Longer names support for all ID and other object names

This commit extends limit of ID and objects to 64 (it means 63 meaning
characters and 1 for zero-terminator). CustomData layers names are also
extended.
Changed DNA structures and all places where length constants were hardcoded.

All names which are "generating" from ID block should be limited by MAX_ID_NAME-2,
all non-id names now has got own define called MAX_NAME which should be used all
over for non-id names to make further name migration stuff easier.

All name fields in DNA now have comment with constant which corresponds to
hardcoded numeric value which should make it easier to further update this
limits or even switch to non-hardcoded values in DNA.

Special thanks to Campbell who helped figuring out some issues and helped a lot
in finding all cases where hardcoded valued were still used in code.

Both of forwards and backwards compatibility is stored with blender versions newer
than January 5, 2011. Older versions had issue with placing null-terminator to
DNA strings on file load which will lead to some unpredictable behavior or even
crashes.

3 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/editors/interface/interface.c b/source/blender/editors/interface/interface.c
index 4948073f9c6..239dae7d236 100644
--- a/source/blender/editors/interface/interface.c
+++ b/source/blender/editors/interface/interface.c
@@ -2920,7 +2920,7 @@ static void autocomplete_id(bContext *C, char *str, void *arg_v)
 	
 	/* search if str matches the beginning of an ID struct */
 	if(str[0]) {
-		AutoComplete *autocpl= autocomplete_begin(str, 22);
+		AutoComplete *autocpl= autocomplete_begin(str, MAX_ID_NAME-2);
 		ID *id;
 		
 		for(id= listb->first; id; id= id->next)
diff --git a/source/blender/editors/interface/interface_layout.c b/source/blender/editors/interface/interface_layout.c
index 84f0c61cd0c..5e42b06e1a7 100644
--- a/source/blender/editors/interface/interface_layout.c
+++ b/source/blender/editors/interface/interface_layout.c
@@ -1208,7 +1208,7 @@ static void rna_search_cb(const struct bContext *C, void *arg_but, const char *s
 
 		if(itemptr.type && RNA_struct_is_ID(itemptr.type)) {
 			ID *id= itemptr.data;
-			char name_ui[32];
+			char name_ui[MAX_ID_NAME];
 
 #if 0		/* this name is used for a string comparison and can't be modified, TODO */
 			name_uiprefix_id(name_ui, id);
diff --git a/source/blender/editors/interface/interface_templates.c b/source/blender/editors/interface/interface_templates.c
index 3ffc38791d6..573b6cd0b08 100644
--- a/source/blender/editors/interface/interface_templates.c
+++ b/source/blender/editors/interface/interface_templates.c
@@ -140,7 +140,7 @@ static void id_search_cb(const bContext *C, void *arg_template, const char *str,
 					continue;
 
 			if(BLI_strcasestr(id->name+2, str)) {
-				char name_ui[32];
+				char name_ui[MAX_ID_NAME];
 				name_uiprefix_id(name_ui, id);
 
 				iconid= ui_id_icon_get((bContext*)C, id, 1);