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pswrap - creates C procedures from segments of PostScript language
pswrap [ -apr ] [ -o outputCfile ] [ -h outputHfile ] [ -s
maxstring ] inputfile
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.
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 redirected
from a file or pipe) is used. The input file can include text other than
wrap definitions. pswrap converts wrap definitions 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.
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
- 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.
Programming the Display PostScript
System with X (Addison-Wesley Publishing Company, Inc., 1993).
- -f specialHFile
- Adds a #include to the generated source
file for a special header file.
- -h outputHFile
- 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.
- -o outputCFile
- 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 definitions generated by pswrap are
in ANSI C procedure prototype syntax.
- 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 alignment to 4-byte boundaries and improves performance on some other
- Generates reentrant code for wraps shared by more than
one process (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.
- -s maxstring
- 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.
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 reserved.
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