34 lines
1.2 KiB
Scheme
34 lines
1.2 KiB
Scheme
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(define-module (ryan-config utils)
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#:use-module (gnu packages)
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#:use-module (gnu services)
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#:use-module (gnu home services)
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#:use-module (gnu home services shepherd)
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#:use-module (gnu packages freedesktop)
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#:use-module (gnu services configuration)
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#:use-module (guix gexp)
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#:use-module (ice-9 regex)
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#:use-module (ice-9 pretty-print)
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#:use-module (ice-9 textual-ports)
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#:export (gather-manifest-packages
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apply-template-file))
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(define (apply-template template-string value-alist)
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(regexp-substitute/global #f
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"\\$\\{([A-Za-z/\\-]+)\\}"
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template-string
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'pre
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(lambda (m)
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(let ((entry (assq (string->symbol (match:substring m 1))
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value-alist)))
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(if entry
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(cdr entry)
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"VALUE NOT FOUND")))
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'post))
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(define (apply-template-file file-path value-alist)
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(call-with-input-file file-path
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(lambda (port)
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(apply-template (get-string-all port)
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value-alist))))
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