Wharfie

--- a
+++ b/trunk/wharfie/lib/makefile.py
@@ -0,0 +1,104 @@
+#!/usr/bin/python
+#
+# Copyright 2017 Ingo Hornberger <ingo_@gmx.net>
+#
+# This software is licensed under the MIT License
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy of this
+# software and associated documentation files (the "Software"), to deal in the Software
+# without restriction, including without limitation the rights to use, copy, modify,
+# merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to the following
+# conditions:
+#
+# The above copyright notice and this permission notice shall be included in all copies
+# or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+# INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+# PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
+# OR OTHER DEALINGS IN THE SOFTWARE.
+#
+################################################################################
+# We use templates, which are checking their execution context,
+# to be sure, that target commands are really only executed
+# in the change root of the image.
+templateTrgCmd = "#!/bin/bash\n[ -f ../Wharfile ] && exit 2;\n%s\n"
+templateHostCmd = "#!/bin/bash\n[ ! -f ../Wharfile ] && exit 2;\n%s"
+
+archiveName = 'rootfs.tar';
+makeTargets = list();
+environment = list();
+finalTarget = list();
+
+#
+# Write a Makefile
+#
+def write_makefile(filename, dry_run, installpath='.'):
+    f = open(filename, 'w');
+    # write header
+    f.write("ifneq (VERBOSE,y)\n")
+    f.write("Q=@\n")
+    f.write("endif\n")
+    f.write("\n")
+    f.write("OUTPUT_FILE=%s\n" % archiveName)
+    f.write("%s: %s\n" % (archiveName, "".join(finalTarget)));
+    f.write("\tcp $< $@\n");
+    f.write("\n");
+
+    
+    # write all environment variables
+    for env in environment:
+        l = env.lstrip().split(" ")
+        f.write("export %s=%s\n" % (l[0], " ".join(l[1:])));
+
+    # write all targets
+    for target in makeTargets:
+        if 'comment' in target:
+            f.write("# %s\n" % target['comment']);
+        f.write("%s: %s\n" % (target['name'], " ".join(target['dep'])));
+        f.write("\t${Q}-mkdir $$(basename $@ .tar)\n");
+
+        if 'trgcmd' in target:
+            cmd = templateTrgCmd % (target['trgcmd'].replace('$', '\\$$').replace('"', '\\"'));
+            f.write("\t${Q}echo '******************************'\n");
+            f.write("\t${Q}echo '%s'\n" % target['comment']);
+            f.write("\t${Q}echo '******************************'\n");
+            f.write("\t${Q}(echo -e \"%s\") | tee ./$$(basename $@ .tar)/.trg.sh\n" % cmd.replace('\\n', '\\\\\\n').replace('\n', '\\n').replace('!', '"\'!\'"'));
+            f.write("\t${Q}chmod a+x ./$$(basename $@ .tar)/.trg.sh\n");
+
+        if 'hostcmd' in target:
+            cmd = templateHostCmd % (target['hostcmd'].replace('$', '\\$$').replace('"', '\\"'));
+            f.write("\t${Q}echo '******************************'\n");
+            f.write("\t${Q}echo '%s'\n" % target['comment']);
+            f.write("\t${Q}echo '******************************'\n");
+            f.write("\t${Q}(echo -e \"%s\") | tee ./$$(basename $@ .tar)/.hst.sh\n" % cmd.replace('\\n', '\\\\\\\\n').replace('\n', '\\n').replace('!', '"\'!\'"'));
+            f.write("\t${Q}chmod a+x ./$$(basename $@ .tar)/.hst.sh\n");
+
+        # start command here ...
+        f.write("\t${Q}${SUDO} bash -c \"");
+        
+        f.write("cd $$(basename $@ .tar); tar -xf ../$<; "); 
+        if not dry_run:
+            f.write("[ -f .trg.sh ] && chroot . ./.trg.sh; rm -f ./.trg.sh; ");
+            f.write("[ -f .hst.sh ] && ./.hst.sh; rm -f ./.hst.sh; ");
+        if not 'temporary' in target or not target['temporary']:
+            f.write("tar -cf '../$@' .;");
+        f.write("\"\n");
+        # ... end command
+            
+
+        if 'temporary' in target and target['temporary']:
+            f.write("\t${Q}cp $< $@\n");
+
+        f.write("\t${Q}-${SUDO} rm -Rf ./$$(basename $@ .tar)\n");
+        f.write("\n");
+
+    # write footer
+    f.write("include %s/wharfie.mk\n" % installpath);
+    if installpath != '.':
+        f.write("-include wharfie.mk\n");
+    f.write("\n");
+