1 package template;
2 
3 import java.io.PrintStream;
4 
5 import fileIO.ByteFile;
6 import fileIO.ByteFile1;
7 import fileIO.ByteFile2;
8 import fileIO.ByteStreamWriter;
9 import fileIO.FileFormat;
10 import fileIO.ReadWrite;
11 import shared.Parse;
12 import shared.Parser;
13 import shared.PreParser;
14 import shared.Shared;
15 import shared.Timer;
16 import shared.Tools;
17 import structures.ByteBuilder;
18 
19 /**
20  * Reads a text file.
21  * Does something.
22  * @author Brian Bushnell
23  * @date April 9, 2020
24  *
25  */
26 public class A_SampleBasic2 {
27 
28 	/*--------------------------------------------------------------*/
29 	/*----------------        Initialization        ----------------*/
30 	/*--------------------------------------------------------------*/
31 
32 	/**
33 	 * Code entrance from the command line.
34 	 * @param args Command line arguments
35 	 */
main(String[] args)36 	public static void main(String[] args){
37 		//Start a timer immediately upon code entrance.
38 		Timer t=new Timer();
39 
40 		//Create an instance of this class
41 		A_SampleBasic2 x=new A_SampleBasic2(args);
42 
43 		//Run the object
44 		x.process(t);
45 
46 		//Close the print stream if it was redirected
47 		Shared.closeStream(x.outstream);
48 	}
49 
50 	/**
51 	 * Constructor.
52 	 * @param args Command line arguments
53 	 */
A_SampleBasic2(String[] args)54 	public A_SampleBasic2(String[] args){
55 
56 		{//Preparse block for help, config files, and outstream
57 			PreParser pp=new PreParser(args, /*getClass()*/null, false);
58 			args=pp.args;
59 			outstream=pp.outstream;
60 		}
61 
62 		//Set shared static variables prior to parsing
63 
64 		{//Parse the arguments
65 			final Parser parser=parse(args);
66 			parser.out1="stdout.txt";
67 			overwrite=parser.overwrite;
68 			append=parser.append;
69 
70 			out=parser.out1;
71 		}
72 
73 		checkFileExistence(); //Ensure files can be read and written
74 		checkStatics(); //Adjust file-related static fields as needed for this program
75 
76 		ffout=FileFormat.testOutput(out, FileFormat.TXT, null, true, overwrite, append, false);
77 	}
78 
79 	/*--------------------------------------------------------------*/
80 	/*----------------    Initialization Helpers    ----------------*/
81 	/*--------------------------------------------------------------*/
82 
83 	/** Parse arguments from the command line */
parse(String[] args)84 	private Parser parse(String[] args){
85 
86 		Parser parser=new Parser();
87 		for(int i=0; i<args.length; i++){
88 			String arg=args[i];
89 			String[] split=arg.split("=");
90 			String a=split[0].toLowerCase();
91 			String b=split.length>1 ? split[1] : null;
92 			if(b!=null && b.equalsIgnoreCase("null")){b=null;}
93 
94 			if(a.equals("verbose")){
95 				verbose=Parse.parseBoolean(b);
96 				ByteFile1.verbose=verbose;
97 				ByteFile2.verbose=verbose;
98 				ReadWrite.verbose=verbose;
99 			}else if(parser.parse(arg, a, b)){
100 				//do nothing
101 			}else{
102 				outstream.println("Unknown parameter "+args[i]);
103 				assert(false) : "Unknown parameter "+args[i];
104 				//				throw new RuntimeException("Unknown parameter "+args[i]);
105 			}
106 		}
107 
108 		return parser;
109 	}
110 
111 	/** Ensure files can be read and written */
checkFileExistence()112 	private void checkFileExistence(){
113 		//Ensure output files can be written
114 		if(!Tools.testOutputFiles(overwrite, append, false, out)){
115 			outstream.println((out==null)+", "+out);
116 			throw new RuntimeException("\n\noverwrite="+overwrite+"; Can't write to output file "+out+"\n");
