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awesome.spawn(): Add possibility to return pipes 

This adds three new arguments to awesome.spawn() that tell it to return pipes
for stdin, stdout and stderr of the spawned process.

Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2015-08-13 09:05:52 +02:00
parent a166f86864
commit 2d8bf89ff9
1 changed files with 41 additions and 5 deletions
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46
spawn.c
View File

@ -340,8 +340,14 @@ parse_command(lua_State *L, int idx, GError **error)
*
* @tparam string|table cmd The command to launch.
* @tparam[opt=true] boolean use_sn Use startup-notification?
* @tparam[opt=false] boolean stdin Return a fd for stdin?
* @tparam[opt=false] boolean stdout Return a fd for stdout?
* @tparam[opt=false] boolean stderr Return a fd for stderr?
* @treturn[1] integer Process ID if everything is OK.
* @treturn[1] string Startup-notification ID, if `use_sn` is true.
* @treturn[1] integer stdin, if `stdin` is true.
* @treturn[1] integer stdout, if `stdout` is true.
* @treturn[1] integer stderr, if `stderr` is true.
* @treturn[2] string An error string if an error occured.
* @function spawn
*/
@ -349,12 +355,26 @@ int
luaA_spawn(lua_State *L)
{
gchar **argv = NULL;
bool use_sn = true;
bool use_sn = true, return_stdin = false, return_stdout = false, return_stderr = false;
int stdin_fd = -1, stdout_fd = -1, stderr_fd = -1;
int *stdin_ptr = NULL, *stdout_ptr = NULL, *stderr_ptr = NULL;
gboolean retval;
GPid pid;
if(lua_gettop(L) >= 2)
use_sn = luaA_checkboolean(L, 2);
if(lua_gettop(L) >= 3)
return_stdin = luaA_checkboolean(L, 3);
if(lua_gettop(L) >= 4)
return_stdout = luaA_checkboolean(L, 4);
if(lua_gettop(L) >= 5)
return_stderr = luaA_checkboolean(L, 5);
if(return_stdin)
stdin_ptr = &stdin_fd;
if(return_stdout)
stdout_ptr = &stdout_fd;
if(return_stderr)
stderr_ptr = &stderr_fd;
GError *error = NULL;
argv = parse_command(L, 1, &error);
@ -383,8 +403,9 @@ luaA_spawn(lua_State *L)
sn_launcher_context_setup_child_process(context);
}
retval = g_spawn_async(NULL, argv, NULL, G_SPAWN_SEARCH_PATH,
spawn_callback, NULL, &pid, &error);
retval = g_spawn_async_with_pipes(NULL, argv, NULL, G_SPAWN_SEARCH_PATH,
spawn_callback, NULL, &pid,
stdin_ptr, stdout_ptr, stderr_ptr, &error);
g_strfreev(argv);
if(!retval)
{
@ -402,9 +423,24 @@ luaA_spawn(lua_State *L)
/* push sn on stack */
if (context)
lua_pushstring(L,sn_launcher_context_get_startup_id(context));
lua_pushstring(L, sn_launcher_context_get_startup_id(context));
else
lua_pushnil(L);
return (context)?2:1;
if(return_stdin)
lua_pushinteger(L, stdin_fd);
else
lua_pushnil(L);
if(return_stdout)
lua_pushinteger(L, stdout_fd);
else
lua_pushnil(L);
if(return_stderr)
lua_pushinteger(L, stderr_fd);
else
lua_pushnil(L);
return 5;
}
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80