From 3e100e9de3cec5ec5e9a641e782ae47ca095233d Mon Sep 17 00:00:00 2001
From: Luke Shumaker <LukeShu@sbcglobal.net>
Date: Sun, 13 Sep 2009 15:20:14 -0400
Subject: bichun! fixed makefiles, moved around files

The wrapper is now a hybrid shell-C program.
A shell script does the integrated commands, but
it calls the C program (`$(libexecdir)/rvs/runcom') to launch plugins
Note that right now, it does EVERYTHING BUT launch plugins.
---
 HACKING             |  21 ++++---
 Makefile.in         |  34 +++++------
 README              |  22 +++----
 rvs.sh              | 164 ----------------------------------------------------
 wrapper/Makefile.in |  26 +++++++--
 wrapper/TODO        |   4 +-
 wrapper/runcom.c    |  50 ++++++++++++++++
 wrapper/rvs.c       |  47 ---------------
 wrapper/rvs.sh      | 110 +++++++++++++++++++++++++++++++++++
 9 files changed, 225 insertions(+), 253 deletions(-)
 delete mode 100644 rvs.sh
 create mode 100644 wrapper/runcom.c
 delete mode 100644 wrapper/rvs.c
 create mode 100644 wrapper/rvs.sh

diff --git a/HACKING b/HACKING
index 3b8b891..a198138 100644
--- a/HACKING
+++ b/HACKING
@@ -1,10 +1,9 @@
 #!/bin/more
-//////////////////////////////////////////////////////////////////////
-                               rvs 0.7.0
-	retroactive versioning system
-	          a versioning system that allows you to check
-	            in commit 2 before commit 1
-//////////////////////////////////////////////////////////////////////
+
+   Version 0.8c reimplements the wrapper in C, to allow better
+   cooperation betweem plugins via dependancies.  This probably makes
+   a lot of this document out-dated, but a lot of it is still good, it
+   describes the workings of the plugins, and the repo structure.
 
    I know this file is long* and boring. I try to keep it preened and
    informative, but would rather spend my time actually hacking. If
@@ -12,6 +11,14 @@
    
    * at 200+ lines, it's longer than any rvs source file
 
+- - -cut-here- - 8< - - - - - - - - - - - - - - - - - - - - - - - - - 
+//////////////////////////////////////////////////////////////////////
+                               rvs 0.7.0
+	retroactive versioning system
+	          a versioning system that allows you to check
+	            in commit 2 before commit 1
+//////////////////////////////////////////////////////////////////////
+
                               hacking
 
   build basics
@@ -282,7 +289,7 @@
    Only until rvs becomes self-hosting.
 
    If anyone needs any help, let me know, either via email, or via
-   Launchpad, I'll be happy to help!
+   Launchpad, I'll be happy to help/would love to have your help!
 
 ~ Luke Shumaker <LukeShu@sbcglobal.net>
 Happy Hacking!
diff --git a/Makefile.in b/Makefile.in
index bef0841..e72005a 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -54,19 +54,18 @@ uninstall-plugins  = $(addprefix uninstall-p-,$(plugins))
 clean-plugins      = $(addprefix     clean-p-,$(plugins))
 distclean-plugins  = $(addprefix distclean-p-,$(plugins))
 dist-plugins       = $(addprefix      dist-p-,$(plugins))
-
+$(info $(build-plugins))
 # phony targets ####################################################
-all : $(rvs) $(build-plugins)
-.PHONY : install uninstall clean distclean dist libexec $(build-plugins) $(rvs)\
-$(install-plugins) $(uninstall-plugins) $(clean-plugins) $(distclean-plugins) \
-  install-$(rvs)     uninstall-$(rvs)     clean-$(rvs)     distclean-$(rvs)   \
-$(dist-plugins) \
-  dist-$(rvs)
+all : wrapper $(build-plugins)
+.PHONY : install uninstall clean distclean dist libexec \
+  build-wrapper    install-wrapper    uninstall-wrapper    clean-wrapper    distclean-wrapper    dist-wrapper 
+#$(build-plugins) $(install-plugins) $(uninstall-plugins) $(clean-plugins) $(distclean-plugins) $(dist-plugins)
+
 .SUFFIXES :
 
