mirror of
https://github.com/advplyr/audiobookshelf.git
synced 2025-10-30 18:12:25 -04:00
Fix: root user password change #93, Change: link to series filter on ab page #90, Add: basic mobi and azw3 ereader support
This commit is contained in:
advplyr
parent
120c70622a
commit
9715c53332
405
client/assets/mobi.js
Normal file
405
client/assets/mobi.js
Normal file
@ -0,0 +1,405 @@
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function ab2str(buf) {
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if (buf instanceof ArrayBuffer) {
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buf = new Uint8Array(buf);
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}
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return new TextDecoder("utf-8").decode(buf);
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}
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var domParser = new DOMParser();
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class Buffer {
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constructor(capacity) {
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this.capacity = capacity;
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this.fragment_list = [];
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this.cur_fragment = new Fragment(capacity);
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this.fragment_list.push(this.cur_fragment);
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}
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write(byte) {
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var result = this.cur_fragment.write(byte);
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if (!result) {
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this.cur_fragment = new Fragment(this.capacity);
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this.fragment_list.push(this.cur_fragment);
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this.cur_fragment.write(byte);
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}
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}
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get(idx) {
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var fi = 0;
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while (fi < this.fragment_list.length) {
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var frag = this.fragment_list[fi];
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if (idx < frag.size) {
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return frag.get(idx);
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}
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idx -= frag.size;
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fi += 1;
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}
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return null;
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}
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size() {
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var s = 0;
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for (var i = 0; i < this.fragment_list.length; i++) {
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s += this.fragment_list[i].size;
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}
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return s;
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}
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shrink() {
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var total_buffer = new Uint8Array(this.size());
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var offset = 0;
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for (var i = 0; i < this.fragment_list.length; i++) {
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var frag = this.fragment_list[i];
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if (frag.full()) {
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total_buffer.set(frag.buffer, offset);
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} else {
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total_buffer.set(frag.buffer.slice(0, frag.size), offset);
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}
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offset += frag.size;
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}
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return total_buffer;
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}
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}
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var combine_uint8array = function (buffers) {
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var total_size = 0;
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for (var i = 0; i < buffers.length; i++) {
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var buffer = buffers[i];
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total_size += buffer.length;
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}
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var total_buffer = new Uint8Array(total_size);
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var offset = 0;
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for (var i = 0; i < buffers.length; i++) {
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var buffer = buffers[i];
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total_buffer.set(buffer, offset);
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offset += buffer.length;
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}
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return total_buffer;
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}
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class Fragment {
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constructor(capacity) {
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this.buffer = new Uint8Array(capacity);
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this.capacity = capacity;
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this.size = 0;
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}
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write(byte) {
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if (this.size >= this.capacity) {
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return false;
