Golang strings.Replacer类代码示例

// Inserts license header to file represented by filename
func insertLicense(filename string, replacer *strings.Replacer, config *Config) error {
	licensedFile := bytes.NewBuffer(nil)

	lcopyright, err := Asset(filepath.Join("licenses", string(config.LicenseType)+".copyright"))

	if err == nil {
		err = prependEOLComment(licensedFile, config, lcopyright)
		if err != nil {
			return err
		}
	}

	lheader, err := Asset(filepath.Join("licenses", string(config.LicenseType)+".header"))
	if err == nil {
		err := prependEOLComment(licensedFile, config, lheader)
		if err != nil {
			return err
		}
	}

	data, err := ioutil.ReadFile(filename)
	_, err = licensedFile.WriteString(string(data))
	if err != nil {
		return err
	}

	filedata := replacer.Replace(licensedFile.String())

	return ioutil.WriteFile(filename, []byte(filedata), 0640)
}

// writeTo serializes the character data entity to the writer.
func (c *CharData) writeTo(w *bufio.Writer, s *WriteSettings) {
	var r *strings.Replacer
	if s.CanonicalText {
		r = xmlReplacerCanonicalText
	} else {
		r = xmlReplacerNormal
	}
	w.WriteString(r.Replace(c.Data))
}

func (n *ninjaString) ValueWithEscaper(pkgNames map[*packageContext]string,
	escaper *strings.Replacer) string {

	str := escaper.Replace(n.strings[0])
	for i, v := range n.variables {
		str += "${" + v.fullName(pkgNames) + "}"
		str += escaper.Replace(n.strings[i+1])
	}
	return str
}

// ParseMemoryMap parses a memory map in the format of
// /proc/self/maps, and overrides the mappings in the current profile.
// It renumbers the samples and locations in the profile correspondingly.
func (p *Profile) ParseMemoryMap(rd io.Reader) error {
	b := bufio.NewReader(rd)

	var attrs []string
	var r *strings.Replacer
	const delimiter = "="
	for {
		l, err := b.ReadString('\n')
		if err != nil {
			if err != io.EOF {
				return err
			}
			if l == "" {
				break
			}
		}
		if l = strings.TrimSpace(l); l == "" {
			continue
		}

		if r != nil {
			l = r.Replace(l)
		}
		m, err := parseMappingEntry(l)
		if err != nil {
			if err == errUnrecognized {
				// Recognize assignments of the form: attr=value, and replace
				// $attr with value on subsequent mappings.
				if attr := strings.SplitN(l, delimiter, 2); len(attr) == 2 {
					attrs = append(attrs, "$"+strings.TrimSpace(attr[0]), strings.TrimSpace(attr[1]))
					r = strings.NewReplacer(attrs...)
				}
				// Ignore any unrecognized entries
				continue
			}
			return err
		}
		if m == nil || (m.File == "" && len(p.Mapping) != 0) {
			// In some cases the first entry may include the address range
			// but not the name of the file. It should be followed by
			// another entry with the name.
			continue
		}
		if len(p.Mapping) == 1 && p.Mapping[0].File == "" {
			// Update the name if this is the entry following that empty one.
			p.Mapping[0].File = m.File
			continue
		}
		p.Mapping = append(p.Mapping, m)
	}
	p.remapLocationIDs()
	p.remapFunctionIDs()
	p.remapMappingIDs()
	return nil
}

// ParseProcMaps parses a memory map in the format of /proc/self/maps.
// ParseMemoryMap should be called after setting on a profile to
// associate locations to the corresponding mapping based on their
// address.
func ParseProcMaps(rd io.Reader) ([]*Mapping, error) {
	var mapping []*Mapping

	b := bufio.NewReader(rd)

	var attrs []string
	var r *strings.Replacer
	const delimiter = "="
	for {
		l, err := b.ReadString('\n')
		if err != nil {
			if err != io.EOF {
				return nil, err
			}
			if l == "" {
				break
			}
		}
		if l = strings.TrimSpace(l); l == "" {
			continue
		}

		if r != nil {
			l = r.Replace(l)
		}
		m, err := parseMappingEntry(l)
		if err != nil {
			if err == errUnrecognized {
				// Recognize assignments of the form: attr=value, and replace
				// $attr with value on subsequent mappings.
				if attr := strings.SplitN(l, delimiter, 2); len(attr) == 2 {
					attrs = append(attrs, "$"+strings.TrimSpace(attr[0]), strings.TrimSpace(attr[1]))
					r = strings.NewReplacer(attrs...)
				}
				// Ignore any unrecognized entries
				continue
			}
			return nil, err
		}
		if m == nil {
			continue
		}
		mapping = append(mapping, m)
	}
	return mapping, nil
}

