2 This file is part of GNUnet.
3 (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009 Christian Grothoff (and other contributing authors)
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6 it under the terms of the GNU General Public License as published
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13 General Public License for more details.
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22 * @file include/gnunet_strings_lib.h
23 * @brief strings and string handling functions (including malloc
24 * and string tokenizing)
26 * @author Christian Grothoff
27 * @author Krista Bennett
28 * @author Gerd Knorr <kraxel@bytesex.org>
29 * @author Ioana Patrascu
30 * @author Tzvetan Horozov
33 #ifndef GNUNET_STRINGS_LIB_H
34 #define GNUNET_STRINGS_LIB_H
36 /* we need size_t, and since it can be both unsigned int
37 or unsigned long long, this IS platform dependent;
38 but "stdlib.h" should be portable 'enough' to be
39 unconditionally available... */
45 #if 0 /* keep Emacsens' auto-indent happy */
50 #include "gnunet_time_lib.h"
54 * Convert a given fancy human-readable size to bytes.
56 * @param fancy_size human readable string (i.e. 1 MB)
57 * @param size set to the size in bytes
58 * @return GNUNET_OK on success, GNUNET_SYSERR on error
61 GNUNET_STRINGS_fancy_size_to_bytes (const char *fancy_size,
62 unsigned long long *size);
66 * Convert a given filesize into a fancy human-readable format.
68 * @param size number of bytes
69 * @return fancy representation of the size (possibly rounded) for humans
72 GNUNET_STRINGS_byte_size_fancy (unsigned long long size);
76 * Convert the len characters long character sequence
77 * given in input that is in the given charset
80 * @param input the input string (not necessarily 0-terminated)
81 * @param len the number of bytes in the input
82 * @param charset character set to convert from
83 * @return the converted string (0-terminated)
86 GNUNET_STRINGS_to_utf8 (const char *input, size_t len, const char *charset);
90 * Complete filename (a la shell) from abbrevition.
92 * @param fil the name of the file, may contain ~/ or
93 * be relative to the current directory
94 * @return the full file name,
95 * NULL is returned on error
98 GNUNET_STRINGS_filename_expand (const char *fil);
102 * Fill a buffer of the given size with
103 * count 0-terminated strings (given as varargs).
104 * If "buffer" is NULL, only compute the amount of
105 * space required (sum of "strlen(arg)+1").
107 * Unlike using "snprintf" with "%s", this function
108 * will add 0-terminators after each string. The
109 * "GNUNET_string_buffer_tokenize" function can be
110 * used to parse the buffer back into individual
113 * @param buffer the buffer to fill with strings, can
114 * be NULL in which case only the necessary
115 * amount of space will be calculated
116 * @param size number of bytes available in buffer
117 * @param count number of strings that follow
118 * @param ... count 0-terminated strings to copy to buffer
119 * @return number of bytes written to the buffer
120 * (or number of bytes that would have been written)
123 GNUNET_STRINGS_buffer_fill (char *buffer, size_t size, unsigned int count, ...);
127 * Given a buffer of a given size, find "count"
128 * 0-terminated strings in the buffer and assign
129 * the count (varargs) of type "const char**" to the
130 * locations of the respective strings in the
133 * @param buffer the buffer to parse
134 * @param size size of the buffer
135 * @param count number of strings to locate
136 * @param ... pointers to where to store the strings
137 * @return offset of the character after the last 0-termination
138 * in the buffer, or 0 on error.
141 GNUNET_STRINGS_buffer_tokenize (const char *buffer, size_t size,
142 unsigned int count, ...);
147 * "man ctime_r", except for GNUnet time; also, unlike ctime, the
148 * return value does not include the newline character.
150 * @param t the absolute time to convert
151 * @return timestamp in human-readable form
154 GNUNET_STRINGS_absolute_time_to_string (struct GNUNET_TIME_Absolute t);
158 * Give relative time in human-readable fancy format.
160 * @param delta time in milli seconds
161 * @return string in human-readable form
164 GNUNET_STRINGS_relative_time_to_string (struct GNUNET_TIME_Relative delta);
166 #if 0 /* keep Emacsens' auto-indent happy */
174 /* ifndef GNUNET_UTIL_STRING_H */
176 /* end of gnunet_util_string.h */