Guido van Rossum | 220ecc8 | 1997-11-18 21:03:39 +0000 | [diff] [blame] | 1 | /*********************************************************** |
| 2 | Copyright (C) 1997 Martin von Löwis |
| 3 | |
| 4 | Permission to use, copy, modify, and distribute this software and its |
| 5 | documentation for any purpose and without fee is hereby granted, |
| 6 | provided that the above copyright notice appear in all copies. |
| 7 | |
| 8 | This software comes with no warranty. Use at your own risk. |
| 9 | ******************************************************************/ |
| 10 | |
| 11 | #include <stdio.h> |
| 12 | #include <errno.h> |
| 13 | #include <locale.h> |
| 14 | #include <string.h> |
| 15 | #include <limits.h> |
| 16 | #include "Python.h" |
| 17 | |
| 18 | static char locale__doc__[]="Support for POSIX locales."; |
| 19 | |
| 20 | static PyObject *Error; |
| 21 | |
| 22 | /* support functions for formatting floating point numbers */ |
| 23 | |
| 24 | static char setlocale__doc__[]= |
| 25 | "(integer,string=None) -> string. Activates/queries locale processing." |
| 26 | ; |
| 27 | |
| 28 | /* to record the LC_NUMERIC settings */ |
| 29 | static PyObject* grouping=0; |
| 30 | static PyObject* thousands_sep=0; |
| 31 | static PyObject* decimal_point=0; |
| 32 | /* if non-null, indicates that LC_NUMERIC is different from "C" */ |
| 33 | static char* saved_numeric=0; |
| 34 | |
| 35 | /* the grouping is terminated by either 0 or CHAR_MAX */ |
| 36 | static PyObject* |
| 37 | copy_grouping(s) |
| 38 | char* s; |
| 39 | { |
| 40 | int i; |
| 41 | PyObject *result,*val=0; |
| 42 | if(s[0]=='\0') |
| 43 | /* empty string: no grouping at all */ |
| 44 | return PyList_New(0); |
| 45 | for(i=0;s[i]!='\0' && s[i]!=CHAR_MAX;i++) |
| 46 | /* nothing */; |
| 47 | result = PyList_New(i+1); |
| 48 | if(!result)return NULL; |
| 49 | i=-1; |
| 50 | do{ |
| 51 | i++; |
| 52 | val=PyInt_FromLong(s[i]); |
| 53 | if(!val)break; |
| 54 | if(PyList_SetItem(result,i,val)){ |
| 55 | Py_DECREF(val); |
| 56 | val=0; |
| 57 | break; |
| 58 | } |
| 59 | }while(s[i]!='\0' && s[i]!=CHAR_MAX); |
| 60 | if(!val){ |
| 61 | Py_DECREF(result); |
| 62 | return NULL; |
| 63 | } |
| 64 | return result; |
| 65 | } |
| 66 | |
| 67 | static void |
| 68 | fixup_ulcase() |
| 69 | { |
| 70 | PyObject *mods,*strop,*string,*ulo; |
| 71 | unsigned char ul[256]; |
| 72 | int n,c; |
| 73 | |
| 74 | /* finding sys.modules */ |
| 75 | mods=PyImport_GetModuleDict(); |
| 76 | if(!mods)return; |
| 77 | /* finding the module */ |
| 78 | string=PyDict_GetItemString(mods,"string"); |
| 79 | if(string) |
| 80 | string=PyModule_GetDict(string); |
| 81 | strop=PyDict_GetItemString(mods,"strop"); |
| 82 | if(strop) |
| 83 | strop=PyModule_GetDict(strop); |
| 84 | if(!string && !strop)return; |
| 85 | /* create uppercase */ |
| 86 | n = 0; |
| 87 | for (c = 0; c < 256; c++) { |
| 88 | if (isupper(c)) |
| 89 | ul[n++] = c; |
| 90 | } |
| 91 | ulo=PyString_FromStringAndSize(ul,n); |
| 92 | if(!ulo)return; |
| 93 | if(string) |
