Cleanup: Move *_loc formatting functions into new format.cpp file

qthelper.cpp is already quite voluminous. Move the recently
introduced localized versions of (v)snprintf() and put_format()
into their own translation unit.

Moreover, adopt C-style semantics for asprintf_loc(). This function
will be used to remove fixed-size buffers in core/plannernotes.c.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

1 files changed, 29 insertions, 0 deletions

diff --git a/core/format.h b/core/format.h
new file mode 100644
index 000000000..0498fe2be
--- /dev/null
+++ b/core/format.h
@@ -0,0 +1,29 @@
+#ifndef FORMAT_H
+#define FORMAT_H
+
+#ifdef __GNUC__
+#define __printf(x, y) __attribute__((__format__(__printf__, x, y)))
+#else
+#define __printf(x, y)
+#endif
+
+#ifdef __cplusplus
+#include <QString>
+__printf(1, 2) QString qasprintf_loc(const char *cformat, ...);
+__printf(1, 0) QString vqasprintf_loc(const char *cformat, va_list ap);
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+__printf(3, 4) int snprintf_loc(char *dst, size_t size, const char *cformat, ...);
+__printf(3, 0) int vsnprintf_loc(char *dst, size_t size, const char *cformat, va_list ap);
+__printf(2, 3) int asprintf_loc(char **dst, const char *cformat, ...);
+__printf(2, 0) int vasprintf_loc(char **dst, const char *cformat, va_list ap);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif