diff options
Diffstat (limited to 'guix')
| -rw-r--r-- | guix/scripts/package.scm | 107 | ||||
| -rw-r--r-- | guix/ui.scm | 68 |
2 files changed, 175 insertions, 0 deletions
diff --git a/guix/scripts/package.scm b/guix/scripts/package.scm index 862b82612a..98b8aedfc9 100644 --- a/guix/scripts/package.scm +++ b/guix/scripts/package.scm @@ -34,6 +34,7 @@ #:use-module (ice-9 vlist) #:use-module (srfi srfi-1) #:use-module (srfi srfi-11) + #:use-module (srfi srfi-19) #:use-module (srfi srfi-26) #:use-module (srfi srfi-34) #:use-module (srfi srfi-37) @@ -243,6 +244,74 @@ all of PACKAGES, a list of name/version/output/path/deps tuples." (switch-link))) (else (switch-link))))) ; anything else +(define (generation-time profile number) + "Return the creation time of a generation in the UTC format." + (make-time time-utc 0 + (stat:ctime (stat (format #f "~a-~a-link" profile number))))) + +(define* (matching-generations str #:optional (profile %current-profile)) + "Return the list of available generations matching a pattern in STR. See +'string->generations' and 'string->duration' for the list of valid patterns." + (define (valid-generations lst) + (define (valid-generation? n) + (any (cut = n <>) (generation-numbers profile))) + + (fold-right (lambda (x acc) + (if (valid-generation? x) + (cons x acc) + acc)) + '() + lst)) + + (define (filter-generations generations) + (match generations + (() '()) + (('>= n) + (drop-while (cut > n <>) + (generation-numbers profile))) + (('<= n) + (valid-generations (iota n 1))) + ((lst ..1) + (valid-generations lst)) + (_ #f))) + + (define (filter-by-duration duration) + (define (time-at-midnight time) + ;; Return TIME at midnight by setting nanoseconds, seconds, minutes, and + ;; hours to zeros. + (let ((d (time-utc->date time))) + (date->time-utc + (make-date 0 0 0 0 + (date-day d) (date-month d) + (date-year d) (date-zone-offset d))))) + + (define generation-ctime-alist + (map (lambda (number) + (cons number + (time-second + (time-at-midnight + (generation-time profile number))))) + (generation-numbers profile))) + + (match duration + (#f #f) + (res + (let ((s (time-second + (subtract-duration (time-at-midnight (current-time)) + duration)))) + (delete #f (map (lambda (x) + (and (<= s (cdr x)) + (first x))) + generation-ctime-alist)))))) + + (cond ((string->generations str) + => + filter-generations) + ((string->duration str) + => + filter-by-duration) + (else #f))) + (define (find-packages-by-description rx) "Search in SYNOPSIS and DESCRIPTION using RX. Return a list of matching packages." @@ -438,6 +507,9 @@ Install, remove, or upgrade PACKAGES in a single transaction.\n")) --roll-back roll back to the previous generation")) (display (_ " --search-paths display needed environment variable definitions")) + (display (_ " + -l, --list-generations[=PATTERN] + list generations matching PATTERN")) (newline) (display (_ " -p, --profile=PROFILE use PROFILE instead of the user's default profile")) @@ -497,6 +569,10 @@ Install, remove, or upgrade PACKAGES in a single transaction.\n")) (option '("roll-back") #f #f (lambda (opt name arg result) (alist-cons 'roll-back? #t result))) + (option '(#\l "list-generations") #f #t + (lambda (opt name arg result) + (cons `(query list-generations ,(or arg "")) + result))) (option '("search-paths") #f #f (lambda (opt name arg result) (cons `(query search-paths) result))) @@ -876,6 +952,37 @@ more information.