diff options
| -rw-r--r-- | ccwl/graphviz.scm | 9 | ||||
| -rw-r--r-- | tests/graphviz.scm | 13 |
2 files changed, 18 insertions, 4 deletions
diff --git a/ccwl/graphviz.scm b/ccwl/graphviz.scm index fbef971..a3f4036 100644 --- a/ccwl/graphviz.scm +++ b/ccwl/graphviz.scm @@ -29,6 +29,7 @@ #:use-module (srfi srfi-26) #:use-module (srfi srfi-28) #:use-module (ice-9 match) + #:use-module (ice-9 string-fun) #:use-module (ccwl ccwl) #:use-module (ccwl utils) #:export (workflow->dot)) @@ -129,15 +130,15 @@ symbol, a string, or a <html-string> object." ;; Surround HTML strings in <>, and don't escape. ((html-string? object) (format "<~a>" str)) - ;; Don't escape safe strings. + ;; Don't quote safe strings. ((string-every (char-set-union (char-set-intersection char-set:letter+digit char-set:ascii) (char-set #\_)) str) str) - ;; Escape strings with unsafe characters. - (else (call-with-output-string - (cut write str <>)))))) + ;; Quote strings with unsafe characters. + (else + (format "\"~a\"" (string-replace-substring str "\"" "\\\"")))))) (define* (graph->dot graph #:optional (port (current-output-port)) (level 0)) "Render GRAPH, a <graph> object, in the graphviz dot syntax to diff --git a/tests/graphviz.scm b/tests/graphviz.scm index 5853616..bb99edc 100644 --- a/tests/graphviz.scm +++ b/tests/graphviz.scm @@ -45,4 +45,17 @@ `((label . ,(html-string "<table><tr><td>bar</td></tr></table>")))))) port)))) +(test-equal "do not escape backslashes" + "digraph foo { + bar [label=\"foo\\lbar\"]; +} +" + (call-with-output-string + (lambda (port) + (graph->dot + (graph 'foo + #:nodes (list (graph-node 'bar + `((label . "foo\\lbar"))))) + port)))) + (test-end "graphviz") |