Source: kurl.h


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/* This file is part of the KDE libraries
 *  Copyright (C) 1999 Torben Weis 
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Library General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU Library General Public License
 *  along with this library; see the file COPYING.LIB.  If not, write to
 *  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 *  Boston, MA 02111-1307, USA.
 **/

#ifndef __kurl_h__
#define __kurl_h__ "$Id: kurl_h.html 132191 2002-01-17 21:32:13Z dfaure $"

#include 
#include 

class QUrl;
class QStringList;

struct KURLPrivate;

/**
 * Represent and parse a URL.
 *
 * A prototypical URL looks like:
 * 
 *   protocol:/user:password@hostname:port/path/to/file.ext#reference
 * 
* * @ref KURL has some restrictions regarding the path * encoding. @ref KURL works internally with the decoded path and * and encoded query. For example, *
 * http://localhost/cgi-bin/test%20me.pl?cmd=Hello%20you
 * 
* would result in a decoded path "/cgi-bin/test me.pl" * and in the encoded query "?cmd=Hello%20you". * Since path is internally always encoded you may @em not use * "%00" in the path, although this is OK for the query. * * @author Torben Weis */ class KURL { public: class List : public QValueList { public: List() { } List(const QStringList &); QStringList toStringList() const; }; /** * Construct an empty URL. */ KURL(); /** * destruktor */ ~KURL(); /** * Usual constructor, to construct from a string. * @param url A URL, not a filename. If the URL does not have a protocol * part, "file:" is assumed. * It is dangerous to feed unix filenames into this function, * this will work most of the time but not always. * For example "/home/Torben%20Weis" will be considered a URL * pointing to the file "/home/Torben Weis" instead of to the * file "/home/Torben%20Weis". * This means that if you have a usual UNIX like path you * should not use this constructor. * Instead create an empty url and set the path by using * @ref setPath(). * @param encoding_hint Reserved, should be 0. */ KURL( const QString& url, int encoding_hint = 0 ); /** * Constructor taking a char * @p url, which is an _encoded_ representation * of the URL, exactly like the usual constructor. This is useful when * then URL, in its encoded form, is strictly ascii. */ KURL( const char * url, int encoding_hint = 0 ); /** * Copy constructor */ KURL( const KURL& u ); /** * Convert from a @ref QUrl. */ KURL( const QUrl &u ); /** * Constructor allowing relative URLs. * * @param _baseurl The base url. * @param _rel_url A relative or absolute URL. * If this is an absolute URL then @p _baseurl will be ignored. * If this is a relative URL it will be combined with @p _baseurl. * Note that _rel_url should be encoded too, in any case. * So do NOT pass a path here (use setPath or addPath instead). * @param encoding_hint Reserved, should be 0. */ KURL( const KURL& _baseurl, const QString& _rel_url, int encoding_hint=0 ); /** * Retrieve the protocol for the URL (i.e., file, http, etc.). **/ QString protocol() const { return m_bIsMalformed ? QString::null : m_strProtocol; } /** * Set the protocol for the URL (i.e., file, http, etc.) **/ void setProtocol( const QString& _txt ); /** * Retrieve the decoded user name (login, user id, ...) included in the URL. **/ QString user() const { return m_strUser; } /** * Set the user name (login, user id, ...) included the URL. * * Special characters in the user name will appear encoded in the URL. **/ void setUser( const QString& _txt ); /** * Test to see if this URL has a user name included in it. **/ bool hasUser() const { return !m_strUser.isEmpty(); } /** * Retrieve the decoded password (corresponding to @ref user()) included in the URL. **/ QString pass() const { return m_strPass; } /** * Set the password (corresponding to @ref user()) included in the URL. * * Special characters in the password will appear encoded in the URL. **/ void setPass( const QString& _txt ); /** * Test to see if this URL has a password included in it. **/ bool hasPass() const { return !m_strPass.isEmpty(); } /** * Retrieve the decoded hostname included in the URL. **/ QString host() const { return m_strHost; } /** * Set the hostname included in the URL. * * Special characters in the hostname will appear encoded in the URL. **/ void setHost( const QString& _txt ); /** * Test to see if this URL has a