Split PostScript printing code (for Linux/Unix/etc.) into its own source file.

src/postscript_print.h

@@ -0,0 +1,53 @@
+/*
+  postscript_print.h
+
+*/
+
+#ifndef POSTSCRIPT_PRINT_H
+#define POSTSCRIPT_PRINT_H
+
+#include <stdio.h>
+#include "SDL.h"
+
+
+/* Method for printing images: */
+
+#define PRINTMETHOD_PS          /* Direct to PostScript */
+//#define PRINTMETHOD_PNM_PS       /* Output PNM, assuming it gets printed */
+//#define PRINTMETHOD_PNG_PNM_PS   /* Output PNG, assuming it gets printed */
+
+
+
+/* Default print and alt-print command, depending on the print method: */
+
+#define DEFAULT_PRINTCOMMAND "lpr"
+#define DEFAULT_ALTPRINTCOMMAND "kprinter"
+
+#ifdef PRINTMETHOD_PNG_PNM_PS
+#define PRINTCOMMAND "pngtopnm | pnmtops | " DEFAULT_PRINTCOMMAND
+#elif defined(PRINTMETHOD_PNM_PS)
+#define PRINTCOMMAND "pnmtops | " DEFAULT_PRINTCOMMAND
+#elif defined(PRINTMETHOD_PS)
+#define PRINTCOMMAND DEFAULT_PRINTCOMMAND
+#else
+#error No print method defined!
+#endif
+
+#ifdef PRINTMETHOD_PNG_PNM_PS
+#define ALTPRINTCOMMAND "pngtopnm | pnmtops | " DEFAULT_ALTPRINTCOMMAND
+#elif defined(PRINTMETHOD_PNM_PS)
+#define ALTPRINTCOMMAND "pnmtops | " DEFAULT_ALTPRINTCOMMAND
+#elif defined(PRINTMETHOD_PS)
+#define ALTPRINTCOMMAND DEFAULT_ALTPRINTCOMMAND
+#else
+#error No alt print method defined!
+#endif
+
+
+int do_ps_save(FILE * fi,
+		      // const char *restrict const fname,
+		      const char *fname,
+                      SDL_Surface * surf);
+
+#endif /* POSTSCRIPT_PRINT_H */
+