src/library/fileimage-patch.cpp

   1 #include "fileimage-patch.hpp"
   2 #include "sha256.hpp"
   3 #include "string.hpp"
   4 #include <cstdint>
   5 #include <cstring>
   6 #include <iostream>
   7 #include <set>
   8
   9 namespace fileimage
  10 {
  11 namespace
  12 {
  13         std::set<patcher*>& patchers()
  14         {
  15                 static std::set<patcher*> t;
  16                 return t;
  17         }
  18 }
  19
  20 std::vector<char> patch(const std::vector<char>& original, const std::vector<char>& patch,
  21         int32_t offset) throw(std::bad_alloc, std::runtime_error)
  22 {
  23         std::vector<char> out;
  24         for(auto i : patchers())
  25                 if(i->identify(patch)) {
  26                         i->dopatch(out, original, patch, offset);
  27                         return out;
  28                 }
  29         throw std::runtime_error("Unknown patch file format");
  30 }
  31
  32 patcher::patcher() throw(std::bad_alloc)
  33 {
  34         patchers().insert(this);
  35 }
  36
  37 patcher::~patcher() throw()
  38 {
  39         patchers().erase(this);
  40 }
  41 }