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api: implement nvim_buf_get_offset_for_line

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Like line2byte, but works for any buffer, and uses zero-based
indexing (API conventions).
This commit is contained in:
Björn Linse
2018-10-30 23:20:23 +01:00
parent 11b438eb66
commit 281da0dd59
2 changed files with 70 additions and 0 deletions
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34
test/functional/api/buffer_spec.lua
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@@ -301,6 +301,40 @@ describe('api/buf', function()
end)
end)
describe('get_offset_for_line', function()
local get_offset_for_line = curbufmeths.get_offset_for_line
it('works', function()
curbufmeths.set_lines(0,-1,true,{'Some','exa\000mple', '', 'text'})
eq(4, curbufmeths.line_count())
eq(0, get_offset_for_line(0))
eq(5, get_offset_for_line(1))
eq(14, get_offset_for_line(2))
eq(15, get_offset_for_line(3))
eq(20, get_offset_for_line(4))
eq({false,'Index out of bounds'}, meth_pcall(get_offset_for_line, 5))
eq({false,'Index out of bounds'}, meth_pcall(get_offset_for_line, -1))
curbufmeths.set_option('eol', false)
curbufmeths.set_option('fixeol', false)
eq(19, get_offset_for_line(4))
curbufmeths.set_option('fileformat', 'dos')
eq(0, get_offset_for_line(0))
eq(6, get_offset_for_line(1))
eq(16, get_offset_for_line(2))
eq(18, get_offset_for_line(3))
eq(22, get_offset_for_line(4))
curbufmeths.set_option('eol', true)
eq(24, get_offset_for_line(4))
command("set hidden")
command("enew")
eq(6, bufmeths.get_offset_for_line(1,1))
command("bunload! 1")
eq(-1, bufmeths.get_offset_for_line(1,1))
end)
end)
describe('{get,set,del}_var', function()
it('works', function()
curbuf('set_var', 'lua', {1, 2, {['3'] = 1}})