| 94 | PyDict_SetItemString(string,"uppercase",ulo); |
| 95 | if(strop) |
| 96 | PyDict_SetItemString(strop,"uppercase",ulo); |
| 97 | Py_DECREF(ulo); |
| 98 | /* create lowercase */ |
| 99 | n = 0; |
| 100 | for (c = 0; c < 256; c++) { |
| 101 | if (islower(c)) |
| 102 | ul[n++] = c; |
| 103 | } |
| 104 | ulo=PyString_FromStringAndSize(ul,n); |
| 105 | if(!ulo)return; |
| 106 | if(string) |
| 107 | PyDict_SetItemString(string,"lowercase",ulo); |
| 108 | if(strop) |
| 109 | PyDict_SetItemString(strop,"lowercase",ulo); |
| 110 | Py_DECREF(ulo); |
| 111 | /* create letters */ |
| 112 | n = 0; |
| 113 | for (c = 0; c < 256; c++) { |
| 114 | if (isalpha(c)) |
| 115 | ul[n++] = c; |
| 116 | } |
| 117 | ulo=PyString_FromStringAndSize(ul,n); |
| 118 | if(!ulo)return; |
| 119 | if(string) |
| 120 | PyDict_SetItemString(string,"letters",ulo); |
| 121 | Py_DECREF(ulo); |
| 122 | } |
| 123 | |
| 124 | |
| 125 | static PyObject* |
| 126 | PyLocale_setlocale(self,args) |
| 127 | PyObject *self; |
| 128 | PyObject *args; |
| 129 | { |
| 130 | int category; |
| 131 | char *locale=0,*result; |
| 132 | PyObject *result_object; |
| 133 | struct lconv *lc; |
| 134 | if(!PyArg_ParseTuple(args,"i|z",&category,&locale))return 0; |
| 135 | if(locale){ |
| 136 | /* set locale */ |
| 137 | result=setlocale(category,locale); |
| 138 | if(!result){ |
| 139 | /* operation failed, no setting was changed */ |
| 140 | PyErr_SetString(Error,"locale setting not supported"); |
| 141 | return NULL; |
| 142 | } |
| 143 | result_object=PyString_FromString(result); |
| 144 | if(!result)return NULL; |
| 145 | /* record changes to LC_NUMERIC */ |
| 146 | if(category==LC_NUMERIC || category==LC_ALL){ |
| 147 | if(strcmp(locale,"C")==0 || strcmp(locale,"POSIX")==0){ |
| 148 | /* user just asked for default numeric locale */ |
| 149 | if(saved_numeric)free(saved_numeric); |
| 150 | saved_numeric=0; |
| 151 | }else{ |
| 152 | /* remember values */ |
| 153 | lc=localeconv(); |
| 154 | Py_XDECREF(grouping); |
| 155 | grouping=copy_grouping(lc->grouping); |
| 156 | Py_XDECREF(thousands_sep); |
| 157 | thousands_sep=PyString_FromString(lc->thousands_sep); |
| 158 | Py_XDECREF(decimal_point); |
| 159 | decimal_point=PyString_FromString(lc->decimal_point); |
| 160 | saved_numeric = strdup(locale); |
| 161 | |
| 162 | /* restore to "C" */ |
| 163 | setlocale(LC_NUMERIC,"C"); |
| 164 | } |
| 165 | } |
| 166 | /* record changes to LC_CTYPE */ |
| 167 | if(category==LC_CTYPE || category==LC_ALL) |
| 168 | fixup_ulcase(); |
| 169 | /* things that got wrong up to here are ignored */ |
| 170 | PyErr_Clear(); |
| 171 | }else{ |
| 172 | /* get locale */ |
| 173 | /* restore LC_NUMERIC first, if appropriate */ |
| 174 | if(saved_numeric) |
| 175 | setlocale(LC_NUMERIC,saved_numeric); |
| 176 | result=setlocale(category,NULL); |
| 177 | if(!result){ |
| 178 | PyErr_SetString(Error,"locale query failed"); |
| 179 | return NULL; |
| 180 | } |
| 181 | result_object=PyString_FromString(result); |
| 182 | /* restore back to "C" */ |
| 183 | if(saved_numeric) |
