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1033 lines
32 KiB
1033 lines
32 KiB
# .tlv file generated by https://github.com/akkartik/teliva |
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# You may edit it if you are careful; however, you may see cryptic errors if you |
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# violate Teliva's assumptions. |
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# |
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# .tlv files are representations of Teliva programs. Teliva programs consist of |
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# sequences of definitions. Each definition is a table of key/value pairs. Keys |
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# and values are both strings. |
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# |
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# Lines in .tlv files always follow exactly one of the following forms: |
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# - comment lines at the top of the file starting with '#' at column 0 |
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# - beginnings of definitions starting with '- ' at column 0, followed by a |
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# key/value pair |
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# - key/value pairs consisting of ' ' at column 0, containing either a |
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# spaceless value on the same line, or a multi-line value |
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# - multiline values indented by more than 2 spaces, starting with a '>' |
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# |
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# If these constraints are violated, Teliva may unceremoniously crash. Please |
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# report bugs at http://akkartik.name/contact |
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- __teliva_timestamp: original |
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str_helpers: |
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>-- some string helpers from http://lua-users.org/wiki/StringIndexing |
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> |
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>-- index characters using [] |
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>getmetatable('').__index = function(str,i) |
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> if type(i) == 'number' then |
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> return str:sub(i,i) |
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> else |
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> return string[i] |
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> end |
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>end |
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> |
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>-- ranges using (), selected bytes using {} |
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>getmetatable('').__call = function(str,i,j) |
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> if type(i)~='table' then |
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> return str:sub(i,j) |
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> else |
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> local t={} |
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> for k,v in ipairs(i) do |
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> t[k]=str:sub(v,v) |
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> end |
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> return table.concat(t) |
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> end |
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>end |
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> |
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>-- iterate over an ordered sequence |
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>function q(x) |
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> if type(x) == 'string' then |
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> return x:gmatch('.') |
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> else |
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> return ipairs(x) |
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> end |
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>end |
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> |
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>-- insert within string |
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>function string.insert(str1, str2, pos) |
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> return str1:sub(1,pos)..str2..str1:sub(pos+1) |
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>end |
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> |
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>function string.remove(s, pos) |
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> return s:sub(1,pos-1)..s:sub(pos+1) |
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>end |
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> |
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>function string.pos(s, sub) |
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> return string.find(s, sub, 1, true) -- plain=true to disable regular expressions |
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>end |
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> |
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>-- TODO: backport utf-8 support from Lua 5.3 |
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- __teliva_timestamp: original |
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debugy: |
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>debugy = 5 |
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- __teliva_timestamp: original |
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dbg: |
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>-- helper for debug by print; overlay debug information towards the right |
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>-- reset debugy every time you refresh screen |
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>function dbg(window, s) |
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> local oldy = 0 |
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> local oldx = 0 |
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> oldy, oldx = window:getyx() |
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> window:mvaddstr(debugy, 60, s) |
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> debugy = debugy+1 |
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> window:mvaddstr(oldy, oldx, '') |
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>end |
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- __teliva_timestamp: original |
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check: |
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>function check(x, msg) |
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> if x then |
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> Window:addch('.') |
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> else |
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> print('F - '..msg) |
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> print(' '..str(x)..' is false/nil') |
