| 1 /** |
1 /** |
| 2 * @file stringref.h Reference-counted immutable strings |
2 * @file stringref.h Reference-counted immutable strings |
| 3 * @ingroup core |
3 * @ingroup core |
| 4 * |
4 * |
| 5 * gaim |
5 * purple |
| 6 * |
6 * |
| 7 * Gaim is the legal property of its developers, whose names are too numerous |
7 * Purple is the legal property of its developers, whose names are too numerous |
| 8 * to list here. Please refer to the COPYRIGHT file distributed with this |
8 * to list here. Please refer to the COPYRIGHT file distributed with this |
| 9 * source distribution. |
9 * source distribution. |
| 10 * |
10 * |
| 11 * This program is free software; you can redistribute it and/or modify |
11 * This program is free software; you can redistribute it and/or modify |
| 12 * it under the terms of the GNU General Public License as published by |
12 * it under the terms of the GNU General Public License as published by |
| 21 * You should have received a copy of the GNU General Public License |
21 * You should have received a copy of the GNU General Public License |
| 22 * along with this program; if not, write to the Free Software |
22 * along with this program; if not, write to the Free Software |
| 23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 24 * |
24 * |
| 25 */ |
25 */ |
| 26 #ifndef _GAIM_STRINGREF_H_ |
26 #ifndef _PURPLE_STRINGREF_H_ |
| 27 #define _GAIM_STRINGREF_H_ |
27 #define _PURPLE_STRINGREF_H_ |
| 28 |
28 |
| 29 #ifdef __cplusplus |
29 #ifdef __cplusplus |
| 30 extern "C" { |
30 extern "C" { |
| 31 #endif |
31 #endif |
| 32 |
32 |
| 33 typedef struct _GaimStringref GaimStringref; |
33 typedef struct _PurpleStringref PurpleStringref; |
| 34 |
34 |
| 35 /** |
35 /** |
| 36 * Creates an immutable reference-counted string object. The newly |
36 * Creates an immutable reference-counted string object. The newly |
| 37 * created object will have a reference count of 1. |
37 * created object will have a reference count of 1. |
| 38 * |
38 * |
| 40 * duplicated. |
40 * duplicated. |
| 41 * |
41 * |
| 42 * @return A newly allocated string reference object with a refcount |
42 * @return A newly allocated string reference object with a refcount |
| 43 * of 1. |
43 * of 1. |
| 44 */ |
44 */ |
| 45 GaimStringref *gaim_stringref_new(const char *value); |
45 PurpleStringref *purple_stringref_new(const char *value); |
| 46 |
46 |
| 47 /** |
47 /** |
| 48 * Creates an immutable reference-counted string object. The newly |
48 * Creates an immutable reference-counted string object. The newly |
| 49 * created object will have a reference count of zero, and if it is |
49 * created object will have a reference count of zero, and if it is |
| 50 * not referenced before the next iteration of the mainloop it will |
50 * not referenced before the next iteration of the mainloop it will |
| 54 * duplicated. |
54 * duplicated. |
| 55 * |
55 * |
| 56 * @return A newly allocated string reference object with a refcount |
56 * @return A newly allocated string reference object with a refcount |
| 57 * of zero. |
57 * of zero. |
| 58 */ |
58 */ |
| 59 GaimStringref *gaim_stringref_new_noref(const char *value); |
59 PurpleStringref *purple_stringref_new_noref(const char *value); |
| 60 |
60 |
| 61 /** |
61 /** |
| 62 * Creates an immutable reference-counted string object from a printf |
62 * Creates an immutable reference-counted string object from a printf |
| 63 * format specification and arguments. The created object will have a |
63 * format specification and arguments. The created object will have a |
| 64 * reference count of 1. |
64 * reference count of 1. |
| 66 * @param format A printf-style format specification. |
66 * @param format A printf-style format specification. |
| 67 * |
67 * |
| 68 * @return A newly allocated string reference object with a refcount |
68 * @return A newly allocated string reference object with a refcount |
