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Length: 10576 (0x2950)
Types: TextFile
Names: »run_ctrlsk.clu«
└─⟦a0efdde77⟧ Bits:30001252 EUUGD11 Tape, 1987 Spring Conference Helsinki
└─⟦526ad3590⟧ »EUUGD11/gnu-31mar87/X.V10.R4.tar.Z«
└─⟦2109abc41⟧
└─⟦this⟧ »./X.V10R4/xted/run_ctrlsk.clu«
run_ctrlsk = proc (e: env, c: char) signals (errmsg(string), stop(env, string))
help_msg1 = "@,?w: move to end of # previous word\n" ||
"A,?x: move backward # pages\n" ||
"B,?r: move forward # pages\n" ||
"C,?v: move right # words\n" ||
"D,?t: move left # word\n" ||
"H: enter alternate keypad mode\n" ||
"J: pattern search # times for default\n" ||
"L,?q: delete backward to end of # previous word\n" ||
"M,?s: delete forward to start of # next word\n" ||
"N,?y: move to start of # next word\n"
norm_msg = "P: delete forward # words\n" ||
"Q: delete backward # words\n"
swap_msg = "P: delete backward # words\n" ||
"Q: delete forward # words\n"
help_msg2 = "R: forward string search # times for default\n" ||
"S,?p: backward string search # times for default\n" ||
"T: set case mode for searches\n" ||
"U: scroll window up # lines\n" ||
"V: scroll window down # lines\n" ||
"W: reposition window at cursor\n" ||
"?n: exit to EXEC\n" ||
"?u: exit alternate keypad mode\n" ||
"?M: garbage collect address space\n" ||
"&c: scroll window to button position\n" ||
"&C: set cursor to button position\n" ||
"&t: (#<1: normal, #=1: underline, #>1: invert) between cursor and mouse\n" ||
"&T: set mark to button position\n" ||
"&w: move to button window cursor\n" ||
"&W: move to button window\n" ||
"&Y: insert cut buffer |#| times (#<0: before cursor)\n" ||
"&z: store saved text in cut buffer\n" ||
"&Z: store deleted text in cut buffer\n" ||
"esc: redefine escape sequence"
prompt1 = "Escape: "
prompt2 = "Escape: ?"
prompt3 = "Escape: ["
prompt4 = "Escape: O"
own any_defs: bool := false
own redefs: string
own qredefs: string
own swapped: bool := false
if c = ctrlat
then prompt = "Set red & blue function keys"
legal = "RS"
help = "R: reset to normal mode\n" ||
"S: swap meanings"
i: int, opt: char := get_option (e, prompt, legal, help, false)
swapped := opt = 'S'
return
end resignal errmsg
b: buf := e.buffer
arg: int := e.this_arg
line, pos: int := buf$get_cursor(b)
dotop: bool := false
prompt: string := prompt1
qmark: bool := false
xmark: bool := false
while true do
if ~dotop
then dotop := ~_pending_wait() end
if dotop
then top_display(e, prompt)
env$display(e)
end
c := _getc()
if xmark cand c >= 'a' cand c <= 'z'
then qmark := true end
if dotop
then top_display(e, string$append(prompt, c)) end
if any_defs cand ((~qmark cand string$indexc(c, redefs) > 0) cor
(qmark cand string$indexc(c, qredefs) > 0))
then s: string
if qmark
then s := "esc-?"
