mpdm_s.c

   1 /*
   2
   3     MPDM - Minimum Profit Data Manager
   4     Copyright (C) 2003/2010 Angel Ortega <angel@triptico.com>
   5
   6     mpdm_s.c - String management
   7
   8     This program is free software; you can redistribute it and/or
   9     modify it under the terms of the GNU General Public License
  10     as published by the Free Software Foundation; either version 2
  11     of the License, or (at your option) any later version.
  12
  13     This program is distributed in the hope that it will be useful,
  14     but WITHOUT ANY WARRANTY; without even the implied warranty of
  15     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16     GNU General Public License for more details.
  17
  18     You should have received a copy of the GNU General Public License
  19     along with this program; if not, write to the Free Software
  20     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21
  22     http://www.triptico.com
  23
  24 */
  25
  26 #include "config.h"
  27
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <wchar.h>
  32 #include <locale.h>
  33 #include <wctype.h>
  34
  35 #ifdef CONFOPT_GETTEXT
  36 #include <libintl.h>
  37 #endif
  38
  39 #ifdef CONFOPT_WIN32
  40 #include <windows.h>
  41 #endif
  42
  43 #include "mpdm.h"
  44
  45
  46 /** code **/
  47
  48 void *mpdm_poke_o(void *dst, int *dsize, int *offset, const void *org, int osize, int esize)
  49 {
  50         if (org != NULL && osize) {
  51                 /* enough room? */
  52                 if (*offset + osize > *dsize) {
  53                         /* no; enlarge */
  54                         *dsize += osize;
  55
  56                         dst = realloc(dst, *dsize * esize);
  57                 }
  58
  59                 memcpy((char *)dst + (*offset * esize), org, osize * esize);
  60                 *offset += osize;
  61         }
  62
  63         return dst;
  64 }
  65
  66
  67 void *mpdm_poke(void *dst, int *dsize, const void *org, int osize, int esize)
  68 /* pokes (adds) org into dst, which is a dynamic string, making it grow */
  69 {
  70         int offset = *dsize;
  71
  72         return mpdm_poke_o(dst, dsize, &offset, org, osize, esize);
  73 }
  74
  75
  76 wchar_t *mpdm_pokewsn(wchar_t *dst, int *dsize, const wchar_t *str, int slen)
  77 /* adds a wide string to dst using mpdm_poke() with size */
  78 {
  79         if (str)
  80                 dst = mpdm_poke(dst, dsize, str, slen, sizeof(wchar_t));
  81
  82         return dst;
  83 }
  84
  85
  86 wchar_t *mpdm_pokews(wchar_t *dst, int *dsize, const wchar_t *str)
  87 /* adds a wide string to dst using mpdm_poke() */
  88 {
  89         if (str)
  90                 dst = mpdm_pokewsn(dst, dsize, str, wcslen(str));
  91
  92         return dst;
  93 }
  94
  95
  96 wchar_t *mpdm_pokev(wchar_t * dst, int *dsize, const mpdm_t v)
  97 /* adds the string in v to dst using mpdm_poke() */
  98 {
  99         if (v != NULL) {
 100                 const wchar_t *ptr = mpdm_string(v);
 101
 102                 mpdm_ref(v);
 103                 dst = mpdm_pokews(dst, dsize, ptr);
 104                 mpdm_unref(v);
 105         }
 106
 107         return dst;
 108 }
 109
 110
 111 wchar_t *mpdm_mbstowcs(const char *str, int *s, int l)
 112 /* converts an mbs to a wcs, but filling invalid chars
 113    with question marks instead of just failing */
 114 {
 115         wchar_t *ptr = NULL;
 116         char tmp[64];           /* really MB_CUR_MAX + 1 */
 117         wchar_t wc;
 118         int n, i, c, t = 0;
 119         char *cstr;
 120
 121         /* allow NULL values for s */
 122         if (s == NULL)
 123                 s = &t;
 124
 125         /* if there is a limit, duplicate and break the string */
 126         if (l >= 0) {
 127                 cstr = strdup(str);
 128                 cstr[l] = '\0';
 129         }
 130         else
 131                 cstr = (char *) str;
 132
 133         /* try first a direct conversion with mbstowcs */
 134         if ((*s = mbstowcs(NULL, cstr, 0)) != -1) {
 135                 /* direct conversion is possible; do it */
 136                 if ((ptr = malloc((*s + 1) * sizeof(wchar_t))) != NULL) {
 137                         mbstowcs(ptr, cstr, *s);
 138                         ptr[*s] = L'\0';
 139                 }
 140         }
 141         else {
 142                 /* zero everything */
 143                 *s = n = i = 0;
 144
 145                 for (;;) {
 146                         /* no more characters to process? */
 147                         if ((c = cstr[n + i]) == '\0' && i == 0)
 148                                 break;
 149
 150                         tmp[i++] = c;
 151                         tmp[i] = '\0';
 152
 153                         /* try to convert */
 154                         if (mbstowcs(&wc, tmp, 1) == (size_t) -1) {
 155                                 /* can still be an incomplete multibyte char? */
 156                                 if (c != '\0' && i <= (int) MB_CUR_MAX)
 157                                         continue;
 158                                 else {
 159                                         /* too many failing bytes; skip 1 byte */
 160                                         wc = L'?';
 161                                         i = 1;
 162                                 }
 163                         }
 164
 165                         /* skip used bytes and back again */
 166                         n += i;
 167                         i = 0;
 168
 169                         /* store new char */
 170                         if ((ptr = mpdm_poke(ptr, s, &wc, 1, sizeof(wchar_t))) == NULL)
