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--
-- path.lua
-- Path manipulation functions.
-- Copyright (c) 2002-2010 Jason Perkins and the Premake project
--
--
-- Retrieve the filename portion of a path, without any extension.
--
function path.getbasename(p)
local name = path.getname(p)
local i = name:findlast(".", true)
if (i) then
return name:sub(1, i - 1)
else
return name
end
end
--
-- Retrieve the directory portion of a path, or an empty string if
-- the path does not include a directory.
--
function path.getdirectory(p)
local i = p:findlast("/", true)
if (i) then
if i > 1 then i = i - 1 end
return p:sub(1, i)
else
return "."
end
end
--
-- Retrieve the drive letter, if a Windows path.
--
function path.getdrive(p)
local ch1 = p:sub(1,1)
local ch2 = p:sub(2,2)
if ch2 == ":" then
return ch1
end
end
--
-- Retrieve the file extension.
--
function path.getextension(p)
local i = p:findlast(".", true)
if (i) then
return p:sub(i)
else
return ""
end
end
--
-- Retrieve the filename portion of a path.
--
function path.getname(p)
local i = p:findlast("[/\\]")
if (i) then
return p:sub(i + 1)
else
return p
end
end
--
-- Returns true if the filename represents a C/C++ source code file. This check
-- is used to prevent passing non-code files to the compiler in makefiles. It is
-- not foolproof, but it has held up well. I'm open to better suggestions.
--
function path.iscfile(fname)
local extensions = { ".c", ".s", ".m" }
local ext = path.getextension(fname):lower()
return table.contains(extensions, ext)
end
function path.iscppfile(fname)
local extensions = { ".cc", ".cpp", ".cxx", ".c", ".s", ".m", ".mm" }
local ext = path.getextension(fname):lower()
return table.contains(extensions, ext)
end
function path.iscppheader(fname)
local extensions = { ".h", ".hh", ".hpp", ".hxx" }
local ext = path.getextension(fname):lower()
return table.contains(extensions, ext)
end
--
-- Returns true if the filename represents a Windows resource file. This check
-- is used to prevent passing non-resources to the compiler in makefiles.
--
function path.isresourcefile(fname)
local extensions = { ".rc" }
local ext = path.getextension(fname):lower()
return table.contains(extensions, ext)
end
--
-- Takes a path which is relative to one location and makes it relative
-- to another location instead.
--
function path.rebase(p, oldbase, newbase)
p = path.getabsolute(path.join(oldbase, p))
p = path.getrelative(newbase, p)
return p
end
--
-- Convert the separators in a path from one form to another. If `sep`
-- is nil, then a platform-specific separator is used.
--
local builtin_translate = path.translate
function path.translate(p, sep)
if not sep then
if os.is("windows") then
sep = "\\"
else
sep = "/"
end
end
return builtin_translate(p, sep)
end
--
-- Converts from a simple wildcard syntax, where * is "match any"
-- and ** is "match recursive", to the corresponding Lua pattern.
--
-- @param pattern
-- The wildcard pattern to convert.
-- @returns
-- The corresponding Lua pattern.
--
function path.wildcards(pattern)
-- Escape characters that have special meanings in Lua patterns
pattern = pattern:gsub("([%+%.%-%^%$%(%)%%])", "%%%1")
-- Replace wildcard patterns with special placeholders so I don't
-- have competing star replacements to worry about
pattern = pattern:gsub("%*%*", "\001")
pattern = pattern:gsub("%*", "\002")
-- Replace the placeholders with their Lua patterns
pattern = pattern:gsub("\001", ".*")
pattern = pattern:gsub("\002", "[^/]*")
return pattern
end
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