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/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2017 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
@LICENSE@
*
* ---------------
* CmapSpec.java
* ---------------
*/
package org.jpedal.fonts;
import java.util.TreeMap;
/**
* reads adobe cmap files for encoding and mapping
*
*/
public final class CmapSpec {
private static final byte[] CHAR256 = {
// 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F,
1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, // 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 1
1, 0, 0, 0, 0, 2, 0, 0, 2, 2, 0, 0, 0, 0, 0, 2, // 2
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 2, 0, 2, 0, // 3
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 4
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0, // 5
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 6
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 2, 0, 0, // 7
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 8
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 9
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // A
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // B
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // C
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // D
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // E
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 // F
};
private final byte[] cmapData;
private long[][] codeSpaceRange;
private final TreeMap notDefRange = new TreeMap();
public final TreeMap cidRange = new TreeMap();
private final TreeMap bfRange = new TreeMap();
private CmapEncoding cmapEncoding;
private int p;
private final int len;
public CmapSpec(final byte[] cmapData) {
this.cmapData = cmapData;
len = cmapData.length;
codeSpaceRange = new long[1][2];
codeSpaceRange[0][1] = 65535;
int count;
while (p < len) {
if ((cmapData[p] & 0xff) == 37) { // % comment marker
skipLine();
continue;
}
final String line = getNextLine().trim();
if (line.isEmpty()) {
continue;
}
if (line.contains("begincodespacerange")) { // <00> <80>
final String[] nn = line.split(" ");
count = Integer.parseInt(nn[0]);
codeSpaceRange = new long[count][2];
for (int i = 0; i < count; i++) {
final long start = getIntOrHex();
final long end = getIntOrHex();
codeSpaceRange[i][0] = start;
codeSpaceRange[i][1] = end;
}
} else if (line.contains("begincidrange")) { // <8141> <8142> 7887
final String[] nn = line.split(" ");
count = Integer.parseInt(nn[0]);
for (int i = 0; i < count; i++) {
final long start = getIntOrHex();
final long end = getIntOrHex();
final int cid = (int) getIntOrHex();
final long v = (start << 32L) | end;
cidRange.put(v, cid);
}
} else if (line.contains("begincidchar")) { // <8143> 8286
final String[] nn = line.split(" ");
count = Integer.parseInt(nn[0]);
for (int i = 0; i < count; i++) {
final long start = getIntOrHex();
final int cid = (int) getIntOrHex();
final long v = (start << 32L) | start;
cidRange.put(v, cid);
}
} else if (line.contains("beginnotdefrange")) { // <00> <1f>1
final String[] nn = line.split(" ");
count = Integer.parseInt(nn[0]);
for (int i = 0; i < count; i++) {
final long start = getIntOrHex();
final long end = getIntOrHex();
final int cid = (int) getIntOrHex();
final long v = (start << 32L) | end;
notDefRange.put(v, cid);
}
} else if (line.contains("beginnotdefchar")) { // <8143> 8286
final String[] nn = line.split(" ");
count = Integer.parseInt(nn[0]);
for (int i = 0; i < count; i++) {
final long start = getIntOrHex();
final int cid = (int) getIntOrHex();
final long v = (start << 32L) | start;
notDefRange.put(v, cid);
}
} else if (line.contains("beginbfrange")) { // <8141> <8142> 7887
final String[] nn = line.split(" ");
count = Integer.parseInt(nn[0]);
for (int i = 0; i < count; i++) {
