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authorMike Buland <eichlan@xagasoft.com>2012-11-05 22:41:51 +0000
committerMike Buland <eichlan@xagasoft.com>2012-11-05 22:41:51 +0000
commitec05778d5718a7912e506764d443a78d6a6179e3 (patch)
tree78a9a01532180030c095acefc45763f07c14edb8 /src/stable/buffer.cpp
parentb20414ac1fe80a71a90601f4cd1767fa7014a9ba (diff)
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Diffstat (limited to 'src/stable/buffer.cpp')
-rw-r--r--src/stable/buffer.cpp250
1 files changed, 125 insertions, 125 deletions
diff --git a/src/stable/buffer.cpp b/src/stable/buffer.cpp
index 16c3e2f..c787499 100644
--- a/src/stable/buffer.cpp
+++ b/src/stable/buffer.cpp
@@ -8,26 +8,26 @@
8#include "bu/buffer.h" 8#include "bu/buffer.h"
9 9
10Bu::Buffer::Buffer( Bu::Stream &rNext, int iWhat, int iBufSize ) : 10Bu::Buffer::Buffer( Bu::Stream &rNext, int iWhat, int iBufSize ) :
11 Bu::Filter( rNext ), 11 Bu::Filter( rNext ),
12 sSoFar( 0 ), 12 sSoFar( 0 ),
13 iBufSize( iBufSize ), 13 iBufSize( iBufSize ),
14 sReadBuf( NULL ), 14 sReadBuf( NULL ),
15 sWriteBuf( NULL ), 15 sWriteBuf( NULL ),
16 iReadBufFill( 0 ), 16 iReadBufFill( 0 ),
17 iReadPos( 0 ), 17 iReadPos( 0 ),
18 iWriteBufFill( 0 ), 18 iWriteBufFill( 0 ),
19 iWritePos( 0 ), 19 iWritePos( 0 ),
20 iWhat( iWhat ) 20 iWhat( iWhat )
21{ 21{
22 sReadBuf = new char[iBufSize]; 22 sReadBuf = new char[iBufSize];
23 sWriteBuf = new char[iBufSize]; 23 sWriteBuf = new char[iBufSize];
24} 24}
25 25
26Bu::Buffer::~Buffer() 26Bu::Buffer::~Buffer()
27{ 27{
28 flush(); 28 flush();
29 delete[] sReadBuf; 29 delete[] sReadBuf;
30 delete[] sWriteBuf; 30 delete[] sWriteBuf;
31} 31}
32 32
33void Bu::Buffer::start() 33void Bu::Buffer::start()
@@ -36,135 +36,135 @@ void Bu::Buffer::start()
36 36
37Bu::size Bu::Buffer::stop() 37Bu::size Bu::Buffer::stop()
38{ 38{
39 flush(); 39 flush();
40 iReadBufFill = iReadPos = iWriteBufFill = iWritePos = 0; 40 iReadBufFill = iReadPos = iWriteBufFill = iWritePos = 0;
41 return sSoFar; 41 return sSoFar;
42} 42}
43 43
44void Bu::Buffer::fillReadBuf() 44void Bu::Buffer::fillReadBuf()
45{ 45{
46 if( iReadBufFill+iReadPos < iBufSize ) 46 if( iReadBufFill+iReadPos < iBufSize )
47 { 47 {
48 iReadBufFill += rNext.read( 48 iReadBufFill += rNext.read(
49 sReadBuf+iReadPos+iReadBufFill, 49 sReadBuf+iReadPos+iReadBufFill,
50 iBufSize-iReadBufFill-iReadPos 50 iBufSize-iReadBufFill-iReadPos
51 ); 51 );
52 } 52 }
53} 53}
54 54
55Bu::size Bu::Buffer::read( void *pBuf, Bu::size nBytes ) 55Bu::size Bu::Buffer::read( void *pBuf, Bu::size nBytes )
56{ 56{
57 if( (iWhat&Read) == 0 ) 57 if( (iWhat&Read) == 0 )
58 return rNext.read( pBuf, nBytes ); 58 return rNext.read( pBuf, nBytes );
59 59
60 if( nBytes <= 0 ) 60 if( nBytes <= 0 )
61 { 61 {
62 fillReadBuf(); 62 fillReadBuf();
63 return 0; 63 return 0;
64 } 64 }
65 65
66 Bu::size nTotRead = 0; 66 Bu::size nTotRead = 0;
67// fillReadBuf(); 67// fillReadBuf();
68 68
69 do 69 do
70 { 70 {
71 int iAmnt = nBytes-nTotRead; 71 int iAmnt = nBytes-nTotRead;
72 if( iAmnt > iReadBufFill ) 72 if( iAmnt > iReadBufFill )
73 { 73 {
74 iAmnt = iReadBufFill; 74 iAmnt = iReadBufFill;
75 } 75 }
76 if( iAmnt > 0 ) 76 if( iAmnt > 0 )
77 { 77 {
78 memcpy( ((char *)pBuf)+nTotRead, sReadBuf+iReadPos, iAmnt ); 78 memcpy( ((char *)pBuf)+nTotRead, sReadBuf+iReadPos, iAmnt );
79 iReadPos += iAmnt; 79 iReadPos += iAmnt;
80 nTotRead += iAmnt; 80 nTotRead += iAmnt;
81 iReadBufFill -= iAmnt; 81 iReadBufFill -= iAmnt;
82 } 82 }
83 if( iReadBufFill == 0 ) 83 if( iReadBufFill == 0 )
84 { 84 {
85 iReadPos = 0; 85 iReadPos = 0;
86 fillReadBuf(); 86 fillReadBuf();
87 } 87 }
88 } 88 }
89 while( nTotRead < nBytes && iReadBufFill > 0 ); 89 while( nTotRead < nBytes && iReadBufFill > 0 );
90 90
