On Thu, Apr 18, 2013 at 7:27 PM, Mike Small <sma...@panix.com> wrote:
> Ben Tilly <bti...@gmail.com> writes:
>
>> I've just come up with a better answer to this question. If I was a
>> C/C++ programmer this would have been obvious to me before, and it
>> solves a bunch of annoyances for me at once.
>>
>> #ifndef UTIL_H
>> #define UTIL_H
>>
>> #include <string>
>> #include <stdio.h>
>> #include <stdarg.h>
>>
>> std::string stringf(const char * format_str, ...) {
>> va_list arg_list;
>> char * c_string;
>> va_start(arg_list, format_str);
>> vasprintf(&c_string, format_str, arg_list);
>> std::string answer = std::string(c_string);
>> free(c_string);
>> va_end(arg_list);
>> return answer;
>> }
>>
>> namespace {
>> int tests = 0;
>>
>> int next_test () {
>> return ++tests;
>> }
>>
>> int current_test () {
>> return tests;
>> }
>> }
>>
>> void ok (bool is_ok, const char * description, ...) {
>> std::string status
>> = stringf("%s %d", is_ok ? "ok" : "not ok", next_test());
>
> #include <sstream>
> ...
>
> void ok (bool is_ok, const char * description, ...) {
> ostringstream oss_status;
> oss_status << (is_ok ? "ok " : "not ok ") << next_test();
>
> va_list arg_list;
> char * c_string;
> va_start(arg_list, description);
> vasprintf(&c_string, description, arg_list);
> va_end(arg_list);
> printf("%s: %s\n", oss_status.str().c_str(), c_string);
> free(c_string);
> }
I am deliberately trying to follow something fairly close to the
Google C++ style. Hence not using streams for this was entirely
intentional.
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