diff options
Diffstat (limited to 'guix/build/utils.scm')
| -rw-r--r-- | guix/build/utils.scm | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/guix/build/utils.scm b/guix/build/utils.scm index f22b2c3cb7..47bcb3e8a1 100644 --- a/guix/build/utils.scm +++ b/guix/build/utils.scm @@ -291,7 +291,7 @@ matches REGEXP." ;;; (define* (search-path-as-list files input-dirs - #:key (type 'directory)) + #:key (type 'directory) pattern) "Return the list of directories among FILES of the given TYPE (a symbol as returned by 'stat:type') that exist in INPUT-DIRS. Example: @@ -300,13 +300,26 @@ returned by 'stat:type') that exist in INPUT-DIRS. Example: => (\"/package1/share/emacs/site-lisp\" \"/package3/share/emacs/site-lisp\") +When PATTERN is true, it is a regular expression denoting file names to look +for under the directories designated by FILES. For example: + + (search-path-as-list '(\"xml\") (list docbook-xml docbook-xsl) + #:type 'regular + #:pattern \"^catalog\\\\.xml$\") + => (\"/…/xml/dtd/docbook/catalog.xml\" + \"/…/xml/xsl/docbook-xsl-1.78.1/catalog.xml\") " (append-map (lambda (input) - (filter-map (lambda (file) - (let* ((file (string-append input "/" file)) - (stat (stat file #f))) - (and stat (eq? type (stat:type stat)) - file))) + (append-map (lambda (file) + (let ((file (string-append input "/" file))) + ;; XXX: By using 'find-files', we implicitly + ;; assume #:type 'regular. + (if pattern + (find-files file pattern) + (let ((stat (stat file #f))) + (if (and stat (eq? type (stat:type stat))) + (list file) + '()))))) files)) input-dirs)) @@ -319,7 +332,8 @@ returned by 'stat:type') that exist in INPUT-DIRS. Example: (define* (set-path-environment-variable env-var files input-dirs #:key (separator ":") - (type 'directory)) + (type 'directory) + pattern) "Look for each of FILES of the given TYPE (a symbol as returned by 'stat:type') in INPUT-DIRS. Set ENV-VAR to a SEPARATOR-separated path accordingly. Example: @@ -327,9 +341,19 @@ accordingly. Example: (set-path-environment-variable \"PKG_CONFIG\" '(\"lib/pkgconfig\") (list package1 package2)) + +When PATTERN is not #f, it must be a regular expression (really a string) +denoting file names to look for under the directories designated by FILES: + + (set-path-environment-variable \"XML_CATALOG_FILES\" + '(\"xml\") + (list docbook-xml docbook-xsl) + #:type 'regular + #:pattern \"^catalog\\\\.xml$\") " (let* ((path (search-path-as-list files input-dirs - #:type type)) + #:type type + #:pattern pattern)) (value (list->search-path-as-string path separator))) (if (string-null? value) (begin |