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> teliva_num_test_failures = teliva_num_test_failures + 1 |
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> -- overlay first test failure on editors |
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> if teliva_first_failure == nil then |
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> teliva_first_failure = msg |
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> end |
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> end |
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>end |
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- __teliva_timestamp: original |
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check_eq: |
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>function check_eq(x, expected, msg) |
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> if eq(x, expected) then |
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> Window:addch('.') |
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> else |
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> print('F - '..msg) |
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> print(' expected '..str(expected)..' but got '..str(x)) |
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> teliva_num_test_failures = teliva_num_test_failures + 1 |
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> -- overlay first test failure on editors |
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> if teliva_first_failure == nil then |
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> teliva_first_failure = msg |
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> end |
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> end |
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>end |
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- __teliva_timestamp: original |
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eq: |
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>function eq(a, b) |
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> if type(a) ~= type(b) then return false end |
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> if type(a) == 'table' then |
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> if #a ~= #b then return false end |
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> for k, v in pairs(a) do |
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> if b[k] ~= v then |
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> return false |
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> end |
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> end |
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> for k, v in pairs(b) do |
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> if a[k] ~= v then |
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> return false |
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> end |
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> end |
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> return true |
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> end |
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> return a == b |
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>end |
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- __teliva_timestamp: original |
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str: |
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>-- smarter tostring |
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>-- slow; used only for debugging |
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>function str(x) |
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> if type(x) == 'table' then |
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> local result = '' |
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> result = result..#x..'{' |
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> for k, v in pairs(x) do |
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> result = result..str(k)..'='..str(v)..', ' |
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> end |
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> result = result..'}' |
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> return result |
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> elseif type(x) == 'string' then |
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> return '"'..x..'"' |
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> end |
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> return tostring(x) |
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>end |
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- __teliva_timestamp: original |
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find_index: |
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>function find_index(arr, x) |
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> for n, y in ipairs(arr) do |
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> if x == y then |
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> return n |
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> end |
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> end |
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>end |
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- __teliva_timestamp: original |
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trim: |
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>function trim(s) |
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> return s:gsub('^%s*', ''):gsub('%s*$', '') |
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>end |
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- __teliva_timestamp: original |
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split: |
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>function split(s, d) |
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> result = {} |
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> for match in (s..d):gmatch("(.-)"..d) do |
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> table.insert(result, match); |
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> end |
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> return result |
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>end |
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- __teliva_timestamp: original |
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map: |
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>-- only for arrays |
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>function map(l, f) |
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> result = {} |
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> for _, x in ipairs(l) do |
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> table.insert(result, f(x)) |
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> end |
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> return result |
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>end |
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- __teliva_timestamp: original |
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reduce: |
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>-- only for arrays |
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>function reduce(l, f, init) |
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> result = init |
