100 lines
2.5 KiB
Scheme
100 lines
2.5 KiB
Scheme
;;
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;; util-git.scm
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;;
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;; Support for simple git integration.
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;;
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;; ISC License
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;;
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;; Copyright 2023 Brmlab, z.s.
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;; Dominik Pantůček <dominik.pantucek@trustica.cz>
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;;
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;; Permission to use, copy, modify, and/or distribute this software
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;; for any purpose with or without fee is hereby granted, provided
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;; that the above copyright notice and this permission notice appear
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;; in all copies.
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;;
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;; THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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;; WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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;; WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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;; AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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;; CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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;; OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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;; NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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;; CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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;;
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(declare (unit util-git))
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(module
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util-git
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(
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git
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git-status
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)
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(import scheme
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(chicken base)
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util-io
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util-dict-list)
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;; Valid git operating modes
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(define git-modes
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'((#:exit exit)
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(#:output output)
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(#:exit+output exit+output)))
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;; Used for actual invocation of git binary, returns two values: exit
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;; code and output lines
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(define (invoke-git repo args)
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(apply get-process-exit+output-lines
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"git"
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"-C"
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repo
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args))
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;; Curried git repo command wrapper
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(define (git repo . defargs)
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(let ((defmode (if (null? defargs)
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'output
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;; Raises an error if not valid
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(cadr (assq (car defargs) git-modes)))))
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(case defmode
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((exit)
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(lambda args
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(let-values (((exit-code _)
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(invoke-git repo args)))
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exit-code)))
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((output)
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(lambda args
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(let-values (((_ output)
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(invoke-git repo args)))
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output)))
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((exit+output)
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(lambda args
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(invoke-git repo args))))))
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;; Known status types
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(define git-status-types
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'((" M" 'modified)
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("??" 'untracked)))
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;; Returns a dictionary of unknown, modified, deleted and added files
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(define (git-status repo)
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(let* ((lines ((git repo) 'status '--porcelain))
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(clean? (null? lines)))
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(let loop ((lines lines)
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(res (make-ldict `((clean . ,clean?)))))
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(if (null? lines)
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res
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(let* ((line (car lines))
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(st (substring line 0 2))
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(fname (substring line 4))
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(status (or (assoc st git-status-types)
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'unknown)))
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(loop (cdr lines)
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(ldict-set res
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status
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(cons fname
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(ldict-ref res status '())))))))))
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)
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