Refactor charset plugins a bit and add CP437 module.

Now all 8-bit charsets with gaps (not all symbols defined) could be produced through
one macro -- SMB_GENERATE_CHARSET_MODULE_8_BIT_GAP(CHARSETNAME) within source file
with three charset tables. Full source code for such modules can be generated by
source/script/gen-8bit-gap.sh script which was taken from GNU libc and changed slightly
to follow our data types and structure.
(This used to be commit 37042c7bc0f349370e93e4bed37d8fa371013247)

1 files changed, 48 insertions, 0 deletions

diff --git a/source3/script/gaptab.awk b/source3/script/gaptab.awk
new file mode 100644
index 0000000000..f9d1526361
--- /dev/null
+++ b/source3/script/gaptab.awk
@@ -0,0 +1,48 @@
+BEGIN { hv["0"] =  0; hv["1"] =  1; hv["2"] =  2; hv["3"] =  3;
+	hv["4"] =  4; hv["5"] =  5; hv["6"] =  6; hv["7"] =  7;
+	hv["8"] =  8; hv["9"] =  9; hv["A"] = 10; hv["B"] = 11;
+	hv["C"] = 12; hv["D"] = 13; hv["E"] = 14; hv["F"] = 15;
+	hv["a"] = 10; hv["b"] = 11; hv["c"] = 12; hv["d"] = 13;
+	hv["e"] = 14; hv["f"] = 15;
+
+	first = 0; last = 0; idx = 0; f = 0;
+}
+
+function tonum(str)
+{
+  num=0;
+  cnt=1;
+  while (cnt <= length(str)) {
+    num *= 16;
+    num += hv[substr(str,cnt,1)];
+    ++cnt;
+  }
+  return num;
+}
+
+function fmt(val)
+{
+  if (f++ % 8 == 0)
+    { printf ("\n  '\\x%02x',", val); }
+  else
+    { printf (" '\\x%02x',", val); }
+}
+
+{
+  u = tonum($1); c = tonum($2);
+
+  if (u - last > 6)
+    {
+      if (last) { idx += last - first + 1; }
+      first = u;
+    }
+  else
+    {
+      for (m = last+1; m < u; m++) { fmt(0); }
+    }
+
+  fmt(c);
+  last = u;
+}
+
+END { print "" }