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> for _, x in ipairs(l) do |
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> result = f(result, x) |
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> end |
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> return result |
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>end |
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- __teliva_timestamp: original |
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filter: |
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>function filter(h, f) |
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> result = {} |
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> for k, v in pairs(h) do |
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> if f(k, v) then |
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> result[k] = v |
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> end |
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> end |
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> return result |
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>end |
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- __teliva_timestamp: original |
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ifilter: |
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>-- only for arrays |
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>function ifilter(l, f) |
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> result = {} |
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> for _, x in ipairs(l) do |
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> if f(x) then |
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> table.insert(result, x) |
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> end |
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> end |
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> return result |
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>end |
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- __teliva_timestamp: original |
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sort_letters: |
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>function sort_letters(s) |
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> tmp = {} |
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> for i=1,#s do |
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> table.insert(tmp, s[i]) |
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> end |
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> table.sort(tmp) |
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> local result = '' |
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> for _, c in pairs(tmp) do |
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> result = result..c |
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> end |
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> return result |
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>end |
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> |
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>function test_sort_letters(s) |
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> check_eq(sort_letters(''), '', 'test_sort_letters: empty') |
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> check_eq(sort_letters('ba'), 'ab', 'test_sort_letters: non-empty') |
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> check_eq(sort_letters('abba'), 'aabb', 'test_sort_letters: duplicates') |
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>end |
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- __teliva_timestamp: original |
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count_letters: |
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>-- TODO: handle unicode |
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>function count_letters(s) |
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> local result = {} |
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> for i=1,s:len() do |
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> local c = s[i] |
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> if result[c] == nil then |
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> result[c] = 1 |
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> else |
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> result[c] = result[c] + 1 |
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> end |
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> end |
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> return result |
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>end |
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- __teliva_timestamp: original |
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count: |
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>-- turn an array of elements into a map from elements to their frequency |
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>-- analogous to count_letters for non-strings |
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>function count(a) |
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> local result = {} |
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> for i, v in ipairs(a) do |
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> if result[v] == nil then |
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> result[v] = 1 |
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> else |
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> result[v] = result[v] + 1 |
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> end |
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> end |
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> return result |
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>end |
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- __teliva_timestamp: original |
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union: |
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>function union(a, b) |
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> for k, v in pairs(b) do |
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> a[k] = v |
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> end |
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> return a |
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>end |
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- __teliva_timestamp: original |
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subtract: |
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>-- set subtraction |
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>function subtract(a, b) |
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> for k, v in pairs(b) do |
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> a[k] = nil |
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> end |
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> return a |
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>end |
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- __teliva_timestamp: original |
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all: |
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>-- universal quantifier on sets |
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>function all(s, f) |
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> for k, v in pairs(s) do |
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> if not f(k, v) then |
