1 files changed, 111 insertions, 0 deletions
diff --git a/zap/source/amd64/mem/win1252dec.c b/zap/source/amd64/mem/win1252dec.c
new file mode 100644
index 0000000..2a5e897
--- /dev/null
+++ b/zap/source/amd64/mem/win1252dec.c
@@ -0,0 +1,111 @@
+/*
+	Copyright 2022 Gabriel Jensen.
+	This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
+	If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
+*/
+
+#include <zap/priv.h>
+
+#include <zap/mem.h>
+
+void zap_win1252dec(zap_chr8 const * const _in,zap_chr20 * const _out) {
+	zap_chr8 const * in  = _in;
+	zap_chr20 *      out = _out;
+	for (;;++in,++out) {
+		zap_chr8 const chr = *in;
+		switch (chr) {
+		default:
+			*out = *in;
+			break;
+		case 0x81: /* Bad characters. */
+		case 0x8D:
+		case 0x8F:
+		case 0x90:
+		case 0x9D:
+			*out = 0xFFFDu; /* REPLACEMENT CHARACTER */
+			break;
+		case 0x80:
+			*out = 0x20ACu;
+			break;
+		case 0x82:
+			*out = 0x201Au;
+			break;
+		case 0x83:
+			*out = 0x192u;
+			break;
+		case 0x84:
+			*out = 0x201Eu;
+			break;
+		case 0x85:
+			*out = 0x2026u;
+			break;
+		case 0x86:
+			*out = 0x2020u;
+			break;
+		case 0x87:
+			*out = 0x2021u;
+			break;
+		case 0x88:
+			*out = 0x2C6u;
+			break;
+		case 0x89:
+			*out = 0x2030u;
+			break;
+		case 0x8A:
+			*out = 0x160u;
+			break;
+		case 0x8B:
+			*out = 0x2039u;
+			break;
+		case 0x8C:
+			*out = 0x152u;
+			break;
+		case 0x8E:
+			*out = 0x17Du;
+			break;
+		case 0x91:
+			*out = 0x2018u;
+			break;
+		case 0x92:
+			*out = 0x2019u;
+			break;
+		case 0x93:
+			*out = 0x201Cu;
+			break;
+		case 0x94:
+			*out = 0x201Du;
+			break;
+		case 0x95:
+			*out = 0x2022u;
+			break;
+		case 0x96:
+			*out = 0x2013u;
+			break;
+		case 0x97:
+			*out = 0x2014u;
+			break;
+		case 0x98:
+			*out = 0x2DCu;
+			break;
+		case 0x99:
+			*out = 0x2122u;
+			break;
+		case 0x9A:
+			*out = 0x161u;
+			break;
+		case 0x9B:
+			*out = 0x203Au;
+			break;
+		case 0x9C:
+			*out = 0x153u;
+			break;
+		case 0x9E:
+			*out = 0x17Eu;
+			break;
+		case 0x9F:
+			*out = 0x178u;
+			break;
+		}
+		if (chr == 0x0u) {break;}
+	}
+}