diff options
Diffstat (limited to 'lua.c')
-rw-r--r-- | lua.c | 117 |
1 files changed, 58 insertions, 59 deletions
@@ -1,5 +1,5 @@ | |||
1 | /* | 1 | /* |
2 | ** $Id: lua.c,v 1.71 2001/10/17 21:12:57 roberto Exp $ | 2 | ** $Id: lua.c,v 1.72 2001/11/27 20:56:47 roberto Exp $ |
3 | ** Lua stand-alone interpreter | 3 | ** Lua stand-alone interpreter |
4 | ** See Copyright Notice in lua.h | 4 | ** See Copyright Notice in lua.h |
5 | */ | 5 | */ |
@@ -10,7 +10,6 @@ | |||
10 | #include <stdlib.h> | 10 | #include <stdlib.h> |
11 | #include <string.h> | 11 | #include <string.h> |
12 | 12 | ||
13 | #define LUA_PRIVATE | ||
14 | #include "lua.h" | 13 | #include "lua.h" |
15 | 14 | ||
16 | #include "luadebug.h" | 15 | #include "luadebug.h" |
@@ -25,12 +24,12 @@ static int isatty (int x) { return x==0; } /* assume stdin is a tty */ | |||
25 | 24 | ||
26 | 25 | ||
27 | #ifndef LUA_PROGNAME | 26 | #ifndef LUA_PROGNAME |
28 | #define LUA_PROGNAME l_s("lua: ") | 27 | #define LUA_PROGNAME "lua: " |
29 | #endif | 28 | #endif |
30 | 29 | ||
31 | 30 | ||
32 | #ifndef PROMPT | 31 | #ifndef PROMPT |
33 | #define PROMPT l_s("> ") | 32 | #define PROMPT "> " |
34 | #endif | 33 | #endif |
35 | 34 | ||
36 | 35 | ||
@@ -62,7 +61,7 @@ static void lstop (void) { | |||
62 | lua_setlinehook(L, old_linehook); | 61 | lua_setlinehook(L, old_linehook); |
63 | lua_setcallhook(L, old_callhook); | 62 | lua_setcallhook(L, old_callhook); |
64 | lreset(); | 63 | lreset(); |
65 | lua_error(L, l_s("interrupted!")); | 64 | lua_error(L, "interrupted!"); |
66 | } | 65 | } |
67 | 66 | ||
68 | 67 | ||
@@ -75,7 +74,7 @@ static void laction (int i) { | |||
75 | } | 74 | } |
76 | 75 | ||
77 | 76 | ||
78 | static int ldo (int (*f)(lua_State *l, const l_char *), const l_char *name, | 77 | static int ldo (int (*f)(lua_State *l, const char *), const char *name, |
79 | int clear) { | 78 | int clear) { |
80 | int res; | 79 | int res; |
81 | handler h = lreset(); | 80 | handler h = lreset(); |
@@ -86,45 +85,45 @@ static int ldo (int (*f)(lua_State *l, const l_char *), const l_char *name, | |||
86 | lua_settop(L, top); /* remove eventual results */ | 85 | lua_settop(L, top); /* remove eventual results */ |
87 | /* Lua gives no message in such cases, so lua.c provides one */ | 86 | /* Lua gives no message in such cases, so lua.c provides one */ |
88 | if (res == LUA_ERRMEM) { | 87 | if (res == LUA_ERRMEM) { |
89 | fprintf(stderr, LUA_PROGNAME l_s("memory allocation error\n")); | 88 | fprintf(stderr, LUA_PROGNAME "memory allocation error\n"); |
90 | } | 89 | } |
91 | else if (res == LUA_ERRERR) | 90 | else if (res == LUA_ERRERR) |
92 | fprintf(stderr, LUA_PROGNAME l_s("error in error message\n")); | 91 | fprintf(stderr, LUA_PROGNAME "error in error message\n"); |
93 | return res; | 92 | return res; |
94 | } | 93 | } |
95 | 94 | ||
96 | 95 | ||
97 | static void print_message (void) { | 96 | static void print_message (void) { |
98 | fprintf(stderr, | 97 | fprintf(stderr, |