// Inserts license header to file represented by filename
func insertLicense(filename string, replacer *strings.Replacer, config *Config) error {
	licensedFile := bytes.NewBuffer(nil)

	lcopyright, err := Asset(filepath.Join("licenses", string(config.LicenseType)+".copyright"))

	cr := false
	if err == nil {
		err = prependEOLComment(licensedFile, config.EOLCommentStyle,
			[]byte(replacer.Replace(string(lcopyright))))
		if err != nil {
			return err
		}
		cr = true
	}

	lheader, err := Asset(filepath.Join("licenses", string(config.LicenseType)+".header"))
	if err == nil {
		plus := ""
		if cr {
			plus = "\n"
		}
		err := prependEOLComment(licensedFile, config.EOLCommentStyle,
			[]byte(replacer.Replace(plus+string(lheader))))
		if err != nil {
			return err
		}
	}
	// Extra newline for separating license code from package docs.
	licensedFile.WriteByte('\n')

	// Only use the replacer for the license, not the whole file.

	fh, err := os.Open(filename)
	if err != nil {
		return err
	}
	_, err = io.Copy(licensedFile, fh)
	fh.Close()
	if err != nil {
		return err
	}

	return ioutil.WriteFile(filename, licensedFile.Bytes(), 0640)
}

func parseProcMapsFromScanner(s *bufio.Scanner) ([]*Mapping, error) {
	var mapping []*Mapping

	var attrs []string
	var r *strings.Replacer
	const delimiter = "="
	for s.Scan() {
		line := strings.TrimSpace(s.Text())
		if line == "" {
			continue
		}

		if r != nil {
			line = r.Replace(line)
		}
		m, err := parseMappingEntry(line)
		if err != nil {
			if err == errUnrecognized {
				// Recognize assignments of the form: attr=value, and replace
				// $attr with value on subsequent mappings.
				if attr := strings.SplitN(line, delimiter, 2); len(attr) == 2 {
					attrs = append(attrs, "$"+strings.TrimSpace(attr[0]), strings.TrimSpace(attr[1]))
					r = strings.NewReplacer(attrs...)
				}
				// Ignore any unrecognized entries
				continue
			}
			return nil, err
		}
		if m == nil {
			continue
		}
		mapping = append(mapping, m)
	}
	if err := s.Err(); err != nil {
		return nil, err
	}
	return mapping, nil
}

func pageRenderLinks(content string) (res string) {
	re := regexp.MustCompile("\\[\\[.*\\]\\]")
	links := re.FindAllString(content, -1)

	for _, include := range links {
		title := strings.Trim(include, "[] ")

		renderAsLink := false
		if title[0] == '@' {
			renderAsLink = true
			title = title[1:]
		}

		isFile := false
		if len(title) > 5 && title[0:5] == "file:" {
			isFile = true
			title = title[5:]
		}

		var r *strings.Replacer
		if renderAsLink {
			if isFile {
				r = strings.NewReplacer(include, "/file/get/"+title)
			} else {
				r = strings.NewReplacer(include, "/page/"+title)
			}
		} else {
			if isFile {
				r = strings.NewReplacer(include, "<a href=\"/file/get/"+title+"\" >"+title+"</a>")
			} else {
				r = strings.NewReplacer(include, "<a href=\"/page/"+title+"\" >"+title+"</a>")
			}
		}
		content = r.Replace(content)
	}
	res = content
	return
}

// SetPlaceholder fix @placeholder in post values
func (p *Page) SetPlaceholder(htmlReplacer *strings.Replacer) {
	p.contentBytes = []byte(htmlReplacer.Replace(string(p.contentBytes)))
}

// SetPlaceholder fix @placeholder in post values
func (p *Post) SetPlaceholder(stringReplacer, htmlReplacer *strings.Replacer) {
	p.Thumb = stringReplacer.Replace(p.Thumb)
	p.contentBytes = []byte(htmlReplacer.Replace(string(p.contentBytes)))
	p.briefBytes = []byte(htmlReplacer.Replace(string(p.briefBytes)))
}