Backported globbing from master.

modules/core/include/opencv2/core/core.hpp

@@ -225,6 +225,8 @@ CV_EXPORTS ErrorCallback redirectError( ErrorCallback errCallback,
 #define CV_DbgAssert(expr)
 #endif
 
+CV_EXPORTS void glob(String pattern, std::vector<String>& result, bool recursive = false);
+
 CV_EXPORTS void setNumThreads(int nthreads);
 CV_EXPORTS int getNumThreads();
 CV_EXPORTS int getThreadNum();

modules/core/src/glob.cpp

+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+//  By downloading, copying, installing or using the software you agree to this license.
+//  If you do not agree to this license, do not download, install,
+//  copy or use the software.
+//
+//
+//                           License Agreement
+//                For Open Source Computer Vision Library
+//
+// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
+// Copyright (C) 2008-2013, Willow Garage Inc., all rights reserved.
+// Third party copyrights are property of their respective owners.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+//   * Redistribution's of source code must retain the above copyright notice,
+//     this list of conditions and the following disclaimer.
+//
+//   * Redistribution's in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and / or other materials provided with the distribution.
+//
+//   * The name of the copyright holders may not be used to endorse or promote products
+//     derived from this software without specific prior written permission.
+//
+// This software is provided by the copyright holders and contributors "as is" and
+// any express or implied warranties, including, but not limited to, the implied
+// warranties of merchantability and fitness for a particular purpose are disclaimed.
+// In no event shall the Intel Corporation or contributors be liable for any direct,
+// indirect, incidental, special, exemplary, or consequential damages
+// (including, but not limited to, procurement of substitute goods or services;
+// loss of use, data, or profits; or business interruption) however caused
+// and on any theory of liability, whether in contract, strict liability,
+// or tort (including negligence or otherwise) arising in any way out of
+// the use of this software, even if advised of the possibility of such damage.
+//
+//M*/
+
+#include "precomp.hpp"
+
+#if defined WIN32 || defined _WIN32 || defined WINCE
+# include <windows.h>
+const char dir_separators[] = "/\\";
+const char native_separator = '\\';
+
+namespace
+{
+    struct dirent
+    {
+        const char* d_name;
+    };
+
+    struct DIR
+    {
+        WIN32_FIND_DATA data;
+        HANDLE handle;
+        dirent ent;
+    };
+
+    DIR* opendir(const char* path)
+    {
+        DIR* dir = new DIR;
+        dir->ent.d_name = 0;
+        dir->handle = ::FindFirstFileA((cv::String(path) + "\\*").c_str(), &dir->data);
+        if(dir->handle == INVALID_HANDLE_VALUE)
+        {
+            /*closedir will do all cleanup*/
+            return 0;
+        }
+        return dir;
+    }
+
+    dirent* readdir(DIR* dir)
+    {
+        if (dir->ent.d_name != 0)
+        {
+            if (::FindNextFile(dir->handle, &dir->data) != TRUE)
+                return 0;
+        }
+        dir->ent.d_name = dir->data.cFileName;
+        return &dir->ent;
+    }
+
+    void closedir(DIR* dir)
+    {
+        ::FindClose(dir->handle);
+        delete dir;
+    }
+
+
+}
+#else
+# include <dirent.h>
+# include <sys/stat.h>
+const char dir_separators[] = "/";
+const char native_separator = '/';
+#endif
+
+static bool isDir(const cv::String& path, DIR* dir)
+{
+#if defined WIN32 || defined _WIN32 || defined WINCE
+    DWORD attributes;
+    if (dir)
+        attributes = dir->data.dwFileAttributes;
+    else
+        attributes = ::GetFileAttributes(path.c_str());
+
+    return (attributes != INVALID_FILE_ATTRIBUTES) && ((attributes & FILE_ATTRIBUTE_DIRECTORY) != 0);
+#else
+    (void)dir;
+    struct stat stat_buf;
