cups/langprintf.c

   1 /*
   2  * Localized printf/puts functions for CUPS.
   3  *
   4  * Copyright 2007-2014 by Apple Inc.
   5  * Copyright 2002-2007 by Easy Software Products.
   6  *
   7  * These coded instructions, statements, and computer programs are the
   8  * property of Apple Inc. and are protected by Federal copyright
   9  * law.  Distribution and use rights are outlined in the file "LICENSE.txt"
  10  * which should have been included with this file.  If this file is
  11  * file is missing or damaged, see the license at "http://www.cups.org/".
  12  *
  13  * This file is subject to the Apple OS-Developed Software exception.
  14  */
  15
  16 /*
  17  * Include necessary headers...
  18  */
  19
  20 #include "cups-private.h"
  21
  22
  23 /*
  24  * '_cupsLangPrintError()' - Print a message followed by a standard error.
  25  */
  26
  27 void
  28 _cupsLangPrintError(const char *prefix, /* I - Non-localized message prefix */
  29                     const char *message)/* I - Message */
  30 {
  31   ssize_t       bytes;                  /* Number of bytes formatted */
  32   int           last_errno;             /* Last error */
  33   char          buffer[2048],           /* Message buffer */
  34                 *bufptr,                /* Pointer into buffer */
  35                 output[8192];           /* Output buffer */
  36   _cups_globals_t *cg;                  /* Global data */
  37
  38
  39  /*
  40   * Range check...
  41   */
  42
  43   if (!message)
  44     return;
  45
  46  /*
  47   * Save the errno value...
  48   */
  49
  50   last_errno = errno;
  51
  52  /*
  53   * Get the message catalog...
  54   */
  55
  56   cg = _cupsGlobals();
  57
  58   if (!cg->lang_default)
  59     cg->lang_default = cupsLangDefault();
  60
  61  /*
  62   * Format the message...
  63   */
  64
  65   if (prefix)
  66   {
  67     snprintf(buffer, sizeof(buffer), "%s:", prefix);
  68     bufptr = buffer + strlen(buffer);
  69   }
  70   else
  71     bufptr = buffer;
  72
  73   snprintf(bufptr, sizeof(buffer) - (size_t)(bufptr - buffer),
  74            /* TRANSLATORS: Message is "subject: error" */
  75            _cupsLangString(cg->lang_default, _("%s: %s")),
  76            _cupsLangString(cg->lang_default, message), strerror(last_errno));
  77   strlcat(buffer, "\n", sizeof(buffer));
  78
  79  /*
  80   * Convert and write to stderr...
  81   */
  82
  83   bytes = cupsUTF8ToCharset(output, (cups_utf8_t *)buffer, sizeof(output),
  84                             cg->lang_default->encoding);
  85
  86   if (bytes > 0)
  87     fwrite(output, 1, (size_t)bytes, stderr);
  88 }
  89
  90
  91 /*
  92  * '_cupsLangPrintFilter()' - Print a formatted filter message string to a file.
  93  */
  94
  95 int                                     /* O - Number of bytes written */
  96 _cupsLangPrintFilter(
  97     FILE       *fp,                     /* I - File to write to */
  98     const char *prefix,                 /* I - Non-localized message prefix */
  99     const char *message,                /* I - Message string to use */
 100     ...)                                /* I - Additional arguments as needed */
 101 {
 102   ssize_t       bytes;                  /* Number of bytes formatted */
 103   char          temp[2048],             /* Temporary format buffer */
 104                 buffer[2048],           /* Message buffer */
 105                 output[8192];           /* Output buffer */
 106   va_list       ap;                     /* Pointer to additional arguments */
 107   _cups_globals_t *cg;                  /* Global data */
 108
 109
 110  /*
 111   * Range check...
 112   */
 113
 114   if (!fp || !message)
 115     return (-1);
 116
 117   cg = _cupsGlobals();
 118
 119   if (!cg->lang_default)
 120     cg->lang_default = cupsLangDefault();
 121
 122  /*
 123   * Format the string...
 124   */
 125
 126   va_start(ap, message);
 127   snprintf(temp, sizeof(temp), "%s: %s\n", prefix,
 128            _cupsLangString(cg->lang_default, message));
 129   vsnprintf(buffer, sizeof(buffer), temp, ap);
 130   va_end(ap);
 131
 132  /*
 133   * Transcode to the destination charset...
 134   */
 135
 136   bytes = cupsUTF8ToCharset(output, (cups_utf8_t *)buffer, sizeof(output),
 137                             cg->lang_default->encoding);
 138
 139  /*
 140   * Write the string and return the number of bytes written...
 141   */
 142
 143   if (bytes > 0)
 144     return ((int)fwrite(output, 1, (size_t)bytes, fp));
 145   else
 146     return ((int)bytes);
 147 }
 148
 149
 150 /*
 151  * '_cupsLangPrintf()' - Print a formatted message string to a file.
 152  */
 153
 154 int                                     /* O - Number of bytes written */
 155 _cupsLangPrintf(FILE       *fp,         /* I - File to write to */
 156                 const char *message,    /* I - Message string to use */
 157                 ...)                    /* I - Additional arguments as needed */
 158 {
 159   ssize_t       bytes;                  /* Number of bytes formatted */
 160   char          buffer[2048],           /* Message buffer */
 161                 output[8192];           /* Output buffer */
 162   va_list       ap;                     /* Pointer to additional arguments */
 163   _cups_globals_t *cg;                  /* Global data */
 164
 165
 166  /*
 167   * Range check...
