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2020-10-01membuffer: be defensive about bad C library vsnprintf implementationsGravatar Linus Torvalds
Dirk reports that some Windows users have had odd corruption in the commit messages in the cloud storage. They make no sense at all unless there is some very weird Windows library bug. The prime suspect is 'vsnprintf()' returning a negative error when the target buffer is too small (rather than the proper "this is how much space it would need"). That is a very traditional C library bug that I thougth had been fixed everywhere, but there doesn't really seem to be a lot of other likely causes. So let's make our membuffer code be defensive against bad libraries that return negative error numbers from vsnprintf. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-05-01cleanup: move FRACTION macro from dive.h to units.hGravatar Berthold Stoeger
There appears to be no reason to slurp in all dive.h when compiling membuffer.c. units.h might not seem like the perfect place, but it is the most fitting I found. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-10-27Don't expose 'detach_buffer()' to membuffer usersGravatar Linus Torvalds
The native buffer of a membuffer is not NUL-terminated, so when you want to detach it and use it as a C string, you had to first do 'mb_cstring()' that adds the proper termination/ This was all documented in the header files, and all but two users did it correctly. But there were those two users, and the exported interface was unnecessarily hard to use. We do want the "just detach the raw buffer" internally in the membuffer code, but let's not make the exported interface be that hard to use. So this switches the exported interface to be 'detach_cstring()', which does that 'mb_cstring()' for you, and avoids the possibility that you'd use a non-terminated memory buffer as a C string. The old 'detach_buffer()' is now purely the internal membuffer implementation, and not used by others. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-09-21Cleanup: make location argument to put_location() constGravatar Berthold Stoeger
Since this is an output function, the pointed-to value is not modified. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-03-27Cleanup: unconstify string argument to add_to_string()Gravatar Berthold Stoeger
add_to_string() frees the original string that is passed in. This should therefore not be of "const char *" type, as the contents of the string *will* be modified (or more precisely: destroyed). Same for the congener smtk_concat_str(). Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2018-10-21Add 'location_t' data structureGravatar Linus Torvalds
Instead of having people treat latitude and longitude as separate things, just add a 'location_t' data structure that contains both. Almost all cases want to always act on them together. This is really just prep-work for adding a few more locations that we track: I want to add a entry/exit location to each dive (independent of the dive site) because of how the Garmin Descent gives us the information (and hopefully, some day, other dive computers too). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-03-05Localization: Make Qt's locale-aware formatting accessible from CGravatar Berthold Stoeger
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>
2017-10-08Fix crash when text emptyGravatar Miika Turkia
Exporting to divelogs.de triggered this bug when divesite name is empty. Fixes #656 Signed-off-by: Miika Turkia <miika.turkia@gmail.com>
2017-04-29Add SPDX header to core C filesGravatar Dirk Hohndel
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2017-03-12Only enable -Wmissing-field-initializers for ClangGravatar Lubomir I. Ivanov
The following pragma is Clang specific: It produces a warning: warning: ignoring #pragma clang diagnostic [-Wunknown-pragmas] Only enable it for Clang by checking the __clang__ macro. Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2016-04-04Move subsurface-core to core and qt-mobile to mobile-widgetsGravatar Dirk Hohndel
Having subsurface-core as a directory name really messes with autocomplete and is obviously redundant. Simmilarly, qt-mobile caused an autocomplete conflict and also was inconsistent with the desktop-widget name for the directory containing the "other" UI. And while cleaning up the resulting change in the path name for include files, I decided to clean up those even more to make them consistent overall. This could have been handled in more commits, but since this requires a make clean before the build, it seemed more sensible to do it all in one. Signed-off-by: Dirk Hohndel <dirk@hohndel.org>