file-utils 0.1.5

Convenience wrappers for file I/O, mostly around binary operations.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149


use std::io;

use conversions::u::*;
use conversions::i::*;
use conversions::f::*;

pub trait Read
{
	// Conditional
	fn read_usize(&mut self)-> io::Result<usize>;
	fn read_isize(&mut self)-> io::Result<isize>;

	// 8-bit
	fn read_u8(&mut self)-> io::Result<u8>;
	fn read_i8(&mut self)-> io::Result<i8>;

	// 16-bit
	fn read_u16(&mut self)-> io::Result<u16>;
	fn read_i16(&mut self)-> io::Result<i16>;

	// 32-bit
	fn read_u32(&mut self)-> io::Result<u32>;
	fn read_i32(&mut self)-> io::Result<i32>;
	fn read_f32(&mut self)-> io::Result<f32>;

	// 64-bit
	fn read_u64(&mut self)-> io::Result<u64>;
	fn read_i64(&mut self)-> io::Result<i64>;
	fn read_f64(&mut self)-> io::Result<f64>;
}

impl<T> Read for T 
	where T: io::Read
{
	/*
		Based on architecture
	*/
	#[cfg(target_pointer_width = "64")]
	fn read_usize(&mut self)-> io::Result<usize>
	{
		let num = self.read_u64()?;
		Ok(num as usize)
	}

	#[cfg(target_pointer_width = "32")]
	fn read_usize(&mut self)-> io::Result<usize>
	{
		let num = self.read_u32()?;
		Ok(num as usize)
	}

	#[cfg(target_pointer_width = "64")]
	fn read_isize(&mut self) -> io::Result<isize>
	{
		let num = self.read_i64()?;
		Ok(num as isize)
	}

	#[cfg(target_pointer_width = "32")]
	fn read_isize(&mut self) -> io::Result<isize>
	{
		let num = self.read_i32()?;
		Ok(num as isize)
	}

	/*
		8-bit
	*/
	fn read_u8(&mut self)-> io::Result<u8>
	{
		let mut buf: [u8; 1] = [0; 1];
		self.read_exact(&mut buf)?;
		Ok(buf[0])
	}

	fn read_i8(&mut self)-> io::Result<i8>
	{
		let num = self.read_u8()?;
		Ok(num as i8)
	}

	/*
		16-bit
	*/
	fn read_u16(&mut self)-> io::Result<u16>
	{
		let mut buf: [u8; 2] = [0; 2];
		self.read_exact(&mut buf)?;
		Ok(bytes_to_u16(&buf))
	}

	fn read_i16(&mut self)-> io::Result<i16>
	{
		let mut buf: [u8; 2] = [0; 2];
		self.read_exact(&mut buf)?;
		Ok(bytes_to_i16(&buf))
	}

	/*
		32-bit
	*/
	fn read_u32(&mut self)-> io::Result<u32>
	{
		let mut buf: [u8; 4] = [0; 4];
		self.read_exact(&mut buf)?;
		Ok(bytes_to_u32(&buf))
	}

	fn read_i32(&mut self)-> io::Result<i32>
	{
		let mut buf: [u8; 4] = [0; 4];
		self.read_exact(&mut buf)?;
		Ok(bytes_to_i32(&buf))
	}

	fn read_f32(&mut self)-> io::Result<f32>
	{
		let mut buf: [u8; 4] = [0; 4];
		self.read_exact(&mut buf)?;
		Ok(bytes_to_f32(&buf))
	}

	/*
		64-bit
	*/
	fn read_u64(&mut self)-> io::Result<u64>
	{
		let mut buf: [u8; 8] = [0; 8];
		self.read_exact(&mut buf)?;
		Ok(bytes_to_u64(&buf))
	}

	fn read_i64(&mut self)-> io::Result<i64>
	{
		let mut buf: [u8; 8] = [0; 8];
		self.read_exact(&mut buf)?;
		Ok(bytes_to_i64(&buf))
	}

	fn read_f64(&mut self)-> io::Result<f64>
	{
		let mut buf: [u8; 8] = [0; 8];
		self.read_exact(&mut buf)?;
		Ok(bytes_to_f64(&buf))
	}
}