src/common/utils.h

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifndef __UTILS_H__
  21 #define __UTILS_H__
  22
  23 #ifdef HAVE_CONFIG_H
  24 #  include "config.h"
  25 #endif
  26
  27 #include <glib.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <stdlib.h>
  31 #include <unistd.h>
  32 #include <sys/types.h>
  33 #include <time.h>
  34 #if HAVE_ALLOCA_H
  35 #  include <alloca.h>
  36 #endif
  37 #if HAVE_WCHAR_H
  38 #  include <wchar.h>
  39 #endif
  40
  41 /* The AC_CHECK_SIZEOF() in configure fails for some machines.
  42  * we provide some fallback values here */
  43 #if !SIZEOF_UNSIGNED_SHORT
  44   #undef SIZEOF_UNSIGNED_SHORT
  45   #define SIZEOF_UNSIGNED_SHORT 2
  46 #endif
  47 #if !SIZEOF_UNSIGNED_INT
  48   #undef SIZEOF_UNSIGNED_INT
  49   #define SIZEOF_UNSIGNED_INT 4
  50 #endif
  51 #if !SIZEOF_UNSIGNED_LONG
  52   #undef SIZEOF_UNSIGNED_LONG
  53   #define SIZEOF_UNSIGNED_LONG 4
  54 #endif
  55
  56 #ifndef HAVE_U32_TYPEDEF
  57   #undef u32        /* maybe there is a macro with this name */
  58   typedef guint32 u32;
  59   #define HAVE_U32_TYPEDEF
  60 #endif
  61
  62 #ifndef BIG_ENDIAN_HOST
  63   #if (G_BYTE_ORDER == G_BIG_ENDIAN)
  64     #define BIG_ENDIAN_HOST 1
  65   #endif
  66 #endif
  67
  68 #define CHDIR_RETURN_IF_FAIL(dir) \
  69 { \
  70         if (change_dir(dir) < 0) return; \
  71 }
  72
  73 #define CHDIR_RETURN_VAL_IF_FAIL(dir, val) \
  74 { \
  75         if (change_dir(dir) < 0) return val; \
  76 }
  77
  78 #define Xalloca(ptr, size, iffail) \
  79 { \
  80         if ((ptr = alloca(size)) == NULL) { \
  81                 g_warning("can't allocate memory\n"); \
  82                 iffail; \
  83         } \
  84 }
  85
  86 #define Xstrdup_a(ptr, str, iffail) \
  87 { \
  88         gchar *__tmp; \
  89  \
  90         if ((__tmp = alloca(strlen(str) + 1)) == NULL) { \
  91                 g_warning("can't allocate memory\n"); \
  92                 iffail; \
  93         } else \
  94                 strcpy(__tmp, str); \
  95  \
  96         ptr = __tmp; \
  97 }
  98
  99 #define Xstrndup_a(ptr, str, len, iffail) \
 100 { \
 101         gchar *__tmp; \
 102  \
 103         if ((__tmp = alloca(len + 1)) == NULL) { \
 104                 g_warning("can't allocate memory\n"); \
 105                 iffail; \
 106         } else { \
 107                 strncpy(__tmp, str, len); \
 108                 __tmp[len] = '\0'; \
 109         } \
 110  \
 111         ptr = __tmp; \
 112 }
 113
 114 #define Xstrcat_a(ptr, str1, str2, iffail) \
 115 { \
 116         gchar *__tmp; \
 117         gint len1, len2; \
 118  \
 119         len1 = strlen(str1); \
 120         len2 = strlen(str2); \
 121         if ((__tmp = alloca(len1 + len2 + 1)) == NULL) { \
 122                 g_warning("can't allocate memory\n"); \
 123                 iffail; \
 124         } else { \
 125                 memcpy(__tmp, str1, len1); \
 126                 memcpy(__tmp + len1, str2, len2 + 1); \
 127         } \
 128  \
 129         ptr = __tmp; \
 130 }
 131
 132 #define FILE_OP_ERROR(file, func) \
 133 { \
 134         fprintf(stderr, "%s: ", file); \
 135         perror(func); \
 136 }
 137
 138 /* debug functions */
 139 void debug_set_mode             (gboolean mode);
 140 gboolean debug_get_mode         ();
 141 #define debug_print \
 142         debug_print_real(__FILE__ ":%d:", __LINE__), \
 143         debug_print_real
 144
 145 /* for macro expansion */
 146 #define Str(x)  #x
 147 #define Xstr(x) Str(x)
 148
 149 void list_free_strings          (GList          *list);
 150 void slist_free_strings         (GSList         *list);
 151
 152 void hash_free_strings          (GHashTable     *table);
 153 void hash_free_value_mem        (GHashTable     *table);
 154
 155 void ptr_array_free_strings     (GPtrArray      *array);
 156
 157 /* number-string conversion */
 158 gint to_number                  (const gchar *nstr);
 159 gchar *itos_buf                 (gchar       *nstr,
 160                                  gint         n);
 161 gchar *itos                     (gint         n);
 162 gchar *to_human_readable        (off_t        size);
 163
 164 /* alternative string functions */
 165 gint strcmp2            (const gchar    *s1,
 166                          const gchar    *s2);
 167 gchar *strstr2          (const gchar    *s1,
