We had locale aware formatting functions that generated QStrings.
Create an alternative that creates std::string, since we want that
in the core.
This commit is unfortunate for two reasons:
- The function is called "casprintf()" for analogy with the QString
version. However, the non locale aware function is called
"format_string_std()" for analogy with "format_string()".
Ultimately these names should be unified. Probably, once there
are no membuffer users left.
- This does UTF-16->UTF-8->UTF-16 roundtrips. The core formatting
functions should render UTF-8 and only convert to UTF-16, in
the UI layer.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Unfortunately Coverity doesn't understand that most Qt data
structures are copy-on-write. It's a mis-feature of Qt, but
it is the way it is. Thus, passing by value is not an issue.
Out of ca. 25 warnings only two were legit. Let's silence
the others by either std::move()ing or passing by reference,
as would be idiomatic C++, which Qt is not.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
C-style memory management is a pain and nearly nobody seems to get
it right. Add a C++-version of membuffer that frees the buffer
when it gets out-of-scope. Originally, I was thinking about
conditionally adding a constructor/destructor pair when compiling
with C++. But then decided to create a derived class membufferpp,
because it would be extremely confusing to have behavioral change
when changing a source from from C to C++ or vice-versa.
Also add a comment about the dangers of returned pointer: They
become dangling on changes to the membuffer.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
Move duplicate code, which reads '*' arguments from va_list into
parse_fmt_int() function. To pass pointers-to-va_list, the va_list
has to be copied first.
Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
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>
