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Bug 651892 part 2 - Add a constructor to serializable that takes a buffer instead of an istream. r=tglek

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This commit is contained in:
Mike Hommey 2011-06-23 04:07:57 +02:00
parent 67da11fe96
commit 745c034862
1 changed files with 31 additions and 0 deletions
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31
build/unix/elfhack/elfxx.h
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@ -190,6 +190,37 @@ class serializable: public T::Type32 {
public:
serializable() {};
serializable(const typename T::Type32 &p): T::Type32(p) {};
private:
template <typename R>
void init(const char *buf, size_t len, char ei_data)
{
R e;
assert(len <= sizeof(e));
memcpy(&e, buf, sizeof(e));
if (ei_data == ELFDATA2LSB) {
T::template swap<little_endian>(e, *this);
return;
} else if (ei_data == ELFDATA2MSB) {
T::template swap<big_endian>(e, *this);
return;
}
throw std::runtime_error("Unsupported ELF data encoding");
}
public:
serializable(const char *buf, size_t len, char ei_class, char ei_data)
{
if (ei_class == ELFCLASS32) {
init<typename T::Type32>(buf, len, ei_data);
return;
} else if (ei_class == ELFCLASS64) {
init<typename T::Type64>(buf, len, ei_data);
return;
}
throw std::runtime_error("Unsupported ELF class");
}
serializable(std::ifstream &file, char ei_class, char ei_data)
{
if (ei_class == ELFCLASS32) {