 # install ##########################################################
 
-install : install-$(rvs) libexec $(install-plugins)
+install : install-wrapper libexec $(install-plugins)
 
 # $(libexecdir)/rvs/*
 libexec : $(libexecdir)/$(rvs)/plugins
@@ -81,9 +80,9 @@ uninstall :
 
 # clean ############################################################
 
-clean : $(clean-plugins) clean-$(rvs)
+clean : $(clean-plugins) clean-wrapper
 
-distclean : clean $(distclean-plugins) distclean-$(rvs)
+distclean : clean $(distclean-plugins) distclean-wrapper
 	$(RM) Makefile
 
 # dist #############################################################
@@ -100,14 +99,15 @@ $(d) : distclean
 
 # wrapper ##########################################################
 
-$(rvs)           : wrapper/ wrapper/Makefile; $(MAKE) -C $<
-uninstall-$(rvs) : wrapper/ wrapper/Makefile; $(MAKE) -C $< uninstall
-clean-$(rvs)     : wrapper/ wrapper/Makefile; $(MAKE) -C $< clean
-distclean-$(rvs) : wrapper/ wrapper/Makefile; $(MAKE) -C $< distclean
-dist-$(rvs)      : wrapper/ wrapper/Makefile; $(MAKE) -C $< dist
+wrapper : build-wrapper
+build-wrapper     : wrapper/ wrapper/Makefile; $(MAKE) -C $<
+uninstall-wrapper : wrapper/ wrapper/Makefile; $(MAKE) -C $< uninstall
+clean-wrapper     : wrapper/ wrapper/Makefile; $(MAKE) -C $< clean
+distclean-wrapper : wrapper/ wrapper/Makefile; $(MAKE) -C $< distclean
+dist-wrapper      : wrapper/ wrapper/Makefile; $(MAKE) -C $< dist
 
-install-$(rvs)   : wrapper/ wrapper/Makefile $(rvs); $(MAKE) -C $< install
-$(RVS) : install-$(rvs)
+install-wrapper   : wrapper/ wrapper/Makefile wrapper; $(MAKE) -C $< install
+$(RVS) : install-wrapper
 
 # plugins ##########################################################
 
diff --git a/README b/README
index fc90d89..be5298c 100644
--- a/README
+++ b/README
@@ -1,6 +1,6 @@
 #!/bin/more
 //////////////////////////////////////////////////////////////////////
-                               rvs 0.6.3
+                               rvs 0.8c r54
 	retroactive versioning system
 	          a versioning system that allows you to check
 	            in commit 2 before commit 1
@@ -8,10 +8,6 @@
 
 introduction
 
-   The name is a little bit of a nod to RCS (revision control
-   system), and even less to CVS. I'm not particularly fond of CVS,
-   but recognize it's impact on the scm scene.
-
    rvs is about being able to go back and edit *anything* that has
    already been committed. Yes, some other SCMs do this, but fuck
    things proper if someone else has a copy of the old version.
@@ -25,13 +21,13 @@ introduction
 system requirements
 
    Pretty much any *nix system should be able to run rvs. If you
-   need to use a shell other than GNU bash, run ./configure with
+   need to use a shell other than /bin/sh, run ./configure with
    the --SHELL=YOUR_SHELL option. rvs is not designed for Windows,
    but should be able to run in bash if you have some *nix pack
    installed.
 
