mirror of
https://github.com/netsurf-browser/netsurf
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9100fcb409
Alter the handling of query values within nsurl to be like fragments. This ensures callers never have to care about the query punctuation, e.g. the question mark This also means the strings generated will no longer have trailing question marks which now conforms to behaviour in whatwg url spec on url serializing in section 4.5
373 lines
11 KiB
C
373 lines
11 KiB
C
/*
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* Copyright 2011 Michael Drake <tlsa@netsurf-browser.org>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** \file
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* NetSurf URL handling (interface).
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*/
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#ifndef _NETSURF_UTILS_NSURL_H_
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#define _NETSURF_UTILS_NSURL_H_
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#include <libwapcaplet/libwapcaplet.h>
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#include "utils/errors.h"
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/** NetSurf URL object */
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typedef struct nsurl nsurl;
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typedef enum nsurl_component {
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NSURL_SCHEME = (1 << 0),
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NSURL_USERNAME = (1 << 1),
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NSURL_PASSWORD = (1 << 2),
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NSURL_CREDENTIALS = NSURL_USERNAME | NSURL_PASSWORD,
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NSURL_HOST = (1 << 3),
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NSURL_PORT = (1 << 4),
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NSURL_AUTHORITY = NSURL_CREDENTIALS | NSURL_HOST | NSURL_PORT,
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NSURL_PATH = (1 << 5),
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NSURL_QUERY = (1 << 6),
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NSURL_COMPLETE = NSURL_SCHEME | NSURL_AUTHORITY |
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NSURL_PATH | NSURL_QUERY,
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NSURL_FRAGMENT = (1 << 7),
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NSURL_WITH_FRAGMENT = NSURL_COMPLETE | NSURL_FRAGMENT
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} nsurl_component;
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/**
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* Create a NetSurf URL object from a URL string
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*
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* \param url_s String to create NetSurf URL from
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* \param url Returns a NetSurf URL
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* \return NSERROR_OK on success, appropriate error otherwise
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*
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* If return value != NSERROR_OK, nothing will be returned in url.
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*
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* It is up to the client to call nsurl_unref when they are finished with
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* the created object.
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*/
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nserror nsurl_create(const char * const url_s, nsurl **url);
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/**
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* Increment the reference count to a NetSurf URL object
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*
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* \param url NetSurf URL to create another reference to
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* \return The NetSurf URL pointer to use as the copy
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*
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* Use this when copying a NetSurf URL into a persistent data structure.
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*/
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nsurl *nsurl_ref(nsurl *url);
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/**
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* Drop a reference to a NetSurf URL object
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*
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* \param url NetSurf URL to drop reference to
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*
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* When the reference count reaches zero then the NetSurf URL will be destroyed
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*/
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void nsurl_unref(nsurl *url);
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/**
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* Compare two URLs
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*
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* \param url1 First NetSurf URL
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* \param url2 Second NetSurf URL
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* \param parts The URL components to be compared
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* \return true on match else false
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*
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*/
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bool nsurl_compare(const nsurl *url1, const nsurl *url2, nsurl_component parts);
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/**
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* Get URL (section) as a string, from a NetSurf URL object
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*
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* \param url NetSurf URL
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* \param parts The required URL components.
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* \param url_s Returns a url string
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* \param url_l Returns length of url_s
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* \return NSERROR_OK on success, appropriate error otherwise
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*
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* If return value != NSERROR_OK, nothing will be returned in url_s or url_l.
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*
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* The string returned in url_s is owned by the client and it is up to them
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* to free it. It includes a trailing '\0'.
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*
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* The length returned in url_l excludes the trailing '\0'.
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*
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* That the required URL components be consecutive is not enforced, however,
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* non-consecutive URL components generally make no sense. The exception
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* is removal of credentials from a URL, such as for display in browser
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* window URL bar. 'NSURL_COMPLETE &~ NSURL_PASSWORD' would remove the
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* password from a complete URL.
