ocrm.bsky.social
the game where you go into mines and start crafting! but for consoles (forked directly from smartcmd's github)
1#include "stdafx.h"
2
3#include "InputOutputStream.h"
4
5//Creates ByteArrayInputStream that uses buf as its buffer array. The initial value of pos is offset and
6//the initial value of count is the minimum of offset+length and buf.length. The buffer array is not copied.
7//The buffer's mark is set to the specified offset.
8//Parameters:
9//buf - the input buffer.
10//offset - the offset in the buffer of the first byte to read.
11//length - the maximum number of bytes to read from the buffer.
12ByteArrayInputStream::ByteArrayInputStream(byteArray buf, unsigned int offset, unsigned int length)
13 : pos( offset ), count( min( offset+length, buf.length ) ), mark( offset )
14{
15 this->buf = buf;
16}
17
18//Creates a ByteArrayInputStream so that it uses buf as its buffer array. The buffer array is not copied.
19//The initial value of pos is 0 and the initial value of count is the length of buf.
20//Parameters:
21//buf - the input buffer.
22ByteArrayInputStream::ByteArrayInputStream(byteArray buf)
23 : pos( 0 ), count( buf.length ), mark( 0 )
24{
25 this->buf = buf;
26}
27
28//Reads the next byte of data from this input stream. The value byte is returned as an int in the range 0 to 255.
29//If no byte is available because the end of the stream has been reached, the value -1 is returned.
30//This read method cannot block.
31//Returns:
32//the next byte of data, or -1 if the end of the stream has been reached.
33int ByteArrayInputStream::read()
34{
35 if( pos >= count )
36 return -1;
37 else
38 return buf[pos++];
39}
40
41//Reads some number of bytes from the input stream and stores them into the buffer array b.
42//The number of bytes actually read is returned as an integer. This method blocks until input data is available,
43//end of file is detected, or an exception is thrown.
44//If the length of b is zero, then no bytes are read and 0 is returned; otherwise, there is an attempt to read at least one byte.
45//If no byte is available because the stream is at the end of the file, the value -1 is returned; otherwise,
46//at least one byte is read and stored into b.
47//
48//The first byte read is stored into element b[0], the next one into b[1], and so on. The number of bytes read is,
49//at most, equal to the length of b. Let k be the number of bytes actually read; these bytes will be stored in elements b[0] through b[k-1],
50//leaving elements b[k] through b[b.length-1] unaffected.
51//
52//The read(b) method for class InputStream has the same effect as:
53//
54// read(b, 0, b.length)
55//Parameters:
56//b - the buffer into which the data is read.
57//Returns:
58//the total number of bytes read into the buffer, or -1 is there is no more data because the end of the stream has been reached.
59int ByteArrayInputStream::read(byteArray b)
60{
61 return read( b, 0, b.length );
62}
63
64//Reads up to len bytes of data into an array of bytes from this input stream. If pos equals count,
65//then -1 is returned to indicate end of file. Otherwise, the number k of bytes read is equal to the smaller of len and count-pos.
66//If k is positive, then bytes buf[pos] through buf[pos+k-1] are copied into b[off] through b[off+k-1] in the manner
67//performed by System.arraycopy. The value k is added into pos and k is returned.
68//This read method cannot block.
69//Parameters:
70//b - the buffer into which the data is read.
71//off - the start offset in the destination array b
72//len - the maximum number of bytes read.
73//Returns:
74//the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.
75int ByteArrayInputStream::read(byteArray b, unsigned int offset, unsigned int length)
76{
77 if( pos == count )
78 return -1;
79
80 int k = min( length, count-pos );
81 XMemCpy( &b[offset], &buf[pos], k );
82 //std::copy( buf->data+pos, buf->data+pos+k, b->data + offset ); // Or this instead?
83
84 pos += k;
85
86 return k;
87}
88
89//Closing a ByteArrayInputStream has no effect.
90//The methods in this class can be called after the stream has been closed without generating an IOException.
91void ByteArrayInputStream::close()
92{
93 return;
94}
95
96//Skips n bytes of input from this input stream. Fewer bytes might be skipped if the end of the input stream is reached. The actual number k of bytes to be skipped is equal to the smaller of n and count-pos. The value k is added into pos and k is returned.
97//Overrides:
98//skip in class InputStream
99//Parameters:
100//n - the number of bytes to be skipped.
101//Returns:
102//the actual number of bytes skipped.
103__int64 ByteArrayInputStream::skip(__int64 n)
104{
105 int newPos = pos + n;
106
107 if(newPos > count) newPos = count;
108
109 int k = newPos - pos;
110 pos = newPos;
111
112 return k;
113}
114
115ByteArrayInputStream::~ByteArrayInputStream()
116{
117 if(buf.data != NULL) delete [] buf.data;
118}