-   To my knowledge, this is the absolute requirements (all need to
-   be in your PATH):
+   To my knowledge, this is the absolute requirements (all but the
+   shell need to be in your PATH):
      * a POSIX shell (tested with dash, and GNU BASH)
      * cat      (included in GNU Core Utils)
      * cp       (included in GNU Core Utils)
@@ -53,10 +49,8 @@ building
    	# make install
 
    It's generally considered good practice to build in another
-   directory than the source directory. This is not nescessary in
-   rvs , all the created file are put in another directory anyway.
-   If you would still like to do this, it can be done in rvs-0.6.1
-   and up.
+   directory than the source directory. If you would still like to do
+   this, it can be done in rvs-0.6.1 and up.
 
   Configuration
 
@@ -69,7 +63,9 @@ building
    	name='rvs'
    		The name of the program. Note that unlike most
    		variables, you should NOT call this in Makefiles
-   		(`$(name)'), but use $(rvs) instead.
+   		(`$(name)'), but use `$(rvs)'s instead.
+   	CC='gcc'
+   		The C language compiler to use.
    	RVS='$(bindir)/$(rvs)'
    		Where the exectuable will be. `$(rvs)' is the same as
    		`$(name)' (see above)
diff --git a/rvs.sh b/rvs.sh
deleted file mode 100644
index f54f553..0000000
--- a/rvs.sh
+++ /dev/null
@@ -1,164 +0,0 @@
-#!@SHELL@
-name='@name@'
-ver='0.7.3'
-#   Copyright (C) 2009 Luke Shumaker
-#   
-#   This file is part of rvs.
-#   
-#   rvs 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 2, or (at your option) any later version.
-#   
-#   rvs 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 rvs; see the file COPYING.
-#   If not, write to the Free Software Foundation,
-#   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-RVS="$0" #RVS="@rvs@"
-libexecdir="@libexecdir@/$name"
-
-_error() {
-	echo "$name: $1" >> /dev/stderr
-	exit 1
-}
-
-_repo() {
-	repo=".$name"
-	pwd=`pwd`
-	owd="$pwd"
-	
-	while [ "$pwd" != "`pwd`" ] && [ ! -e "`pwd`/$repo" ]; do
-		pwd=`pwd`
-		cd ..
-	done
-	
-	if [ -e "`pwd`/$repo" ]; then
-		echo "`pwd`/$repo"
-	else 
-		_error "no $name repository found"
-	fi
-	cd "$owd"
-}
-
-_init() {
-	repo=`_repo 2> /dev/null`
-	if [ -z "$repo" ]; then
-		repo=".$name"
-		install -d "$repo"
-		install -T $libexecdir/plugins $repo/plugins
-		while read plugin; do
-			echo "initializing plugin \`$plugin'"
-			install -d "$repo/$plugin"
-			export REPO=.rvs/$plugin
-			if [ -e "$libexecdir/$plugin/init" ]; then
-				"$libexecdir/$plugin/init"
-			fi
-		done < $repo/plugins
-	else
-		_error "repository already exists at \`$repo'"
-	fi
-}
-
-_install() {
-	id=$1
-	dir=${2-$id}
