Add system::glob().

include/system.hpp

@@ -24,6 +24,10 @@ std::string join(const std::string& path1, const std::string& path2, Paths... pa
 `depth` is the number of directories to recurse. 0 depth does not recurse. -1 depth recurses infinitely.
 */
 std::vector<std::string> getEntries(const std::string& dirPath, int depth = 0);
+/** Expands a glob pattern such as `dir/file*.txt` to a list of paths.
+Paths are sorted.
+*/
+std::vector<std::string> glob(const std::string& pattern);
 bool exists(const std::string& path);
 /** Returns whether the given path is a file. */
 bool isFile(const std::string& path);

src/system.cpp

@@ -9,6 +9,7 @@
 #include <dirent.h>
 #include <sys/stat.h>
 #include <cxxabi.h> // for abi::__cxa_demangle
+#include <glob.h>
 
 #if defined ARCH_LIN || defined ARCH_MAC
 	#include <pthread.h>
@@ -88,6 +89,22 @@ std::vector<std::string> getEntries(const std::string& dirPath, int depth) {
 }
 
 
+std::vector<std::string> glob(const std::string& pattern) {
+	glob_t glob_result;
+	memset(&glob_result, 0, sizeof(glob_result));
+	std::vector<std::string> paths;
+
+	if (!glob(pattern.c_str(), GLOB_BRACE, NULL, &glob_result)) {
+		for (size_t i = 0; i < glob_result.gl_pathc; i++) {
+			paths.push_back(std::string(glob_result.gl_pathv[i]));
+		}
+	}
+
+	globfree(&glob_result);
+	return paths;
+}
+
+
 bool exists(const std::string& path) {
 	try {
 		return fs::exists(fs::u8path(path));