 168                          const gchar    *s2);
 169 gint path_cmp           (const gchar    *s1,
 170                          const gchar    *s2);
 171 gchar *strretchomp      (gchar          *str);
 172 gchar *strtailchomp     (gchar          *str,
 173                          gchar           tail_char);
 174 gchar *strcrchomp       (gchar          *str);
 175 gchar *strcasestr       (const gchar    *haystack,
 176                          const gchar    *needle);
 177 gchar *strncpy2         (gchar          *dest,
 178                          const gchar    *src,
 179                          size_t          n);
 180
 181 /* wide-character functions */
 182 #if !HAVE_ISWALNUM
 183 int iswalnum            (wint_t wc);
 184 #endif
 185 #if !HAVE_ISWSPACE
 186 int iswspace            (wint_t wc);
 187 #endif
 188 #if !HAVE_TOWLOWER
 189 wint_t towlower         (wint_t wc);
 190 #endif
 191
 192 #if !HAVE_WCSLEN
 193 size_t wcslen           (const wchar_t *s);
 194 #endif
 195 #if !HAVE_WCSCPY
 196 wchar_t *wcscpy         (wchar_t       *dest,
 197                          const wchar_t *src);
 198 #endif
 199 #if !HAVE_WCSNCPY
 200 wchar_t *wcsncpy        (wchar_t       *dest,
 201                          const wchar_t *src,
 202                          size_t         n);
 203 #endif
 204
 205 wchar_t *wcsdup                 (const wchar_t *s);
 206 wchar_t *wcsndup                (const wchar_t *s,
 207                                  size_t         n);
 208 wchar_t *strdup_mbstowcs        (const gchar   *s);
 209 gchar *strdup_wcstombs          (const wchar_t *s);
 210 gint wcsncasecmp                (const wchar_t *s1,
 211                                  const wchar_t *s2,
 212                                  size_t         n);
 213 wchar_t *wcscasestr             (const wchar_t *haystack,
 214                                  const wchar_t *needle);
 215
 216 gboolean is_next_nonascii       (const guchar *s);
 217 gint get_next_word_len          (const gchar *s);
 218
 219 /* functions for string parsing */
 220 gint subject_compare                    (const gchar    *s1,
 221                                          const gchar    *s2);
 222 void trim_subject                       (gchar          *str);
 223 void eliminate_parenthesis              (gchar          *str,
 224                                          gchar           op,
 225                                          gchar           cl);
 226 void extract_parenthesis                (gchar          *str,
 227                                          gchar           op,
 228                                          gchar           cl);
 229
 230 void extract_one_parenthesis_with_skip_quote    (gchar          *str,
 231                                                  gchar           quote_chr,
 232                                                  gchar           op,
 233                                                  gchar           cl);
 234 void extract_parenthesis_with_skip_quote        (gchar          *str,
 235                                                  gchar           quote_chr,
 236                                                  gchar           op,
 237                                                  gchar           cl);
 238
 239 void eliminate_quote                    (gchar          *str,
 240                                          gchar           quote_chr);
 241 void extract_quote                      (gchar          *str,
 242                                          gchar           quote_chr);
 243 void eliminate_address_comment          (gchar          *str);
 244 gchar *strchr_with_skip_quote           (const gchar    *str,
 245                                          gint            quote_chr,
 246                                          gint            c);
 247 gchar *strrchr_with_skip_quote          (const gchar    *str,
 248                                          gint            quote_chr,
 249                                          gint            c);
 250 void extract_address                    (gchar          *str);
 251
 252 GSList *slist_concat_unique             (GSList         *first,
 253                                          GSList         *second);
 254 GSList *address_list_append             (GSList         *addr_list,
