1 /* Cumulus: Efficient Filesystem Backup to the Cloud
2 * Copyright (C) 2007-2008 The Cumulus Developers
3 * See the AUTHORS file for a list of contributors.
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.
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.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 /* Utility functions for converting various datatypes to text format (and
21 * later, for parsing them back, perhaps). */
27 #include <uuid/uuid.h>
38 /* Perform URI-style escaping of a string. Bytes which cannot be represented
39 * directly are encoded in the form %xx (where "xx" is a string of two
40 * hexadecimal digits). */
41 string uri_encode(const string &in)
45 for (size_t i = 0; i < in.length(); i++) {
46 unsigned char c = in[i];
48 if (c >= '+' && c < 0x7f && c != '@') {
52 sprintf(buf, "%%%02x", c);
60 /* Decoding of strings produced by uri_encode. */
61 string uri_decode(const string &in)
63 char *buf = new char[in.size() + 1];
65 const char *input = in.c_str();
68 while (*input != '\0') {
71 if (isxdigit(input[1]) && isxdigit(input[2])) {
75 *output++ = strtol(hexbuf, NULL, 16);
92 /* Return the string representation of an integer. Will try to produce output
93 * in decimal, hexadecimal, or octal according to base, though this is just
94 * advisory. For negative numbers, will always use decimal. */
95 string encode_int(long long n, int base)
99 if (n >= 0 && base == 16) {
100 sprintf(buf, "0x%llx", n);
104 if (n > 0 && base == 8) {
105 sprintf(buf, "0%llo", n);
109 sprintf(buf, "%lld", n);
113 /* Parse the string representation of an integer. Accepts decimal, octal, and
114 * hexadecimal, just as C would (recognizes the 0 and 0x prefixes). */
115 long long parse_int(const string &s)
117 return strtoll(s.c_str(), NULL, 0);
120 /* Mark a file descriptor as close-on-exec. */
123 long flags = fcntl(fd, F_GETFD);
128 fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
131 /* Report a fatal error and exit. */
132 void fatal(string msg)
134 fprintf(stderr, "FATAL: %s\n", msg.c_str());