117 		}
118 	}
119 
120 	/** Adjust file-related static fields as needed for this program */
checkStatics()121 	private static void checkStatics(){
122 		//Adjust the number of threads for input file reading
123 		if(!ByteFile.FORCE_MODE_BF1 && !ByteFile.FORCE_MODE_BF2 && Shared.threads()>2){
124 			ByteFile.FORCE_MODE_BF2=true;
125 		}
126 	}
127 
128 	/*--------------------------------------------------------------*/
129 	/*----------------         Outer Methods        ----------------*/
130 	/*--------------------------------------------------------------*/
131 
process(Timer t)132 	void process(Timer t){
133 
134 		ByteStreamWriter bsw=makeBSW(ffout);
135 
136 //		assert(false) : "Header goes here.";
137 		if(bsw!=null){
138 //			assert(false) : "Header goes here.";
139 		}
140 
141 		processInner(bsw);
142 
143 		if(bsw!=null){errorState|=bsw.poisonAndWait();}
144 
145 		t.stop();
146 
147 		outstream.println(Tools.timeLinesBytesProcessed(t, linesOut, bytesOut, 8));
148 		outstream.println();
149 
150 		if(errorState){
151 			throw new RuntimeException(getClass().getName()+" terminated in an error state; the output may be corrupt.");
152 		}
153 	}
154 
155 	/*--------------------------------------------------------------*/
156 	/*----------------         Inner Methods        ----------------*/
157 	/*--------------------------------------------------------------*/
158 
processInner(ByteStreamWriter bsw)159 	private void processInner(ByteStreamWriter bsw){
160 		ByteBuilder bb=new ByteBuilder();
161 
162 		for(long cycle=0; cycle<maxCycles; cycle++){
163 			doSomething(bsw, bb, cycle);
164 		}
165 	}
166 
makeBSW(FileFormat ff)167 	private static ByteStreamWriter makeBSW(FileFormat ff){
168 		if(ff==null){return null;}
169 		ByteStreamWriter bsw=new ByteStreamWriter(ff);
170 		bsw.start();
171 		return bsw;
172 	}
173 
doSomething(ByteStreamWriter bsw, ByteBuilder bb, long cycle)174 	private boolean doSomething(ByteStreamWriter bsw, ByteBuilder bb, long cycle){
175 
176 //		if(line.length>0){
177 //			linesProcessed++;
178 //			bytesProcessed+=(line.length+1);
179 //
180 //			if(true){
181 //				linesOut++;
182 //				bytesOut+=(line.length+1);
183 //				for(int i=0; i<line.length && line[i]!='\t'; i++){
184 //					bb.append(line[i]);
185 //				}
186 //				bb.nl();
187 //				bsw.print(bb.toBytes());
188 //				bb.clear();
189 //			}
190 //		}
191 //		line=bf.nextLine();
192 		return true;
193 	}
194 
195 	/*--------------------------------------------------------------*/
196 	/*----------------            Fields            ----------------*/
197 	/*--------------------------------------------------------------*/
198 
199 	private String out=null;
200 	private long maxCycles=100;
201 
202 	/*--------------------------------------------------------------*/
203 
204 	private long linesOut=0;
205 	private long bytesOut=0;
206 
207 	/*--------------------------------------------------------------*/
208 	/*----------------         Final Fields         ----------------*/
209 	/*--------------------------------------------------------------*/
210 
211 	private final FileFormat ffout;
212 
213 	/*--------------------------------------------------------------*/
214 	/*----------------        Common Fields         ----------------*/
215 	/*--------------------------------------------------------------*/
216 
217 	private PrintStream outstream=System.err;
218 	public static boolean verbose=false;
219 	public boolean errorState=false;
220 	private boolean overwrite=false;
221 	private boolean append=false;
222 
223 }
224