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// SPDX-License-Identifier: GPL-2.0-or-later
/** @file
* TODO: insert short description here
*//*
* Authors: see git history
*
* Copyright (C) 2018 Authors
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <cstring>
#include <glib.h>
#include "extract-uri.h"
// FIXME: kill this ugliness when we have a proper CSS parser
// Functions as per 4.3.4 of CSS 2.1
// http://www.w3.org/TR/CSS21/syndata.html#uri
std::string extract_uri(char const *s, char const **endptr)
{
std::string result;
if (!s)
return result;
gchar const *sb = s;
if ( strlen(sb) < 4 || strncmp(sb, "url", 3) != 0 ) {
return result;
}
sb += 3;
if ( endptr ) {
*endptr = nullptr;
}
// This first whitespace technically is not allowed.
// Just left in for now for legacy behavior.
while ( ( *sb == ' ' ) ||
( *sb == '\t' ) )
{
sb++;
}
if ( *sb == '(' ) {
sb++;
while ( ( *sb == ' ' ) ||
( *sb == '\t' ) )
{
sb++;
}
gchar delim = ')';
if ( (*sb == '\'' || *sb == '"') ) {
delim = *sb;
sb++;
}
if (!*sb) {
return result;
}
gchar const* se = sb;
while ( *se && (*se != delim) ) {
se++;
}
// we found the delimiter
if ( *se ) {
if ( delim == ')' ) {
if ( endptr ) {
*endptr = se + 1;
}
// back up for any trailing whitespace
while (se > sb && g_ascii_isspace(se[-1]))
{
se--;
}
result = std::string(sb, se);
} else {
gchar const* tail = se + 1;
while ( ( *tail == ' ' ) ||
( *tail == '\t' ) )
{
tail++;
}
if ( *tail == ')' ) {
if ( endptr ) {
*endptr = tail + 1;
}
result = std::string(sb, se);
}
}
}
}
return result;
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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