Commit graph

98 commits

Author SHA1 Message Date
Linus Torvalds
e33680c336 git access: add proper cleanup function for git_info
We had various random "free parts of the git info" left-overs from when
we passed down the git repo data ad-hoc.  Get rid of it, and replace it
with just doing a 'cleanup_git_info()' that does the final cleanup of it
all.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-04-22 08:28:17 -07:00
Linus Torvalds
7e632173e0 Collect and convert git repo data to 'struct git_info'
We have this nasty habit of randomly passing down all the different
things that we use to look up the local and remote git repository, and
the information associated with it.

Start collecting the data into a 'struct git_info' instead, so that it
is easier to manage, and easier and more logical to just look up
different parts of the puzzle.

This is a fairly mechanical conversion, but has moved all the basic
information collection to the 'is_git_repository()' function.  That
function no longer actually opens the repository (so the 'dry_run'
argument is gone, and instead a successful 'is_git_repository()' is
followed by 'opn_git_repository()' if you actually want the old
non-dry_run semantics.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2022-04-17 22:14:34 -07:00
Berthold Stoeger
9e0712d5dc core: replace dive master by dive guide
In general, replace "dive master" by "dive guide".

However, do not change written dive logs for now. On reading,
accept both versions.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2022-02-15 09:35:43 -08:00
Dirk Hohndel
31e688ec00 core: load and save fingerprint to cloud storage
Very similar structure to the XML format. Raw data is again saved as a
hex string (which implicitly provides us with its length). The rest of
components are in a more human readable format.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2021-11-12 12:45:22 -08:00
Linus Torvalds
6c4e890960 Clean up divecomputer 'device' handling
We have this odd legacy notion of a divecomputer 'device', that was
originally just basically the libdivecomputer 'EVENT_DEVINFO' report
that was associated with each dive.  So it had firmware version,
deviceid, and serial number.

It had also gotten extended to do 'nickname' handling, and it was all
confusing, ugly and bad.  It was particularly bad because it wasn't
actually a 'per device' thing at all: due to the firmware field, a dive
computer that got a firmware update forced a new 'device'.

To make matters worse, the 'deviceid' was also almost random, because
we've calculated it a couple of different ways, and libdivecomputer
itself has changed how the legacy 32-bit 'serial number' is expressed.

Finally, because of all these issues, we didn't even try to make the
thing unique, so it really ended up being a random snapshot of the state
of the dive computer at the time of a dive, and sometimes we'd pick one,
and sometimes another, since they weren't really well-defined.

So get rid of all this confusion.

The new rules:

 - the actual random dive computer state at the time of a dive is kept
   in the dive data. So if you want to know the firmware version, it
   should be in the 'extra data'

 - the only serial number that matters is the string one in the extra
   data, because that's the one that actually matches what the dive
   computer reports, and isn't some random 32-bit integer with ambiguous
   formatting.

 - the 'device id' - the thing we match with (together with the model
   name, eg "Suunto EON Steel") is purely a hash of the real serial
   number.

   The device ID that libdivecomputer reports in EVENT_DEVINFO is
   ignored, as is the device ID we've saved in the XML or git files. If
   we have a serial number, the device ID will be uniquely associated
   with that serial number, and if we don't have one, the device ID will
   be zero (for 'match anything').

   So now 'deviceid' is literally just a shorthand for the serial number
   string, and the two are joined at the hip.

 - the 'device' managament is _only_ used to track devices that have
   serial numbers _and_ nicknames. So no more different device
   structures just because one had a nickname and the other didn't etc.

   Without a serial number, the device is 'anonymous' and fundamentally
   cannot be distinguished from other devices of the same model, so a
   nickname is meaningless. And without a nickname, there is no point in
   creating a device data structure, since all the data is in the dive
   itself and the device structure wouldn't add any value..

These rules mean that we no longer have ambiguous 'device' structures,
and we can never have duplicates that can confuse us.

This does mean that you can't give a nickname to a device that cannot be
uniquely identified with a serial number, but those are happily fairly
rare (and mostly older ones).  Dirk said he'd look at what it takes to
give more dive computers proper serial numbers, and I already did it for
the Garmin Descent family yesterday.

