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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).
- -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
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
- 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 architectures.
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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