Make the PostScript prologue look less like it was written by a C programmer.

In particular, use the operand stack to hold "x" and "y", and use a dictionary
lookup to switch based on the type of "x".  This also seems to give a slight
speed increase.

git-svn-id: svn://svn.tartarus.org/sgt/halibut@4553 cda61777-01e9-0310-a592-d414129be87e

diff --git a/bk_ps.c b/bk_ps.c
index d64bc6a..5750ec0 100644 (file)
--- a/bk_ps.c
+++ b/bk_ps.c
@@ -74,15 +74,13 @@ void ps_backend(paragraph *sourceform, keywordlist *keywords,
      *  - a string is shown
      */
     fprintf(fp,
-           "/t {\n"
-           "  exch /y exch def {\n"
-           "    /x exch def\n"
-           "    x type /arraytype eq {x aload pop scalefont setfont} if\n"
-           "    x type dup /integertype eq exch /realtype eq or "
-                                                       "{x y moveto} if\n"
-           "    x type /stringtype eq {x show} if\n"
-           "  } forall\n"
-           "} bind def\n");
+           "/tdict 4 dict dup begin\n"
+           "  /arraytype {aload pop scalefont setfont} bind def\n"
+           "  /realtype {1 index moveto} bind def\n"
+           "  /integertype /realtype load def\n"
+           "  /stringtype {show} bind def\n"
+           "end def\n"
+           "/t { tdict begin {dup type exec} forall end } bind def\n");
 
     fprintf(fp, "%%%%EndResource\n");
     fprintf(fp, "%%%%EndProlog\n");