mirror of
https://github.com/topjohnwu/jtar.git
synced 2024-11-23 03:19:41 +00:00
added name prefix, updated tar header and entry
This commit is contained in:
kamranzafar
parent
b509b362c1
commit
d8c5b6a9d2
@ -30,7 +30,7 @@ public class TarEntry {
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private TarEntry() {
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this.file = null;
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this.header = new TarHeader();
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header = new TarHeader();
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}
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public TarEntry(File file, String entryName) {
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@ -52,64 +52,67 @@ public class TarEntry {
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*
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* @param header
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*
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* @see TarHeader#createFileHeader(String, long, long)
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* @see TarHeader#createDirHeader(String, long)
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*/
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public TarEntry(TarHeader header) {
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this.file = null;
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this.header = header;
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}
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public TarEntry(TarHeader header) {
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this.file = null;
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this.header = header;
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}
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public boolean equals(TarEntry it) {
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return this.header.name.toString().equals(it.header.name.toString());
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return header.name.toString().equals(it.header.name.toString());
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}
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public boolean isDescendent(TarEntry desc) {
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return desc.header.name.toString().startsWith(this.header.name.toString());
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return desc.header.name.toString().startsWith(header.name.toString());
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}
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public TarHeader getHeader() {
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return this.header;
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return header;
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}
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public String getName() {
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return this.header.name.toString();
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String name = header.name.toString();
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if (header.namePrefix != null && !header.namePrefix.toString().equals("")) {
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name = header.namePrefix.toString() + "/" + name;
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}
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return name;
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}
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public void setName(String name) {
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this.header.name = new StringBuffer(name);
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header.name = new StringBuffer(name);
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}
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public int getUserId() {
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return this.header.userId;
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return header.userId;
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}
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public void setUserId(int userId) {
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this.header.userId = userId;
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header.userId = userId;
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}
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public int getGroupId() {
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return this.header.groupId;
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return header.groupId;
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}
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public void setGroupId(int groupId) {
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this.header.groupId = groupId;
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header.groupId = groupId;
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}
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public String getUserName() {
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return this.header.userName.toString();
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return header.userName.toString();
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}
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public void setUserName(String userName) {
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this.header.userName = new StringBuffer(userName);
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header.userName = new StringBuffer(userName);
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}
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public String getGroupName() {
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return this.header.groupName.toString();
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return header.groupName.toString();
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}
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public void setGroupName(String groupName) {
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this.header.groupName = new StringBuffer(groupName);
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header.groupName = new StringBuffer(groupName);
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}
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public void setIds(int userId, int groupId) {
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@ -118,15 +121,15 @@ public class TarEntry {
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}
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public void setModTime(long time) {
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this.header.modTime = time / 1000;
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header.modTime = time / 1000;
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}
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public void setModTime(Date time) {
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this.header.modTime = time.getTime() / 1000;
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header.modTime = time.getTime() / 1000;
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}
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public Date getModTime() {
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return new Date(this.header.modTime * 1000);
