1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* dbus-string.c String utility class (internal to D-BUS implementation)
4 * Copyright (C) 2002 Red Hat, Inc.
6 * Licensed under the Academic Free License version 1.2
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
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.
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
24 #include "dbus-internals.h"
25 #include "dbus-string.h"
26 /* we allow a system header here, for speed/convenience */
30 * @defgroup DBusString string class
31 * @ingroup DBusInternals
32 * @brief DBusString data structure
34 * Types and functions related to DBusString. DBusString is intended
35 * to be a string class that makes it hard to mess up security issues
36 * (and just in general harder to write buggy code). It should be
37 * used (or extended and then used) rather than the libc stuff in
38 * string.h. The string class is a bit inconvenient at spots because
39 * it handles out-of-memory failures and tries to be extra-robust.
41 * A DBusString has a maximum length set at initialization time; this
42 * can be used to ensure that a buffer doesn't get too big. The
43 * _dbus_string_lengthen() method checks for overflow, and for max
44 * length being exceeded.
46 * Try to avoid conversion to a plain C string, i.e. add methods on
47 * the string object instead, only convert to C string when passing
48 * things out to the public API. In particular, no sprintf, strcpy,
49 * strcat, any of that should be used. The GString feature of
50 * accepting negative numbers for "length of string" is also absent,
51 * because it could keep us from detecting bogus huge lengths. i.e. if
52 * we passed in some bogus huge length it would be taken to mean
53 * "current length of string" instead of "broken crack"
57 * @defgroup DBusStringInternals DBusString implementation details
58 * @ingroup DBusInternals
59 * @brief DBusString implementation details
61 * The guts of DBusString.
67 * @brief Internals of DBusString.
69 * DBusString internals. DBusString is an opaque objects, it must be
70 * used via accessor functions.
74 unsigned char *str; /**< String data, plus nul termination */
75 int len; /**< Length without nul */
76 int allocated; /**< Allocated size of data */
77 int max_length; /**< Max length of this string. */
78 unsigned int constant : 1; /**< String data is not owned by DBusString */
79 unsigned int locked : 1; /**< DBusString has been locked and can't be changed */
80 unsigned int invalid : 1; /**< DBusString is invalid (e.g. already freed) */
84 * Checks a bunch of assertions about a string object
86 * @param real the DBusRealString
88 #define DBUS_GENERIC_STRING_PREAMBLE(real) _dbus_assert ((real) != NULL); _dbus_assert (!(real)->invalid); _dbus_assert ((real)->len >= 0); _dbus_assert ((real)->allocated >= 0); _dbus_assert ((real)->max_length >= 0); _dbus_assert ((real)->len <= (real)->allocated); _dbus_assert ((real)->len <= (real)->max_length)
91 * Checks assertions about a string object that needs to be
92 * modifiable - may not be locked or const. Also declares
93 * the "real" variable pointing to DBusRealString.
94 * @param str the string
96 #define DBUS_STRING_PREAMBLE(str) DBusRealString *real = (DBusRealString*) str; \
97 DBUS_GENERIC_STRING_PREAMBLE (real); \
98 _dbus_assert (!(real)->constant); \
99 _dbus_assert (!(real)->locked)
102 * Checks assertions about a string object that may be locked but
103 * can't be const. i.e. a string object that we can free. Also
104 * declares the "real" variable pointing to DBusRealString.
106 * @param str the string
108 #define DBUS_LOCKED_STRING_PREAMBLE(str) DBusRealString *real = (DBusRealString*) str; \
109 DBUS_GENERIC_STRING_PREAMBLE (real); \
110 _dbus_assert (!(real)->constant)
113 * Checks assertions about a string that may be const or locked. Also
114 * declares the "real" variable pointing to DBusRealString.
115 * @param str the string.
117 #define DBUS_CONST_STRING_PREAMBLE(str) const DBusRealString *real = (DBusRealString*) str; \
118 DBUS_GENERIC_STRING_PREAMBLE (real)
123 * @addtogroup DBusString
127 /** Assert that the string's memory is 8-byte aligned.
129 * @todo Currently we just hope libc returns 8-byte aligned memory
130 * (which is true for GNU libc), but really we need to ensure it by
131 * allocating 8 extra bytes and keeping an "align_offset : 3" field
132 * in DBusString, or something along those lines.
134 #define ASSERT_8_BYTE_ALIGNED(s) \
135 _dbus_assert (_DBUS_ALIGN_ADDRESS (((const DBusRealString*)s)->str, 8) == ((const DBusRealString*)s)->str)
138 * Initializes a string. The maximum length may be _DBUS_INT_MAX for
139 * no maximum. The string starts life with zero length.
140 * The string must eventually be freed with _dbus_string_free().
142 * @todo the max length feature is useless, because it looks
143 * to the app like out of memory, and the app might try
144 * to "recover" - but recovery in this case is impossible,
145 * as we can't ever "get more memory" - so should delete the
146 * max length feature I think.
148 * @todo we could make this init routine not alloc any memory and
149 * return void, would simplify a lot of code, however it might
150 * complexify things elsewhere because _dbus_string_get_data()
151 * etc. could suddenly fail as they'd need to alloc new memory.
153 * @param str memory to hold the string
154 * @param max_length the maximum size of the string
155 * @returns #TRUE on success
158 _dbus_string_init (DBusString *str,
161 DBusRealString *real;
163 _dbus_assert (str != NULL);
164 _dbus_assert (max_length >= 0);
166 _dbus_assert (sizeof (DBusString) == sizeof (DBusRealString));
168 real = (DBusRealString*) str;
170 /* It's very important not to touch anything
171 * other than real->str if we're going to fail,
172 * since we also use this function to reset
173 * an existing string, e.g. in _dbus_string_steal_data()
176 #define INITIAL_ALLOC 2
178 real->str = dbus_malloc (INITIAL_ALLOC);
179 if (real->str == NULL)
182 real->allocated = INITIAL_ALLOC;
184 real->str[real->len] = '\0';
186 real->max_length = max_length;
187 real->constant = FALSE;
188 real->locked = FALSE;
189 real->invalid = FALSE;
191 ASSERT_8_BYTE_ALIGNED (str);
197 * Initializes a constant string. The value parameter is not copied
198 * (should be static), and the string may never be modified.
199 * It is safe but not necessary to call _dbus_string_free()
202 * @param str memory to use for the string
203 * @param value a string to be stored in str (not copied!!!)
206 _dbus_string_init_const (DBusString *str,
209 _dbus_string_init_const_len (str, value,
214 * Initializes a constant string with a length. The value parameter is
215 * not copied (should be static), and the string may never be
216 * modified. It is safe but not necessary to call _dbus_string_free()
219 * @param str memory to use for the string
220 * @param value a string to be stored in str (not copied!!!)
