78 lines
2.5 KiB
Haskell
Executable File
78 lines
2.5 KiB
Haskell
Executable File
#!/usr/bin/env stack
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-- stack runghc --verbosity info --package hledger --package string-qq
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--resolver nightly-2022-07-10
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{-
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hledger-addon-example - a hledger addon command template.
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This an example of an addon command (an executable named hledger-*).
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By default it reads your default journal and prints the number of
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transactions. It supports many of the usual hledger options; run it
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with -h/--help to see them. When you want to create a new hledger
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command, save this script under a new name, somewhere in $PATH,
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keeping it executable, and start tweaking the code.
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Requirements:
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This is a stack script, requiring stack to run. hledger addons do not
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have to be stack scripts, but this one is, as they work well for this.
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If you prefer you can adapt it to be a cabal script, or you can
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install the required haskell libraries (see above) and then
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run/compile it with a suitable runghc/ghc command.
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The script may require specific versions of the libraries.
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If run/compiled from inside the hledger source tree, it will use that hledger
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version and the libs of the stackage resolver in stack.yaml.
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If run/compiled from outside the hledger source tree, it will use the hledger
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and libs of the resolver in ~/.stack/global-project/stack.yaml.
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Or you can uncomment --resolver above to use another resolver.
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Usage:
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Executing this script will cause stack to run it in interpreted mode:
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$ hledger-addon-example.hs
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Or you can compile first:
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$ stack ghc hledger-addon-example.hs --package hledger --package string-qq
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$ hledger-addon-example
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Whether compiled or not, you can also run it as a hledger subcommand, if it is in $PATH:
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$ hledger addon-example
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-}
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{-# LANGUAGE NamedFieldPuns #-}
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{-# LANGUAGE QuasiQuotes #-}
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{-# LANGUAGE RecordWildCards #-}
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import Data.String.QQ (s)
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import Text.Printf
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import Hledger
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import Hledger.Cli
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------------------------------------------------------------------------------
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cmdmode = hledgerCommandMode
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[s| addon-example
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Print the number of transactions in the journal.
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_FLAGS
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|]
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[]
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[generalflagsgroup1]
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[]
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([], Nothing) -- Just $ argsFlag "[QUERY]")
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------------------------------------------------------------------------------
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main :: IO ()
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main = do
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opts@CliOpts{reportspec_=rspec} <- getHledgerCliOpts cmdmode
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withJournalDo opts $ \j -> do
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d <- getCurrentDay
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let
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q = _rsQuery rspec
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ts = filter (q `matchesTransaction`) $ jtxns $ journalApplyValuationFromOpts rspec j
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printf "File %s: %d transactions\n" (journalFilePath j) (length ts)
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