mirror of
https://github.com/ZDoom/Raze.git
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96 lines
2.2 KiB
Lua
96 lines
2.2 KiB
Lua
-- Virtual file system facilities for Lunatic
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local ffi = require("ffi")
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local C = ffi.C
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local decl = require("lprivate").decl
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local assert = assert
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local error = error
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local type = type
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----------
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decl[[
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int32_t pathsearchmode;
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typedef struct _CACHE1D_FIND_REC {
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char *name;
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int32_t type, source;
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struct _CACHE1D_FIND_REC *next, *prev, *usera, *userb;
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} CACHE1D_FIND_REC;
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void klistfree(CACHE1D_FIND_REC *rec);
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CACHE1D_FIND_REC *klistpath(const char *path, const char *mask, int32_t type);
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]]
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-- The API table
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local fs = {}
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local CACHE1D = ffi.new[[
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struct {
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static const int FIND_FILE = 1;
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static const int FIND_DIR = 2;
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static const int FIND_DRIVE = 4;
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static const int FIND_NOCURDIR = 8;
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static const int OPT_NOSTACK = 0x100;
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// the lower the number, the higher the priority
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static const int SOURCE_DRIVE = 0;
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static const int SOURCE_CURDIR = 1;
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static const int SOURCE_PATH = 2; // + path stack depth
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static const int SOURCE_ZIP = 0x7ffffffe;
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static const int SOURCE_GRP = 0x7fffffff;
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}
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]]
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-- files = fs.listpath(path, mask)
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-- TODO: filter by 'source' (path, zip and/or grp)
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-- TODO: directories too, so that one can list them recursively, for example
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function fs.listpath(path, mask)
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if (type(path)~="string") then
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-- TODO: maybe also allow nil
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error("Invalid argument #1: must be a string", 2)
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end
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if (type(mask) ~= "string") then
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error("Invalid argument #2: must be a string", 2)
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end
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-- Normalization, for portability's sake
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if (path:find("\\")) then
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error("Invalid argument #1: must not contain backslashes", 2)
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end
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if (mask:find("[\\/]")) then
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error("Invalid argument #2: must not contain back or forward slashes", 2)
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end
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local opsm = C.pathsearchmode
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C.pathsearchmode = 0
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local rootrec = C.klistpath(path, mask, CACHE1D.FIND_FILE + CACHE1D.FIND_NOCURDIR)
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C.pathsearchmode = opsm
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if (rootrec == nil) then
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-- XXX: may have failed hard or just no matching files
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return {}
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end
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local files = {}
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local rec = rootrec
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while (rec ~= nil) do
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assert(rec.name ~= nil)
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files[#files+1] = ffi.string(rec.name)
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rec = rec.next
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end
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C.klistfree(rootrec)
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return files
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end
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return fs
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