X-Git-Url: https://www.kengrimes.com/gitweb/?p=henge%2Fapc.git;a=blobdiff_plain;f=src%2Fir.c;h=a175ef3fdfd93e7c47b02f332a4ac3f4e2cfef67;hp=76c221d2d376d164489635b47fec0920c976cd8c;hb=7dae7dc73dfbabdc895a78738f550f56561da644;hpb=1effafc476cde8a9996d2a520dd3afc3666f45af

diff --git a/src/ir.c b/src/ir.c
index 76c221d..a175ef3 100644
--- a/src/ir.c
+++ b/src/ir.c
@@ -14,30 +14,53 @@
 #include <unistd.h>   //u8_* functions
 #include <unitypes.h> //uint8_t as a char
 #include <unistr.h>   //u32_cpy
+#include <unistdio.h> //ulc_fprintf
 /* Local */
+#include "print.h"
 #include "apc.h"
 #include "ir.h"
+#undef  do_error
+#define do_error(...) exit(-1)
 /* Public */
 int      ir_init(void);
 void     ir_quit(void);
 int      ir_linker(void);
 int      ir_condenser(void);
-/* Private */
-extern //apc.c
-long sys_pagesize;
-static
-
-static inline
-struct ir_framebox_t* ir_set_add_framebox(struct ir_set_t*, uint8_t*);
-static inline
-void                  ir_quit_r(struct pagenode_t*);
-static inline
-int                   bytes_identical(uint8_t*,uint8_t*);
-
-/* Enumerated types */
-enum dtype { FSDAT, MSDAT, ADAT, LDAT, FBDAT };
-enum ltype { OLINK, MLINK, VLINK, ALINK };
+/* Memory allocation structures */
+struct pagenode_t;
+struct pagenode_header_t {
+  struct pagenode_t* next;
+  char*              head;
+};
+struct pagenode_t {
+  struct pagenode_header_t header;
+  char                     root[];
+};
+struct pagelist_t {
+  struct pagenode_t* root, * head;
+  size_t             pagesize;
+};
+#define DATA_PAGESIZE    (sys_pagesize)
+#define NAME_PAGESIZE    (APC_NAME_MAX * 1024)
+#define PL_HEADERSIZE    (sizeof(struct pagenode_header_t))
+#define PL_HEADSIZE(_PL) (_PL.head->header.head - _PL.head->root)
+#define PL_HEADMEM(_PL)  (_PL.pagesize - PL_HEADERSIZE - PL_HEADSIZE(_PL))
 /* Set data mem */
+enum dtype { FSDAT, MSDAT, ADAT, LDAT, FBDAT };
+struct ir_namelist_t;
+struct ir_namelist_t
+{ struct ir_namelist_t* nextsib;
+  uint8_t*              name;
+};
+struct ir_classld_t
+{ struct ir_class_t*    root_class;
+  struct ir_namelist_t* namelist, * namelist_head;
+};
+struct ir_setld_t
+{ struct ir_classld_t*  classld;
+  long long             ref;
+  struct ir_namelist_t* namelist, * namelist_head;
+};
 struct ir_setdata_header_t
 { enum dtype          type;
   uint8_t*            src_filename, * data_name;
@@ -47,21 +70,20 @@ struct ir_frameinfo_t
 { int facing, w, h; };
 struct ir_framedata_t
 { struct ir_setdata_header_t header;
-  struct ir_frameinfo_t     frameinfo;
-}** framedatas;
+  struct ir_frameinfo_t      frameinfo;
+};
 struct ir_framebox_t
 { struct ir_setdata_header_t header;
   struct ir_framedata_t      framesheets[FACING_MAX];
   struct ir_framedata_t      mapsheets[FACING_MAX];
-}** frameboxes;
-struct ir_simplex_t
-{ struct ir_setdat_header_t header;
-}** simplexes;
+};
+struct ir_simplex_t { struct ir_setdata_header_t header; };
 struct ir_link_t
-{ struct ir_setdat_header_t header;
-  struct ir_set_t*          src, * trg;
-  enum ltype                type;
-}** links;
+{ struct ir_setdata_header_t header;
+  struct ir_classld_t*       classld;
+  struct ir_setld_t*         setld;
+  enum ltype                 type;
+};
 union ir_setdata_t
 { struct ir_setdata_header_t  header;
   struct ir_framebox_t        framebox;
@@ -74,67 +96,81 @@ struct ir_class_t
 { struct ir_class_t* nextchild, * nextsib;
   struct ir_set_t*   root_set;
   uint8_t*           name;
-}** classes;
+};
 struct ir_set_t
-{ struct ir_set_t*    nextchild, * nextsib;
-  struct ir_class_t*  class;
-  long long           ref;
-  uint8_t*            name;
-  struct framebox_t*  frameboxes;
-  struct simplex_t*   audio;
-  struct link_t*      links;
-}** sets;
-/* Function-Like Macros */
-#define do_warn() do {				\
-  } while (0)
-#define wprint(str) do {			\
-    fprintf(stderr, str);			\
-    do_warn();					\
-  } while (0)
- #define wprintf(fmt,...) do {			\
-    fprintf(stderr, fmt, __VA_ARGS__);		\
-    do_warn();					\
-  } while (0)
-#define do_error() do {				\
-    exit(-1);					\
-  } while (0)
-#define eprint(str) do {			\
-    fprintf(stderr, str);			\
-    do_error();					\
-  } while (0)
-#define eprintf(fmt,...) do {			\
-    fprintf(stderr, fmt, __VA_ARGS__);		\
-    do_error();					\
-  } while (0)
-#define struct_alloc(_T) ((struct _T*) stack_alloc(sizeof(struct _T)))
-
-
+{ struct ir_set_t*      nextchild, * nextsib;
+  struct ir_class_t*    class;
+  long long             ref;
+  uint8_t*              name;
+  struct ir_framebox_t* frameboxes;
+  struct ir_simplex_t*  audio;
+  struct ir_link_t*     links;
+};
+/* Functions */
+static inline
+struct ir_framebox_t* ir_set_add_framebox(struct ir_set_t*,const uint8_t*);
+static inline
+union ir_setdata_t*   ir_framedata (enum dtype,const uint8_t*,apc_facing,int,int);
+static inline
+int      init_pagelist(struct pagelist_t*,size_t);
+static
+void     ir_free_pagenodes(struct pagenode_t*);
+static inline
+int      bytes_identical(const uint8_t*,const uint8_t*);
+static inline
+int      classnames_identical(const uint8_t*,const uint8_t*);
 static
-struct ir_class_t root_class = { .name = "." };
+void*    stack_alloc(size_t);
+#define  struct_alloc(_T) ((struct _T*) stack_alloc(sizeof(struct _T)))
+static
+uint8_t* name_alloc(const uint8_t*);
+static
+uint8_t* classname_alloc(const uint8_t*);
+extern //apc.c
+long     sys_pagesize;
+static
+struct pagelist_t datapages, namepages;
+static
+struct ir_class_t root_class = { .name = (uint8_t*)"." };
 