final long start = getIntOrHex();
final long end = getIntOrHex();
final int cid = (int) getIntOrHex();
final long v = (start << 32L) | end;
bfRange.put(v, cid);
}
} else if (line.contains("beginbfchar")) { // <8143> 8286
final String[] nn = line.split(" ");
count = Integer.parseInt(nn[0]);
for (int i = 0; i < count; i++) {
final long start = getIntOrHex();
final int cid = (int) getIntOrHex();
final long v = (start << 32L) | start;
bfRange.put(v, cid);
}
}
}
}
public boolean isInCodeSpaceRange(final int v) {
for (final long[] ls : codeSpaceRange) {
if (v >= ls[0] && v <= ls[1]) {
return true;
}
}
return false;
}
public int getCIDValue(final int unicode) {
for (final Long key : cidRange.keySet()) {
final int start = (int) (key >>> 32);
final int end = (int) (key & 0xffffffffL);
if (unicode >= start && unicode <= end) {
final int v = cidRange.get(key);
return v + (unicode - start);
}
}
return 0;
}
public int getUnicodeValue(final int cid) {
for (final Long key : bfRange.keySet()) {
final int start = (int) (key >>> 32);
final int end = (int) (key & 0xffffffffL);
if (cid >= start && cid <= end) {
final int v = bfRange.get(key);
return v + (cid - start);
}
}
return 0;
}
private long getIntOrHex() {
int v;
final StringBuilder sb = new StringBuilder();
while (p < len) {
v = cmapData[p] & 0xff;
if (v == 60) {
p++;
while (p < len) {
v = cmapData[p++] & 0xff;
if (v == 62) {
break;
}
sb.append((char) v);
}
String str = sb.toString();
if (str.length() > 4) {
str = str.substring(0, 4);
}
return Long.parseLong(str, 16);
// return Long.parseLong(sb.toString(), 16);
} else if (isDigit(v)) {
while (p < len) {
v = cmapData[p++] & 0xff;
if (!isDigit(v)) {
break;
}
sb.append((char) v);
}
return Long.parseLong(sb.toString());
} else {
p++;
}
}
return 0;
}
private String getNextLine() {
final StringBuilder bb = new StringBuilder();
int v = cmapData[p++] & 0xff;
OUTER:
while (p < len) {
switch (v) {
case 0xd:
if (p < len && (cmapData[p] & 0xff) == 0xa) {
p++;
}
break OUTER;
case 0xa:
break OUTER;
default:
bb.append((char) v);
v = cmapData[p++] & 0xff;
break;
}
}
return bb.toString();
}
private void skipLine() {
int v = cmapData[p++] & 0xff;
while (p < len) {
switch (v) {
case -1:
case 0xa:
return;
case 0xd:
if (p < len && (cmapData[p] & 0xff) == 0xa) {
p++;
}
return;
default:
v = cmapData[p++] & 0xff;
}
}
}
private static boolean isDigit(final int ch) {
return CHAR256[ch] == 4;
}
public CmapEncoding getCmapEncoding() {
return cmapEncoding;
}
public void setCmapEncoding(final CmapEncoding cmapEncoding) {
this.cmapEncoding = cmapEncoding;
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append("codespacerange \n");
for (final long[] codeSpaceRange1 : codeSpaceRange) {
sb.append(codeSpaceRange1[0]).append(" ... ").append(codeSpaceRange1[1]).append('\n');
}
sb.append("cidrange \n");
for (final Long key : cidRange.keySet()) {
final int start = (int) (key >>> 32);
final int end = (int) (key & 0xffffffffL);
final int v = cidRange.get(key);
sb.append(start).append(" ... ").append(end).append(" ==> ").append(v).append('\n');
}
return sb.toString();
}
public void printTableCIDtoUNI() {
for (final Long key : bfRange.keySet()) {
final int start = (int) (key >>> 32);
final int end = (int) (key & 0xffffffffL);
final long uniStart = bfRange.get(key);
final String ss = Long.toHexString(start);
final String ee = Long.toHexString(end);
final String uu = Long.toHexString(uniStart);
System.out.println(ss + ' ' + ee + ' ' + uu);
}
}
}
// public static boolean isEOL(final int ch) {
// return ch == 0xa || ch == 0xd;
// }
//
// public static boolean isDelimiter(final int ch) {
// return CHAR256[ch] == 2;
// }
//
// public static boolean isComment(final int ch) {
// return ch == 0x25;
// }
//
// public static boolean isWhiteSpace(final int ch) {
// return CHAR256[ch] == 1;
// }