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2017-05-27vis-lua: avoid nil values in table returned by vis:mappingMarc André Tanner1-1/+2
Also fix compilation with ./configure --disable-help.
2017-05-27vis-lua: expose functions to unmap key bindingsMarc André Tanner1-0/+40
2017-05-27vis-lua: expose currently active key bindings through APIMarc André Tanner1-0/+38
Close #563
2017-05-03text: remove text_insert_newline functionMarc André Tanner1-2/+2
This is no longer needed because we always insert \n never \r\n.
2017-04-20vis: start cleaning up register related codeMarc André Tanner1-3/+1
Now that register.h is no longer used by view.h we can move the struct and function declarations to vis-core.h.
2017-04-09vis: remove handling of \r\n line endingsMarc André Tanner1-22/+0
Use something like dos2unix(1) and unix2dos(1), if you need to edit such files.
2017-03-25Merge branch 'master' of https://github.com/joshaw/visMarc André Tanner1-1/+10
2017-03-24vis: properly redraw status bar of windows displaying internal filesMarc André Tanner1-3/+3
Currently the only "internal window" with a status bar is the information window used to display Lua stack traces. We do not want to trigger events for it, because that could result in further Lua errors. Nonetheless its status bar should be properly redrawn to avoid display artifacts. That is why we fall back to the built-in default status bar as used by non-Lua builds.
2017-03-24vis-lua: register a panic handlerMarc André Tanner1-1/+31
The intention here is to catch any errors in unprotected mode, close the lua state and jump back to the mainloop to give the user the opportunity to take care of unsaved changes. We abuse the infrastructure Lua provides for custom memory allocators to associate our vis instance pointer with the lua state. In the panic handler we can then use lua_getallocf to get our context back. The actual memory allocater is equivalent to the one used by default and just forwards everything to the libc.
2017-03-24vis-lua: use better name for error handling functionMarc André Tanner1-2/+2
2017-03-24vis-lua: adjust return value validation of called lua functionsMarc André Tanner1-3/+7
While the invoked Lua functions are executed in protected mode, the validation of the return values currently happens in unprotected mode. Thus an invaid return value triggers a lua error and because we currently do not have a global panic handler registered this will terminate the editor process. This commit changes the return value validation to silently fall back to default values instead of raising errors. If we want to provide user friendly stack traces showing the origin of the offending value we would have to move the validation into the Lua code.
2017-03-24vis-lua: validate lua state on vis API entry pointsMarc André Tanner1-9/+27
2017-03-22vis-lua: add usage documentation to command_registerJosh Wainwright1-1/+10
2017-03-19vis-lua: allow operators to be defined as lua functionsMarc André Tanner1-0/+62
2017-03-19Move :set horizon option implementaiton to luaMarc André Tanner1-5/+3
2017-03-19Move :set theme option implementation to luaMarc André Tanner1-19/+0
2017-03-19Move :set syntax option implementation to luaMarc André Tanner1-55/+1
It is no longer possible to change the used syntax by assigning to the `win.syntax = name` field, instead the function win:set_syntax(name)` should be called. The distinction between filetype and syntax lexer to use should probably be clarified/cleaned up at some point.
2017-03-19vis-lua: make vis.win return nil if no window exists yetMarc André Tanner1-2/+4
This is only the case during editor startup before the first window is created.
2017-03-19vis-lua: expose option_unregister functionMarc André Tanner1-0/+16
2017-03-19vis-lua: expose option_register functionMarc André Tanner1-0/+54
2017-03-14Restructure display codeMarc André Tanner1-0/+5
Use pull instead of push based model for display code. Previously view.c was calling into the ui frontend code, with the new scheme this switches around: the necessary data is fetched by the ui as necessary. The UI independent display code is moved out of view.c/ui-curses.c into vis.c. The cell styles are now directly embedded into the Cell struct. New UI styles are introduced for: - status bar (focused / non-focused) - info message - window separator - EOF symbol You will have to update your color themes. The terminal output code is further abstracted into a generic ui-terminal.c part which keeps track of the whole in-memory cell matrix and #includes ui-terminal-curses.c for the actual terminal output. This architecture currently assumes that there are no overlapping windows. It will also allow non-curses based terminal user interfaces.
2017-03-07vis-lua: remove vis:open methodMarc André Tanner1-20/+0
The same functionality is available using vis:command and :open. If we decide a distinct API is useful, we should probably also provide a corresponding close method.
2017-03-05vis-lua: expose vis:pipe functionMarc André Tanner1-0/+35
2017-03-03vis-lua: add vis:exit functionMarc André Tanner1-0/+21
2017-03-02vis-lua: fix bogus URL in LDoc commentMarc André Tanner1-1/+1
2017-03-01vis-lua: fix invalid LDoc tagMarc André Tanner1-1/+1
2017-03-01vis-lua: make cursor.pos return nil if cursor position is invalidMarc André Tanner1-7/+12
It remains to be seen whether that is a good idea, but at least it will reveal possible bugs.
2017-03-01vis-lua: document cursor behaviorMarc André Tanner1-0/+50
2017-02-28vis-lua: correctly treat return value of input event handlerMarc André Tanner1-1/+1
Returning true from the event handler, indicating that the keys were consumed, should now prevent insertion as mentioned in the documentation. vis.events.subscribe(vis.events.INPUT, function(key) if key == ' ' then -- do something fancy here return true end end)
2017-02-28vis-lua: fix wrong return value when setting vis.countMarc André Tanner1-1/+1
2017-02-27vis-lua: make vis:win assignableAlexandre Rames1-0/+5
2017-02-23vis-lua: use shorter type namesMarc André Tanner1-10/+10
2017-02-23vis-lua: cleanup type checks by using #define'sMarc André Tanner1-68/+80
2017-02-23vis-lua: make vis:count assignableMarc André Tanner1-0/+10
2017-02-22vis-lua: expose current count specifier as vis:countMarc André Tanner1-0/+13
2017-02-22vis-lua: expose type meta tables through vis.typesMarc André Tanner1-5/+25
This should allow the Lua code to add new methods even if it has no existing object references.
2017-02-22lua: expose vis:module_exist method, load lexer and lpeg module during startupMarc André Tanner1-4/+6
2017-02-22vis-lua: check for nil return value of text object callbackMarc André Tanner1-1/+1
2017-02-02update comment and readme about lua pathChristian Hesse1-5/+5
Commit 3570869c removed the lexers sub directory from the Lua search path. Update the comment and readme to reflect this change.
2017-02-02add /etc/vis to lua path for system-wide configuration by administratorChristian Hesse1-0/+3
2017-01-27vis-lua: introduce vis:replace functionMarc André Tanner1-0/+20
2017-01-27vis-lua: introduce vis:insert functionMarc André Tanner1-0/+20
2017-01-15vis-lua: pass pending keys to lua key handling functionsMarc André Tanner1-8/+69
2017-01-14vis-lua: allow mode changes by setting vis.modeMarc André Tanner1-1/+14
2017-01-10vis-lua: expose register names as vis:register_names()Marc André Tanner1-1/+38
2017-01-10vis-lua: expose valid marks as vis:mark_names()Marc André Tanner1-0/+38
2016-12-31vis: allow user registered :-commands to specify a help textMarc André Tanner1-1/+3
2016-12-29vis-lua: allow vis:map to set up key aliases and actionsMarc André Tanner1-15/+51
2016-12-29vis-lua: introduce vis:action_registerMarc André Tanner1-0/+32
2016-12-29vis: cleanup key action lifetime managementMarc André Tanner1-13/+5
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