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 */ |