221 * @param len the length to use
224 _dbus_string_init_const_len (DBusString *str,
228 DBusRealString *real;
230 _dbus_assert (str != NULL);
231 _dbus_assert (value != NULL);
233 real = (DBusRealString*) str;
235 real->str = (char*) value;
237 real->allocated = real->len;
238 real->max_length = real->len;
239 real->constant = TRUE;
240 real->invalid = FALSE;
242 /* We don't require const strings to be 8-byte aligned as the
243 * memory is coming from elsewhere.
248 * Frees a string created by _dbus_string_init().
250 * @param str memory where the string is stored.
253 _dbus_string_free (DBusString *str)
255 DBusRealString *real = (DBusRealString*) str;
256 DBUS_GENERIC_STRING_PREAMBLE (real);
260 dbus_free (real->str);
262 real->invalid = TRUE;
266 * Locks a string such that any attempts to change the string
267 * will result in aborting the program. Also, if the string
268 * is wasting a lot of memory (allocation is larger than what
269 * the string is really using), _dbus_string_lock() will realloc
270 * the string's data to "compact" it.
272 * @param str the string to lock.
275 _dbus_string_lock (DBusString *str)
277 DBUS_LOCKED_STRING_PREAMBLE (str); /* can lock multiple times */
281 /* Try to realloc to avoid excess memory usage, since
282 * we know we won't change the string further
285 if (real->allocated > (real->len + MAX_WASTE))
290 new_allocated = real->len + 1;
292 new_str = dbus_realloc (real->str, new_allocated);
296 real->allocated = new_allocated;
297 ASSERT_8_BYTE_ALIGNED (str);
303 * Gets the raw character buffer from the string. The returned buffer
304 * will be nul-terminated, but note that strings may contain binary
305 * data so there may be extra nul characters prior to the termination.
306 * This function should be little-used, extend DBusString or add
307 * stuff to dbus-sysdeps.c instead. It's an error to use this
308 * function on a const string.
310 * @param str the string
311 * @param data_return place to store the returned data
314 _dbus_string_get_data (DBusString *str,
317 DBUS_STRING_PREAMBLE (str);
318 _dbus_assert (data_return != NULL);
320 *data_return = real->str;
324 * Gets the raw character buffer from a const string.
326 * @param str the string
327 * @param data_return location to store returned data
330 _dbus_string_get_const_data (const DBusString *str,
331 const char **data_return)
333 DBUS_CONST_STRING_PREAMBLE (str);
334 _dbus_assert (data_return != NULL);
336 *data_return = real->str;
340 * Gets a sub-portion of the raw character buffer from the
341 * string. The "len" field is required simply for error
342 * checking, to be sure you don't try to use more
343 * string than exists. The nul termination of the
344 * returned buffer remains at the end of the entire
345 * string, not at start + len.
347 * @param str the string
348 * @param data_return location to return the buffer
349 * @param start byte offset to return
350 * @param len length of segment to return
353 _dbus_string_get_data_len (DBusString *str,
358 DBUS_STRING_PREAMBLE (str);
359 _dbus_assert (data_return != NULL);
360 _dbus_assert (start >= 0);
361 _dbus_assert (len >= 0);
362 _dbus_assert ((start + len) <= real->len);
364 *data_return = real->str + start;
368 * const version of _dbus_string_get_data_len().
370 * @param str the string
371 * @param data_return location to return the buffer
372 * @param start byte offset to return
373 * @param len length of segment to return
376 _dbus_string_get_const_data_len (const DBusString *str,
377 const char **data_return,
381 DBUS_CONST_STRING_PREAMBLE (str);
382 _dbus_assert (data_return != NULL);
383 _dbus_assert (start >= 0);
384 _dbus_assert (len >= 0);
385 _dbus_assert ((start + len) <= real->len);
387 *data_return = real->str + start;
391 * Gets the byte at the given position.
393 * @param str the string
394 * @param start the position
395 * @returns the byte at that position
398 _dbus_string_get_byte (const DBusString *str,
401 DBUS_CONST_STRING_PREAMBLE (str);
402 _dbus_assert (start < real->len);
404 return real->str[start];
408 * Like _dbus_string_get_data(), but removes the
409 * gotten data from the original string. The caller
410 * must free the data returned. This function may
411 * fail due to lack of memory, and return #FALSE.
413 * @param str the string
414 * @param data_return location to return the buffer
415 * @returns #TRUE on success
418 _dbus_string_steal_data (DBusString *str,
421 DBUS_STRING_PREAMBLE (str);
422 _dbus_assert (data_return != NULL);
424 *data_return = real->str;
426 /* reset the string */
427 if (!_dbus_string_init (str, real->max_length))
429 /* hrm, put it back then */
430 real->str = *data_return;
439 * Like _dbus_string_get_data_len(), but removes the gotten data from
440 * the original string. The caller must free the data returned. This
441 * function may fail due to lack of memory, and return #FALSE.
442 * The returned string is nul-terminated and has length len.
444 * @param str the string
445 * @param data_return location to return the buffer
446 * @param start the start of segment to steal
447 * @param len the length of segment to steal
448 * @returns #TRUE on success
451 _dbus_string_steal_data_len (DBusString *str,
458 DBUS_STRING_PREAMBLE (str);
459 _dbus_assert (data_return != NULL);
460 _dbus_assert (start >= 0);
461 _dbus_assert (len >= 0);
462 _dbus_assert ((start + len) <= real->len);
464 if (!_dbus_string_init (&dest, real->max_length))
467 if (!_dbus_string_move_len (str, start, len, &dest, 0))
469 _dbus_string_free (&dest);
473 if (!_dbus_string_steal_data (&dest, data_return))
475 _dbus_string_free (&dest);
479 _dbus_string_free (&dest);
484 * Gets the length of a string (not including nul termination).
486 * @returns the length.
489 _dbus_string_get_length (const DBusString *str)
491 DBUS_CONST_STRING_PREAMBLE (str);
497 set_length (DBusRealString *real,
500 /* Note, we are setting the length without nul termination */
502 /* exceeding max length is the same as failure to allocate memory */
503 if (new_length > real->max_length)
506 while (new_length >= real->allocated)
511 new_allocated = 2 + real->allocated * 2;
512 if (new_allocated < real->allocated)
513 return FALSE; /* overflow */
515 new_str = dbus_realloc (real->str, new_allocated);
520 real->allocated = new_allocated;
522 ASSERT_8_BYTE_ALIGNED (real);
525 real->len = new_length;
526 real->str[real->len] = '\0';
532 * Makes a string longer by the given number of bytes. Checks whether
533 * adding additional_length to the current length would overflow an
534 * integer, and checks for exceeding a string's max length.
535 * The new bytes are not initialized, other than nul-terminating
536 * the end of the string. The uninitialized bytes may contain
537 * unexpected nul bytes or other junk.
539 * @param str a string
540 * @param additional_length length to add to the string.