 255                                          const gchar    *str);
 256 GSList *address_list_append_with_comments(GSList        *addr_list,
 257                                          const gchar    *str);
 258 GSList *references_list_append          (GSList         *msgid_list,
 259                                          const gchar    *str);
 260 GSList *newsgroup_list_append           (GSList         *group_list,
 261                                          const gchar    *str);
 262
 263 GList *add_history                      (GList          *list,
 264                                          const gchar    *str);
 265
 266 void remove_return                      (gchar          *str);
 267 void remove_space                       (gchar          *str);
 268 void unfold_line                        (gchar          *str);
 269 void subst_char                         (gchar          *str,
 270                                          gchar           orig,
 271                                          gchar           subst);
 272 void subst_chars                        (gchar          *str,
 273                                          gchar          *orig,
 274                                          gchar           subst);
 275 void subst_for_filename                 (gchar          *str);
 276 gboolean is_header_line                 (const gchar    *str);
 277 gboolean is_ascii_str                   (const guchar   *str);
 278 gint get_quote_level                    (const gchar    *str,
 279                                          const gchar    *quote_chars);
 280 gchar *strstr_with_skip_quote           (const gchar    *haystack,
 281                                          const gchar    *needle);
 282 gchar *strchr_parenthesis_close         (const gchar    *str,
 283                                          gchar           op,
 284                                          gchar           cl);
 285
 286 gchar **strsplit_parenthesis            (const gchar    *str,
 287                                          gchar           op,
 288                                          gchar           cl,
 289                                          gint            max_tokens);
 290 gchar **strsplit_with_quote             (const gchar    *str,
 291                                          const gchar    *delim,
 292                                          gint            max_tokens);
 293
 294 gchar *get_abbrev_newsgroup_name        (const gchar    *group,
 295                                          gint            len);
 296 gchar *trim_string                      (const gchar    *str,
 297                                          gint            len);
 298
 299 GList *uri_list_extract_filenames       (const gchar    *uri_list);
 300 void decode_uri                         (gchar          *decoded_uri,
 301                                          const gchar    *encoded_uri);
 302 gint scan_mailto_url                    (const gchar    *mailto,
 303                                          gchar         **to,
 304                                          gchar         **cc,
 305                                          gchar         **bcc,
 306                                          gchar         **subject,
 307                                          gchar         **body);
 308
 309 /* return static strings */
 310 gchar *get_home_dir             (void);
 311 gchar *get_rc_dir               (void);
 312 gchar *get_news_cache_dir       (void);
 313 gchar *get_imap_cache_dir       (void);
 314 gchar *get_mbox_cache_dir       (void);
 315 gchar *get_mime_tmp_dir         (void);
 316 gchar *get_template_dir         (void);
 317 gchar *get_header_cache_dir     (void);
 318 gchar *get_tmp_dir              (void);
 319 gchar *get_tmp_file             (void);
 320 gchar *get_domain_name          (void);
 321
 322 /* file / directory handling */
 323 off_t get_file_size             (const gchar    *file);
 324 off_t get_file_size_as_crlf     (const gchar    *file);
 325 off_t get_left_file_size        (FILE           *fp);
 326
 327 gboolean file_exist             (const gchar    *file,
 328                                  gboolean        allow_fifo);
 329 gboolean is_dir_exist           (const gchar    *dir);
 330 gboolean is_file_entry_exist    (const gchar    *file);