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return new Date(header.modTime * 1000);
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}
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public File getFile() {
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@ -134,11 +137,11 @@ public class TarEntry {
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}
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public long getSize() {
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return this.header.size;
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return header.size;
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}
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public void setSize(long size) {
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this.header.size = size;
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header.size = size;
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}
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/**
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@ -150,11 +153,11 @@ public class TarEntry {
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if (this.file != null)
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return this.file.isDirectory();
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if (this.header != null) {
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if (this.header.linkFlag == TarHeader.LF_DIR)
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if (header != null) {
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if (header.linkFlag == TarHeader.LF_DIR)
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return true;
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if (this.header.name.toString().endsWith("/"))
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if (header.name.toString().endsWith("/"))
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return true;
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}
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@ -167,34 +170,7 @@ public class TarEntry {
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* @param entryName
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*/
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public void extractTarHeader(String entryName) {
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String name = entryName;
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name = name.replace(File.separatorChar, '/');
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if (name.startsWith("/"))
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name = name.substring(1);
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header.linkName = new StringBuffer("");
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header.name = new StringBuffer(name);
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if (file.isDirectory()) {
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header.mode = 040755;
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header.linkFlag = TarHeader.LF_DIR;
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if (header.name.charAt(header.name.length() - 1) != '/') {
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header.name.append("/");
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}
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header.size = 0;
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} else {
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header.mode = 0100644;
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header.linkFlag = TarHeader.LF_NORMAL;
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header.size = file.length();
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}
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header.modTime = file.lastModified() / 1000;
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header.checkSum = 0;
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header.devMajor = 0;
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header.devMinor = 0;
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header = TarHeader.createHeader(entryName, file.length(), file.lastModified() / 1000, file.isDirectory());
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}
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/**
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@ -221,28 +197,29 @@ public class TarEntry {
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public void writeEntryHeader(byte[] outbuf) {
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int offset = 0;
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offset = TarHeader.getNameBytes(this.header.name, outbuf, offset, TarHeader.NAMELEN);
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offset = Octal.getOctalBytes(this.header.mode, outbuf, offset, TarHeader.MODELEN);
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offset = Octal.getOctalBytes(this.header.userId, outbuf, offset, TarHeader.UIDLEN);
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offset = Octal.getOctalBytes(this.header.groupId, outbuf, offset, TarHeader.GIDLEN);
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offset = TarHeader.getNameBytes(header.name, outbuf, offset, TarHeader.NAMELEN);
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offset = Octal.getOctalBytes(header.mode, outbuf, offset, TarHeader.MODELEN);
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offset = Octal.getOctalBytes(header.userId, outbuf, offset, TarHeader.UIDLEN);
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offset = Octal.getOctalBytes(header.groupId, outbuf, offset, TarHeader.GIDLEN);
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long size = this.header.size;
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long size = header.size;
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offset = Octal.getLongOctalBytes(size, outbuf, offset, TarHeader.SIZELEN);
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offset = Octal.getLongOctalBytes(this.header.modTime, outbuf, offset, TarHeader.MODTIMELEN);
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offset = Octal.getLongOctalBytes(header.modTime, outbuf, offset, TarHeader.MODTIMELEN);
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int csOffset = offset;
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for (int c = 0; c < TarHeader.CHKSUMLEN; ++c)
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outbuf[offset++] = (byte) ' ';
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outbuf[offset++] = this.header.linkFlag;
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outbuf[offset++] = header.linkFlag;
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offset = TarHeader.getNameBytes(this.header.linkName, outbuf, offset, TarHeader.NAMELEN);
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offset = TarHeader.getNameBytes(this.header.magic, outbuf, offset, TarHeader.MAGICLEN);
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offset = TarHeader.getNameBytes(this.header.userName, outbuf, offset, TarHeader.UNAMELEN);
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offset = TarHeader.getNameBytes(this.header.groupName, outbuf, offset, TarHeader.GNAMELEN);
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offset = Octal.getOctalBytes(this.header.devMajor, outbuf, offset, TarHeader.DEVLEN);