| 184 | setlocale(LC_NUMERIC,"C"); |
| 185 | } |
| 186 | return result_object; |
| 187 | } |
| 188 | |
| 189 | static char localeconv__doc__[]= |
| 190 | "() -> dict. Returns numeric and monetary locale-specific parameters." |
| 191 | ; |
| 192 | |
| 193 | static PyObject* |
| 194 | PyLocale_localeconv(self,args) |
| 195 | PyObject *self; |
| 196 | PyObject *args; |
| 197 | { |
| 198 | PyObject* result; |
| 199 | struct lconv *l; |
| 200 | PyObject *x; |
| 201 | if(!PyArg_NoArgs(args))return 0; |
| 202 | result = PyDict_New(); |
| 203 | if(!result)return 0; |
| 204 | /* if LC_NUMERIC is different in the C library, use saved value */ |
| 205 | l = localeconv(); |
| 206 | /* hopefully, the localeconv result survives the C library calls |
| 207 | involved herein */ |
| 208 | #define RESULT_STRING(s) \ |
| 209 | x=PyString_FromString(l->s);if(!x)goto failed;PyDict_SetItemString(result,#s,x);Py_XDECREF(x) |
| 210 | #define RESULT_INT(i) \ |
| 211 | x=PyInt_FromLong(l->i);if(!x)goto failed;PyDict_SetItemString(result,#i,x);Py_XDECREF(x) |
| 212 | |
| 213 | /* Numeric information */ |
| 214 | if(saved_numeric){ |
| 215 | /* cannot use localeconv results */ |
| 216 | PyDict_SetItemString(result,"decimal_point",decimal_point); |
| 217 | PyDict_SetItemString(result,"grouping",grouping); |
| 218 | PyDict_SetItemString(result,"thousands_sep",thousands_sep); |
| 219 | }else{ |
| 220 | RESULT_STRING(decimal_point); |
| 221 | RESULT_STRING(thousands_sep); |
| 222 | x=copy_grouping(l->grouping); |
| 223 | if(!x)goto failed; |
| 224 | PyDict_SetItemString(result,"grouping",x); |
| 225 | Py_XDECREF(x); |
| 226 | } |
| 227 | |
| 228 | /* Monetary information */ |
| 229 | RESULT_STRING(int_curr_symbol); |
| 230 | RESULT_STRING(currency_symbol); |
| 231 | RESULT_STRING(mon_decimal_point); |
| 232 | RESULT_STRING(mon_thousands_sep); |
| 233 | x=copy_grouping(l->mon_grouping); |
| 234 | if(!x)goto failed; |
| 235 | PyDict_SetItemString(result,"mon_grouping",x); |
| 236 | Py_XDECREF(x); |
| 237 | RESULT_STRING(positive_sign); |
| 238 | RESULT_STRING(negative_sign); |
| 239 | RESULT_INT(int_frac_digits); |
| 240 | RESULT_INT(frac_digits); |
| 241 | RESULT_INT(p_cs_precedes); |
| 242 | RESULT_INT(p_sep_by_space); |
| 243 | RESULT_INT(n_cs_precedes); |
| 244 | RESULT_INT(n_sep_by_space); |
| 245 | RESULT_INT(p_sign_posn); |
| 246 | RESULT_INT(n_sign_posn); |
| 247 | |
| 248 | return result; |
| 249 | failed: |
| 250 | Py_XDECREF(result); |
| 251 | Py_XDECREF(x); |
| 252 | return NULL; |
| 253 | } |
| 254 | |
| 255 | static char strcoll__doc__[]= |
| 256 | "string,string -> int. Compares two strings according to the locale." |
| 257 | ; |
| 258 | |
| 259 | static PyObject* |
| 260 | PyLocale_strcoll(self,args) |
| 261 | PyObject *self; |
| 262 | PyObject *args; |
| 263 | { |
| 264 | char *s1,*s2; |
| 265 | if(!PyArg_ParseTuple(args,"ss",&s1,&s2)) |
| 266 | return NULL; |
| 267 | return PyInt_FromLong(strcoll(s1,s2)); |
| 268 | } |
| 269 | |
| 270 | static char strxfrm__doc__[]= |
