Would a kind soul please help me get started with a simple job task.
Below job runs but returns the last record from my data file for all six lines in the data file.
The print statements echo that it is working as I expect up until the table.insert command
I have looked thru both PiL and Beginning Lua Programming and cannot find how to properly do this simple task.
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-- lines from input file d1dat.txt:
-- one|123|aaa
-- one|123|a
-- two|45|a
-- three|6789|b
-- on1|123|b
-- tw1|45|c
-- th1|6789|c
io.input ('d1dat.txt')
io.output ('d1dat.out')
l= '_' -- scalar -- a line (char) from input file
rows= {} -- a list ie int,val_l -- use ipairs
cols= {} -- a hash ie nam,val -- use pairs
dsn1= {} -- a list ie int,tbl -- use ipairs
for l in io.lines()
do rows[#rows+1]= l
end
for _,v in ipairs(rows)
do local a = '_'
local b = 0
local c= '_'
a,b,c= string.match (v, "(%w+)|(%d+)|(%w+)") -- parse the line
print (a,b,c)
cols['v1']= a -- populate the hash (table)
cols['v2']= b
cols['v3']= c
for kc,vc in pairs (cols) do print(kc,vc) end
table.insert (dsn1, cols)
-- dsn1 [ #dsn1+1 ]= cols -- gives same result: every row in dsn1 is the last row from input file
end
for k,v in ipairs (dsn1)
do io.write (k ,'-' ,v.v1 ,'-' ,v.v2 ,'-' ,v.v3 ,'\n')
end
-- d1dat.out:
-- 1-th1-6789-c
-- 2-th1-6789-c
-- 3-th1-6789-c
-- 4-th1-6789-c
-- 5-th1-6789-c
-- 6-th1-6789-c