 /* Init */
 int ir_init
 ( void )
-{ pagenode_root = calloc(struct pagenode_t*) calloc(PN_ALLOCSIZE);
-  if (pagenode_root == NULL)
+{ if (init_pagelist(&datapages, (size_t)DATA_PAGESIZE))
+    eprintf("Memory allocation error\n");
+  if (init_pagelist(&namepages, (size_t)NAME_PAGESIZE))
+    eprintf("Memory allocation error\n");
+  return 0;
+}
+
+static inline
+int init_pagelist
+( struct pagelist_t* pl,
+  size_t size
+)
+{ pl->pagesize = size;
+  pl->root = (struct pagenode_t*) calloc(size,1);
+  if (pl->root == NULL)
     return -1;
-  pagenode_root->head = pagenode_root->root;
-  pagenode_head = pagenode_root;
+  pl->root->header.head = pl->root->root;
+  pl->head = pl->root;
   return 0;
-} 
+}
 
 /* Quit/Cleanup
    Recursively clean pagenode linked list
 */
 void ir_quit
 ( void )
-{ ir_quit_r(pagenode_root); }
+{ ir_free_pagenodes(datapages.root);
+  ir_free_pagenodes(namepages.root);
+}
 
-static inline
-void ir_quit_r
+static
+void ir_free_pagenodes
 ( struct pagenode_t* pagenode )
-{ if (pagenode->next != NULL)
-    ir_quit_r(pagenode->next);
+{ if (pagenode->header.next != NULL)
+    ir_free_pagenodes(pagenode->header.next);
   free(pagenode);
 }
 