(Honesty in advertizing: right now you can't add a nickname to a dive
computer that doesn't already have one, because such a dive computer
will not have a device structure.  But that's a UI issue, and I'll sort
that out separately)

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-08-18 13:22:02 -07:00
Berthold Stoeger
361678dcbe parser: don't create samples with invalid cylinder ids
By default, the parser would create samples with cylinder
ids 0 and 1. This creates out-of-bound accesses for the
common one-cylinder (or even no-cylinder) dives. These
were harmless when the cylinder-table was of a fixed size.
Since changing to a dynamic cylinder-table, these became
actual out-of-bound accesses. Don't create such samples
in the parser.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-07-19 10:13:51 -07:00
Dirk Hohndel
194fe28d50 cleanup: don't hardcode array length
Move the ARRAY_SIZE macro into a header file and use it to determine the
number of cloud servers that we need to check.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2021-04-19 12:51:01 -07:00
Berthold Stoeger
0e196310f9 cleanup: split out divecomputer functions from dive.c
Since dive.c is so huge, split out divecomputer-related functions
into divecomputer.[c|h], sample.[c|h] and extradata.[c|h].

This does not give huge compile time improvements, since
struct dive contains a struct divecomputer and therefore
dive.h has to include divecomputer.h. However, it make things
distinctly more clear.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-10-25 13:59:52 -07:00
Berthold Stoeger
8212acc992 cleanup: break out event-related code into event.[c|h]
In an effort to reduce the size of dive.h and dive.c, break out
the event related functions. Moreover event-names were handled
by the profile-code, collect that also in the new source files.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-10-25 13:59:52 -07:00
Berthold Stoeger
8c65558b5c devices: create device nodes in parsers
So far, we added a non-global device table to the parser states.
Now, create device nodes in that table instead of in the global
table. Thus, on undo of dive-import, the new device nodes will
be removed.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-10-24 09:51:37 -07:00
Berthold Stoeger
255f561aff git: add device-table to git-parser-state
In analogy to the xml-parser add a device-table to git's parser-state.
Currently this is unused. In upcoming commits the git parser will
then be changed to add device nodes in this table instead of the
global device table. The long-term goal being to detach the
parsers from global state and to make dive-import fully undoable.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-10-24 09:51:37 -07:00
Berthold Stoeger
a7bbb6c1cc filter: remove filter_preset_table_t
We used a typedef "filter_preset_table_t" for the filter preset table,
because it is a "std::vector<filter_preset>". However, that is in
contrast to all the other global tables (dives, trips, sites) that we
have.

Therefore, turn this into a standard struct, which simply inherits
from "std::vector<filter_preset>". Note that while inheriting from
std::vector<> is generally not recommended, it is not a problem
here, because we don't modify it in any shape or form.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-10-17 09:04:20 -07:00
Berthold Stoeger
8549f24c91 core: add device_table parameter to device table functions
Instead of accessing the global device table directly, add a parameter
to all device-table accessing functions. This makes all places in
the code that access the global device table grep-able, which is
necessary to include the device-table code in the undo system.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-10-16 14:26:37 -07:00
Berthold Stoeger
1fcf4f891d filter: implement loading of filter presets from git repositories
This is mostly copy and paste of other git loading code. Sadly,
it adds a lot of state to the parser-state. I wish we could pass
different parser states to the parser_* functions.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-09-29 16:13:03 -07:00
Berthold Stoeger
7f1def8602 cleanup: use taxonomy_set_category() function
Instead of manipulating the taxonomy structures directly, use the
taxonomy_set_category() function. This improves encapsulation and
gives us the possibility to improve the taxonomy data structures.

This concerns three places:
1) git parser
2) XML parser
3) reverse geo-lookup

This improves the XML parser code slightly: The parser assumes that
the value-attribute comes last (after origin and category). While
it still does that, it now at least generates a warning if it encounters
a value-attribute without origin- or category-attribute.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-09-06 12:59:54 -07:00
Linus Torvalds
cdfcb7f896 Remove 'string marker after running out of strings' warning
This warning is unnecessarily scary - we had a problem with parsing
multiple strings on the same line, but it should be all solved, and
while it does mean that people may have old incorrect git save files
with empty strings, scaring users about it isn't going to help.

And with the warning removed, we can just remove the whole test for an
empty string, because the normal code sequence handles that case just
fine.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-05-12 11:36:59 -07:00
Berthold Stoeger
989d6a3f96 media: use table instead of linked list for media
For consistency with equipment, use our table macros for pictures.
Generally tables (arrays) are preferred over linked lists, because
they allow random access.

