security/sandbox/chromium/base/strings/string_util_stripped.cc@6474c204b198
security/sandbox/chromium/base/strings/string_util_stripped.cc
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 #include <wchar.h>
3 namespace base {
5 bool IsWprintfFormatPortable(const wchar_t* format) {
6 for (const wchar_t* position = format; *position != '\0'; ++position) {
7 if (*position == '%') {
8 bool in_specification = true;
9 bool modifier_l = false;
10 while (in_specification) {
11 // Eat up characters until reaching a known specifier.
12 if (*++position == '\0') {
13 // The format string ended in the middle of a specification. Call
14 // it portable because no unportable specifications were found. The
15 // string is equally broken on all platforms.
16 return true;
17 }
19 if (*position == 'l') {
20 // 'l' is the only thing that can save the 's' and 'c' specifiers.
21 modifier_l = true;
22 } else if (((*position == 's' || *position == 'c') && !modifier_l) ||
23 *position == 'S' || *position == 'C' || *position == 'F' ||
24 *position == 'D' || *position == 'O' || *position == 'U') {
25 // Not portable.
26 return false;
27 }
29 if (wcschr(L"diouxXeEfgGaAcspn%", *position)) {
30 // Portable, keep scanning the rest of the format string.
31 in_specification = false;
32 }
33 }
34 }
35 }
37 return true;
38 }
40 } // namespace base
