From 0db6518cbadf1b02df67477465a11bcffd007ed9 Mon Sep 17 00:00:00 2001
From: spo <sergey.pokhodenko@opencascade.com>
Date: Thu, 28 May 2015 15:24:24 +0300
Subject: [PATCH] Issue #529: 4.07. Import IGES, export to BREP, STEP, IGES -
 If file for export is inputed by hand then file format is from extension and
 for IGES files it is IGES-5.1 format.

---
 .../ExchangePlugin_ExportFeature.cpp          | 22 +++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/src/ExchangePlugin/ExchangePlugin_ExportFeature.cpp b/src/ExchangePlugin/ExchangePlugin_ExportFeature.cpp
index a67b57bcc..6d3fc8a84 100644
--- a/src/ExchangePlugin/ExchangePlugin_ExportFeature.cpp
+++ b/src/ExchangePlugin/ExchangePlugin_ExportFeature.cpp
@@ -77,8 +77,9 @@ void ExchangePlugin_ExportFeature::execute()
   AttributeStringPtr aFormatAttr =
       this->string(ExchangePlugin_ExportFeature::FILE_FORMAT_ID());
   std::string aFormat = aFormatAttr->value();
-  if (aFormat.empty())
-    return;
+  // Format may be empty. In this case look at extension.
+//  if (aFormat.empty())
+//    return;
 
   AttributeStringPtr aFilePathAttr =
       this->string(ExchangePlugin_ExportFeature::FILE_PATH_ID());
@@ -106,6 +107,23 @@ bool ExchangePlugin_ExportFeature::exportFile(const std::string& theFileName,
   TCollection_AsciiString aFileName(theFileName.c_str());
   TCollection_AsciiString aFormatName(theFormat.c_str());
 
+  if (theFormat.empty()) { // look at extension
+    OSD_Path aPath(aFileName);
+    TCollection_AsciiString anExtension = aPath.Extension();
+    // ".brep" -> "BREP", TCollection_AsciiString are numbered from 1
+    anExtension = anExtension.SubString(2, anExtension.Length());
+    anExtension.UpperCase();
+    if (anExtension == "BREP" || anExtension == "BRP") {
+      aFormatName = "BREP";
+    } else if (anExtension == "STEP" || anExtension == "STP") {
+      aFormatName = "STEP";
+    } else if (anExtension == "IGES" || anExtension == "IGS") {
+      aFormatName = "IGES-5.1";
+    } else {
+      aFormatName = anExtension;
+    }
+  }
+
   // Perform the export
   TCollection_AsciiString anError;
   TopoDS_Shape aShape(theShape->impl<TopoDS_Shape>());
-- 
2.39.2