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offset = Octal.getOctalBytes(this.header.devMinor, outbuf, offset, TarHeader.DEVLEN);
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offset = TarHeader.getNameBytes(header.linkName, outbuf, offset, TarHeader.NAMELEN);
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offset = TarHeader.getNameBytes(header.magic, outbuf, offset, TarHeader.MAGICLEN);
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offset = TarHeader.getNameBytes(header.userName, outbuf, offset, TarHeader.UNAMELEN);
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offset = TarHeader.getNameBytes(header.groupName, outbuf, offset, TarHeader.GNAMELEN);
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offset = Octal.getOctalBytes(header.devMajor, outbuf, offset, TarHeader.DEVLEN);
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offset = Octal.getOctalBytes(header.devMinor, outbuf, offset, TarHeader.DEVLEN);
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offset = TarHeader.getNameBytes(header.namePrefix, outbuf, offset, TarHeader.FILENAME_PREFIX);
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for (; offset < outbuf.length;)
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outbuf[offset++] = 0;
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@ -300,5 +277,8 @@ public class TarEntry {
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offset += TarHeader.DEVLEN;
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header.devMinor = (int) Octal.parseOctal(bh, offset, TarHeader.DEVLEN);
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offset += TarHeader.DEVLEN;
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header.namePrefix = TarHeader.parseName(bh, offset, TarHeader.FILENAME_PREFIX);
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}
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}
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@ -69,205 +69,186 @@ import java.io.File;
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public class TarHeader {
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/*
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* Header
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*/
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public static final int NAMELEN = 100;
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public static final int MODELEN = 8;
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public static final int UIDLEN = 8;
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public static final int GIDLEN = 8;
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public static final int SIZELEN = 12;
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public static final int MODTIMELEN = 12;
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public static final int CHKSUMLEN = 8;
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public static final byte LF_OLDNORM = 0;
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/*
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* Header
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*/
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public static final int NAMELEN = 100;
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public static final int MODELEN = 8;
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public static final int UIDLEN = 8;
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public static final int GIDLEN = 8;
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public static final int SIZELEN = 12;
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public static final int MODTIMELEN = 12;
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public static final int CHKSUMLEN = 8;
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public static final byte LF_OLDNORM = 0;
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/*
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* File Types
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*/
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public static final byte LF_NORMAL = (byte) '0';
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public static final byte LF_LINK = (byte) '1';
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public static final byte LF_SYMLINK = (byte) '2';
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public static final byte LF_CHR = (byte) '3';
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public static final byte LF_BLK = (byte) '4';
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public static final byte LF_DIR = (byte) '5';
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public static final byte LF_FIFO = (byte) '6';
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public static final byte LF_CONTIG = (byte) '7';
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/*
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* File Types
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*/
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public static final byte LF_NORMAL = (byte) '0';
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public static final byte LF_LINK = (byte) '1';
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public static final byte LF_SYMLINK = (byte) '2';
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public static final byte LF_CHR = (byte) '3';
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public static final byte LF_BLK = (byte) '4';
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public static final byte LF_DIR = (byte) '5';
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public static final byte LF_FIFO = (byte) '6';
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public static final byte LF_CONTIG = (byte) '7';
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/*
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* Ustar header
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*/
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/*
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* Ustar header
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*/
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public static final int MAGICLEN = 8;
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/**
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* The magic tag representing a POSIX tar archive.
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*/
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public static final String TMAGIC = "ustar";
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public static final int MAGICLEN = 8;
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/**
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* The magic tag representing a POSIX tar archive.
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*/
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public static final String TMAGIC = "ustar";
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/**
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* The magic tag representing a GNU tar archive.
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*/
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public static final String GNU_TMAGIC = "ustar ";
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/**
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* The magic tag representing a GNU tar archive.
