Add binary reading and by-line reading to filerd

include/raii/binary.hpp

@@ -40,6 +40,8 @@ namespace raii{
 		constexpr binary_base(void) = default;
 		constexpr binary_base(char* data, size_t size):
 			m_data(data), m_cap(size){}
+		constexpr binary_base(char* data, size_t cap, size_t size):
+			m_data(data), m_size(size), m_cap(cap){}
 		template<class Allocator>
 		binary_base(const binary_base& b):
 			m_data(Allocator::copy(b.m_data, b.m_cap)),
@@ -70,6 +72,8 @@ namespace raii{
 		constexpr binary_data(void) = default;
 		binary_data(char* data, size_t size):
 			binary_base(reinterpret_cast<char*>(Allocator::copy(data, size)), size){}
+		binary_data(char* data, size_t cap, size_t size):
+			binary_base(reinterpret_cast<char*>(Allocator::copy(data, size)), cap, size){}
 		binary_data(size_t size):
 			binary_base(reinterpret_cast<char*>(Allocator::allocate(size)), size){}
 		binary_data(const binary_data& b):

include/raii/filerd.hpp

@@ -23,6 +23,7 @@
 #include <cstddef> //size_t
 
 #include "raii/string.hpp"
+#include "raii/binary.hpp"
 
 namespace raii{
 
@@ -55,6 +56,8 @@ namespace raii{
 
 		size_t read(char* dest, size_t bytes);
 		raii::string read(size_t bytes);
+		raii::string readln(size_t max = 0);
+		raii::binary read_bin(size_t bytes);
 
 		size_t write(const char* c, size_t bytes);
 		size_t write(const raii::string_base&);

src/raii/filerd.cpp

@@ -85,6 +85,22 @@ namespace raii{
 		size_t written = read(tmp, bytes);
 		return raii::string(tmp, written);
 	}
+	raii::string filerd::readln(size_t max){
+		raii::string ret;
+		char c;
+		size_t count = 0;
+		for(c = fgetc(m_fp);c != EOF && c != '\n';c = fgetc(m_fp)){
+			ret.append(&c, 1);
+			if(++count == max)
+				break;
+		}
+		return ret;
+	}
+	raii::binary filerd::read_bin(size_t bytes){
+		char* tmp = reinterpret_cast<char*>(raii::binary::allocator_type::allocate(bytes));
+		size_t written = read(tmp, bytes);
+		return raii::binary(tmp, written, written);
+	}
 	size_t filerd::write(const char* c, size_t bytes){
 		return fwrite(c, 1, bytes, m_fp);
 	}