19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
;;======================================================================
(declare (unit env))
(use sql-de-lite) ;; srfi-1 posix regex regex-case srfi-69 srfi-18 call-with-environment-variables)
(define (env:open-db fname)
(let* ((db-exists (common:file-exists? fname))
(exec (sql db "CREATE TABLE envvars (
id INTEGER PRIMARY KEY,
context TEXT NOT NULL,
var TEXT NOT NULL,
val TEXT NOT NULL,
CONSTRAINT envvars_constraint UNIQUE (context,var))"))))
(set-busy-handler! db (busy-timeout 10000))
db))
;; save vars in given context, this is NOT incremental by default
;;
(define (env:save-env-vars db context #!key (incremental #f)(vardat #f))
(with-transaction
|
>
>
|
|
|
|
|
|
|
|
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
;;======================================================================
(declare (unit env))
(use sql-de-lite) ;; srfi-1 posix regex regex-case srfi-69 srfi-18 call-with-environment-variables)
(define (env:open-db fname)
(let* ((db-exists (if (equal? fname ":memory:")
#f
(common:file-exists? fname)))
(db (open-database fname)))
(if (not db-exists)
(begin
(exec (sql db "CREATE TABLE IF NOT EXISTS envvars (
id INTEGER PRIMARY KEY,
context TEXT NOT NULL,
var TEXT NOT NULL,
val TEXT NOT NULL,
CONSTRAINT envvars_constraint UNIQUE (context,var))"))))
(set-busy-handler! db (busy-timeout 10000))
db))
;; save vars in given context, this is NOT incremental by default
;;
(define (env:save-env-vars db context #!key (incremental #f)(vardat #f))
(with-transaction
|
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
(let ((sep (cadr (assoc var paths))))
(env:merge-path-envvar sep (hash-table-ref result var) val))
val)))))
(sql db "SELECT var,val FROM envvars WHERE context=?")
context))
contexts)
result))
;; get list of removed variables between two contexts
;;
(define (env:get-removed db contexta contextb)
(let ((result (make-hash-table)))
(query
(for-each-row
|
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
|
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
(let ((sep (cadr (assoc var paths))))
(env:merge-path-envvar sep (hash-table-ref result var) val))
val)))))
(sql db "SELECT var,val FROM envvars WHERE context=?")
context))
contexts)
result))
;; envdelta: a-b (start=a, end=b, get the delta)
;; ofile: #f = write to stdout, else write to file with string name
;;
(define (env:envdelta db envdelta ofile)
(let ((match (string-split envdelta "-")));; (string-match "([a-z0-9_]+)=([a-z0-9_\\-,]+)" envdelta)))
(if (not (null? match))
(let* ((parts match) ;; (string-split equn "-"))
(minuend (car parts))
(subtraend (cadr parts))
(added (env:get-added db minuend subtraend))
(removed (env:get-removed db minuend subtraend))
(changed (env:get-changed db minuend subtraend)))
;; (pp (hash-table->alist added))
;; (pp (hash-table->alist removed))
;; (pp (hash-table->alist changed))
(if (args:get-arg "-o")
(with-output-to-file
(args:get-arg "-o")
(lambda ()
(env:print added removed changed)))
(env:print added removed changed)))
#f)))
;; get list of removed variables between two contexts
;;
(define (env:get-removed db contexta contextb)
(let ((result (make-hash-table)))
(query
(for-each-row
|