-	name=`echo $id | sed 's/-.*$//'`
-	if (grep "^$name-" "$libexecdir/plugins" &> /dev/null); then
-		# an entry for this plugin already exists, though possibly a
-		# different version
-		sed -i "s/^$name-.*$/$id/" "$libexecdir/plugins"
-	else
-		echo "$id" >> "$libexecdir/plugins"
-	fi
-	rm -rf         "$libexecdir/$id"
-	cp -rpT "$dir" "$libexecdir/$id"
-}
-
-_uninstall() {
-	id=$1
-	sed -i "/^$id$/ d" "$libexecdir/plugins"
-	rm -rf "$libexecdir/$id"
-}
-
-_treebranch() {
-	branch="$1"
-	for com in "$branch"; do
-		var="r_$com"
-		if [ -z "\$$var" ]; then
-			exec r$var="`$libexecdir/$com $param`"
-			var="_$com"
-			_treebranch "\$$var"
-		else
-			_error "plugin dependancy loop detected"
-		fi
-	done
-}
-
-_runcom() {
-	com="$1"
-	tmp_mast="`tempfile`"
-	# bash optimized version
-	#grep -E "^$com(:.*)?$" "$libexecdir/*/plugin.conf" | sed \
-	#	-e 's/\#.*//' \
-	#	-e "s:^${libexecdir//':'/'\:'}/::" \
-	#	-e 's@plugin.conf\:@@' > "$tmp_mast"
-	# POSIX version
-	grep -E "^$com(:.*)?$" $libexecdir/*/plugin.conf | sed \
-		-e 's/\#.*//' \
-		-e "s:^`echo "$libexecdir" |sed 's@:@\\:@g'`/::" \
-		-e 's@plugin.conf\:@@' > "$tmp_mast"
-	
-	# start processing-------------------------------------------
-	if [ "`wc -c < "$tmp_mast"`" = '0' ]; then
-		_error "unrecognized command \`$com'"
-	else
-		# create tree
-		tmp_work="`tempfile`"
-		lev1="`sed \
-			-e "/\:/w  '$tmp_work'" \
-			-e '/\:/d' "$tmp_mast"`"
-		while read line; do
-			com="`echo "$line" | sed 's/\:.*$/'`"
-			dep="_`echo "$line" | sed 's/.*\:$/'`"
-			# bash optimized version
-			#	eval $dep=\"${!dep} $com\"
-			# POSIX version
-				eval $dep=\"\$$dep $com\"
-		done < "$tmp_work"
-		rm "$tmp_work"
-		
-		# cycle through tree
-		_treebranch "$lev1"
-	fi
-	rm "$tmp_mast"
-}
-
-# START OPTION HANDLING #
-com=$1;
-# END   OPTION HANDLING #
-case "$com" in
-	'') _error 'no command specified';;
-	# 'repo') _repo; exit $?;;
-	'init') _init; exit $?;;
-	  'install') shift;   _install $@; exit $?;;
-	'uninstall') shift; _uninstall $@; exit $?;;
-	*)	repo=`_repo`
-		if [ "$?" = '0' ]; then
-			shift
-			param="$@"
-			_runcom
-			exit $?
-		else
-			_error "cannot find an existing repository"
-		fi
-	:;;
-esac
-
-# Copy/Paste Virus 1.3c Please copy and paste this text anywhere. Track
-# its progress by searching for this MD5#f7eac285ebfe21c4587bfebb9582f90d
-
diff --git a/wrapper/Makefile.in b/wrapper/Makefile.in
index 85f56f7..a6eef15 100644
--- a/wrapper/Makefile.in
+++ b/wrapper/Makefile.in
@@ -31,6 +31,7 @@ dirs = $(srcdir) $(prefix) $(exec_prefix) $(bindir) $(sbindir) $(libexecdir)/
 #export   srcdir    prefix    exec_prefix    bindir    sbindir    libexecdir
 
