base/utils/strings.bro

Functions to assist with small string analysis and manipulation that can be implemented as Bro functions and don’t need to be implemented as built-in functions.

Source File:/scripts/base/utils/strings.bro

Summary

Functions

cut_tail: function Cut a number of characters from the end of the given string.
is_string_binary: function Returns true if the given string is at least 25% composed of 8-bit characters.
join_string_set: function Join a set of strings together, with elements delimited by a constant string.
string_escape: function Given a string, returns an escaped version.

Detailed Interface

Functions

cut_tail
Type:function (s: string, tail_len: count) : string

Cut a number of characters from the end of the given string.

S:a string to trim.
Tail_len:the number of characters to remove from the end of the string.
Returns:the given string with tail_len characters removed from the end.
is_string_binary
Type:function (s: string) : bool

Returns true if the given string is at least 25% composed of 8-bit characters.

join_string_set
Type:function (ss: set [string], j: string) : string

Join a set of strings together, with elements delimited by a constant string.

Ss:a set of strings to join.
J:the string used to join set elements.
Returns:a string composed of all elements of the set, delimited by the joining string.
string_escape
Type:function (s: string, chars: string) : string

Given a string, returns an escaped version.

S:a string to escape.
Chars:a string containing all the characters that need to be escaped.
Returns:a string with all occurrences of any character in chars escaped using \, and any literal \ characters likewise escaped.

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