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* Factor out hash computationLukas Fleischer2017-09-081-7/+14
| | | | | | Move code to compute the hash of a data file to a separate function. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Use a shared input/output mutexLukas Fleischer2017-09-082-16/+23
| | | | | | | | | Replace the save mutex with a common mutex, which is locked whenever read or write operations on the data files are performed. Also, since this mutex is an implementation detail, mark the locking functions static and remove them from the header file. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Interrupt periodic save when launching processLukas Fleischer2017-09-081-0/+4
| | | | | | | | To avoid interactions between the periodic save thread and external processes, stop the periodic save thread before launching an external program and restart the thread as soon as the program is terminated. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Only reload if data files were changedLukas Fleischer2017-09-083-7/+15
| | | | | | | | Instead of blindly reloading data in io_reload_data(), compare the stored hashes of the data files with hashes of the current file contents and only reload if any of the hashes differs. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Factor out check for external modificationsLukas Fleischer2017-09-081-15/+20
| | | | | | | | Move the check to compare the stored hashes of the data files with the current hash to a separate function. This makes the code easier to read and reusable. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Do not blindly overwrite files when savingLukas Fleischer2017-09-081-0/+59
| | | | | | | | | When reading the data files, compute a cryptographic hash of the file contents and store it. When saving the files later, ensure that the hash still matches the current file contents. If it does not, show a warning to the user and ask whether she wants to execute the merge tool. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Use .new as file extension when mergingLukas Fleischer2017-09-081-15/+15
| | | | | | | | Using the file name extension .sav and naming the variables "backup" is slightly misleading, since the affected files actually contain the updated content and not some old snapshot. Use the term "new" instead. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Factor out merge routineLukas Fleischer2017-09-081-48/+44
| | | | | | | Move the code, which runs the merge tool with current and updated data files, to a separate function to make it reusable. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Add CALCURSE_{EDITOR,PAGER,MERGETOOL} environment variablesLukas Fleischer2017-09-081-3/+9
| | | | | | | Support environment variables specific to calcurse to override $EDITOR, $PAGER and $MERGETOOL. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Make the day heading position configurableLars Henriksen2017-09-085-2/+62
| | | | | | | | | The date at the top of the appointments list may be positioned either to the left, in the middle or to the right. Default is to the right. Can be configured from the general options menu. Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Remove phase of moon featureLars Henriksen2017-09-084-185/+2
| | | | | | | | | | The computation never really worked before and it seems like the feature is not very helpful, sometimes even confusing (see GitHub issue #21). The macro ISLEAP is moved to calcurse.h. Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Fix phase of moon calculationLars Henriksen2017-09-081-27/+30
| | | | | | | | | | | | The reported phase was often one day early because calculations were based on midnight. For full and new moon this is changed to noon. For first and last quarter a direct check of the appearance of the half moon during the selected day is performed. Comments are relocated and expanded. Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Add missing string initializationLars Henriksen2017-09-041-0/+1
| | | | | | | | | | | When introducing the fmt_day_heading() function in commit d56cc7a (Make heading in appointments panel configurable, 2017-08-19), we forgot to initialize the dynamic string. This resulted in calling mem_free() with a garbage pointer, potentially resulting in a segmentation fault. Fix this by calling string_init() before using the string. Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Replace remaining uses of wgetch() by keys_wgetch()Lukas Fleischer2017-09-033-3/+3
| | | | Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Add a function to wait for any key pressLukas Fleischer2017-09-037-26/+32
| | | | | | | Introduce a new function keys_wait_for_any_key() and use it instead of wgetch() whenever the return value is discarded. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Improve default selection when editing key bindingsLukas Fleischer2017-09-031-4/+4
| | | | | | | | When adding a new key binding, automatically select the new binding. When removing a key binding, keep the selection index (unless the last binding of a row is removed). Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Use strncpy() properly in general_option_edit()Lukas Fleischer2017-09-031-6/+8
| | | | | | | Always use strncpy() to copy strings between fixed-size buffers and pass the buffer size as maximal length parameter. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Add support for UTF-8 key bindingsLukas Fleischer2017-08-303-30/+112
