2024年06月09日 1.0.5 优化参数下发的DBF文件中文乱码问题
gaoshuguang
1 year ago
parent
31fcd8c8cf
commit
e3ed4be52c
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//
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// Source code recreated from a .class file by IntelliJ IDEA
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// (powered by FernFlower decompiler)
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//
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package com.linuxense.javadbf;
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import java.io.DataInput;
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import java.io.DataOutput;
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import java.io.IOException;
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import java.nio.charset.Charset;
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import java.util.ArrayList;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.List;
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public class DBFHeader {
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public static final byte SIG_DBASE_III = 3;
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private byte signature = 3;
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private byte year;
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private byte month;
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private byte day;
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int numberOfRecords;
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short headerLength;
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short recordLength;
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private short reserv1;
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private byte incompleteTransaction;
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private byte encryptionFlag;
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private int freeRecordThread;
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private int reserv2;
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private int reserv3;
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private byte mdxFlag;
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private byte languageDriver;
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private short reserv4;
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DBFField[] fieldArray;
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DBFField[] userFieldArray;
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private byte terminator1 = 13;
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private Charset detectedCharset;
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private Charset usedCharset;
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private boolean supportExtendedCharacterFields = true;
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private static final int DBASE_LEVEL_7 = 4;
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protected DBFHeader() {
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}
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void read(DataInput dataInput, Charset charset, boolean showDeletedRows) throws IOException {
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this.signature = dataInput.readByte();
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this.year = dataInput.readByte();
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this.month = dataInput.readByte();
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this.day = dataInput.readByte();
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this.numberOfRecords = DBFUtils.readLittleEndianInt(dataInput);
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this.headerLength = DBFUtils.readLittleEndianShort(dataInput);
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this.recordLength = DBFUtils.readLittleEndianShort(dataInput);
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this.reserv1 = DBFUtils.readLittleEndianShort(dataInput);
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this.incompleteTransaction = dataInput.readByte();
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this.encryptionFlag = dataInput.readByte();
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this.freeRecordThread = DBFUtils.readLittleEndianInt(dataInput);
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this.reserv2 = dataInput.readInt();
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this.reserv3 = dataInput.readInt();
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this.mdxFlag = dataInput.readByte();
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this.languageDriver = dataInput.readByte();
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this.reserv4 = DBFUtils.readLittleEndianShort(dataInput);
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this.detectedCharset = DBFCharsetHelper.getCharsetByByte(this.languageDriver);
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int read = 32;
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if (this.isDB7()) {
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byte[] languageName = new byte[32];
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dataInput.readFully(languageName);
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dataInput.readInt();
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read += 36;
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}
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List<DBFField> v_fields = new ArrayList();
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this.usedCharset = this.detectedCharset;
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if (charset != null) {
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this.usedCharset = charset;
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}
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if (this.usedCharset == null) {
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this.usedCharset = DBFStandardCharsets.ISO_8859_1;
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}
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if (this.isDB7()) {
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while(read <= this.headerLength - 48) {
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DBFField field = DBFField.createFieldDB7(dataInput, this.usedCharset, this.supportExtendedCharacterFields);
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if (field == null) {
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++read;
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break;
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}
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v_fields.add(field);
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read += 48;
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}
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} else {
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for(boolean useFieldFlags = this.supportsFieldFlags(); read <= this.headerLength - 32; read += 32) {
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DBFField field = DBFField.createField(dataInput, this.usedCharset, useFieldFlags, this.supportExtendedCharacterFields);
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if (field == null) {
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++read;
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break;
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}
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v_fields.add(field);
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}
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}
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int skip = this.headerLength - read;
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DBFUtils.skipDataInput(dataInput, skip);
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this.fieldArray = (DBFField[])v_fields.toArray(new DBFField[v_fields.size()]);
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List<DBFField> userFields = new ArrayList();
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if (showDeletedRows) {
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DBFField deletedField = new DBFField("deleted", DBFDataType.LOGICAL);
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userFields.add(deletedField);
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}
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DBFField[] var16 = this.fieldArray;
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int var9 = var16.length;
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for(int var10 = 0; var10 < var9; ++var10) {
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DBFField field1 = var16[var10];
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if (!field1.isSystem() && field1.getType() != DBFDataType.NULL_FLAGS) {
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userFields.add(field1);
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}
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}
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this.userFieldArray = (DBFField[])userFields.toArray(new DBFField[userFields.size()]);
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}
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private boolean supportsFieldFlags() {
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return this.signature == 2 || this.signature == 48 || this.signature == 49 || this.signature == -11 || this.signature == -5;
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}
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int getTableHeaderSize() {
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return this.isDB7() ? 68 : 32;
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}
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int getFieldDescriptorSize() {
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return this.isDB7() ? 48 : 32;
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}
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private boolean isDB7() {
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return (this.signature & 7) == 4;
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}
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void write(DataOutput dataOutput) throws IOException {
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dataOutput.writeByte(this.signature);
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Calendar calendar = Calendar.getInstance();
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this.year = (byte)(calendar.get(1) - 1900);
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this.month = (byte)(calendar.get(2) + 1);
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this.day = (byte)calendar.get(5);
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dataOutput.writeByte(this.year);
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dataOutput.writeByte(this.month);
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dataOutput.writeByte(this.day);
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this.numberOfRecords = DBFUtils.littleEndian(this.numberOfRecords);
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dataOutput.writeInt(this.numberOfRecords);
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short oldHeaderLength = this.headerLength;
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short newHeaderLength = this.findHeaderLength();
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if (oldHeaderLength == 0) {
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this.headerLength = newHeaderLength;
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} else if (newHeaderLength > oldHeaderLength) {
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throw new DBFException("Invalid header length");
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}
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dataOutput.writeShort(DBFUtils.littleEndian(this.headerLength));
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this.recordLength = this.sumUpLenghtOfFields();
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dataOutput.writeShort(DBFUtils.littleEndian(this.recordLength));
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dataOutput.writeShort(DBFUtils.littleEndian(this.reserv1));
