These small utilities are for generating internal tables from

rcode encoding tables.

src/backend/utils/mb/alt.c

@@ -0,0 +1,66 @@
+/*
+ * make KOI8->CP866(ALT) and CP866(ALT)->KOI8 translation table
+ * from koi-alt.tab.
+ *
+ * Tatsuo Ishii
+ *
+ * $Id: alt.c,v 1.1 1999/03/24 07:01:36 ishii Exp $
+ */
+
+#include <stdio.h>
+main()
+{
+  int i;
+  char koitab[128],alttab[128];
+  char buf[4096];
+  int koi,alt;
+
+  for (i=0;i<128;i++) {
+    koitab[i] = alttab[i] = 0;
+  }
+
+  while (fgets(buf,sizeof(buf),stdin) != NULL) {
+    if (*buf == '#') {
+      continue;
+    }
+    sscanf(buf,"%d %d",&koi,&alt);
+    if (koi < 128 || koi > 255 || alt < 128 || alt > 255) {
+      fprintf(stderr,"invalid value %d\n",koi);
+      exit(1);
+    }
+    koitab[koi-128] = alt;
+    alttab[alt-128] = koi;
+  }
+
+  i = 0;
+  printf("static char koi2alt[] = {\n");
+  while (i < 128) {
+    int j = 0;
+    while (j < 8) {
+      printf("0x%02x",koitab[i++]);
+      j++;
+      if (i >= 128) {
+	break;
+      }
+      printf(", ");
+    }
+    printf("\n");
+  }
+  printf("};\n");
+
+  i = 0;
+  printf("static char alt2koi[] = {\n");
+  while (i < 128) {
+    int j = 0;
+    while (j < 8) {
+      printf("0x%02x",alttab[i++]);
+      j++;
+      if (i >= 128) {
+	break;
+      }
+      printf(", ");
+    }
+    printf("\n");
+  }
+  printf("};\n");
+}