99 | l_s("usage: lua [options]. Available options are:\n") | 98 | "usage: lua [options]. Available options are:\n" |
100 | l_s(" - execute stdin as a file\n") | 99 | " - execute stdin as a file\n" |
101 | l_s(" -c close Lua when exiting\n") | 100 | " -c close Lua when exiting\n" |
102 | l_s(" -e stat execute string `stat'\n") | 101 | " -e stat execute string `stat'\n" |
103 | l_s(" -f name execute file `name' with remaining arguments in table `arg'\n") | 102 | " -f name execute file `name' with remaining arguments in table `arg'\n" |
104 | l_s(" -i enter interactive mode with prompt\n") | 103 | " -i enter interactive mode with prompt\n" |
105 | l_s(" -q enter interactive mode without prompt\n") | 104 | " -q enter interactive mode without prompt\n" |
106 | l_s(" -sNUM set stack size to NUM (must be the first option)\n") | 105 | " -sNUM set stack size to NUM (must be the first option)\n" |
107 | l_s(" -v print version information\n") | 106 | " -v print version information\n" |
108 | l_s(" a=b set global `a' to string `b'\n") | 107 | " a=b set global `a' to string `b'\n" |
109 | l_s(" name execute file `name'\n") | 108 | " name execute file `name'\n" |
110 | ); | 109 | ); |
111 | } | 110 | } |
112 | 111 | ||
113 | 112 | ||
114 | static void print_version (void) { | 113 | static void print_version (void) { |
115 | printf(l_s("%.80s %.80s\n"), l_s(LUA_VERSION), l_s(LUA_COPYRIGHT)); | 114 | printf("%.80s %.80s\n", LUA_VERSION, LUA_COPYRIGHT); |
116 | } | 115 | } |
117 | 116 | ||
118 | 117 | ||
119 | static void assign (l_char *arg) { | 118 | static void assign (char *arg) { |
120 | l_char *eq = strchr(arg, l_c('=')); | 119 | char *eq = strchr(arg, '='); |
121 | *eq = l_c('\0'); /* spilt `arg' in two strings (name & value) */ | 120 | *eq = '\0'; /* spilt `arg' in two strings (name & value) */ |
122 | lua_pushstring(L, eq+1); | 121 | lua_pushstring(L, eq+1); |
123 | lua_setglobal(L, arg); | 122 | lua_setglobal(L, arg); |
124 | } | 123 | } |
125 | 124 | ||
126 | 125 | ||
127 | static void getargs (l_char *argv[]) { | 126 | static void getargs (char *argv[]) { |
128 | int i; | 127 | int i; |
129 | lua_newtable(L); | 128 | lua_newtable(L); |
130 | for (i=0; argv[i]; i++) { | 129 | for (i=0; argv[i]; i++) { |
@@ -134,24 +133,24 @@ static void getargs (l_char *argv[]) { | |||
134 | lua_settable(L, -3); | 133 | lua_settable(L, -3); |
135 | } | 134 | } |
136 | /* arg.n = maximum index in table `arg' */ | 135 | /* arg.n = maximum index in table `arg' */ |
137 | lua_pushliteral(L, l_s("n")); | 136 | lua_pushliteral(L, "n"); |
138 | lua_pushnumber(L, i-1); | 137 | lua_pushnumber(L, i-1); |
139 | lua_settable(L, -3); | 138 | lua_settable(L, -3); |
140 | } | 139 | } |
141 | 140 | ||
142 | 141 | ||
143 | static int l_getargs (lua_State *l) { | 142 | static int l_getargs (lua_State *l) { |
144 | l_char **argv = (l_char **)lua_touserdata(l, lua_upvalueindex(1)); | 143 | char **argv = (char **)lua_touserdata(l, lua_upvalueindex(1)); |
