MPE/iX Intrinsics Reference Manual (32650-90905)

556 Chapter9
Command Definitions (MAIL-PUTJCW)
NLMATCHINIT
? Any character
Other metacharacter indicate choice, grouping, and ranges:
Char Selected
!
Transparency
, Choice
: Range
{} Grouping
[] Optional
+ Repetition (one or more)
* Repetition (zero or more)
Pattern operators are evaluated in the following order, where x and y are
any character for the language:
The repetition, concatenation, and choice operators can be used with
patterns. For instance: x,y are any pattern in this case.
pattern_len Integer (required)
Length, in bytes, of the
pattern to be compiled.
langid Integer by value (required)
The language ID number of the language to be used in compiling the
pattern .
comp_pattern Byte array (required)
A byte array specifying where the compiled
pattern is to be constructed.
comp_buf _size Integer (required)
The length of the
comp_pattern , in bytes, available for constructing the
compiled
pattern .
Operation Notes
NLMATCHINIT converts the regular expression in pattern to a reduced, finite state machine
and places it in
comp_pattern , where pattern_len is the expression's length in bytes, and
comp_buf_size is the maximum size of the comp_pattern in bytes.
Char Operation Example
! Transparency !x
: Range x:y
+/* Repetition (1/0 or more) x+ or x*
Concatenation xy
, Choice x,y