lib/as3/import.c

   1 /* import.c
   2
   3    Extension module for the rfxswf library.
   4    Part of the swftools package.
   5
   6    Copyright (c) 2009 Matthias Kramm <kramm@quiss.org>
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  21
  22 #include "import.h"
  23 #include "abc.h"
  24 #include "registry.h"
  25 #include "../os.h"
  26
  27 void as3_import_abc(char*filename)
  28 {
  29     TAG*tag = swf_InsertTag(0, ST_RAWABC);
  30     memfile_t*file = memfile_open(filename);
  31     tag->data = file->data;
  32     tag->len = file->len;
  33     abc_file_t*abc = swf_ReadABC(tag);
  34     as3_import_code(abc);
  35     swf_FreeABC(abc);
  36     memfile_close(file);
  37     free(tag);
  38 }
  39
  40 void as3_import_swf(char*filename)
  41 {
  42     SWF* swf = swf_OpenSWF(filename);
  43     if(!swf)
  44         return;
  45     TAG*tag = swf->firstTag;
  46     while(tag) {
  47         if(tag->id == ST_DOABC || tag->id == ST_RAWABC) {
  48             abc_file_t*abc = swf_ReadABC(tag);
  49             as3_import_code(abc);
  50             swf_FreeABC(abc);
  51         }
  52         tag = tag->next;
  53     }
  54     swf_FreeTags(swf);
  55     free(swf);
  56 }
  57
  58 static int compare_traits(const void*v1, const void*v2)
  59 {
  60     trait_t* x1 = *(trait_t**)v1;
  61     trait_t* x2 = *(trait_t**)v2;
  62     int i = strcmp(x1->name->ns->name, x2->name->ns->name);
  63     if(i)
  64         return i;
  65     return strcmp(x1->name->name, x2->name->name);
  66 }
  67
  68
  69 void as3_import_code(abc_file_t*abc)
  70 {
  71     int t;
  72     for(t=0;t<abc->classes->num;t++) {
  73         abc_class_t*cls = array_getvalue(abc->classes, t);
  74         U8 access = cls->classname->ns->access;
  75         if(access==ACCESS_PRIVATE ||
  76            access==ACCESS_PACKAGEINTERNAL)
  77             continue;
  78         if(!strncmp(cls->classname->ns->name, "__AS3", 5))
  79             continue;
  80
  81         const char*package = strdup(cls->classname->ns->name);
  82         const char*name = strdup(cls->classname->name);
  83
  84         multiname_list_t*i=cls->interfaces;
  85         classinfo_t*c = classinfo_register(access, package, name, list_length(i));
  86
  87         if(cls->flags & CLASS_FINAL)
  88             c->flags |= FLAG_FINAL;
  89         if(cls->flags & CLASS_INTERFACE)
  90             c->flags |= FLAG_INTERFACE;
  91         if(!(cls->flags & CLASS_SEALED))
  92             c->flags |= FLAG_DYNAMIC;
  93         /*
  94           FIXME
  95            int nr = 0;
  96         while(i) {
  97             c->interfaces[nr++] = i->multiname;
  98             i = i->next;
  99         }
 100         c->superclass = ...
 101
 102          */
 103
 104         trait_list_t*l=0;
 105         char is_static = 0;
 106         l = cls->traits;
 107         while(l) {
 108             trait_t*trait = l->trait;
 109             U8 access = trait->name->ns->access;
 110             if(access==ACCESS_PRIVATE)
 111                 goto cont;
 112             const char*name = trait->name->name;
 113             if(registry_findmember(c, name, 0))
 114                 goto cont;
 115             name = strdup(name);
 116
 117             memberinfo_t*s = 0;
 118             if(trait->kind == TRAIT_METHOD) {
 119                 s = (memberinfo_t*)methodinfo_register_onclass(c, access, name);
 120             } else if(trait->kind == TRAIT_SLOT ||
 121                       trait->kind == TRAIT_GETTER) {
 122                 s = (memberinfo_t*)varinfo_register_onclass(c, access, name);
 123             } else {
 124                 goto cont;
 125             }
 126             s->flags = is_static?FLAG_STATIC:0;
 127             s->parent = c;
 128
 129             cont:
 130             l = l->next;
 131             if(!l && !is_static) {
 132                 l = cls->static_traits;
 133                 is_static = 1;
 134             }
 135         }
 136     }
 137
 138 #   define IS_PUBLIC_MEMBER(trait) ((trait)->kind != TRAIT_CLASS)
 139
 140     /* count public functions */
 141     int num_methods=0;
 142     for(t=0;t<abc->scripts->num;t++) {
 143         trait_list_t*l = ((abc_script_t*)array_getvalue(abc->scripts, t))->traits;
 144         for(;l;l=l->next) {
 145             num_methods += IS_PUBLIC_MEMBER(l->trait);
 146         }
 147     }
 148     trait_t**traits = (trait_t**)malloc(num_methods*sizeof(trait_t*));
 149     num_methods=0;
 150     for(t=0;t<abc->scripts->num;t++) {
 151         trait_list_t*l = ((abc_script_t*)array_getvalue(abc->scripts, t))->traits;
 152         for(;l;l=l->next) {
 153             if(IS_PUBLIC_MEMBER(l->trait)) {
 154                 traits[num_methods++] = l->trait;
 155             }
 156         }
 157     }
 158     qsort(traits, num_methods, sizeof(trait_t*), compare_traits);
 159     for(t=0;t<num_methods;t++) {
 160         trait_t*trait = traits[t];
 161         if(IS_PUBLIC_MEMBER(trait)) {
 162             U8 access = trait->name->ns->access;
 163             const char*package = strdup(trait->name->ns->name);
 164             const char*name = strdup(trait->name->name);
 165             char np = 0;
 166             memberinfo_t*m = 0;
 167             if(trait->kind == TRAIT_METHOD) {
 168                 m = (memberinfo_t*)methodinfo_register_global(access, package, name);
 169             } else {
 170                 m = (memberinfo_t*)varinfo_register_global(access, package, name);
 171             }
 172             m->parent = 0;
 173         }
 174     }
 175 }