541 * @returns #TRUE on success.
544 _dbus_string_lengthen (DBusString *str,
545 int additional_length)
547 DBUS_STRING_PREAMBLE (str);
548 _dbus_assert (additional_length >= 0);
550 if ((real->len + additional_length) < real->len)
551 return FALSE; /* overflow */
553 return set_length (real,
554 real->len + additional_length);
558 * Makes a string shorter by the given number of bytes.
560 * @param str a string
561 * @param length_to_remove length to remove from the string.
564 _dbus_string_shorten (DBusString *str,
565 int length_to_remove)
567 DBUS_STRING_PREAMBLE (str);
568 _dbus_assert (length_to_remove >= 0);
569 _dbus_assert (length_to_remove <= real->len);
572 real->len - length_to_remove);
576 * Sets the length of a string. Can be used to truncate or lengthen
577 * the string. If the string is lengthened, the function may fail and
578 * return #FALSE. Newly-added bytes are not initialized, as with
579 * _dbus_string_lengthen().
581 * @param str a string
582 * @param length new length of the string.
583 * @returns #FALSE on failure.
586 _dbus_string_set_length (DBusString *str,
589 DBUS_STRING_PREAMBLE (str);
590 _dbus_assert (length >= 0);
592 return set_length (real, length);
596 * Align the length of a string to a specific alignment (typically 4 or 8)
597 * by appending nul bytes to the string.
599 * @param str a string
600 * @param alignment the alignment
601 * @returns #FALSE if no memory
604 _dbus_string_align_length (DBusString *str,
609 DBUS_STRING_PREAMBLE (str);
610 _dbus_assert (alignment >= 1);
611 _dbus_assert (alignment <= 8); /* it has to be a bug if > 8 */
613 new_len = _DBUS_ALIGN_VALUE (real->len, alignment);
615 delta = new_len - real->len;
616 _dbus_assert (delta >= 0);
621 if (!set_length (real, new_len))
624 memset (real->str + (new_len - delta),
631 append (DBusRealString *real,
638 if (!_dbus_string_lengthen ((DBusString*)real, buffer_len))
641 memcpy (real->str + (real->len - buffer_len),
649 * Appends a nul-terminated C-style string to a DBusString.
651 * @param str the DBusString
652 * @param buffer the nul-terminated characters to append
653 * @returns #FALSE if not enough memory.
656 _dbus_string_append (DBusString *str,
661 DBUS_STRING_PREAMBLE (str);
662 _dbus_assert (buffer != NULL);
664 buffer_len = strlen (buffer);
666 return append (real, buffer, buffer_len);
670 * Appends block of bytes with the given length to a DBusString.
672 * @param str the DBusString
673 * @param buffer the bytes to append
674 * @param len the number of bytes to append
675 * @returns #FALSE if not enough memory.
678 _dbus_string_append_len (DBusString *str,
682 DBUS_STRING_PREAMBLE (str);
683 _dbus_assert (buffer != NULL);
684 _dbus_assert (len >= 0);
686 return append (real, buffer, len);
690 * Appends a single byte to the string, returning #FALSE
691 * if not enough memory.
693 * @param str the string
694 * @param byte the byte to append
695 * @returns #TRUE on success
698 _dbus_string_append_byte (DBusString *str,
701 DBUS_STRING_PREAMBLE (str);
703 if (!set_length (real, real->len + 1))
706 real->str[real->len-1] = byte;
712 * Appends a single Unicode character, encoding the character
715 * @param str the string
716 * @param ch the Unicode character
719 _dbus_string_append_unichar (DBusString *str,
727 DBUS_STRING_PREAMBLE (str);
729 /* this code is from GLib but is pretty standard I think */
743 else if (ch < 0x10000)
748 else if (ch < 0x200000)
753 else if (ch < 0x4000000)
764 if (!set_length (real, real->len + len))
767 out = real->str + (real->len - len);
769 for (i = len - 1; i > 0; --i)
771 out[i] = (ch & 0x3f) | 0x80;
780 delete (DBusRealString *real,
787 memmove (real->str + start, real->str + start + len, real->len - (start + len));
789 real->str[real->len] = '\0';
793 * Deletes a segment of a DBusString with length len starting at
794 * start. (Hint: to clear an entire string, setting length to 0
795 * with _dbus_string_set_length() is easier.)
797 * @param str the DBusString
798 * @param start where to start deleting
799 * @param len the number of bytes to delete
802 _dbus_string_delete (DBusString *str,
806 DBUS_STRING_PREAMBLE (str);
807 _dbus_assert (start >= 0);
808 _dbus_assert (len >= 0);
809 _dbus_assert ((start + len) <= real->len);
811 delete (real, start, len);
816 DBusRealString *dest,
822 if (!set_length (dest, dest->len + len))
825 memmove (dest->str + insert_at + len,
826 dest->str + insert_at,
827 dest->len - len - insert_at);
833 copy (DBusRealString *source,
836 DBusRealString *dest,
842 if (!open_gap (len, dest, insert_at))
845 memcpy (dest->str + insert_at,
853 * Checks assertions for two strings we're copying a segment between,
854 * and declares real_source/real_dest variables.
856 * @param source the source string
857 * @param start the starting offset
858 * @param dest the dest string
859 * @param insert_at where the copied segment is inserted
861 #define DBUS_STRING_COPY_PREAMBLE(source, start, dest, insert_at) \
862 DBusRealString *real_source = (DBusRealString*) source; \
863 DBusRealString *real_dest = (DBusRealString*) dest; \
864 _dbus_assert ((source) != (dest)); \
865 DBUS_GENERIC_STRING_PREAMBLE (real_source); \
866 DBUS_GENERIC_STRING_PREAMBLE (real_dest); \
867 _dbus_assert (!real_dest->constant); \
868 _dbus_assert (!real_dest->locked); \
869 _dbus_assert ((start) >= 0); \
870 _dbus_assert ((start) <= real_source->len); \
871 _dbus_assert ((insert_at) >= 0); \
872 _dbus_assert ((insert_at) <= real_dest->len)
875 * Moves the end of one string into another string. Both strings
876 * must be initialized, valid strings.
878 * @param source the source string
879 * @param start where to chop off the source string
880 * @param dest the destination string
881 * @param insert_at where to move the chopped-off part of source string
882 * @returns #FALSE if not enough memory
885 _dbus_string_move (DBusString *source,
890 DBUS_STRING_COPY_PREAMBLE (source, start, dest, insert_at);
892 if (!copy (real_source, start,
893 real_source->len - start,
898 delete (real_source, start,
899 real_source->len - start);
905 * Like _dbus_string_move(), but does not delete the section
906 * of the source string that's copied to the dest string.