| | | | | | | | | | | | | | | | A new function keys_wgetch() reads full UTF-8 characters instead of single ASCII characters only. Key bindings for regular ASCII characters are stored in a hash map while the actions of keys with higher code points are stored in a linked list for space efficiency. The key serialization methods are updated to handle UTF-8 characters as well; extended UTF-8 characters (characters not in the ASCII range) are serialized by using the hexadecimal representation of the corresponding code points (e.g. "U+00E4"). Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Rename keys_getch() to keys_get()Lukas Fleischer2017-08-305-34/+29
| | | | Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Factor out UTF-8 code point decodingLukas Fleischer2017-08-302-16/+16
| | | | Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Relocate HANDLE_KEY macrosLukas Fleischer2017-08-301-46/+44
| | | | Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Implement CTRL-U in getstring()Quentin Hibon2017-08-291-1/+7
| | | | Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Use nl_langinfo() for month and day namesLars Henriksen2017-08-283-35/+8
| | | | | | | | Use the locale setting to fetch the month names and abbreviated day names. Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Remove extra star from recurrent appointmentsLars Henriksen2017-08-281-2/+1
| | | | | | | | | | | In the appointments panel, an appointment has a '-' to mark the time span, and the description on the following line is slightly indented. When the appointment is changed into a recurrent one, the '-' is changed to a '*', making it easily distinguishable but the description also gets a '*', thus breaking the pattern. Drop the extra '*'. Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Remove some leftovers from the pastLars Henriksen2017-08-281-7/+0
| | | | | Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Make heading in appointments panel configurableLars Henriksen2017-08-285-7/+40
| | | | | | | | Add a new configuration variable format.dayheading to set the format of the date displayed at the top of the event and appointment list. Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Extend strings API for formatted datesLukas Fleischer2017-08-282-0/+22
| | | | | | | | Add two new functions string_catftime(), resp. string_strftime(), which can be used to append, resp. print, a formatted date to a dynamic string. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Make the selected day in the calendar stand outLars Henriksen2017-08-282-3/+3
| | | | | Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Fix support for punctual appointments at 00:00Lukas Fleischer2017-08-281-2/+3
| | | | | | | | | | | | | | When checking whether an appointment belongs to a given day in apoint_inday(), the return value was 0 if the end time of the appointment matched 00:00 on that day (because we do not want to include appointments starting on the day before and lasting until midnight). However, this means that punctual appointments at 00:00 were not included in any day. Fix the apoint_inday() logic to take this into consideration. Fixes GitHub issue #39. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Fix empty warning box when key is already in useLars Henriksen2017-08-121-0/+2
| | | | | | | | | | | | When adding a key already in use for another action, a warning box is displayed. The text length is limited by the window width through the use of strncpy(). If the limit is exceeded, the string will have no null termination, resulting in unpredictable behaviour. A similar problem in fatalbox() is fixed as well. Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Fix fatal error when using the help commandLars Henriksen2017-08-121-5/+6
| | | | | | | Check that an action is defined for the key. Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Check for optional argument to -s optionLars Henriksen2017-08-121-0/+2
| | | | | Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Include stdarg.h when using variable argument listsLukas Fleischer2017-07-283-0/+4
| | | | | | Fixes GitHub issue #36. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Fix segmentation fault when changing colorsLukas Fleischer2017-07-281-3/+3
| | | | | | | | | | | | | | | | The pair_content() function can be used to retrieve a color pair. The foreground and the background color numbers are written to addresses specified by the second and third parameters. While both parameters were optional in older ncurses implementations (making it possible to pass NULL pointers if the one does not care about either foreground or background color), recent implementations seem to assume that both parameters are valid pointers. Thus, instead of passing NULL, we need to pass a pointer to a dummy variable when we do not care about the background color. Partly fixes GitHub issue #31. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Fix another error in the notification codeLukas Fleischer2017-02-111-1/+6
| | | | | | | | | | In addition to checking whether a recurrent item predates the current next appointment, we need to check that the actual occurrence of the item predates the current appointment as well. Fixes GitHub issue #26. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Fix notification of recurrent appointmentsLukas Fleischer2017-02-091-2/+8