145 | getargs(argv); | 144 | getargs(argv); |
146 | return 1; | 145 | return 1; |
147 | } | 146 | } |
148 | 147 | ||
149 | 148 | ||
150 | static int file_input (const l_char *argv) { | 149 | static int file_input (const char *argv) { |
151 | int result = ldo(lua_dofile, argv, 1); | 150 | int result = ldo(lua_dofile, argv, 1); |
152 | if (result) { | 151 | if (result) { |
153 | if (result == LUA_ERRFILE) { | 152 | if (result == LUA_ERRFILE) { |
154 | fprintf(stderr, LUA_PROGNAME l_s("cannot execute file ")); | 153 | fprintf(stderr, LUA_PROGNAME "cannot execute file "); |
155 | perror(argv); | 154 | perror(argv); |
156 | } | 155 | } |
157 | return EXIT_FAILURE; | 156 | return EXIT_FAILURE; |
@@ -167,12 +166,12 @@ static int file_input (const l_char *argv) { | |||
167 | #endif | 166 | #endif |
168 | 167 | ||
169 | 168 | ||
170 | static const l_char *get_prompt (int prompt) { | 169 | static const char *get_prompt (int prompt) { |
171 | if (!prompt) | 170 | if (!prompt) |
172 | return l_s(""); | 171 | return ""; |
173 | else { | 172 | else { |
174 | const l_char *s; | 173 | const char *s; |
175 | lua_getglobal(L, l_s("_PROMPT")); | 174 | lua_getglobal(L, "_PROMPT"); |
176 | s = lua_tostring(L, -1); | 175 | s = lua_tostring(L, -1); |
177 | if (!s) s = PROMPT; | 176 | if (!s) s = PROMPT; |
178 | lua_pop(L, 1); /* remove global */ | 177 | lua_pop(L, 1); /* remove global */ |
@@ -188,20 +187,20 @@ static void manual_input (int version, int prompt) { | |||
188 | int toprint = 0; | 187 | int toprint = 0; |
189 | fputs(get_prompt(prompt), stdout); /* show prompt */ | 188 | fputs(get_prompt(prompt), stdout); /* show prompt */ |
190 | for(;;) { | 189 | for(;;) { |
191 | l_char buffer[MAXINPUT]; | 190 | char buffer[MAXINPUT]; |
192 | size_t l; | 191 | size_t l; |
193 | if (fgets(buffer, sizeof(buffer), stdin) == NULL) { | 192 | if (fgets(buffer, sizeof(buffer), stdin) == NULL) { |
194 | printf(l_s("\n")); | 193 | printf("\n"); |
195 | return; | 194 | return; |
196 | } | 195 | } |
197 | if (firstline && buffer[0] == l_c('=')) { | 196 | if (firstline && buffer[0] == '=') { |
198 | buffer[0] = l_c(' '); | 197 | buffer[0] = ' '; |
199 | lua_pushstring(L, l_s("return")); | 198 | lua_pushstring(L, "return"); |
200 | toprint = 1; | 199 | toprint = 1; |
201 | } | 200 | } |
202 | l = strlen(buffer); | 201 | l = strlen(buffer); |
203 | if (buffer[l-1] == l_c('\n') && buffer[l-2] == l_c('\\')) { | 202 | if (buffer[l-1] == '\n' && buffer[l-2] == '\\') { |
204 | buffer[l-2] = l_c('\n'); | 203 | buffer[l-2] = '\n'; |
205 | lua_pushlstring(L, buffer, l-1); | 204 | lua_pushlstring(L, buffer, l-1); |
206 | } | 205 | } |
207 | else { | 206 | else { |
@@ -214,7 +213,7 @@ static void manual_input (int version, int prompt) { | |||
214 | ldo(lua_dostring, lua_tostring(L, 1), 0); | 213 | ldo(lua_dostring, lua_tostring(L, 1), 0); |
215 | lua_remove(L, 1); /* remove ran string */ | 214 | lua_remove(L, 1); /* remove ran string */ |
