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authorTom Gundersen <teg@jklm.no>2015-10-27 16:55:16 +0100
committerTom Gundersen <teg@jklm.no>2015-10-27 16:55:16 +0100
commit0d0696812980d8f41c54739ad73716a233a2fa7c (patch)
tree217d98308a3039e106efde5fd6a7b6a657916950 /src/basic/stdio-util.h
parentf47fc3ffc4b69a00083a76308f777b52afb8efbf (diff)
parent7760171904ef007f19e8f46aa240a00e382d5b74 (diff)
Merge pull request #1691 from poettering/util-lib-3
split up util.h and macro.h into even more bits
Diffstat (limited to 'src/basic/stdio-util.h')
-rw-r--r--src/basic/stdio-util.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/src/basic/stdio-util.h b/src/basic/stdio-util.h
new file mode 100644
index 0000000000..b36e8a947e
--- /dev/null
+++ b/src/basic/stdio-util.h
@@ -0,0 +1,78 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <printf.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+
+#include "macro.h"
+
+#define xsprintf(buf, fmt, ...) \
+ assert_message_se((size_t) snprintf(buf, ELEMENTSOF(buf), fmt, __VA_ARGS__) < ELEMENTSOF(buf), "xsprintf: " #buf "[] must be big enough")
+
+
+#define VA_FORMAT_ADVANCE(format, ap) \
+do { \
+ int _argtypes[128]; \
+ size_t _i, _k; \
+ _k = parse_printf_format((format), ELEMENTSOF(_argtypes), _argtypes); \
+ assert(_k < ELEMENTSOF(_argtypes)); \
+ for (_i = 0; _i < _k; _i++) { \
+ if (_argtypes[_i] & PA_FLAG_PTR) { \
+ (void) va_arg(ap, void*); \
+ continue; \
+ } \
+ \
+ switch (_argtypes[_i]) { \
+ case PA_INT: \
+ case PA_INT|PA_FLAG_SHORT: \
+ case PA_CHAR: \
+ (void) va_arg(ap, int); \
+ break; \
+ case PA_INT|PA_FLAG_LONG: \
+ (void) va_arg(ap, long int); \
+ break; \
+ case PA_INT|PA_FLAG_LONG_LONG: \
+ (void) va_arg(ap, long long int); \
+ break; \
+ case PA_WCHAR: \
+ (void) va_arg(ap, wchar_t); \
+ break; \
+ case PA_WSTRING: \
+ case PA_STRING: \
+ case PA_POINTER: \
+ (void) va_arg(ap, void*); \
+ break; \
+ case PA_FLOAT: \
+ case PA_DOUBLE: \
+ (void) va_arg(ap, double); \
+ break; \
+ case PA_DOUBLE|PA_FLAG_LONG_DOUBLE: \
+ (void) va_arg(ap, long double); \
+ break; \
+ default: \
+ assert_not_reached("Unknown format string argument."); \
+ } \
+ } \
+} while(false)