blob: 8abe4fa3df9227fbaefdda90bf0d0839a256e1e8 (
plain)
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
|
// 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 <string>
#include <glib.h>
#include "svg/strip-trailing-zeros.h"
std::string
strip_trailing_zeros(std::string str)
{
std::string::size_type p_ix = str.find('.');
if (p_ix != std::string::npos) {
std::string::size_type e_ix = str.find('e', p_ix);
/* N.B. In some contexts (e.g. CSS) it is an error for a number to contain `e'. fixme:
* Default to avoiding `e', e.g. using sprintf(str, "%17f", d). Add a new function that
* allows use of `e' and use that function only where the spec allows it.
*/
std::string::size_type nz_ix = str.find_last_not_of('0', (e_ix == std::string::npos
? e_ix
: e_ix - 1));
if (nz_ix == std::string::npos || nz_ix < p_ix || nz_ix >= e_ix) {
g_error("have `.' but couldn't find non-0");
} else {
str.erase(str.begin() + (nz_ix == p_ix
? p_ix
: nz_ix + 1),
(e_ix == std::string::npos
? str.end()
: str.begin() + e_ix));
}
}
return str;
}
/*
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 :
|