 168   */
 169
 170   if (!fp || !message)
 171     return (-1);
 172
 173   cg = _cupsGlobals();
 174
 175   if (!cg->lang_default)
 176     cg->lang_default = cupsLangDefault();
 177
 178  /*
 179   * Format the string...
 180   */
 181
 182   va_start(ap, message);
 183   vsnprintf(buffer, sizeof(buffer) - 1,
 184             _cupsLangString(cg->lang_default, message), ap);
 185   va_end(ap);
 186
 187   strlcat(buffer, "\n", sizeof(buffer));
 188
 189  /*
 190   * Transcode to the destination charset...
 191   */
 192
 193   bytes = cupsUTF8ToCharset(output, (cups_utf8_t *)buffer, sizeof(output),
 194                             cg->lang_default->encoding);
 195
 196  /*
 197   * Write the string and return the number of bytes written...
 198   */
 199
 200   if (bytes > 0)
 201     return ((int)fwrite(output, 1, (size_t)bytes, fp));
 202   else
 203     return ((int)bytes);
 204 }
 205
 206
 207 /*
 208  * '_cupsLangPuts()' - Print a static message string to a file.
 209  */
 210
 211 int                                     /* O - Number of bytes written */
 212 _cupsLangPuts(FILE       *fp,           /* I - File to write to */
 213               const char *message)      /* I - Message string to use */
 214 {
 215   ssize_t       bytes;                  /* Number of bytes formatted */
 216   char          output[8192];           /* Message buffer */
 217   _cups_globals_t *cg;                  /* Global data */
 218
 219
 220  /*
 221   * Range check...
 222   */
 223
 224   if (!fp || !message)
 225     return (-1);
 226
 227   cg = _cupsGlobals();
 228
 229   if (!cg->lang_default)
 230     cg->lang_default = cupsLangDefault();
 231
 232  /*
 233   * Transcode to the destination charset...
 234   */
 235
 236   bytes = cupsUTF8ToCharset(output,
 237                             (cups_utf8_t *)_cupsLangString(cg->lang_default,
 238                                                            message),
 239                             sizeof(output) - 4, cg->lang_default->encoding);
 240   bytes += cupsUTF8ToCharset(output + bytes, (cups_utf8_t *)"\n", (int)(sizeof(output) - (size_t)bytes), cg->lang_default->encoding);
 241
 242  /*
 243   * Write the string and return the number of bytes written...
 244   */
 245
 246   if (bytes > 0)
 247     return ((int)fwrite(output, 1, (size_t)bytes, fp));
 248   else
 249     return ((int)bytes);
 250 }
 251
 252
 253 /*
 254  * '_cupsSetLocale()' - Set the current locale and transcode the command-line.
 255  */
 256
 257 void
 258 _cupsSetLocale(char *argv[])            /* IO - Command-line arguments */
 259 {
 260   int           i;                      /* Looping var */
 261   char          buffer[8192];           /* Command-line argument buffer */
 262   _cups_globals_t *cg;                  /* Global data */
 263 #ifdef LC_TIME
 264   const char    *lc_time;               /* Current LC_TIME value */
 265   char          new_lc_time[255],       /* New LC_TIME value */
 266                 *charset;               /* Pointer to character set */
 267 #endif /* LC_TIME */
 268
 269
 270  /*
 271   * Set the locale so that times, etc. are displayed properly.
 272   *
 273   * Unfortunately, while we need the localized time value, we *don't*
 274   * want to use the localized charset for the time value, so we need
 275   * to set LC_TIME to the locale name with .UTF-8 on the end (if
 276   * the locale includes a character set specifier...)
 277   */
 278
 279   setlocale(LC_ALL, "");
 280
 281 #ifdef LC_TIME
 282   if ((lc_time = setlocale(LC_TIME, NULL)) == NULL)
 283     lc_time = setlocale(LC_ALL, NULL);
 284
 285   if (lc_time)
 286   {
 287     strlcpy(new_lc_time, lc_time, sizeof(new_lc_time));
 288     if ((charset = strchr(new_lc_time, '.')) == NULL)
 289       charset = new_lc_time + strlen(new_lc_time);
 290
 291     strlcpy(charset, ".UTF-8", sizeof(new_lc_time) - (size_t)(charset - new_lc_time));
 292   }
 293   else
 294     strlcpy(new_lc_time, "C", sizeof(new_lc_time));
 295
 296   setlocale(LC_TIME, new_lc_time);
 297 #endif /* LC_TIME */
 298
 299  /*
 300   * Initialize the default language info...
 301   */
 302
 303   cg = _cupsGlobals();
 304
 305   if (!cg->lang_default)
 306     cg->lang_default = cupsLangDefault();
 307
 308  /*
 309   * Transcode the command-line arguments from the locale charset to
 310   * UTF-8...
 311   */
 312
 313   if (cg->lang_default->encoding != CUPS_US_ASCII &&
 314       cg->lang_default->encoding != CUPS_UTF8)
 315   {
 316     for (i = 1; argv[i]; i ++)
 317     {
 318      /*
 319       * Try converting from the locale charset to UTF-8...
 320       */
 321
 322       if (cupsCharsetToUTF8((cups_utf8_t *)buffer, argv[i], sizeof(buffer),
 323                             cg->lang_default->encoding) < 0)
 324         continue;
 325
 326      /*
 327       * Save the new string if it differs from the original...
 328       */
 329
 330       if (strcmp(buffer, argv[i]))
 331         argv[i] = strdup(buffer);
 332     }
 333   }
 334 }