 # programs #########################################################
+CC  = @CC@
 RVS ?= @RVS@
 SHELL ?= @SHELL@
 RM ?= rm
@@ -43,19 +44,36 @@ INSTALL_DATA ?= $(INSTALL) -m 644
 TOUCH ?= touch # This file doesn't use touch
 #export RVS SHELL RM CP SED INSTALL MKDIR INSTALL_PROGRAM INSTALL_DATA TOUCH
 
+CFLAGS = -DLIBEXECDIR=\"$(libexecdir)\" -DPLUGIN_CONF=\"plugin.conf\"
+
 # phony targets ####################################################
-all : rvs
-.PHONY : install uninstall clean distclean dist
+all : rvs runcom
+.PHONY : install uninstall clean distclean dist install-runcom
 .SUFFIXES : .c .o
 VPATH = $(srcdir)/wrapper
 
 # most everything ##################################################
-install : $(RVS)
-$(RVS) : rvs $(bindir)
+RUNCOM = $(libexecdir)/$(rvs)/runcom
+install : $(RVS) $(RUNCOM)
+$(RVS) : rvs $(dir $(RVS))
+	$(INSTALL_PROGRAM) $< $@
+
+$(RUNCOM): runcom $(dir $(RUNCOM))
+	$(INSTALL_PROGRAM) $< $@
+
+b := @
+# build shell scripts
+rvs : rvs.sh
 	$(INSTALL_PROGRAM) $< $@
+	$(SED) -i \
+	-e 's/$bSHELL@/$(subst /,\/,$(SHELL))/g' \
+	-e 's/$bname@/$(rvs)/g' \
+	-e 's/$blibexecdir@/$(subst /,\/,$(libexecdir))/g' \
+	 $@
 
 uninstall :
 	$(RM) $(RVS)
+	$(RM) $(libexecdir)/$(rvs)/runcom
 
 clean :
 
diff --git a/wrapper/TODO b/wrapper/TODO
index 577c252..6d1bd2a 100644
--- a/wrapper/TODO
+++ b/wrapper/TODO
@@ -1,6 +1,8 @@
 #! /bin/more
 
