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api: begin a web API server with examples (#316)

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into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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Beginnings of a web API server, and a series of simple client-side web app examples.
This is an alternative to hledger-web, and for variety and research uses servant instead of yesod.

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% hledger-api(1)
%
% January 2016
# NAME
hledger-api - web API server for the hledger accounting tool
# SYNOPSIS
`hledger-api [OPTIONS]`\
`hledger api -- [OPTIONS]`
# DESCRIPTION
hledger is a cross-platform program for tracking money, time, or any other commodity,
using double-entry accounting and a simple, editable file format.
hledger is inspired by and largely compatible with ledger(1).
hledger-api is a simple web API server, intended to support
client-side web apps operating on hledger data. It comes with a series
of simple client-side app examples, which drive it's evolution.
Data is served from the usual hledger journal file:
`~/.hledger.journal`, `$LEDGER_FILE`, or another file specified with -f.
For more about the format, see hledger(1) or hledger_journal(5).
The server listens for requests on port ...
Note there is no built-in access control, so you will need to hide
hledger-api behind an authenticating proxy if you want to restrict
access.
<!-- With journal and timelog files (but not CSV files, currently) -->
<!-- the web app detects changes and will show the new data on the next request. -->
<!-- If a change makes the file unparseable, hledger-api will show an error -->
<!-- until the file has been fixed. -->
<!-- # OPTIONS -->
<!-- Note: if invoking hledger-web as a hledger subcommand, write `--` before options as shown above. -->
<!-- `--port=PORT` -->
<!-- : set the TCP port to listen on (default: 5000) -->
<!-- `-h --help` -->
<!-- : show help -->
<!-- `--version` -->
<!-- : show version information -->
<!-- ## hledger options: -->
<!-- The following common hledger options should also work: -->
<!-- `-f FILE --file=FILE` -->
<!-- : use a different input file. For stdin, use - -->
<!-- `--rules-file=RULESFILE` -->
<!-- : Conversion rules file to use when reading CSV (default: FILE.rules) -->
<!-- `--alias=OLD=NEW` -->
<!-- : display accounts named OLD as NEW -->
<!-- `--ignore-assertions` -->
<!-- : ignore any failing balance assertions in the journal -->
<!-- `--debug=N` -->
<!-- : show debug output if N is 1-9 (default: 0) -->
<!-- `-b --begin=DATE` -->
<!-- : include postings/txns on or after this date -->
<!-- `-e --end=DATE` -->
<!-- : include postings/txns before this date -->
<!-- `-p --period=PERIODEXP` -->
<!-- : set start date, end date, and/or reporting interval all at once (overrides the flags above) -->
<!-- `--date2 --aux-date` -->
<!-- : use postings/txns' secondary dates instead -->
<!-- `-C --cleared` -->
<!-- : include only cleared postings/txns -->
<!-- `--pending` -->
<!-- : include only pending postings/txns -->
<!-- `-U --uncleared` -->
<!-- : include only uncleared (and pending) postings/txns -->
<!-- `-R --real` -->
<!-- : include only non-virtual postings -->
<!-- `--depth=N` -->
<!-- : hide accounts/postings deeper than N -->
<!-- `-E --empty` -->
<!-- : show empty/zero things which are normally omitted -->
<!-- `-B --cost` -->
<!-- : show amounts in their cost price's commodity -->
# ENVIRONMENT
**LEDGER_FILE**
sets the default journal file path. If not set, it is `~/.hledger.journal`.
# FILES
Reads data from a hledger journal file (`$LEDGER_FILE` or
`~/.hledger.journal` by default), or a CSV file plus associated CSV
rules file.
# BUGS
The need to precede options with `--` when invoked from hledger is awkward.
<!-- `-f-` doesn't work (hledger-web can't read from stdin). -->
<!-- Query arguments and some applicable hledger options probably aren't supported. -->
<!-- Does not work in text-mode browsers. -->
<!-- Does not work well on small screens. -->
<!-- The auto-exit feature was added to avoid leaving stray processes, eg on Windows. -->
<!-- It is not well tested. -->
<!-- If you start two instances on the same port, the second one will -->
<!-- appear to run normally, but you will be seeing pages served from the -->
<!-- first one. -->