216 | if (toprint && lua_gettop(L) > 0) { /* any result to print? */ | 215 | if (toprint && lua_gettop(L) > 0) { /* any result to print? */ |
217 | lua_getglobal(L, l_s("print")); | 216 | lua_getglobal(L, "print"); |
218 | lua_insert(L, 1); | 217 | lua_insert(L, 1); |
219 | lua_call(L, lua_gettop(L)-1, 0); | 218 | lua_call(L, lua_gettop(L)-1, 0); |
220 | } | 219 | } |
@@ -224,7 +223,7 @@ static void manual_input (int version, int prompt) { | |||
224 | } | 223 | } |
225 | 224 | ||
226 | 225 | ||
227 | static int handle_argv (l_char *argv[], int *toclose) { | 226 | static int handle_argv (char *argv[], int *toclose) { |
228 | if (*argv == NULL) { /* no more arguments? */ | 227 | if (*argv == NULL) { /* no more arguments? */ |
229 | if (isatty(0)) { | 228 | if (isatty(0)) { |
230 | manual_input(1, 1); | 229 | manual_input(1, 1); |
@@ -235,8 +234,8 @@ static int handle_argv (l_char *argv[], int *toclose) { | |||
235 | else { /* other arguments; loop over them */ | 234 | else { /* other arguments; loop over them */ |
236 | int i; | 235 | int i; |
237 | for (i = 0; argv[i] != NULL; i++) { | 236 | for (i = 0; argv[i] != NULL; i++) { |
238 | if (argv[i][0] != l_c('-')) { /* not an option? */ | 237 | if (argv[i][0] != '-') { /* not an option? */ |
239 | if (strchr(argv[i], l_c('='))) | 238 | if (strchr(argv[i], '=')) |
240 | assign(argv[i]); | 239 | assign(argv[i]); |
241 | else | 240 | else |
242 | if (file_input(argv[i]) != EXIT_SUCCESS) | 241 | if (file_input(argv[i]) != EXIT_SUCCESS) |
@@ -247,49 +246,49 @@ static int handle_argv (l_char *argv[], int *toclose) { | |||
247 | ldo(lua_dofile, NULL, 1); /* executes stdin as a file */ | 246 | ldo(lua_dofile, NULL, 1); /* executes stdin as a file */ |
248 | break; | 247 | break; |
249 | } | 248 | } |
250 | case l_c('i'): { | 249 | case 'i': { |
251 | manual_input(0, 1); | 250 | manual_input(0, 1); |
252 | break; | 251 | break; |
253 | } | 252 | } |
254 | case l_c('q'): { | 253 | case 'q': { |
255 | manual_input(0, 0); | 254 | manual_input(0, 0); |
256 | break; | 255 | break; |
257 | } | 256 | } |
258 | case l_c('c'): { | 257 | case 'c': { |
259 | *toclose = 1; | 258 | *toclose = 1; |
260 | break; | 259 | break; |
261 | } | 260 | } |
262 | case l_c('v'): { | 261 | case 'v': { |
263 | print_version(); | 262 | print_version(); |
264 | break; | 263 | break; |
265 | } | 264 | } |
266 | case l_c('e'): { | 265 | case 'e': { |
267 | i++; | 266 | i++; |
268 | if (argv[i] == NULL) { | 267 | if (argv[i] == NULL) { |
269 | print_message(); | 268 | print_message(); |
270 | return EXIT_FAILURE; | 269 | return EXIT_FAILURE; |
271 | } | 270 | } |
272 | if (ldo(lua_dostring, argv[i], 1) != 0) { | 271 | if (ldo(lua_dostring, argv[i], 1) != 0) { |
273 | fprintf(stderr, LUA_PROGNAME l_s("error running argument `%.99s'\n"), | 272 | fprintf(stderr, LUA_PROGNAME "error running argument `%.99s'\n", |
274 | argv[i]); | 273 | argv[i]); |
275 | return EXIT_FAILURE; | 274 | return EXIT_FAILURE; |
276 | } | 275 | } |
