-move app-specific stuff out of lib/ and into "hooks". see new lib/app_hooks* (note X macro goodness)

-move tex_codec stuff out of tex.cpp and into tex_codec.cpp
-tex_codec: use linked list of codecs instead of array (simplifies code
and removes limit)
-ogl_tex: add override mechanism for s3tc/automipmapgen extension detect
-tired of keeping of debug_warn text in sync with function name; now use
__func__ everywhere (and emulate that with __FUNCTION__ on MSC)
-add ONCE_NOT (opposite of ONCE)
-fix 3!! stupid bugs in ia32_control87, its caller and the header that
were canceling each other out. float exceptions now enabled except for
"inexact result" (too common). (update: nicolai had already fixed 2 of
these)

This was SVN commit r2964.

source/lib/app_hooks.cpp

@@ -0,0 +1,163 @@
+// Hooks to allow application-specific behavior
+// Copyright (c) 2005 Jan Wassenberg
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// Contact info:
+//   Jan.Wassenberg@stud.uni-karlsruhe.de
+//   http://www.stud.uni-karlsruhe.de/~urkt/
+
+#include "precompiled.h"
+
+#include <string.h>
+#include <stdio.h>
+
+#include "detect.h"
+#include "res/graphics/ogl_tex.h"
+#include "res/file/file.h"
+
+#include "app_hooks.h"
+
+
+//-----------------------------------------------------------------------------
+// default implementations
+//-----------------------------------------------------------------------------
+
+static void override_gl_upload_caps()
+{
+	if(gfx_card[0] == '\0')
+		debug_warn("get_gfx_info must be called before ogl_tex_upload");
+
+	if(!strcmp(gfx_card, "S3 SuperSavage/IXC 1014"))
+	{
+		if(strstr(gfx_drv_ver, "ssicdnt.dll (2.60.115)"))
+			ogl_tex_override(OGL_TEX_S3TC, OGL_TEX_DISABLE);
+	}
+}
+
+
+// convert contents of file <in_filename> from char to wchar_t and
+// append to <out> file.
+static void cat_atow(FILE* out, const char* in_filename)
+{
+	FILE* in = fopen(in_filename, "rb");
+	if(!in)
+	{
+		fwprintf(out, L"(unavailable)");
+		return;
+	}
+
+	const size_t buf_size = 1024;
+	char buf[buf_size+1]; // include space for trailing '\0'
+
+	while(!feof(in))
+	{
+		size_t bytes_read = fread(buf, 1, buf_size, in);
+		if(!bytes_read)
+			break;
+		buf[bytes_read] = 0;	// 0-terminate
+		fwprintf(out, L"%hs", buf);
+	}
+
+	fclose(in);
+}
+
+static void bundle_logs(FILE* f)
+{
+	// for user convenience, bundle all logs into this file:
+	char N_path[PATH_MAX];
+
+	fwprintf(f, L"System info:\n\n");
+	(void)file_make_full_native_path("../logs/system_info.txt", N_path);
+	cat_atow(f, N_path);
+	fwprintf(f, L"\n\n====================================\n\n");
+
+	fwprintf(f, L"Main log:\n\n");
+	(void)file_make_full_native_path("../logs/mainlog.html", N_path);
+	cat_atow(f, N_path);
+	fwprintf(f, L"\n\n====================================\n\n");
+}
+
+
+// TODO: leaks memory returned by wcsdup
+static const wchar_t* translate(const wchar_t* text)
+{
+#if HAVE_I18N
+	// make sure i18n system is (already|still) initialized.
+	if(g_CurrentLocale)
+	{
+		// be prepared for this to fail, because translation potentially
+		// involves script code and the JS context might be corrupted.
+#if OS_WIN
+		__try
+#endif
+		{
+			const wchar_t* text2 = wcsdup(I18n::translate(text).c_str());
+			// only overwrite if wcsdup succeeded, i.e. not out of memory.
+			if(text2)
+				text = text2;
+		}
+#if OS_WIN
+		__except(EXCEPTION_EXECUTE_HANDLER)
+#endif
+		{
+		}
+	}
+#endif
+
+	return text;
+}
+
+
+static void log(const wchar_t* text)
+{
+	wprintf(text);
+}
+
+
+//-----------------------------------------------------------------------------
+
+// contains the current set of hooks. starts with the stub values and
+// may be changed via set_app_hooks.
+//
+// rationale: we don't ever need to switch "hook sets", so one global struct
+// is fine. by always having one defined, we also avoid having to check
+// if anything was registered yet.
+static AppHooks ah =
+{
+#define FUNC(ret, name, params, param_names, call_prefix) name,
+#include "app_hooks.h"
+#undef FUNC
+
+	// int dummy; used to terminate list, since last entry ended with ','.
+	0
+};
+
+// register the specified hook function pointers. any of them that
+// are non-zero override the previous function pointer value
+// (these default to the stub hooks which are functional but basic).
+void set_app_hooks(AppHooks* ah_)
+{
+	debug_assert(ah_);
+	ONCE_NOT(debug_warn(__func__": app hooks already set"));
+
+	// override members in <ah> if they are non-zero in <ah_>
+	// (otherwise, we stick with the defaults set above)
+#define FUNC(ret, name, params, param_names, call_prefix) if(ah_->name) ah.name = ah_->name;
+#include "app_hooks.h"
+#undef FUNC
+}
+
+// trampolines used by lib code; they call the hooks or fall back to the
+// default implementation if not set.
+#define FUNC(ret, name, params, param_names, call_prefix) inline ret ah_##name params { call_prefix ah.name param_names; }
+#include "app_hooks.h"
+#undef FUNC