Example usage for org.apache.commons.compress.archivers.zip ExtraFieldUtils createExtraField

Introduction

In this page you can find the example usage for org.apache.commons.compress.archivers.zip ExtraFieldUtils createExtraField.

Prototype

public static ZipExtraField createExtraField(ZipShort headerId)
        throws InstantiationException, IllegalAccessException 

Source Link

Document

Create an instance of the approriate ExtraField, falls back to UnrecognizedExtraField UnrecognizedExtraField .

Usage

From source file:org.apache.ant.compress.taskdefs.ArchiveBase.java

/**
 * Extracts flags from a resource.//www.jav a2s  .  c o m
 *
 * <p>ZipExceptions are only here for the code that translates
 * Ant's ZipExtraFields to CC ZipExtraFields and should never
 * actually be thrown.</p>
 */
protected ResourceFlags getFlags(Resource r) throws ZipException {
    if (r instanceof ArchiveResource) {
        if (r instanceof CommonsCompressArchiveResource) {
            if (r instanceof TarResource) {
                TarResource tr = (TarResource) r;
                return new ResourceFlags(tr.getMode(), tr.getUid(), tr.getGid(), tr.getUserName(),
                        tr.getGroup());
            } else if (r instanceof ZipResource) {
                ZipResource zr = (ZipResource) r;
                return new ResourceFlags(zr.getMode(), zr.getExtraFields(), zr.getMethod());
            } else {
                CommonsCompressArchiveResource cr = (CommonsCompressArchiveResource) r;
                return new ResourceFlags(cr.getMode(), cr.getUid(), cr.getGid());
            }
        } else if (r instanceof org.apache.tools.ant.types.resources.TarResource) {
            org.apache.tools.ant.types.resources.TarResource tr = (org.apache.tools.ant.types.resources.TarResource) r;
            return new ResourceFlags(tr.getMode(), tr.getUid(), tr.getGid(), tr.getUserName(), tr.getGroup());
        } else if (r instanceof org.apache.tools.ant.types.resources.ZipResource) {
            org.apache.tools.ant.types.resources.ZipResource zr = (org.apache.tools.ant.types.resources.ZipResource) r;

            org.apache.tools.zip.ZipExtraField[] extra = zr.getExtraFields();
            ZipExtraField[] ex = new ZipExtraField[extra == null ? 0 : extra.length];
            if (extra != null && extra.length > 0) {
                for (int i = 0; i < extra.length; i++) {
                    try {
                        ex[i] = ExtraFieldUtils
                                .createExtraField(new ZipShort(extra[i].getHeaderId().getValue()));
                    } catch (InstantiationException e) {
                        throw new BuildException(e);
                    } catch (IllegalAccessException e) {
                        throw new BuildException(e);
                    }
                    byte[] b = extra[i].getCentralDirectoryData();
                    ex[i].parseFromCentralDirectoryData(b, 0, b.length);
                    b = extra[i].getLocalFileDataData();
                    ex[i].parseFromLocalFileData(b, 0, b.length);
                }
            }

            return new ResourceFlags(zr.getMode(), ex, zr.getMethod());
        } else {
            ArchiveResource ar = (ArchiveResource) r;
            return new ResourceFlags(ar.getMode());
        }
    }
    return new ResourceFlags();
}

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