@@ -150,6 +186,11 @@ int ir_condenser
 ( void )
 { return 0; }
 
+/* Return the class's name string */
+uint8_t* ir_class_name
+( struct ir_class_t* class )
+{ return class->name; }
+
 /* Return a pointer to the root class */
 struct ir_class_t* ir_class_root
 ( void )
@@ -161,20 +202,28 @@ struct ir_class_t* ir_class_root
 */
 struct ir_class_t* ir_class_addchild
 ( struct ir_class_t* class,
-  uint8_t*           name
+  const uint8_t*     name
 )
 { struct ir_class_t* iter;
   if (class->nextchild == NULL)
-    return class->nextchild = struct_alloc(ir_class_t);
+    goto alloc;
   iter = class->nextchild;
+  if (iter->name == NULL)
+    eprintf("Null name pointer in class %p\n", iter);
+  if (name == NULL)
+    eprintf("Null child added to class %s\n", iter->name);
  check:
-  if (bytes_identical(iter->name, name))
+  if (classnames_identical(iter->name, name))
     return iter;
   if (iter->nextsib != NULL)
     { iter = iter->nextsib;
       goto check;
     }
-  return iter->nextsib = struct_alloc(ir_class_t);
+ alloc:
+  iter = struct_alloc(ir_class_t);
+  iter->nextsib = class->nextchild;
+  iter->name = classname_alloc(name);
+  return class->nextchild = iter;
 }
 
 /* Add a set to a class
@@ -183,12 +232,16 @@ struct ir_class_t* ir_class_addchild
 */
 struct ir_set_t* ir_class_addset
 ( struct ir_class_t* class,
-  uint8_t*           name
+  const uint8_t*     name
 )
 { struct ir_set_t* iter;
   if (class->root_set == NULL)
-    return class->root_set = struct_alloc(ir_set_t);
+    goto alloc;
   iter = class->root_set;
+  if (iter->name == NULL)
+    eprintf("Null name pointer in class %p\n", iter);
+  if (name == NULL)
+    eprintf("Null set added to class %U\n", iter->name);
  check:
   if (bytes_identical(iter->name, name))
     return iter;
@@ -196,7 +249,11 @@ struct ir_set_t* ir_class_addset
     { iter = iter->nextsib;
       goto check;
     }
-  return iter->nextsib = struct_alloc(ir_set_t);
+ alloc:
+  iter = struct_alloc(ir_set_t);
+  iter->nextsib = class->root_set;
+  iter->name = name_alloc(name);
+  return class->root_set = iter;
 }
 
 /* Add a set to a set
@@ -205,12 +262,16 @@ struct ir_set_t* ir_class_addset
 */
 struct ir_set_t* ir_set_addchild
 ( struct ir_set_t* set,
-  uint8_t*         name
+  const uint8_t*   name
 )
 { struct ir_set_t* iter;
   if (set->nextchild == NULL)
-    return set->nextchild = struct_alloc(ir_set_t);
+    goto alloc;
   iter = set->nextchild;
+  if (iter->name == NULL)
+    eprintf("Null name pointer in set %p\n", iter);
+  if (name == NULL)
+    eprintf("Null child added to set %s\n", iter->name);
  check:
   if (bytes_identical(iter->name, name))
     return iter;
@@ -218,7 +279,11 @@ struct ir_set_t* ir_set_addchild
     { iter = iter->nextsib;
       goto check;
     }
-  return iter->nextsib = struct_alloc(ir_set_t);
+ alloc:
+  iter = struct_alloc(ir_set_t);
+  iter->nextsib = set->nextchild;
+  iter->name = name_alloc(name);
+  return set->nextchild = iter;
 }
 
 /* Add a framebox to a set
@@ -228,20 +293,24 @@ struct ir_set_t* ir_set_addchild
 static inline
 struct ir_framebox_t* ir_set_add_framebox
 ( struct ir_set_t* set,
-  uint8_t*         name
+  const uint8_t*   name
 )
 { struct ir_framebox_t* iter;
   if (set->frameboxes == NULL)
-    return set->frameboxes = struct_alloc(ir_framebox_t);
+    goto alloc;
   iter = set->frameboxes;
  check:
-  if (bytes_identical(iter->header.name, name))
+  if (bytes_identical(iter->header.data_name, name))
     return iter;
   if (iter->header.nextsib != NULL)
-    { iter = iter->header.nextsib;
+    { iter = (struct ir_framebox_t*) iter->header.nextsib;
       goto check;
     }
-  return iter->header.nextsib = struct_alloc(ir_framebox_t);
+ alloc:
+  iter = struct_alloc(ir_framebox_t);
+  iter->header.nextsib = (union ir_setdata_t*) set->frameboxes;
+  iter->header.data_name = name_alloc(name);
+  return set->frameboxes = iter;
 }
 
