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local helpers = require('test.unit.helpers')(after_each)
local itp = helpers.gen_itp(it)
local cimported = helpers.cimport(
'./src/nvim/os/shell.h',
'./src/nvim/option_defs.h',
'./src/nvim/main.h',
'./src/nvim/memory.h'
)
local ffi, eq = helpers.ffi, helpers.eq
local intern = helpers.internalize
local to_cstr = helpers.to_cstr
local NULL = ffi.cast('void *', 0)
describe('shell functions', function()
before_each(function()
-- os_system() can't work when the p_sh and p_shcf variables are unset
cimported.p_sh = to_cstr('/bin/sh')
cimported.p_shcf = to_cstr('-c')
cimported.p_sxq = to_cstr('')
cimported.p_sxe = to_cstr('')
end)
local function shell_build_argv(cmd, extra_args)
local res = cimported.shell_build_argv(
cmd and to_cstr(cmd),
extra_args and to_cstr(extra_args))
-- `res` is zero-indexed (C pointer, not Lua table)!
local argc = 0
local ret = {}
-- Explicitly free everything, so if it is not in allocated memory it will
-- crash.
while res[argc] ~= nil do
ret[#ret + 1] = ffi.string(res[argc])
cimported.xfree(res[argc])
argc = argc + 1
end
cimported.xfree(res)
return ret
end
local function shell_argv_to_str(argv_table)
-- C string array (char **).
local argv = (argv_table
and ffi.new("char*[?]", #argv_table+1)
or NULL)
local argc = 1
while argv_table ~= nil and argv_table[argc] ~= nil do
-- `argv` is zero-indexed (C pointer, not Lua table)!
argv[argc - 1] = to_cstr(argv_table[argc])
argc = argc + 1
end
if argv_table ~= nil then
argv[argc - 1] = NULL
end
local res = cimported.shell_argv_to_str(argv)
return ffi.string(res)
end
local function os_system(cmd, input)
local input_or = input and to_cstr(input) or NULL
local input_len = (input ~= nil) and string.len(input) or 0
local output = ffi.new('char *[1]')
local nread = ffi.new('size_t[1]')
local argv = ffi.cast('char**',
cimported.shell_build_argv(to_cstr(cmd), nil))
local status = cimported.os_system(argv, input_or, input_len, output, nread)
return status, intern(output[0], nread[0])
end
describe('os_system', function()
itp('can echo some output (shell builtin)', function()
local cmd, text = 'printf "%s "', 'some text '
local status, output = os_system(cmd .. ' ' .. text)
eq(text, output)
eq(0, status)
end)
itp('can deal with empty output', function()
local cmd = 'printf ""'
local status, output = os_system(cmd)
eq('', output)
eq(0, status)
end)
itp('can pass input on stdin', function()
local cmd, input = 'cat -', 'some text\nsome other text'
local status, output = os_system(cmd, input)
eq(input, output)
eq(0, status)
end)
itp('returns non-zero exit code', function()
local status = os_system('exit 2')
eq(2, status)
end)
end)
describe('shell_build_argv', function()
itp('works with NULL arguments', function()
eq({'/bin/sh'}, shell_build_argv(nil, nil))
end)
itp('works with cmd', function()
eq({'/bin/sh', '-c', 'abc def'}, shell_build_argv('abc def', nil))
end)
itp('works with extra_args', function()
eq({'/bin/sh', 'ghi jkl'}, shell_build_argv(nil, 'ghi jkl'))
end)
itp('works with cmd and extra_args', function()
eq({'/bin/sh', 'ghi jkl', '-c', 'abc def'}, shell_build_argv('abc def', 'ghi jkl'))
end)
itp('splits and unquotes &shell and &shellcmdflag', function()
cimported.p_sh = to_cstr('/Program" "Files/zsh -f')
cimported.p_shcf = to_cstr('-x -o "sh word split" "-"c')
eq({'/Program Files/zsh', '-f',
'ghi jkl',
'-x', '-o', 'sh word split',
'-c', 'abc def'},
shell_build_argv('abc def', 'ghi jkl'))
end)
itp('applies shellxescape (p_sxe) and shellxquote (p_sxq)', function()
cimported.p_sxq = to_cstr('(')
cimported.p_sxe = to_cstr('"&|<>()@^')
local argv = ffi.cast('char**',
cimported.shell_build_argv(to_cstr('echo &|<>()@^'), nil))
eq(ffi.string(argv[0]), '/bin/sh')
eq(ffi.string(argv[1]), '-c')
eq(ffi.string(argv[2]), '(echo ^&^|^<^>^(^)^@^^)')
eq(nil, argv[3])
end)
itp('applies shellxquote="(', function()
cimported.p_sxq = to_cstr('"(')
cimported.p_sxe = to_cstr('"&|<>()@^')
local argv = ffi.cast('char**', cimported.shell_build_argv(
to_cstr('echo -n some text'), nil))
eq(ffi.string(argv[0]), '/bin/sh')
eq(ffi.string(argv[1]), '-c')
eq(ffi.string(argv[2]), '"(echo -n some text)"')
eq(nil, argv[3])
end)
itp('applies shellxquote="', function()
cimported.p_sxq = to_cstr('"')
cimported.p_sxe = to_cstr('')
local argv = ffi.cast('char**', cimported.shell_build_argv(
to_cstr('echo -n some text'), nil))
eq(ffi.string(argv[0]), '/bin/sh')
eq(ffi.string(argv[1]), '-c')
eq(ffi.string(argv[2]), '"echo -n some text"')
eq(nil, argv[3])
end)
itp('with empty shellxquote/shellxescape', function()
local argv = ffi.cast('char**', cimported.shell_build_argv(
to_cstr('echo -n some text'), nil))
eq(ffi.string(argv[0]), '/bin/sh')
eq(ffi.string(argv[1]), '-c')
eq(ffi.string(argv[2]), 'echo -n some text')
eq(nil, argv[3])
end)
end)
itp('shell_argv_to_str', function()
eq('', shell_argv_to_str({ nil }))
eq("''", shell_argv_to_str({ '' }))
eq("'foo' '' 'bar'", shell_argv_to_str({ 'foo', '', 'bar' }))
eq("'/bin/sh' '-c' 'abc def'", shell_argv_to_str({'/bin/sh', '-c', 'abc def'}))
eq("'abc def' 'ghi jkl'", shell_argv_to_str({'abc def', 'ghi jkl'}))
eq("'/bin/sh' '-c' 'abc def' '"..('x'):rep(225).."...",
shell_argv_to_str({'/bin/sh', '-c', 'abc def', ('x'):rep(999)}))
end)
end)
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