Add "Extensions" section support to configuration parser

6 files changed, 172 insertions, 2 deletions

diff --git a/hw/xfree86/common/xf86Config.c b/hw/xfree86/common/xf86Config.c
index fd5de965a..cf3ea927b 100644
--- a/hw/xfree86/common/xf86Config.c
+++ b/hw/xfree86/common/xf86Config.c
@@ -1,4 +1,4 @@
-/* $XdotOrg$ */
+/* $XdotOrg: xc/programs/Xserver/hw/xfree86/common/xf86Config.c,v 1.2 2004/04/23 19:20:32 eich Exp $ */
 /* $XFree86: xc/programs/Xserver/hw/xfree86/common/xf86Config.c,v 3.276 2003/10/08 14:58:26 dawes Exp $ */
 
 
@@ -128,6 +128,7 @@ static Bool addDefaultModes(MonPtr monitorp);
 #ifdef XF86DRI
 static Bool configDRI(XF86ConfDRIPtr drip);
 #endif
+static Bool configExtensions(XF86ConfExtensionsPtr conf_ext);
 
 /*
  * xf86GetPathElem --
@@ -2396,6 +2397,46 @@ configDRI(XF86ConfDRIPtr drip)
 #endif
 
 static Bool
+configExtensions(XF86ConfExtensionsPtr conf_ext)
+{
+    XF86OptionPtr o;
+
+    /* Extension enable/disable in miinitext.c */
+    extern Bool EnableDisableExtension(char *name, Bool enable);
+
+    if (conf_ext && conf_ext->ext_option_lst) {
+	for (o = conf_ext->ext_option_lst; o; o = xf86NextOption(o)) {
+	    char *name = xf86OptionName(o);
+	    char *val  = xf86OptionValue(o);
+	    if (xf86NameCmp(val, "enable") == 0) {
+		if (EnableDisableExtension(name, TRUE)) {
+		    xf86Msg(X_CONFIG, "Extension \"%s\" is enabled\n", name);
+		} else {
+		    xf86Msg(X_ERROR,
+			    "Extension \"%s\" is unrecognized\n", name);
+		    return FALSE;
+		}
+	    } else if (xf86NameCmp(val, "disable") == 0) {
+		if (EnableDisableExtension(name, FALSE)) {
+		    xf86Msg(X_CONFIG, "Extension \"%s\" is disabled\n", name);
+		} else {
+		    xf86Msg(X_ERROR,
+			    "Extension \"%s\" is unrecognized\n", name);
+		    return FALSE;
+		}
+	    } else {
+		xf86Msg(X_ERROR,
+			"%s is not a valid value for the Extension option\n",
+			val);
+		return FALSE;
+	    }
+	}
+    }
+
+    return TRUE;
+}
+
+static Bool
 configInput(IDevPtr inputp, XF86ConfInputPtr conf_input, MessageType from)
 {
     xf86Msg(from, "|-->Input Device \"%s\"\n", conf_input->inp_identifier);
@@ -2551,7 +2592,8 @@ xf86HandleConfigFile(Bool autoconfig)
 