91 //printf("Buffer: %db returned, %db remain in buffer.\n", nTotRead, iReadBufFill ); 91 //printf("Buffer: %db returned, %db remain in buffer.\n", nTotRead, iReadBufFill );
92 92
93 return nTotRead; 93 return nTotRead;
94} 94}
95 95
96Bu::size Bu::Buffer::write( const void *pBuf, Bu::size nBytes ) 96Bu::size Bu::Buffer::write( const void *pBuf, Bu::size nBytes )
97{ 97{
98 if( (iWhat&Write) == 0 ) 98 if( (iWhat&Write) == 0 )
99 return rNext.write( pBuf, nBytes ); 99 return rNext.write( pBuf, nBytes );
100 100
101 Bu::size nTotWrote = 0; 101 Bu::size nTotWrote = 0;
102 102
103 do 103 do
104 { 104 {
105 int iAmnt = nBytes-nTotWrote; 105 int iAmnt = nBytes-nTotWrote;
106 if( iAmnt > iBufSize-iWritePos-iWriteBufFill ) 106 if( iAmnt > iBufSize-iWritePos-iWriteBufFill )
107 { 107 {
108 iAmnt = iBufSize-iWritePos-iWriteBufFill; 108 iAmnt = iBufSize-iWritePos-iWriteBufFill;
109 } 109 }
110 if( iAmnt > 0 ) 110 if( iAmnt > 0 )
111 { 111 {
112 memcpy( 112 memcpy(
113 sWriteBuf+iWritePos+iWriteBufFill, 113 sWriteBuf+iWritePos+iWriteBufFill,
114 ((char *)pBuf)+nTotWrote, 114 ((char *)pBuf)+nTotWrote,
115 iAmnt 115 iAmnt
116 ); 116 );
117 nTotWrote += iAmnt; 117 nTotWrote += iAmnt;
118 iWriteBufFill += iAmnt; 118 iWriteBufFill += iAmnt;
119 //printf("Buffer: Moved %db to write buffer, %db filled now.\n", 119 //printf("Buffer: Moved %db to write buffer, %db filled now.\n",
120 //iAmnt, iWriteBufFill ); 120 //iAmnt, iWriteBufFill );
121 } 121 }
122 while( iWritePos+iWriteBufFill == iBufSize ) 122 while( iWritePos+iWriteBufFill == iBufSize )
123 { 123 {
124 //printf("iWritePos = %d\n", iWritePos ); 124 //printf("iWritePos = %d\n", iWritePos );
125 int iWr = rNext.write( sWriteBuf+iWritePos, iWriteBufFill ); 125 int iWr = rNext.write( sWriteBuf+iWritePos, iWriteBufFill );
126 //printf("Buffer: Wrote %db from buffer to stream, %db filled now.\n", iWr, iWriteBufFill-iWr ); 126 //printf("Buffer: Wrote %db from buffer to stream, %db filled now.\n", iWr, iWriteBufFill-iWr );
127 if( iWr == 0 ) 127 if( iWr == 0 )
128 { 128 {
129 return nTotWrote; 129 return nTotWrote;
130 } 130 }
131 else if( iWr == iWriteBufFill ) 131 else if( iWr == iWriteBufFill )
132 { 132 {
133 iWritePos = iWriteBufFill = 0; 133 iWritePos = iWriteBufFill = 0;
134 } 134 }
135 else 135 else
136 { 136 {
137 iWritePos += iWr; 137 iWritePos += iWr;
138 iWriteBufFill -= iWr; 138 iWriteBufFill -= iWr;
139 } 139 }
140 } 140 }
141 } 141 }
142 while( nTotWrote < nBytes && iWriteBufFill < iBufSize+iWritePos ); 142 while( nTotWrote < nBytes && iWriteBufFill < iBufSize+iWritePos );
143 143
144 return nTotWrote; 144 return nTotWrote;
145} 145}
146 146
147void Bu::Buffer::flush() 147void Bu::Buffer::flush()
148{ 148{
149 if( (iWhat&Write) == 0 ) 149 if( (iWhat&Write) == 0 )
150 return rNext.flush(); 150 return rNext.flush();
151 151
152 if( iWriteBufFill > 0 ) 152 if( iWriteBufFill > 0 )
153 { 153 {
154 //printf("Buffer: Flushing remaining data, %db.\n", iWriteBufFill ); 154 //printf("Buffer: Flushing remaining data, %db.\n", iWriteBufFill );
155 int iWr = 0; 155 int iWr = 0;
156 do 156 do
157 { 157 {
158 iWr = rNext.write( sWriteBuf+iWritePos, iWriteBufFill ); 158 iWr = rNext.write( sWriteBuf+iWritePos, iWriteBufFill );
159 //printf("Buffer: %db written to stream.\n", iWr ); 159 //printf("Buffer: %db written to stream.\n", iWr );
160 iWritePos += iWr; 160 iWritePos += iWr;
161 iWriteBufFill -= iWr; 161 iWriteBufFill -= iWr;
162 } while( iWriteBufFill > 0 && iWr > 0 ); 162 } while( iWriteBufFill > 0 && iWr > 0 );
163 } 163 }
164} 164}
165 165
166bool Bu::Buffer::isEos() 166bool Bu::Buffer::isEos()
167{ 167{
168 return (iReadPos >= (iReadBufFill-1)) && (rNext.isEos()); 168 return (iReadPos >= (iReadBufFill-1)) && (rNext.isEos());
169} 169}
170 170
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