From 29d53a0a460e00b3ec9dda508adbd2964077ab27 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor.andersson@artifex.com>
Date: Wed, 27 Apr 2016 17:00:29 +0200
Subject: Fix 696649: remove fz_rethrow_message calls.

---
 source/pdf/pdf-cmap-load.c | 57 ++++++++++++++++------------------------------
 1 file changed, 20 insertions(+), 37 deletions(-)

(limited to 'source/pdf/pdf-cmap-load.c')

diff --git a/source/pdf/pdf-cmap-load.c b/source/pdf/pdf-cmap-load.c
index 159c4e6f..525c0dc1 100644
--- a/source/pdf/pdf-cmap-load.c
+++ b/source/pdf/pdf-cmap-load.c
@@ -22,74 +22,57 @@ pdf_load_embedded_cmap(fz_context *ctx, pdf_document *doc, pdf_obj *stmobj)
 {
 	fz_stream *file = NULL;
 	pdf_cmap *cmap = NULL;
-	pdf_cmap *usecmap;
-	pdf_obj *wmode;
-	pdf_obj *obj = NULL;
-	int phase = 0;
+	pdf_cmap *usecmap = NULL;
+	pdf_obj *obj;
 
-	fz_var(phase);
-	fz_var(obj);
 	fz_var(file);
 	fz_var(cmap);
+	fz_var(usecmap);
 
 	if (pdf_obj_marked(ctx, stmobj))
 		fz_throw(ctx, FZ_ERROR_GENERIC, "Recursion in embedded cmap");
 
 	if ((cmap = pdf_find_item(ctx, pdf_drop_cmap_imp, stmobj)) != NULL)
-	{
 		return cmap;
-	}
 
 	fz_try(ctx)
 	{
 		file = pdf_open_stream(ctx, doc, pdf_to_num(ctx, stmobj), pdf_to_gen(ctx, stmobj));
-		phase = 1;
 		cmap = pdf_load_cmap(ctx, file);
-		phase = 2;
-		fz_drop_stream(ctx, file);
-		file = NULL;
 
-		wmode = pdf_dict_get(ctx, stmobj, PDF_NAME_WMode);
-		if (pdf_is_int(ctx, wmode))
-			pdf_set_cmap_wmode(ctx, cmap, pdf_to_int(ctx, wmode));
+		obj = pdf_dict_get(ctx, stmobj, PDF_NAME_WMode);
+		if (pdf_is_int(ctx, obj))
+			pdf_set_cmap_wmode(ctx, cmap, pdf_to_int(ctx, obj));
+
 		obj = pdf_dict_get(ctx, stmobj, PDF_NAME_UseCMap);
 		if (pdf_is_name(ctx, obj))
 		{
 			usecmap = pdf_load_system_cmap(ctx, pdf_to_name(ctx, obj));
 			pdf_set_usecmap(ctx, cmap, usecmap);
-			pdf_drop_cmap(ctx, usecmap);
 		}
 		else if (pdf_is_indirect(ctx, obj))
 		{
-			phase = 3;
 			pdf_mark_obj(ctx, obj);
-			usecmap = pdf_load_embedded_cmap(ctx, doc, obj);
-			pdf_unmark_obj(ctx, obj);
-			phase = 4;
+			fz_try(ctx)
+				usecmap = pdf_load_embedded_cmap(ctx, doc, obj);
+			fz_always(ctx)
+				pdf_unmark_obj(ctx, obj);
+			fz_catch(ctx)
+				fz_rethrow(ctx);
 			pdf_set_usecmap(ctx, cmap, usecmap);
-			pdf_drop_cmap(ctx, usecmap);
 		}
 
 		pdf_store_item(ctx, stmobj, cmap, pdf_cmap_size(ctx, cmap));
 	}
+	fz_always(ctx)
+	{
+		fz_drop_stream(ctx, file);
+		pdf_drop_cmap(ctx, usecmap);
+	}
 	fz_catch(ctx)
 	{
-		if (file)
-			fz_drop_stream(ctx, file);
-		if (cmap)
-			pdf_drop_cmap(ctx, cmap);
-		if (phase < 1)
-			fz_rethrow_message(ctx, "cannot open cmap stream (%d %d R)", pdf_to_num(ctx, stmobj), pdf_to_gen(ctx, stmobj));
-		else if (phase < 2)
-			fz_rethrow_message(ctx, "cannot parse cmap stream (%d %d R)", pdf_to_num(ctx, stmobj), pdf_to_gen(ctx, stmobj));
-		else if (phase < 3)
-			fz_rethrow_message(ctx, "cannot load system usecmap '%s'", pdf_to_name(ctx, obj));
-		else
-		{
-			if (phase == 3)
-				pdf_unmark_obj(ctx, obj);
-			fz_rethrow_message(ctx, "cannot load embedded usecmap (%d %d R)", pdf_to_num(ctx, obj), pdf_to_gen(ctx, obj));
-		}
+		pdf_drop_cmap(ctx, cmap);
+		fz_rethrow(ctx);
 	}
 
 	return cmap;
-- 
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