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> return false |
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> end |
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> end |
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> return true |
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>end |
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- __teliva_timestamp: original |
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to_array: |
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>-- turn a set into an array |
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>-- drops values |
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>function to_array(h) |
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> local result = {} |
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> for k, _ in pairs(h) do |
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> table.insert(result, k) |
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> end |
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> return result |
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>end |
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- __teliva_timestamp: original |
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append: |
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>-- concatenate list 'elems' into 'l', modifying 'l' in the process |
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>function append(l, elems) |
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> for i=1,#elems do |
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> table.insert(l, elems[i]) |
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> end |
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>end |
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- __teliva_timestamp: original |
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prepend: |
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>-- concatenate list 'elems' into the start of 'l', modifying 'l' in the process |
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>function prepend(l, elems) |
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> for i=1,#elems do |
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> table.insert(l, i, elems[i]) |
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> end |
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>end |
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- __teliva_timestamp: original |
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all_but: |
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>function all_but(x, idx) |
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> if type(x) == 'table' then |
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> local result = {} |
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> for i, elem in ipairs(x) do |
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> if i ~= idx then |
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> table.insert(result,elem) |
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> end |
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> end |
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> return result |
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> elseif type(x) == 'string' then |
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> if idx < 1 then return x:sub(1) end |
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> return x:sub(1, idx-1) .. x:sub(idx+1) |
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> else |
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> error('all_but: unsupported type '..type(x)) |
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> end |
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>end |
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> |
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>function test_all_but() |
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> check_eq(all_but('', 0), '', 'all_but: empty') |
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> check_eq(all_but('abc', 0), 'abc', 'all_but: invalid low index') |
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> check_eq(all_but('abc', 4), 'abc', 'all_but: invalid high index') |
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> check_eq(all_but('abc', 1), 'bc', 'all_but: first index') |
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> check_eq(all_but('abc', 3), 'ab', 'all_but: final index') |
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> check_eq(all_but('abc', 2), 'ac', 'all_but: middle index') |
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>end |
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- __teliva_timestamp: original |
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set: |
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>function set(l) |
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> local result = {} |
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> for i, elem in ipairs(l) do |
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> result[elem] = true |
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> end |
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> return result |
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>end |
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- __teliva_timestamp: original |
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set_eq: |
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>function set_eq(l1, l2) |
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> return eq(set(l1), set(l2)) |
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>end |
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> |
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>function test_set_eq() |
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> check(set_eq({1}, {1}), 'set_eq: identical') |
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> check(not set_eq({1, 2}, {1, 3}), 'set_eq: different') |
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> check(set_eq({1, 2}, {2, 1}), 'set_eq: order') |
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> check(set_eq({1, 2, 2}, {2, 1}), 'set_eq: duplicates') |
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>end |
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- __teliva_timestamp: original |
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clear: |
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>function clear(lines) |
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> while #lines > 0 do |
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> table.remove(lines) |
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> end |
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>end |
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- __teliva_timestamp: original |
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zap: |
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>function zap(target, src) |
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> clear(target) |
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> append(target, src) |
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>end |
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- __teliva_timestamp: original |
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mfactorial: |