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*/
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public static final String GNU_TMAGIC = "ustar ";
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public static final int UNAMELEN = 32;
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public static final int GNAMELEN = 32;
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public static final int DEVLEN = 8;
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public static final int UNAMELEN = 32;
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public static final int GNAMELEN = 32;
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public static final int DEVLEN = 8;
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public static final int FILENAME_PREFIX = 155;
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// Header values
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public StringBuffer name;
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public int mode;
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public int userId;
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public int groupId;
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public long size;
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public long modTime;
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public int checkSum;
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public byte linkFlag;
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public StringBuffer linkName;
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public StringBuffer magic;
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public StringBuffer userName;
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public StringBuffer groupName;
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public int devMajor;
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public int devMinor;
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// Header values
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public StringBuffer name;
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public int mode;
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public int userId;
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public int groupId;
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public long size;
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public long modTime;
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public int checkSum;
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public byte linkFlag;
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public StringBuffer linkName;
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public StringBuffer magic; // ustar indicator and version
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public StringBuffer userName;
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public StringBuffer groupName;
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public int devMajor;
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public int devMinor;
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public StringBuffer namePrefix;
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public TarHeader() {
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this.magic = new StringBuffer( TarHeader.TMAGIC );
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public TarHeader() {
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this.magic = new StringBuffer(TarHeader.TMAGIC);
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this.name = new StringBuffer();
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this.linkName = new StringBuffer();
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this.name = new StringBuffer();
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this.linkName = new StringBuffer();
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String user = System.getProperty( "user.name", "" );
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String user = System.getProperty("user.name", "");
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if (user.length() > 31)
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user = user.substring( 0, 31 );
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if (user.length() > 31)
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user = user.substring(0, 31);
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this.userId = 0;
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this.groupId = 0;
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this.userName = new StringBuffer( user );
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this.groupName = new StringBuffer( "" );
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}
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this.userId = 0;
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this.groupId = 0;
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this.userName = new StringBuffer(user);
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this.groupName = new StringBuffer("");
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this.namePrefix = new StringBuffer();
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}
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/**
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* Parse an entry name from a header buffer.
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*
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* @param name
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* @param header
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* The header buffer from which to parse.
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* @param offset
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* The offset into the buffer from which to parse.
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* @param length
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* The number of header bytes to parse.
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* @return The header's entry name.
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*/
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public static StringBuffer parseName(byte[] header, int offset, int length) {
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StringBuffer result = new StringBuffer( length );
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/**
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* Parse an entry name from a header buffer.
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*
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* @param name
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* @param header
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* The header buffer from which to parse.
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* @param offset
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* The offset into the buffer from which to parse.
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* @param length
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* The number of header bytes to parse.
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* @return The header's entry name.
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*/
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public static StringBuffer parseName(byte[] header, int offset, int length) {
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StringBuffer result = new StringBuffer(length);
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int end = offset + length;
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for (int i = offset; i < end; ++i) {
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if (header[i] == 0)
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break;
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result.append( (char) header[i] );
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}
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int end = offset + length;
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for (int i = offset; i < end; ++i) {
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if (header[i] == 0)
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break;
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result.append((char) header[i]);
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}
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return result;
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}
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return result;
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}
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/**
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* Determine the number of bytes in an entry name.
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*
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* @param name
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* @param header
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* The header buffer from which to parse.
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* @param offset
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* The offset into the buffer from which to parse.
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* @param length
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* The number of header bytes to parse.
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* @return The number of bytes in a header's entry name.
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*/
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public static int getNameBytes(StringBuffer name, byte[] buf, int offset, int length) {
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int i;
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/**
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* Determine the number of bytes in an entry name.
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*
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* @param name
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* @param header
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* The header buffer from which to parse.
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* @param offset
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* The offset into the buffer from which to parse.
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* @param length
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* The number of header bytes to parse.
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* @return The number of bytes in a header's entry name.
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*/
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public static int getNameBytes(StringBuffer name, byte[] buf, int offset, int length) {
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int i;
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for (i = 0; i < length && i < name.length(); ++i) {
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buf[offset + i] = (byte) name.charAt( i );
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}
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for (i = 0; i < length && i < name.length(); ++i) {
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buf[offset + i] = (byte) name.charAt(i);
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}
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for (; i < length; ++i) {
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buf[offset + i] = 0;
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}
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for (; i < length; ++i) {
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buf[offset + i] = 0;
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}
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return offset + length;
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}
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return offset + length;
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}
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/**
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* Creates a new header for a file entry.
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*
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* This method is useful for creating entries that do not correspond to a
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* file.
