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# This file is a part of Julia. License is MIT: http://julialang.org/license
# get and set current directory
function pwd()
b = Array(UInt8,1024)
len = Csize_t[length(b),]
uv_error(:getcwd, ccall(:uv_cwd, Cint, (Ptr{UInt8}, Ptr{Csize_t}), b, len))
bytestring(b[1:len[1]-1])
end
function cd(dir::AbstractString)
uv_error("chdir $dir", ccall(:uv_chdir, Cint, (Cstring,), dir))
end
cd() = cd(homedir())
@unix_only function cd(f::Function, dir::AbstractString)
fd = ccall(:open,Int32,(Ptr{UInt8},Int32),".",0)
systemerror(:open, fd == -1)
try
cd(dir)
f()
finally
systemerror(:fchdir, ccall(:fchdir,Int32,(Int32,),fd) != 0)
systemerror(:close, ccall(:close,Int32,(Int32,),fd) != 0)
end
end
@windows_only function cd(f::Function, dir::AbstractString)
old = pwd()
try
cd(dir)
f()
finally
cd(old)
end
end
cd(f::Function) = cd(f, homedir())
function mkdir(path::AbstractString, mode::Unsigned=0o777)
@unix_only ret = ccall(:mkdir, Int32, (Cstring,UInt32), path, mode)
@windows_only ret = ccall(:_wmkdir, Int32, (Cwstring,), path)
systemerror(:mkdir, ret != 0)
end
function mkpath(path::AbstractString, mode::Unsigned=0o777)
isdirpath(path) && (path = dirname(path))
dir = dirname(path)
(path == dir || isdir(path)) && return
mkpath(dir, mode)
mkdir(path, mode)
end
mkdir(path::AbstractString, mode::Signed) = throw(ArgumentError("mode must be an unsigned integer; try 0o$mode"))
mkpath(path::AbstractString, mode::Signed) = throw(ArgumentError("mode must be an unsigned integer; try 0o$mode"))
function rm(path::AbstractString; recursive::Bool=false)
if islink(path) || !isdir(path)
@windows_only if !iswritable(path); chmod(path, 0o777); end
FS.unlink(path)
else
if recursive
for p in readdir(path)
rm(joinpath(path, p), recursive=true)
end
end
@unix_only ret = ccall(:rmdir, Int32, (Cstring,), path)
@windows_only ret = ccall(:_wrmdir, Int32, (Cwstring,), path)
systemerror(:rmdir, ret != 0)
end
end
# The following use Unix command line facilites
function checkfor_mv_cp_cptree(src::AbstractString, dst::AbstractString, txt::AbstractString;
remove_destination::Bool=false)
if ispath(dst)
if remove_destination
# Check for issue when: (src == dst) or when one is a link to the other
# https://github.com/JuliaLang/julia/pull/11172#issuecomment-100391076
if Base.samefile(src, dst)
abs_src = islink(src) ? abspath(readlink(src)) : abspath(src)
abs_dst = islink(dst) ? abspath(readlink(dst)) : abspath(dst)
throw(ArgumentError(string("'src' and 'dst' refer to the same file/dir.",
"This is not supported.\n ",
"`src` refers to: $(abs_src)\n ",
"`dst` refers to: $(abs_dst)\n")))
end
rm(dst; recursive=true)
else
throw(ArgumentError(string("'$dst' exists. `remove_destination=true` ",
"is required to remove '$dst' before $(txt).")))
end
end
end
function cptree(src::AbstractString, dst::AbstractString; remove_destination::Bool=false,
follow_symlinks::Bool=false)
isdir(src) || throw(ArgumentError("'$src' is not a directory. Use `cp(src, dst)`"))
checkfor_mv_cp_cptree(src, dst, "copying"; remove_destination=remove_destination)
mkdir(dst)
for name in readdir(src)
srcname = joinpath(src, name)
if !follow_symlinks && islink(srcname)
symlink(readlink(srcname), joinpath(dst, name))
elseif isdir(srcname)
cptree(srcname, joinpath(dst, name); remove_destination=remove_destination,
follow_symlinks=follow_symlinks)
else
FS.sendfile(srcname, joinpath(dst, name))
end
end
end
function cp(src::AbstractString, dst::AbstractString; remove_destination::Bool=false,
follow_symlinks::Bool=false)
checkfor_mv_cp_cptree(src, dst, "copying"; remove_destination=remove_destination)
if !follow_symlinks && islink(src)
symlink(readlink(src), dst)
elseif isdir(src)
cptree(src, dst; remove_destination=remove_destination, follow_symlinks=follow_symlinks)
else
FS.sendfile(src, dst)
end
end
function mv(src::AbstractString, dst::AbstractString; remove_destination::Bool=false)
checkfor_mv_cp_cptree(src, dst, "moving"; remove_destination=remove_destination)
FS.rename(src, dst)
end
function touch(path::AbstractString)
f = FS.open(path,JL_O_WRONLY | JL_O_CREAT, 0o0666)
@assert f.handle >= 0
try
t = time()
futime(f,t,t)
finally
FS.close(f)
