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csv.lua: rename anchor_pos to field_start

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Geoff Leyland 2014-05-26 17:51:54 +12:00
parent 0daa2ae5d7
commit e2ea3d2f1a
1 changed files with 11 additions and 11 deletions
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22
lua/csv.lua
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@ -151,7 +151,7 @@ end
local function separated_values_iterator(file, parameters)
local buffer_size = parameters.buffer_size or DEFAULT_BUFFER_SIZE
local buffer = ""
local anchor_pos = 1
local field_start = 1
local line_start = 1
@ -160,7 +160,7 @@ local function separated_values_iterator(file, parameters)
if p > buffer_size then
local remove = math.floor((p-1) / buffer_size) * buffer_size
buffer = buffer:sub(remove + 1)
anchor_pos = anchor_pos - remove
field_start = field_start - remove
line_start = line_start - remove
end
end
@ -215,21 +215,21 @@ local function separated_values_iterator(file, parameters)
local function advance(n)
anchor_pos = anchor_pos + n
truncate(anchor_pos)
field_start = field_start + n
truncate(field_start)
end
local function field_sub(a, b)
b = b == -1 and b or b + anchor_pos - 1
return sub(a + anchor_pos - 1, b)
b = b == -1 and b or b + field_start - 1
return sub(a + field_start - 1, b)
end
local function field_find(pattern, init)
local f, l, c = find(pattern, init + anchor_pos - 1)
local f, l, c = find(pattern, init + field_start - 1)
if not f then return end
return f - anchor_pos + 1, l - anchor_pos + 1, c
return f - field_start + 1, l - field_start + 1, c
end
@ -248,7 +248,7 @@ local function separated_values_iterator(file, parameters)
while true do
local field_start_line = line
local field_start_column = anchor_pos - line_start + 1
local field_start_column = field_start - line_start + 1
local field_end, sep_end, this_sep
local tidy
@ -284,7 +284,7 @@ local function separated_values_iterator(file, parameters)
value = value:gsub("\r\n", "\n"):gsub("\r", "\n")
for nl in value:gmatch("\n()") do
line = line + 1
line_start = nl + anchor_pos
line_start = nl + field_start
end
value = tidy(value)
@ -329,7 +329,7 @@ local function separated_values_iterator(file, parameters)
sep_end = sep_end + 1
end
line = line + 1
line_start = anchor_pos + sep_end
line_start = field_start + sep_end
end
advance(sep_end)