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Strings can be directly compared using the string comparison operators. Additionally, strings can also be matched using wildcards such as *, and ?. This is known as wildcard matching or pattern matching. * matches 0 or more characters while ? matches exactly one character.
Exhibit 2.14. Example for how to comparing strings
if "index.txt" eq ~my_var begin end if "*.txt" eq ~my_var begin end |
The ftpwildcardmatch command can be used to perform wildcard matching. Additionally, this command allows case insensitive pattern matching when i is passed as a match option. If the strings match, the predefined flag ftpresult is set to the predefined constant success.
Exhibit 2.15. Syntax of command for performing wildcard matching
ftpwildcardmatch <string to match>, <wildcard pattern string>, <match options>; |
Exhibit 2.16. Example for using the command for wildcard matching
ftpwildcardmatch ~my_var, "*.txt", "i"; #case insensitive wildcard match if success eq ftpresult begin end |
The ftpregexmatch command can be used to perform matching using regular expressions similar to that used in Perl. This command allows case insensitive regular expression matching when i is passed as a match option. If the strings match, the predefined flag ftpresult is set to the predefined constant success. Note that for the regular expression pattern string, a \ character must be preceeded by another \.
Exhibit 2.17. Syntax of another string matching command
ftpregexmatch <string to match>, <regex pattern string>, <match options>; |
Exhibit 2.18. Example for using the command string matching
ftpregexmatch ~my_var, "[a-zA-Z0-9]+\\.log", ""; #case sensitive regex match if success eq ftpresult begin end |