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| package net.sf.ffo; |
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| import java.io.IOException; |
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| import java.io.Writer; |
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| import java.text.SimpleDateFormat; |
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| import java.util.Calendar; |
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| import org.apache.commons.lang.Validate; |
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| public class FixedFormatWritter { |
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| private final Writer writer; |
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| private String defaultCalendarFormat = "yyyyMMdd";; |
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| public FixedFormatWritter(final Writer writer) {
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| this.writer = writer;
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| } |
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| public void write(final Integer val, final int len) throws IOException {
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| Validate.notNull(val);
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| write(""+val, len, '0', true);
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| } |
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| public void write(final int val, final int len) throws IOException {
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| write(""+val, len, '0', true);
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| } |
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| public void write(final Long val, final int len) throws IOException {
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| Validate.notNull(val);
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| write(""+val, len, '0', true);
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| } |
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| public void write(final String val, final int len) throws IOException {
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| write(val, len, ' ', false);
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| } |
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| public void write(final String val, final int len, final char pad, final boolean alignRight) throws IOException {
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| Validate.notNull(val, "String val is null");
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| Validate.isTrue(len>0, "Negative or zero field length");
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| Validate.isTrue(val.length()<=len, "'"+val+"' does not fit a field of "+len+" bytes");
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| final StringBuffer chunk = new StringBuffer(len);
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| for (int i=0;i<len;i++)
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| chunk.append(pad);
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| if (alignRight) {
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| chunk.replace(chunk.length()-val.length(), chunk.length(), val);
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| } else { |
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| chunk.replace(0, val.length(), val);
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| } |
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| writer.write(chunk.toString());
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| } |
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| public void write(final Calendar cal) throws IOException {
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| internalWrite(defaultCalendarFormat, cal);
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| } |
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| private void internalWrite(final String fmt, final Calendar cal) throws IOException {
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| Validate.notNull(cal, "Calendar es null");
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| final SimpleDateFormat sdf = new SimpleDateFormat(fmt);
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| final String formated = sdf.format(cal.getTime());
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| writer.write(formated);
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| } |
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| public void write(final Double field, final int integerCount, final int decimalCount) throws IOException {
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| Validate.notNull(field, "field to write is null");
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| final String fmt = "%.0"+decimalCount+"f";
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| System.out.println("fmt: "+fmt);
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| final PrintfFormat pfmt = new PrintfFormat(fmt);
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| final String formatted = pfmt.sprintf(field.doubleValue());
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| final StringBuffer sb = new StringBuffer(formatted);
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| if (formatted.indexOf('.')>=0) {
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| sb.deleteCharAt(formatted.indexOf('.'));
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| } |
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| write(sb.toString(), decimalCount+integerCount, '0', true);
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| } |
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| public void write(final String fmt, final Calendar cal) throws IOException {
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| internalWrite(fmt, cal);
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| } |
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| public Writer getWriter() {
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| return this.writer;
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| } |
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| } |