InputStream.java Source File (original) (raw)

00001 00002 00003 00004 00005 00006 00007 00008 00009 00010 00011 00012 00013 00014 00015 00016 00017 00018 00019 00020 00021 00022 00023 00024 00025 00026 00027 00028 00029 00030 00031 00032 00033 00034 00035 package org.hebe.mps; 00036 00037 import java.io.; 00038 import java.net.; 00039 00040 00041 00042 00043 00044 00045 00046 00047 00048 00049 public class InputStream { 00050 private Connection connection; 00051 private java.io.InputStream input; 00052 00053 00054 00055 00056 00057 00058 00059 public InputStream(Connection c) { 00060 connection = c; 00061 input = null; 00062 } 00063 00064 00065 00066 00067 00068 00069 00070 public InputStream(java.io.InputStream i) { 00071 connection = null; 00072 input = i; 00073 } 00074 00075 00076 00077 00078 00079 00080 00081 00082 private int read() throws IOException, MPSException { 00083 int result = input.read(); 00084 if (result < 0) 00085 throw new MPSConnectionClosedException("while reading"); 00086
00087 return result; 00088 } 00089 00090 00091 00092 00093 00094 00095 00096 00097 private void open() throws MPSException { 00098 if (input == null) 00099 input = connection.getInputStream(); 00100 } 00101 00102 00103 00104 00105 00106 00107 00108 public int readint() throws MPSException { 00109 try { 00110 int result = 0; 00111 open(); 00112 result = result | read(); 00113 result = (result << 8) | read(); 00114 result = (result << 8) | read(); 00115 result = (result << 8) | read(); 00116 return result; 00117 } catch (IOException e) { 00118 throw new MPSException("Error reading an int from remote end"); 00119 } 00120 } 00121 00122 00123 00124 00125 00126 00127 00128 00129 public String readstring() throws MPSException { 00130 StringBuffer result = new StringBuffer(); 00131 00132 try { 00133 char ch; 00134 00135 open(); 00136 while (true) { 00137 ch = (char) read(); 00138 if (ch == 0) 00139 break; 00140 00141 result.append(ch); 00142 } 00143 } catch (IOException e) { 00144 throw new MPSException("Error reading a string from remote end"); 00145 } 00146 00147 return result.toString(); 00148 } 00149 00150 00151 00152 00153 00154 00155 00156 public boolean readbool() throws MPSException { 00157 try { 00158 open(); 00159 return (read() != 0); 00160 } catch (IOException e) { 00161 throw new MPSException("Error reading a bool from remote end"); 00162 } 00163 } 00164 00165 00166 00167 00168 00169 00170 00171 public long readlong() throws MPSException { 00172 try { 00173 long result = 0; 00174 open(); 00175 result = result | read(); 00176 result = (result << 8) | read(); 00177 result = (result << 8) | read(); 00178 result = (result << 8) | read(); 00179 result = (result << 8) | read(); 00180 result = (result << 8) | read(); 00181 result = (result << 8) | read(); 00182 result = (result << 8) | read(); 00183 return result; 00184 } catch (IOException e) { 00185 throw new MPSException("Error reading a long from remote end"); 00186 } 00187 } 00188 00189 00190 00191 00192 00193 00194 00195 public char readchar() throws MPSException { 00196 try { 00197 open(); 00198 return (char) read(); 00199 } catch (IOException e) { 00200 throw new MPSException("Error reading a char from remote end"); 00201 } 00202 } 00203 00204 00205 00206 00207 00208 00209 00210 00211 00212 public String readReference() throws MPSException { 00213 return readstring(); 00214 } 00215 00216 00217 00218 00219 00220 00221 00222 public float readfloat() throws MPSException { 00223 open(); 00224 return Float.intBitsToFloat(readint()); 00225 } 00226 }