1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
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_vars.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)
|
