From e4e2c1232ff6980a54f3f3bf5a3395c21079f5ef Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Thu, 23 Apr 2015 22:32:58 -0400
Subject: [PATCH] Started readding the Windows backend. Still not too sure
 about uiOSContainer...

---
 new/windows/alloc.c | 49 ++++++++++++++++++++++++++++++++++++++
 new/windows/text.c  | 57 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 106 insertions(+)
 create mode 100644 new/windows/alloc.c
 create mode 100644 new/windows/text.c

diff --git a/new/windows/alloc.c b/new/windows/alloc.c
new file mode 100644
index 00000000..147c90d2
--- /dev/null
+++ b/new/windows/alloc.c
@@ -0,0 +1,49 @@
+// 4 december 2014
+#include "uipriv_windows.h"
+
+// wrappers for allocator of choice
+// panics on memory exhausted, undefined on heap corruption or other unreliably-detected malady (see http://stackoverflow.com/questions/28761680/is-there-a-windows-api-memory-allocator-deallocator-i-can-use-that-will-just-giv)
+// new memory is set to zero
+// passing NULL to tableRealloc() acts like tableAlloc()
+// passing NULL to tableFree() is a no-op
+
+void *uiAlloc(size_t size, const char *type)
+{
+	void *out;
+
+	out = malloc(size);
+	if (out == NULL) {
+		fprintf(stderr, "memory exhausted in uiAlloc() allocating %s\n", type);
+		abort();
+	}
+	ZeroMemory(out, size);
+	if (options.debugLogAllocations)
+		fprintf(stderr, "%p alloc %s\n", out, type);
+	return out;
+}
+
+void *uiRealloc(void *p, size_t size, const char *type)
+{
+	void *out;
+
+	if (p == NULL)
+		return uiAlloc(size, type);
+	out = realloc(p, size);
+	if (out == NULL) {
+		fprintf(stderr, "memory exhausted in uiRealloc() reallocating %s\n", type);
+		abort();
+	}
+	// TODO zero the extra memory
+	if (options.debugLogAllocations)
+		fprintf(stderr, "%p realloc %p\n", p, out);
+	return out;
+}
+
+void uiFree(void *p)
+{
+	if (p == NULL)
+		return;
+	free(p);
+	if (options.debugLogAllocations)
+		fprintf(stderr, "%p free\n", p);
+}
diff --git a/new/windows/text.c b/new/windows/text.c
new file mode 100644
index 00000000..9594b79c
--- /dev/null
+++ b/new/windows/text.c
@@ -0,0 +1,57 @@
+// 9 april 2015
+#include "uipriv_windows.h"
+
+// TODO figure out how to integreate HRESULT into this
+
+// see http://stackoverflow.com/a/29556509/3408572
+
+#define MBTWC(str, wstr, bufsiz) MultiByteToWideChar(CP_UTF8, 0, str, -1, wstr, bufsiz)
+
+WCHAR *toUTF16(const char *str)
+{
+	WCHAR *wstr;
+	int n;
+
+	n = MBTWC(str, NULL, 0);
+	if (n == 0)
+		logLastError("error figuring out number of characters to convert to in toUTF16()");
+	wstr = (WCHAR *) uiAlloc(n * sizeof (WCHAR), "WCHAR[]");
+	if (MBTWC(str, wstr, n) != n)
+		logLastError("error converting from UTF-8 to UTF-16 in toUTF16()");
+	return wstr;
+}
+
+#define WCTMB(wstr, str, bufsiz) WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, bufsiz, NULL, NULL)
+
+char *toUTF8(const WCHAR *wstr)
+{
+	char *str;
+	int n;
+
+	n = WCTMB(wstr, NULL, 0);
+	if (n == 0)
+		logLastError("error figuring out number of characters to convert to in toUTF8()");
+	str = (char *) uiAlloc(n * sizeof (char), "char[]");
+	if (WCTMB(wstr, str, n) != n)
+		logLastError("error converting from UTF-16 to UTF-8 in toUTFF8()");
+	return str;
+}
+
+WCHAR *windowText(HWND hwnd)
+{
+	LRESULT n;
+	WCHAR *text;
+
+	n = SendMessageW(hwnd, WM_GETTEXTLENGTH, 0, 0);
+	// WM_GETTEXTLENGTH does not include the null terminator
+	text = (WCHAR *) uiAlloc((n + 1) * sizeof (WCHAR), "WCHAR[]");
+	// note the comparison: the size includes the null terminator, but the return does not
+	if (GetWindowTextW(hwnd, text, n + 1) != n)
+		logLastError("error getting window text in windowText()");
+	return text;
+}
+
+void uiFreeText(char *text)
+{
+	uiFree(text);
+}