master v1
mark 21 years ago
commit e7e76fe13c

@ -0,0 +1,5 @@
CFLAGS = $(WARNINGS) $(DEFINES) $(INCLUDES)
DEFINES = -D_XOPEN_SOURCE=600
INCLUDES = -I${LUA}/src
WARNINGS = -W -Wall
LUA = /home/mark/src/lang/lua/lua-5.1

@ -0,0 +1,152 @@
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <spawn.h>
#include <sys/wait.h>
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
extern char **environ;
/* helper functions */
static void *safe_alloc(lua_State *L, size_t n)
{
return lua_newuserdata(L, n);
}
static int posix_error(lua_State *L)
{
lua_pushnil(L);
lua_pushstring(L, strerror(errno));
return 2;
}
/* seconds -- */
static int osex_sleep(lua_State *L)
{
lua_Number seconds = luaL_checknumber(L, 1);
usleep(1e6 * seconds);
return 0;
}
#define PROCESS_HANDLE "process"
struct process {
pid_t pid;
int status;
};
static void get_redirect(lua_State *L, posix_spawn_file_actions_t *file_actions,
const char *stream, int descriptor)
{
lua_getfield(L, 2, stream);
if (!lua_isnil(L, -1))
posix_spawn_file_actions_adddup2(file_actions,
fileno(luaL_checkudata(L, -1, LUA_FILEHANDLE)), descriptor);
lua_pop(L, 1);
}
/* filename [options] -- true/nil,error */
static int osex_spawn(lua_State *L)
{
const char *filename = luaL_checkstring(L, 1);
posix_spawn_file_actions_t file_actions;
char **argv;
char **envp;
struct process *p;
if (lua_type(L, 2) == LUA_TTABLE) {
lua_getfield(L, 2, "args");
if (!lua_isnil(L, -1)) {
luaL_checktype(L, -1, LUA_TTABLE);
/* XXX */
}
else {
argv = safe_alloc(L, 1 * sizeof *argv);
argv[0] = 0;
}
lua_pop(L, 1);
lua_getfield(L, 2, "env");
if (!lua_isnil(L, -1)) {
size_t i, n;
luaL_checktype(L, -1, LUA_TTABLE);
n = lua_objlen(L, -1);
envp = safe_alloc(L, (n + 1) * sizeof *envp);
for (i = 1; i <= n; i++) {
lua_rawgeti(L, -1, i);
luaL_checktype(L, -1, LUA_TSTRING);
/* XXX push onto zz */
}
}
else {
envp = environ;
}
lua_pop(L, 1);
get_redirect(L, &file_actions, "stdin", STDIN_FILENO);
get_redirect(L, &file_actions, "stdout", STDOUT_FILENO);
get_redirect(L, &file_actions, "stderr", STDERR_FILENO);
}
p = lua_newuserdata(L, sizeof *p);
luaL_getmetatable(L, PROCESS_HANDLE);
lua_setmetatable(L, -2);
p->status = -1;
if (0 != posix_spawnp(&p->pid, filename, &file_actions, 0, argv, envp))
return posix_error(L);
return 1;
}
static int process_wait(lua_State *L)
{
struct process *p = luaL_checkudata(L, 1, PROCESS_HANDLE);
if (p->status != -1) {
int status;
waitpid(p->pid, &status, 0);
p->status = WEXITSTATUS(status);
}
lua_pushnumber(L, p->status);
return 1;
}
static const luaL_reg process_lib[] = {
{"wait", process_wait},
{0,0}
};
static int osex_newpipe(lua_State *L)
{
int fd[2];
FILE **pf;
if (0 != pipe(fd))
return posix_error(L);
luaL_getmetatable(L, LUA_FILEHANDLE);
pf = lua_newuserdata(L, sizeof *pf);
lua_pushvalue(L, -2);
lua_setmetatable(L, -2);
*pf = fdopen(fd[0], "r");
pf = lua_newuserdata(L, sizeof *pf);
lua_pushvalue(L, -2);
lua_setmetatable(L, -2);
*pf = fdopen(fd[1], "w");
return 2;
}
static const luaL_reg osex_lib[] = {
{"sleep", osex_sleep},
{"spawn", osex_spawn},
{"newpipe", osex_newpipe},
{0,0}
};
int luaopen_osex(lua_State *L)
{
luaL_newmetatable(L, PROCESS_HANDLE);
luaL_register(L, 0, process_lib);
luaL_register(L, "os", osex_lib);
return 1;
}

