printf, sprintf - formatted output conversion
void printf( string format, ... );
string sprintf( string format, ... );
An implementation of (s)printf() for LPC, with quite a few extensions
Implemented by Lynscar (Sean A Reith).
This version supports the following as modifiers:
" " pad positive integers with a space.
"+" pad positive integers with a plus sign.
"-" left adjusted within field size.
NB: std (s)printf() defaults to right justification, which is
unnatural in the context of a mainly string based language but
has been retained for "compatability".
"|" centered within field size.
"=" column mode if strings are greater than field size. This is
only meaningful with strings, all other types ignore this. Col‐
umns are auto-magically word wrapped.
"#" table mode, print a list of '\n' separated 'words' in a table
within the field size. only meaningful with strings.
n specifies the field size, a '*' specifies to use the corre‐
sponding arg as the field size. If n is prepended with a zero,
then is padded zeros, else it is padded with spaces (or speci‐
fied pad string).
"."n precision of n, simple strings truncate after this (if preci‐
sion is greater than field size, then field size = precision),
tables use precision to specify the number of columns (if pre‐
cision not specified then tables calculate a best fit), all
other types ignore this.
":"n n specifies the fs _and_ the precision, if n is prepended by a
zero then it is padded with zeros instead of spaces.
"@" the argument is an array. the corresponding format_info (minus
the "@") is applyed to each element of the array.
"´X´" The char(s) between the single-quotes are used to pad to field
size (defaults to space) (if both a zero (in front of field
size) and a pad string are specified, the one specified second
overrules). NOTE: to include "'" in the pad string, you must
use "\'" (as the backslash has to be escaped past the inter‐
preter), similarly, to include "
The following are the possible type specifiers.
% in which case no arguments are interpreted, and a "%" is
inserted, and all modifiers are ignored.
O the argument is an LPC datatype.
s the argument is a string.
d, i the integer arg is printed in decimal.
c the integer arg is to be printed as a character.
o the integer arg is printed in octal.
x the integer arg is printed in hex.
X the integer arg is printed in hex (with A-F in capitals).
f floating point number
sprintf() returns the formatted string.