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startup: v:progpath fallback: path_guess_exepath

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If procfs is missing then libuv cannot find the exe path.
Fallback to path_guess_exepath(), adapted from Vim findYourself().

Closes #6734
This commit is contained in:
Justin M. Keyes
2017-05-13 18:17:21 +02:00
parent 6e4e70f51b
commit 4c5398bc40
6 changed files with 109 additions and 8 deletions
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55
test/unit/path_spec.lua
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@@ -18,7 +18,7 @@ local cimp = cimport('./src/nvim/os/os.h', './src/nvim/path.h')
local length = 0
local buffer = nil
describe('path function', function()
describe('path.c', function()
describe('path_full_dir_name', function()
setup(function()
lfs.mkdir('unit-test-directory')
@@ -293,6 +293,59 @@ describe('path_shorten_fname_if_possible', function()
end)
end)
describe('path.c path_guess_exepath', function()
local cwd = lfs.currentdir()
for _,name in ipairs({'./nvim', '.nvim', 'foo/nvim'}) do
itp('"'..name..'" returns name catenated with CWD', function()
local bufsize = 255
local buf = cstr(bufsize, '')
cimp.path_guess_exepath(name, buf, bufsize)
eq(cwd..'/'..name, ffi.string(buf))
end)
end
itp('absolute path returns the name unmodified', function()
local name = '/foo/bar/baz'
local bufsize = 255
local buf = cstr(bufsize, '')
cimp.path_guess_exepath(name, buf, bufsize)
eq(name, ffi.string(buf))
end)
itp('returns the name unmodified if not found in $PATH', function()
local name = '23u0293_not_in_path'
local bufsize = 255
local buf = cstr(bufsize, '')
cimp.path_guess_exepath(name, buf, bufsize)
eq(name, ffi.string(buf))
end)
itp('does not crash if $PATH item exceeds MAXPATHL', function()
local orig_path_env = os.getenv('PATH')
local name = 'cat' -- Some executable in $PATH.
local bufsize = 255
local buf = cstr(bufsize, '')
local insane_path = orig_path_env..':'..(("x/"):rep(4097))
cimp.os_setenv('PATH', insane_path, true)
cimp.path_guess_exepath(name, buf, bufsize)
eq('bin/' .. name, ffi.string(buf):sub(-#('bin/' .. name), -1))
-- Restore $PATH.
cimp.os_setenv('PATH', orig_path_env, true)
end)
itp('returns full path found in $PATH', function()
local name = 'cat' -- Some executable in $PATH.
local bufsize = 255
local buf = cstr(bufsize, '')
cimp.path_guess_exepath(name, buf, bufsize)
-- Usually "/bin/cat" on unix, "/path/to/nvim/cat" on Windows.
eq('bin/' .. name, ffi.string(buf):sub(-#('bin/' .. name), -1))
end)
end)
describe('path.c', function()
setup(function()
lfs.mkdir('unit-test-directory');