@ -0,0 +1,2 @@
#include <stdio.h>

@ -0,0 +1,147 @@
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
extern char **environ;
/* helper functions */
static void *safe_alloc(lua_State *L, size_t n)
{
return lua_newuserdata(L, n);
}
static int windows_error(lua_State *L)
{
lua_pushnil(L);
lua_pushstring(L, strerror(errno));
return 2;
}
/* seconds -- */
static int osex_sleep(lua_State *L)
{
lua_Number seconds = luaL_checknumber(L, 1);
Sleep(1e3 * seconds);
return 0;
}
#define PROCESS_HANDLE "process"
struct process {
HANDLE pid;
int status;
};
static void get_redirect(lua_State *L, HANDLE *handle, const char *stream)
{
lua_getfield(L, 2, stream);
if (!lua_isnil(L, -1)) {
FILE **pf = luaL_checkudata(L, LUA_FILEHANDLE);
*handle = _get_osfhandle(_filen(*pf));
}
lua_pop(L, 1);
}
/* filename [options] -- true/nil,error */
static int osex_spawn(lua_State *L)
{
size_t len;
const char *filename;
char *cmdline;
char *environment;
struct process *p;
STARTUPINFO si;
PROCESS_INFORMATION pi;
filename = luaL_checklstring(L, 1, &len);
cmdline = safe_alloc(len + 3);
sprintf(cmdline, "\"%s\"", filename);
environment = 0;
si.cb = sizeof si;
si.dwFlags = STARTF_USESTDHANDLES;
si.hStdInput = GetStandardHandle(STD_INPUT_HANDLE);
si.hStdOutput = GetStandardHandle(STD_OUTPUT_HANDLE);
si.hStdError = GetStandardHandle(STD_ERROR_HANDLE);
if (lua_type(L, 2) == LUA_TTABLE) {
lua_getfield(L, 2, "args");
if (!lua_isnil(L, -1)) {
luaL_checktype(L, -1, LUA_TTABLE);
cmdline = insert_alli(L, -1);
}
lua_pop(L, 1);
lua_getfield(L, 2, "env");
if (!lua_isnil(L, -1)) {
luaL_checktype(L, -1, LUA_TTABLE);
environment = insert_all(L, -1);
}
lua_pop(L, 1);
get_redirect(L, "stdin", &si.hStdInput );
get_redirect(L, "stdout", &si.hStdOutput);
get_redirect(L, "stderr", &si.hStdError );
}
p = lua_newuserdata(L, sizeof *p);
luaL_getmetatable(L, PROCESS_HANDLE);
lua_setmetatable(L, -2);
p->status = -1;
if (!CreateProcess(0, cmdline, 0, 0, 0, 0, environment, 0, &si, &pi))
return windows_error(L);
p->pid = pi.hProcess;
return 1;
}
static int process_wait(lua_State *L)
{
struct process *p = luaL_checkudata(L, 1, PROCESS_HANDLE);
if (p->status != -1) {
int status;
waitpid(p->pid, &status, 0);
p->status = WEXITSTATUS(status);
}
lua_pushnumber(L, p->status);
return 1;
}
static const luaL_reg process_lib[] = {
{"wait", process_wait},
{0,0}
};
static int osex_newpipe(lua_State *L)
{
int fd[2];
FILE **pf;
if (0 != pipe(fd))
return posix_error(L);
luaL_getmetatable(L, LUA_FILEHANDLE);
pf = lua_newuserdata(L, sizeof *pf);
lua_pushvalue(L, -2);
lua_setmetatable(L, -2);
*pf = fdopen(fd[0], "r");
pf = lua_newuserdata(L, sizeof *pf);
lua_pushvalue(L, -2);
lua_setmetatable(L, -2);
*pf = fdopen(fd[1], "w");
return 2;
}
static const luaL_reg osex_lib[] = {
{"sleep", osex_sleep},
{"spawn", osex_spawn},
{"newpipe", osex_newpipe},
{0,0}
};
int luaopen_osex(lua_State *L)
{
luaL_newmetatable(L, PROCESS_HANDLE);
luaL_register(L, 0, process_lib);
luaL_register(L, "os", osex_lib);
return 1;
}
Loading…
Cancel
Save