Localization: Make Qt's locale-aware formatting accessible from C

This commit introduces functions:
 - QString asprintf_loc(const char *cformat, ...);
 - int snprintf_loc(char *dst, size_t size, const char *cformat, ...);
 - put_format_loc(struct membuffer *, const char *fmt, ...);
and their va_arg equivalents, which use Qt's QString::arg() formatting
options to render the strings.

The snprintf_loc() function takes care not to truncate multi-byte
UTF-8 encodings. Thus, on overflow, the resulting string might be
shorter than size-1.

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

1 files changed, 10 insertions, 1 deletions

diff --git a/core/membuffer.c b/core/membuffer.c
index 18a0203fc..1d486b3a6 100644
--- a/core/membuffer.c
+++ b/core/membuffer.c
@@ -52,7 +52,7 @@ static void oom(void)
 	exit(1);
 }
 
-static void make_room(struct membuffer *b, unsigned int size)
+void make_room(struct membuffer *b, unsigned int size)
 {
 	unsigned int needed = b->len + size;
 	if (needed > b->alloc) {
@@ -141,6 +141,15 @@ void put_format(struct membuffer *b, const char *fmt, ...)
 	va_end(args);
 }
 
+void put_format_loc(struct membuffer *b, const char *fmt, ...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	put_vformat_loc(b, fmt, args);
+	va_end(args);
+}
+
 void put_milli(struct membuffer *b, const char *pre, int value, const char *post)
 {
 	int i;