 171                                 break;
 172                 }
 173
 174                 /* null terminate and count one less */
 175                 if (ptr != NULL) {
 176                         ptr = mpdm_poke(ptr, s, L"", 1, sizeof(wchar_t));
 177                         (*s)--;
 178                 }
 179         }
 180
 181         /* free the duplicate */
 182         if (cstr != str)
 183                 free(cstr);
 184
 185         return ptr;
 186 }
 187
 188
 189 char *mpdm_wcstombs(const wchar_t * str, int *s)
 190 /* converts a wcs to an mbs, but filling invalid chars
 191    with question marks instead of just failing */
 192 {
 193         char *ptr = NULL;
 194         char tmp[64];           /* really MB_CUR_MAX + 1 */
 195         int l, t = 0;
 196
 197         /* allow NULL values for s */
 198         if (s == NULL)
 199                 s = &t;
 200
 201         /* try first a direct conversion with wcstombs */
 202         if ((*s = wcstombs(NULL, str, 0)) != -1) {
 203                 /* direct conversion is possible; do it and return */
 204                 if ((ptr = malloc(*s + 1)) != NULL) {
 205                         wcstombs(ptr, str, *s);
 206                         ptr[*s] = '\0';
 207                 }
 208
 209                 return ptr;
 210         }
 211
 212         /* invalid encoding? convert characters one by one */
 213         *s = 0;
 214
 215         while (*str) {
 216                 if ((l = wctomb(tmp, *str)) <= 0) {
 217                         /* if char couldn't be converted,
 218                            write a question mark instead */
 219                         l = wctomb(tmp, L'?');
 220                 }
 221
 222                 tmp[l] = '\0';
 223                 if ((ptr = mpdm_poke(ptr, s, tmp, l, 1)) == NULL)
 224                         break;
 225
 226                 str++;
 227         }
 228
 229         /* null terminate and count one less */
 230         if (ptr != NULL) {
 231                 ptr = mpdm_poke(ptr, s, "", 1, 1);
 232                 (*s)--;
 233         }
 234
 235         return ptr;
 236 }
 237
 238
 239 mpdm_t mpdm_new_wcs(int flags, const wchar_t * str, int size, int cpy)
 240 /* creates a new string value from a wcs */
 241 {
 242         wchar_t *ptr;
 243
 244         /* a size of -1 means 'calculate it' */
 245         if (size == -1 && str != NULL)
 246                 size = wcslen(str);
 247
 248         /* create a copy? */
 249         if (cpy) {
 250                 /* free() on destruction */
 251                 flags |= MPDM_FREE;
 252
 253                 /* allocs */
 254                 if ((ptr = malloc((size + 1) * sizeof(wchar_t))) == NULL)
 255                         return NULL;
 256
 257                 /* if no source, reset to zeroes; otherwise, copy */
 258                 if (str == NULL)
 259                         memset(ptr, '\0', size * sizeof(wchar_t));
 260                 else {
 261                         wcsncpy(ptr, str, size);
 262                         ptr[size] = L'\0';
 263                 }
 264         }
 265         else
 266                 ptr = (wchar_t *)str;
 267
 268         /* it's a string */
 269         flags |= MPDM_STRING;
 270
 271         return mpdm_new(flags, ptr, size);
 272 }
 273
 274
 275 mpdm_t mpdm_new_mbstowcs(int flags, const char *str, int l)
 276 /* creates a new string value from an mbs */
 277 {
 278         wchar_t *ptr;
 279         int size;
 280
 281         if ((ptr = mpdm_mbstowcs(str, &size, l)) == NULL)
 282                 return NULL;
 283
 284         /* it's a string */
 285         flags |= (MPDM_STRING | MPDM_FREE);
 286
 287         return mpdm_new(flags, ptr, size);
 288 }
 289
 290
 291 mpdm_t mpdm_new_wcstombs(int flags, const wchar_t * str)
 292 /* creates a new mbs value from a wbs */
 293 {
 294         char *ptr;
 295         int size;
 296
 297         ptr = mpdm_wcstombs(str, &size);
 298
 299         flags |= MPDM_FREE;
 300
 301         /* unset the string flag; mbs,s are not 'strings' */
 302         flags &= ~MPDM_STRING;
 303
 304         return mpdm_new(flags, ptr, size);
 305 }
 306
 307
 308 mpdm_t mpdm_new_i(int ival)
 309 /* creates a new string value from an integer */
 310 {
 311         mpdm_t v;
 312         char tmp[32];
 313
 314         /* creates the visual representation */
 315         snprintf(tmp, sizeof(tmp), "%d", ival);
 316
 317         v = MPDM_MBS(tmp);
 318
 319         return mpdm_set_ival(v, ival);
 320 }
 321
 322
 323 mpdm_t mpdm_new_r(double rval)
 324 /* creates a new string value from a real number */
 325 {
 326         mpdm_t v;
 327         char tmp[128];
 328
 329         /* creates the visual representation */
 330         snprintf(tmp, sizeof(tmp), "%lf", rval);
 331
 332         /* manually strip useless zeroes */
 333         if (strchr(tmp, '.') != NULL) {
 334                 char *ptr;
 335
 336                 for (ptr = tmp + strlen(tmp) - 1; *ptr == '0'; ptr--);
 337
 338                 /* if it's over the ., strip it also */
 339                 if (*ptr != '.')
 340                         ptr++;
 341
 342                 *ptr = '\0';
 343         }
 344
 345         v = MPDM_MBS(tmp);
 346
 347         return mpdm_set_rval(v, rval);
 348 }
 349
 350
 351 /* interface */
 352
 353 /**
 354  * mpdm_string - Returns a printable representation of a value.
 355  * @v: the value
 356  *
 357  * Returns a printable representation of a value. For strings, it's
 358  * the value data itself; for any other type, a conversion to string
 359  * is returned instead. This value should be used immediately, as it
 360  * can be a pointer to a static buffer.
