xmlentityscanner.java

来自「JAVA的一些源码 JAVA2 STANDARD EDITION DEVELO」· Java 代码 · 共 1,660 行 · 第 1/5 页

                    fCurrentEntity.ch = tmp;
                }
                else {
                    System.arraycopy(fCurrentEntity.ch, offset,
                                     fCurrentEntity.ch, 0, length);
                }
                offset = 0;
                if (load(length, false)) {
                    break;
                }
            }
        }
        int length = fCurrentEntity.position - offset;
        fCurrentEntity.columnNumber += length;

        // return nmtoken
        String symbol = null;
        if (length > 0) {
            symbol = fSymbolTable.addSymbol(fCurrentEntity.ch, offset, length);
        }
        if (DEBUG_BUFFER) {
            System.out.print(")scanNmtoken: ");
            XMLEntityManager.print(fCurrentEntity);
            System.out.println(" -> "+String.valueOf(symbol));
        }
        return symbol;

    } // scanNmtoken():String

    /**
     * Returns a string matching the Name production appearing immediately
     * on the input as a symbol, or null if no Name string is present.
     * <p>
     * <strong>Note:</strong> The Name characters are consumed.
     * <p>
     * <strong>Note:</strong> The string returned must be a symbol. The
     * SymbolTable can be used for this purpose.
     *
     * @throws IOException  Thrown if i/o error occurs.
     * @throws EOFException Thrown on end of file.
     *
     * @see com.sun.org.apache.xerces.internal.util.SymbolTable
     * @see com.sun.org.apache.xerces.internal.util.XMLChar#isName
     * @see com.sun.org.apache.xerces.internal.util.XMLChar#isNameStart
     */
    public String scanName() throws IOException {
        if (DEBUG_BUFFER) {
            System.out.print("(scanName: ");
            XMLEntityManager.print(fCurrentEntity);
            System.out.println();
        }

        // load more characters, if needed
        if (fCurrentEntity.position == fCurrentEntity.count) {
            load(0, true);
        }

        // scan name
        int offset = fCurrentEntity.position;
        if (XMLChar.isNameStart(fCurrentEntity.ch[offset])) {
            if (++fCurrentEntity.position == fCurrentEntity.count) {
                fCurrentEntity.ch[0] = fCurrentEntity.ch[offset];
                offset = 0;
                if (load(1, false)) {
                    fCurrentEntity.columnNumber++;
                    String symbol = fSymbolTable.addSymbol(fCurrentEntity.ch, 0, 1);
                    if (DEBUG_BUFFER) {
                        System.out.print(")scanName: ");
                        XMLEntityManager.print(fCurrentEntity);
                        System.out.println(" -> "+String.valueOf(symbol));
                    }
                    return symbol;
                }
            }
            while (XMLChar.isName(fCurrentEntity.ch[fCurrentEntity.position])) {
                if (++fCurrentEntity.position == fCurrentEntity.count) {
                    int length = fCurrentEntity.position - offset;
                    if (length == fCurrentEntity.ch.length) {
                        // bad luck we have to resize our buffer
                        char[] tmp = new char[fCurrentEntity.ch.length << 1];
                        System.arraycopy(fCurrentEntity.ch, offset,
                                         tmp, 0, length);
                        fCurrentEntity.ch = tmp;
                    }
                    else {
                        System.arraycopy(fCurrentEntity.ch, offset,
                                         fCurrentEntity.ch, 0, length);
                    }
                    offset = 0;
                    if (load(length, false)) {
                        break;
                    }
                }
            }
        }
        int length = fCurrentEntity.position - offset;
        fCurrentEntity.columnNumber += length;

        // return name
        String symbol = null;
        if (length > 0) {
            symbol = fSymbolTable.addSymbol(fCurrentEntity.ch, offset, length);
        }
        if (DEBUG_BUFFER) {
            System.out.print(")scanName: ");
            XMLEntityManager.print(fCurrentEntity);
            System.out.println(" -> "+String.valueOf(symbol));
        }
        return symbol;

