Xinwen Deng / aem-src

/*
 * Decompiled with CFR 0_118.
 */
package com.adobe.internal.xmp.impl;

import com.adobe.internal.xmp.XMPException;

class ParseState {
    private String str;
    private int pos = 0;

    public ParseState(String str) {
        this.str = str;
    }

    public int length() {
        return this.str.length();
    }

    public boolean hasNext() {
        return this.pos < this.str.length();
    }

    public char ch(int index) {
        return index < this.str.length() ? this.str.charAt(index) : '\u0000';
    }

    public char ch() {
        return this.pos < this.str.length() ? this.str.charAt(this.pos) : '\u0000';
    }

    public void skip() {
        ++this.pos;
    }

    public int pos() {
        return this.pos;
    }

    public int gatherInt(String errorMsg, int maxValue) throws XMPException {
        int value = 0;
        boolean success = false;
        char ch = this.ch(this.pos);
        while ('0' <= ch && ch <= '9') {
            value = value * 10 + (ch - 48);
            success = true;
            ++this.pos;
            ch = this.ch(this.pos);
        }
        if (success) {
            if (value > maxValue) {
                return maxValue;
            }
            if (value < 0) {
                return 0;
            }
            return value;
        }
        throw new XMPException(errorMsg, 5);
    }
}