added automatic space_id detection

libraries/plugins/make_new_plugin.sh

@@ -1,5 +1,25 @@
 #!/bin/bash
 
+# Find next available space id by checking all current plugins
+next_space_id () {
+    SPACE_IDS=()
+    for i in * ; do
+        if [ -d "$i" ] && [ "$i" != "CMakeFiles" ]; then
+            cd "$i/include/graphene/$i"
+            result=$(grep -rnw '.' -e '#define [[:alnum:]]*_SPACE_ID')
+            B=$(echo $result | cut -d ' ' -f 3)
+            if [[ $B =~ [[:digit:]] ]]; then
+                SPACE_IDS+=($B)
+            fi
+            cd "../../../.."
+        fi
+    done
+    max=$( printf "%d\n" "${SPACE_IDS[@]}" | sort -n | tail -1 )
+    next=$(($max + 1))
+    return $next
+}
+
+## create new plugin
 if [ $# -ne 1 ]; then
     echo Usage: $0 my_new_plugin
     echo ... where my_new_plugin is the name of the plugin you want to create
@@ -16,6 +36,10 @@ mv $pluginName/include/graphene/template_plugin $pluginName/include/graphene/$pl
 for file in `find $pluginName -type f -name '*template_plugin*'`; do mv $file `sed s/template_plugin/$pluginName/g <<< $file`; done;
 echo Renaming in files...
 find $pluginName -type f -exec sed -i "s/template_plugin/$pluginName/g" {} \;
+echo Assigning next available SPACE_ID...
+next_space_id
+find $pluginName -type f -exec sed -i "s/0000/$?/g" {} \;
+
 echo "Done! $pluginName is ready."
 echo "Next steps:"
 echo "1- Add 'add_subdirectory( $pluginName )' to CmakeLists.txt in this directory."

libraries/plugins/template_plugin/include/graphene/template_plugin/template_plugin.hpp

@@ -29,6 +29,21 @@
 namespace graphene { namespace template_plugin {
 using namespace chain;
 
+//
+// Plugins should #define their SPACE_ID's so plugins with
+// conflicting SPACE_ID assignments can be compiled into the
+// same binary (by simply re-assigning some of the conflicting #defined
+// SPACE_ID's in a build script).
+//
+// Assignment of SPACE_ID's cannot be done at run-time because
+// various template automagic depends on them being known at compile
+// time.
+//
+#ifndef template_plugin_SPACE_ID
+#define template_plugin_SPACE_ID 0000
+#endif
+
+
 namespace detail
 {
     class template_plugin_impl;