This is mostly copy & paste of the equipment code.

Sadly, our table macros are quite messy and need some revamping.
Therefore, the resulting code is likewise somewhat messy.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-05-06 13:58:09 -07:00
Berthold Stoeger
9c70261c0e cleanup: move declaration of utc_mk* functions to new subsurface-time.h header
No point in slurping in all of dive.h for translation units that only
want to do some time manipulation without ever touching a dive.

Don't call the header "time.h", because we don't want to end up in a
confusion with the system header of the same name.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-05-01 09:42:31 -07:00
Berthold Stoeger
95284c026e cleanup: move dive_table from dive.h to divelist.h
This allows us to decouple dive.h and divelist.h, a small step in
include disentangling.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-05-01 09:42:31 -07:00
Berthold Stoeger
b949bad026 core: always keep an empty cylinder at the end of the cylinder array
This will be temporarilly used by the planner to mark consumption of
air at the surface. Do this by creating a new function add_cylinder,
which replaces add_to_cylinder_table() and takes care of always adding
a dummy cylinder at the end of the table. Make the original
add_to_cylinder_table() local, so that it cannot be accessed anymore.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-05-01 12:36:28 +02:00
Dirk Hohndel
f9f4a9c232 debug output: ensure our debug output is captured on Android
I would have bet money that Android used to send stderr to the logcat
log, but apparently it doesn't (anymore?). So in order to be able to
have a chance to debug weird cloud storage issues on Android, let's do
some wholesale replacement of fprintf(stderr,...) with our own version
of the INFO macro that we long ago borrowed from libdivecomputer (and
rename it to ensure we don't have a conflict there).

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2020-04-18 09:00:21 -07:00
Robert C. Helling
1690ba7c0c Fix compiler warning about variable length field not last in struct.
Signed-off-by: Robert C. Helling <helling@atdotde.de>
2020-04-13 09:42:29 +02:00
Berthold Stoeger
3f3869ff65 media: move picture function from dive.c to picture.c
Currently, move only those functions that do not access dive
structures.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-04-10 10:53:03 -07:00
Berthold Stoeger
d5e6a65944 cleanup: copy saved_git_id, don't use local buffer
In an attempt to reduce the number of global variables, don't use
a local buffer to store the currently loaded git-id. The git-id
itself is still a global variable, which in the future can hopefully
be encapsulated in a "struct File" or similar.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-04-04 10:13:14 -07:00
Berthold Stoeger
329641fdcd Core: introduce invalid flag for dives
Implement reading/writing the flag from/to XML/git.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-03-20 15:20:44 -07:00
Berthold Stoeger
ed3e68c36a git: load into arbitrary dive tables
The git parser loads into the global dive table, even if it
is called indirectly via parse_file(). However, parse_file()
may be given a different table. Fix this by extending the
git parser state.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-03-17 16:50:20 -07:00
Berthold Stoeger
71f573da2a git: return strdup()ed empty string on error in pop_cstring
The pop_cstring() function is used by the git parser to
duplicate a quoted string. On error, it returns an empty
string literal. Since the caller expects a copied string
and takes ownership of that string, it will ultimately
be freed.

Concrete example: a log with erroneous cylinder data was opened
getting such an empty string literal as description. On closing or
syncing with the cloud, the dive is freed, leading to a free
of the string literal -> crash.

Return a copy of the empty string instead.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-03-16 10:57:12 -07:00
Linus Torvalds
66a2b2e133 load-git: fix up any corrupted modechange event names
Because of the multiple string confusion, we'd get the names wrong for
modechange events.  If we then made other changes to the dive and saved
the end result back, they'd now be wrong in the git cloud storage too.

Fix it up manually by just noticing that there's a 'divemode' string on
the event line, which can only happen with modechange events.

Maybe we should report the fixup? This just silently fixes it (but only
for the git save format).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-02-15 10:12:35 +01:00
Linus Torvalds
a9112e6e05 load-git: clean up string handling during parsing
We had some fairly obscure rules for how strings were parsed, and it
actually caused bugs when the same line had multiple strings in it.

That normally doesn't happen, and the cases where it was _supposed_ to
happen had special cases for it (divecomputer ID lines, and tag lines).