 /* Match two null-terminated bytestrings
@@ -249,13 +318,28 @@ struct ir_framebox_t* ir_set_add_framebox
 */
 static inline
 int bytes_identical
-( uint8_t* stra,
-  uint8_t* strb
+( const uint8_t* stra,
+  const uint8_t* strb
 )
-{ while (*stra && *strb)
-    if (*stra++ != *strb++)
-      return 0;
-  return *stra == *strb;
+{ int ca, cb;
+  do {
+    ca = *stra++;
+    cb = *strb++;
+  } while (ca && ca != '_' && ca == cb);
+  return (ca == cb);
+}
+
+static inline
+int classnames_identical
+( const uint8_t* stra,
+  const uint8_t* strb
+)
+{ int ca, cb;
+  do {
+    ca = *stra++;
+    cb = *strb++;
+  } while (ca && ca == cb);
+  return (ca == cb);
 }
 
 /* Assign Setdata to Set
@@ -267,47 +351,42 @@ void ir_set_assign_data
 )
 { struct ir_framebox_t* framebox;
   struct ir_simplex_t*  simplex;
-  struct ir_link_t*     link;
   switch (setdata->header.type)
     { case FSDAT:
-	framebox = ir_set_add_framebox(set, setdata->header.name);
-	if (framebox->framesheets[setdata->framesheet.frameinfo.facing] != NULL)
+	framebox = ir_set_add_framebox(set, setdata->header.data_name);
+	if (framebox->framesheets[setdata->framesheet.frameinfo.facing].header.data_name != NULL)
 	  wprintf("Duplicate framesheet [%i] %s\n",
 		  setdata->framesheet.frameinfo.facing, setdata->header.data_name);
 	framebox->framesheets[setdata->framesheet.frameinfo.facing] = setdata->framesheet;
 	break;
       case MSDAT:
-	framebox = ir_set_add_framebox(set, setdata->header.name);
-	if (framebox->mapsheets[setdata->mapsheet.frameinfo.facing] != NULL)
+	framebox = ir_set_add_framebox(set, setdata->header.data_name);
+	if (framebox->mapsheets[setdata->mapsheet.frameinfo.facing].header.data_name != NULL)
 	  wprintf("Duplicate mapsheet [%i] %s\n",
 		  setdata->mapsheet.frameinfo.facing, setdata->header.data_name);
 	framebox->mapsheets[setdata->mapsheet.frameinfo.facing] = setdata->mapsheet;
 	break;
       case ADAT:
 	if (set->audio == NULL)
-	  { set->audio = &setdata->audio;
+	  { set->audio = (struct ir_simplex_t*) setdata;
 	    return;
 	  }
 	simplex = set->audio;
-	while (simplex->header.nextsib != NULL;)
+	while (simplex->header.nextsib != NULL)
 	  if (bytes_identical(simplex->header.data_name, setdata->header.data_name))
 	    { wprintf("Duplicate audio %s\n", setdata->header.data_name);
 	      *simplex = setdata->audio;
+	      //setdata is now a pointer to redundant, unused memory.
 	      return;
 	    }
 	  else
-	    simplex = simplex->header.nextsib;
-	simplex->header.nextsib = &setdata->audio;
+	    simplex = (struct ir_simplex_t*) simplex->header.nextsib;
+	setdata->audio.header.nextsib = (union ir_setdata_t*) set->audio;
+        set->audio = (struct ir_simplex_t*) setdata;
 	break;
       case LDAT:
-	if (set->links == NULL)
-	  { set->links = &setdata->link;
-	    return;
-	  }
-	link = set->links;
-	while (link->header.nextsib != NULL)
-	  link = link->header.nextsib;
-	link->header.nextsib = &setdata->link;
+	setdata->link.header.nextsib = (union ir_setdata_t*) set->links;
+	set->links = (struct ir_link_t*) setdata;
 	break;
       default:
 	fprintf(stderr, "Unknown setdata type %x\n", setdata->header.type);
@@ -316,92 +395,197 @@ void ir_set_assign_data
 }
 
 void ir_set_assign_ref
-( ir_set_t* set,
-  long long ref
+( struct ir_set_t* set,
+  long long        ref
 )
 { if (set->ref != 0)
-    wprintf("Ref override: 0x%x -> 0x%x for set %s\n",
-	    set->ref, ref, set->name);
+    wprintf("Ref override: 0x%lx -> 0x%lx for set %s\n",
+	    (long unsigned) set->ref, (long unsigned) ref, set->name);
   set->ref = ref;
   //TODO: reflist_add(set);
 }
 