908 * @param source the source string
909 * @param start where to start copying the source string
910 * @param dest the destination string
911 * @param insert_at where to place the copied part of source string
912 * @returns #FALSE if not enough memory
915 _dbus_string_copy (const DBusString *source,
920 DBUS_STRING_COPY_PREAMBLE (source, start, dest, insert_at);
922 return copy (real_source, start,
923 real_source->len - start,
929 * Like _dbus_string_move(), but can move a segment from
930 * the middle of the source string.
932 * @param source the source string
933 * @param start first byte of source string to move
934 * @param len length of segment to move
935 * @param dest the destination string
936 * @param insert_at where to move the bytes from the source string
937 * @returns #FALSE if not enough memory
940 _dbus_string_move_len (DBusString *source,
947 DBUS_STRING_COPY_PREAMBLE (source, start, dest, insert_at);
948 _dbus_assert (len >= 0);
949 _dbus_assert ((start + len) <= real_source->len);
951 if (!copy (real_source, start, len,
956 delete (real_source, start,
963 * Like _dbus_string_copy(), but can copy a segment from the middle of
966 * @param source the source string
967 * @param start where to start copying the source string
968 * @param len length of segment to copy
969 * @param dest the destination string
970 * @param insert_at where to place the copied segment of source string
971 * @returns #FALSE if not enough memory
974 _dbus_string_copy_len (const DBusString *source,
980 DBUS_STRING_COPY_PREAMBLE (source, start, dest, insert_at);
981 _dbus_assert (len >= 0);
982 _dbus_assert ((start + len) <= real_source->len);
984 return copy (real_source, start, len,
990 * Replaces a segment of dest string with a segment of source string.
992 * @todo optimize the case where the two lengths are the same, and
993 * avoid memmoving the data in the trailing part of the string twice.
995 * @param source the source string
996 * @param start where to start copying the source string
997 * @param len length of segment to copy
998 * @param dest the destination string
999 * @param replace_at start of segment of dest string to replace
1000 * @param replace_len length of segment of dest string to replace
1001 * @returns #FALSE if not enough memory
1005 _dbus_string_replace_len (const DBusString *source,
1012 DBUS_STRING_COPY_PREAMBLE (source, start, dest, replace_at);
1013 _dbus_assert (len >= 0);
1014 _dbus_assert ((start + len) <= real_source->len);
1015 _dbus_assert (replace_at >= 0);
1016 _dbus_assert ((replace_at + replace_len) <= real_dest->len);
1018 if (!copy (real_source, start, len,
1019 real_dest, replace_at))
1022 delete (real_dest, replace_at + len, replace_len);
1027 /* Unicode macros from GLib */
1029 /** computes length and mask of a unicode character
1030 * @param Char the char
1031 * @param Mask the mask variable to assign to
1032 * @param Len the length variable to assign to
1034 #define UTF8_COMPUTE(Char, Mask, Len) \
1040 else if ((Char & 0xe0) == 0xc0) \
1045 else if ((Char & 0xf0) == 0xe0) \
1050 else if ((Char & 0xf8) == 0xf0) \
1055 else if ((Char & 0xfc) == 0xf8) \
1060 else if ((Char & 0xfe) == 0xfc) \
1069 * computes length of a unicode character in UTF-8
1070 * @param Char the char
1072 #define UTF8_LENGTH(Char) \
1073 ((Char) < 0x80 ? 1 : \
1074 ((Char) < 0x800 ? 2 : \
1075 ((Char) < 0x10000 ? 3 : \
1076 ((Char) < 0x200000 ? 4 : \
1077 ((Char) < 0x4000000 ? 5 : 6)))))
1080 * Gets a UTF-8 value.
1082 * @param Result variable for extracted unicode char.
1083 * @param Chars the bytes to decode
1084 * @param Count counter variable
1085 * @param Mask mask for this char
1086 * @param Len length for this char in bytes
1088 #define UTF8_GET(Result, Chars, Count, Mask, Len) \
1089 (Result) = (Chars)[0] & (Mask); \
1090 for ((Count) = 1; (Count) < (Len); ++(Count)) \
1092 if (((Chars)[(Count)] & 0xc0) != 0x80) \
1098 (Result) |= ((Chars)[(Count)] & 0x3f); \
1102 * Check whether a unicode char is in a valid range.
1104 * @param Char the character
1106 #define UNICODE_VALID(Char) \
1107 ((Char) < 0x110000 && \
1108 ((Char) < 0xD800 || (Char) >= 0xE000) && \
1109 (Char) != 0xFFFE && (Char) != 0xFFFF)
1112 * Gets a unicode character from a UTF-8 string. Does no validation;
1113 * you must verify that the string is valid UTF-8 in advance and must
1114 * pass in the start of a character.
1116 * @param str the string
1117 * @param start the start of the UTF-8 character.
1118 * @param ch_return location to return the character
1119 * @param end_return location to return the byte index of next character
1120 * @returns #TRUE on success, #FALSE otherwise.
1123 _dbus_string_get_unichar (const DBusString *str,
1125 dbus_unichar_t *ch_return,
1129 dbus_unichar_t result;
1132 DBUS_CONST_STRING_PREAMBLE (str);
1137 *end_return = real->len;
1140 p = real->str + start;
1143 UTF8_COMPUTE (c, mask, len);
1146 UTF8_GET (result, p, i, mask, len);
1148 if (result == (dbus_unichar_t)-1)
1152 *ch_return = result;
1154 *end_return = start + len;
1158 * Finds the given substring in the string,
1159 * returning #TRUE and filling in the byte index
1160 * where the substring was found, if it was found.
1161 * Returns #FALSE if the substring wasn't found.
1162 * Sets *start to the length of the string if the substring
1165 * @param str the string
1166 * @param start where to start looking
1167 * @param substr the substring
1168 * @param found return location for where it was found, or #NULL
1169 * @returns #TRUE if found
1172 _dbus_string_find (const DBusString *str,
1178 DBUS_CONST_STRING_PREAMBLE (str);
1179 _dbus_assert (substr != NULL);
1180 _dbus_assert (start <= real->len);
1182 /* we always "find" an empty string */
1183 if (*substr == '\0')
1191 while (i < real->len)
1193 if (real->str[i] == substr[0])
1197 while (j < real->len)
1199 if (substr[j - i] == '\0')
1201 else if (real->str[j] != substr[j - i])
1207 if (substr[j - i] == '\0')
1225 * Finds the given substring in the string,
1226 * up to a certain position,
1227 * returning #TRUE and filling in the byte index
1228 * where the substring was found, if it was found.
1229 * Returns #FALSE if the substring wasn't found.