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dataOutput.writeByte(this.incompleteTransaction);
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dataOutput.writeByte(this.encryptionFlag);
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dataOutput.writeInt(DBFUtils.littleEndian(this.freeRecordThread));
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dataOutput.writeInt(DBFUtils.littleEndian(this.reserv2));
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dataOutput.writeInt(DBFUtils.littleEndian(this.reserv3));
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dataOutput.writeByte(this.mdxFlag);
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//if (this.languageDriver != 0) {
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// dataOutput.writeByte(this.languageDriver);
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//} else if (this.getUsedCharset() != null) {
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// dataOutput.writeByte(DBFCharsetHelper.getDBFCodeForCharset(this.getUsedCharset()));
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//} else {
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dataOutput.writeByte(0);
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//}
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dataOutput.writeShort(DBFUtils.littleEndian(this.reserv4));
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DBFField[] var5 = this.fieldArray;
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int var6 = var5.length;
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for(int var7 = 0; var7 < var6; ++var7) {
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DBFField field = var5[var7];
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field.write(dataOutput, this.getUsedCharset());
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}
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dataOutput.writeByte(this.terminator1);
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}
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private short findHeaderLength() {
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return (short)(32 + 32 * this.fieldArray.length + 1);
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}
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private short sumUpLenghtOfFields() {
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int sum = 0;
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DBFField[] var2 = this.fieldArray;
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int var3 = var2.length;
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for(int var4 = 0; var4 < var3; ++var4) {
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DBFField field = var2[var4];
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sum += field.getLength();
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}
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return (short)(sum + 1);
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}
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public int getYear() {
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return 1900 + this.year;
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}
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public int getMonth() {
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return this.month;
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}
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public int getDay() {
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return this.day;
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}
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public Date getLastModificationDate() {
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if (this.year != 0 && this.month != 0 && this.day != 0) {
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try {
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Calendar calendar = Calendar.getInstance();
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calendar.set(this.year, this.month, this.day, 0, 0, 0);
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calendar.set(14, 0);
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return calendar.getTime();
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} catch (Exception var2) {
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return null;
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}
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} else {
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return null;
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}
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}
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protected Charset getDetectedCharset() {
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return this.detectedCharset;
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}
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protected Charset getUsedCharset() {
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return this.usedCharset;
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}
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protected void setUsedCharset(Charset charset) {
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this.usedCharset = charset;
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}
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public void setSupportExtendedCharacterFields(boolean supportExtendedCharacterFields) {
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this.supportExtendedCharacterFields = supportExtendedCharacterFields;
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}
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}
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<!DOCTYPE html>
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<!--<html lang="en" class="dark">-->
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<html lang="en" class="light">
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<head>
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<meta charset="UTF-8"/>
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<title></title>
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<script type="module" crossorigin src="./assets/index.0fd88e87.js"></script>
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<link rel="stylesheet" href="./assets/index.d94d690a.css">
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</head>
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<body>
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<div id="app">
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<div class="loading">
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<div class="loading-wrap">
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<div class="loading-dots">
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<span class="dot dot-spin">
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<i></i>
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<i></i>
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<i></i>
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<i></i>
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</span>
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</div>
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<div class="loading-title">
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正在缓冲...
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</div>
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</div>
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</div>
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</div>
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</body>
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</html>
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<!DOCTYPE html>
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<!--<html lang="en" class="dark">-->
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<html lang="en" class="light">
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<head>
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<meta charset="UTF-8"/>
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<title></title>
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<script type="module" crossorigin src="./assets/index.0fd88e87.js"></script>
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<link rel="stylesheet" href="./assets/index.d94d690a.css">
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</head>
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<body>
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<div id="app">
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<div class="loading">
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<div class="loading-wrap">
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<div class="loading-dots">
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<span class="dot dot-spin">
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<i></i>
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<i></i>
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<i></i>
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<i></i>
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</span>
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</div>
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<div class="loading-title">
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正在缓冲...
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</div>
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</div>
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</div>
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</div>
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</body>
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</html>
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@ -1,17 +1,29 @@
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<!DOCTYPE html>
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<html lang="en">
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<!--<html lang="en" class="dark">-->
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<html lang="en" class="light">
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<head>
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<meta charset="UTF-8"/>
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<link rel="icon" href="./public/favicon.ico"/>
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<link rel="stylesheet" href="./src/util/css/loading.css">
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<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
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<title></title>
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</head>
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<body>
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<div id="app"></div>
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<script type="module" src="/src/main.js">
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</script>
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<div id="app">
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<div class="loading">
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<div class="loading-wrap">
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<div class="loading-dots">
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<span class="dot dot-spin">
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<i></i>
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<i></i>
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<i></i>
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<i></i>
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</span>
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</div>
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<div class="loading-title">
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正在缓冲...
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</div>
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</div>
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</div>
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</div>
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<script type="module" src="/src/main.js"></script>
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</body>
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</html>
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