From 3fc0dcc8167b2a306ba9a5146dade7b7b2387f63 Mon Sep 17 00:00:00 2001
From: Dan Nicholson <dbn.lists@gmail.com>
Date: Sun, 29 Mar 2009 08:55:18 -0700
Subject: [PATCH] Generate keyboard description from components

Finally, we can generate a XkbcDescPtr from a XkbComponentNamesPtr. This
involves turning the components into a parsed XKB file and then passing
it into the compiler. This first conversion needs more error handling.
---
 include/X11/extensions/XKBcommon.h |   3 ++
 src/xkbcomp/Makefile.am            |   1 +
 src/xkbcomp/xkbcomp.c              | 105 +++++++++++++++++++++++++++++++++++++
 3 files changed, 109 insertions(+)
 create mode 100644 src/xkbcomp/xkbcomp.c

diff --git a/include/X11/extensions/XKBcommon.h b/include/X11/extensions/XKBcommon.h
index 28ea338..f751be6 100644
--- a/include/X11/extensions/XKBcommon.h
+++ b/include/X11/extensions/XKBcommon.h
@@ -64,6 +64,9 @@ typedef struct _XkbcDesc {
 
 _XFUNCPROTOBEGIN
 
+extern XkbcDescPtr
+XkbcCompileKeymap(XkbComponentNamesPtr ktcsg);
+
 extern char *
 XkbcKeysymToString(KeySym ks);
 
diff --git a/src/xkbcomp/Makefile.am b/src/xkbcomp/Makefile.am
index 534cc09..b934a88 100644
--- a/src/xkbcomp/Makefile.am
+++ b/src/xkbcomp/Makefile.am
@@ -32,6 +32,7 @@ libxkbcomp_la_SOURCES = \
 	utils.h \
 	vmod.c \
 	vmod.h \
+	xkbcomp.c \
 	xkbcomp.h \
 	xkbparse.y \
 	xkbpath.c \
diff --git a/src/xkbcomp/xkbcomp.c b/src/xkbcomp/xkbcomp.c
new file mode 100644
index 0000000..e8c2fb8
--- /dev/null
+++ b/src/xkbcomp/xkbcomp.c
@@ -0,0 +1,105 @@
+/*
+Copyright 2009  Dan Nicholson
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the names of the authors or their
+institutions shall not be used in advertising or otherwise to promote the
+sale, use or other dealings in this Software without prior written
+authorization from the authors.
+*/
+
+#include "X11/extensions/XKBcommon.h"
+#include <X11/extensions/XKM.h>
+#include "xkbcomp.h"
+#include "parseutils.h"
+#include "utils.h"
+
+static int
+XkbFileFromComponents(const XkbComponentNamesPtr ktcsg, XkbFile **file)
+{
+    XkbFile *keycodes, *types, *compat, *symbols, *geometry;
+    IncludeStmt *inc;
+
+    inc = IncludeCreate(ktcsg->keycodes, MergeDefault);
+    keycodes = CreateXKBFile(XkmKeyNamesIndex, NULL, (ParseCommon *)inc, 0);
+
+    inc = IncludeCreate(ktcsg->types, MergeDefault);
+    types = CreateXKBFile(XkmTypesIndex, NULL, (ParseCommon *)inc, 0);
+    AppendStmt(&keycodes->common, &types->common);
+
+    inc = IncludeCreate(ktcsg->compat, MergeDefault);
+    compat = CreateXKBFile(XkmCompatMapIndex, NULL, (ParseCommon *)inc, 0);
+    AppendStmt(&keycodes->common, &compat->common);
+
+    inc = IncludeCreate(ktcsg->symbols, MergeDefault);
+    symbols = CreateXKBFile(XkmSymbolsIndex, NULL, (ParseCommon *)inc, 0);
+    AppendStmt(&keycodes->common, &symbols->common);
+
+    inc = IncludeCreate(ktcsg->geometry, MergeDefault);
+    geometry = CreateXKBFile(XkmGeometryIndex, NULL, (ParseCommon *)inc, 0);
+    AppendStmt(&keycodes->common, &geometry->common);
+
+    *file = CreateXKBFile(XkmKeymapFile, ktcsg->keymap, &keycodes->common, 0);
+
+    return 1;
+}
+
+XkbcDescPtr
+XkbcCompileKeymap(XkbComponentNamesPtr ktcsg)
+{
+    XkbFile *file, *mapToUse;
+    XkbcDescPtr xkb;
+
+    if (!XkbFileFromComponents(ktcsg, &file)) {
+        ERROR("failed to generate parsed XKB file from components");
+        goto fail;
+    }
+
+    /* Find map to use */
+    mapToUse = file;
+    if (file->common.next) {
+        for (; mapToUse; mapToUse = (XkbFile *)mapToUse->common.next) {
+            if (mapToUse->flags & XkbLC_Default)
+                break;
+        }
+        if (!mapToUse) {
+            mapToUse = file;
+            WARN("no map specified, but components have several");
+        }
+    }
+
+    /* Compile the keyboard */
+    if (!(xkb = XkbcAllocKeyboard())) {
+        ERROR("Could not allocate keyboard description");
+        goto unwind_file;
+    }
+
+    if (!CompileKeymap(mapToUse, xkb, MergeReplace)) {
+        ERROR("Failed to compile keymap");
+        goto unwind_xkb;
+    }
+
+    return xkb;
+unwind_xkb:
+    XkbcFreeKeyboard(xkb, XkbAllComponentsMask, True);
+unwind_file:
+    /* XXX: here's where we would free the XkbFile */
+fail:
+    return NULL;
+}
-- 
2.7.4