 331
 332 #define is_file_exist(file)             file_exist(file, FALSE)
 333 #define is_file_or_fifo_exist(file)     file_exist(file, TRUE)
 334
 335 gint change_dir                 (const gchar    *dir);
 336 gint make_dir                   (const gchar    *dir);
 337 gint make_dir_hier              (const gchar    *dir);
 338 gint remove_all_files           (const gchar    *dir);
 339 gint remove_numbered_files      (const gchar    *dir,
 340                                  guint           first,
 341                                  guint           last);
 342 gint remove_numbered_files_not_in_list(const gchar *dir,
 343                                        GSList *numberlist);
 344 gint remove_all_numbered_files  (const gchar    *dir);
 345 gint remove_expired_files       (const gchar    *dir,
 346                                  guint           hours);
 347 gint remove_dir_recursive       (const gchar    *dir);
 348 gint append_file                (const gchar    *src,
 349                                  const gchar    *dest,
 350                                  gboolean        keep_backup);
 351 gint copy_file                  (const gchar    *src,
 352                                  const gchar    *dest,
 353                                  gboolean        keep_backup);
 354 gint move_file                  (const gchar    *src,
 355                                  const gchar    *dest,
 356                                  gboolean        overwrite);
 357 gint copy_file_part             (FILE           *fp,
 358                                  off_t           offset,
 359                                  size_t          length,
 360                                  const gchar    *dest);
 361
 362 gchar *canonicalize_str         (const gchar    *str);
 363 gint canonicalize_file          (const gchar    *src,
 364                                  const gchar    *dest);
 365 gint canonicalize_file_replace  (const gchar    *file);
 366 gint uncanonicalize_file        (const gchar    *src,
 367                                  const gchar    *dest);
 368 gint uncanonicalize_file_replace(const gchar    *file);
 369
 370 gint change_file_mode_rw        (FILE           *fp,
 371                                  const gchar    *file);
 372 FILE *my_tmpfile                (void);
 373 FILE *str_open_as_stream        (const gchar    *str);
 374 gint str_write_to_file          (const gchar    *str,
 375                                  const gchar    *file);
 376 gchar *file_read_to_str         (const gchar    *file);
 377
 378 /* process execution */
 379 gint execute_async              (gchar *const    argv[]);
 380 gint execute_sync               (gchar *const    argv[]);
 381 gint execute_command_line       (const gchar    *cmdline,
 382                                  gboolean        async);
 383
 384 /* open URI with external browser */
 385 gint open_uri(const gchar *uri, const gchar *cmdline);
 386
 387 /* time functions */
 388 time_t remote_tzoffset_sec      (const gchar    *zone);
 389 time_t tzoffset_sec             (time_t         *now);
 390 gchar *tzoffset                 (time_t         *now);
 391 void get_rfc822_date            (gchar          *buf,
 392                                  gint            len);
 393
 394 /* debugging */
 395 void debug_print_real   (const gchar *format, ...) G_GNUC_PRINTF(1, 2);
 396
 397 /* subject threading */
 398 void * subject_table_lookup(GHashTable *subject_table, gchar * subject);
 399 void subject_table_insert(GHashTable *subject_table, gchar * subject,
 400                           void * data);
 401 void subject_table_remove(GHashTable *subject_table, gchar * subject);
 402 gboolean subject_is_reply(const gchar *subject);
 403
 404 /* quoting recognition */
 405 const gchar * line_has_quote_char       (const gchar *str,
 406                                          const gchar *quote_chars);
 407 const gchar * line_has_quote_char_last  (const gchar *str,
 408                                          const gchar *quote_chars);
 409
 410 /* used in extended search */
 411 gchar * expand_search_string    (const gchar *str);
 412
 413 guint g_stricase_hash   (gconstpointer gptr);
 414 gint g_stricase_equal   (gconstpointer gptr1, gconstpointer gptr2);
 415
 416 #endif /* __UTILS_H__ */