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CHAPTER 11

CATC Scripting Language for USB Primitives

Comments

Format is used to control the way that arguments will print out. The format string

may contain conversion specifications that affect the way in which the arguments

in the value string are returned. Format conversion characters, flag characters, and

field width modifiers are used to define the conversion specifications.

Example

Format("0x%02X", 20);

would yield the string 0x14.

Format can only handle one value at a time, so

Format("%d %d", 20, 30);

would not work properly. Furthermore, types that do not match what is specified in

the format string will yield unpredictable results.

Format Conversion Characters

These are the format conversion characters used in CSL:

A conversion specification begins with a percent sign (%) and ends with a conver-

sion character. The following optional items can be included, in order, between the

% and the conversion character to further control argument formatting:

• Flag characters are used to further specify the formatting. There are five flag characters:

• Aminussign(-) will cause an argument to be left-aligned in its field. Without the

minus sign, the default position of the argument is right-aligned.

• A plus sign will insert a plus sign (+) before a positive signed integer. This only works

with the conversion characters

d and i.

Code Type Output

c Integer Character

d Integer Signed decimal integer.

i Integer Signed decimal integer

o Integer Unsigned octal integer

u Integer Unsigned decimal integer

x Integer Unsigned hexadecimal integer, using "abcdef."

X Integer Unsigned hexadecimal integer, using "ABCDEF."

s String String

Table 11.1: Format Conversion Characters

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