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>-- memoized version of factorial |
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>-- doesn't memoize recursive calls, but may be good enough |
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>mfactorial = memo1(factorial) |
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- __teliva_timestamp: original |
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factorial: |
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>function factorial(n) |
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> local result = 1 |
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> for i=1,n do |
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> result = result*i |
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> end |
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> return result |
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>end |
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- __teliva_timestamp: original |
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memo1: |
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>-- a higher-order function that takes a function of a single arg |
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>-- (that never returns nil) |
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>-- and returns a memoized version of it |
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>function memo1(f) |
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> local memo = {} |
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> return function(x) |
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> if memo[x] == nil then |
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> memo[x] = f(x) |
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> end |
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> return memo[x] |
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> end |
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>end |
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> |
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>-- mfactorial doesn't seem noticeably faster |
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>function test_memo1() |
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> for i=0,30 do |
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> check_eq(mfactorial(i), factorial(i), 'memo1 over factorial: '..str(i)) |
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> end |
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>end |
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- __teliva_timestamp: original |
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num_permutations: |
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>-- number of permutations of n distinct objects, taken r at a time |
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>function num_permutations(n, r) |
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> return factorial(n)/factorial(n-r) |
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>end |
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> |
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>-- mfactorial doesn't seem noticeably faster |
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>function test_memo1() |
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> for i=0,30 do |
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> for j=0,i do |
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> check_eq(num_permutations(i, j), mfactorial(i)/mfactorial(i-j), 'num_permutations memoizes: '..str(i)..'P'..str(j)) |
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> end |
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> end |
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>end |
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- __teliva_timestamp: original |
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menu: |
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>-- To show app-specific hotkeys in the menu bar, add hotkey/command |
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>-- arrays of strings to the menu array. |
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>menu = { |
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> {'^k', 'clear'}, |
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> {'^w', 'write prose to file "toot" (edit hotkey does NOT save)'}, |
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>} |
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- __teliva_timestamp: original |
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Window: |
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>Window = curses.stdscr() |
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>curses.curs_set(0) -- we'll simulate our own cursor |
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- __teliva_timestamp: original |
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main: |
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>function main() |
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> init_colors() |
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> |
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> while true do |
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> render(Window) |
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> update(Window) |
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> end |
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>end |
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- __teliva_timestamp: original |
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init_colors: |
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>function init_colors() |
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> for i=0,7 do |
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> curses.init_pair(i, i, -1) |
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> end |
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> curses.init_pair(8, 7, 0) |
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> curses.init_pair(9, 7, 1) |
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> curses.init_pair(10, 7, 2) |
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> curses.init_pair(11, 7, 3) |
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> curses.init_pair(12, 7, 4) |
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> curses.init_pair(13, 7, 5) |
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> curses.init_pair(14, 7, 6) |
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> curses.init_pair(15, -1, 15) |
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>end |
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- __teliva_timestamp: original |
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prose: |
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>prose = '' |
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- __teliva_timestamp: original |
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cursor: |
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>cursor = 1 |
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- __teliva_timestamp: original |
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render: |
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>function render(window) |
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> window:clear() |
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> debugy = 5 |