| 271 | "string -> string. Returns a string that behaves for cmp locale-aware." |
| 272 | ; |
| 273 | |
| 274 | static PyObject* |
| 275 | PyLocale_strxfrm(self,args) |
| 276 | PyObject* self; |
| 277 | PyObject* args; |
| 278 | { |
| 279 | char *s,*buf; |
| 280 | int n1,n2; |
| 281 | PyObject *result; |
| 282 | if(!PyArg_ParseTuple(args,"s",&s)) |
| 283 | return NULL; |
| 284 | /* assume no change in size, first */ |
| 285 | n1=strlen(s)+1; |
| 286 | buf=Py_Malloc(n1); |
| 287 | if(!buf)return NULL; |
| 288 | n2=strxfrm(buf,s,n1); |
| 289 | if(n2>n1){ |
| 290 | /* more space needed */ |
| 291 | buf=Py_Realloc(buf,n2); |
| 292 | if(!buf)return NULL; |
| 293 | strxfrm(buf,s,n2); |
| 294 | } |
| 295 | result=PyString_FromString(buf); |
| 296 | Py_Free(buf); |
| 297 | return result; |
| 298 | } |
| 299 | |
| 300 | static struct PyMethodDef PyLocale_Methods[] = { |
| 301 | {"setlocale",(PyCFunction)PyLocale_setlocale,1,setlocale__doc__}, |
| 302 | {"localeconv",(PyCFunction)PyLocale_localeconv,0,localeconv__doc__}, |
| 303 | {"strcoll",(PyCFunction)PyLocale_strcoll,1,strcoll__doc__}, |
| 304 | {"strxfrm",(PyCFunction)PyLocale_strxfrm,1,strxfrm__doc__}, |
| 305 | {NULL, NULL} |
| 306 | }; |
| 307 | |
| 308 | void |
| 309 | init_locale() |
| 310 | { |
| 311 | PyObject *m,*d,*x; |
| 312 | m=Py_InitModule("_locale",PyLocale_Methods); |
| 313 | d = PyModule_GetDict(m); |
| 314 | x=PyInt_FromLong(LC_CTYPE); |
| 315 | PyDict_SetItemString(d,"LC_CTYPE",x); |
| 316 | Py_XDECREF(x); |
| 317 | |
| 318 | x=PyInt_FromLong(LC_TIME); |
| 319 | PyDict_SetItemString(d,"LC_TIME",x); |
| 320 | Py_XDECREF(x); |
| 321 | |
| 322 | x=PyInt_FromLong(LC_COLLATE); |
| 323 | PyDict_SetItemString(d,"LC_COLLATE",x); |
| 324 | Py_XDECREF(x); |
| 325 | |
| 326 | x=PyInt_FromLong(LC_MONETARY); |
| 327 | PyDict_SetItemString(d,"LC_MONETARY",x); |
| 328 | Py_XDECREF(x); |
| 329 | |
Guido van Rossum | 8d9c2e3 | 1997-12-09 19:35:11 +0000 | [diff] [blame] | 330 | #ifdef LC_MESSAGES |
Guido van Rossum | 220ecc8 | 1997-11-18 21:03:39 +0000 | [diff] [blame] | 331 | x=PyInt_FromLong(LC_MESSAGES); |
| 332 | PyDict_SetItemString(d,"LC_MESSAGES",x); |
| 333 | Py_XDECREF(x); |
Guido van Rossum | 8d9c2e3 | 1997-12-09 19:35:11 +0000 | [diff] [blame] | 334 | #endif /* LC_MESSAGES */ |
Guido van Rossum | 220ecc8 | 1997-11-18 21:03:39 +0000 | [diff] [blame] | 335 | |
| 336 | x=PyInt_FromLong(LC_NUMERIC); |
| 337 | PyDict_SetItemString(d,"LC_NUMERIC",x); |
| 338 | Py_XDECREF(x); |
| 339 | |
| 340 | x=PyInt_FromLong(LC_ALL); |
| 341 | PyDict_SetItemString(d,"LC_ALL",x); |
| 342 | Py_XDECREF(x); |
| 343 | |
| 344 | x=PyInt_FromLong(CHAR_MAX); |
| 345 | PyDict_SetItemString(d,"CHAR_MAX",x); |
| 346 | Py_XDECREF(x); |
| 347 | |
| 348 | Error = PyErr_NewException("locale.Error", NULL, NULL); |
| 349 | PyDict_SetItemString(d, "Error", Error); |
| 350 | |
| 351 | x=PyString_FromString(locale__doc__); |
| 352 | PyDict_SetItemString(d,"__doc__",x); |
| 353 | Py_XDECREF(x); |
| 354 | |
| 355 | if(PyErr_Occurred()) |
| 356 | Py_FatalError("Can't initialize module locale"); |
| 357 | } |