 void ir_data_assign_path
 ( union ir_setdata_t* setdata,
-  uint8_t*            path
+  const uint8_t*      path
 )
-{ if (set->header.src_filename)
-    wprintf("Path override: %s -> %s for set %s\n",
-	    set->header.src_filename, path, set->name);
-  set->header.src_filename = path;
-  //TODO: internal strdup, not assign (= path;)
+{ if (path == NULL)
+    eprintf("Null path in data %s\n", setdata->header.data_name);
+  if (setdata->header.src_filename != NULL)
+    wprintf("Path override: %s -> %s for setdata %s\n",
+	    setdata->header.src_filename, path, setdata->header.data_name);
+  setdata->header.src_filename = name_alloc(path);
 }
 
-
-//TODO: Macro ir_framsheet and mapsheet?
 union ir_setdata_t* ir_framesheet
-( uint8_t* name,
-  apc_facing d,
-  int width,
-  int height
+( const uint8_t* name,
+  apc_facing     d,
+  int            width,
+  int            height
 )
-{ struct ir_framedata_t* framesheet = struct_alloc(ir_framedata_t);
-  framesheet->header->type = FSDAT;
-  framesheet->header.data_name = name;
-  framesheet->frameinfo.facing = d;
-  framesheet->frameinfo.w = width;
-  framesheet->frameinfo.h = height;
-  return (union ir_setdata_t*) framesheet; 
-}
+{ return ir_framedata(FSDAT, name, d, width, height); }
 
 union ir_setdata_t* ir_mapsheet
-( uint8_t* name,
-  apc_facing d,
-  int width,
-  int height,
+( const uint8_t* name,
+  apc_facing     d,
+  int            width,
+  int            height
+)
+{ return ir_framedata(MSDAT, name, d, width, height); }
+
+static inline
+union ir_setdata_t* ir_framedata
+( enum dtype     type,
+  const uint8_t* name,
+  apc_facing     d,
+  int            width,
+  int            height
 )
-{ struct ir_framedata_t* mapsheet = struct_alloc(ir_framedata_t);
-  mapsheet->header.type = MSDAT;
-  mapsheet->header.data_name = name;
-  mapsheet->frameinfo.facing = d;
-  mapsheet->frameinfo.w = width;
-  mapsheet->frameinfo.h = height;
-  return (union ir_setdata_t*) mapsheet;
+{ struct ir_framedata_t* framedata = struct_alloc(ir_framedata_t);
+  if (name == NULL)
+    eprintf("Null name in set allocation\n");
+  framedata->header.type = type;
+  framedata->header.data_name = name_alloc(name);
+  framedata->frameinfo.facing = d;
+  framedata->frameinfo.w = width;
+  framedata->frameinfo.h = height;
+  return (union ir_setdata_t*) framedata;
 }
 
 union ir_setdata_t* ir_audio
-( uint8_t* name )
+( const uint8_t* name )
 { struct ir_simplex_t* audio = struct_alloc(ir_simplex_t);
+  if (name == NULL)
+    eprintf("Null audio\n");
   audio->header.type = ADAT;
-  audio->header.data_name = name;
+  audio->header.data_name = name_alloc(name);
   return (union ir_setdata_t*) audio;
 }
 
