9 #include <botan/data_src.h> 10 #include <botan/exceptn.h> 14 #if defined(BOTAN_TARGET_OS_HAS_FILESYSTEM) 33 return peek(&out, 1, 0);
41 uint8_t buf[64] = { 0 };
46 const size_t got = this->
read(buf, std::min(n,
sizeof(buf)));
62 size_t got = std::min<size_t>(m_source.size() - m_offset, length);
63 copy_mem(out, m_source.data() + m_offset, got);
70 return (n <= (m_source.size() - m_offset));
77 size_t peek_offset)
const 79 const size_t bytes_left = m_source.size() - m_offset;
80 if(peek_offset >= bytes_left)
return 0;
82 size_t got = std::min(bytes_left - peek_offset, length);
83 copy_mem(out, &m_source[m_offset + peek_offset], got);
92 return (m_offset == m_source.size());
114 const size_t got =
static_cast<size_t>(m_source.gcount());
121 const std::streampos orig_pos = m_source.tellg();
122 m_source.seekg(0, std::ios::end);
123 const size_t avail =
static_cast<size_t>(m_source.tellg() - orig_pos);
124 m_source.seekg(orig_pos);
134 throw Invalid_State(
"DataSource_Stream: Cannot peek when out of data");
144 got =
static_cast<size_t>(m_source.gcount());
152 got =
static_cast<size_t>(m_source.gcount());
157 m_source.seekg(m_total_read, std::ios::beg);
167 return (!m_source.good());
178 #if defined(BOTAN_TARGET_OS_HAS_FILESYSTEM) 186 m_source_memory(new
std::ifstream(path, use_binary ?
std::ios::binary :
std::ios::in)),
187 m_source(*m_source_memory),
202 const std::string& name) :
bool check_available(size_t n) override
size_t read(uint8_t[], size_t) override
size_t discard_next(size_t N)
const uint8_t * cast_char_ptr_to_uint8(const char *s)
std::string id() const override
virtual size_t peek(uint8_t out[], size_t length, size_t peek_offset) const BOTAN_WARN_UNUSED_RESULT=0
DataSource_Stream(std::istream &, const std::string &id="<std::istream>")
bool end_of_data() const override
virtual size_t read(uint8_t out[], size_t length) BOTAN_WARN_UNUSED_RESULT=0
void copy_mem(T *out, const T *in, size_t n)
size_t read_byte(uint8_t &out)
size_t peek_byte(uint8_t &out) const
const char * cast_uint8_ptr_to_char(const uint8_t *b)
bool end_of_data() const override
DataSource_Memory(const std::string &in)
size_t peek(uint8_t[], size_t, size_t) const override
std::vector< T, secure_allocator< T > > secure_vector
bool check_available(size_t n) override
size_t read(uint8_t[], size_t) override
size_t peek(uint8_t[], size_t, size_t) const override