added dev/MinGfx/

1 files changed, 78 insertions, 0 deletions

diff --git a/dev/MinGfx/src/platform.cc b/dev/MinGfx/src/platform.cc
new file mode 100644
index 0000000..5d941b6
--- /dev/null
+++ b/dev/MinGfx/src/platform.cc
@@ -0,0 +1,78 @@
+/*
+ Copyright (c) 2017,2018 Regents of the University of Minnesota.
+ All Rights Reserved.
+ See corresponding header file for details.
+ */
+
+#include "platform.h"
+
+#include "mingfx_config.h"
+
+#include <vector>
+#include <sstream>
+
+#ifdef WIN32
+    #include <windows.h>
+#else
+    #include <sys/stat.h>
+#endif
+
+
+namespace mingfx {
+    
+bool Platform::FileExists(const std::string &filename) {
+#ifdef WIN32
+	LPCTSTR  szPath = (LPCTSTR)filename.c_str();
+	DWORD dwAttrib = GetFileAttributes(szPath);
+	return (dwAttrib != INVALID_FILE_ATTRIBUTES &&
+		!(dwAttrib & FILE_ATTRIBUTE_DIRECTORY));
+#else
+    struct stat buf;
+    return (stat(filename.c_str(), &buf) == 0);
+#endif
+}
+    
+
+std::string Platform::FindFile(const std::string &basename, const std::vector<std::string> &searchpath) {
+    for (int i=0; i<searchpath.size(); i++) {
+        std::string fname = searchpath[i] + "/" + basename;
+        if (Platform::FileExists(fname)) {
+            return fname;
+        }
+    }
+    return basename;
+}
+
+std::string Platform::FindFile(const std::string &basename, const std::string &searchpath) {
+    std::vector<std::string> paths;
+    std::stringstream ss(searchpath);
+    std::string path;
+    while (ss >> path) {
+        paths.push_back(path);
+        if (ss.peek() == ';')
+            ss.ignore();
+    }
+    return FindFile(basename, paths);
+}
+
+
+std::string Platform::FindMinGfxDataFile(const std::string &basename) {
+    std::vector<std::string> searchpath;
+    searchpath.push_back(".");
+    searchpath.push_back("data");
+    searchpath.push_back(MINGFX_DATA_DIR_INSTALL);
+    searchpath.push_back(MINGFX_DATA_DIR_BUILD);
+    return FindFile(basename, searchpath);
+}
+
+std::string Platform::FindMinGfxShaderFile(const std::string &basename) {
+    std::vector<std::string> searchpath;
+    searchpath.push_back(".");
+    searchpath.push_back("shaders");
+    searchpath.push_back(MINGFX_SHADERS_DIR_INSTALL);
+    searchpath.push_back(MINGFX_SHADERS_DIR_BUILD);
+    return FindFile(basename, searchpath);
+}
+
+
+} // end namespace