1230 * Sets *start to the length of the string if the substring
1233 * @param str the string
1234 * @param start where to start looking
1235 * @param end where to stop looking
1236 * @param substr the substring
1237 * @param found return location for where it was found, or #NULL
1238 * @returns #TRUE if found
1241 _dbus_string_find_to (const DBusString *str,
1248 DBUS_CONST_STRING_PREAMBLE (str);
1249 _dbus_assert (substr != NULL);
1250 _dbus_assert (start <= real->len);
1251 _dbus_assert (end <= real->len);
1252 _dbus_assert (start < end);
1254 /* we always "find" an empty string */
1255 if (*substr == '\0')
1263 while (i < real->len && i < end)
1265 if (real->str[i] == substr[0])
1269 while (j < real->len && j < end)
1271 if (substr[j - i] == '\0')
1273 else if (real->str[j] != substr[j - i])
1279 if (substr[j - i] == '\0')
1297 * Finds a blank (space or tab) in the string. Returns #TRUE
1298 * if found, #FALSE otherwise. If a blank is not found sets
1299 * *found to the length of the string.
1301 * @param str the string
1302 * @param start byte index to start looking
1303 * @param found place to store the location of the first blank
1304 * @returns #TRUE if a blank was found
1307 _dbus_string_find_blank (const DBusString *str,
1312 DBUS_CONST_STRING_PREAMBLE (str);
1313 _dbus_assert (start <= real->len);
1316 while (i < real->len)
1318 if (real->str[i] == ' ' ||
1319 real->str[i] == '\t')
1336 * Skips blanks from start, storing the first non-blank in *end
1338 * @param str the string
1339 * @param start where to start
1340 * @param end where to store the first non-blank byte index
1343 _dbus_string_skip_blank (const DBusString *str,
1348 DBUS_CONST_STRING_PREAMBLE (str);
1349 _dbus_assert (start <= real->len);
1352 while (i < real->len)
1354 if (!(real->str[i] == ' ' ||
1355 real->str[i] == '\t'))
1361 _dbus_assert (i == real->len || !(real->str[i] == ' ' ||
1362 real->str[i] == '\t'));
1369 * Tests two DBusString for equality.
1371 * @param a first string
1372 * @param b second string
1373 * @returns #TRUE if equal
1376 _dbus_string_equal (const DBusString *a,
1377 const DBusString *b)
1379 const unsigned char *ap;
1380 const unsigned char *bp;
1381 const unsigned char *a_end;
1382 const DBusRealString *real_a = (const DBusRealString*) a;
1383 const DBusRealString *real_b = (const DBusRealString*) b;
1384 DBUS_GENERIC_STRING_PREAMBLE (real_a);
1385 DBUS_GENERIC_STRING_PREAMBLE (real_b);
1387 if (real_a->len != real_b->len)
1392 a_end = real_a->str + real_a->len;
1406 * Checks whether a string is equal to a C string.
1408 * @param a the string
1409 * @param c_str the C string
1410 * @returns #TRUE if equal
1413 _dbus_string_equal_c_str (const DBusString *a,
1416 const unsigned char *ap;
1417 const unsigned char *bp;
1418 const unsigned char *a_end;
1419 const DBusRealString *real_a = (const DBusRealString*) a;
1420 DBUS_GENERIC_STRING_PREAMBLE (real_a);
1423 bp = (const unsigned char*) c_str;
1424 a_end = real_a->str + real_a->len;
1425 while (ap != a_end && *bp)
1434 if (*ap && *bp == '\0')
1436 else if (ap == a_end && *bp)
1443 * Checks whether a string starts with the given C string.
1445 * @param a the string
1446 * @param c_str the C string
1447 * @returns #TRUE if string starts with it
1450 _dbus_string_starts_with_c_str (const DBusString *a,
1453 const unsigned char *ap;
1454 const unsigned char *bp;
1455 const unsigned char *a_end;
1456 const DBusRealString *real_a = (const DBusRealString*) a;
1457 DBUS_GENERIC_STRING_PREAMBLE (real_a);
1460 bp = (const unsigned char*) c_str;
1461 a_end = real_a->str + real_a->len;
1462 while (ap != a_end && *bp)
1478 * Returns whether a string ends with the given suffix
1480 * @param a the string
1481 * @param c_str the C-style string
1482 * @returns #TRUE if the string ends with the suffix
1485 _dbus_string_ends_with_c_str (const DBusString *a,
1488 const unsigned char *ap;
1489 const unsigned char *bp;
1490 const unsigned char *a_end;
1492 const DBusRealString *real_a = (const DBusRealString*) a;
1493 DBUS_GENERIC_STRING_PREAMBLE (real_a);
1495 c_str_len = strlen (c_str);
1496 if (real_a->len < c_str_len)
1499 ap = real_a->str + (real_a->len - c_str_len);
1500 bp = (const unsigned char*) c_str;
1501 a_end = real_a->str + real_a->len;
1511 _dbus_assert (*ap == '\0');
1512 _dbus_assert (*bp == '\0');
1517 static const signed char base64_table[] = {
1584 /** The minimum char that's a valid char in Base64-encoded text */
1585 #define UNBASE64_MIN_CHAR (43)
1586 /** The maximum char that's a valid char in Base64-encoded text */
1587 #define UNBASE64_MAX_CHAR (122)
1588 /** Must subtract this from a char's integer value before offsetting
1589 * into unbase64_table
1591 #define UNBASE64_TABLE_OFFSET UNBASE64_MIN_CHAR
1592 static const signed char unbase64_table[] = {
1676 * Encodes a string using Base64, as documented in RFC 2045.
1678 * @param source the string to encode
1679 * @param start byte index to start encoding
1680 * @param dest string where encoded data should be placed
1681 * @param insert_at where to place encoded data
1682 * @returns #TRUE if encoding was successful, #FALSE if no memory etc.
1685 _dbus_string_base64_encode (const DBusString *source,
1692 const unsigned char *s;
1694 const unsigned char *triplet_end;
1695 const unsigned char *final_end;
1696 DBUS_STRING_COPY_PREAMBLE (source, start, dest, insert_at);
1697 _dbus_assert (source != dest);
1699 /* For each 24 bits (3 bytes) of input, we have 4 chars of
1702 source_len = real_source->len - start;
1703 dest_len = (source_len / 3) * 4;
1704 if (source_len % 3 != 0)
1707 if (source_len == 0)
1710 if (!open_gap (dest_len, real_dest, insert_at))
1713 d = real_dest->str + insert_at;
1714 s = real_source->str + start;
1715 final_end = real_source->str + (start + source_len);
1716 triplet_end = final_end - (source_len % 3);
1717 _dbus_assert (triplet_end <= final_end);
1718 _dbus_assert ((final_end - triplet_end) < 3);
1720 #define ENCODE_64(v) (base64_table[ (unsigned char) (v) ])
1721 #define SIX_BITS_MASK (0x3f)
1722 _dbus_assert (SIX_BITS_MASK < _DBUS_N_ELEMENTS (base64_table));
1724 while (s != triplet_end)
1726 unsigned int triplet;
1728 triplet = s[2] | (s[1] << 8) | (s[0] << 16);
1730 /* Encode each 6 bits. */
1732 *d++ = ENCODE_64 (triplet >> 18);
1733 *d++ = ENCODE_64 ((triplet >> 12) & SIX_BITS_MASK);
1734 *d++ = ENCODE_64 ((triplet >> 6) & SIX_BITS_MASK);
1735 *d++ = ENCODE_64 (triplet & SIX_BITS_MASK);
1740 switch (final_end - triplet_end)
1744 unsigned int doublet;
1746 doublet = s[1] | (s[0] << 8);
1748 *d++ = ENCODE_64 (doublet >> 12);
1749 *d++ = ENCODE_64 ((doublet >> 6) & SIX_BITS_MASK);
1750 *d++ = ENCODE_64 (doublet & SIX_BITS_MASK);
1756 unsigned int singlet;
1760 *d++ = ENCODE_64 ((singlet >> 6) & SIX_BITS_MASK);
1761 *d++ = ENCODE_64 (singlet & SIX_BITS_MASK);
1770 _dbus_assert (d == (real_dest->str + (insert_at + dest_len)));
1777 * Decodes a string from Base64, as documented in RFC 2045.