else s := "esc-"
end
s := env$fetch_str(e, string$append(s, c), "")
env$forget_char(e)
for i: int in int$from_to_by(arg, 1, -1) do
_push_macro_chars(s)
end
return
end
if (~qmark cand (c = 'A' cor c = 'B')) cor
(qmark cand (c = 'x' cor c = 'r'))
then % move up/down arg pages
if c = 'A' cor c = 'x' then arg := - arg end
env$move_window(e, arg)
elseif (~qmark cand (c = 'C' cor c = 'D')) cor
(qmark cand (c = 'v' cor c = 't'))
then % move right/left # words
if c = 'D' cor c = 't' then arg := - arg end
line, pos := scan_word(b, line, pos, arg,
false, e.word_chars)
buf$set_cursor(b, line, pos)
elseif (~qmark cand (c = '@' cor c = 'N')) cor
(qmark cand (c = 'w' cor c = 'y'))
then % move right/left # start/end words
if c = '@' cor c = 'w' then arg := - arg end
line, pos := scan_word(b, line, pos, arg,
true, e.word_chars)
buf$set_cursor(b, line, pos)
elseif ~qmark cand c = 'H'
then % enter alternate keypad mode
if _set_keypad_mode(true)
then top_display(e, "Entering Alternate Keypad Mode.")
env$store_num(e, "keypad", 1)
end
elseif ~qmark cand c = 'J'
then % pattern search # times
obj: string := env$fetch_str(e, "psearch", "")
case: bool := env$fetch_num(e, "ignore_case", 0) = 0
confirm: bool := env$fetch_num(e, "pconfirm", 0) ~= 0
immed: bool := false
if arg < 0
then immed := true
arg := -arg
end
for arg in int$from_to_by(arg, 1, -1) do
if ~pattern$search(e, obj, case, immed, confirm)
then signal errmsg("Not found!") end
end
elseif (~qmark cand (c = 'L' cor c = 'M')) cor
(qmark cand (c = 'q' cor c = 's'))
then % delete left/right # end/start words
if c = 'L' cor c = 'q' then arg := -arg end
line, pos := scan_word(b, line, pos, arg,
true, e.word_chars)
env$delete1(e, line, pos)
elseif ~qmark cand (c = 'P' cor c = 'Q')
then % delete left/right # words
if (c = 'P' cand swapped) cor (c = 'Q' cand ~swapped)
then arg := -arg end
line, pos := scan_word(b, line, pos, arg,
false, e.word_chars)
env$delete1(e, line, pos)
elseif (~qmark cand (c = 'R' cor c = 'S')) cor (qmark cand c = 'p')
then % search left/right # times
if c ~= 'R' then arg := - arg end
if ~string_search(e.buffer,
env$fetch_str(e, "search", ""),
arg,
env$fetch_num(e, "ignore_case", 0) = 0)
then signal errmsg("Not found!") end
elseif ~qmark cand c = 'T'
then % set case mode
arg := 0
if mconfirm(e, "Ignore upper/lower case in searches", true)
then arg := 1 end
env$store_num(e, "ignore_case", arg)
elseif ~qmark cand (c = 'U' cor c = 'V')
then % scroll up/down
if c = 'U' then arg := -arg end
pos := env$choose_window(e) + arg
if line < pos
then if arg = -1 cor arg = 1 then _bell() end
pos := line
elseif line >= pos + e.size
then if arg = -1 cor arg = 1 then _bell() end
pos := line - e.size + 1
end
e.window_top := pos
elseif ~qmark cand c = 'W'
then % reposition at cursor
env$new_window(e)
elseif qmark cand (c = 'M' cor c = 'n')
then % enter EXEC or GC
e.this_arg := 1
if c = 'M' then e.this_arg := 4 end
run_ctrlat(e, ctrlat)
elseif qmark cand c = 'u'
then % exit alternate keypad mode
if _set_keypad_mode(false)
then top_display(e, "Leaving Alternate Keypad Mode.")
env$store_num(e, "keypad", 0)
end
elseif c = '?'
then % read next char or print help
if ~qmark cand ~xmark
then qmark := true
prompt := prompt2
continue
end
help: string := norm_msg
if swapped then help := swap_msg end
type_string(e, help_msg1 || help || help_msg2,
"---- Help for escape sequences")
dotop := true
xmark := false
qmark := false
prompt := prompt1
continue
elseif c = '[' cand ~xmark cand ~qmark
then xmark := true
prompt := prompt3
continue
elseif c = 'O' cand ~xmark cand ~qmark
then xmark := true
prompt := prompt4
continue
elseif c = esc cand ~qmark cand ~xmark
then % redefine escape sequence
prompt := "Define escape: "
while true do
if ~_in_macro()
then top_display(e, prompt)
env$display(e)
end
c := _getc()
prompt := string$append(prompt, c)
if qmark cor xmark
then break
elseif c = '?'