-plugin-load.h:
+* add propper option handling via GNU getopt
+* actually launch the plugins
+* plugin-load.h:
 	The function `load_plugins' must loop through sub-directories in the
 	directory `libexecdir'.  They way it does this is an ugly kludge, and
 	should be rewritten.
diff --git a/wrapper/runcom.c b/wrapper/runcom.c
new file mode 100644
index 0000000..f581a45
--- /dev/null
+++ b/wrapper/runcom.c
@@ -0,0 +1,50 @@
+const char *name="rvs";
+const char *ver="0.8c";
+/* Copyright (C) 2009 Luke Shumaker
+   
+   This file is part of rvs.
+   
+   rvs 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 2, or (at your
+   option) any later version.
+   
+   rvs 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 rvs; see the file COPYING.
+   If not, write to the Free Software Foundation,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+*/
+
+#include "rvs.h"
+#include "plugins.h"
+#include "plugin-load.h"
+#include "plugin-find.h"
+#include "plugin-depend.h"
+
+const char *libexecdir=LIBEXECDIR;
+const char *plugin_conf=PLUGIN_CONF;
+
+int
+main ( int argc, char *argv[] )
+{
+	struct plugin *plugins=load_plugins(libexecdir,plugin_conf);
+	if (argc > 1) {
+		struct plugin_command_list *list;
+		list=plugin_find_commands(plugins,argv[1]);
+		struct plugin_command *root;
+		root=plugin_depend_list(list,plugins);
+		plugin_free_list(list);
+		plugin_free_command(root);
+	}
+	plugin_free_plugin(plugins);
+	return 0;
+}
+
+/* Copy/Paste Virus 1.3c Please copy and paste this text anywhere. Track   *\
+\* its progress by searching for this MD5#f7eac285ebfe21c4587bfebb9582f90d */
+
diff --git a/wrapper/rvs.c b/wrapper/rvs.c
deleted file mode 100644
index 4f2fa1b..0000000
--- a/wrapper/rvs.c
+++ /dev/null
@@ -1,47 +0,0 @@
-const char *name="rvs";
-const char *ver="0.8c";
-/* Copyright (C) 2009 Luke Shumaker
-   
-   This file is part of rvs.
-   
-   rvs 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 2, or (at your
-   option) any later version.
-   
-   rvs 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 rvs; see the file COPYING.
-   If not, write to the Free Software Foundation,
-   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-*/
-
-#include "rvs.h"
-#include "plugins.h"
-#include "plugin-load.h"
-#include "plugin-find.h"
-#include "plugin-depend.h"
-
-const char *libexecdir="./plugins";
-const char *plugin_conf="plugin.conf";
-
-int
-main ( int argc, char *argv[] )
-{
-	struct plugin *plugins=load_plugins(libexecdir,plugin_conf);
-	if (argc > 1) {
-		struct plugin_command_list *list;
-		list=plugin_find_commands(plugins,argv[1]);
-		struct plugin_command *root;
-		root=plugin_depend_list(list,plugins);
-		plugin_free_list(list);
-		plugin_free_command(root);
-	}
-	plugin_free_plugin(plugins);
-	return 0;
-}
-
diff --git a/wrapper/rvs.sh b/wrapper/rvs.sh
new file mode 100644
index 0000000..d7fc753
--- /dev/null
+++ b/wrapper/rvs.sh
@@ -0,0 +1,110 @@
+#!@SHELL@
+name='@name@'
+ver='0.8c'
+#   Copyright (C) 2009 Luke Shumaker
+#   
+#   This file is part of rvs.
+#   
+#   rvs 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 2, or (at your option) any later version.
+#   
+#   rvs 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 rvs; see the file COPYING.
+#   If not, write to the Free Software Foundation,
+#   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+RVS="$0" #RVS="@rvs@"
+libexecdir="@libexecdir@/$name"
+
+_error() {
+	echo "$name: $1" >> /dev/stderr
+	exit 1
+}
+
+_repo() {
+	repo=".$name"
+	pwd=`pwd`
+	owd="$pwd"
+	
+	while [ "$pwd" != "`pwd`" ] && [ ! -e "`pwd`/$repo" ]; do
+		pwd=`pwd`
+		cd ..
+	done
+	
+	if [ -e "`pwd`/$repo" ]; then
+		echo "`pwd`/$repo"
+	else 
+		_error "no $name repository found"
+	fi
+	cd "$owd"
+}
+
+_init() {
+	repo=`_repo 2> /dev/null`
+	if [ -z "$repo" ]; then
+		repo=".$name"
+		install -d "$repo"
+		install -T $libexecdir/plugins $repo/plugins
+		while read plugin; do
+			echo "initializing plugin \`$plugin'"
+			install -d "$repo/$plugin"
+			export REPO=.rvs/$plugin
+			if [ -e "$libexecdir/$plugin/init" ]; then
+				"$libexecdir/$plugin/init"
+			fi
+		done < $repo/plugins
+	else
+		_error "repository already exists at \`$repo'"
+	fi
+}
+
+_install() {
+	id=$1
+	dir=${2-$id}
+	name=`echo $id | sed 's/-.*$//'`
+	if (grep "^$name-" "$libexecdir/plugins" &> /dev/null); then
+		# an entry for this plugin already exists, though possibly a
+		# different version
+		sed -i "s/^$name-.*$/$id/" "$libexecdir/plugins"
+	else
+		echo "$id" >> "$libexecdir/plugins"
+	fi
+	rm -rf         "$libexecdir/$id"
+	cp -rpT "$dir" "$libexecdir/$id"
+}
+
+_uninstall() {
+	id=$1
+	sed -i "/^$id$/ d" "$libexecdir/plugins"
+	rm -rf "$libexecdir/$id"
+}
+
+# START OPTION HANDLING #
+com=$1;
+# END   OPTION HANDLING #
+case "$com" in
+	'') _error 'no command specified';;
+	# 'repo') _repo; exit $?;;
+	'init') _init; exit $?;;
+	  'install') shift;   _install $@; exit $?;;
+	'uninstall') shift; _uninstall $@; exit $?;;
+	*)	repo=`_repo`
+		if [ "$?" = '0' ]; then
+			shift
+			$libexecdir/runcom $@
+			exit $?
+		else
+			_error "cannot find an existing repository"
+		fi
+	:;;
+esac
+
+# Copy/Paste Virus 1.3c Please copy and paste this text anywhere. Track
+# its progress by searching for this MD5#f7eac285ebfe21c4587bfebb9582f90d
+
-- 
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