But by mistake, we had introduced a case of that for the event line
handling in commit b9174332d ("Read and write divemode changes (xml and
git)"), and nobody realized that the divemode string addition meant that
"oops, now it's corrupting the event name".  An event line could look
like this:

     event 40:00 type=8 divemode="OC" name="modechange"

where we now had both that "OC" and "modechange" strings, and the code
to pick the name just picked the first string.  So we'd end up
effectively mis-parsing the above line as

     event 40:00 type=8 divemode="OC" name="OC"

which is obviously wrong.

The dive mode didn't really need to be a string in the first place
(there is nothing to quote, and no spaces in it), but hey, here we are.
We can't just magially fix the existing broken saves.

So make it more straightforward to handle strings in the git format line
parser.  We still stash the different decoded strings together in one
special memory buffer, but now the parser helpers automatically untangle
it as they traverse the key value pairs.

This is still overly subtle code, and it doesn't fix the cases where
we've saved the wrong data back. That comes later.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-02-15 10:12:35 +01:00
Dirk Hohndel
cef30619d0 code cleanup: introduce empty_cylinder constant
This deals with the issue of initializing structs in C++.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2020-01-10 02:37:03 +09:00
willemferguson
d2cf58e07e core: read and write the user-specified salinity
Both XML and git storage are added.

Signed-off-by: willemferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2020-01-06 07:00:34 +09:00
willemferguson
9006e3d102 Desktop: add additional star widgets to Information tab
Provide file I/O for those star widgets that are enabled. The values of the
widgets can be stored to and read from either xml or git.

Signed-off-by: willemferguson <willemferguson@zoology.up.ac.za>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2019-12-03 20:37:57 -08:00
Berthold Stoeger
7c9f46acd2 Core: remove MAX_CYLINDERS restriction
Instead of using fixed size arrays, use a new cylinder_table structure.
The code copies the weightsystem code, but is significantly more complex
because cylinders are such an integral part of the core.

Two functions to access the cylinders were added:
get_cylinder() and get_or_create_cylinder()
The former does a simple array access and supposes that the cylinder
exists. The latter is used by the parser(s) and if a cylinder with
the given id does not exist, cylinders up to that id are generated.

One point will make C programmers cringe: the cylinder structure is
passed by value. This is due to the way the table-macros work. A
refactoring of the table macros is planned. It has to be noted that
the size of a cylinder_t is 64 bytes, i.e. 8 long words on a 64-bit
architecture, so passing on the stack is probably not even significantly
slower than passing as reference.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-11-09 19:19:04 +01:00
Berthold Stoeger
5da09a21bb Cleanup: move error reporting function declarations to errorhelper.h
Move the declarations of the "report_error()" and "set_error_cb()"
functions and the "verbose" variable to errorhelper.h.
Thus, error-reporting translation units don't have to import the
big dive.h header file.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-08-08 16:26:30 -07:00
Berthold Stoeger
ba4d6ae627 Cleanup: use clear_git_id() instead of setting saved_git_id
For better encapsulation, use clear_git_id() in clear_dive_file_data()
instead of setting saved_git_id directly.

Thus, memory management of the saved_git_id value is encapsulated
and can be modified more easily.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-08-04 16:22:19 -07:00
Berthold Stoeger
891d21b34e Coding style: add spaces in load-git.c
Add spaces before and after multiplication and addition operators.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-08-04 16:22:19 -07:00
Berthold Stoeger
3fe80bfd79 Git: Make parser reentrant
The git parser was using a number of global static variables. Remove
them by introducing a parser state, which is passed down to the
call hierarchy.

Advantages:
1) Removes global variables and makes the parser (mostly) reentrant.
2) More flexible - e.g. when parsing samples, the parser can now
   access the dive to check if the cylinder number is valid.
3) Less weak typing through "void *".

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-08-04 16:22:19 -07:00
Berthold Stoeger
f756dcbf94 Cleanup: make functions in core/load-git.c local
The function get_divemode() and git_tree_entry_blob() were not used
outside of load-git.c. Make them of static linkage.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-08-04 16:22:19 -07:00
Berthold Stoeger
a5e7f4253a Core: dynamically resize weight table
Replace the fixed-size weightsystem table by a dynamically
relocated table. Reuse the table-macros used in other parts
of the code.