1779 * @param source the string to decode
1780 * @param start byte index to start decode
1781 * @param dest string where decoded data should be placed
1782 * @param insert_at where to place decoded data
1783 * @returns #TRUE if decoding was successful, #FALSE if no memory etc.
1786 _dbus_string_base64_decode (const DBusString *source,
1795 unsigned int triplet = 0;
1798 DBUS_STRING_COPY_PREAMBLE (source, start, dest, insert_at);
1799 _dbus_assert (source != dest);
1801 source_len = real_source->len - start;
1802 s = real_source->str + start;
1803 end = real_source->str + source_len;
1805 if (source_len == 0)
1808 if (!_dbus_string_init (&result, _DBUS_INT_MAX))
1815 /* The idea is to just skip anything that isn't
1816 * a base64 char - it's allowed to have whitespace,
1817 * newlines, etc. in here. We also ignore trailing
1818 * base64 chars, though that's suspicious.
1821 if (*s >= UNBASE64_MIN_CHAR &&
1822 *s <= UNBASE64_MAX_CHAR)
1826 /* '=' is padding, doesn't represent additional data
1827 * but does increment our count.
1836 val = unbase64_table[(*s) - UNBASE64_TABLE_OFFSET];
1841 triplet |= (unsigned int) val;
1846 if (sextet_count == 4)
1848 /* no pad = 3 bytes, 1 pad = 2 bytes, 2 pad = 1 byte */
1850 _dbus_string_append_byte (&result,
1854 _dbus_string_append_byte (&result,
1855 (triplet >> 8) & 0xff);
1857 _dbus_string_append_byte (&result,
1869 if (!_dbus_string_move (&result, 0, dest, insert_at))
1871 _dbus_string_free (&result);
1875 _dbus_string_free (&result);
1881 * Checks that the given range of the string
1882 * is valid ASCII. If the given range is not contained
1883 * in the string, returns #FALSE.
1885 * @param str the string
1886 * @param start first byte index to check
1887 * @param len number of bytes to check
1888 * @returns #TRUE if the byte range exists and is all valid ASCII
1891 _dbus_string_validate_ascii (const DBusString *str,
1895 const unsigned char *s;
1896 const unsigned char *end;
1897 DBUS_CONST_STRING_PREAMBLE (str);
1898 _dbus_assert (start >= 0);
1899 _dbus_assert (len >= 0);
1901 if ((start + len) > real->len)
1904 s = real->str + start;
1909 ((*s & ~0x7f) != 0))
1919 * Checks that the given range of the string
1920 * is valid UTF-8. If the given range is not contained
1921 * in the string, returns #FALSE. If the string
1922 * contains any nul bytes in the given range, returns
1925 * @todo right now just calls _dbus_string_validate_ascii()
1927 * @param str the string
1928 * @param start first byte index to check
1929 * @param len number of bytes to check
1930 * @returns #TRUE if the byte range exists and is all valid UTF-8
1933 _dbus_string_validate_utf8 (const DBusString *str,
1937 /* FIXME actually validate UTF-8 */
1938 return _dbus_string_validate_ascii (str, start, len);
1942 * Checks that the given range of the string
1943 * is all nul bytes. If the given range is
1944 * not contained in the string, returns #FALSE.
1946 * @param str the string
1947 * @param start first byte index to check
1948 * @param len number of bytes to check
1949 * @returns #TRUE if the byte range exists and is all nul bytes
1952 _dbus_string_validate_nul (const DBusString *str,
1956 const unsigned char *s;
1957 const unsigned char *end;
1958 DBUS_CONST_STRING_PREAMBLE (str);
1959 _dbus_assert (start >= 0);
1960 _dbus_assert (len >= 0);
1962 if ((start + len) > real->len)
1965 s = real->str + start;
1979 #ifdef DBUS_BUILD_TESTS
1980 #include "dbus-test.h"
1984 test_max_len (DBusString *str,
1989 if (!_dbus_string_set_length (str, max_len - 1))
1990 _dbus_assert_not_reached ("setting len to one less than max should have worked");
1993 if (!_dbus_string_set_length (str, max_len))
1994 _dbus_assert_not_reached ("setting len to max len should have worked");
1996 if (_dbus_string_set_length (str, max_len + 1))
1997 _dbus_assert_not_reached ("setting len to one more than max len should not have worked");
1999 if (!_dbus_string_set_length (str, 0))
2000 _dbus_assert_not_reached ("setting len to zero should have worked");
2004 test_base64_roundtrip (const unsigned char *data,
2012 len = strlen (data);
2014 if (!_dbus_string_init (&orig, _DBUS_INT_MAX))
2015 _dbus_assert_not_reached ("could not init string");
2017 if (!_dbus_string_init (&encoded, _DBUS_INT_MAX))
2018 _dbus_assert_not_reached ("could not init string");
2020 if (!_dbus_string_init (&decoded, _DBUS_INT_MAX))
2021 _dbus_assert_not_reached ("could not init string");
2023 if (!_dbus_string_append_len (&orig, data, len))
2024 _dbus_assert_not_reached ("couldn't append orig data");
2026 if (!_dbus_string_base64_encode (&orig, 0, &encoded, 0))
2027 _dbus_assert_not_reached ("could not encode");
2029 if (!_dbus_string_base64_decode (&encoded, 0, &decoded, 0))
2030 _dbus_assert_not_reached ("could not decode");
2032 if (!_dbus_string_equal (&orig, &decoded))
2036 printf ("Original string %d bytes encoded %d bytes decoded %d bytes\n",
2037 _dbus_string_get_length (&orig),
2038 _dbus_string_get_length (&encoded),
2039 _dbus_string_get_length (&decoded));
2040 printf ("Original: %s\n", data);
2041 _dbus_string_get_const_data (&decoded, &s);
2042 printf ("Decoded: %s\n", s);
2043 _dbus_assert_not_reached ("original string not the same as string decoded from base64");
2046 _dbus_string_free (&orig);
2047 _dbus_string_free (&encoded);
2048 _dbus_string_free (&decoded);
2052 * @ingroup DBusStringInternals
2053 * Unit test for DBusString.
