1 files changed, 90 insertions, 0 deletions
diff --git a/src/icont/newhdr.c b/src/icont/newhdr.c
new file mode 100644
index 0000000..7e23edb
--- /dev/null
+++ b/src/icont/newhdr.c
@@ -0,0 +1,90 @@
+/*
+ * Intermediate program to convert iconx.hdr into a header file for inclusion
+ * in icont.  This eliminates a compile-time file search on Unix systems.
+ * Definition of BinaryHeader activates the inclusion.
+ */
+
+#include "../h/gsupport.h"
+
+void putbyte(FILE *fout, int b);
+
+int main(int argc, char *argv[])
+   {
+   static const char Usage[] = "Usage %s [Filename]\n";
+   int b, n;
+   char *ifile = NULL;
+   char *ofile = NULL;
+   FILE *fin, *fout;
+
+   n = 1;
+   if (((n + 1) < argc) && !strcmp(argv[n], "-o")) {
+      ofile = argv[++n];
+      ++n;
+      }
+   if (n < argc)
+      ifile = argv[n++];
+
+   if (ifile == NULL)
+      fin = stdin;
+   else if ((fin = fopen(ifile, "rb")) == NULL) {
+      fprintf(stderr, "Cannot open \"%s\" for input\n\n", ifile);
+      fprintf(stderr, Usage, argv[0]);
+      return EXIT_FAILURE;
+      }
+
+   if (ofile == NULL)
+      fout = stdout;
+   else if ((fout = fopen(ofile, "w")) == NULL) {
+      fprintf(stderr, "Cannot open \"%s\" for output\n\n", ofile);
+      fprintf(stderr, Usage, argv[0]);
+      return EXIT_FAILURE;
+      }
+
+   /*
+    * Create an array large enough to hold iconx.hdr (+1 for luck)
+    * This array shall be included by link.c (and is nominally called
+    * hdr.h)
+    */ 
+   fprintf(fout, "static unsigned char iconxhdr[MaxHdr+1] = {\n");
+
+   /*
+    * Recreate iconx.hdr as a series of hex constants, padded with zero bytes.
+    */
+   for (n = 0; (b = getc(fin)) != EOF; n++)
+      putbyte(fout, b);
+
+   /*
+    * If header is to be used, make sure it fits.
+    */
+   #ifdef BinaryHeader
+      if (n > MaxHdr) {
+         fprintf(stderr, "%s: file size is %d bytes but MaxHdr is only %d\n",
+            argv[0], n, MaxHdr);
+         if (ofile != NULL) {
+            fclose(fout);
+            unlink(ofile);
+            }
+         return EXIT_FAILURE;
+         }
+   #endif				/* BinaryHeader */
+
+   while (n++ < MaxHdr)
+      putbyte(fout, 0);
+   fprintf(fout,"0x00};\n");	/* one more, sans comma, and finish */
+
+   return EXIT_SUCCESS;
+   }
+
+/*
+ * putbyte(b) - output byte b as two hex digits
+ */
+void putbyte(FILE *fout, int b)
+   {
+   static int n = 0;
+
+   fprintf(fout, "0x%02x,", b & 0xFF);
+   if (++n == 16) {
+      fprintf(fout, "\n");
+      n = 0;
+      }
+   }