Support/PathV2: Implement directory iteration on POSIX.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122879 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/Unix/PathV2.inc b/lib/Support/Unix/PathV2.inc
index 0facd6f..80e75ec 100644
--- a/lib/Support/Unix/PathV2.inc
+++ b/lib/Support/Unix/PathV2.inc
@@ -23,6 +23,22 @@
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
+#if HAVE_DIRENT_H
+# include <dirent.h>
+# define NAMLEN(dirent) strlen((dirent)->d_name)
+#else
+# define dirent direct
+# define NAMLEN(dirent) (dirent)->d_namlen
+# if HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif
+# if HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif
+# if HAVE_NDIR_H
+# include <ndir.h>
+# endif
+#endif
#if HAVE_STDIO_H
#include <stdio.h>
#endif
@@ -408,6 +424,44 @@
return success;
}
+error_code directory_iterator_construct(directory_iterator &it, StringRef path){
+ SmallString<128> path_null(path);
+ DIR *directory = ::opendir(path_null.c_str());
+ if (directory == 0)
+ return error_code(errno, system_category());
+
+ it.IterationHandle = reinterpret_cast<intptr_t>(directory);
+ // Add something for replace_filename to replace.
+ path::append(path_null, ".");
+ it.CurrentEntry = directory_entry(path_null.str());
+ return directory_iterator_increment(it);
+}
+
+error_code directory_iterator_destruct(directory_iterator& it) {
+ if (it.IterationHandle)
+ ::closedir(reinterpret_cast<DIR *>(it.IterationHandle));
+ it.IterationHandle = 0;
+ it.CurrentEntry = directory_entry();
+ return success;
+}
+
+error_code directory_iterator_increment(directory_iterator& it) {
+ errno = 0;
+ dirent *cur_dir = ::readdir(reinterpret_cast<DIR *>(it.IterationHandle));
+ if (cur_dir == 0 && errno != 0) {
+ return error_code(errno, system_category());
+ } else if (cur_dir != 0) {
+ StringRef name(cur_dir->d_name, NAMLEN(cur_dir));
+ if ((name.size() == 1 && name[0] == '.') ||
+ (name.size() == 2 && name[0] == '.' && name[1] == '.'))
+ return directory_iterator_increment(it);
+ it.CurrentEntry.replace_filename(name);
+ } else
+ return directory_iterator_destruct(it);
+
+ return success;
+}
+
} // end namespace fs
} // end namespace sys
} // end namespace llvm