2055 * @todo Need to write tests for _dbus_string_copy() and
2056 * _dbus_string_move() moving to/from each of start/middle/end of a
2057 * string. Also need tests for _dbus_string_move_len ()
2059 * @returns #TRUE on success.
2062 _dbus_string_test (void)
2069 int lens[] = { 0, 1, 2, 3, 4, 5, 10, 16, 17, 18, 25, 31, 32, 33, 34, 35, 63, 64, 65, 66, 67, 68, 69, 70, 71, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136 };
2074 while (i < _DBUS_N_ELEMENTS (lens))
2076 if (!_dbus_string_init (&str, lens[i]))
2077 _dbus_assert_not_reached ("failed to init string");
2079 test_max_len (&str, lens[i]);
2080 _dbus_string_free (&str);
2085 /* Test shortening and setting length */
2087 while (i < _DBUS_N_ELEMENTS (lens))
2091 if (!_dbus_string_init (&str, lens[i]))
2092 _dbus_assert_not_reached ("failed to init string");
2094 if (!_dbus_string_set_length (&str, lens[i]))
2095 _dbus_assert_not_reached ("failed to set string length");
2100 _dbus_assert (_dbus_string_get_length (&str) == j);
2103 _dbus_string_shorten (&str, 1);
2104 _dbus_assert (_dbus_string_get_length (&str) == (j - 1));
2109 _dbus_string_free (&str);
2114 /* Test appending data */
2115 if (!_dbus_string_init (&str, _DBUS_INT_MAX))
2116 _dbus_assert_not_reached ("failed to init string");
2121 if (!_dbus_string_append (&str, "a"))
2122 _dbus_assert_not_reached ("failed to append string to string\n");
2124 _dbus_assert (_dbus_string_get_length (&str) == i * 2 + 1);
2126 if (!_dbus_string_append_byte (&str, 'b'))
2127 _dbus_assert_not_reached ("failed to append byte to string\n");
2129 _dbus_assert (_dbus_string_get_length (&str) == i * 2 + 2);
2134 _dbus_string_free (&str);
2136 /* Check steal_data */
2138 if (!_dbus_string_init (&str, _DBUS_INT_MAX))
2139 _dbus_assert_not_reached ("failed to init string");
2141 if (!_dbus_string_append (&str, "Hello World"))
2142 _dbus_assert_not_reached ("could not append to string");
2144 i = _dbus_string_get_length (&str);
2146 if (!_dbus_string_steal_data (&str, &s))
2147 _dbus_assert_not_reached ("failed to steal data");
2149 _dbus_assert (_dbus_string_get_length (&str) == 0);
2150 _dbus_assert (((int)strlen (s)) == i);
2156 if (!_dbus_string_append (&str, "Hello World"))
2157 _dbus_assert_not_reached ("could not append to string");
2159 i = _dbus_string_get_length (&str);
2161 if (!_dbus_string_init (&other, _DBUS_INT_MAX))
2162 _dbus_assert_not_reached ("could not init string");
2164 if (!_dbus_string_move (&str, 0, &other, 0))
2165 _dbus_assert_not_reached ("could not move");
2167 _dbus_assert (_dbus_string_get_length (&str) == 0);
2168 _dbus_assert (_dbus_string_get_length (&other) == i);
2170 if (!_dbus_string_append (&str, "Hello World"))
2171 _dbus_assert_not_reached ("could not append to string");
2173 if (!_dbus_string_move (&str, 0, &other, _dbus_string_get_length (&other)))
2174 _dbus_assert_not_reached ("could not move");
2176 _dbus_assert (_dbus_string_get_length (&str) == 0);
2177 _dbus_assert (_dbus_string_get_length (&other) == i * 2);
2179 if (!_dbus_string_append (&str, "Hello World"))
2180 _dbus_assert_not_reached ("could not append to string");
2182 if (!_dbus_string_move (&str, 0, &other, _dbus_string_get_length (&other) / 2))
2183 _dbus_assert_not_reached ("could not move");
2185 _dbus_assert (_dbus_string_get_length (&str) == 0);
2186 _dbus_assert (_dbus_string_get_length (&other) == i * 3);
2188 _dbus_string_free (&other);
2192 if (!_dbus_string_append (&str, "Hello World"))
2193 _dbus_assert_not_reached ("could not append to string");
2195 i = _dbus_string_get_length (&str);
2197 if (!_dbus_string_init (&other, _DBUS_INT_MAX))
2198 _dbus_assert_not_reached ("could not init string");
2200 if (!_dbus_string_copy (&str, 0, &other, 0))
2201 _dbus_assert_not_reached ("could not copy");
2203 _dbus_assert (_dbus_string_get_length (&str) == i);
2204 _dbus_assert (_dbus_string_get_length (&other) == i);
2206 if (!_dbus_string_copy (&str, 0, &other, _dbus_string_get_length (&other)))
2207 _dbus_assert_not_reached ("could not copy");
2209 _dbus_assert (_dbus_string_get_length (&str) == i);
2210 _dbus_assert (_dbus_string_get_length (&other) == i * 2);
2211 _dbus_assert (_dbus_string_equal_c_str (&other,
2212 "Hello WorldHello World"));
2214 if (!_dbus_string_copy (&str, 0, &other, _dbus_string_get_length (&other) / 2))
2215 _dbus_assert_not_reached ("could not copy");
2217 _dbus_assert (_dbus_string_get_length (&str) == i);
2218 _dbus_assert (_dbus_string_get_length (&other) == i * 3);
2219 _dbus_assert (_dbus_string_equal_c_str (&other,
2220 "Hello WorldHello WorldHello World"));
2222 _dbus_string_free (&str);
2223 _dbus_string_free (&other);
2227 if (!_dbus_string_init (&str, _DBUS_INT_MAX))
2228 _dbus_assert_not_reached ("failed to init string");
2230 if (!_dbus_string_append (&str, "Hello World"))
2231 _dbus_assert_not_reached ("could not append to string");
2233 i = _dbus_string_get_length (&str);
2235 if (!_dbus_string_init (&other, _DBUS_INT_MAX))
2236 _dbus_assert_not_reached ("could not init string");
2238 if (!_dbus_string_replace_len (&str, 0, _dbus_string_get_length (&str),
2239 &other, 0, _dbus_string_get_length (&other)))
2240 _dbus_assert_not_reached ("could not replace");
2242 _dbus_assert (_dbus_string_get_length (&str) == i);
