From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 8 Jul 2015 20:46:52 -0400
Subject: Initial commit

---
 pkg/system/references.cl | 50 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 pkg/system/references.cl

(limited to 'pkg/system/references.cl')

diff --git a/pkg/system/references.cl b/pkg/system/references.cl
new file mode 100644
index 00000000..ca93e6a6
--- /dev/null
+++ b/pkg/system/references.cl
@@ -0,0 +1,50 @@
+# REFERENCES -- Search the help database for help on a given subject.
+# By default a runtime search is performed of all the package menus in the
+# help database, but the user may prepare a "quick-reference" file to speed
+# further searches if desired.  This cannot easily be done automatically
+# since any set of packages may form the help database.
+#
+# NOTE -- Uses LISTS.
+
+procedure references (topic)
+
+string	topic			     { prompt = "topic to find help for" }
+file	quickref = "uparm$quick.ref" { prompt = "quick-reference file" }
+bool	updquick = no		     { prompt = "update quick-reference file" }
+bool	usequick = no		     { prompt = "use quick-reference file" }
+
+begin
+	string	pattern
+	file	fname
+
+	# Make a quick-search file if so requested.
+	if (updquick) {
+	    fname = quickref
+	    print ("generating new quick-reference file " // fname // "...")
+	    if (access (fname))
+		delete (fname, verify-)
+	    help ("[a-z]*.", option="ref", curpack="AsckCL", device="terminal",
+		helpdb="helpdb") |& match ("-", metacharacters=yes) |
+		sort(ignore+) | unique ( > fname)
+	    references.quickref = fname
+	    references.usequick = yes
+
+	} else {
+	    # Ignore case.
+	    pattern = ("{" // topic // "}")
+
+	    # If the user has prepared a quick-search file (e.g., by running
+	    # this task with topic=* and saving the output to make the quick
+	    # file), search that if it exists, otherwise perform a runtime
+	    # search of the package menu files for the entire help database.
+
+	    if (usequick && access (quickref))
+		match (pattern, quickref, metacharacters=yes)
+	    else {
+		print ("searching the help database...")
+		help ("[a-z]*.", section="all", option="ref", curpack="AsckCL",
+		    device="terminal", helpdb="helpdb") |& sort(ignore+) | 
+		    unique | match (pattern, metacharacters=yes)
+	    }
+	}
+end
-- 
cgit