 
-#define PN_ALLOCSIZE    (sys_pagesize)
-#define PN_HEADERSIZE() (sizeof(struct pagenode_t*) + sizeof(void*))
-#define PN_MEMSIZE()    (PN_ALLOCSIZE - PN_HEADERSIZE())
-#define PN_HEADSIZE()   (pagenode_head->head - pagenode_head->root)
-#define PN_HEADSPACE()  (PN_MEMSIZE() - PN_HEADSIZE())
-struct pagenode_t {
-  struct pagenode_t* next;
-  char*              head;
-  char               root[];
-}* pagenode_root, * pagenode_head;
+/* Create classld that points to a class */
+struct ir_classld_t* ir_classld_from_class
+( struct ir_class_t* class )
+{ struct ir_classld_t* classld;
+  if (class == NULL)
+    eprintf("Null class in classld\n");
+  classld = struct_alloc(ir_classld_t);
+  classld->root_class = class;
+  return classld;
+}
+
+struct ir_setld_t* ir_setld_from_ref
+( long long ref )
+{ struct ir_setld_t* setld;
+  setld = struct_alloc(ir_setld_t);
+  setld->ref = ref;
+  return setld;
+}
+
+struct ir_setld_t* ir_setld_from_classld
+( struct ir_classld_t* classld,
+  const uint8_t*       name
+)
+{ struct ir_setld_t* setld;
+  setld = struct_alloc(ir_setld_t);
+  setld->namelist = struct_alloc(ir_namelist_t);
+  setld->namelist_head = setld->namelist;
+  setld->namelist_head->name = name_alloc(name);
+  setld->classld = classld;
+  return setld; 
+}
+
+struct ir_setld_t* ir_setld_addchild
+( struct ir_setld_t* setld,
+  const uint8_t*     name
+)
+{ if (setld->namelist == NULL)
+    { setld->namelist = struct_alloc(ir_namelist_t);
+      setld->namelist_head = setld->namelist;
+    }
+  else
+    { setld->namelist_head->nextsib = struct_alloc(ir_namelist_t);
+      setld->namelist_head = setld->namelist_head->nextsib;
+    }
+  setld->namelist_head->name = name_alloc(name);
+  return setld;
+}
+
+union ir_setdata_t* ir_link
+( enum ltype         link_type,
+  struct ir_setld_t* setld,
+  const uint8_t*     name
+)
+{ struct ir_link_t* link;
+  link = struct_alloc(ir_link_t);
+  link->header.type = LDAT;
+  link->type = link_type; 
+  link->classld = setld->classld;
+  link->setld = setld;
+  if (link_type != OLINK && name != NULL)
+    link->header.data_name = name_alloc(name);
+  return (union ir_setdata_t*) link;
+}
 
 
 static
-void* stack_alloc(size_t bytes)
-{ if (!bytes)
-    { wprint("Attempting to allocate 0 bytes in stack_alloc");
-      return pagenode_head->head;
+void* stack_alloc
+( size_t bytes )
+{ if (!bytes) //valid behavior to attain current head
+    return datapages.head->header.head;
+  if (PL_HEADMEM(datapages) < bytes) 
+    { datapages.head->header.next = (struct pagenode_t*) calloc(datapages.pagesize,1);
+      if (datapages.head->header.next == NULL)
+	eprintf("Memory allocation error \n");
+      datapages.head = datapages.head->header.next; 
+      datapages.head->header.head = datapages.head->root;
     }
-  if (PN_HEADSPACE() < bytes) 
-    { pagenode_head->next = (struct pagenode_t*) calloc(PN_ALLOCSIZE);
-      pagenode_head = pagenode_head->next;
-      pagenode_head->head = pagenode_head->root;
+  datapages.head->header.head += bytes;
+  return (void*) datapages.head->header.head - bytes;
+}
+
+static
+uint8_t* name_alloc
+( const uint8_t* name_src )
+{ const uint8_t* iter;
+  uint8_t*       name;
+  int            head_mem;
+ copy:
+  name = (uint8_t*)namepages.head->header.head;
+  iter = name_src;
+  for (head_mem = PL_HEADMEM(namepages); *iter && *iter != '_' && head_mem; head_mem--)
+    *(namepages.head->header.head)++ = *iter++;
+  if (head_mem == 0) //not enough room
+    { namepages.head->header.next = (struct pagenode_t*) calloc(namepages.pagesize,1);
+      if (namepages.head->header.next == NULL)
+	eprintf("Memory allocation error\n");
+      namepages.head = namepages.head->header.next;
+      namepages.head->header.head = namepages.head->root;
+      goto copy;
     }
-  pagenode_head->head += bytes;
-  return (void*) pagenode_head->head - bytes;
+  *(namepages.head->header.head)++ = '\0';
+  return name;
 }
 
+static
+uint8_t* classname_alloc
+( const uint8_t* name_src )
+{ const uint8_t* iter;
+  uint8_t*       name;
+  int            head_mem;
+ copy:
+  name = (uint8_t*)namepages.head->header.head;
+  iter = name_src;
+  for (head_mem = PL_HEADMEM(namepages); *iter && head_mem; head_mem--)
+    *(namepages.head->header.head)++ = *iter++;
+  if (head_mem == 0) //not enough room
+    { namepages.head->header.next = (struct pagenode_t*) calloc(namepages.pagesize,1);
+      if (namepages.head->header.next == NULL)
+	eprintf("Memory allocation error\n");
+      namepages.head = namepages.head->header.next;
+      namepages.head->header.head = namepages.head->root;
+      goto copy;
+    }
+  *(namepages.head->header.head)++ = '\0';
+  return name;
+}