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}
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this.buffer[this.size] = byte;
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this.size += 1;
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return true;
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}
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full() {
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return this.size === this.capacity;
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}
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get(idx) {
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return this.buffer[idx];
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}
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}
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var uncompression_lz77 = function (data) {
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var length = data.length;
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var offset = 0; // Current offset into data
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var buffer = new Buffer(data.length);
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while (offset < length) {
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var char = data[offset];
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offset += 1;
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if (char == 0) {
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buffer.write(char);
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} else if (char <= 8) {
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for (var i = offset; i < offset + char; i++) {
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buffer.write(data[i]);
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}
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offset += char;
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} else if (char <= 0x7f) {
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buffer.write(char);
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} else if (char <= 0xbf) {
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var next = data[offset];
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offset += 1;
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var distance = ((char << 8 | next) >> 3) & 0x7ff;
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var lz_length = (next & 0x7) + 3;
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var buffer_size = buffer.size();
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for (var i = 0; i < lz_length; i++) {
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buffer.write(buffer.get(buffer_size - distance))
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buffer_size += 1;
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}
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} else {
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buffer.write(32);
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buffer.write(char ^ 0x80);
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}
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}
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return buffer;
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};
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class MobiFile {
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constructor(data) {
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this.view = new DataView(data);
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this.buffer = this.view.buffer;
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this.offset = 0;
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this.header = null;
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}
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parse() {
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}
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getUint8() {
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var v = this.view.getUint8(this.offset);
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this.offset += 1;
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return v;
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}
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getUint16() {
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var v = this.view.getUint16(this.offset);
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this.offset += 2;
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return v;
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}
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getUint32() {
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var v = this.view.getUint32(this.offset);
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this.offset += 4;
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return v;
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}
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getStr(size) {
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var v = ab2str(this.buffer.slice(this.offset, this.offset + size));
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this.offset += size;
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return v;
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}
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skip(size) {
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this.offset += size;
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}
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setoffset(_of) {
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this.offset = _of;
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}
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get_record_extrasize(data, flags) {
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var pos = data.length - 1;
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var extra = 0;
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for (var i = 15; i > 0; i--) {
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if (flags & (1 << i)) {
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var res = this.buffer_get_varlen(data, pos);
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var size = res[0];
