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authorP. J. McDermott <pj@pehjota.net>2014-11-11 22:59:37 (EST)
committer P. J. McDermott <pj@pehjota.net>2014-11-11 22:59:37 (EST)
commit7e06d71041552a4a8b8d874fb81081a810930afd (patch)
treea5879363eff166b420da98e4e87fa0364ce54a61
parent629c9ceed8611e9a2d1b5779f544b3e312b33b0f (diff)
lib/dir.sh: New file
-rw-r--r--lib/dir.sh46
-rw-r--r--lib/local.mk1
2 files changed, 47 insertions, 0 deletions
diff --git a/lib/dir.sh b/lib/dir.sh
new file mode 100644
index 0000000..f6b6710
--- /dev/null
+++ b/lib/dir.sh
@@ -0,0 +1,46 @@
+# Miscellaneous directory-related functions
+#
+# Copyright (C) 2013 Patrick "P. J." McDermott
+#
+# This file is part of the ProteanOS Development Kit.
+#
+# The ProteanOS Development Kit is free software: you can redistribute
+# it and/or modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# The ProteanOS Development Kit is distributed in the hope that it
+# will be useful, but WITHOUT ANY WARRANTY; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with the ProteanOS Development Kit. If not, see
+# <http://www.gnu.org/licenses/>.
+
+[ "x${_DIR_SM+set}" = 'xset' ] && return 0
+_DIR_SM=1
+
+dir_is_empty()
+{
+ local dir="${1}"
+ local ret=
+ local dirent=
+
+ ret=0
+
+ # Patterns to match all dirents except "." and "..":
+ # * dirents whose names don't start with "."
+ # .[!.] dirents whose names start with ".", are two characters long,
+ # and aren't ".."
+ # .??* dirents whose names start with "." and are three or more
+ # characters long
+ for dirent in "${dir}/"* "${dir}/".[!.] "${dir}/".[!.] "${dir}/".??*; do
+ if [ -e "${dirent}" ]; then
+ ret=1
+ break
+ fi
+ done
+
+ return ${ret}
+}
diff --git a/lib/local.mk b/lib/local.mk
index f87ab10..1ce768c 100644
--- a/lib/local.mk
+++ b/lib/local.mk
@@ -3,6 +3,7 @@ pkgdata_sources = \
lib/locale.sh \
lib/getopt.sh \
lib/fd.sh \
+ lib/dir.sh \
lib/archplat.sh \
lib/deps.sh \
lib/substvars.sh \