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GHC 10.0.0.20260917 · lts/ghc-10.0.x · 8fef28d · 2026-11-02

Modulehledger-lib-1.52.4GHC2021

Hledger.Data.StringFormat

Parse format strings provided by --format, with awareness of hledger's report item fields. The formats are used by report-specific renderers like renderBalanceReportItem.

Synopsis
  • Packagehledger-lib-1.52.4
  • Exports7
  • LanguageGHC2021
  • LicenceGPL-3.0-or-later
  • SourceStringFormat.hs
datadata StringFormat

A format specification/template to use when rendering a report line item as text.

A format is a sequence of components; each is either a literal string, or a hledger report item field with specified width and justification whose value will be interpolated at render time.

A component's value may be a multi-line string (or a multi-commodity amount), in which case the final string will be either single-line or a top or bottom-aligned multi-line string depending on the StringFormat variant used.

Currently this is only used in the balance command's single-column mode, which provides a limited StringFormat renderer.

Constructors

Instances3Eq, Show, Default

Constructors

  • FormatLiteral Text

    Literal text to be rendered as-is

  • FormatField Bool (Maybe Int) (Maybe Int) ReportItemField

    A data field to be formatted and interpolated. Parameters:

    • Left justify ? Right justified if false

    • Minimum width ? Will be space-padded if narrower than this

    • Maximum width ? Will be clipped if wider than this

    • Which of the standard hledger report item fields to interpolate

Instances2Eq, Show

An id identifying which report item field to interpolate. These are drawn from several hledger report types, so are not all applicable for a given report.

Constructors

  • AccountField

    A posting or balance report item's account name

  • DefaultDateField

    A posting or register or entry report item's date

  • DescriptionField

    A posting or register or entry report item's description

  • TotalField

    A balance or posting report item's balance or running total. Always rendered right-justified.

  • DepthSpacerField

    A balance report item's indent level (which may be different from the account name depth). Rendered as this number of spaces, multiplied by the minimum width spec if any.

  • FieldNo Int

    A report item's nth field. May be unimplemented.

Instances2Eq, Show