MirOS Manual: pswrap(1)


PSWRAP(1)           UNIX Programmer's Manual            PSWRAP(1)

NAME

     pswrap - creates C procedures from segments of PostScript
     language code

SYNOPSIS

     pswrap [ -apr ] [ -o outputCfile ] [ -h outputHfile ] [ -s
     maxstring ] inputfile

DESCRIPTION

     pswrap reads input from inputfile and creates C-callable
     procedures, known as wraps, that send PostScript language
     code to the PostScript interpreter. inputfile contains seg-
     ments of PostScript language code wrapped with a C-like pro-
     cedure syntax.

     Wraps are the most efficient way for an application to com-
     municate with the PostScript interpreter. For complete docu-
     mentation of pswrap and the language it accepts, see "pswrap
     Reference Manual" in Programming the Display PostScript Sys-
     tem with X.

OPTIONS

     inputfile
          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 pro-
          cedures 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 particu-
          lar, no CPP macros (for example, #define) are allowed
          inside a wrap.

     -a   Generates ANSI C procedure prototypes for procedure
          definitions in outputCfile and, optionally, outputH-
          file. 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 gen-
          erate const declarations.

          Note: ANSI C procedure prototype syntax is not recog-
          nized by most non-ANSI C compilers, including many com-
          pilers based on the Portable C Compiler. Use the -a
          option only in conjunction with a compiler that con-
          forms to the ANSI C Standard.

Adobe Systems 4 Apr 1994 1


PSWRAP(1)           UNIX Programmer's Manual            PSWRAP(1)

     -h outputHFile
          Generates a header file that contains extern declara-
          tions 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 stan-
          dard output is used. If the -a option is also speci-
          fied, the procedure definitions generated by pswrap are
          in ANSI C procedure prototype syntax.

     -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 architec-
          tures that restrict data alignment to 4-byte boundaries
          and improves performance on some other architectures.

     -r   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.

SEE ALSO

     Programming the Display PostScript System with X (Addison-
     Wesley Publishing Company, Inc., 1993).

AUTHOR

     Adobe Systems Incorporated

NOTES

     PostScript and Display PostScript are trademarks of Adobe
     Systems Incorporated which may be registered in certain jur-
     isdictions.

     Copyright (c) 1988-1994 Adobe Systems Incorporated.  All
     rights reserved.

Adobe Systems 4 Apr 1994 2




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