hostname included in it. **/ bool hasHost() const { return !m_strHost.isEmpty(); } /** * Retrieve the port number included in the URL. * If there is no port number specified in the URL, returns 0. **/ unsigned short int port() const { return m_iPort; } /** * Set the port number included in the URL. **/ void setPort( unsigned short int _p ); /** * @return The current decoded path. This does @em not include the query. * */ QString path() const { return m_strPath; } /** * @param _trailing May be ( -1, 0 +1 ). -1 strips a trailing '/', +1 adds * a trailing '/' if there is none yet and 0 returns the * path unchanged. If the URL has no path, then no '/' is added * anyway. And on the other side: If the path is "/", then this * character won't be stripped. Reason: "ftp://weis@host" means something * completely different than "ftp://weis@host/". So adding or stripping * the '/' would really alter the URL, while "ftp://host/path" and * "ftp://host/path/" mean the same directory. * * @return The current decoded path. This does not include the query. */ QString path( int _trailing ) const; /** * path This is considered to be decoded. This means: %3f does not become decoded * and the ? does not indicate the start of the query part. * The query is not changed by this function. */ void setPath( const QString& path ); /** * Test to see if this URL has a path is included in it. **/ bool hasPath() const { return !m_strPath.isEmpty(); } /** Removes all multiple directory separators ('/') and * resolves any "." or ".." found in the path. * Calls @ref QDir::cleanDirPath but saves the trailing slash if any. */ void cleanPath(); /** * Same as above except it takes a flag that allows you * to ignore the clean up of the multiple directory separators. * * Some servers seem not to like the removal of extra '/' * eventhough it is against the specification in RFC 2396. */ void cleanPath(bool cleanDirSeparator); /** * This is useful for HTTP. It looks first for '?' and decodes then. * The encoded path is the concatenation of the current path and the query. * @param encoding_hint Reserved, should be 0. */ void setEncodedPathAndQuery( const QString& _txt, int encoding_hint = 0 ); /** * @return The concatenation if the encoded path , '?' and the encoded query. * * @param _no_empty_path If set to true then an empty path is substituted by "/". * @param encoding_hint Reserved, should be 0. */ QString encodedPathAndQuery( int _trailing = 0, bool _no_empty_path = false, int encoding_hint = 0) const; /** * @param _txt This is considered to be encoded. This has a good reason: * The query may contain the 0 character. * * The query should start with a '?'. If it doesn't '?' is prepended. * @param encoding_hint Reserved, should be 0. */ void setQuery( const QString& _txt, int encoding_hint = 0); /** * @return The encoded query. * This has a good reason: The query may contain the 0 character. * If a query is present it always starts with a '?'. * A single '?' means an empty query. * An empty string means no query. */ QString query() const { return m_strQuery_encoded; } /** * The reference is @em never decoded automatically. */ QString ref() const { return m_strRef_encoded; } /** * Set the reference part (everything after '#'). * @param _txt is considered encoded. */ void setRef( const QString& _txt ) { m_strRef_encoded = _txt; } /** * @return @p true if the reference part of the URL is not empty. In a URL like * http://www.kde.org/kdebase.tar#tar:/README it would return @p true, too. */ bool hasRef() const { return !m_strRef_encoded.isEmpty(); } /** * @return The HTML-style reference. */ QString htmlRef() const; /** * @return The HTML-style reference in its original form. */ QString encodedHtmlRef() const; /** * Set the HTML-style reference. * * @param _ref This is considered to be @em not encoded in contrast to @ref setRef() * * @see htmlRef() */ void setHTMLRef( const QString& _ref ); /** * @return @p true if the URL has an HTML-style reference. * * @see htmlRef() */ bool hasHTMLRef() const; /** * @return @p false if the URL is malformed. This function does @em not test * whether sub URLs are well-formed, too. */ bool isValid() const { return !m_bIsMalformed; } /** * @deprecated */ bool isMalformed() const { return !isValid(); } /** * @return @p true if the file is a plain local file and has no filter protocols * attached to it. */ bool isLocalFile() const; /** * @return @p