1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* Copyright 2005 James Bursa <bursa@users.sourceforge.net>
* Copyright 2005 John M Bell <jmb202@ecs.soton.ac.uk>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* \file utils/url.h
* \brief Interface to URL parsing and joining operations.
*/
#ifndef _NETSURF_UTILS_URL_H_
#define _NETSURF_UTILS_URL_H_
#include "utils/errors.h"
/** File url prefix. */
#define FILE_SCHEME_PREFIX "file:///"
/** File url prefix length. */
#define FILE_SCHEME_PREFIX_LEN 8
/** Split out components of a url. */
struct url_components {
const char *buffer;
const char *scheme;
const char *authority;
const char *path;
const char *query;
const char *fragment;
};
/**
* Initialise URL routines.
*
* Compiles regular expressions required by the url_ functions.
*/
void url_init(void);
/**
* Check whether a host string is an IP address.
*
* This call detects IPv4 addresses (all of dotted-quad or subsets,
* decimal or hexadecimal notations) and IPv6 addresses (including
* those containing embedded IPv4 addresses.)
*
* \param host a hostname terminated by '\0'
* \return true if the hostname is an IP address, false otherwise
*/
bool url_host_is_ip_address(const char *host);
/**
* Resolve a relative URL to absolute form.
*
* \param rel relative URL
* \param base base URL, must be absolute and cleaned as by nsurl_create()
* \param result pointer to pointer to buffer to hold absolute url
* \return NSERROR_OK on success
*/
nserror url_join(const char *rel, const char *base, char **result);
/**
* Return the host name from an URL.
*
* \param url an absolute URL
* \param result pointer to pointer to buffer to hold host name
* \return NSERROR_OK on success
*/
nserror url_host(const char *url, char **result);
/**
* Return the scheme name from an URL.
*
* See RFC 3986, 3.1 for reference.
*
* \param url an absolute URL
* \param result pointer to pointer to buffer to hold scheme name
* \return NSERROR_OK on success
*/
nserror url_scheme(const char *url, char **result);
/**
* Attempt to find a nice filename for a URL.
*
* \param url an absolute URL
* \param result pointer to pointer to buffer to hold filename
* \param remove_extensions remove any extensions from the filename
* \return NSERROR_OK on success
*/
nserror url_nice(const char *url, char **result, bool remove_extensions);
/**
* Escape a string suitable for inclusion in an URL.
*
* \param unescaped the unescaped string
* \param toskip number of bytes to skip in unescaped string
* \param sptoplus true iff spaces should be converted to +
* \param escexceptions NULL or a string of characters excluded to be escaped
* \param result pointer to pointer to buffer to hold escaped string
* \return NSERROR_OK on success
*/
nserror url_escape(const char *unescaped, size_t toskip, bool sptoplus, const char *escexceptions, char **result);
/**
* Convert an escaped string to plain.
* \param result unescaped string owned by caller must be freed with free()
* \return NSERROR_OK on success
*/
nserror url_unescape(const char *str, char **result);
/**
* Extract path segment from an URL
*
* \param url an absolute URL
* \param result pointer to pointer to buffer to hold result
* \return NSERROR_OK on success
*/
nserror url_path(const char *url, char **result);
#endif
|