cf has 5 modes: DEFINE, COMMENT, MACRO, COMPILE, INTERPRET.
cf supports using either a marker byte in the whitespace or a word to identify each mode.
cf includes a simple block editor that colors the file to identify how it will be processed.
cf is a work in progress. Please collaborate with me on it!
Notes:
Words like IF/THEN are defined in block 1.
They are BLUE (MACRO) because they generate code.
BEGIN, WHILE, UNTIL, and AGAIN are also interpreted.
The markers:
Mode
Color
Code
Editor
Word(s)
DEFINE
red
1
ctrl-a
":"
COMPILE
green
2
ctrl-b
"]" or ")"
INTERPRET
orange
3
ctrl-c
"[" or "))"
MACRO
blue
4
ctrl-d
"[" or "))"
COMMENT
white
7
ctrl-g
"(" or "(("
Blocks
In cf, a block is a file with the name "block-NNN.cf". For the built-in editor, it has a maximum of BLOCK_SZ bytes. For other editors, there is no limit.
BLOCK_SZ, in cf.h, is defaulted to 2500. It is easy to change as needed.
The Editor
The editor supports 25 lines of 100 characters each.
The editor has 3 modes: NORMAL, INSERT and REPLACE.
Commmon actions
Key
Action
[ctrl-a]
Insert a space if necessary. Place DEFINE marker.
[ctrl-b]
Insert a space if necessary. Place COMPILE marker.
[ctrl-c]
Insert a space if necessary. Place INTERPRET marker.
[ctrl-d]
Insert a space if necessary. Place MACRO marker.
[ctrl-e]
(Unused)
[ctrl-f]
(Unused)
[ctrl-g]
Insert a space if necessary. Place COMMENT marker.
[ctrl-h]
Move cursor left 1 character.
[ctrl-i]
Move cursor right 8 characters.
[ctrl-j]
Move cursor down 1 line.
[ctrl-k]
Move cursor up 1 line.
[ctrl-l]
Move cursor right 1 character.
[ctrl-m]
Move cursor down 1 and to the beginning of the line.
[ctrl-n]
(Unused)
[ctrl-o]
(Unused)
[ctrl-p]
(Unused)
[ctrl-q]
Move cursor left 8 characters.
[ctrl-r]
(Unused)
[ctrl-s]
(Unused)
[ctrl-t]
(Unused)
[ctrl-u]
Move cursor down 5 lines
[ctrl-v]
Move cursor up 5 lines
[ctrl-w]
(Unused)
[ctrl-x]
Move left 1 and delete (line-only).
[ctrl-y]
Delete current char (line-only).
[enter]
Move cursor down 1 and to the beginning of the line.
[tab]
Move cursor right 8 characters.
[bs]
Windows: [ctrl-h], Linux: [ctrl-x]
NORMAL MODE
Key
Action
[space]
Move right 1 character.
b
Insert a space (line-only).
B
Insert a space.
C
Delete to EOL and change MODE to INSERT.
d[x]
[x] identifies what to delete.
D
Delete the current line into the YANK buffer.
g
Move to the beginning of the block.
G
Move to the beginning of the last line of the block.
h/j/k/l
Move cursor left/down/up/right (like VI).
i
Change MODE to INSERT.
I
Move to the beginning of the line and change MODE to INSERT.
o
Open a line below the current line and change MODE to REPLACE.
O
Open a line above the current line and change MODE to REPLACE.
p
Paste the yanked line after the current line.
P
Paste the yanked line before the current line.
q
Move right 8 characters.
Q
Move left 8 characters.
r
Replace the character under the cursor with the next key pressed.
R
Change MODE to REPLACE.
x
Delete the current character (line-only).
X
Delete the current character.
Y
YANK/copy the current line into the YANK buffer.
_
Move to the beginning of the line.
$
Move to the end Of the line.
:
Execute a command.
Deleting
The combination d[x] identifies what to delete.
Combo
Action
d.
Delete the current character to the end of the line (same as x).
d$
Delete to the end of the line.
d_
Delete to the beginning of the line.
dd
Delete the current line into the YANK buffer (same as D).