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*
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* @param fileName File name
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* @param fileSize File size in bytes
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* @param modTime Last modification time in numeric Unix time format
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*
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* @return
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*/
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public static TarHeader createFileHeader(String fileName, long fileSize, long modTime) {
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String name = fileName;
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TarHeader header = new TarHeader();
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name = name.replace(File.separatorChar, '/');
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/**
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* Creates a new header for a file entry.
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*
|
||||
* This method is useful for creating entries that do not correspond to a
|
||||
* file.
|
||||
*
|
||||
* @param name
|
||||
* File name
|
||||
* @param size
|
||||
* File size in bytes
|
||||
* @param modTime
|
||||
* Last modification time in numeric Unix time format
|
||||
*
|
||||
* @return
|
||||
*/
|
||||
public static TarHeader createHeader(String entryName, long size, long modTime, boolean dir) {
|
||||
String name = entryName;
|
||||
name = name.replace(File.separatorChar, '/');
|
||||
|
||||
if (name.startsWith("/"))
|
||||
name = name.substring(1);
|
||||
if (name.startsWith("/"))
|
||||
name = name.substring(1);
|
||||
|
||||
header.linkName = new StringBuffer("");
|
||||
TarHeader header = new TarHeader();
|
||||
header.linkName = new StringBuffer("");
|
||||
|
||||
header.name = new StringBuffer(name);
|
||||
if (name.length() > 100) {
|
||||
header.namePrefix = new StringBuffer(name.substring(0, name.lastIndexOf('/')));
|
||||
header.name = new StringBuffer(name.substring(name.lastIndexOf('/') + 1));
|
||||
} else {
|
||||
header.name = new StringBuffer(name);
|
||||
}
|
||||
|
||||
header.mode = 0100644;
|
||||
header.linkFlag = TarHeader.LF_NORMAL;
|
||||
header.size = fileSize;
|
||||
if (dir) {
|
||||
header.mode = 040755;
|
||||
header.linkFlag = TarHeader.LF_DIR;
|
||||
if (header.name.charAt(header.name.length() - 1) != '/') {
|
||||
header.name.append("/");
|
||||
}
|
||||
header.size = 0;
|
||||
} else {
|
||||
header.mode = 0100644;
|
||||
header.linkFlag = TarHeader.LF_NORMAL;
|
||||
header.size = size;
|
||||
}
|
||||
|
||||
header.modTime = modTime;
|
||||
header.checkSum = 0;
|
||||
header.devMajor = 0;
|
||||
header.devMinor = 0;
|
||||
|
||||
return header;
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a new header for a directory entry.
|
||||
*
|
||||
* This method is useful for creating entries that do not correspond to
|
||||
* a directory in the file system.
|
||||
*
|
||||
* @param fileName Directory name
|
||||
* @param modTime Last modification time in numeric Unix time format
|
||||
*
|
||||
* @return
|
||||
*/
|
||||
public static TarHeader createDirHeader(String dirName, long modTime) {
|
||||
String name = dirName;
|
||||
TarHeader header = new TarHeader();
|
||||
name = name.replace(File.separatorChar, '/');
|
||||
|
||||
if (name.startsWith("/"))
|
||||
name = name.substring(1);
|
||||
|
||||
header.linkName = new StringBuffer("");
|
||||
|
||||
header.name = new StringBuffer(name);
|
||||
|
||||
header.mode = 040755;
|
||||
header.linkFlag = TarHeader.LF_DIR;
|
||||
if (header.name.charAt(header.name.length() - 1) != '/') {
|
||||
header.name.append("/");
|
||||
}
|
||||
header.size = 0;
|
||||
|
||||
header.modTime = modTime;
|
||||
header.checkSum = 0;
|
||||
header.devMajor = 0;
|
||||
header.devMinor = 0;
|
||||
|
||||
return header;
|
||||
}
|
||||
header.modTime = modTime;
|
||||
header.checkSum = 0;
|
||||
header.devMajor = 0;
|
||||
header.devMinor = 0;
|
||||
|
||||
return header;
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user