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-- This file has been generated from package.yaml by hpack version 0.5.4.
--
-- see: https://github.com/sol/hpack
name: hledger-api
version: 0.27.98
synopsis: Web API server for the hledger accounting tool
description: This is a simple web API server for hledger data.
It comes with a series of simple client-side web app examples.
.
hledger is a cross-platform program for tracking money, time, or
any other commodity, using double-entry accounting and a simple,
editable file format. It is inspired by and largely compatible
with ledger(1). hledger provides command-line, curses and web
interfaces, and aims to be a reliable, practical tool for daily
use.
category: Finance
stability: alpha
homepage: http://hledger.org
bug-reports: http://bugs.hledger.org
author: Simon Michael <simon@joyful.com>
maintainer: Simon Michael <simon@joyful.com>
license: GPL
build-type: Simple
cabal-version: >= 1.10
extra-source-files:
CHANGES
source-repository head
type: git
location: https://github.com/simonmichael/hledger
executable hledger-api
main-is: hledger-api.hs
ghc-options: -threaded
cpp-options: -DVERSION="0.27.98"
build-depends:
hledger-lib == 0.27
, hledger == 0.27
, base >= 4 && < 5
default-language: Haskell2010

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main :: IO ()
main = putStrLn "hledger-api ok"

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# hpack specification for generating the cabal file
# https://github.com/sol/hpack#readme
# http://www.haskell.org/cabal/release/cabal-latest/doc/users-guide/authors.html
#
# as of hpack 0.5.4 these must be added manually:
# - tested-with
# - flags
# - benchmarks
# - conditional blocks
name : hledger-api
version : '0.27.98'
stability : alpha
category : Finance
synopsis : Web API server for the hledger accounting tool
description : |
This is a simple web API server for hledger data.
It comes with a series of simple client-side web app examples.
hledger is a cross-platform program for tracking money, time, or
any other commodity, using double-entry accounting and a simple,
editable file format. It is inspired by and largely compatible
with ledger(1). hledger provides command-line, curses and web
interfaces, and aims to be a reliable, practical tool for daily
use.
license : GPL
author : Simon Michael <simon@joyful.com>
maintainer : Simon Michael <simon@joyful.com>
github : simonmichael/hledger
homepage : http://hledger.org
bug-reports : http://bugs.hledger.org
# tested-with : GHC==7.10.3
extra-source-files:
- CHANGES
- examples/
# XXX not supported
# flag threaded
# Description: Build with support for multithreaded execution
# Default: True
# flag dev
# Description: Turn on development settings, like auto-reload templates.
# Default: False
# flag library-only
# Description: Build for use with "yesod devel"
# Default: False
# flag old-locale
# description: A compatibility flag, set automatically by cabal.
# If false then depend on time >= 1.5,
# if true then depend on time < 1.5 together with old-locale.
# default: False
# dependencies:
# - hledger-lib == 0.27
# - hledger == 0.27
# - base >= 4 && < 5
# - base-compat >= 0.8.1
# - blaze-html
# - blaze-markup
# - bytestring
# - clientsession
# - cmdargs >= 0.10 && < 0.11
# - data-default
# - directory
# - filepath
# - hjsmin
# - http-conduit
# - http-client
# - HUnit
# - conduit-extra >= 1.1
# - parsec >= 3
# - safe >= 0.2
# - shakespeare >= 2.0
# - template-haskell
# - text
# - transformers
# - wai
# - wai-extra
# - wai-handler-launch >= 1.3
# - warp
# - yaml
# - json
# # if flag(old-locale)
# # build-depends: time < 1.5, old-locale
# # else
# # build-depends: time >= 1.5
# - time >= 1.5
# ghc-options:
# -Wall
# -fno-warn-unused-do-bind
# -fno-warn-name-shadowing
# -fno-warn-missing-signatures
# -fno-warn-type-defaults
# -fno-warn-orphans
# XXX not supported
# extensions:
# CPP
# MultiParamTypeClasses
# NoImplicitPrelude
# OverloadedStrings
# QuasiQuotes
# RecordWildCards
# TemplateHaskell
# TypeFamilies
# # -- seem to not be needed at present:
# # -- GADTs
# # -- GeneralizedNewtypeDeriving
# # -- FlexibleContexts
# # -- EmptyDataDecls
# # -- NoMonomorphismRestriction
cpp-options: -DVERSION="0.27.98"
# XXX
# if flag(dev) || flag(library-only)
# cpp-options: -DDEVELOPMENT
# library:
# # source-dirs: . # XXX includes Setup and uncommitted stuff
# exposed-modules:
# - Lib
# tests:
# test:
# source-dirs: tests
# main: test.hs
# dependencies:
# - hledger-api
# - hspec
# - yesod-test
executables:
hledger-api:
# XXX
# if flag(library-only)
# buildable: False
# if flag(threaded)
# ghc-options: -threaded
ghc-options:
-threaded
# if flag(dev)
# ghc-options: -O0
# source-dirs: app
main: hledger-api.hs
dependencies:
- hledger-lib == 0.27
- hledger == 0.27
- base >= 4 && < 5

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- hledger
- hledger-ui
- hledger-web
- hledger-api
#flags: