mirror of
https://github.com/netsurf-browser/netsurf
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c56642819e
This rationalises the path construction and basename file operations. The default implementation is POSIX which works for all frontends except windows, riscos and amiga which have differeing path separators and rules. These implementations are significantly more robust than the previous nine implementations and also do not use unsafe strncpy or buffers with arbitrary length limits. These implementations also carry full documentation comments.
140 lines
4.2 KiB
C
140 lines
4.2 KiB
C
/*
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* Copyright 2010 Vincent Sanders <vince@kyllikki.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 utils/filepath.h
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* @brief Utility routines to obtain paths to file resources.
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*/
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#ifndef _NETSURF_UTILS_FILEPATH_H_
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#define _NETSURF_UTILS_FILEPATH_H_
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#include <stdarg.h>
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#include "utils/errors.h"
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/**
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* Create a normalised file name.
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*
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* If the file described by the format exists and is accessible the
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* normalised path is placed in str and a pointer to str returned
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* otherwise NULL is returned. The string in str is always modified.
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*
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* @param str A buffer to contain the normalised file name must be at
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* least PATH_MAX bytes long.
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* @param format A printf format for the filename.
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* @param ap The list of arguments for the format.
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* @return A pointer to the expanded filename or NULL if the file is
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* not present or accessible.
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*/
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char *filepath_vsfindfile(char *str, const char *format, va_list ap);
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/**
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* Create a normalised file name.
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*
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* Similar to vsfindfile but takes variadic (printf like) parameters
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*/
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char *filepath_sfindfile(char *str, const char *format, ...);
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/**
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* Create a normalised file name.
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*
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* Similar to sfindfile but allocates its own storage for the
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* returned string. The caller must free this sorage.
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*/
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char *filepath_findfile(const char *format, ...);
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/**
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* Searches an array of resource paths for a file.
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*
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* Iterates through a vector of resource paths and returns the
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* normalised file name of the first acessible file or NULL if no file
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* can be found in any of the resource paths.
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*
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* @param respathv The resource path vector to iterate.
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* @param filepath The buffer to place the result in.
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* @param filename The filename of the resource to search for.
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* @return A pointer to filepath if a target is found or NULL if not.
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*/
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char *filepath_sfind(char **respathv, char *filepath, const char *filename);
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/**
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* Searches an array of resource paths for a file.
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*
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* Similar to filepath_sfind except it allocates its own storage for
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* the returned string. The caller must free this sorage.
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*/
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char *filepath_find(char **respathv, const char *filename);
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/**
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* Searches an array of resource paths for a file optionally forcing a default.
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*
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* Similar to filepath_sfind except if no resource is found the default
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* is used as an additional path element to search, if that still
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* fails the returned path is set to the concatination of the default
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* path and the filename.
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*/
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char *filepath_sfinddef(char **respathv, char *filepath, const char *filename,
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const char *def);
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/**
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* Merge two string vectors into a resource search path vector.
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*
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* @param pathv A string vector containing path elemets to scan.
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* @param langv A string vector containing language names to enumerate.
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* @return A pointer to a NULL terminated string vector of valid
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* resource directories.
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*/
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char **filepath_generate(char * const *pathv, const char * const *langv);
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/**
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* Convert a colon separated list of path elements into a string vector.
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*
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* @param path A colon separated path.
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* @return A pointer to a NULL terminated string vector of valid
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* resource directories.
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*/
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char **filepath_path_to_strvec(const char *path);
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/**
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* Free a string vector.
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*
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* Free a string vector allocated by filepath_path_to_strvec
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*/
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void filepath_free_strvec(char **pathv);
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/**
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* Ensure that all directory elements needed to store a filename exist.
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*
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* @param fname The filename to ensure the path to exists.
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* @return NSERROR_OK on success or error code on failure.
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*/
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nserror filepath_mkdir_all(const char *fname);
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#endif /* _NETSURF_UTILS_FILEPATH_H_ */
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