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var l = res[1];
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pos = res[2];
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pos -= size - l;
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extra += size;
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}
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}
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if (flags & 1) {
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var a = data[pos];
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extra += (a & 0x3) + 1;
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}
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return extra;
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}
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// data should be uint8array
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buffer_get_varlen(data, pos) {
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var l = 0;
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var size = 0;
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var byte_count = 0;
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var mask = 0x7f;
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var stop_flag = 0x80;
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var shift = 0;
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for (var i = 0; ; i++) {
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var byte = data[pos];
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size |= (byte & mask) << shift;
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shift += 7;
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l += 1;
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byte_count += 1;
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pos -= 1;
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var to_stop = byte & stop_flag;
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if (byte_count >= 4 || to_stop > 0) {
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break;
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}
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}
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return [size, l, pos];
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}
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read_text() {
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var text_end = this.palm_header.record_count;
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var buffers = [];
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for (var i = 1; i <= text_end; i++) {
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buffers.push(this.read_text_record(i));
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}
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var all = combine_uint8array(buffers)
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return ab2str(all);
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}
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read_text_record(i) {
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var flags = this.mobi_header.extra_flags;
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var begin = this.reclist[i].offset;
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var end = this.reclist[i + 1].offset;
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var data = new Uint8Array(this.buffer.slice(begin, end))
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var ex = this.get_record_extrasize(data, flags);
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data = new Uint8Array(this.buffer.slice(begin, end - ex));
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if (this.palm_header.compression === 2) {
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var buffer = uncompression_lz77(data);
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return buffer.shrink();
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} else {
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return data;
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}
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}
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read_image(idx) {
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var first_image_idx = this.mobi_header.first_image_idx;
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var begin = this.reclist[first_image_idx + idx].offset;
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var end = this.reclist[first_image_idx + idx + 1].offset;
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var data = new Uint8Array(this.buffer.slice(begin, end))
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return new Blob([data.buffer]);
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}
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load() {
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this.header = this.load_pdbheader();
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this.reclist = this.load_reclist();
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this.load_record0();
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}
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load_pdbheader() {
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var header = {};
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header.name = this.getStr(32);
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header.attr = this.getUint16();
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header.version = this.getUint16();
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header.ctime = this.getUint32();
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header.mtime = this.getUint32();
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header.btime = this.getUint32();
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header.mod_num = this.getUint32();
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header.appinfo_offset = this.getUint32();
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header.sortinfo_offset = this.getUint32();
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header.type = this.getStr(4);
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header.creator = this.getStr(4);
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header.uid = this.getUint32();
