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authorWilliam Wilgus <wilgus.william@gmail.com>2021-05-01 08:42:28 -0400
committerWilliam Wilgus <me.theuser@yahoo.com>2021-05-04 01:52:08 +0000
commit489a5f3ff72802fac20ca7459620101cd263bd1a (patch)
tree9410ca4697575cfc67a698d072aa8dd61245c833 /apps/plugins/lua
parent4f83e66cd4e00bfa225f54b2c314a3d42d09ca7a (diff)
downloadrockbox-489a5f3ff72802fac20ca7459620101cd263bd1a.tar.gz
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lua add ability to use custom kbd layouts
bring custom keyboard layouts to lua conversion to the proper format requires create_kbd_layout.lua just pass a lua string with your desired layout Change-Id: I14a392410846311a4f3cf8dda0e88d39834d0418
Diffstat (limited to 'apps/plugins/lua')
-rw-r--r--apps/plugins/lua/include_lua/create_kbd_layout.lua81
-rw-r--r--apps/plugins/lua/lua.make2
-rw-r--r--apps/plugins/lua/rocklib.c12
3 files changed, 93 insertions, 2 deletions
diff --git a/apps/plugins/lua/include_lua/create_kbd_layout.lua b/apps/plugins/lua/include_lua/create_kbd_layout.lua
new file mode 100644
index 0000000000..bb3ab297ca
--- /dev/null
+++ b/apps/plugins/lua/include_lua/create_kbd_layout.lua
@@ -0,0 +1,81 @@
+--create keyboard layout
+--BILGUS 4/2021
+local function encode_short(n)
+ return string.char(bit.band(0x00FF, n), bit.rshift(bit.band(0xFF00, n), 8))
+end
+
+function utf8decode(str)
+ local INVALID = 0xfffd
+ local t = {}
+ local function check_char(c)
+ local tail = false
+ local code
+ c = string.byte(c)
+ if (c <= 0x7f) or (c >= 0xc2) then
+ -- Start of new character
+ if (c < 0x80) then -- U-00000000 - U-0000007F, 1 string.byte
+ code = c;
+ elseif (c < 0xe0) then -- U-00000080 - U-000007FF, 2 string.bytes
+ tail = 1;
+ code = bit.band(c, 0x1f)
+ elseif (c < 0xf0) then -- U-00000800 - U-0000FFFF, 3 string.bytes
+ tail = 2;
+ code = bit.band(c, 0x0f)
+ elseif (c < 0xf5) then -- U-00010000 - U-001FFFFF, 4 string.bytes
+ tail = 3;
+ code = bit.band(c, 0x07)
+ else
+ -- Invalid size
+ code = 0xfffd;
+ end
+
+ while tail and c ~= 0 do
+ tail = tail - 1
+ if bit.band(c, 0xc0) == 0x80 then
+ -- Valid continuation character
+ code = bit.bor(bit.lshift(code, 6),bit.band(c, 0x3f))
+ else
+ -- Invalid continuation char
+ code = INVALID;
+ break;
+ end
+ end
+ else
+ -- Invalid UTF-8 char
+ code = INVALID;
+ end
+ -- currently we don't support chars above U-FFFF
+ t[#t + 1 ] = encode_short((code < 0x10000) and code or 0xfffd)
+ end
+ str:gsub(".", check_char) -- run check function for every char
+ return table.concat(t)
+end
+
+function create_keyboard_layout(s_layout)
+ local insert = table.insert
+ lines = {}
+
+ local t={}
+ for str in string.gmatch(s_layout, "([^\n]+)") do
+ local len = string.len(str)
+ lines[#lines + 1] =
+ table.concat({encode_short(len), utf8decode(str)})
+ end
+ lines[#lines + 1] = encode_short(0xFEFF)
+
+ return table.concat(lines)
+end
+
+--[[
+local name = "Test_KBD_LAYOUT_" .. tostring(1)
+local test = create_keyboard_layout("ABCDEFGHIJKLM\nNOPQRSTUVWXYZ\n0123456789")
+local file = io.open('/' .. name, "w+") -- overwrite, rb ignores the 'b' flag
+file:write(test)-- write the layout to the file now
+file:close()
+
+if not file then
+ rb.splash(rb.HZ, "Error opening /" .. name)
+ return
+end
+rb.kbd_input(name, test)
+]]
diff --git a/apps/plugins/lua/lua.make b/apps/plugins/lua/lua.make
index f6dba72aed..eada6b370f 100644
--- a/apps/plugins/lua/lua.make
+++ b/apps/plugins/lua/lua.make
@@ -22,7 +22,7 @@ LUA_INCLUDELIST := $(addprefix $(LUA_BUILDDIR)/,audio.lua blit.lua color.lua \
math_ex.lua print.lua timer.lua playlist.lua pcm.lua \
sound.lua rbcompat.lua rbsettings.lua poly_points.lua \
printtable.lua printmenus.lua printsubmenu.lua \
- menubuttons.lua menucoresettings.lua)
+ menubuttons.lua menucoresettings.lua create_kbd_layout.lua)
ifndef APP_TYPE
ROCKS += $(LUA_BUILDDIR)/lua.rock
diff --git a/apps/plugins/lua/rocklib.c b/apps/plugins/lua/rocklib.c
index 81b6f4ce2a..050fbc73b2 100644
--- a/apps/plugins/lua/rocklib.c
+++ b/apps/plugins/lua/rocklib.c
@@ -143,10 +143,17 @@ RB_WRAP(touchscreen_mode)
RB_WRAP(kbd_input)
{
+ /*kbd_input(text, layout)*
+ note: layout needs special formatting
+ see includes/create_kbd_layout.lua
+ or lib/kbd_helper.c
+ */
luaL_Buffer b;
luaL_buffinit(L, &b);
const char *input = lua_tostring(L, 1);
+ size_t layout_len;
+ const char *layout = lua_tolstring(L, 2, &layout_len);
char *buffer = luaL_prepbuffer(&b);
if(input != NULL)
@@ -154,7 +161,10 @@ RB_WRAP(kbd_input)
else
buffer[0] = '\0';
- if(!rb->kbd_input(buffer, LUAL_BUFFERSIZE, NULL))
+ if(layout_len <= 1 || (unsigned short)layout[layout_len - 1] != 0xFFFE)
+ layout = NULL;
+
+ if(!rb->kbd_input(buffer, LUAL_BUFFERSIZE, (unsigned short *)layout))
{
luaL_addstring(&b, buffer);
luaL_pushresult(&b);