Substr; Text_Str; Text_Strn; Tokenize - Red Hat ENTERPRISE LINUX 5.4 - SYSTEMTAP LANGUAGE Reference Manual

Systemtap language reference

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Chapter 9. Predefined functions

This function converts the string representation of a number to an integer. The base parameter

indicates the number base to assume for the string (e.g. 16 for hex, 8 for octal, 2 for binary).

9.9.4. substr

General syntax:

substr:string (str:string, start:long, stop:long)

This function returns the substring of str starting from character position start and ending at

character position stop.

General syntax:

text_str:string (input:string)

This function accepts a string argument. Any ASCII characters in the string that are not printable are

replaced by a corresponding escape sequence in the returned string.

General syntax:

text_strn:string (input:string, len:long, quoted:long)

This function accepts a string of length len. Any ASCII characters that are not printable are replaced

by a corresponding escape sequence in the returned string. If quoted is not null, the function adds a

backslash character to the output.

General syntax:

tokenize:string (input:string, delim:string)

This function returns the next non-empty token in the given input string, where the tokens are delimited

by characters in the delim string. If the input string is non-NULL, it returns the first token. If the input

string is NULL, it returns the next token in the string passed in the previous call to tokenize. If no

delimiter is found, the entire remaining input string is returned. It returns NULL when no more tokens

are available.

The following functions provide methods to extract time data.

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