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header.next_rec = this.getUint32();
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header.record_num = this.getUint16();
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return header;
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}
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load_reclist() {
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var reclist = [];
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for (var i = 0; i < this.header.record_num; i++) {
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var record = {};
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record.offset = this.getUint32();
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// TODO(zz) change
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record.attr = this.getUint32();
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reclist.push(record);
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}
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return reclist;
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}
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load_record0() {
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this.palm_header = this.load_record0_header();
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this.mobi_header = this.load_mobi_header();
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}
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load_record0_header() {
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var p_header = {};
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var first_record = this.reclist[0];
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this.setoffset(first_record.offset);
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p_header.compression = this.getUint16();
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this.skip(2);
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p_header.text_length = this.getUint32();
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p_header.record_count = this.getUint16();
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p_header.record_size = this.getUint16();
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p_header.encryption_type = this.getUint16();
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this.skip(2);
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return p_header;
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}
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load_mobi_header() {
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var mobi_header = {};
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var start_offset = this.offset;
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mobi_header.identifier = this.getUint32();
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mobi_header.header_length = this.getUint32();
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mobi_header.mobi_type = this.getUint32();
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mobi_header.text_encoding = this.getUint32();
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mobi_header.uid = this.getUint32();
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mobi_header.generator_version = this.getUint32();
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this.skip(40);
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mobi_header.first_nonbook_index = this.getUint32();
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mobi_header.full_name_offset = this.getUint32();
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mobi_header.full_name_length = this.getUint32();
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mobi_header.language = this.getUint32();
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mobi_header.input_language = this.getUint32();
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mobi_header.output_language = this.getUint32();
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mobi_header.min_version = this.getUint32();
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mobi_header.first_image_idx = this.getUint32();
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mobi_header.huff_rec_index = this.getUint32();
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mobi_header.huff_rec_count = this.getUint32();
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mobi_header.datp_rec_index = this.getUint32();
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mobi_header.datp_rec_count = this.getUint32();
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mobi_header.exth_flags = this.getUint32();
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this.skip(36);
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mobi_header.drm_offset = this.getUint32();
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mobi_header.drm_count = this.getUint32();
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mobi_header.drm_size = this.getUint32();
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mobi_header.drm_flags = this.getUint32();
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this.skip(8);
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// TODO (zz) fdst_index
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this.skip(4);
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this.skip(46);
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mobi_header.extra_flags = this.getUint16();
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this.setoffset(start_offset + mobi_header.header_length)
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return mobi_header;
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}
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load_exth_header() {
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// TODO
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return {};
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}
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render_to(id) {
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this.load();
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var content = this.read_text();
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var bookDom = document.getElementById(id);
