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ignorecase.h
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ignorecase.h
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/** \file ignorecase.h */
/**
* \mainpage PhysicsFS ignorecase
*
* This is an extension to PhysicsFS to let you handle files in a
* case-insensitive manner, regardless of what sort of filesystem or
* archive they reside in. It does this by enumerating directories as
* needed and manually locating matching entries.
*
* Please note that this brings with it some caveats:
* - On filesystems that are case-insensitive to start with, such as those
* used on Windows or MacOS, you are adding extra overhead.
* - On filesystems that are case-sensitive, you might select the wrong dir
* or file (which brings security considerations and potential bugs). This
* code favours exact case matches, but you will lose access to otherwise
* duplicate filenames, or you might go down a wrong directory tree, etc.
* In practive, this is rarely a problem, but you need to be aware of it.
* - This doesn't do _anything_ with the write directory; you're on your
* own for opening the right files for writing. You can sort of get around
* this by adding your write directory to the search path, but then the
* interpolated directory tree can screw you up even more.
*
* This code should be considered an aid for legacy code. New development
* shouldn't do dumbass things that require this aid in the first place. :)
*
* Usage: Set up PhysicsFS as you normally would, then use
* PHYSFSEXT_locateCorrectCase() to get a "correct" pathname to pass to
* functions like PHYSFS_openRead(), etc.
*
* License: this code is public domain. I make no warranty that it is useful,
* correct, harmless, or environmentally safe.
*
* This particular file may be used however you like, including copying it
* verbatim into a closed-source project, exploiting it commercially, and
* removing any trace of my name from the source (although I hope you won't
* do that). I welcome enhancements and corrections to this file, but I do
* not require you to send me patches if you make changes. This code has
* NO WARRANTY.
*
* Unless otherwise stated, the rest of PhysicsFS falls under the zlib license.
* Please see LICENSE.txt in the root of the source tree.
*
* \author Ryan C. Gordon.
*/
/**
* \fn int PHYSFSEXT_locateCorrectCase(char *buf)
* \brief Find an existing filename with matching case.
*
* This function will look for a path/filename that matches the passed in
* buffer. Each element of the buffer's path is checked for a
* case-insensitive match. The buffer must specify a null-terminated string
* in platform-independent notation.
*
* Please note results may be skewed differently depending on whether symlinks
* are enabled or not.
*
* Each element of the buffer is overwritten with the actual case of an
* existing match. If there is no match, the search aborts and reports an
* error. Exact matches are favored over case-insensitive matches.
*
* THIS IS RISKY. Please do not use this function for anything but crappy
* legacy code.
*
* \param buf Buffer with null-terminated string of path/file to locate.
* This buffer will be modified by this function.
* \return zero if match was found, -1 if the final element (the file itself)
* is missing, -2 if one of the parent directories is missing.
*/
int PHYSFSEXT_locateCorrectCase(char *buf);
/* end of ignorecase.h ... */