From efe79db062a99273c39acd4b7a1429a75417e35c Mon Sep 17 00:00:00 2001
From: Matt Hill <matthill@gmail.com>
Date: Mon, 19 May 2014 22:51:15 -0500
Subject: [PATCH] Case insensitive file match for alpr (matches .jpg and .JPEG)

---
 src/main.cpp                        |  9 +++++----
 src/openalpr/support/filesystem.cpp | 13 +++++++++++++
 src/openalpr/support/filesystem.h   |  2 ++
 3 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/src/main.cpp b/src/main.cpp
index e6c9ff3..bfee3e3 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -197,8 +197,8 @@ int main( int argc, const char** argv )
     
     std::cout << "Video processing ended" << std::endl;
   }
-  else if (hasEnding(filename, ".avi") || hasEnding(filename, ".mp4") || hasEnding(filename, ".webm") || 
-	   hasEnding(filename, ".flv") || hasEnding(filename, ".mjpg") || hasEnding(filename, ".mjpeg"))
+  else if (hasEndingInsensitive(filename, ".avi") || hasEndingInsensitive(filename, ".mp4") || hasEndingInsensitive(filename, ".webm") || 
+	   hasEndingInsensitive(filename, ".flv") || hasEndingInsensitive(filename, ".mjpg") || hasEndingInsensitive(filename, ".mjpeg"))
   {
     if (fileExists(filename.c_str()))
     {
@@ -227,7 +227,8 @@ int main( int argc, const char** argv )
       std::cerr << "Video file not found: " << filename << std::endl;
     }
   }
-  else if (hasEnding(filename, ".png") || hasEnding(filename, ".jpg") || hasEnding(filename, ".gif"))
+  else if (hasEndingInsensitive(filename, ".png") || hasEndingInsensitive(filename, ".jpg") || 
+	   hasEndingInsensitive(filename, ".jpeg") || hasEndingInsensitive(filename, ".gif"))
   {
     if (fileExists(filename.c_str()))
     {
@@ -248,7 +249,7 @@ int main( int argc, const char** argv )
 
     for (int i = 0; i< files.size(); i++)
     {
-      if (hasEnding(files[i], ".jpg") || hasEnding(files[i], ".png"))
+      if (hasEndingInsensitive(files[i], ".jpg") || hasEndingInsensitive(files[i], ".png"))
       {
         std::string fullpath = filename + "/" + files[i];
         std::cout << fullpath << std::endl;
diff --git a/src/openalpr/support/filesystem.cpp b/src/openalpr/support/filesystem.cpp
index 957750b..7e8d66e 100644
--- a/src/openalpr/support/filesystem.cpp
+++ b/src/openalpr/support/filesystem.cpp
@@ -21,6 +21,19 @@ bool hasEnding (std::string const &fullString, std::string const &ending)
   }
 }
 
+bool hasEndingInsensitive(const std::string& fullString, const std::string& ending)
+{
+  if (fullString.length() < ending.length())
+    return false;
+  
+  int startidx = fullString.length() - ending.length();
+  
+  for (unsigned int i = startidx; i < fullString.length(); ++i)
+      if (tolower(fullString[i]) != tolower(ending[i - startidx]))
+	  return false;
+  return true;
+}
+
 bool DirectoryExists( const char* pzPath )
 {
   if ( pzPath == NULL) return false;
diff --git a/src/openalpr/support/filesystem.h b/src/openalpr/support/filesystem.h
index e0d1372..45d22d3 100644
--- a/src/openalpr/support/filesystem.h
+++ b/src/openalpr/support/filesystem.h
@@ -19,6 +19,8 @@
 
 bool startsWith(std::string const &fullString, std::string const &prefix);
 bool hasEnding (std::string const &fullString, std::string const &ending);
+bool hasEndingInsensitive(const std::string& fullString, const std::string& ending);
+
 bool DirectoryExists( const char* pzPath );
 bool fileExists( const char* pzPath );
 std::vector<std::string> getFilesInDir(const char* dirPath);