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while (bookDom.firstChild) {
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bookDom.removeChild(bookDom.firstChild);
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}
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var bookDoc = domParser.parseFromString(content, "text/html");
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bookDoc.body.childNodes.forEach(function (x) {
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if (x instanceof Element) {
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bookDom.appendChild(x);
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}
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});
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var imgDoms = bookDom.getElementsByTagName("img");
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for (var i = 0; i < imgDoms.length; i++) {
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this.render_image(imgDoms, i);
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}
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}
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render_image(imgDoms, i) {
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var imgDom = imgDoms[i];
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var idx = +imgDom.getAttribute("recindex");
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var blob = this.read_image(idx - 1);
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var imgReader = new FileReader();
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imgReader.onload = function (e) {
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imgDom.src = e.target.result;
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};
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imgReader.readAsDataURL(blob);
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}
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}
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module.exports = MobiFile
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@ -9,11 +9,14 @@
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</select>
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</div> -->
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<div class="absolute top-4 left-4 font-book">
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<h1 class="text-2xl mb-1">{{ title }}</h1>
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<p v-if="author">by {{ author }}</p>
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<h1 class="text-2xl mb-1">{{ title || abTitle }}</h1>
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<p v-if="author || abAuthor">by {{ author || abAuthor }}</p>
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</div>
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<div class="h-full flex items-center">
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<div v-if="!epubEbook && mobiEbook" class="absolute top-4 left-0 w-full flex justify-center">
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<p class="text-error font-semibold">Warning: Reading mobi & azw3 files is in the very early stages</p>
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</div>
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<div v-if="epubEbook" class="h-full flex items-center">
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<div style="width: 100px; max-width: 100px" class="h-full flex items-center overflow-x-hidden">
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<span v-show="hasPrev" class="material-icons text-black text-opacity-30 hover:text-opacity-80 cursor-pointer text-8xl" @mousedown.prevent @click="pageLeft">chevron_left</span>
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</div>
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@ -28,11 +31,17 @@
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<span v-show="hasNext" class="material-icons text-black text-opacity-30 hover:text-opacity-80 cursor-pointer text-8xl" @mousedown.prevent @click="pageRight">chevron_right</span>
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</div>
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</div>
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<div v-else class="h-full flex items-center justify-center">
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<div class="w-full max-w-4xl overflow-y-auto border border-black border-opacity-10 p-4" style="max-height: 80vh">
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<div id="viewer" />
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</div>
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</div>
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</div>
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</template>
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<script>
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import ePub from 'epubjs'
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import mobijs from '@/assets/mobi.js'
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export default {
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data() {
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@ -65,6 +74,12 @@ export default {
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this.$store.commit('setShowEReader', val)
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}
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},
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abTitle() {
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return this.selectedAudiobook.book.title
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},
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abAuthor() {
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return this.selectedAudiobook.book.author
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},
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selectedAudiobook() {
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return this.$store.state.selectedAudiobook
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},
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@ -83,6 +98,16 @@ export default {
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epubPath() {
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return this.epubEbook ? this.epubEbook.path : null
