utils

func DescribeBytes ¶

func DescribeBytes(size int64) string

DescribeBytes converts bytes to KiB or MiB. Returns a string.

func ExtractKeywords ¶

func ExtractKeywords(data []byte, keywordsToLookFor []string) ([]byte, map[string][]byte)

ExtractKeywords takes a source file as `data` and a list of keywords to

• look for. Lines without keywords are returned, together with a map
• from keywords to []bytes from the source `data`. *
• The keywords in the data must be on the form "keyword: value",
• and can be within single-line HTML comments (<-- ... -->).

func ExtractLocalImagePaths ¶ added in v1.15.5

func ExtractLocalImagePaths(html string) []string

ExtractLocalImagePaths can be used to find local image filenames that are included in the given HTML

func FilterIntoGroups ¶

func FilterIntoGroups(bytelines [][]byte, filterfunc func([]byte) bool) ([][]byte, [][]byte)

FilterIntoGroups filters []byte slices into two groups, depending on the given filter function

func GetDomain ¶

func GetDomain(req *http.Request) string

GetDomain returns the host/domain of a request, handling both IPv4 and IPv6

func GetFilenames ¶

func GetFilenames(dirname string) []string

GetFilenames retrieves a list of filenames from a given directory name (that must exist)

func HostPortToURL ¶ added in v1.17.6

func HostPortToURL(addr string) string

HostPortToURL converts an address to a URL-friendly host:port string. Converts ":8080" to "localhost:8080" and ensures IPv6 addresses have brackets.

func Infostring ¶

func Infostring(functionName string, args []string) string

Infostring builds up a string on the form "functionname(arg1, arg2, arg3)"

func IsIPv6 ¶ added in v1.17.6

func IsIPv6(host string) bool

IsIPv6 checks if the given string is an IPv6 address

func JoinHostPort ¶ added in v1.17.6

func JoinHostPort(host, colonPort string) string

JoinHostPort combines a host and a colonPort (like ":8080") into an address. Handles IPv6 by adding brackets as needed. If host is empty, returns colonPort as-is.

func URL2filename ¶

func URL2filename(dirname, urlpath string) string

URL2filename translates a given URL path to a probable full filename

func WriteStatus ¶

func WriteStatus(sb *strings.Builder, title string, flags map[string]bool)

WriteStatus writes status messages to a string Builder The flags argument contains the flag names, and if they are enabled or not