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> local toots = split(prose, '\n\n===\n\n') |
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> pos = 1 |
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> for i, toot in ipairs(toots) do |
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> if i > 1 then |
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> pos = render_delimiter(window, '\n\n===\n\n', pos, cursor) |
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> end |
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> pos = render_text(window, toot, pos, cursor) |
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> print('') |
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> window:attron(curses.A_BOLD) |
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> window:addstr(toot:len()) |
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> window:attroff(curses.A_BOLD) |
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> end |
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> window:refresh() |
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>end |
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- __teliva_timestamp: original |
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render_delimiter: |
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>function render_delimiter(window, s, pos, cursor) |
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> local newpos = pos |
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> for i=1,s:len() do |
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> if newpos == cursor and i ~= 1 then |
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> if s[i] == '\n' then |
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> -- newline at cursor = render extra space in reverse video before jumping to new line |
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> window:attron(curses.A_REVERSE) |
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> window:addch(' ') |
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> window:attroff(curses.A_REVERSE) |
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> window:addstr(s[i]) |
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> else |
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> -- most characters at cursor = render in reverse video |
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> window:attron(curses.A_REVERSE) |
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> window:addstr(s[i]) |
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> window:attroff(curses.A_REVERSE) |
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> end |
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> else |
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> window:addstr(s[i]) |
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> end |
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> newpos = newpos+1 |
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> end |
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> return newpos |
|
>end |
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- __teliva_timestamp: original |
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render_text: |
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>-- https://gankra.github.io/blah/text-hates-you |
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>-- https://lord.io/text-editing-hates-you-too |
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> |
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>-- manual tests: |
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>-- cursor on some character |
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>-- cursor on (within) '\n\n===\n\n' delimiter (delimiter is hardcoded; things may break if you change it) |
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>-- cursor at end of each line |
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>-- render digits |
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> |
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>-- positions serve two purposes: |
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>-- character to index into prose |
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>-- cursor-printing |
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> |
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>-- sequence of stories |
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>-- focus on rendering a single piece of text, first get that rock-solid |
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>-- split prose into toots, manage transitions between toots in response to cursor movements |
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>-- cursor movement: left/right vs up/down |
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> |
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>-- what is the ideal representation? |
|
>-- prose + cursor has issues in multi-toot context. when to display cursor? |
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>function render_text(window, s, pos, cursor) |
|
> local newpos = pos |
|
>--? dbg(window, '--') |
|
> for i=1,s:len() do |
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>--? dbg(window, tostring(newpos)..' '..tostring(string.byte(s[i]))) |
|
> if newpos == cursor then |
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>--? dbg(window, 'cursor: '..tostring(cursor)) |
|
> if s[i] == '\n' then |
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> -- newline at cursor = render extra space in reverse video before jumping to new line |
|
> window:attron(curses.A_REVERSE) |
|
> window:addch(' ') |
|
> window:attroff(curses.A_REVERSE) |
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> window:addstr(s[i]) |
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> else |
|
> -- most characters at cursor = render in reverse video |
|
> window:attron(curses.A_REVERSE) |
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> window:addstr(s[i]) |
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> window:attroff(curses.A_REVERSE) |
|
> end |
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> else |
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> window:addstr(s[i]) |
|
> end |
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> newpos = newpos+1 |
|
> end |
|
> if newpos == cursor then |
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> window:attron(curses.A_REVERSE) |
|
> window:addch(' ') |
|
> window:attroff(curses.A_REVERSE) |
|
> end |
|
> return newpos |
|
>end |
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- __teliva_timestamp: original |
|
update: |
|
>function update(window) |
|
> local key = window:getch() |
|
> local h, w = window:getmaxyx() |
|
> if key == curses.KEY_LEFT then |
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> if cursor > 1 then |
|
> cursor = cursor-1 |
|
> end |
|
> elseif key == curses.KEY_RIGHT then |
|
> if cursor <= #prose then |
|
> cursor = cursor+1 |
|
> end |
|
> elseif key == curses.KEY_DOWN then |
|
> cursor = cursor_down(prose, cursor, w) |
|
> elseif key == curses.KEY_UP then |
|
> cursor = cursor_up(prose, cursor, w) |
|
> elseif key == curses.KEY_BACKSPACE or key == 8 or key == 127 then -- ctrl-h, ctrl-?, delete |
|
> if cursor > 1 then |
|
> cursor = cursor-1 |
|
> prose = prose:remove(cursor) |
|
> end |
|
> elseif key == 11 then -- ctrl-k |
|