The table stores weightsystem entries, not pointers to
weightsystems. Thus, ownership of the description string is
taken when adding a weightsystem. An extra function adds
a cloned weightsystem at the end of the table.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-07-18 06:01:07 -07:00
Berthold Stoeger
9eb860d45d Git: handle excess of cylinders or weightsystems gracefully
Currently, the git parser happily trashes memory if a git repository
contains too many weightsystems or cylinders. This should only happen
in testing, but nevertheless try to handle it gracefully and ignore
excess cylinders / weightsystems.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-07-10 05:11:47 +03:00
Berthold Stoeger
7f4d9db962 Cleanup: move trip-related functions into own translation unit
These functions were spread out over dive.c and divelist.c.
Move them into their own file to make all this a bit less monolithic.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-06-19 13:11:10 -07:00
Berthold Stoeger
6200909ba4 Cleanup: move tag functions into own translation unit
Make dive.h a bit slimmer. It's only a drop in the bucket - but at
least when modifying tag functions not the *whole* application is
rebuilt anymore.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-06-19 13:11:10 -07:00
willemferguson
1bdf00b2b4 Convert the atmospheric pressure in the Information Tab to an editable field
The Information tab shows the atmospheric pressure. Make this value editable
and also ensure that changes to it are undo-able.

Signed-off-by: willemferguson <willemferguson@zoology.up.ac.za>
2019-05-15 07:37:14 -07:00
Berthold Stoeger
6586ba5579 Cleanup: move parse_location() declaration into header file
The parse_location() function was used in three places. In two
of them, the declaration was in the translation unit. Instead,
move the declaration into a header file, to avoid duplication
and the possibility of inconsistencies.

The "units.h" header was chosen as this is where location_t
is defined.

Moreover, make the string argument to parse_location() "const
char *", so that it can be used on non-owned buffers.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-05-11 12:35:11 -07:00
Berthold Stoeger
e2df38d868 Dive site: add dive site ref-counting
Instead of setting dive->dive_site directly, call the
add_dive_to_dive_site() and unregister_dive_from_dive_site()
functions. In the parser this turned out to be a bit tricky.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-04-12 18:19:07 +03:00
Berthold Stoeger
c22fd9f4fd Dive sites: prepare for dive site ref-counting
Add a dive site table to each dive site to keep track of dives
that have been added to a dive site. Add two functions to add
dives to / remove dives from dive sites.

Since dive sites now contain a dive table, the order of includes
had to be changed: "divesite.h" now includes "dive.h" and not
vice-versa. This caused some include churn.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-04-12 18:19:07 +03:00
Berthold Stoeger
31291b1c56 Dive site: set UUID only on save or load
Since the UUID will be overwritten on save and is only used on save
and load, set it only on save or load. For other created dive sites,
leave the UUID field uninitialized.

This means that the UUID will change between saves. Let's see how
the git saver handles that.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-04-12 18:19:07 +03:00
Berthold Stoeger
f6e7bdc5ef Dive site: add dive site table parameter to dive site functions
To enable undo of dive site functions, it is crucial to work
with different dive site tables. Therefore add a dive site table
parameter to dive site functions. For now, always pass the global
dive site table. Thus, this commit shouldn't alter any functionality.

After this change, a simple search for dive_site_table reveals all
places where the global dive site table is accessed.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-04-12 18:19:07 +03:00
Berthold Stoeger
40a3e562b0 Cleanup: provide printGPSCoords in C and C++ versions
printGPSCoords() returned a newly allocated C-style string. Most
callers simply made a QString out of it and freed the C-style string.
This is paradoxical, as printGPSCoords internally works with QStrings
and converts them to C-style on return.

Therefore, let printGPSCoords() return a QString and create a
printGPSCoordsC() wrapper for the two C-callers.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-03-27 13:58:15 +01:00
Berthold Stoeger
04593e8ec4 Cleanup: fix printGPSCoords signature and leaks
The printGPSCoords() function returns a copied C-style string. Since
the owndership is transferred to the caller, the correct return type
is "char *" instead of "const char *".

Thus a number of casts when calling free can be removed.

Moreover a number of callers didn't free the string and thus were
leaking memory. Fix them. Ultimately we might want two versions
of the function: one for QString, one for C-style strings.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2019-03-24 21:57:13 -07:00