconv.Atoi64(timestamp)

	if time.Seconds()-31*86400 > ts {
		return "", false
	}

	buf := bytes.NewBufferString(val)
	encoder := base64.NewDecoder(base64.StdEncoding, buf)

	res, _ := ioutil.ReadAll(encoder)
	return string(res), true
}

func decodeSecureCookie(value string) (user string, session string, err os.Error) {
	parts := strings.Split(value, "|", 3)
	if len(parts) != 3 {
		err = os.NewError("Malformed cookie value")
		return
	}
	val := parts[0]
	timestamp := parts[1]
	sig := parts[2]
	// Check signature
	if getCookieSig([]byte(val), timestamp) != sig {
		return "", "", os.NewError("Signature error, cookie is invalid")
	}
	// Check time stamp
	ts, _ := strconv.Atoi64(timestamp)
	if ts+maxAge < time.UTC().Seconds() {
		return "", "", os.NewError("Cookie is outdated")
	}

	buf := bytes.NewBufferString(val)
	encoder := base64.NewDecoder(base64.StdEncoding, buf)
	res, _ := ioutil.ReadAll(encoder)
	str := string(res)
	lst := strings.Split(str, "!", -1)
	if len(lst) != 2 {
		return "", "", os.NewError("Missing !")
	}
	return lst[0], lst[1], nil
}

func parseIndexLine(l []byte) *indexInfo {
	//	fmt.Fprintf (os.Stderr, "Processing line:\n%s\n", l)
	newIndexInfo := indexInfo{}
	var err os.Error
	fields := bytes.Fields(l)
	ptr_cnt, err := strconv.Atoi(string(fields[PTR_CNT]))
	if err != nil {
		fmt.Fprintf(os.Stderr, "I had a problem trying to convert '%s' to int\n", fields[PTR_CNT])
		os.Exit(1)
	}
	newIndexInfo.lemma = fields[LEMMA]
	//	newIndexInfo.pos, err = strconv.Atoui64(string(fields[POS]))
	if len(fields[POS]) > 1 {
		fmt.Fprintf(os.Stderr, "POS has to be 1 letter code ('n', 'v', 'a' or 'r') and I have %s\n", fields[POS])
		os.Exit(1)
	}
	newIndexInfo.pos = fields[POS][0]

	newIndexInfo.tagsense_cnt, err = strconv.Atoi(string(fields[TAGSENSE_CNT+ptr_cnt]))
	if err != nil {
		fmt.Fprintf(os.Stderr, "I had a problem trying to convert %s to int32\n", fields[TAGSENSE_CNT+ptr_cnt])
		os.Exit(1)
	}
	offsets_strs := fields[(SYNSET_OFFSET + ptr_cnt):]
	offsets := make([]int64, len(offsets_strs))
	for i, offset := range offsets_strs {
		offsets[i], err = strconv.Atoi64(string(offset))
		if err != nil {
			fmt.Fprintf(os.Stderr, "I had a problem trying to convert the offset %s to int63\n", offset)
			os.Exit(1) // log.Fatal?
		}
	}
	newIndexInfo.offsets = offsets
	return &newIndexInfo
}

func (c *Client) FetchVia(b *blobref.BlobRef, v []*blobref.BlobRef) (blobref.ReadSeekCloser, int64, os.Error) {
	url := fmt.Sprintf("%s/camli/%s", c.server, b)

	if len(v) > 0 {
		buf := bytes.NewBufferString(url)
		buf.WriteString("?via=")
		for i, br := range v {
			if i != 0 {
				buf.WriteString(",")
			}
			buf.WriteString(br.String())
		}
		url = buf.String()
	}

	req := http.NewGetRequest(url)

	if c.HasAuthCredentials() {
		req.Header["Authorization"] = c.authHeader()
	}
	resp, err := req.Send()
	if err != nil {
		return nil, 0, err
	}

	var size int64
	if s := resp.GetHeader("Content-Length"); s != "" {
		size, _ = strconv.Atoi64(s)
	}

	return nopSeeker{resp.Body}, size, nil
}