 361  * [Strings]
 362  */
 363 wchar_t *mpdm_string(const mpdm_t v)
 364 {
 365         static wchar_t wtmp[32];
 366         char tmp[32];
 367         static wchar_t *ret;
 368
 369         /* if it's NULL, return a constant */
 370         if (v == NULL)
 371                 ret = L"[NULL]";
 372         else
 373         /* if it's a string, return it */
 374         if (v->flags & MPDM_STRING)
 375                 ret = (wchar_t *) v->data;
 376         else {
 377                 /* otherwise, return a visual representation */
 378                 snprintf(tmp, sizeof(tmp), "%p", v);
 379                 mbstowcs(wtmp, tmp, sizeof(wtmp));
 380                 wtmp[(sizeof(wtmp) / sizeof(wchar_t)) - 1] = L'\0';
 381
 382                 ret = wtmp;
 383         }
 384
 385         return ret;
 386 }
 387
 388
 389 /**
 390  * mpdm_cmp - Compares two values.
 391  * @v1: the first value
 392  * @v2: the second value
 393  *
 394  * Compares two values. If both has the MPDM_STRING flag set,
 395  * a comparison using wcscoll() is returned; if both are arrays,
 396  * the size is compared first and, if they have the same number
 397  * elements, each one is compared; otherwise, a simple pointer
 398  * comparison is done.
 399  * [Strings]
 400  */
 401 int mpdm_cmp(const mpdm_t v1, const mpdm_t v2)
 402 {
 403         int r;
 404
 405         /* same values? */
 406         if (v1 == v2)
 407                 r = 0;
 408         else
 409         /* is any value NULL? */
 410         if (v1 == NULL)
 411                 r = -1;
 412         else
 413         if (v2 == NULL)
 414                 r = 1;
 415         else
 416         /* different values, but same content? (unlikely) */
 417         if (v1->data == v2->data)
 418                 r = 0;
 419         else
 420         if (MPDM_IS_STRING(v1) && MPDM_IS_STRING(v2))
 421                 r = wcscoll((wchar_t *) v1->data, (wchar_t *) v2->data);
 422         else
 423         if (MPDM_IS_ARRAY(v1) && MPDM_IS_ARRAY(v2)) {
 424                 /* compare first the sizes */
 425                 if ((r = mpdm_size(v1) - mpdm_size(v2)) == 0) {
 426                         int n;
 427
 428                         /* they have the same size;
 429                            compare each pair of elements */
 430                         for (n = 0; n < mpdm_size(v1); n++) {
 431                                 if ((r = mpdm_cmp(mpdm_aget(v1, n),
 432                                         mpdm_aget(v2, n))) != 0)
 433                                         break;
 434                         }
 435                 }
 436         }
 437         else
 438                 /* in any other case, compare just pointers */
 439                 r = (int) ((char *)v1->data - (char *)v2->data);
 440
 441         return r;
 442 }
 443
 444
 445 /**
 446  * mpdm_cmp_s - Compares two values (string version).
 447  * @v1: the first value
 448  * @v2: the second value
 449  *
 450  * Compares two values. Compares both values using wcscoll()
 451  * if the first one is a string, or returns 1 otherwise.
 452  */
 453 int mpdm_cmp_s(const mpdm_t v1, const wchar_t *v2)
 454 {
 455         int r;
 456
 457     mpdm_ref(v1);
 458
 459         if (MPDM_IS_STRING(v1))
 460                 r = wcscoll((wchar_t *) v1->data, v2);
 461         else
 462                 r = (int) ((wchar_t *)v1->data - v2);
 463
 464     mpdm_unref(v1);
 465
 466         return r;
 467 }
 468
 469
 470 /**
 471  * mpdm_splice - Creates a new string value from another.
 472  * @v: the original value
 473  * @i: the value to be inserted
 474  * @offset: offset where the substring is to be inserted
 475  * @del: number of characters to delete
 476  *
 477  * Creates a new string value from @v, deleting @del chars at @offset
 478  * and substituting them by @i. If @del is 0, no deletion is done.
 479  * both @offset and @del can be negative; if this is the case, it's
 480  * assumed as counting from the end of @v. If @v is NULL, @i will become
 481  * the new string, and both @offset and @del will be ignored. If @v is
 482  * not NULL and @i is, no insertion process is done (only deletion, if
 483  * applicable).
 484  *
 485  * Returns a two element array, with the new string in the first
 486  * element and the deleted string in the second (with a NULL value
 487  * if @del is 0).
 488  * [Strings]
 489  */
 490 mpdm_t mpdm_splice(const mpdm_t v, const mpdm_t i, int offset, int del)
 491 {
 492         mpdm_t w;
 493         mpdm_t n = NULL;
 494         mpdm_t d = NULL;
 495         int os, ns, r;
 496         int ins = 0;
 497         wchar_t *ptr;
 498
 499         mpdm_ref(v);
 500         mpdm_ref(i);
 501
 502         if (v != NULL) {
 503                 os = mpdm_size(v);
 504
 505                 /* negative offsets start from the end */
 506                 if (offset < 0)
 507                         offset = os + 1 - offset;
 508
 509                 /* never add further the end */
 510                 if (offset > os)
 511                         offset = os;
 512
 513                 /* negative del counts as 'characters left' */
 514                 if (del < 0)
 515                         del = os + 1 - offset + del;
 516
 517                 /* something to delete? */
 518                 if (del > 0) {
 519                         /* never delete further the end */
 520                         if (offset + del > os)
 521                                 del = os - offset;
 522
 523                         /* deleted string */
 524                         d = MPDM_NS(((wchar_t *) v->data) + offset, del);
 525                 }
 526                 else
 527                         del = 0;
 528
 529                 /* something to insert? */
 530                 ins = mpdm_size(i);
 531
 532                 /* new size and remainder */
 533                 ns = os + ins - del;
 534                 r = offset + del;
 535
 536                 n = MPDM_NS(NULL, ns);
 537
 538                 ptr = (wchar_t *)n->data;
 539
 540                 /* copy the beginning */
 541                 if (offset > 0) {
 542                         wcsncpy(ptr, v->data, offset);
 543                         ptr += offset;
 544                 }
 545
 546                 /* copy the text to be inserted */
 547                 if (ins > 0) {
 548                         wcsncpy(ptr, i->data, ins);
 549                         ptr += ins;
 550                 }
 551
 552                 /* copy the remaining */
 553                 os -= r;
 554                 if (os > 0) {
 555                         wcsncpy(ptr, ((wchar_t *) v->data) + r, os);
 556                         ptr += os;
 557                 }
 558
 559                 /* null terminate */
 560                 *ptr = L'\0';
 561         }
 562         else
 563                 n = i;
 564
 565         /* creates the output array */
 566         w = MPDM_A(2);
 567
 568         mpdm_aset(w, n, 0);
 569         mpdm_aset(w, d, 1);
 570
 571         mpdm_unref(i);
 572         mpdm_unref(v);
 573
 574         return w;
 575 }
 576
 577
 578 /**
 579  * mpdm_strcat_sn - Concatenates two strings (string with size version).