> prose = '' |
|
> cursor = 1 |
|
> elseif key == 23 then -- ctrl-w |
|
> local out = io.open('toot', 'w') |
|
> if out ~= nil then |
|
> out:write(prose, '\n') |
|
> out:close() |
|
> end |
|
> elseif key == 10 or (key >= 32 and key < 127) then |
|
> prose = prose:insert(string.char(key), cursor-1) |
|
> cursor = cursor+1 |
|
> end |
|
>end |
|
- __teliva_timestamp: original |
|
cursor_down: |
|
>function cursor_down(s, old_idx, width) |
|
> local max = string.len(s) |
|
> local i = 1 |
|
> -- compute oldcol, the screen column of old_idx |
|
> local oldcol = 0 |
|
> local col = 0 |
|
> while true do |
|
> if i > max then |
|
> -- abnormal old_idx |
|
> return old_idx |
|
> end |
|
> if i == old_idx then |
|
> oldcol = col |
|
> break |
|
> end |
|
> if s[i] == '\n' then |
|
> col = 0 |
|
> else |
|
> col = col+1 |
|
> end |
|
> i = i+1 |
|
> end |
|
> -- skip rest of line |
|
> while true do |
|
> if i > max then |
|
> -- current line is at bottom |
|
> if col >= width then |
|
> return i |
|
> end |
|
> return old_idx |
|
> end |
|
> if s[i] == '\n' then |
|
> break |
|
> end |
|
> if i - old_idx >= width then |
|
> return i |
|
> end |
|
> col = col+1 |
|
> i = i+1 |
|
> end |
|
> -- compute index at same column on next line |
|
> -- i is at a newline |
|
> i = i+1 |
|
> col = 0 |
|
> while true do |
|
> if i > max then |
|
> -- next line is at bottom and is too short; position at end of it |
|
> return i |
|
> end |
|
> if s[i] == '\n' then |
|
> -- next line is too short; position at end of it |
|
> return i |
|
> end |
|
> if col == oldcol then |
|
> return i |
|
> end |
|
> col = col+1 |
|
> i = i+1 |
|
> end |
|
>end |
|
> |
|
>function test_cursor_down() |
|
> -- lines that don't wrap |
|
> check_eq(cursor_down('abc\ndef', 1, 5), 5, 'cursor_down: non-bottom line first char') |
|
> check_eq(cursor_down('abc\ndef', 2, 5), 6, 'cursor_down: non-bottom line mid char') |
|
> check_eq(cursor_down('abc\ndef', 3, 5), 7, 'cursor_down: non-bottom line final char') |
|
> check_eq(cursor_down('abc\ndef', 4, 5), 8, 'cursor_down: non-bottom line end') |
|
> check_eq(cursor_down('abc\ndef', 5, 5), 5, 'cursor_down: bottom line first char') |
|
> check_eq(cursor_down('abc\ndef', 6, 5), 6, 'cursor_down: bottom line mid char') |
|
> check_eq(cursor_down('abc\ndef', 7, 5), 7, 'cursor_down: bottom line final char') |
|
> check_eq(cursor_down('abc\n\ndef', 2, 5), 5, 'cursor_down: to shorter line') |
|
> |
|
> -- within a single wrapping line |
|
> -- |abcde| <-- wrap, no newline |
|
> -- |fgh | |
|
> check_eq(cursor_down('abcdefgh', 1, 5), 6, 'cursor_down from wrapping line: first char') |
|
> check_eq(cursor_down('abcdefgh', 2, 5), 7, 'cursor_down from wrapping line: mid char') |
|
> check_eq(cursor_down('abcdefgh', 5, 5), 9, 'cursor_down from wrapping line: to shorter line') |
|
> |
|
> -- within a single very long wrapping line |
|
> -- |abcde| <-- wrap, no newline |
|
> -- |fghij| <-- wrap, no newline |
|
> -- |klm | |
|
> check_eq(cursor_down('abcdefghijklm', 1, 5), 6, 'cursor_down within wrapping line: first char') |
|
> check_eq(cursor_down('abcdefghijklm', 2, 5), 7, 'cursor_down within wrapping line: mid char') |
|
> check_eq(cursor_down('abcdefghijklm', 5, 5), 10, 'cursor_down within wrapping line: final char') |
|
>end |
|
- __teliva_timestamp: original |
|
cursor_up: |
|
>function cursor_up(s, old_idx, width) |
|
> local max = string.len(s) |
|
> local i = 1 |
|
> -- compute oldcol, the screen column of old_idx |
|
> local oldcol = 0 |
|
> local col = 0 |
|
> local newline_before_current_line = 0 |
|
> while true do |
|
> if i > max or i == old_idx then |
|
> oldcol = col |
|
> break |
|
> end |
|
> if s[i] == '\n' then |
|
> col = 0 |
|
> newline_before_current_line = i |
|
> else |
|
> col = col+1 |
|
> if col == width then |
|
> col = 0 |
|
> end |
|
> end |
|
> i = i+1 |
|
> end |
|
> -- find previous newline |
|
> i = i-col-1 |
|
> if old_idx - newline_before_current_line > width then |
|
> -- we're in a wrapped line |
|
> return old_idx - width |
|
> end |
|
> -- scan back to start of previous line |
|
> if s[i] == '\n' then |
|
> i = i-1 |
|
> end |
|
> while true do |
|
> if i < 1 then |
|
> -- current line is at top |
|
> break |
|
> end |
|
> if s[i] == '\n' then |
|
> break |
|
> end |
|
> i = i-1 |
|
> end |
|
> -- i is at a newline |
|
> i = i+1 |
|
> -- skip whole screen lines within previous line |
|
> while newline_before_current_line - i > width do |
|
> i = i + width |
|
> end |
|
> -- compute index at same column on previous screen line |
|
> col = 0 |
|
> while true do |
|
> if i > max then |
|
> -- next line is at bottom and is too short; position at end of it |
|
> return i |
|
> end |
|
> if s[i] == '\n' then |
|
> -- next line is too short; position at end of it |
|
> return i |
|
> end |
|
> if col == oldcol then |
|
> return i |
|
> end |
|
> col = col+1 |
|
> i = i+1 |
|
> end |
|
>end |
|
> |
|
>function test_cursor_up() |
|
> -- lines that don't wrap |
|
> check_eq(cursor_up('abc\ndef', 1, 5), 1, 'cursor_up: top line first char') |
|
> check_eq(cursor_up('abc\ndef', 2, 5), 2, 'cursor_up: top line mid char') |
|
> check_eq(cursor_up('abc\ndef', 3, 5), 3, 'cursor_up: top line final char') |
|
> check_eq(cursor_up('abc\ndef', 4, 5), 4, 'cursor_up: top line end') |
|
> check_eq(cursor_up('abc\ndef', 5, 5), 1, 'cursor_up: non-top line first char') |
|
> check_eq(cursor_up('abc\ndef', 6, 5), 2, 'cursor_up: non-top line mid char') |
|
> check_eq(cursor_up('abc\ndef', 7, 5), 3, 'cursor_up: non-top line final char') |
|
> check_eq(cursor_up('abc\ndef\n', 8, 5), 4, 'cursor_up: non-top line end') |
|
> check_eq(cursor_up('ab\ndef\n', 7, 5), 3, 'cursor_up: to shorter line') |
|
> |
|
> -- within a single wrapping line |
|
> -- |abcde| <-- wrap, no newline |
|
> -- |fgh | |
|
> check_eq(cursor_up('abcdefgh', 6, 5), 1, 'cursor_up from wrapping line: first char') |
|
> check_eq(cursor_up('abcdefgh', 7, 5), 2, 'cursor_up from wrapping line: mid char') |
|
> check_eq(cursor_up('abcdefgh', 8, 5), 3, 'cursor_up from wrapping line: final char') |
|
> check_eq(cursor_up('abcdefgh', 9, 5), 4, 'cursor_up from wrapping line: wrapped line end') |
|
> |
|
> -- within a single very long wrapping line |
|
> -- |abcde| <-- wrap, no newline |
|
> -- |fghij| <-- wrap, no newline |
|
> -- |klm | |
|
> check_eq(cursor_up('abcdefghijklm', 11, 5), 6, 'cursor_up within wrapping line: first char') |
|
> check_eq(cursor_up('abcdefghijklm', 12, 5), 7, 'cursor_up within wrapping line: mid char') |
|
> check_eq(cursor_up('abcdefghijklm', 13, 5), 8, 'cursor_up within wrapping line: final char') |
|
> check_eq(cursor_up('abcdefghijklm', 14, 5), 9, 'cursor_up within wrapping line: wrapped line end') |
|
> |
|
> -- from below to (the bottom of) a wrapping line |
|
> -- |abcde| <-- wrap, no newline |
|
> -- |fg | |
|
> -- |hij | |
|
> check_eq(cursor_up('abcdefg\nhij', 9, 5), 6, 'cursor_up to wrapping line: first char') |
|
> check_eq(cursor_up('abcdefg\nhij', 10, 5), 7, 'cursor_up to wrapping line: mid char') |
|
> check_eq(cursor_up('abcdefg\nhij', 11, 5), 8, 'cursor_up to wrapping line: final char') |
|
> check_eq(cursor_up('abcdefg\nhij', 12, 5), 8, 'cursor_up to wrapping line: to shorter line') |
|
>end |
|
- __teliva_timestamp: |
|
>Thu Feb 17 19:52:30 2022 |
|
doc:blurb: |
|
>A tiny editor (no scrolling) for composing a series of toots or tweets. Always shows character counts for current state of prose. |
|
> |
|
