Application: gvSIG desktop

package org.gvsig.installer.lib.impl;

import java.text.MessageFormat;

import org.gvsig.installer.lib.api.Dependency;

import org.gvsig.installer.lib.api.PackageInfo;

import org.gvsig.installer.lib.api.Version;

import org.gvsig.tools.exception.BaseRuntimeException;

import org.gvsig.tools.packageutils.StringWithAlias;

public class DefaultDependency implements Dependency {

        private String type;

        private String code;

        private String op;

        private Version version;

        public DefaultDependency() {

                super();

                clear();

        }

        public DefaultDependency(PackageInfo packageInfo) {

                this();

                this.code = packageInfo.getCode();

                this.type = "required";

                this.op = ">=";

                this.version = packageInfo.getVersion();

        }

        public void clear() {

                this.type = "required";

                this.code = "unknow";

                this.op = "=";

                this.version = new DefaultVersion();

        }

        public Dependency parse(String dependency) {

                // Parse a string with the dependency specification

                // (required|suggested|recommended|conflict)[:] code (=|>|<|>=|<=)

                // version

                if (dependency == null) {

                        this.clear();

                        return this;

                }

                dependency = dependency.trim();

                if (dependency.equals("")) {

                        this.clear();

                        return this;

                }

                String s = dependency;

                /*

                 * Remove special characters, so

                 * dependency description in pom.xml is not

                 * so fragile

                 */

        s = s.replace('\n', ' ');

        s = s.replace('\t', ' ');

        s = s.replace('\r', ' ');

        s = s.replace(':', ' ');

        /*

         * Added loop because replaceAll is not

         * exhaustive in this case

         */

        while (s.indexOf("  ") != -1) {

            s = s.replaceAll("  ", " ");

        }

                String[] x = s.split(" ");

                if (x.length != 4) {

                        throw new InvalidDependencyFormatException(dependency);

                }

                this.type = x[0];

                this.code = x[1];

                this.op = x[2];

                this.version.parse(x[3]);

                return this;

        }

        private class InvalidDependencyFormatException extends BaseRuntimeException {

                private static final long serialVersionUID = 2856837862117653856L;

                private static final String message = "Error parsing dependecy '%(dependency)s'";

                private static final String KEY = "_Error_parsing_dependecy_XdependecyX";

                public InvalidDependencyFormatException(String dependency) {

                        super(message, null, KEY, serialVersionUID);

                        setValue("dependency", dependency);

                }

        }

        public String getType() {

                return this.type;

        }

        public String getCode() {

                return this.code;

        }

        public String getOp() {

                return this.op;

        }

        public Version getVersion() {

                return this.version;

        }

        public boolean match(String type, String code, Version version) {

                if (!this.type.equalsIgnoreCase(type)) {

                        return false;

                }

                if (!this.code.equalsIgnoreCase(code)) {

                        return false;

                }

                return version.check(this.op, this.version);

        }

        public boolean match(String type, StringWithAlias code, Version version) {

                if (!this.type.equalsIgnoreCase(type)) {

                        return false;

                }

                if (!code.equalsIgnoreCase(this.code)) {

                        return false;

                }

                return version.check(this.op, this.version);

        }

        @Override

        public String toString() {

                return MessageFormat.format("{0}: {1} {2} {3}", this.type, this.code,

                                this.op, this.version.toString());

        }

        @Override

        public Object clone() throws CloneNotSupportedException {

                DefaultDependency x = (DefaultDependency) super.clone();

                x.version = (Version) this.version.clone();

                return x;

        }

        @Override

        public boolean equals(Object obj) {

                Dependency other;

                try {

                        other = (Dependency) obj;

                } catch (Exception ex) {

                        return false;

                }

                if (!this.code.equalsIgnoreCase(other.getCode())) {

                        return false;

                }

                if (!this.type.equalsIgnoreCase(other.getType())) {

                        return false;

                }

                if (!this.op.equalsIgnoreCase(other.getOp())) {

                        return false;

                }

                if (!this.version.equals(other.getVersion())) {

                        return false;

                }

                return true;

        }

        /* (non-Javadoc)

         * @see java.lang.Object#hashCode()

         */

        @Override

        public int hashCode() {

            return version.hashCode() + code.hashCode()

                + type.hashCode() + op.hashCode();

        }

}