 580  * @s1: the first string
 581  * @s2: the second string
 582  * @size: the size of the second string
 583  *
 584  * Returns a new string formed by the concatenation of @s1 and @s2.
 585  * [Strings]
 586  */
 587 mpdm_t mpdm_strcat_sn(const mpdm_t s1, const wchar_t *s2, int size)
 588 {
 589         wchar_t *ptr = NULL;
 590         int s = 0;
 591         mpdm_t r;
 592
 593         if (s1 == NULL && s2 == NULL)
 594                 r = NULL;
 595         else {
 596                 ptr = mpdm_pokev(ptr, &s, s1);
 597                 ptr = mpdm_pokewsn(ptr, &s, s2, size);
 598
 599                 ptr = mpdm_poke(ptr, &s, L"", 1, sizeof(wchar_t));
 600                 r = MPDM_ENS(ptr, s - 1);
 601         }
 602
 603         return r;
 604 }
 605
 606
 607 /**
 608  * mpdm_strcat_s - Concatenates two strings (string version).
 609  * @s1: the first string
 610  * @s2: the second string
 611  *
 612  * Returns a new string formed by the concatenation of @s1 and @s2.
 613  * [Strings]
 614  */
 615 mpdm_t mpdm_strcat_s(const mpdm_t s1, const wchar_t *s2)
 616 {
 617         return mpdm_strcat_sn(s1, s2, s2 ? wcslen(s2) : 0);
 618 }
 619
 620
 621 /**
 622  * mpdm_strcat - Concatenates two strings.
 623  * @s1: the first string
 624  * @s2: the second string
 625  *
 626  * Returns a new string formed by the concatenation of @s1 and @s2.
 627  * [Strings]
 628  */
 629 mpdm_t mpdm_strcat(const mpdm_t s1, const mpdm_t s2)
 630 {
 631         mpdm_t r;
 632
 633         mpdm_ref(s2);
 634         r = mpdm_strcat_s(s1, s2 ? mpdm_string(s2) : NULL);
 635         mpdm_unref(s2);
 636
 637         return r;
 638 }
 639
 640
 641 /**
 642  * mpdm_ival - Returns a value's data as an integer.
 643  * @v: the value
 644  *
 645  * Returns a value's data as an integer. If the value is a string,
 646  * it's converted via sscanf and returned; non-string values have all
 647  * an ival of 0. The converted integer is cached, so costly string
 648  * conversions are only done once. Values created with the MPDM_IVAL
 649  * flag set have its ival cached from the beginning.
 650  * [Strings]
 651  * [Value Management]
 652  */
 653 int mpdm_ival(mpdm_t v)
 654 {
 655         int i = 0;
 656
 657     mpdm_ref(v);
 658
 659         if (v != NULL) {
 660                 /* if there is no cached integer, calculate it */
 661                 if (!(v->flags & MPDM_IVAL)) {
 662                         /* if it's a string, calculate it; other
 663                            values will have an ival of 0 */
 664                         if (v->flags & MPDM_STRING) {
 665                                 char tmp[32];
 666                                 char *fmt = "%i";
 667
 668                                 wcstombs(tmp, (wchar_t *) v->data, sizeof(tmp));
 669                                 tmp[sizeof(tmp) - 1] = '\0';
 670
 671                                 /* workaround for mingw32: as it doesn't
 672                                    correctly parse octal and hexadecimal
 673                                    numbers, they are tried as special cases */
 674                                 if (tmp[0] == '0') {
 675                                         if (tmp[1] == 'b' || tmp[1] == 'B') {
 676                                                 /* binary number */
 677                                                 fmt = NULL;
 678                                                 char *ptr = &tmp[2];
 679
 680                                                 while (*ptr == '0' || *ptr == '1') {
 681                                                         i <<= 1;
 682
 683                                                         if (*ptr == '1')
 684                                                                 i |= 1;
 685
 686                                                         ptr++;
 687                                                 }
 688                                         }
 689                                         else
 690                                         if (tmp[1] == 'x' || tmp[1] == 'X')
 691                                                 fmt = "%x";
 692                                         else
 693                                                 fmt = "%o";
 694                                 }
 695
 696                                 if (fmt != NULL)
 697                                         sscanf(tmp, fmt, &i);
 698                         }
 699
 700                         mpdm_set_ival(v, i);
 701                 }
 702
 703                 i = v->ival;
 704         }
 705
 706     mpdm_unref(v);
 707
 708         return i;
 709 }
 710
 711
 712 /**
 713  * mpdm_rval - Returns a value's data as a real number (double).