>Typing '===' on its own lines, surrounded by empty lines, partitions prose and gives all segments independent character counts. Good for threads (tweetstorms). |
|
- __teliva_timestamp: |
|
>Fri Mar 11 09:45:27 2022 |
|
first_toot: |
|
>first_toot = 1 |
|
- __teliva_timestamp: |
|
>Fri Mar 11 11:47:34 2022 |
|
update: |
|
>function update(window) |
|
> local key = window:getch() |
|
> local h, w = window:getmaxyx() |
|
> if key == curses.KEY_LEFT then |
|
> if cursor > 1 then |
|
> cursor = cursor-1 |
|
> end |
|
> elseif key == curses.KEY_RIGHT then |
|
> if cursor <= #prose then |
|
> cursor = cursor+1 |
|
> end |
|
> elseif key == curses.KEY_DOWN then |
|
> cursor = cursor_down(prose, cursor, w) |
|
> elseif key == curses.KEY_UP then |
|
> cursor = cursor_up(prose, cursor, w) |
|
> elseif key == curses.KEY_BACKSPACE or key == 8 or key == 127 then -- ctrl-h, ctrl-?, delete |
|
> if cursor > 1 then |
|
> cursor = cursor-1 |
|
> prose = prose:remove(cursor) |
|
> end |
|
> elseif key == 6 then -- ctrl-f |
|
> first_toot = first_toot+1 |
|
> elseif key == 2 then -- ctrl-b |
|
> if first_toot > 1 then |
|
> first_toot = first_toot-1 |
|
> end |
|
> elseif key == 11 then -- ctrl-k |
|
> prose = '' |
|
> cursor = 1 |
|
> elseif key == 23 then -- ctrl-w |
|
> local out = io.open('toot', 'w') |
|
> if out ~= nil then |
|
> out:write(prose, '\n') |
|
> out:close() |
|
> end |
|
> elseif key == 10 or (key >= 32 and key < 127) then |
|
> prose = prose:insert(string.char(key), cursor-1) |
|
> cursor = cursor+1 |
|
> end |
|
>end |
|
- __teliva_timestamp: |
|
>Fri Mar 11 11:48:43 2022 |
|
menu: |
|
>-- To show app-specific hotkeys in the menu bar, add hotkey/command |
|
>-- arrays of strings to the menu array. |
|
>menu = { |
|
> {'^w', 'write to "toot"'}, |
|
> {'^f|^b', 'scroll'}, |
|
> {'^k', 'clear'}, |
|
>} |
|
- __teliva_timestamp: |
|
>Sat Mar 12 08:48:44 2022 |
|
render: |
|
>function render(window) |
|
> window:clear() |
|
> debugy = 5 |
|
> local toots = split(prose, '\n\n===\n\n') |
|
> pos = 1 |
|
> for i, toot in ipairs(toots) do |
|
>--? dbg(window, "render: "..i.." pos "..pos.." cursor "..cursor) |
|
> if i > 1 then |
|
> pos = render_delimiter(window, '\n\n===\n\n', pos, cursor) |
|
>--? dbg(window, "delim: "..pos.." cursor "..cursor) |
|
> end |
|
> if i <= first_toot then |
|
> window:clear() |
|
> end |
|
> pos = render_text(window, toot, pos, cursor) |
|
> print('') |
|
>--? dbg(window, "text: "..pos.." cursor "..cursor) |
|
> window:attron(curses.A_BOLD) |
|
> window:addstr(toot:len()) |
|
> window:attroff(curses.A_BOLD) |
|
> end |
|
> window:refresh() |
|
>end |
|
- __teliva_timestamp: |
|
>Sat Mar 12 08:57:41 2022 |
|
doc:blurb: |
|
>A tiny editor (no scrolling) for composing a series of toots or tweets. |
|
>Always shows character counts for current state of prose. |
|
> |
|
>Typing '===' on its own lines, surrounded by empty lines, partitions prose and gives all segments independent character counts. Good for threads (tweetstorms). |
|
- __teliva_timestamp: |
|
>Sat Mar 12 08:59:52 2022 |
|
__teliva_note: |
|
>hacky scrolling support |
|
> |
|
>Since I started out rendering a toot at a time and tracking the position |
|
>as I rendered each toot, the easiest way to build this was to scroll a |
|
>toot at a time, always render each toot and just decide when to stop |
|
>clearing the screen. This way I don't mess with the position computation |
|
>logic which is carefully synced between render and cursor_up/cursor_down. |
|
> |
|
>But there may be a more elegant approach if I was building the current state |
|
>from scratch. |
|
doc:blurb: |
|
>A tiny editor for composing a short series of toots or tweets. Always shows character counts for current state of prose. |
|
> |
|
>Typing '===' on its own lines, surrounded by empty lines, partitions prose and gives all segments independent character counts. Good for threads (tweetstorms). |
|
> |
|
>Scrolling support is rudimentary. Keys to scroll are independent of cursor movement, so cursor can move off the screen and confusingly 'get lost'. |
|
- __teliva_timestamp: |
|
>Wed Mar 30 21:33:17 2022 |
|
update: |
|
>function update(window) |
|
> local key = window:getch() |
|
> local h, w = window:getmaxyx() |
|
> if key == curses.KEY_LEFT then |
|
> if cursor > 1 then |
|
> cursor = cursor-1 |
|
> end |
|
> elseif key == curses.KEY_RIGHT then |
|
> if cursor <= #prose then |
|
> cursor = cursor+1 |
|
> end |
|
> elseif key == curses.KEY_DOWN then |
|
> cursor = cursor_down(prose, cursor, w) |
|
> elseif key == curses.KEY_UP then |
|
> cursor = cursor_up(prose, cursor, w) |
|
> elseif key == curses.KEY_BACKSPACE or key == 8 or key == 127 then -- ctrl-h, ctrl-?, delete |
|
> if cursor > 1 then |
|
> cursor = cursor-1 |
|
> prose = prose:remove(cursor) |
|
> end |
|
> elseif key == 6 then -- ctrl-f |
|
> first_toot = first_toot+1 |
|
> elseif key == 2 then -- ctrl-b |
|
> if first_toot > 1 then |
|
> first_toot = first_toot-1 |
|
> end |
|
> elseif key == 23 then -- ctrl-w |
|
> local out = io.open('toot', 'w') |
|
> if out ~= nil then |
|
> out:write(prose, '\n') |
|
> out:close() |
|
> end |
|
> elseif key == 10 or (key >= 32 and key < 127) then |
|
> prose = prose:insert(string.char(key), cursor-1) |
|
> cursor = cursor+1 |
|
> end |
|
>end |
|
- __teliva_timestamp: |
|
>Wed Mar 30 21:33:44 2022 |
|
__teliva_note: |
|
>Get rid of the ctrl-k shortcut. Makes it too easy to lose data. To clear the page just quit and restart. |
|
menu: |
|
>-- To show app-specific hotkeys in the menu bar, add hotkey/command |
|
>-- arrays of strings to the menu array. |
|
>menu = { |
|
> {'^w', 'write to "toot"'}, |
|
> {'^f|^b', 'scroll'}, |
|
>} |
|
- __teliva_timestamp: |
|
>Thu Mar 31 08:42:19 2022 |
|
update: |
|
>function update(window) |
|
> local key = window:getch() |
|
> local h, w = window:getmaxyx() |
|
> if key == curses.KEY_LEFT then |
|
> if cursor > 1 then |
|
> cursor = cursor-1 |
|
> end |
|
> elseif key == curses.KEY_RIGHT then |
|
> if cursor <= #prose then |
|
> cursor = cursor+1 |
|
> end |
|
> elseif key == curses.KEY_DOWN then |
|
> cursor = cursor_down(prose, cursor, w) |
|
> elseif key == curses.KEY_UP then |
|
> cursor = cursor_up(prose, cursor, w) |
|
> elseif key == curses.KEY_BACKSPACE or key == 8 or key == 127 then -- ctrl-h, ctrl-?, delete |
|
> if cursor > 1 then |
|
> cursor = cursor-1 |
|
> prose = prose:remove(cursor) |
|
> end |
|
> elseif key == 6 then -- ctrl-f |
|
> first_toot = first_toot+1 |
|
> elseif key == 2 then -- ctrl-b |
|
> if first_toot > 1 then |
|
> first_toot = first_toot-1 |
|
> end |
|
> elseif key == 23 then -- ctrl-w |
|
> local out = io.open(next_toot(), 'w') |
|
> if out ~= nil then |
|
> out:write(prose, '\n') |
|
> out:close() |
|
> end |
|
> elseif key == 10 or (key >= 32 and key < 127) then |
|
> prose = prose:insert(string.char(key), cursor-1) |
|
> cursor = cursor+1 |
|
> end |
|
>end |
|
- __teliva_timestamp: |
|
>Thu Mar 31 08:44:19 2022 |
|
next_toot: |
|
>-- pick the first filename starting with 'toot' that doesn't exist yet |
|
>function next_toot() |
|
> if not file_exists('toot') then return 'toot' end |
|
> local idx = 1 |
|
> while true do |
|
> local curr = 'toot'..str(idx) |
|
> if not file_exists(curr) then |
|
> return curr |
|
> end |
|
> idx = idx+1 |
|
> end |
|
>end |
|
- __teliva_timestamp: |
|
>Thu Mar 31 08:46:27 2022 |
|
file_exists: |
|
>function file_exists(filename) |
|
> local f = io.open(filename, 'r') |
|
> return f ~= nil |
|
>end
|
|
|