     if (!configFiles(xf86configptr->conf_files) ||
         !configServerFlags(xf86configptr->conf_flags,
-			   xf86ConfigLayout.options)
+			   xf86ConfigLayout.options) ||
+	!configExtensions(xf86configptr->conf_extensions)
 #ifdef XF86DRI
 	|| !configDRI(xf86configptr->conf_dri)
 #endif
diff --git a/hw/xfree86/parser/Extensions.c b/hw/xfree86/parser/Extensions.c
new file mode 100644
index 000000000..0c51a6e33
--- /dev/null
+++ b/hw/xfree86/parser/Extensions.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2004 Red Hat Inc., Raleigh, North Carolina.
+ *
+ * All Rights Reserved.
+ *
+ * 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 on 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 (including the
+ * next paragraph) 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
+ * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
+ * 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.
+ */
+
+/*
+ * Authors:
+ *   Kevin E. Martin <kem@redhat.com>
+ *
+ */
+
+#include "xf86Parser.h"
+#include "xf86tokens.h"
+#include "Configint.h"
+
+extern LexRec val;
+
+static xf86ConfigSymTabRec ExtensionsTab[] =
+{
+    {ENDSECTION, "endsection"},
+    {OPTION,     "option"},
+    {-1,         ""},
+};
+
+#define CLEANUP xf86freeExtensions
+
+XF86ConfExtensionsPtr
+xf86parseExtensionsSection (void)
+{
+    int token;
+    parsePrologue (XF86ConfExtensionsPtr, XF86ConfExtensionsRec);
+
+    while ((token = xf86getToken (ExtensionsTab)) != ENDSECTION) {
+	switch (token) {
+	    case OPTION:
+		ptr->ext_option_lst = xf86parseOption(ptr->ext_option_lst);
+		break;
+	    case EOF_TOKEN:
+		Error (UNEXPECTED_EOF_MSG, NULL);
+		break;
+	    case COMMENT:
+		ptr->extensions_comment =
+		    xf86addComment(ptr->extensions_comment, val.str);
+		break;
+	    default:
+		Error (INVALID_KEYWORD_MSG, xf86tokenString ());
+		break;
+	}
+    }
+
+#ifdef DEBUG
+    ErrorF("Extensions section parsed\n");
+#endif
+
+    return ptr;
+}
+
+#undef CLEANUP
+
+void
+xf86printExtensionsSection (FILE * cf, XF86ConfExtensionsPtr ptr)
+{
+    XF86OptionPtr p;
+
+    if (ptr == NULL || ptr->ext_option_lst == NULL)
+	return;
+
+    p = ptr->ext_option_lst;
+    fprintf (cf, "Section \"Extensions\"\n");
+    if (ptr->extensions_comment)
+	fprintf (cf, "%s", ptr->extensions_comment);
+    xf86printOptionList(cf, p, 1);
+    fprintf (cf, "EndSection\n\n");
+}
+
+void
+xf86freeExtensions (XF86ConfExtensionsPtr ptr)
+{
+    if (ptr == NULL)
+	return;
+
+    xf86optionListFree (ptr->ext_option_lst);
+    TestFree (ptr->extensions_comment);
+    xf86conffree (ptr);
+}
diff --git a/hw/xfree86/parser/configProcs.h b/hw/xfree86/parser/configProcs.h
index 522cf5c2f..cc694666f 100644
--- a/hw/xfree86/parser/configProcs.h
+++ b/hw/xfree86/parser/configProcs.h
@@ -116,6 +116,10 @@ void xf86freeBuffersList (XF86ConfBuffersPtr ptr);
 XF86ConfDRIPtr xf86parseDRISection (void);
 void xf86printDRISection (FILE * cf, XF86ConfDRIPtr ptr);
 void xf86freeDRI (XF86ConfDRIPtr ptr);
+/* Extensions.c */
+XF86ConfExtensionsPtr xf86parseExtensionsSection (void);
+void xf86printExtensionsSection (FILE * cf, XF86ConfExtensionsPtr ptr);
+void xf86freeExtensions (XF86ConfExtensionsPtr ptr);
 
 #ifndef IN_XSERVER
 /* Externally provided functions */
diff --git a/hw/xfree86/parser/read.c b/hw/xfree86/parser/read.c
index 2a5afeb27..2946dc8b1 100644
--- a/hw/xfree86/parser/read.c
+++ b/hw/xfree86/parser/read.c
@@ -191,6 +191,12 @@ xf86readConfigFile (void)
 				val.str = NULL;
 				HANDLE_RETURN (conf_dri, xf86parseDRISection ());
 			}
+			else if (xf86nameCompare (val.str, "extensions") == 0)
+			{
+				xf86conffree(val.str);
+				val.str = NULL;
+				HANDLE_RETURN (conf_extensions, xf86parseExtensionsSection ());
+			}
 			else
 			{
 				Error (INVALID_SECTION_MSG, xf86tokenString ());
@@ -304,6 +310,7 @@ xf86freeConfig (XF86ConfigPtr p)
 	xf86freeInputList (p->conf_input_lst);
 	xf86freeVendorList (p->conf_vendor_lst);
 	xf86freeDRI (p->conf_dri);
+	xf86freeExtensions (p->conf_extensions);
 	TestFree(p->conf_comment);
 
 	xf86conffree (p);
diff --git a/hw/xfree86/parser/write.c b/hw/xfree86/parser/write.c
index e096c6247..499b6a11e 100644
--- a/hw/xfree86/parser/write.c
+++ b/hw/xfree86/parser/write.c
@@ -130,6 +130,8 @@ doWriteConfigFile (const char *filename, XF86ConfigPtr cptr)
 
 	xf86printDRISection (cf, cptr->conf_dri);
 
+	xf86printExtensionsSection (cf, cptr->conf_extensions);
+
 	fclose(cf);
 	return 1;
 }
diff --git a/hw/xfree86/parser/xf86Parser.h b/hw/xfree86/parser/xf86Parser.h
index 1a30d17a8..b6a974d3c 100644
--- a/hw/xfree86/parser/xf86Parser.h
+++ b/hw/xfree86/parser/xf86Parser.h
@@ -416,6 +416,13 @@ XF86ConfDRIRec, *XF86ConfDRIPtr;
 
 typedef struct
 {
+	XF86OptionPtr ext_option_lst;
+	char *extensions_comment;
+}
+XF86ConfExtensionsRec, *XF86ConfExtensionsPtr;
+
+typedef struct
+{
 	XF86ConfFilesPtr conf_files;
 	XF86ConfModulePtr conf_modules;
 	XF86ConfFlagsPtr conf_flags;
@@ -428,6 +435,7 @@ typedef struct
 	XF86ConfLayoutPtr conf_layout_lst;
 	XF86ConfVendorPtr conf_vendor_lst;
 	XF86ConfDRIPtr conf_dri;
+	XF86ConfExtensionsPtr conf_extensions;
 	char *conf_comment;
 }
 XF86ConfigRec, *XF86ConfigPtr;