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local char = require('cmp.utils.char')
local str = {}
local INVALIDS = {}
INVALIDS[string.byte("'")] = true
INVALIDS[string.byte('"')] = true
INVALIDS[string.byte('=')] = true
INVALIDS[string.byte('$')] = true
INVALIDS[string.byte('(')] = true
INVALIDS[string.byte('[')] = true
INVALIDS[string.byte('<')] = true
INVALIDS[string.byte('{')] = true
INVALIDS[string.byte(' ')] = true
INVALIDS[string.byte('\t')] = true
INVALIDS[string.byte('\n')] = true
INVALIDS[string.byte('\r')] = true
local NR_BYTE = string.byte('\n')
local PAIRS = {}
PAIRS[string.byte('<')] = string.byte('>')
PAIRS[string.byte('[')] = string.byte(']')
PAIRS[string.byte('(')] = string.byte(')')
PAIRS[string.byte('{')] = string.byte('}')
PAIRS[string.byte('"')] = string.byte('"')
PAIRS[string.byte("'")] = string.byte("'")
---Return if specified text has prefix or not
---@param text string
---@param prefix string
---@return boolean
str.has_prefix = function(text, prefix)
if #text < #prefix then
return false
end
for i = 1, #prefix do
if not char.match(string.byte(text, i), string.byte(prefix, i)) then
return false
end
end
return true
end
---get_common_string
str.get_common_string = function(text1, text2)
local min = math.min(#text1, #text2)
for i = 1, min do
if not char.match(string.byte(text1, i), string.byte(text2, i)) then
return string.sub(text1, 1, i - 1)
end
end
return string.sub(text1, 1, min)
end
---Remove suffix
---@param text string
---@param suffix string
---@return string
str.remove_suffix = function(text, suffix)
if #text < #suffix then
return text
end
local i = 0
while i < #suffix do
if string.byte(text, #text - i) ~= string.byte(suffix, #suffix - i) then
return text
end
i = i + 1
end
return string.sub(text, 1, -#suffix - 1)
end
---trim
---@param text string
---@return string
str.trim = function(text)
local s = 1
for i = 1, #text do
if not char.is_white(string.byte(text, i)) then
s = i
break
end
end
local e = #text
for i = #text, 1, -1 do
if not char.is_white(string.byte(text, i)) then
e = i
break
end
end
if s == 1 and e == #text then
return text
end
return string.sub(text, s, e)
end
---get_word
---@param text string
---@param stop_char integer
---@param min_length integer
---@return string
str.get_word = function(text, stop_char, min_length)
min_length = min_length or 0
local has_alnum = false
local stack = {}
local word = {}
local add = function(c)
table.insert(word, string.char(c))
if stack[#stack] == c then
table.remove(stack, #stack)
else
if PAIRS[c] then
table.insert(stack, c)
end
end
end
for i = 1, #text do
local c = string.byte(text, i, i)
if #word < min_length then
table.insert(word, string.char(c))
elseif not INVALIDS[c] then
add(c)
has_alnum = has_alnum or char.is_alnum(c)
elseif not has_alnum then
add(c)
elseif #stack ~= 0 then
add(c)
if has_alnum and #stack == 0 then
break
end
else
break
end
end
if stop_char and word[#word] == string.char(stop_char) then
table.remove(word, #word)
end
return table.concat(word, '')
end
---Oneline
---@param text string
---@return string
str.oneline = function(text)
for i = 1, #text do
if string.byte(text, i) == NR_BYTE then
return string.sub(text, 1, i - 1)
end
end
return text
end
---Escape special chars
---@param text string
---@param chars string[]
---@return string
str.escape = function(text, chars)
table.insert(chars, '\\')
local escaped = {}
local i = 1
while i <= #text do
local c = string.sub(text, i, i)
if vim.tbl_contains(chars, c) then
table.insert(escaped, '\\')
table.insert(escaped, c)
else
table.insert(escaped, c)
end
i = i + 1
end
return table.concat(escaped, '')
end
return str
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