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*/
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nserror nsurl_get(const nsurl *url, nsurl_component parts,
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char **url_s, size_t *url_l);
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/**
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* Get part of a URL as a lwc_string, from a NetSurf URL object
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*
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* \param url NetSurf URL object
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* \param part The URL component required
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* \return the required component as an lwc_string, or NULL
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*
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* The caller owns the returned lwc_string and should call lwc_string_unref
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* when they are done with it.
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*
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* The valid values for the part parameter are:
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* NSURL_SCHEME
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* NSURL_USERNAME
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* NSURL_PASSWORD
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* NSURL_HOST
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* NSURL_PORT
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* NSURL_PATH
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* NSURL_QUERY
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* NSURL_FRAGMENT
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*/
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lwc_string *nsurl_get_component(const nsurl *url, nsurl_component part);
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/**
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* Enquire about the existence of componenets in a given URL
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*
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* \param url NetSurf URL object
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* \param part The URL components confirm existence of
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* \return true iff the component in question exists in url
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*
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* The valid values for the part parameter are:
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* NSURL_SCHEME
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* NSURL_USERNAME
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* NSURL_PASSWORD
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* NSURL_CREDENTIALS
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* NSURL_HOST
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* NSURL_PORT
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* NSURL_PATH
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* NSURL_QUERY
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* NSURL_FRAGMENT
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*/
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bool nsurl_has_component(const nsurl *url, nsurl_component part);
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/**
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* Access a NetSurf URL object as a string
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*
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* \param url NetSurf URL to retrieve a string pointer for.
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* \return the required string
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*
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* The returned string is owned by the NetSurf URL object. It will die
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* with the NetSurf URL object. Keep a reference to the URL if you need it.
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*
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* The returned string has a trailing '\0'.
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*/
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const char *nsurl_access(const nsurl *url);
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/**
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* Variant of \ref nsurl_access for logging.
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*
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* \param url NetSurf URL to retrieve a string pointer for.
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* \return the required string
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*
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* This will not necessarily return the actual nsurl's URL, but something
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* that is suitable for recording to logs. E.g. URLs with the `data` scheme
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* will return a simple place holder, to avoid repeatedly dumping loads of data.
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*
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* The returned string is owned by the NetSurf URL object. It will die
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* with the NetSurf URL object. Keep a reference to the URL if you need it.
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*
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* The returned string has a trailing '\0'.
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*/
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const char *nsurl_access_log(const nsurl *url);
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/**
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* Get a UTF-8 string (for human readable IDNs) from a NetSurf URL object
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*
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* \param url NetSurf URL object
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* \param url_s Returns a url string
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* \param url_l Returns length of url_s
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* \return NSERROR_OK on success, appropriate error otherwise
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*
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* If return value != NSERROR_OK, nothing will be returned in url_s or url_l.
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*
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* The string returned in url_s is owned by the client and it is up to them
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* to free it. It includes a trailing '\0'.
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*
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* The length returned in url_l excludes the trailing '\0'.
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*/
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nserror nsurl_get_utf8(const nsurl *url, char **url_s, size_t *url_l);
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/**
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* Access a URL's path leaf as a string
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*
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* \param url NetSurf URL to retrieve a string pointer for.
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* \return the required string
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*
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* The returned string is owned by the NetSurf URL object. It will die
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* with the NetSurf URL object. Keep a reference to the URL if you need it.
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*
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* The returned string has a trailing '\0'.
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*/
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const char *nsurl_access_leaf(const nsurl *url);
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/**
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* Find the length of a NetSurf URL object's URL, as returned by nsurl_access
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*
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* \param url NetSurf URL to find length of.
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* \return the required string
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*
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* The returned length excludes the trailing '\0'.
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*/
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size_t nsurl_length(const nsurl *url);
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/**
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* Get a URL's hash value
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*
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* \param url NetSurf URL get hash value for.