| | | | | | | | | | | | | | | The recur_apoint_starts_before() filter function expected the second parameter to be passed by value, whereas its only caller passed the value by reference. For consistency with apoint_starts_after(), change the signature and the implementation of recur_apoint_starts_before() such that the parameter is passed by reference. Also, add a comment to the only caller of recur_apoint_starts_before() to clarify on why recur_apoint_starts_before() is used. Fixes GitHub issue #25. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Do not read past NUL character in ical_get_value()Lukas Fleischer2017-02-081-2/+2
| | | | | | | Make sure we never read beyond the end of the buffer, even if the terminating quote of a quoted string is missing. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Gracefully parse iCal parameters with colonsLukas Fleischer2017-02-071-12/+24
| | | | | | | | | | | | According to RFC 5545, iCalendar content lines can have optional parameters, which can be quoted strings containing colons (":"). Make sure that such colons are not interpreted as delimiters marking the start of the value string. Also, add a test case that covers this corner case. Reported-by: Håkan Jerning <jerning@home.se> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Update copyright rangesLukas Fleischer2017-01-1239-40/+40
| | | | Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Fix visible region after loading list box itemsLukas Fleischer2016-10-301-0/+1
| | | | | | | | Make sure the visible region is updated after loading items, e.g. when the users switches from the full todo list to the "uncompleted items only" view. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Fix listbox_fix_visible_region()Lukas Fleischer2016-10-301-22/+20
| | | | | | | | | Make sure that listbox_fix_visible_region() always updates the visible region to show the entire list if it fits into the box. Also, reuse listbox_fix_visible_region() in listbox_resize() instead of duplicating the code. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Do not start the daemon more than onceLukas Fleischer2016-10-191-0/+1
| | | | | | | | | Avoid starting multiple daemon instances if the --daemon argument is passed and the daemon is already running. Terminate the already running instance before spawning a new one instead. Suggested-by: Vlad Glagolev <scm@vaygr.net> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Prevent segfault when all todo items are hiddenLukas Fleischer2016-10-142-21/+28
| | | | | | | | | | | | | | | | | To prevent from illegal memory access, we checked whether the list of todo items is empty before performing an interactive todo item action such as flagging or removal. However, since 1a4bf2b (Add a "hide completed" view to the todo panel, 2016-01-17), it is possible to hide completed items from the todo panel. Thus, it may occur that the todo list box is empty while the list of todo items is not. To detect such situations as well, teach todo_get_item() to return NULL if the requested item does not exist. Then, instead of checking whether the todo item list is non-empty, make sure that the item returned by todo_get_item() is non-NULL when performing an action. Reported-by: Vlad Glagolev <scm@vaygr.net> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Always use memory management wrappersLukas Fleischer2016-10-137-18/+18
| | | | | | | Use mem_*() wrappers instead of directly accessing libc functions when allocating/deallocating memory. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Prevent free-before-init of timstrVlad Glagolev2016-10-131-1/+1
| | | | | | | | Fixes a crash when editing the repetition of an appointment and passing an empty repetition value. Signed-off-by: Vlad Glagolev <scm@vaygr.net> Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Replace parse_datetime() constants by named flagsLukas Fleischer2016-10-103-5/+9
| | | | | | | Remove the magic constants used in the return value of parse_datetime() and use named flags instead. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Refactor duration/end time parsingLukas Fleischer2016-10-101-35/+39
| | | | | | | Replace all remaining invocations of parse_time() by parse_datetime() which now indicates whether a date was supplied or not. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Support dates when specifying start/end timesLukas Fleischer2016-10-092-32/+33
| | | | | | | | | | Add support for combined date/time or date-only strings when specifying the start or end time of a new item. This is a follow-up to 1f39b5c (Add support for moving items to another day, 2016-09-30). Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Factor out parse_datetime()Lukas Fleischer2016-10-093-25/+45
| | | | | | | | Create a new function that takes a time stamp and updates the date or time components of that time stamp according to a given date/time string. Use that function for updating the start time of an item. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
* Add support for moving items to another dayLukas Fleischer2016-10-081-11/+27
| | | | | | | | | | | | | When moving an item (or when changing the start time of an item), allow for optionally specifying a date. If both date and time are entered, the item is updated to start on the given date and time. If only a date is entered, the item is modified to start on the given date, keeping the current start time. If only a time is entered, the item is modified to start on the current date and the new start time. Fixes GitHub issue #12. Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
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