 714  * @v: the value
 715  *
 716  * Returns a value's data as a real number (double float). If the value
 717  * is a string, it's converted via sscanf and returned; non-string values
 718  * have all an rval of 0. The converted double is cached, so costly string
 719  * conversions are only done once. Values created with the MPDM_RVAL
 720  * flag set have its rval cached from the beginning.
 721  * [Strings]
 722  * [Value Management]
 723  */
 724 double mpdm_rval(mpdm_t v)
 725 {
 726         double r = 0.0;
 727
 728     mpdm_ref(v);
 729
 730         if (v != NULL) {
 731                 /* if there is no cached double, calculate it */
 732                 if (!(v->flags & MPDM_RVAL)) {
 733                         /* if it's a string, calculate it; other
 734                            values will have an rval of 0.0 */
 735                         if (v->flags & MPDM_STRING) {
 736                                 char tmp[128];
 737                                 char *prev_locale;
 738
 739                                 wcstombs(tmp, (wchar_t *) v->data, sizeof(tmp));
 740                                 tmp[sizeof(tmp) - 1] = '\0';
 741
 742                                 /* if the number starts with 0, it's
 743                                    an octal or hexadecimal number; just
 744                                    take the integer value and cast it */
 745                                 if (tmp[0] == '0' && tmp[1] != '.')
 746                                         r = (double) mpdm_ival(v);
 747                                 else {
 748                                         /* set locale to C for non locale-dependent
 749                                            floating point conversion */
 750                                         prev_locale = setlocale(LC_NUMERIC, "C");
 751
 752                                         /* read */
 753                                         sscanf(tmp, "%lf", &r);
 754
 755                                         /* set previous locale */
 756                                         setlocale(LC_NUMERIC, prev_locale);
 757                                 }
 758                         }
 759
 760                         mpdm_set_rval(v, r);
 761                 }
 762
 763                 r = v->rval;
 764         }
 765
 766     mpdm_unref(v);
 767
 768         return r;
 769 }
 770
 771
 772 /**
 773  * mpdm_gettext - Translates a string to the current language.
 774  * @str: the string
 775  *
 776  * Translates the @str string to the current language.
 777  *
 778  * This function can still be used even if there is no real gettext
 779  * support() by manually filling the __I18N__ hash.
 780  *
 781  * If the string is found in the current table, the translation is
 782  * returned; otherwise, the same @str value is returned.
 783  * [Strings]
 784  * [Localization]
 785  */
 786 mpdm_t mpdm_gettext(const mpdm_t str)
 787 {
 788         mpdm_t v;
 789         mpdm_t i18n = NULL;
 790
 791         /* gets the cache */
 792         if ((i18n = mpdm_hget_s(mpdm_root(), L"__I18N__")) == NULL)
 793                 i18n = mpdm_hset_s(mpdm_root(), L"__I18N__", MPDM_H(0));
 794
 795         mpdm_ref(str);
 796
 797         /* try first the cache */
 798         if ((v = mpdm_hget(i18n, str)) == NULL) {
 799 #ifdef CONFOPT_GETTEXT
 800                 char *s;
 801                 mpdm_t t;
 802
 803                 /* convert to mbs */
 804                 t = mpdm_ref(MPDM_2MBS(str->data));
 805
 806                 /* ask gettext for it */
 807                 s = gettext((char *) t->data);
 808
 809                 if (s != t->data)
 810                         v = MPDM_MBS(s);
 811                 else
 812                         v = str;
 813
 814                 mpdm_unref(t);
 815
 816 #else                           /* CONFOPT_GETTEXT */
 817
 818                 v = str;
 819
 820 #endif                          /* CONFOPT_GETTEXT */
 821
 822                 /* store in the cache */
 823                 mpdm_hset(i18n, str, v);
 824         }
 825
 826         mpdm_unref(str);
 827
 828         return v;
 829 }
 830
 831
 832 /**
 833  * mpdm_gettext_domain - Sets domain and data directory for translations.
 834  * @dom: the domain (application name)
 835  * @data: directory contaning the .mo files
 836  *
 837  * Sets the domain (application name) and translation data for translating
 838  * strings that will be returned by mpdm_gettext().@data must point to a
 839  * directory containing the .mo (compiled .po) files.
 840  *
 841  * If there is no gettext support, returns 0, or 1 otherwise.