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* \return the hash value
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*/
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uint32_t nsurl_hash(const nsurl *url);
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/**
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* Join a base url to a relative link part, creating a new NetSurf URL object
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*
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* \param base NetSurf URL containing the base to join rel to
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* \param rel String containing the relative link part
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* \param joined Returns joined NetSurf URL
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* \return NSERROR_OK on success, appropriate error otherwise
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*
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* If return value != NSERROR_OK, nothing will be returned in join.
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*
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* It is up to the client to call nsurl_unref when they are finished with
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* the created object.
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*/
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nserror nsurl_join(const nsurl *base, const char *rel, nsurl **joined);
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/**
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* Create a NetSurf URL object without a fragment from a NetSurf URL
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*
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* \param url NetSurf URL to create new NetSurf URL from
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* \param no_frag Returns new NetSurf URL without fragment
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* \return NSERROR_OK on success, appropriate error otherwise
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*
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* If return value != NSERROR_OK, nothing will be returned in no_frag.
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*
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* It is up to the client to call nsurl_unref when they are finished with
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* the created object.
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*/
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nserror nsurl_defragment(const nsurl *url, nsurl **no_frag);
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/**
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* Create a NetSurf URL object, adding a fragment to an existing URL object
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*
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* \param url NetSurf URL to create new NetSurf URL from
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* \param frag Fragment to add
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* \param new_url Returns new NetSurf URL without fragment
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* \return NSERROR_OK on success, appropriate error otherwise
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*
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* If return value != NSERROR_OK, nothing will be returned in new_url.
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*
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* It is up to the client to call nsurl_unref when they are finished with
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* the created object.
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*
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* Any fragment in url is replaced with frag in new_url.
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*/
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nserror nsurl_refragment(const nsurl *url, lwc_string *frag, nsurl **new_url);
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/**
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* Create a NetSurf URL object, with query string replaced
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*
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* \param url NetSurf URL to create new NetSurf URL from
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* \param query Query string to use
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* \param new_url Returns new NetSurf URL with query string provided
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* \return NSERROR_OK on success, appropriate error otherwise
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*
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* If return value != NSERROR_OK, nothing will be returned in new_url.
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*
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* It is up to the client to call nsurl_unref when they are finished with
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* the created object.
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*
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* Any query component in url is replaced with query in new_url.
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*
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* Passing the empty string as a replacement will result in the query
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* component being removed.
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*/
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nserror nsurl_replace_query(const nsurl *url, const char *query,
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nsurl **new_url);
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/**
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* Create a NetSurf URL object, with scheme replaced
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*
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* \param url NetSurf URL to create new NetSurf URL from
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* \param scheme Scheme to use
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* \param new_url Returns new NetSurf URL with scheme provided
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* \return NSERROR_OK on success, appropriate error otherwise
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*
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* If return value != NSERROR_OK, nothing will be returned in new_url.
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*
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* It is up to the client to call nsurl_unref when they are finished with
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* the created object.
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*
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* Any scheme component in url is replaced with scheme in new_url.
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*/
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nserror nsurl_replace_scheme(const nsurl *url, lwc_string *scheme,
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nsurl **new_url);
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/**
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* Attempt to find a nice filename for a URL.
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*
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* \param url A NetSurf URL object to create a filename from
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* \param result Updated to caller-owned string with filename
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* \param remove_extensions remove any extensions from the filename
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* \return NSERROR_OK on success, appropriate error otherwise
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*
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* Caller must ensure string result string is freed, if NSERROR_OK returned.
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*/
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nserror nsurl_nice(const nsurl *url, char **result, bool remove_extensions);
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/**
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* Create a NetSurf URL object for URL with parent location of an existing URL.
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*
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* \param url NetSurf URL to create new NetSurf URL from
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* \param new_url Returns new NetSurf URL with parent URL path
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* \return NSERROR_OK on success, appropriate error otherwise
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*
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* If return value != NSERROR_OK, nothing will be returned in new_url.
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*
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* It is up to the client to call nsurl_unref when they are finished with
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* the created object.
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*
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* As well as stripping top most path segment, query and fragments are stripped.
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*/
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nserror nsurl_parent(const nsurl *url, nsurl **new_url);
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#endif
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