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},
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mobiEbook() {
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return this.ebooks.find((eb) => eb.ext === '.mobi' || eb.ext === '.azw3')
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},
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mobiPath() {
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return this.mobiEbook ? this.mobiEbook.path : null
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},
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mobiUrl() {
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if (!this.mobiPath) return null
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return `/ebook/${this.libraryId}/${this.folderId}/${this.mobiPath}`
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},
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url() {
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if (!this.epubPath) return null
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return `/ebook/${this.libraryId}/${this.folderId}/${this.epubPath}`
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@ -134,7 +159,24 @@ export default {
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init() {
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this.registerListeners()
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console.log('epub', this.url, this.epubEbook, this.ebooks)
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if (this.epubEbook) {
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this.initEpub()
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} else if (this.mobiEbook) {
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this.initMobi()
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}
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},
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async initMobi() {
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var buff = await this.$axios.$get(this.mobiUrl, {
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responseType: 'blob'
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})
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var reader = new FileReader()
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reader.onload = function (event) {
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var file_content = event.target.result
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||||
new mobijs(file_content).render_to('viewer')
|
||||
}
|
||||
reader.readAsArrayBuffer(buff)
|
||||
},
|
||||
initEpub() {
|
||||
// var book = ePub(this.url, {
|
||||
// requestHeaders: {
|
||||
// Authorization: `Bearer ${this.userToken}`
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
{
|
||||
"name": "audiobookshelf-client",
|
||||
"version": "1.4.5",
|
||||
"version": "1.4.6",
|
||||
"description": "Audiobook manager and player",
|
||||
"main": "index.js",
|
||||
"scripts": {
|
||||
|
||||
@ -23,7 +23,7 @@
|
||||
<div class="flex items-center py-2">
|
||||
<p v-if="isRoot" class="text-error py-2 text-xs">* Root user is the only user that can have an empty password</p>
|
||||
<div class="flex-grow" />
|
||||
<ui-btn v-show="password && newPassword && confirmPassword" type="submit" :loading="changingPassword" color="success">Submit</ui-btn>
|
||||
<ui-btn v-show="(password && newPassword && confirmPassword) || isRoot" type="submit" :loading="changingPassword" color="success">Submit</ui-btn>
|
||||
</div>
|
||||
</form>
|
||||
</div>
|
||||
|
||||
@ -22,8 +22,7 @@
|
||||
by <nuxt-link v-if="author" :to="`/library/${libraryId}/bookshelf?filter=authors.${$encode(author)}`" class="hover:underline">{{ author }}</nuxt-link
|
||||
><span v-else>Unknown</span>
|
||||
</p>
|
||||
|
||||
<h3 v-if="series" class="font-sans text-gray-300 text-lg leading-7 mb-4">{{ seriesText }}</h3>
|
||||
<nuxt-link v-if="series" :to="`/library/${libraryId}/bookshelf?filter=series.${$encode(series)}`" class="hover:underline font-sans text-gray-300 text-lg leading-7 mb-4"> {{ seriesText }}</nuxt-link>
|
||||
|
||||
<!-- <div class="w-min">
|
||||
<ui-tooltip :text="authorTooltipText" direction="bottom">
|
||||
@ -105,7 +104,7 @@
|
||||
{{ isMissing ? 'Missing' : 'Incomplete' }}
|
||||
</ui-btn>
|
||||
|
||||
<ui-btn v-if="showExperimentalFeatures && epubEbook" color="info" :padding-x="4" small class="flex items-center h-9 mr-2" @click="openEbook">
|
||||
<ui-btn v-if="showExperimentalFeatures && (epubEbook || mobiEbook)" color="info" :padding-x="4" small class="flex items-center h-9 mr-2" @click="openEbook">
|
||||
<span class="material-icons -ml-2 pr-2 text-white">auto_stories</span>
|
||||
Read
|
||||
</ui-btn>
|
||||
@ -329,7 +328,10 @@ export default {
|
||||
return !this.tracks.length && this.ebooks.length && !this.showExperimentalFeatures
|
||||
},
|
||||
epubEbook() {
|
||||
return this.audiobook.ebooks.find((eb) => eb.ext === '.epub')
|
||||
return this.ebooks.find((eb) => eb.ext === '.epub')
|
||||
},
|
||||
mobiEbook() {
|
||||
return this.ebooks.find((eb) => eb.ext === '.mobi' || eb.ext === '.azw3')
|
||||
},
|
||||
userToken() {
|
||||
return this.$store.getters['user/getToken']
|
||||
@ -455,6 +457,11 @@ export default {
|
||||
},
|
||||
mounted() {
|
||||
this.$store.commit('audiobooks/addListener', { id: 'audiobook', audiobookId: this.audiobookId, meth: this.audiobookUpdated })
|
||||
|
||||
// If a library has not yet been loaded, use this audiobooks library id as the current
|
||||
if (!this.$store.state.audiobooks.loadedLibraryId && this.libraryId) {
|
||||
this.$store.commit('libraries/setCurrentLibrary', this.libraryId)
|
||||
}
|
||||
},
|
||||
beforeDestroy() {
|
||||
this.$store.commit('audiobooks/removeListener', 'audiobook')
|
||||
|
||||
@ -113,7 +113,6 @@ export const mutations = {
|
||||
state.showEditModal = val
|
||||
},
|
||||
showEReader(state, audiobook) {
|
||||
console.log('Show EReader', audiobook)
|
||||
state.selectedAudiobook = audiobook
|
||||
state.showEReader = true
|
||||
},
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
{
|
||||
"name": "audiobookshelf",
|
||||
"version": "1.4.5",
|
||||
"version": "1.4.6",
|
||||
"description": "Self-hosted audiobook server for managing and playing audiobooks",
|
||||
"main": "index.js",
|
||||
"scripts": {
|
||||
|