 842  * [Strings]
 843  * [Localization]
 844  */
 845 int mpdm_gettext_domain(const mpdm_t dom, const mpdm_t data)
 846 {
 847         int ret = 0;
 848
 849         mpdm_ref(dom);
 850         mpdm_ref(data);
 851
 852 #ifdef CONFOPT_GETTEXT
 853
 854         mpdm_t dm;
 855         mpdm_t dt;
 856
 857         /* convert both to mbs,s */
 858         dm = mpdm_ref(MPDM_2MBS(dom->data));
 859         dt = mpdm_ref(MPDM_2MBS(data->data));
 860
 861         /* bind and set domain */
 862         bindtextdomain((char *) dm->data, (char *) dt->data);
 863         textdomain((char *) dm->data);
 864
 865         mpdm_hset_s(mpdm_root(), L"__I18N__", MPDM_H(0));
 866
 867         mpdm_unref(dt);
 868         mpdm_unref(dm);
 869
 870         ret = 1;
 871
 872 #endif                          /* CONFOPT_GETTEXT */
 873
 874 #ifdef CONFOPT_WIN32
 875
 876         mpdm_t v;
 877
 878         if ((v = mpdm_hget_s(mpdm_root(), L"ENV")) != NULL &&
 879                 mpdm_hget_s(v, L"LANG") == NULL) {
 880                 wchar_t *wptr = L"en";
 881
 882                 /* MS Windows crappy language constants... */
 883
 884                 switch((GetSystemDefaultLangID() & 0x00ff)) {
 885                 case 0x01: wptr = L"ar"; break; /* arabic */
 886                 case 0x02: wptr = L"bg"; break; /* bulgarian */
 887                 case 0x03: wptr = L"ca"; break; /* catalan */
 888                 case 0x04: wptr = L"zh"; break; /* chinese */
 889                 case 0x05: wptr = L"cz"; break; /* czech */
 890                 case 0x06: wptr = L"da"; break; /* danish */
 891                 case 0x07: wptr = L"de"; break; /* german */
 892                 case 0x08: wptr = L"el"; break; /* greek */
 893                 case 0x09: wptr = L"en"; break; /* english */
 894                 case 0x0a: wptr = L"es"; break; /* spanish */
 895                 case 0x0b: wptr = L"fi"; break; /* finnish */
 896                 case 0x0c: wptr = L"fr"; break; /* french */
 897                 case 0x0d: wptr = L"he"; break; /* hebrew */
 898                 case 0x0e: wptr = L"hu"; break; /* hungarian */
 899                 case 0x0f: wptr = L"is"; break; /* icelandic */
 900                 case 0x10: wptr = L"it"; break; /* italian */
 901                 case 0x11: wptr = L"jp"; break; /* japanese */
 902                 case 0x12: wptr = L"ko"; break; /* korean */
 903                 case 0x13: wptr = L"nl"; break; /* dutch */
 904                 case 0x14: wptr = L"no"; break; /* norwegian */
 905                 case 0x15: wptr = L"po"; break; /* polish */
 906                 case 0x16: wptr = L"pt"; break; /* portuguese */
 907                 case 0x17: wptr = L"rm"; break; /* romansh (switzerland) */
 908                 case 0x18: wptr = L"ro"; break; /* romanian */
 909                 case 0x19: wptr = L"ru"; break; /* russian */
 910                 case 0x1a: wptr = L"sr"; break; /* serbian */
 911                 case 0x1b: wptr = L"sk"; break; /* slovak */
 912                 case 0x1c: wptr = L"sq"; break; /* albanian */
 913                 case 0x1d: wptr = L"sv"; break; /* swedish */
 914                 }
 915
 916                 mpdm_hset_s(v, L"LANG", MPDM_S(wptr));
 917         }
 918
 919 #endif                          /* CONFOPT_WIN32 */
 920
 921         mpdm_unref(data);
 922         mpdm_unref(dom);
 923
 924         return ret;
 925 }
 926
 927
 928 #ifdef CONFOPT_WCWIDTH
 929
 930 int wcwidth(wchar_t);
 931
 932 int mpdm_wcwidth(wchar_t c)
 933 {
 934         return wcwidth(c);
 935 }
 936
 937 #else                           /* CONFOPT_WCWIDTH */
 938
 939 #include "wcwidth.c"
 940
 941 int mpdm_wcwidth(wchar_t c)
 942 {
 943         return mk_wcwidth(c);
 944 }
 945
 946 #endif                          /* CONFOPT_WCWIDTH */
 947
 948
 949 /**
 950  * mpdm_sprintf - Formats a sprintf()-like string.
 951  * @fmt: the string format
 952  * @args: an array of values
 953  *
 954  * Formats a string using the sprintf() format taking the values from @args.
 955  * [Strings]
 956  */
 957 mpdm_t mpdm_sprintf(const mpdm_t fmt, const mpdm_t args)
 958 {
 959         const wchar_t *i = fmt->data;
 960         wchar_t *o = NULL;
 961         int l = 0, n = 0;
 962         wchar_t c;
 963
 964         mpdm_ref(fmt);
 965         mpdm_ref(args);
 966
 967         /* loop all characters */
 968         while ((c = *i++) != L'\0') {
 969                 int m = 0;
 970                 wchar_t *tptr = NULL;
 971                 wchar_t *wptr = NULL;
 972
 973                 if (c == L'%') {
 974                         /* format directive */
 975                         char t_fmt[128];
 976                         char tmp[1024];
 977                         mpdm_t v;
 978                         char *ptr = NULL;
 979
 980                         /* transfer the % */
 981                         t_fmt[m++] = '%';
 982
 983                         /* transform the format to mbs */
 984                         while (*i != L'\0' &&
 985                                 m < (int)(sizeof(t_fmt) - MB_CUR_MAX - 1) &&
 986                                 wcschr(L"-.0123456789", *i) != NULL)
 987                                 m += wctomb(&t_fmt[m], *i++);
 988
 989                         /* transfer the directive */
 990                         m += wctomb(&t_fmt[m], *i++);
 991
 992                         t_fmt[m] = '\0';
 993
 994                         /* by default, copies the format */
 995                         strcpy(tmp, t_fmt);
 996
 997                         /* pick next value */
 998                         v = mpdm_aget(args, n++);
 999
1000                         switch (t_fmt[m - 1]) {
1001                         case 'd':
1002                         case 'i':
1003                         case 'u':
1004                         case 'x':
1005                         case 'X':
1006                         case 'o':
1007
