Text processing/2: Difference between revisions

<lang Nim>

import strutils, tables

var badRecords: int # the number of records that have invalid formatted values

var totalRecords: int # the total number of records in the file

var badInstruments: int # the total number of records that have at least one instrument showing error

var seenDates = newTable[string,bool]() # table that keeps track of what dates we have seen

# ensure we can parse all records as floats (except the date stamp)

proc checkFloats(floats:seq[string]): bool =

for index in 1..NumFields-1:

# we're assuming all instrument flags are floats not integers

# ensure that all sensor flags are ok

#flags start at index 2, and occur every 2 fields

for index in countup(2,NumFields,2):

# we're assuming all instrument flags are floats not integers

# Note: we're not checking the format of the date stamp

# main

var lines = readFile("readings.txt")

var currentLine: int

for line in lines.splitLines:

#empty lines don't count as records

if line.len == 0: continue

var tokens = line.split({' ','\t'})

if tokens.len != NumFields:

var goodRecords = totalRecords - badRecords

var goodInstruments = goodRecords - badInstruments

echo "Total Records:", totalRecords

echo "Good Records:", goodRecords

echo "Records where all instuments were OK:", goodInstruments

</lang>