~%")) ;; actually processed, #f otherwise. (let ((profile (assoc-ref opts 'profile))) (match (assoc-ref opts 'query) + (('list-generations pattern) + (define (list-generation number) + (begin + (format #t "Generation ~a\t~a~%" number + (date->string + (time-utc->date + (generation-time profile number)) + "~b ~d ~Y ~T")) + (for-each (match-lambda + ((name version output location _) + (format #t " ~a\t~a\t~a\t~a~%" + name version output location))) + (manifest-packages + (profile-manifest + (format #f "~a-~a-link" profile number)))) + (newline))) + + (cond ((not (file-exists? profile)) ; XXX: race condition + (leave (_ "profile '~a' does not exist~%") + profile)) + ((string-null? pattern) + (for-each list-generation + (generation-numbers profile))) + ((matching-generations pattern profile) + => + (cut for-each list-generation <>)) + (else + (leave (_ "invalid syntax: ~a~%") + pattern))) + #t) + (('list-installed regexp) (let* ((regexp (and regexp (make-regexp regexp))) (manifest (profile-manifest profile)) diff --git a/guix/ui.scm b/guix/ui.scm index 293730308e..4415997252 100644 --- a/guix/ui.scm +++ b/guix/ui.scm @@ -28,12 +28,14 @@ #:use-module ((guix licenses) #:select (license? license-name)) #:use-module (srfi srfi-1) #:use-module (srfi srfi-11) + #:use-module (srfi srfi-19) #:use-module (srfi srfi-26) #:use-module (srfi srfi-34) #:use-module (srfi srfi-37) #:autoload (ice-9 ftw) (scandir) #:use-module (ice-9 match) #:use-module (ice-9 format) + #:use-module (ice-9 regex) #:export (_ N_ leave @@ -50,6 +52,8 @@ fill-paragraph string->recutils package->recutils + string->generations + string->duration args-fold* run-guix-command program-name @@ -404,6 +408,70 @@ WIDTH columns." (and=> (package-description p) description->recutils)) (newline port)) +(define (string->generations str) + "Return the list of generations matching a pattern in STR. This function +accepts the following patterns: \"1\", \"1,2,3\", \"1..9\", \"1..\", \"..9\"." + (define (maybe-integer) + (let ((x (string->number str))) + (and (integer? x) + x))) + + (define (maybe-comma-separated-integers) + (let ((lst (delete-duplicates + (map string->number + (string-split str #\,))))) + (and (every integer? lst) + lst))) + + (cond ((maybe-integer) + => + list) + ((maybe-comma-separated-integers) + => + identity) + ((string-match "^([0-9]+)\\.\\.([0-9]+)$" str) + => + (lambda (match) + (let ((s (string->number (match:substring match 1))) + (e (string->number (match:substring match 2)))) + (and (every integer? (list s e)) + (<= s e) + (iota (1+ (- e s)) s))))) + ((string-match "^([0-9]+)\\.\\.$" str) + => + (lambda (match) + (let ((s (string->number (match:substring match 1)))) + (and (integer? s) + `(>= ,s))))) + ((string-match "^\\.\\.([0-9]+)$" str) + => + (lambda (match) + (let ((e (string->number (match:substring match 1)))) + (and (integer? e) + `(<= ,e))))) + (else #f))) + +(define (string->duration str) + "Return the duration matching a pattern in STR. This function accepts the +following patterns: \"1d\", \"1w\", \"1m\"." + (define (hours->duration hours match) + (make-time time-duration 0 + (* 3600 hours (string->number (match:substring match 1))))) + + (cond ((string-match "^([0-9]+)d$" str) + => + (lambda (match) + (hours->duration 24 match))) + ((string-match "^([0-9]+)w$" str) + => + (lambda (match) + (hours->duration (* 24 7) match))) + ((string-match "^([0-9]+)m$" str) + => + (lambda (match) + (hours->duration (* 24 30) match))) + (else #f))) + (define (args-fold* options unrecognized-option-proc operand-proc . seeds) "A wrapper on top of `args-fold' that does proper user-facing error reporting." |