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(module (jimmy util) *
(import scheme (chicken base)
(chicken condition)
(chicken file)
(chicken irregex)
(chicken process-context)
(chicken string)
(srfi 1)
utf8-srfi-13)
(define-syntax define-public
(syntax-rules ()
((define-public (name . arg) forms ...)
(begin (export name)
(define (name . arg) forms ...)))
((define-public (name args ...) forms ...)
(begin (export name)
(define (name args ...) forms ...)))
((define-public name value)
(begin (export name)
(define name value)))))
(define-syntax ignore-errors
(syntax-rules ()
((ignore-errors x)
(handle-exceptions e #f x))))
(define (alist-walk lis . keys)
(if (null? keys)
lis
(let ((kv (assoc (car keys) lis)))
(cond
((not kv) #f)
((atom? (cdr kv))
(and (null? (cdr keys)) ; this shouldn't error...
(cdr kv)))
((list? (cdr kv))
(apply alist-walk (cdr kv) (cdr keys)))))))
(define (flush-lines-left lines)
(irregex-replace/all '(: bol (* space))
(string-join lines) ""))
(define (join-lines lines)
(apply string-append lines))
(define (find-command command . dirs)
(define (find-command-in-dir dir)
(and (directory-exists? dir)
(find-files dir
limit: 0
test: `(: (* any) "/" ,command eos))))
(define path+
(append (string-split (get-environment-variable "PATH") ":") dirs))
(define found
(filter file-executable?
(apply append (filter-map find-command-in-dir path+))))
(if (pair? found) (car found) #f))
(define (ensure-newline str)
(if (string-suffix? "\n" str)
str
(string-append str "\n")))
)
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