1 files changed, 37 insertions, 0 deletions
diff --git a/library/writefile.tcl b/library/writefile.tcl
new file mode 100644
index 0000000..fbd9138
--- /dev/null
+++ b/library/writefile.tcl
@@ -0,0 +1,37 @@
+# writeFile:
+# Write the contents of a file.
+#
+# Copyright © 2023 Donal K Fellows.
+#
+# See the file "license.terms" for information on usage and redistribution
+# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+#
+
+proc writeFile {args} {
+    # Parse the arguments
+    switch [llength $args] {
+	2 {
+	    lassign $args filename data
+	    set mode text
+	}
+	3 {
+	    lassign $args filename mode data
+	    set MODES {binary text}
+	    set ERR [list -level 1 -errorcode [list TCL LOOKUP MODE $mode]]
+	    set mode [tcl::prefix match -message "mode" -error $ERR $MODES $mode]
+	}
+	default {
+	    set COMMAND [lindex [info level 0] 0]
+	    return -code error -errorcode {TCL WRONGARGS} \
+		"wrong # args: should be \"$COMMAND filename ?mode? data\""
+	}
+    }
+
+    # Write the file
+    set f [open $filename [dict get {text w binary wb} $mode]]
+    try {
+	puts -nonewline $f $data
+    } finally {
+	close $f
+    }
+}