Modula-2 || Compiler & Tools || Library || Search Engine

Ulm's Modula-2 Library:
StrSpec

NAME

StrSpec - special string operations

SYNOPSIS

PROCEDURE StrPartCpy(VAR target           : ARRAY OF CHAR;
                         source           : ARRAY OF CHAR;
                         position, number : CARDINAL);



PROCEDURE StrDel(VAR target           : ARRAY OF CHAR;
                     position, number : CARDINAL);



PROCEDURE StrIns(VAR target      : ARRAY OF CHAR;
                     insertion   : ARRAY OF CHAR;
                     position    : CARDINAL);



PROCEDURE StrPos(source,
                 search : ARRAY OF CHAR) : CARDINAL;

DESCRIPTION

IMPORTANT:
In the entire module the first character of a string is at position zero.

StrPartCpy: copies number characters starting at position position from source to target. The copying is finished by reaching the end of either source or target, or when number characters are copied. The index of the first character in target is zero.
If the resulting string is too large for target, trailing characters are cut off.
StrDel: deletes number characters starting at position.
At the end of the string deletion stops.
StrIns: inserts insertion in target in front of position.
If the resulting string is too large for target, trailing characters are cut off.
StrPos: returns the starting position of the sub-string search within source.
If search isn't in source the result is more than the greatest possible index for a character in source.

AUTHOR

Gernot Skalla, Universität Osnabrück

Edited by: borchert, last change: 1997/02/25, revision: 1.2, converted to HTML: 1997/04/28