1008                                 /* integer value */
1009                                 snprintf(tmp, sizeof(tmp) - 1,
1010                                         t_fmt, mpdm_ival(v));
1011                                 break;
1012
1013                         case 'f':
1014
1015                                 /* float (real) value */
1016                                 snprintf(tmp, sizeof(tmp) - 1,
1017                                         t_fmt, mpdm_rval(v));
1018                                 break;
1019
1020                         case 's':
1021
1022                                 /* string value */
1023                                 ptr = mpdm_wcstombs(mpdm_string(v), NULL);
1024                                 snprintf(tmp, sizeof(tmp) - 1, t_fmt, ptr);
1025                                 free(ptr);
1026
1027                                 break;
1028
1029                         case 'c':
1030
1031                                 /* char */
1032                                 m = 1;
1033                                 wptr = &c;
1034                                 c = mpdm_ival(v);
1035                                 break;
1036
1037                         case 'b':
1038
1039                                 ptr = tmp;
1040                                 unsigned int mask;
1041                                 int p = 0;
1042
1043                                 mask = 1 << ((sizeof(int) * 8) - 1);
1044                                 while (mask) {
1045                                         if (mask & (unsigned int) mpdm_ival(v)) {
1046                                                 *ptr++ = '1';
1047                                                 p = 1;
1048                                         }
1049                                         else
1050                                         if (p)
1051                                                 *ptr++ = '0';
1052
1053                                         mask >>= 1;
1054                                 }
1055
1056                                 if (ptr == tmp)
1057                                         *ptr++ = '0';
1058
1059                                 *ptr = '\0';
1060                                 break;
1061
1062                         case '%':
1063
1064                                 /* percent sign */
1065                                 m = 1;
1066                                 wptr = &c;
1067                                 break;
1068                         }
1069
1070                         /* transfer */
1071                         if (wptr == NULL)
1072                                 wptr = tptr = mpdm_mbstowcs(tmp, &m, -1);
1073                 }
1074                 else {
1075                         /* raw character */
1076                         m = 1;
1077                         wptr = &c;
1078                 }
1079
1080                 /* transfer */
1081                 o = mpdm_poke(o, &l, wptr, m, sizeof(wchar_t));
1082
1083                 /* free the temporary buffer, if any */
1084                 if (tptr != NULL)
1085                         free(tptr);
1086         }
1087
1088         if (o == NULL)
1089                 return NULL;
1090
1091         /* null-terminate */
1092         o = mpdm_poke(o, &l, L"", 1, sizeof(wchar_t));
1093
1094         mpdm_unref(args);
1095         mpdm_unref(fmt);
1096
1097         return MPDM_ENS(o, l - 1);
1098 }
1099
1100
1101 /**
1102  * mpdm_ulc - Converts a string to uppercase or lowecase.
1103  * @s: the string
1104  * @u: convert to uppercase (1) or to lowercase (0).
1105  *
1106  * Converts @s to uppercase (for @u == 1) or to lowercase (@u == 0).
1107  * [Strings]
1108  */
1109 mpdm_t mpdm_ulc(const mpdm_t s, int u)
1110 {
1111         mpdm_t r = NULL;
1112         wchar_t *optr;
1113         int i;
1114
1115         mpdm_ref(s);
1116
1117         i = mpdm_size(s);
1118
1119         if ((optr = malloc((i + 1) * sizeof(wchar_t))) != NULL) {
1120                 wchar_t *iptr = mpdm_string(s);
1121                 int n;
1122
1123                 for (n = 0; n < i; n++)
1124                         optr[n] = u ? towupper(iptr[n]) : towlower(iptr[n]);
1125
1126                 optr[n] = L'\0';
1127                 r = MPDM_ENS(optr, i);
1128         }
1129
1130         mpdm_unref(s);
1131
1132         return r;
1133 }
1134
1135
1136 /* scanf working buffers */
1137 #define SCANF_BUF_SIZE 1024
1138 static wchar_t scanf_yset[SCANF_BUF_SIZE];
1139 static wchar_t scanf_nset[SCANF_BUF_SIZE];
1140 static wchar_t scanf_mark[SCANF_BUF_SIZE];
1141
1142 struct {
1143         wchar_t cmd;
1144         wchar_t *yset;
1145         wchar_t *nset;
1146 } scanf_sets[] = {
1147         { L's',         L"",                            L" \t" },
1148         { L'u',         L"0123456789",                  L"" },
1149         { L'd',         L"-0123456789",                 L"" },
1150         { L'i',         L"-0123456789",                 L"" },
1151         { L'f',         L"-0123456789.",                L"" },
1152         { L'x',         L"-0123456789xabcdefABCDEF",    L"" },
1153         { L'\0',        NULL,                           NULL },
1154 };
1155
1156 /**
1157  * mpdm_sscanf - Extracts data like sscanf().
1158  * @fmt: the string format
1159  * @str: the string to be parsed
1160  * @offset: the character offset to start scanning
1161  *
1162  * Extracts data from a string using a special format pattern, very
1163  * much like the scanf() series of functions in the C library. Apart
1164  * from the standard percent-sign-commands (s, u, d, i, f, x,
1165  * n, [, with optional size and * to ignore), it implements S,
1166  * to match a string of characters upto what follows in the format
1167  * string. Also, the [ set of characters can include other % formats.
1168  *
1169  * Returns an array with the extracted values. If %n is used, the
1170  * position in the scanned string is returned as the value.