end
end
@unix_only begin
# Obtain a temporary filename.
function tempname()
d = get(ENV, "TMPDIR", C_NULL) # tempnam ignores TMPDIR on darwin
p = ccall(:tempnam, Ptr{UInt8}, (Ptr{UInt8},Ptr{UInt8}), d, "julia")
systemerror(:tempnam, p == C_NULL)
s = bytestring(p)
Libc.free(p)
return s
end
# Obtain a temporary directory's path.
tempdir() = dirname(tempname())
# Create and return the name of a temporary file along with an IOStream
function mktemp(parent=tempdir())
b = joinpath(parent, "tmpXXXXXX")
p = ccall(:mkstemp, Int32, (Ptr{UInt8},), b) # modifies b
systemerror(:mktemp, p == -1)
return (b, fdio(p, true))
end
# Create and return the name of a temporary directory
function mktempdir(parent=tempdir())
b = joinpath(parent, "tmpXXXXXX")
p = ccall(:mkdtemp, Ptr{UInt8}, (Ptr{UInt8},), b)
systemerror(:mktempdir, p == C_NULL)
return bytestring(p)
end
end
@windows_only begin
function tempdir()
temppath = Array(UInt16,32767)
lentemppath = ccall(:GetTempPathW,stdcall,UInt32,(UInt32,Ptr{UInt16}),length(temppath),temppath)
if lentemppath >= length(temppath) || lentemppath == 0
error("GetTempPath failed: $(FormatMessage())")
end
resize!(temppath,lentemppath+1)
return utf8(UTF16String(temppath))
end
tempname(uunique::UInt32=UInt32(0)) = tempname(tempdir(), uunique)
function tempname(temppath::AbstractString,uunique::UInt32)
tname = Array(UInt16,32767)
uunique = ccall(:GetTempFileNameW,stdcall,UInt32,(Cwstring,Ptr{UInt16},UInt32,Ptr{UInt16}), temppath,utf16("jul"),uunique,tname)
lentname = findfirst(tname,0)-1
if uunique == 0 || lentname <= 0
error("GetTempFileName failed: $(FormatMessage())")
end
resize!(tname,lentname+1)
return utf8(UTF16String(tname))
end
function mktemp(parent=tempdir())
filename = tempname(parent, UInt32(0))
return (filename, open(filename,"r+"))
end
function mktempdir(parent=tempdir())
seed::UInt32 = rand(UInt32)
while true
if (seed & typemax(UInt16)) == 0
seed += 1
end
filename = tempname(parent, seed)
ret = ccall(:_wmkdir, Int32, (Ptr{UInt16},), utf16(filename))
if ret == 0
return filename
end
systemerror(:mktempdir, Libc.errno()!=Libc.EEXIST)
seed += 1
end
end
end
function mktemp(fn::Function)
(tmp_path, tmp_io) = mktemp()
try
fn(tmp_path, tmp_io)
finally
close(tmp_io)
rm(tmp_path)
end
end
function mktempdir(fn::Function)
tmpdir = mktempdir()
try
fn(tmpdir)
finally
rm(tmpdir, recursive=true)
end
end
function readdir(path::AbstractString)
# Allocate space for uv_fs_t struct
uv_readdir_req = zeros(UInt8, ccall(:jl_sizeof_uv_fs_t, Int32, ()))
# defined in sys.c, to call uv_fs_readdir, which sets errno on error.
file_count = ccall(:jl_readdir, Int32, (Cstring, Ptr{UInt8}),
path, uv_readdir_req)
systemerror("unable to read directory $path", file_count < 0)
# The list of dir entries is returned as a contiguous sequence of null-terminated
# strings, the first of which is pointed to by ptr in uv_readdir_req.
# The following lines extracts those strings into dirent
entries = ByteString[]
offset = 0
for i = 1:file_count
entry = bytestring(ccall(:jl_uv_fs_t_ptr_offset, Ptr{UInt8},
(Ptr{UInt8}, Int32), uv_readdir_req, offset))
push!(entries, entry)
offset += sizeof(entry) + 1 # offset to the next entry
end
# Clean up the request string
ccall(:jl_uv_fs_req_cleanup, Void, (Ptr{UInt8},), uv_readdir_req)
entries
end
readdir() = readdir(".")
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