mirror of
https://github.com/RevCurtisP/C02.git
synced 2024-06-01 05:41:34 +00:00
73 lines
2.8 KiB
Plaintext
73 lines
2.8 KiB
Plaintext
String Manipulation Module for C02
|
|
|
|
These functions are not part of the standard C and C++ string libraries.
|
|
They are included because they are more efficient than equivalent C02 code.
|
|
|
|
|
|
#include <stddef.h02>
|
|
#include <ctype.h02>
|
|
#include <string.h02>
|
|
|
|
The following functions are defined:
|
|
|
|
n = strapd(c, s); Appends character c to string s.
|
|
|
|
Returns the new length of the string.
|
|
|
|
Note: Calls strlen(), then writes c into the end
|
|
position and a 0 byte into the following position.
|
|
|
|
n = straps(s); Appends a space to string s.
|
|
|
|
Returns the new length of the string.
|
|
|
|
Note: Executes strspd with arguments ' ' and s.
|
|
|
|
n = strppd(c, s); Prepends character c to string s.
|
|
|
|
Returns the new length of the string.
|
|
|
|
Note: Calls strlen(), shifts the entire string one
|
|
character to the right and writes c to position 0.
|
|
|
|
n = strpps(s); Prepends a space to string s.
|
|
|
|
Returns the new length of the string.
|
|
|
|
Note: Executes strppd with arguments ' ' and s.
|
|
|
|
n = strpad(v,s); Right pads string s with spaces to length v.
|
|
|
|
If v is less than the current length of the
|
|
string. the string is not changed.
|
|
|
|
Returns the new length of the string.
|
|
|
|
Note: Calls strlen(), and if the result is less
|
|
than v, appends the appropriate number of spaces.
|
|
|
|
n = strlwr(s); Converts letters in string s to lowercase.
|
|
|
|
Returns the length of the string.
|
|
|
|
Note: Sets srcptr to &s, then iterates through
|
|
the string, calling tolowr() on each character,
|
|
|
|
n = strupr(s); Converts letters in string s to uppercase.
|
|
|
|
Returns the length of the string.
|
|
|
|
Note: Sets srcptr to &s, then iterates through
|
|
the string, calling touppr() on each character,
|
|
|
|
Note: This module expects the following functions to be defined
|
|
|
|
setdst(s); Set destination pointer
|
|
setsrc(s); Set source pointer and initialize index
|
|
|
|
along with the zero page variable pairs
|
|
|
|
srcptr Source String Pointer
|
|
dstptr Destination String Pointer
|
|
|