Hledger.Read.RulesReader

hledger-lib-1.41: A library providing the core functionality of hledger

Safe Haskell | None
Language | Haskell2010

Hledger.Read.RulesReader

Contents

- Reader
- Misc.
- Tests
- Orphan instances

Description

A reader for a CSV rules file. This reads the actual data from a file specified by a `source` rule or from a similarly-named file in the same directory.

Most of the code for reading rules files and csv files is in this module.

Synopsis

- reader :: forall (m :: Type -> Type). MonadIO m => Reader m
- readJournalFromCsv :: Maybe (Either CsvRules FilePath) -> FilePath -> Text -> Maybe SepFormat -> ExceptT String IO Journal
- dataFileFor :: FilePath -> Maybe FilePath
- rulesFileFor :: FilePath -> FilePath
- parseBalanceAssertionType :: String -> Maybe (Bool, Bool)
- tests_RulesReader :: TestTree

# Reader

reader :: forall (m :: Type -> Type). MonadIO m => Reader m #

# Misc.

readJournalFromCsv :: Maybe (Either CsvRules FilePath) -> FilePath -> Text -> Maybe SepFormat -> ExceptT String IO Journal #

Read a Journal from the given CSV data (and filename, used for error messages), or return an error. Proceed as follows:

1. Conversion rules are provided, or they are parsed from the specified rules file, or from the default rules file for the CSV data file. If rules parsing fails, or the required rules file does not exist, throw an error.
2. Parse the CSV data using the rules, or throw an error.
3. Convert the CSV records to hledger transactions using the rules.
4. Return the transactions as a Journal.

dataFileFor :: FilePath -> Maybe FilePath #

Given a rules file path, what would be the corresponding data file ? (Remove a .rules extension.)

rulesFileFor :: FilePath -> FilePath #

Given a csv file path, what would be the corresponding rules file ? (Add a .rules extension.)

parseBalanceAssertionType :: String -> Maybe (Bool, Bool) #

Detect from a balance assertion's syntax (=, ==, =*, ==*) whether it is (a) total (multi-commodity) and (b) subaccount-inclusive. Returns nothing if invalid syntax was provided.

# Tests

tests_RulesReader :: TestTree #

# Orphan instances

ShowErrorComponent String # |
Instance details Methods showErrorComponent :: String -> String # errorComponentLen :: String -> Int #