true if the file has at least one sub URL. * Use @ref split() to get the sub URLs. */ bool hasSubURL() const; /** * Add to the current path. * Assumes that the current path is a directory. @p _txt is appended to the * current path. The function adds '/' if needed while concatenating. * This means it does not matter whether the current path has a trailing * '/' or not. If there is none, it becomes appended. If @p _txt * has a leading '/' then this one is stripped. * * @param _txt This is considered to be decoded */ void addPath( const QString& _txt ); /** * In comparison to @ref addPath() this function does not assume that the current path * is a directory. This is only assumed if the current path ends with '/'. * * Any reference is reset. * * @param _txt This is considered to be decoded. If the current path ends with '/' * then @p _txt ist just appended, otherwise all text behind the last '/' * in the current path is erased and @p _txt is appended then. It does * not matter whether @p _txt starts with '/' or not. */ void setFileName( const QString&_txt ); /** * @return The filename of the current path. The returned string is decoded. * * @param _ignore_trailing_slash_in_path This tells whether a trailing '/' should be ignored. * This means that the function would return "torben" for * file:/hallo/torben/ and file:/hallo/torben. * If the flag is set to false, then everything behind the last '/' * is considered to be the filename. */ QString fileName( bool _ignore_trailing_slash_in_path = true ) const; QString filename( bool _ignore_trailing_slash_in_path = true ) const { return fileName(_ignore_trailing_slash_in_path); } /** * @return The directory part of the current path. Everything between the last and the second last '/' * is returned. For example file:/hallo/torben/ would return "/hallo/torben/" while * file:/hallo/torben would return "hallo/". The returned string is decoded. * * @param _strip_trailing_slash_from_result tells whether the returned result should end with '/' or not. * If the path is empty or just "/" then this flag has no effect. * @param _ignore_trailing_slash_in_path means that file:/hallo/torben and * file:/hallo/torben/" would both return /hallo/ * or /hallo depending on the other flag */ QString directory( bool _strip_trailing_slash_from_result = true, bool _ignore_trailing_slash_in_path = true ) const; /** * Change directory by descending into the given directory. * It is assumed the current URL represents a directory. * If @p dir starts with a "/" the * current URL will be "protocol://host/dir" otherwise @p _dir will * be appended to the path. @p _dir can be ".." * This function won't strip protocols. That means that when you are in * file:/dir/dir2/my.tgz#tar:/ and you do cd("..") you will * still be in file:/dir/dir2/my.tgz#tar:/ * * @return true */ bool cd( const QString& _dir ); /** * @return The complete URL, with all escape sequences intact. * Example: http://localhost:8080/test.cgi?test=hello%20world&name=fred * * @param _trailing This may be ( -1, 0 +1 ). -1 strips a trailing '/' from the path, +1 adds * a trailing '/' if there is none yet and 0 returns the * path unchanged. */ QString url( int _trailing = 0 ) const; /** * @return The complete URL, with all escape sequences intact, encoded * in a given charset. * This is used in particular for encoding URLs in UTF-8 before using them * in a drag and drop operation. * * @param _trailing This may be ( -1, 0 +1 ). -1 strips a trailing '/' from the path, +1 adds * a trailing '/' if there is none yet and 0 returns the * path unchanged. * @param encoding_hint The charset to use for encoding (see QFont::Charset). */ QString url( int _trailing, int encoding_hint ) const; /** * @return A human readable URL, with no non-necessary encodings/escaped * characters. * Example: http://localhost:8080/test.cgi?test=hello world&name=fred */ QString prettyURL( int _trailing = 0) const; /** * Test to see if the @ref KURL is empty. **/ bool isEmpty() const; /** * This function is useful to implement the "Up" button in a file manager for example. * @ref cd() never strips a sub-protocol. That means that if you are in * file:/home/x.tgz#gzip:/#tar:/ and hit the up button you expect to see * file:/home. The algorithm tries to go up on the right-most URL. If that is not * possible it strips the right most URL. It continues stripping URLs. */ KURL upURL( ) const; KURL& operator=( const KURL& _u ); KURL& operator=( const QString& _url ); KURL& operator=( const char * _url ); KURL& operator=( const QUrl & u ); bool operator==( const KURL& _u ) const; bool operator==( const QString& _u ) const; bool operator!