2243 _dbus_assert (_dbus_string_get_length (&other) == i);
2244 _dbus_assert (_dbus_string_equal_c_str (&other, "Hello World"));
2246 if (!_dbus_string_replace_len (&str, 0, _dbus_string_get_length (&str),
2248 _dbus_assert_not_reached ("could not replace center space");
2250 _dbus_assert (_dbus_string_get_length (&str) == i);
2251 _dbus_assert (_dbus_string_get_length (&other) == i * 2 - 1);
2252 _dbus_assert (_dbus_string_equal_c_str (&other,
2253 "HelloHello WorldWorld"));
2256 if (!_dbus_string_replace_len (&str, 1, 1,
2258 _dbus_string_get_length (&other) - 1,
2260 _dbus_assert_not_reached ("could not replace end character");
2262 _dbus_assert (_dbus_string_get_length (&str) == i);
2263 _dbus_assert (_dbus_string_get_length (&other) == i * 2 - 1);
2264 _dbus_assert (_dbus_string_equal_c_str (&other,
2265 "HelloHello WorldWorle"));
2267 _dbus_string_free (&str);
2268 _dbus_string_free (&other);
2270 /* Check append/get unichar */
2272 if (!_dbus_string_init (&str, _DBUS_INT_MAX))
2273 _dbus_assert_not_reached ("failed to init string");
2276 if (!_dbus_string_append_unichar (&str, 0xfffc))
2277 _dbus_assert_not_reached ("failed to append unichar");
2279 _dbus_string_get_unichar (&str, 0, &ch, &i);
2281 _dbus_assert (ch == 0xfffc);
2282 _dbus_assert (i == _dbus_string_get_length (&str));
2284 _dbus_string_free (&str);
2286 /* Check append/parse int/double */
2288 if (!_dbus_string_init (&str, _DBUS_INT_MAX))
2289 _dbus_assert_not_reached ("failed to init string");
2291 if (!_dbus_string_append_int (&str, 27))
2292 _dbus_assert_not_reached ("failed to append int");
2294 i = _dbus_string_get_length (&str);
2296 if (!_dbus_string_parse_int (&str, 0, &v, &end))
2297 _dbus_assert_not_reached ("failed to parse int");
2299 _dbus_assert (v == 27);
2300 _dbus_assert (end == i);
2302 _dbus_string_free (&str);
2304 if (!_dbus_string_init (&str, _DBUS_INT_MAX))
2305 _dbus_assert_not_reached ("failed to init string");
2307 if (!_dbus_string_append_double (&str, 50.3))
2308 _dbus_assert_not_reached ("failed to append float");
2310 i = _dbus_string_get_length (&str);
2312 if (!_dbus_string_parse_double (&str, 0, &d, &end))
2313 _dbus_assert_not_reached ("failed to parse float");
2315 _dbus_assert (d > (50.3 - 1e-6) && d < (50.3 + 1e-6));
2316 _dbus_assert (end == i);
2318 _dbus_string_free (&str);
2321 if (!_dbus_string_init (&str, _DBUS_INT_MAX))
2322 _dbus_assert_not_reached ("failed to init string");
2324 if (!_dbus_string_append (&str, "Hello"))
2325 _dbus_assert_not_reached ("couldn't append to string");
2327 if (!_dbus_string_find (&str, 0, "He", &i))
2328 _dbus_assert_not_reached ("didn't find 'He'");
2329 _dbus_assert (i == 0);
2331 if (!_dbus_string_find (&str, 0, "ello", &i))
2332 _dbus_assert_not_reached ("didn't find 'ello'");
2333 _dbus_assert (i == 1);
2335 if (!_dbus_string_find (&str, 0, "lo", &i))
2336 _dbus_assert_not_reached ("didn't find 'lo'");
2337 _dbus_assert (i == 3);
2339 if (!_dbus_string_find (&str, 2, "lo", &i))
2340 _dbus_assert_not_reached ("didn't find 'lo'");
2341 _dbus_assert (i == 3);
2343 if (_dbus_string_find (&str, 4, "lo", &i))
2344 _dbus_assert_not_reached ("did find 'lo'");
2346 if (!_dbus_string_find (&str, 0, "l", &i))
2347 _dbus_assert_not_reached ("didn't find 'l'");
2348 _dbus_assert (i == 2);
2350 if (!_dbus_string_find (&str, 0, "H", &i))
2351 _dbus_assert_not_reached ("didn't find 'H'");
2352 _dbus_assert (i == 0);
2354 if (!_dbus_string_find (&str, 0, "", &i))
2355 _dbus_assert_not_reached ("didn't find ''");
2356 _dbus_assert (i == 0);
2358 if (_dbus_string_find (&str, 0, "Hello!", NULL))
2359 _dbus_assert_not_reached ("Did find 'Hello!'");
2361 if (_dbus_string_find (&str, 0, "Oh, Hello", NULL))
2362 _dbus_assert_not_reached ("Did find 'Oh, Hello'");
2364 if (_dbus_string_find (&str, 0, "ill", NULL))
2365 _dbus_assert_not_reached ("Did find 'ill'");
2367 if (_dbus_string_find (&str, 0, "q", NULL))
2368 _dbus_assert_not_reached ("Did find 'q'");
2370 if (!_dbus_string_find_to (&str, 0, 2, "He", NULL))
2371 _dbus_assert_not_reached ("Didn't find 'He'");
2373 if (_dbus_string_find_to (&str, 0, 2, "Hello", NULL))
2374 _dbus_assert_not_reached ("Did find 'Hello'");
2376 _dbus_string_free (&str);
2379 test_base64_roundtrip ("Hello this is a string\n", -1);
2380 test_base64_roundtrip ("Hello this is a string\n1", -1);
2381 test_base64_roundtrip ("Hello this is a string\n12", -1);
2382 test_base64_roundtrip ("Hello this is a string\n123", -1);
2383 test_base64_roundtrip ("Hello this is a string\n1234", -1);
2384 test_base64_roundtrip ("Hello this is a string\n12345", -1);
2385 test_base64_roundtrip ("", 0);
2386 test_base64_roundtrip ("1", 1);
2387 test_base64_roundtrip ("12", 2);
2388 test_base64_roundtrip ("123", 3);
2389 test_base64_roundtrip ("1234", 4);
2390 test_base64_roundtrip ("12345", 5);
2391 test_base64_roundtrip ("", 1);
2392 test_base64_roundtrip ("1", 2);
2393 test_base64_roundtrip ("12", 3);
2394 test_base64_roundtrip ("123", 4);
2395 test_base64_roundtrip ("1234", 5);
2396 test_base64_roundtrip ("12345", 6);
2398 unsigned char buf[512];
2400 while (i < _DBUS_N_ELEMENTS (buf))
2406 while (i < _DBUS_N_ELEMENTS (buf))
2408 test_base64_roundtrip (buf, i);
2416 #endif /* DBUS_BUILD_TESTS */