1171  * [Strings]
1172  */
1173 mpdm_t mpdm_sscanf(const mpdm_t fmt, const mpdm_t str, int offset)
1174 {
1175         wchar_t *i = (wchar_t *)str->data;
1176         wchar_t *f = (wchar_t *)fmt->data;
1177         mpdm_t r;
1178
1179         mpdm_ref(fmt);
1180         mpdm_ref(str);
1181
1182         i += offset;
1183         r = MPDM_A(0);
1184
1185         while (*f) {
1186                 if (*f == L'%') {
1187                         wchar_t *ptr = NULL;
1188                         int size = 0;
1189                         wchar_t cmd;
1190                         int vsize = 0;
1191                         int ignore = 0;
1192                         int msize = 0;
1193
1194                         /* empty all buffers */
1195                         scanf_yset[0] = scanf_nset[0] = scanf_mark[0] = L'\0';
1196
1197                         f++;
1198
1199                         /* an asterisk? don't return next value */
1200                         if (*f == L'*') {
1201                                 ignore = 1;
1202                                 f++;
1203                         }
1204
1205                         /* does it have a size? */
1206                         while (wcschr(L"0123456789", *f)) {
1207                                 vsize *= 10;
1208                                 vsize += *f - L'0';
1209                                 f++;
1210                         }
1211
1212                         /* if no size, set it to an arbitrary big limit */
1213                         if (!vsize)
1214                                 vsize = 0xfffffff;
1215
1216                         /* now *f should contain a command */
1217                         cmd = *f;
1218                         f++;
1219
1220                         /* is it a verbatim percent sign? */
1221                         if (cmd == L'%') {
1222                                 vsize = 1;
1223                                 ignore = 1;
1224                                 wcscpy(scanf_yset, L"%");
1225                         }
1226                         else
1227                         /* a position? */
1228                         if (cmd == L'n') {
1229                                 vsize = 0;
1230                                 ignore = 1;
1231                                 mpdm_push(r, MPDM_I(i - (wchar_t *)str->data));
1232                         }
1233                         else
1234                         /* string upto a mark */
1235                         if (cmd == L'S') {
1236                                 wchar_t *tmp = f;
1237
1238                                 /* fill the mark upto another command */
1239                                 while (*tmp) {
1240                                         if (*tmp == L'%') {
1241                                                 tmp++;
1242
1243                                                 /* is it an 'n'? ignore and go on */
1244                                                 if (*tmp == L'n') {
1245                                                         tmp++;
1246                                                         continue;
1247                                                 }
1248                                                 else
1249                                                 if (*tmp == L'%')
1250                                                         scanf_mark[msize++] = *tmp;
1251                                                 else
1252                                                         break;
1253                                         }
1254                                         else
1255                                                 scanf_mark[msize++] = *tmp;
1256
1257                                         tmp++;
1258                                 }
1259
1260                                 scanf_mark[msize] = L'\0';
1261                         }
1262                         else
1263                         /* raw set */
1264                         if (cmd == L'[') {
1265                                 int n = 0;
1266                                 wchar_t *set = scanf_yset;
1267
1268                                 /* is it an inverse set? */
1269                                 if (*f == L'^') {
1270                                         set = scanf_nset;
1271                                         f++;
1272                                 }
1273
1274                                 /* first one is a ]? add it */
1275                                 if (*f == L']') {
1276                                         set[n++] = *f;
1277                                         f++;
1278                                 }
1279
1280                                 /* now build the set */
1281                                 for (; n < SCANF_BUF_SIZE - 1 && *f && *f != L']'; f++) {
1282                                         /* is it a range? */
1283                                         if (*f == L'-') {
1284                                                 f++;
1285
1286                                                 /* start or end? hyphen itself */
1287                                                 if (n == 0 || *f == L']')
1288                                                         set[n++] = L'-';
1289                                                 else {
1290                                                         /* pick previous char */
1291                                                         wchar_t c = set[n - 1];
1292
1293                                                         /* fill */
1294                                                         while (n < SCANF_BUF_SIZE - 1 && c < *f)
1295                                                                 set[n++] = ++c;
1296                                                 }
1297                                         }
1298                                         else
1299                                         /* is it another command? */
1300                                         if (*f == L'%') {
1301                                                 int i;
1302
1303                                                 f++;
1304                                                 for (i = 0; scanf_sets[i].cmd; i++) {
1305                                                         if (*f == scanf_sets[i].cmd) {
1306                                                                 set[n] = L'\0';
1307                                                                 wcscat(set, scanf_sets[i].yset);
1308                                                                 n += wcslen(scanf_sets[i].yset);
1309                                                                 break;
1310                                                         }
1311                                                 }
1312                                         }
1313                                         else
1314                                                 set[n++] = *f;
1315                                 }
1316
1317                                 /* skip the ] */
1318                                 f++;
1319
1320                                 set[n] = L'\0';
1321                         }
1322                         else
1323                         /* a standard set? */
1324                         {
1325                                 int n;
1326
1327                                 for (n = 0; scanf_sets[n].cmd != L'\0'; n++) {
1328                                         if (cmd == scanf_sets[n].cmd) {
1329                                                 wcscpy(scanf_yset, scanf_sets[n].yset);
1330                                                 wcscpy(scanf_nset, scanf_sets[n].nset);
1331                                                 break;
1332                                         }
1333                                 }
1334                         }
1335
1336                         /* now fill the dynamic string */
1337                         while (vsize &&
1338                                !wcschr(scanf_nset, *i) &&
1339                                (scanf_yset[0] == L'\0' || wcschr(scanf_yset, *i)) &&
1340                                (msize == 0 || wcsncmp(i, scanf_mark, msize) != 0)) {
1341
1342                                 /* only add if not being ignored */
1343                                 if (!ignore)
1344                                         ptr = mpdm_poke(ptr, &size, i, 1, sizeof(wchar_t));
1345
1346                                 i++;
1347                                 vsize--;
1348                         }
1349
1350                         if (!ignore && size) {
1351                                 /* null terminate and push */
1352                                 ptr = mpdm_poke(ptr, &size, L"", 1, sizeof(wchar_t));
1353                                 mpdm_push(r, MPDM_ENS(ptr, size - 1));
1354                         }
1355                 }
1356                 else
1357                 if (*f == L' ' || *f == L'\t') {
1358                         /* if it's a blank, sync to next non-blank */
1359                         f++;
1360
1361                         while (*i == L' ' || *i == L'\t')
1362                                 i++;
1363                 }
1364                 else
1365                 /* test for literals in the format string */
1366                 if (*i == *f) {
1367                         i++;
1368                         f++;
1369                 }
1370                 else
1371                         break;
1372         }
1373
1374         mpdm_unref(str);
1375         mpdm_unref(fmt);
1376
1377         return r;
1378 }