277 | break; | 276 | break; |
278 | } | 277 | } |
279 | case l_c('f'): { | 278 | case 'f': { |
280 | i++; | 279 | i++; |
281 | if (argv[i] == NULL) { | 280 | if (argv[i] == NULL) { |
282 | print_message(); | 281 | print_message(); |
283 | return EXIT_FAILURE; | 282 | return EXIT_FAILURE; |
284 | } | 283 | } |
285 | getargs(argv+i); /* collect remaining arguments */ | 284 | getargs(argv+i); /* collect remaining arguments */ |
286 | lua_setglobal(L, l_s("arg")); | 285 | lua_setglobal(L, "arg"); |
287 | return file_input(argv[i]); /* stop scanning arguments */ | 286 | return file_input(argv[i]); /* stop scanning arguments */ |
288 | } | 287 | } |
289 | case l_c('s'): { | 288 | case 's': { |
290 | if (i == 0) break; /* option already handled */ | 289 | if (i == 0) break; /* option already handled */ |
291 | fprintf(stderr, | 290 | fprintf(stderr, |
292 | LUA_PROGNAME l_s("stack size (`-s') must be the first option\n")); | 291 | LUA_PROGNAME "stack size (`-s') must be the first option\n"); |
293 | return EXIT_FAILURE; | 292 | return EXIT_FAILURE; |
294 | } | 293 | } |
295 | default: { | 294 | default: { |
@@ -303,12 +302,12 @@ static int handle_argv (l_char *argv[], int *toclose) { | |||
303 | } | 302 | } |
304 | 303 | ||
305 | 304 | ||
306 | static int getstacksize (int argc, l_char *argv[]) { | 305 | static int getstacksize (int argc, char *argv[]) { |
307 | int stacksize = 0; | 306 | int stacksize = 0; |
308 | if (argc >= 2 && argv[1][0] == l_c('-') && argv[1][1] == l_c('s')) { | 307 | if (argc >= 2 && argv[1][0] == '-' && argv[1][1] == 's') { |
309 | stacksize = strtol(&argv[1][2], NULL, 10); | 308 | stacksize = strtol(&argv[1][2], NULL, 10); |
310 | if (stacksize <= 0) { | 309 | if (stacksize <= 0) { |
311 | fprintf(stderr, LUA_PROGNAME l_s("invalid stack size ('%.20s')\n"), | 310 | fprintf(stderr, LUA_PROGNAME "invalid stack size ('%.20s')\n", |
312 | &argv[1][2]); | 311 | &argv[1][2]); |
313 | exit(EXIT_FAILURE); | 312 | exit(EXIT_FAILURE); |
314 | } | 313 | } |
@@ -317,10 +316,10 @@ static int getstacksize (int argc, l_char *argv[]) { | |||
317 | } | 316 | } |
318 | 317 | ||
319 | 318 | ||
320 | static void register_getargs (l_char *argv[]) { | 319 | static void register_getargs (char *argv[]) { |
321 | lua_newuserdatabox(L, argv); | 320 | lua_newuserdatabox(L, argv); |
322 | lua_pushcclosure(L, l_getargs, 1); | 321 | lua_pushcclosure(L, l_getargs, 1); |
323 | lua_setglobal(L, l_s("getargs")); | 322 | lua_setglobal(L, "getargs"); |
324 | } | 323 | } |
325 | 324 | ||
326 | 325 | ||
@@ -333,7 +332,7 @@ static void openstdlibs (lua_State *l) { | |||
333 | } | 332 | } |
334 | 333 | ||
335 | 334 | ||
336 | int main (int argc, l_char *argv[]) { | 335 | int main (int argc, char *argv[]) { |
337 | int status; | 336 | int status; |
338 | int toclose = 0; | 337 | int toclose = 0; |
339 | L = lua_open(getstacksize(argc, argv)); /* create state */ | 338 | L = lua_open(getstacksize(argc, argv)); /* create state */ |