My latest "edit" function. VERY useful to edit a function with "vi" editor
while *inside* the interpreter.
The important part of this function I got from some post long ago making "vi" or
"vim" working inside the interpreter,
mainly:
SaveTTY←⎕IO⊃⍎')HOST stty -g'
⊣⍎')HOST >/dev/tty stty sane'⊣⍎')HOST >/dev/tty ','vi',' ',fs_name
⊣⍎')HOST >/dev/tty stty ',SaveTTY
Usage:
edit 'some_function_name'
and with
]usercmd ]edit {edit(⎕IO+1)⊃⍵←⍺} ⍝ assuming you are at the latest SVN
you can call it with
]edit some_function_name ⍝ without the quotes around the function
name.
here it is:
)sic
)erase edit
∇R←skipwrite edit funct;fd;lines;fs_name;z;r;SaveTTY
R←'' ⍝ Always return ''
fs_name←'tmp/', 18 ⎕cr funct ⍝ The file name in the
filesystem
⊣ (⎕FIO[20] 'tmp') ⍝ mkdir tmp
⍝ ---------------------------------------------------------------------------
⍝ Check if it is a request to reedit the previous written file in filesystem
⍝ very usefull in case of a syntax error while ⎕fx 'ing the function ...
⍝ ---------------------------------------------------------------------------
→(2=⎕nc 'skipwrite')/SkipWrite ⍝ If a left arg then
skip write to the file
lines←{(⎕ucs 10),⍨(∼⌽∧\⌽⍵=' ')/⍵} ¨ ⊂[⎕io+1] ⎕cr funct ⍝ The lines of the
function
⍝ --------------------------------------------------
⍝ write the contents of this "funct" into the file
⍝ --------------------------------------------------
→(0>fd← "w" ⎕FIO[3] fs_name)/Error ⍝ Open for writing
⊣ {⍵ ⎕FIO[23] fd} ¨ lines ⍝ write all lines
⊣ (⎕FIO[4] fd) ⍝ Close the file
⍝ --------------------------------------------------
⍝ Now do the actual edition ...
⍝ --------------------------------------------------
SkipWrite:
SaveTTY←⎕IO⊃⍎')HOST stty -g'
⊣⍎')HOST >/dev/tty stty sane'⊣⍎')HOST >/dev/tty ','vi',' ',fs_name
⊣⍎')HOST >/dev/tty stty ',SaveTTY
⍝ ----------------
⍝ and try ⎕fx it
⍝ ----------------
→(0≠"r" ⎕fio[31] fs_name)/Error ⍝ Can not read file ?
→ Error
z←⎕fio[26] fs_name ⍝ First pass, read the
whole file
lines←⍳+/((↑"\n")=z) ⍝ Compute the iota for
each line
z←(⍴lines)⍴⍬ ⍝ Preallocate "z" to
the right size
fd←⎕fio[3] fs_name ⍝ Open the file
⊣ {⊣z[⍵]←⊂19 ⎕cr ⎕ucs ¯1↓(⎕fio[8] fd)} ⍤0 lines ⍝ Put each line in the
preallocated "z"
⊣ (⎕fio[4] fd) ⋄ →Fix ⍝ Close the file and
⎕FX it
Error: ⎕ES ∊'Error on file "',fs_name,'": ',⎕fio[2] | ⎕fio[1] ''
Fix: r←⎕fx z
⍝
----------------------------------------------------------------------------------------
⍝ Well, if "r" is an integer then it is a syntax error, if it is a string then
it succeed.
⍝
----------------------------------------------------------------------------------------
⍝
→(0=↑0⍴r)/Syntax ⍝ number → then a
systax error
Ok: ⎕←∊ "Function '" (r) ("' saved.") ⋄ →0 ⍝ Probably a succesfull "save"
or "save as"
⍝ ----------------------------------
⍝ We get here on errors while saving
⍝ ----------------------------------
Syntax:
9 ⎕cr ∊(∊'Line' (r-1) 'is in error: ') (∊z[r])
"Beware that you can not edit a running function or a suspended function on the stack, try
)sic before launching \"edit\"."
∊ "Syntax error at line:" (r-1) ("( Use: 1 edit '" funct "' ) to have a chance to
fix it without having to reenter all your latest changes.")
''
∇
