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 void as3_import_file(char*filename)
  59 {
  60     FILE*fi = fopen(filename, "rb");
  61     if(!fi) return;
  62     char head[3];
  63     fread(head, 3, 1, fi);
  64     fclose(fi);
  65     if(!strncmp(head, "FWS", 3) ||
  66        !strncmp(head, "FWC", 3))
  67         as3_import_swf(filename);
  68     else
  69         as3_import_abc(filename);
  70 }
  71
  72 static int compare_traits(const void*v1, const void*v2)
  73 {
  74     trait_t* x1 = *(trait_t**)v1;
  75     trait_t* x2 = *(trait_t**)v2;
  76     int i = strcmp(x1->name->ns->name, x2->name->ns->name);
  77     if(i)
  78         return i;
  79     return strcmp(x1->name->name, x2->name->name);
  80 }
  81
  82
  83 void as3_import_code(abc_file_t*abc)
  84 {
  85     int t;
  86     for(t=0;t<abc->classes->num;t++) {
  87         abc_class_t*cls = array_getvalue(abc->classes, t);
  88         U8 access = cls->classname->ns->access;
  89         if(access==ACCESS_PRIVATE ||
  90            access==ACCESS_PACKAGEINTERNAL)
  91             continue;
  92         if(!strncmp(cls->classname->ns->name, "__AS3", 5))
  93             continue;
  94
  95         const char*package = strdup(cls->classname->ns->name);
  96         const char*name = strdup(cls->classname->name);
  97
  98         multiname_list_t*i=cls->interfaces;
  99         classinfo_t*c = classinfo_register(access, package, name, list_length(i));
 100
 101         if(cls->flags & CLASS_FINAL)
 102             c->flags |= FLAG_FINAL;
 103         if(cls->flags & CLASS_INTERFACE)
 104             c->flags |= FLAG_INTERFACE;
 105         if(!(cls->flags & CLASS_SEALED))
 106             c->flags |= FLAG_DYNAMIC;
 107         /*
 108           FIXME
 109            int nr = 0;
 110         while(i) {
 111             c->interfaces[nr++] = i->multiname;
 112             i = i->next;
 113         }
 114         c->superclass = ...
 115
 116          */
 117
 118         trait_list_t*l=0;
 119         char is_static = 0;
 120         l = cls->traits;
 121         while(l) {
 122             trait_t*trait = l->trait;
 123             U8 access = trait->name->ns->access;
 124             if(access==ACCESS_PRIVATE)
 125                 goto cont;
 126             const char*name = trait->name->name;
 127             if(registry_findmember(c, name, 0))
 128                 goto cont;
 129             name = strdup(name);
 130
 131             memberinfo_t*s = 0;
 132             if(trait->kind == TRAIT_METHOD) {
 133                 s = (memberinfo_t*)methodinfo_register_onclass(c, access, name);
 134             } else if(trait->kind == TRAIT_SLOT ||
 135                       trait->kind == TRAIT_GETTER) {
 136                 s = (memberinfo_t*)varinfo_register_onclass(c, access, name);
 137             } else {
 138                 goto cont;
 139             }
 140
 141             s->flags = is_static?FLAG_STATIC:0;
 142             s->parent = c;
 143
 144             cont:
 145             l = l->next;
 146             if(!l && !is_static) {
 147                 l = cls->static_traits;
 148                 is_static = 1;
 149             }
 150         }
 151     }
 152
 153 #   define IS_PUBLIC_MEMBER(trait) ((trait)->kind != TRAIT_CLASS)
 154
 155     /* count public functions */
 156     int num_methods=0;
 157     for(t=0;t<abc->scripts->num;t++) {
 158         trait_list_t*l = ((abc_script_t*)array_getvalue(abc->scripts, t))->traits;
 159         for(;l;l=l->next) {
 160             num_methods += IS_PUBLIC_MEMBER(l->trait);
 161         }
 162     }
 163     trait_t**traits = (trait_t**)malloc(num_methods*sizeof(trait_t*));
 164     num_methods=0;
 165     for(t=0;t<abc->scripts->num;t++) {
 166         trait_list_t*l = ((abc_script_t*)array_getvalue(abc->scripts, t))->traits;
 167         for(;l;l=l->next) {
 168             if(IS_PUBLIC_MEMBER(l->trait)) {
 169                 traits[num_methods++] = l->trait;
 170             }
 171         }
 172     }
 173     qsort(traits, num_methods, sizeof(trait_t*), compare_traits);
 174     for(t=0;t<num_methods;t++) {
 175         trait_t*trait = traits[t];
 176         if(IS_PUBLIC_MEMBER(trait)) {
 177             U8 access = trait->name->ns->access;
 178             const char*package = strdup(trait->name->ns->name);
 179             const char*name = strdup(trait->name->name);
 180             char np = 0;
 181             memberinfo_t*m = 0;
 182             if(trait->kind == TRAIT_METHOD) {
 183                 m = (memberinfo_t*)methodinfo_register_global(access, package, name);
 184             } else {
 185                 m = (memberinfo_t*)varinfo_register_global(access, package, name);
 186             }
 187             m->return_type = 0;
 188             m->parent = 0;
 189         }
 190     }
 191 }