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https://github.com/netsurf-browser/netsurf
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e9b89f776d
This allows front ends to provide resources from compiled in data instead of requiring the resources to be available on disc and forcing a redirect.
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/*
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* Copyright 2014 Vincent Sanders <vince@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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/**
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* \file
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*
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* Interface to platform-specific fetcher operations.
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*/
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#ifndef _NETSURF_DESKTOP_GUI_FETCH_H_
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#define _NETSURF_DESKTOP_GUI_FETCH_H_
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struct nsurl;
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/**
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* function table for fetcher operations.
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*/
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struct gui_fetch_table {
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/* Mandantory entries */
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/**
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* Determine the MIME type of a local file.
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*
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* @note used in file fetcher
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*
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* \param unix_path Unix style path to file on disk
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* \return Pointer to MIME type string (should not be freed) -
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* invalidated on next call to fetch_filetype.
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*/
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const char *(*filetype)(const char *unix_path);
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/* Optional entries */
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/**
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* Translate resource to full url.
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*
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* @note Only used in resource fetcher
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*
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* Transforms a resource: path into a full URL. The returned URL
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* is used as the target for a redirect. The caller takes ownership of
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* the returned nsurl including unrefing it when finished with it.
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*
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* \param path The path of the resource to locate.
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* \return A string containing the full URL of the target object or
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* NULL if no suitable resource can be found.
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*/
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struct nsurl* (*get_resource_url)(const char *path);
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/**
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* Translate resource to source data.
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*
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* @note Only used in resource fetcher
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*
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* Obtains the data for a resource directly
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*
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* \param path The path of the resource to locate.
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* \param data Pointer to recive data into
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* \param data_len Pointer to length of returned data
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* \return NSERROR_OK and the data and length values updated
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* else appropriate error code.
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*/
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nserror (*get_resource_data)(const char *path, const uint8_t **data, size_t *data_len);
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/**
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* Releases source data.
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*
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* @note Only used in resource fetcher
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*
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* Releases source data obtained from get_resource_data()
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*
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* \param data The value returned from a previous get_resource_data call
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* \return NSERROR_OK on success else appropriate error code.
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*/
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nserror (*release_resource_data)(const uint8_t *data);
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/**
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* Find a MIME type for a local file
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*
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* @note only used in curl fetcher on RISC OS otherwise its a
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* strdup of filetype.
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*
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* \param ro_path RISC OS style path to file on disk
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* \return MIME type string (on heap, caller should free), or NULL
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*/
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char *(*mimetype)(const char *ro_path);
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};
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#endif
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