+    if (0 != stat( path.c_str(), &stat_buf))
+        return false;
+    int is_dir = S_ISDIR( stat_buf.st_mode);
+    return is_dir != 0;
+#endif
+}
+
+static bool wildcmp(const char *string, const char *wild)
+{
+    // Based on wildcmp written by Jack Handy - <A href="mailto:jakkhandy@hotmail.com">jakkhandy@hotmail.com</A>
+    const char *cp = 0, *mp = 0;
+
+    while ((*string) && (*wild != '*'))
+    {
+        if ((*wild != *string) && (*wild != '?'))
+        {
+            return false;
+        }
+
+        wild++;
+        string++;
+    }
+
+    while (*string)
+    {
+        if (*wild == '*')
+        {
+            if (!*++wild)
+            {
+                return true;
+            }
+
+            mp = wild;
+            cp = string + 1;
+        }
+        else if ((*wild == *string) || (*wild == '?'))
+        {
+            wild++;
+            string++;
+        }
+        else
+        {
+            wild = mp;
+            string = cp++;
+        }
+    }
+
+    while (*wild == '*')
+    {
+        wild++;
+    }
+
+    return *wild == 0;
+}
+
+static void glob_rec(const cv::String& directory, const cv::String& wildchart, std::vector<cv::String>& result, bool recursive)
+{
+    DIR *dir;
+    struct dirent *ent;
+
+    if ((dir = opendir (directory.c_str())) != 0)
+    {
+        /* find all the files and directories within directory */
+        try
+        {
+            while ((ent = readdir (dir)) != 0)
+            {
+                const char* name = ent->d_name;
+                if((name[0] == 0) || (name[0] == '.' && name[1] == 0) || (name[0] == '.' && name[1] == '.' && name[2] == 0))
+                    continue;
+
+                cv::String path = directory + native_separator + name;
+
+                if (isDir(path, dir))
+                {
+                    if (recursive)
+                        glob_rec(path, wildchart, result, recursive);
+                }
+                else
+                {
+                    if (wildchart.empty() || wildcmp(name, wildchart.c_str()))
+                        result.push_back(path);
+                }
+            }
+        }
+        catch (...)
+        {
+            closedir(dir);
+            throw;
+        }
+        closedir(dir);
+    }
+    else CV_Error(CV_StsObjectNotFound, cv::format("could not open directory: %s", directory.c_str()));
+}
+
+void cv::glob(String pattern, std::vector<String>& result, bool recursive)
+{
+    result.clear();
+    String path, wildchart;
+
+    if (isDir(pattern, 0))
+    {
+        if(strchr(dir_separators, pattern[pattern.size() - 1]) != 0)
+        {
+            path = pattern.substr(0, pattern.size() - 1);
+        }
+        else
+        {
+            path = pattern;
+        }
+    }
+    else
+    {
+        size_t pos = pattern.find_last_of(dir_separators);
+        if (pos == String::npos)
+        {
+            wildchart = pattern;
+            path = ".";
+        }
+        else
+        {
+            path = pattern.substr(0, pos);
+            wildchart = pattern.substr(pos + 1);
+        }
+    }
+
+    glob_rec(path, wildchart, result, recursive);
+    std::sort(result.begin(), result.end());
+}

modules/core/test/test_io.cpp

@@ -454,6 +454,23 @@ protected:
 TEST(Core_InputOutput, huge) { CV_BigMatrixIOTest test; test.safe_run(); }
 */
 
+TEST(Core_globbing, accuracy)
+{
+    std::string patternLena    = cvtest::TS::ptr()->get_data_path() + "lena*.*";
+    std::string patternLenaPng = cvtest::TS::ptr()->get_data_path() + "lena.png";
+
+    std::vector<String> lenas, pngLenas;
+    cv::glob(patternLena, lenas, true);
+    cv::glob(patternLenaPng, pngLenas, true);
+
+    ASSERT_GT(lenas.size(), pngLenas.size());
+
+    for (size_t i = 0; i < pngLenas.size(); ++i)
+    {
+        ASSERT_NE(std::find(lenas.begin(), lenas.end(), pngLenas[i]), lenas.end());
+    }
+}
+
 TEST(Core_InputOutput, FileStorage)
 {
     std::string file = cv::tempfile(".xml");