pswrap - creates C procedures from segments of PostScript language code
pswrap [ -apr ] [ -o outputCfile ] [ -h outputHfile ] [ -s maxstring ]
pswrap reads input from inputfile and creates C-callable procedures,
known as wraps, that send PostScript language code to the PostScript
interpreter. inputfile contains segments of PostScript language code
wrapped with a C-like procedure syntax.
Wraps are the most efficient way for an application to communicate with
the PostScript interpreter. For complete documentation of pswrap and
the language it accepts, see "pswrap Reference Manual" in Programming
the Display PostScript System with X.
A file that contains one or more wrap definitions. pswrap
transforms the definitions in inputfile into C procedures. If no
input file is specified, the standard input (which can be redi-
rected from a file or pipe) is used. The input file can include
text other than wrap definitions. pswrap converts wrap defini-
tions to C procedures and passes the other text through
unchanged. Therefore, it is possible to intersperse C-language
source code with wrap definitions in the input file.
Note: Although C code is allowed in a pswrap input file, it is
not allowed within a wrap body. In particular, no CPP macros
(for example, #define) are allowed inside a wrap.
-a Generates ANSI C procedure prototypes for procedure definitions
in outputCfile and, optionally, outputHfile. The -a option
allows compilers that recognize the ANSI C standard to do more
complete type checking of parameters. The -a option also causes
pswrap to generate const declarations.
Note: ANSI C procedure prototype syntax is not recognized by
most non-ANSI C compilers, including many compilers based on the
Portable C Compiler. Use the -a option only in conjunction with
a compiler that conforms to the ANSI C Standard.
Generates a header file that contains extern declarations for
non-static wraps. This file can be used in #include statements
in modules that use wraps. If the -a option is specified, the
declarations in the header file are ANSI C procedure prototypes.
If the -h option is omitted, a header file is not produced.
Specifies the file to which the generated wraps and passed-
through text are written. If omitted, the standard output is
used. If the -a option is also specified, the procedure defini-
tions generated by pswrap are in ANSI C procedure prototype syn-
-p Specifies that strings passed by wraps are padded so that each
data object begins on a long-word (4-byte) boundary. This option
allows wraps to run on architectures that restrict data align-
ment to 4-byte boundaries and improves performance on some other
-r Generates reentrant code for wraps shared by more than one pro-
cess (as in shared libraries). Reentrant code can be called
recursively or by more than one thread. The -r option causes
pswrap to generate extra code, so use it only when necessary.
Sets the maximum allowable length of a PostScript string object
or hexadecimal string object in the wrap body input. A syntax
error is reported if a string is not terminated with ) or >
within maxstring characters. maxstring cannot be set lower than
80; the default is 200.
Programming the Display PostScript System with X (Addison-Wesley Pub-
lishing Company, Inc., 1993).
Adobe Systems Incorporated
PostScript and Display PostScript are trademarks of Adobe Systems
Incorporated which may be registered in certain jurisdictions.
Copyright (c) 1988-1994 Adobe Systems Incorporated. All rights
Adobe Systems 4 Apr 1994 PSWRAP(1)
Man(1) output converted with