    } // scanName():String

    /**
     * Returns a string matching the NCName production appearing immediately
     * on the input as a symbol, or null if no NCName string is present.
     * <p>
     * <strong>Note:</strong> The NCName characters are consumed.
     * <p>
     * <strong>Note:</strong> The string returned must be a symbol. The
     * SymbolTable can be used for this purpose.
     *
     * @throws IOException  Thrown if i/o error occurs.
     * @throws EOFException Thrown on end of file.
     *
     * @see com.sun.org.apache.xerces.internal.util.SymbolTable
     * @see com.sun.org.apache.xerces.internal.util.XMLChar#isNCName
     * @see com.sun.org.apache.xerces.internal.util.XMLChar#isNCNameStart
     */
    public String scanNCName() throws IOException {
        if (DEBUG_BUFFER) {
            System.out.print("(scanNCName: ");
            XMLEntityManager.print(fCurrentEntity);
            System.out.println();
        }

        // load more characters, if needed
        if (fCurrentEntity.position == fCurrentEntity.count) {
            load(0, true);
        }

        // scan name
        int offset = fCurrentEntity.position;
        if (XMLChar.isNCNameStart(fCurrentEntity.ch[offset])) {
            if (++fCurrentEntity.position == fCurrentEntity.count) {
                fCurrentEntity.ch[0] = fCurrentEntity.ch[offset];
                offset = 0;
                if (load(1, false)) {
                    fCurrentEntity.columnNumber++;
                    String symbol = fSymbolTable.addSymbol(fCurrentEntity.ch, 0, 1);
                    if (DEBUG_BUFFER) {
                        System.out.print(")scanNCName: ");
                        XMLEntityManager.print(fCurrentEntity);
                        System.out.println(" -> "+String.valueOf(symbol));
                    }
                    return symbol;
                }
            }
            while (XMLChar.isNCName(fCurrentEntity.ch[fCurrentEntity.position])) {
                if (++fCurrentEntity.position == fCurrentEntity.count) {
                    int length = fCurrentEntity.position - offset;
                    if (length == fCurrentEntity.ch.length) {
                        // bad luck we have to resize our buffer
                        char[] tmp = new char[fCurrentEntity.ch.length << 1];
                        System.arraycopy(fCurrentEntity.ch, offset,
                                         tmp, 0, length);
                        fCurrentEntity.ch = tmp;
                    }
                    else {
                        System.arraycopy(fCurrentEntity.ch, offset,
                                         fCurrentEntity.ch, 0, length);
                    }
                    offset = 0;
                    if (load(length, false)) {
                        break;
                    }
                }
            }
        }
        int length = fCurrentEntity.position - offset;
        fCurrentEntity.columnNumber += length;

        // return name
        String symbol = null;
        if (length > 0) {
            symbol = fSymbolTable.addSymbol(fCurrentEntity.ch, offset, length);
        }
        if (DEBUG_BUFFER) {
            System.out.print(")scanNCName: ");
            XMLEntityManager.print(fCurrentEntity);
            System.out.println(" -> "+String.valueOf(symbol));
        }
        return symbol;

    } // scanNCName():String

    /**
     * Scans a qualified name from the input, setting the fields of the
     * QName structure appropriately.
     * <p>
     * <strong>Note:</strong> The qualified name characters are consumed.
     * <p>
     * <strong>Note:</strong> The strings used to set the values of the
     * QName structure must be symbols. The SymbolTable can be used for
     * this purpose.
     *
     * @param qname The qualified name structure to fill.
     *
     * @return Returns true if a qualified name appeared immediately on
     *         the input and was scanned, false otherwise.
     *
     * @throws IOException  Thrown if i/o error occurs.
     * @throws EOFException Thrown on end of file.
     *
     * @see com.sun.org.apache.xerces.internal.util.SymbolTable
     * @see com.sun.org.apache.xerces.internal.util.XMLChar#isName
     * @see com.sun.org.apache.xerces.internal.util.XMLChar#isNameStart
     */
    public boolean scanQName(QName qname) throws IOException {
        if (DEBUG_BUFFER) {
            System.out.print("(scanQName, "+qname+": ");
            XMLEntityManager.print(fCurrentEntity);
            System.out.println();
        }

