From 3b19d1d1ad88ba63ae821b2aedd4005466ed52fa Mon Sep 17 00:00:00 2001
From: Vincent Sanders <vince@kyllikki.org>
Date: Wed, 2 Jan 2013 16:55:45 +0000
Subject: Add epilogue output Add header guard generation

---
 src/jsapi-libdom.c  | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/jsapi-libdom.h  |  2 ++
 src/nsgenbind-ast.h |  2 ++
 3 files changed, 69 insertions(+)

diff --git a/src/jsapi-libdom.c b/src/jsapi-libdom.c
index 4fbe67b..39225ea 100644
--- a/src/jsapi-libdom.c
+++ b/src/jsapi-libdom.c
@@ -11,6 +11,7 @@
 #include <errno.h>
 #include <string.h>
 #include <stdlib.h>
+#include <ctype.h>
 
 #include "options.h"
 #include "nsgenbind-ast.h"
@@ -68,6 +69,15 @@ static int webidl_preamble_cb(struct genbind_node *node, void *ctx)
 	return 0;
 }
 
+static int webidl_epilogue_cb(struct genbind_node *node, void *ctx)
+{
+	struct binding *binding = ctx;
+
+	fprintf(binding->outfile, "%s", genbind_node_gettext(node));
+
+	return 0;
+}
+
 
 static int webidl_hdrcomments_cb(struct genbind_node *node, void *ctx)
 {
@@ -597,6 +607,42 @@ output_preamble(struct binding *binding)
 
 	fprintf(binding->outfile,"\n\n");
 
+	if (binding->hdrfile) {
+		binding->outfile = binding->hdrfile;
+
+		fprintf(binding->outfile,
+			"#ifndef _%s_\n"
+			"#define _%s_\n\n",
+			binding->hdrguard,
+			binding->hdrguard);
+
+		binding->outfile = binding->srcfile;
+	}
+
+
+	return 0;
+}
+
+static int
+output_epilogue(struct binding *binding)
+{
+	genbind_node_for_each_type(binding->gb_ast,
+				   GENBIND_NODE_TYPE_EPILOGUE,
+				   webidl_epilogue_cb,
+				   binding);
+
+	fprintf(binding->outfile,"\n\n");
+
+	if (binding->hdrfile) {
+		binding->outfile = binding->hdrfile;
+
+		fprintf(binding->outfile,
+			"\n\n#endif /* _%s_ */\n",
+			binding->hdrguard);
+
+		binding->outfile = binding->srcfile;
+	}
+
 	return 0;
 }
 
@@ -679,6 +725,7 @@ binding_new(char *outfilename,
 	struct genbind_node *interface_node;
 	FILE *outfile = NULL; /* output source file */
 	FILE *hdrfile = NULL; /* output header file */
+	char *hdrguard = NULL;
 	struct webidl_node *webidl_ast = NULL;
 	int res;
 
@@ -730,6 +777,9 @@ binding_new(char *outfilename,
 
 	/* output header file if required */
 	if (hdrfilename != NULL) {
+		int guardlen;
+		int pos;
+
 		hdrfile = fopen(hdrfilename, "w");
 		if (hdrfile == NULL) {			
 			fprintf(stderr, "Error opening header output %s: %s\n",
@@ -738,6 +788,15 @@ binding_new(char *outfilename,
 			fclose(outfile);
 			return NULL;
 		}
+		guardlen = strlen(hdrfilename);
+		hdrguard = calloc(1, guardlen + 1);
+		for (pos = 0; pos < guardlen; pos++) {
+			if (isalpha(hdrfilename[pos])) {
+				hdrguard[pos] = toupper(hdrfilename[pos]);
+			} else {
+				hdrguard[pos] = '_';
+			}
+		}
 	}
 
 	nb = calloc(1, sizeof(struct binding));
@@ -749,6 +808,7 @@ binding_new(char *outfilename,
 	nb->outfile = outfile;
 	nb->srcfile = outfile;
 	nb->hdrfile = hdrfile;
+	nb->hdrguard = hdrguard;
 	nb->has_private = binding_has_private(binding_list);
 	nb->has_global = binding_has_global(nb);
 	nb->binding_list = binding_list;
@@ -849,6 +909,11 @@ jsapi_libdom_output(char *outfilename,
 		return 150;
 	}
 
+	res = output_epilogue(binding);
+	if (res) {
+		return 160;
+	}
+
 	fclose(binding->outfile);
 
 	return 0;
diff --git a/src/jsapi-libdom.h b/src/jsapi-libdom.h
index bdc941d..a263efa 100644
--- a/src/jsapi-libdom.h
+++ b/src/jsapi-libdom.h
@@ -24,6 +24,8 @@ struct binding {
 	struct genbind_node *finalise; /* binding api finalise node or NULL */
 	struct genbind_node *mark; /* binding api mark node or NULL */
 
+	const char *hdrguard; /* header file guard name */
+
 	FILE *outfile ; /* file handle output should be written to,
 			 * allows reuse of callback routines to output
 			 * to headers and source files 
diff --git a/src/nsgenbind-ast.h b/src/nsgenbind-ast.h
index 6368519..4e2ffee 100644
--- a/src/nsgenbind-ast.h
+++ b/src/nsgenbind-ast.h
@@ -20,6 +20,8 @@ enum genbind_node_type {
 	GENBIND_NODE_TYPE_HDRCOMMENT,
 	GENBIND_NODE_TYPE_STRING,
 	GENBIND_NODE_TYPE_PREAMBLE,
+	GENBIND_NODE_TYPE_PROLOGUE,
+	GENBIND_NODE_TYPE_EPILOGUE,
 	GENBIND_NODE_TYPE_BINDING,
 	GENBIND_NODE_TYPE_BINDING_PRIVATE,
 	GENBIND_NODE_TYPE_BINDING_INTERNAL,
-- 
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