||||
@ -131,6 +131,10 @@ class Audiobook {
|
||||
return this.otherFiles.find(file => file.ext === '.epub')
|
||||
}
|
||||
|
||||
get hasMobi() {
|
||||
return this.otherFiles.find(file => file.ext === '.mobi' || file.ext === '.azw3')
|
||||
}
|
||||
|
||||
get hasMissingIno() {
|
||||
return !this.ino || this._audioFiles.find(abf => !abf.ino) || this._otherFiles.find(f => !f.ino) || this._tracks.find(t => !t.ino)
|
||||
}
|
||||
@ -202,7 +206,7 @@ class Audiobook {
|
||||
hasInvalidParts: this.invalidParts ? this.invalidParts.length : 0,
|
||||
// numEbooks: this.ebooks.length,
|
||||
ebooks: this.ebooks.map(ebook => ebook.toJSON()),
|
||||
numEbooks: this.hasEpub ? 1 : 0, // Only supporting epubs in the reader currently
|
||||
numEbooks: (this.hasEpub || this.hasMobi) ? 1 : 0, // Only supporting epubs in the reader currently
|
||||
numTracks: this.tracks.length,
|
||||
chapters: this.chapters || [],
|
||||
isMissing: !!this.isMissing,
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
const globals = {
|
||||
SupportedImageTypes: ['png', 'jpg', 'jpeg', 'webp'],
|
||||
SupportedAudioTypes: ['m4b', 'mp3', 'm4a', 'flac', 'opus', 'mp4'],
|
||||
SupportedEbookTypes: ['epub', 'pdf', 'mobi']
|
||||
SupportedEbookTypes: ['epub', 'pdf', 'mobi', 'azw3']
|
||||
}
|
||||
|
||||
module.exports = globals
|
||||
|
||||
404
server/utils/mobi.js
Normal file
404
server/utils/mobi.js
Normal file
@ -0,0 +1,404 @@
|
||||
function ab2str(buf) {
|
||||
if (buf instanceof ArrayBuffer) {
|
||||
buf = new Uint8Array(buf);
|
||||
}
|
||||
return new TextDecoder("utf-8").decode(buf);
|
||||
}
|
||||
|
||||
var domParser = new DOMParser();
|
||||
|
||||
class Buffer {
|
||||
constructor(capacity) {
|
||||
this.capacity = capacity;
|
||||
this.fragment_list = [];
|
||||
this.cur_fragment = new Fragment(capacity);
|
||||
this.fragment_list.push(this.cur_fragment);
|
||||
}
|
||||
write(byte) {
|
||||
var result = this.cur_fragment.write(byte);
|
||||
if (!result) {
|
||||
this.cur_fragment = new Fragment(this.capacity);
|
||||
this.fragment_list.push(this.cur_fragment);
|
||||
this.cur_fragment.write(byte);
|
||||
}
|
||||
}
|
||||
get(idx) {
|
||||
var fi = 0;
|
||||
while (fi < this.fragment_list.length) {
|
||||
var frag = this.fragment_list[fi];
|
||||
if (idx < frag.size) {
|
||||
return frag.get(idx);
|
||||
}
|
||||
idx -= frag.size;
|
||||
fi += 1;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
size() {
|
||||
var s = 0;
|
||||
for (var i = 0; i < this.fragment_list.length; i++) {
|
||||
s += this.fragment_list[i].size;
|
||||
}
|
||||
return s;
|
||||
}
|
||||
shrink() {
|
||||
var total_buffer = new Uint8Array(this.size());
|
||||
var offset = 0;
|
||||
for (var i = 0; i < this.fragment_list.length; i++) {
|
||||
var frag = this.fragment_list[i];
|
||||
if (frag.full()) {
|
||||
total_buffer.set(frag.buffer, offset);
|
||||
} else {
|
||||
total_buffer.set(frag.buffer.slice(0, frag.size), offset);
|
||||
}
|
||||
offset += frag.size;
|
||||
}
|
||||
return total_buffer;
|
||||
}
|
||||
}
|
||||
|
||||
var combine_uint8array = function (buffers) {
|
||||
var total_size = 0;
|
||||
for (var i = 0; i < buffers.length; i++) {
|
||||
var buffer = buffers[i];
|
||||
total_size += buffer.length;
|
||||
}
|
||||
var total_buffer = new Uint8Array(total_size);
|
||||
var offset = 0;
|
||||
for (var i = 0; i < buffers.length; i++) {
|
||||
var buffer = buffers[i];
|
||||
total_buffer.set(buffer, offset);
|
||||
offset += buffer.length;
|
||||
}
|
||||
return total_buffer;
|
||||
}
|
||||
|
||||
class Fragment {
|
||||
constructor(capacity) {
|
||||
this.buffer = new Uint8Array(capacity);
|
||||
this.capacity = capacity;
|
||||
this.size = 0;
|
||||
}
|
||||
|
||||
write(byte) {
|
||||
if (this.size >= this.capacity) {
|
||||
return false;
|
||||
}
|
||||
this.buffer[this.size] = byte;
|
||||
this.size += 1;
|
||||
return true;
|
||||
}
|
||||
full() {
|
||||
return this.size === this.capacity;
|
||||
}
|
||||
get(idx) {
|
||||
return this.buffer[idx];
|
||||
}
|
||||
}
|
||||
|
||||
var uncompression_lz77 = function (data) {
|
||||
var length = data.length;
|
||||
var offset = 0; // Current offset into data
|
||||
var buffer = new Buffer(data.length);
|
||||
|
||||
while (offset < length) {
|
||||
var char = data[offset];
|
||||
offset += 1;
|
||||
|
||||
if (char == 0) {
|
||||
buffer.write(char);
|
||||
} else if (char <= 8) {
|
||||
for (var i = offset; i < offset + char; i++) {
|
||||
buffer.write(data[i]);
|
||||
}
|
||||
offset += char;
|
||||
} else if (char <= 0x7f) {
|
||||
buffer.write(char);
|
||||
} else if (char <= 0xbf) {
|
||||
var next = data[offset];
|
||||
offset += 1;
|
||||
var distance = ((char << 8 | next) >> 3) & 0x7ff;
|
||||
var lz_length = (next & 0x7) + 3;
|
||||
|
||||
var buffer_size = buffer.size();
|
||||
for (var i = 0; i < lz_length; i++) {
|
||||
buffer.write(buffer.get(buffer_size - distance))
|
||||
buffer_size += 1;
|
||||
}
|
||||
} else {
|
||||
buffer.write(32);
|
||||
buffer.write(char ^ 0x80);
|
||||
}
|
||||
}
|
||||
return buffer;
|
||||
};
|
||||
|
||||
class MobiFile {
|
||||
constructor(data) {
|
||||
this.view = new DataView(data);
|
||||
this.buffer = this.view.buffer;
|
||||
this.offset = 0;
|
||||
this.header = null;
|
||||
}
|
||||
|
||||
parse() {
|
||||
|
||||
}
|
||||
|
||||
getUint8() {
|
||||
var v = this.view.getUint8(this.offset);
|
||||
this.offset += 1;
|
||||
return v;
|
||||
}
|
||||
|
||||
getUint16() {
|
||||
var v = this.view.getUint16(this.offset);
|
||||
this.offset += 2;
|
||||
return v;
|
||||
}
|
||||
|
||||
getUint32() {
|
||||
var v = this.view.getUint32(this.offset);
|
||||
this.offset += 4;
|
||||
return v;
|
||||
}
|
||||
|
||||
getStr(size) {
|
||||
var v = ab2str(this.buffer.slice(this.offset, this.offset + size));
|
||||
this.offset += size;
|
||||
return v;
|
||||
}
|
||||
|
||||
skip(size) {
|
||||
this.offset += size;
|
||||
}
|
||||
|
||||
setoffset(_of) {
|
||||
this.offset = _of;
|
||||
}
|
||||
|
||||
get_record_extrasize(data, flags) {
|
||||
var pos = data.length - 1;
|
||||
var extra = 0;
|
||||
for (var i = 15; i > 0; i--) {
|
||||
if (flags & (1 << i)) {
|
||||
var res = this.buffer_get_varlen(data, pos);
|
||||
var size = res[0];
|
||||
var l = res[1];
|
||||
pos = res[2];
|
||||
pos -= size - l;
|
||||
extra += size;
|
||||
}
|
||||
}
|
||||
if (flags & 1) {
|
||||
var a = data[pos];