then qmark := true
elseif c = '[' cor c = 'O'
then xmark := true
else break end
end
if ~_in_macro() then top_display(e, prompt) end
if env$is_argenv(e)
then signal errmsg("Can't redefine now!") end
if xmark cand c >= 'a' cand c <= 'z'
then qmark := true end
if (~qmark cand c = esc) cor (qmark cand c = '?')
then signal errmsg("Can't redefine this sequence!") end
if ~any_defs
then redefs := ""
qredefs := ""
end
name, defs: string
if qmark
then name := string$append("esc-?", c)
defs := qredefs
else name := string$append("esc-", c)
defs := redefs
end
s: string := get_string_arg(e, "Define as",
env$fetch_str(e, name, ""))
env$store_str(e, name, s)
arg := string$indexc(c, defs)
if string$empty(s)
then if arg > 0
then defs := string$substr(defs, 1, arg - 1) ||
string$rest(defs, arg + 1)
any_defs := ~string$empty(redefs) cor
~string$empty(qredefs)
end
elseif arg = 0
then defs := string$append(defs, c)
any_defs := true
end
if qmark
then qredefs := defs
else redefs := defs
end
elseif (c = '\303' cor c = '\324') cand ~qmark cand ~xmark
then hpos, vpos: int := input$bpos()
lines, chars: int := _get_screen_size()
if vpos <= e.top_line cor vpos > e.last_line cor
hpos < 0 cor hpos >= chars
then signal errmsg("Position lies outside window") end
vpos := vpos - e.top_line + e.window_top - 1
s: string := b[vpos]
i: int := int$min(hpos + 2, string$size(s) + 1)
while _calc_hpos(s, i) > hpos do
i := i - 1
end
if c = '\303'
then buf$set_cursor(b, vpos, i)
else buf$set_mark(b, vpos, i)
end
elseif (c = '\327' cor c = '\343' cor c = '\367') cand
~qmark cand ~xmark
then hpos, vpos: int := input$bpos()
lines, chars: int := _get_screen_size()
for ee: env in winset$displayed() do
if vpos <= ee.top_line cor vpos > ee.last_line cor
hpos < 0 cor hpos >= chars cor
(env$is_argenv(e) cand e ~= ee)
then continue end
if c = '\343'
then if e ~= ee
then break end
e.window_top := line + e.top_line + 1 - vpos
return
end
if c = '\327'
then env$choose_cursor(ee) end
signal stop(ee, "")
end
signal errmsg("Position lies outside window")
elseif c = '\331' cand ~qmark cand ~xmark
then s: string := x_fetch_cut(0)
if string$empty(s) then return end
for i: int in int$from_to_by(int$abs(arg), 1, -1) do
if ~env$insert1(e, s) then
signal errmsg("Can't insert text here!")
end
end
if arg > 0 then buf$set_cursor(b, line, pos) end
elseif (c = '\332' cor c = '\372') cand ~qmark cand ~xmark
then cut: buf
if c = '\332'
then cut := e.killed
else cut := e.saved
end
buf$set_cursor(cut, 1, 1)
x_store_cut(0, buf$b2s(cut, buf$size(cut), max_int))
buf$set_cursor(cut, 1, 1)
elseif c = '\364' cand ~qmark cand ~xmark
then input$set_highlight(arg > 0)
screen$set_highlight(arg > 0, arg > 1)
elseif ((c >= '\301' cand c <= '\330') cor
(c >= '\341' cand c <= '\370')) cand
~qmark cand ~xmark
then return
elseif c = ctrlg
then % quit
signal errmsg(quit_msg)
else signal errmsg("Illegal escape char: '" || c2s(c) || "'")
end resignal errmsg
return
end
end run_ctrlsk