MySQL 8.0.30
Source Code Documentation
my_basename.h
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1/* Copyright (c) 2017, 2022, Oracle and/or its affiliates.
2
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9 as designated in a particular file or component or in included license
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12 separately licensed software that they have included with MySQL.
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License, version 2.0, for more details.
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20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
22
23#ifndef MY_BASENAME_INCLUDED
24#define MY_BASENAME_INCLUDED
25
26/**
27 @file include/my_basename.h
28 A macro that gives __FILE__ without the directory name (e.g. foo.cc instead of
29 ../sql/foo.cc), calculated compile-time. Note that the entire __FILE__
30 string is still present in the binary; only the pointer is adjusted.
31*/
32
33static constexpr int basename_index(const char *const path, const int index) {
34 return (index == -1 || path[index] == '/' || path[index] == '\\')
35 ? index + 1
36 : basename_index(path, index - 1);
37}
38
39#define MY_BASENAME (&__FILE__[basename_index(__FILE__, sizeof(__FILE__) - 1)])
40
41#ifndef LOG_SUBSYSTEM_TAG
42constexpr const char *basename_prefix_eval(const char *const path) {
43 return (path[0] == 'r' && path[1] == 'p' && path[2] == 'l' && path[3] == '_')
44 ? "Repl"
45 : nullptr;
46}
47
48constexpr int basename_prefix_find(const char *const path, const int index) {
49 return (path[index] == '/' || path[index] == '\\')
50 ? index + 1
51 : basename_prefix_find(path, index - 1);
52}
53
54#define LOG_SUBSYSTEM_TAG \
55 basename_prefix_eval( \
56 &__FILE__[basename_prefix_find(__FILE__, sizeof(__FILE__) - 1)])
57
58#endif
59
60#endif // MY_BASENAME_INCLUDED
constexpr const char * basename_prefix_eval(const char *const path)
Definition: my_basename.h:42
static constexpr int basename_index(const char *const path, const int index)
Definition: my_basename.h:33
constexpr int basename_prefix_find(const char *const path, const int index)
Definition: my_basename.h:48
static char * path
Definition: mysqldump.cc:133