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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
53 lines
1.3 KiB
Plaintext
53 lines
1.3 KiB
Plaintext
;; content-on-sx — tree-wide block transforms.
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;;
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;; The write counterpart to query: apply a function to every matching block
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;; across the tree (descending into sections), returning a new document. For
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;; bulk edits — rewrite image srcs, bump heading levels, sanitise text. Tree
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;; detection/rebuild is inline (class + st-iv-get/set!) so this needs no
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;; section.sx. Immutable.
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;;
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;; Requires (loaded by harness): block.sx, doc.sx.
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(define
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xf-section?
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(fn (b) (and (st-instance? b) (= (get b :class) "CtSection"))))
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(define
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block-tree-transform
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(fn
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(blocks pred f)
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(map
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(fn
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(b)
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(let
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((nb (if (pred b) (f b) b)))
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(if
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(xf-section? nb)
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(let
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((ch (st-iv-get nb "children")))
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(if
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(list? ch)
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(st-iv-set! nb "children" (block-tree-transform ch pred f))
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nb))
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nb)))
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blocks)))
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(define
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content/map-blocks
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(fn
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(doc pred f)
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(doc-with-blocks doc (block-tree-transform (doc-blocks doc) pred f))))
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(define
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content/map-type
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(fn
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(doc type f)
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(content/map-blocks doc (fn (b) (= (blk-type b) type)) f)))
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;; convenience: set a field on every block of a type.
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(define
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content/set-field-on
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(fn
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(doc type field value)
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(content/map-type doc type (fn (b) (blk-set b field value)))))
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