=( const KURL& _u ) const { return !( *this == _u ); } bool operator!=( const QString& _u ) const { return !( *this == _u ); } /** * Compare this url with @p u * @param ignore_trailing set to true to ignore trailing '/' characters. * @return true if both urls are the same * @see operator==. This function should be used if you want to * ignore trailing '/' characters. */ bool cmp( const KURL &u, bool ignore_trailing = false ) const; /** * @return true if this url is a parent of @p u (or the same URL as @p u) * For instance, ftp://host/dir/ is a parent of ftp://host/dir/subdir/subsubdir/. */ bool isParentOf( const KURL& u ) const; /** * Splits nested URLs like file:/home/weis/kde.tgz#gzip:/#tar:/kdebase * A URL like http://www.kde.org#tar:/kde/README.hml#ref1 will be split in * http://www.kde.org and tar:/kde/README.html#ref1. * That means in turn that "#ref1" is an HTML-style reference and not a new sub URL. * Since HTML-style references mark * a certain position in a document this reference is appended to every URL. * The idea behind this is that browsers, for example, only look at the first URL while * the rest is not of interest to them. * * @return An empty list on error or the list of split URLs. * * @param _url The URL that has to be split. */ static List split( const QString& _url ); /** * A convenience function. */ static List split( const KURL& _url ); /** * Reverses @ref split(). Only the first URL may have a reference. This reference * is considered to be HTML-like and is appended at the end of the resulting * joined URL. */ static KURL join( const List& _list ); /** * Convenience function * * Convert unicoded string to local encoding and use %-style * encoding for all common delimiters / non-ascii characters. * @param str String to encode * @param encoding_hint Reserved, should be 0. **/ static QString encode_string(const QString &str, int encoding_hint = 0); /** * Convenience function * * Convert unicoded string to local encoding and use %-style * encoding for all common delimiters / non-ascii characters * as well as the slash '/'. * @param str String to encode * @param encoding_hint Reserved, should be 0. **/ static QString encode_string_no_slash(const QString &str, int encoding_hint = 0); /** * Convenience function * * Decode %-style encoding and convert from local encoding to unicode. * * Revers of encode_string() * @param str String to decode * @param encoding_hint Reserved, should be 0. **/ static QString decode_string(const QString &str, int encoding_hint = 0); /** * Convenience function * * Returns whether '_url' is likely to be a "relative" URL instead of * an "absolute" URL. * @param _url URL to examine * @return true when the URL is likely to be "relative", false otherwise. */ static bool isRelativeURL(const QString &_url); protected: void reset(); void parse( const QString& _url, int encoding_hint = 0); private: QString m_strProtocol; QString m_strUser; QString m_strPass; QString m_strHost; QString m_strPath; QString m_strRef_encoded; QString m_strQuery_encoded; KURLPrivate* d; bool m_bIsMalformed : 1; int freeForUse : 7; unsigned short int m_iPort; QString m_strPath_encoded; friend QDataStream & operator<< (QDataStream & s, const KURL & a); friend QDataStream & operator>> (QDataStream & s, KURL & a); }; /** * Compares URLs. They are parsed, split and compared. * Two malformed URLs with the same string representation * are nevertheless considered to be unequal. * That means no malformed URL equals anything else. */ bool urlcmp( const QString& _url1, const QString& _url2 ); /** * Compares URLs. They are parsed, split and compared. * Two malformed URLs with the same string representation * are nevertheless considered to be unequal. * That means no malformed URL equals anything else. * * @param _ignore_trailing Described in @ref KURL::cmp * @param _ignore_ref If @p true, disables comparison of HTML-style references. */ bool urlcmp( const QString& _url1, const QString& _url2, bool _ignore_trailing, bool _ignore_ref ); QDataStream & operator<< (QDataStream & s, const KURL & a); QDataStream & operator>> (QDataStream & s, KURL & a); #endif

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