|
||||
extra += (a & 0x3) + 1;
|
||||
}
|
||||
return extra;
|
||||
}
|
||||
|
||||
// data should be uint8array
|
||||
buffer_get_varlen(data, pos) {
|
||||
var l = 0;
|
||||
var size = 0;
|
||||
var byte_count = 0;
|
||||
var mask = 0x7f;
|
||||
var stop_flag = 0x80;
|
||||
var shift = 0;
|
||||
for (var i = 0; ; i++) {
|
||||
var byte = data[pos];
|
||||
size |= (byte & mask) << shift;
|
||||
shift += 7;
|
||||
l += 1;
|
||||
byte_count += 1;
|
||||
pos -= 1;
|
||||
|
||||
var to_stop = byte & stop_flag;
|
||||
if (byte_count >= 4 || to_stop > 0) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
return [size, l, pos];
|
||||
}
|
||||
|
||||
read_text() {
|
||||
var text_end = this.palm_header.record_count;
|
||||
var buffers = [];
|
||||
for (var i = 1; i <= text_end; i++) {
|
||||
buffers.push(this.read_text_record(i));
|
||||
}
|
||||
var all = combine_uint8array(buffers)
|
||||
return ab2str(all);
|
||||
}
|
||||
|
||||
read_text_record(i) {
|
||||
var flags = this.mobi_header.extra_flags;
|
||||
var begin = this.reclist[i].offset;
|
||||
var end = this.reclist[i + 1].offset;
|
||||
|
||||
var data = new Uint8Array(this.buffer.slice(begin, end))
|
||||
var ex = this.get_record_extrasize(data, flags);
|
||||
|
||||
data = new Uint8Array(this.buffer.slice(begin, end - ex));
|
||||
if (this.palm_header.compression === 2) {
|
||||
var buffer = uncompression_lz77(data);
|
||||
return buffer.shrink();
|
||||
} else {
|
||||
return data;
|
||||
}
|
||||
}
|
||||
|
||||
read_image(idx) {
|
||||
var first_image_idx = this.mobi_header.first_image_idx;
|
||||
var begin = this.reclist[first_image_idx + idx].offset;
|
||||
var end = this.reclist[first_image_idx + idx + 1].offset;
|
||||
var data = new Uint8Array(this.buffer.slice(begin, end))
|
||||
return new Blob([data.buffer]);
|
||||
}
|
||||
|
||||
load() {
|
||||
this.header = this.load_pdbheader();
|
||||
this.reclist = this.load_reclist();
|
||||
this.load_record0();
|
||||
}
|
||||
|
||||
load_pdbheader() {
|
||||
var header = {};
|
||||
header.name = this.getStr(32);
|
||||
header.attr = this.getUint16();
|
||||
header.version = this.getUint16();
|
||||
header.ctime = this.getUint32();
|
||||
header.mtime = this.getUint32();
|
||||
header.btime = this.getUint32();
|
||||
header.mod_num = this.getUint32();
|
||||
header.appinfo_offset = this.getUint32();
|
||||
header.sortinfo_offset = this.getUint32();
|
||||
header.type = this.getStr(4);
|
||||
header.creator = this.getStr(4);
|
||||
header.uid = this.getUint32();
|
||||
header.next_rec = this.getUint32();
|
||||
header.record_num = this.getUint16();
|
||||
|
||||
return header;
|
||||
}
|
||||
|
||||
load_reclist() {
|
||||
var reclist = [];
|
||||
for (var i = 0; i < this.header.record_num; i++) {
|
||||
var record = {};
|
||||
record.offset = this.getUint32();
|
||||
// TODO(zz) change
|
||||
record.attr = this.getUint32();
|
||||
reclist.push(record);
|
||||
}
|
||||
return reclist;
|
||||
}
|
||||
load_record0() {
|
||||
this.palm_header = this.load_record0_header();
|
||||
this.mobi_header = this.load_mobi_header();
|
||||
}
|
||||
|
||||
load_record0_header() {
|
||||
var p_header = {};
|
||||
var first_record = this.reclist[0];
|
||||
this.setoffset(first_record.offset);
|
||||
|
||||
p_header.compression = this.getUint16();
|
||||
this.skip(2);
|
||||
p_header.text_length = this.getUint32();
|
||||
p_header.record_count = this.getUint16();
|
||||
p_header.record_size = this.getUint16();
|
||||
p_header.encryption_type = this.getUint16();
|
||||
this.skip(2);
|
||||
|
||||
return p_header;
|
||||
}
|
||||
|
||||
load_mobi_header() {
|
||||
var mobi_header = {};
|
||||
|
||||
var start_offset = this.offset;
|
||||
|
||||
mobi_header.identifier = this.getUint32();
|
||||
mobi_header.header_length = this.getUint32();
|
||||
mobi_header.mobi_type = this.getUint32();
|
||||
mobi_header.text_encoding = this.getUint32();
|
||||
mobi_header.uid = this.getUint32();
|
||||
mobi_header.generator_version = this.getUint32();
|
||||
|
||||
this.skip(40);
|
||||
|
||||
mobi_header.first_nonbook_index = this.getUint32();
|
||||
mobi_header.full_name_offset = this.getUint32();
|
||||
mobi_header.full_name_length = this.getUint32();
|
||||
|
||||
mobi_header.language = this.getUint32();
|
||||
mobi_header.input_language = this.getUint32();
|
||||
mobi_header.output_language = this.getUint32();
|
||||
mobi_header.min_version = this.getUint32();
|
||||
mobi_header.first_image_idx = this.getUint32();
|
||||
|
||||
mobi_header.huff_rec_index = this.getUint32();
|
||||
mobi_header.huff_rec_count = this.getUint32();
|
||||
mobi_header.datp_rec_index = this.getUint32();
|
||||
mobi_header.datp_rec_count = this.getUint32();
|
||||
|
||||
mobi_header.exth_flags = this.getUint32();
|
||||
|
||||
this.skip(36);
|
||||
|
||||
mobi_header.drm_offset = this.getUint32();
|
||||
mobi_header.drm_count = this.getUint32();
|
||||
mobi_header.drm_size = this.getUint32();
|
||||
mobi_header.drm_flags = this.getUint32();
|
||||
|
||||
this.skip(8);
|
||||
|
||||
// TODO (zz) fdst_index
|
||||
this.skip(4);
|
||||
|
||||
this.skip(46);
|
||||
|
||||
mobi_header.extra_flags = this.getUint16();
|
||||
|
||||
this.setoffset(start_offset + mobi_header.header_length)
|
||||
|
||||
return mobi_header;
|
||||
}
|
||||
load_exth_header() {
|
||||
// TODO
|
||||
return {};
|
||||
}
|
||||
|
||||
render_to(id) {
|
||||
this.load();
|
||||
var content = this.read_text();
|
||||
|
||||
var bookDom = document.getElementById(id);
|
||||
while (bookDom.firstChild) {
|
||||
bookDom.removeChild(bookDom.firstChild);
|
||||
}
|
||||
|
||||
var bookDoc = domParser.parseFromString(content, "text/html");
|
||||
bookDoc.body.childNodes.forEach(function (x) {
|
||||
if (x instanceof Element) {
|
||||
bookDom.appendChild(x);
|
||||
}
|
||||
});
|
||||
|
||||
var imgDoms = bookDom.getElementsByTagName("img");
|
||||
for (var i = 0; i < imgDoms.length; i++) {
|
||||
this.render_image(imgDoms, i);
|
||||
}
|
||||
}
|
||||
render_image(imgDoms, i) {
|
||||
var imgDom = imgDoms[i];
|
||||
var idx = +imgDom.getAttribute("recindex");
|
||||
var blob = this.read_image(idx - 1);
|
||||
var imgReader = new FileReader();
|
||||
imgReader.onload = function (e) {
|
||||
imgDom.src = e.target.result;
|
||||
};
|
||||
imgReader.readAsDataURL(blob);
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user