| 69 * of 1. |
69 * of 1. |
| 70 */ |
70 */ |
| 71 GaimStringref *gaim_stringref_printf(const char *format, ...); |
71 PurpleStringref *purple_stringref_printf(const char *format, ...); |
| 72 |
72 |
| 73 /** |
73 /** |
| 74 * Increase the reference count of the given stringref. |
74 * Increase the reference count of the given stringref. |
| 75 * |
75 * |
| 76 * @param stringref String to be referenced. |
76 * @param stringref String to be referenced. |
| 77 * |
77 * |
| 78 * @return A pointer to the referenced string. |
78 * @return A pointer to the referenced string. |
| 79 */ |
79 */ |
| 80 GaimStringref *gaim_stringref_ref(GaimStringref *stringref); |
80 PurpleStringref *purple_stringref_ref(PurpleStringref *stringref); |
| 81 |
81 |
| 82 /** |
82 /** |
| 83 * Decrease the reference count of the given stringref. If this |
83 * Decrease the reference count of the given stringref. If this |
| 84 * reference count reaches zero, the stringref will be freed; thus |
84 * reference count reaches zero, the stringref will be freed; thus |
| 85 * you MUST NOT use this string after dereferencing it. |
85 * you MUST NOT use this string after dereferencing it. |
| 86 * |
86 * |
| 87 * @param stringref String to be dereferenced. |
87 * @param stringref String to be dereferenced. |
| 88 */ |
88 */ |
| 89 void gaim_stringref_unref(GaimStringref *stringref); |
89 void purple_stringref_unref(PurpleStringref *stringref); |
| 90 |
90 |
| 91 /** |
91 /** |
| 92 * Retrieve the value of a stringref. |
92 * Retrieve the value of a stringref. |
| 93 * |
93 * |
| 94 * @note This value should not be cached or stored in a local variable. |
94 * @note This value should not be cached or stored in a local variable. |
| 102 * |
102 * |
| 103 * @param stringref String reference from which to retrieve the value. |
103 * @param stringref String reference from which to retrieve the value. |
| 104 * |
104 * |
| 105 * @return The contents of the string reference. |
105 * @return The contents of the string reference. |
| 106 */ |
106 */ |
| 107 const char *gaim_stringref_value(const GaimStringref *stringref); |
107 const char *purple_stringref_value(const PurpleStringref *stringref); |
| 108 |
108 |
| 109 /** |
109 /** |
| 110 * Compare two stringrefs for string equality. This returns the same |
110 * Compare two stringrefs for string equality. This returns the same |
| 111 * value as strcmp would, where <0 indicates that s1 is "less than" s2 |
111 * value as strcmp would, where <0 indicates that s1 is "less than" s2 |
| 112 * in the ASCII lexicography, 0 indicates equality, etc. |
112 * in the ASCII lexicography, 0 indicates equality, etc. |
| 115 * |
115 * |
| 116 * @param s2 The string to compare against the reference. |
116 * @param s2 The string to compare against the reference. |
| 117 * |
117 * |
| 118 * @return An ordering indication on s1 and s2. |
118 * @return An ordering indication on s1 and s2. |
| 119 */ |
119 */ |
| 120 int gaim_stringref_cmp(const GaimStringref *s1, const GaimStringref *s2); |
120 int purple_stringref_cmp(const PurpleStringref *s1, const PurpleStringref *s2); |
| 121 |
121 |
| 122 /** |
122 /** |
| 123 * Find the length of the string inside a stringref. |
123 * Find the length of the string inside a stringref. |
| 124 * |
124 * |
| 125 * @param stringref The string in whose length we are interested. |
125 * @param stringref The string in whose length we are interested. |
| 126 * |
126 * |
| 127 * @return The length of the string in stringref |
127 * @return The length of the string in stringref |
| 128 */ |
128 */ |
| 129 size_t gaim_stringref_len(const GaimStringref *stringref); |
129 size_t purple_stringref_len(const PurpleStringref *stringref); |
| 130 |
130 |
| 131 #ifdef __cplusplus |
131 #ifdef __cplusplus |
| 132 } |
132 } |
| 133 #endif |
133 #endif |
| 134 |
134 |
| 135 #endif /* _GAIM_STRINGREF_H_ */ |
135 #endif /* _PURPLE_STRINGREF_H_ */ |