        // load more characters, if needed
        if (fCurrentEntity.position == fCurrentEntity.count) {
            load(0, true);
        }

        // scan qualified name
        int offset = fCurrentEntity.position;
        if (XMLChar.isNCNameStart(fCurrentEntity.ch[offset])) {
            if (++fCurrentEntity.position == fCurrentEntity.count) {
                fCurrentEntity.ch[0] = fCurrentEntity.ch[offset];
                offset = 0;
                if (load(1, false)) {
                    fCurrentEntity.columnNumber++;
                    String name =
                        fSymbolTable.addSymbol(fCurrentEntity.ch, 0, 1);
                    qname.setValues(null, name, name, null);
                    if (DEBUG_BUFFER) {
                        System.out.print(")scanQName, "+qname+": ");
                        XMLEntityManager.print(fCurrentEntity);
                        System.out.println(" -> true");
                    }
                    return true;
                }
            }
            int index = -1;
            while (XMLChar.isName(fCurrentEntity.ch[fCurrentEntity.position])) {
                char c = fCurrentEntity.ch[fCurrentEntity.position];

                if (c == ':') {
                    if (index != -1) {
                        break;
                    }
                    index = fCurrentEntity.position;
                }
                if (++fCurrentEntity.position == fCurrentEntity.count) {
                    int length = fCurrentEntity.position - offset;
                    if (length == fCurrentEntity.ch.length) {
                        // bad luck we have to resize our buffer
                        char[] tmp = new char[fCurrentEntity.ch.length << 1];
                        System.arraycopy(fCurrentEntity.ch, offset,
                                         tmp, 0, length);
                        fCurrentEntity.ch = tmp;
                    }
                    else {
                        System.arraycopy(fCurrentEntity.ch, offset,
                                         fCurrentEntity.ch, 0, length);
                    }
                    if (index != -1) {
                        index = index - offset;
                    }
                    offset = 0;
                    if (load(length, false)) {
                        break;
                    }
                }
            }
            int length = fCurrentEntity.position - offset;
            fCurrentEntity.columnNumber += length;
            if (length > 0) {
                String prefix = null;
                String localpart = null;
                String rawname = fSymbolTable.addSymbol(fCurrentEntity.ch,
                                                        offset, length);
                if (index != -1) {
                    int prefixLength = index - offset;
                    prefix = fSymbolTable.addSymbol(fCurrentEntity.ch,
                                                    offset, prefixLength);
                    int len = length - prefixLength - 1;
                    int startLocal = index +1;
                    if (!XMLChar.isNCNameStart(fCurrentEntity.ch[startLocal])){
                        fErrorReporter.reportError(XMLMessageFormatter.XML_DOMAIN,
                                                 "IllegalQName",
                                                  null,
                                                  XMLErrorReporter.SEVERITY_FATAL_ERROR);
                    }
                    localpart = fSymbolTable.addSymbol(fCurrentEntity.ch,
                                                       startLocal, len);

                }
                else {
                    localpart = rawname;
                }
                qname.setValues(prefix, localpart, rawname, null);
                if (DEBUG_BUFFER) {
                    System.out.print(")scanQName, "+qname+": ");
                    XMLEntityManager.print(fCurrentEntity);
                    System.out.println(" -> true");
                }
                return true;
            }
        }

        // no qualified name found
        if (DEBUG_BUFFER) {
            System.out.print(")scanQName, "+qname+": ");
            XMLEntityManager.print(fCurrentEntity);
            System.out.println(" -> false");
        }
        return false;

    } // scanQName(QName):boolean

    /**
     * Scans a range of parsed character data, setting the fields of the
     * XMLString structure, appropriately.
     * <p>
     * <strong>Note:</strong> The characters are consumed.
     * <p>