From 4274d7daaea5bc33e171220337848ae9eddbb4f1 Mon Sep 17 00:00:00 2001
From: Sean Hinchee <henesy@users.noreply.github.com>
Date: Tue, 15 Jan 2019 01:03:14 +0000
Subject: [PATCH] add g!sig command

---
 mux.go        |  4 +++-
 x/mux/man.go  | 29 ++++++++++++++++++++++++++++-
 x/mux/man/sig | 30 ++++++++++++++++++++++++++++++
 3 files changed, 61 insertions(+), 2 deletions(-)
 create mode 100755 x/mux/man/sig

diff --git a/mux.go b/mux.go
index 933f1da2ba37bdc86c9baabd465bce9676733c53..f22afdc654d313fa4761804d4b4a627bafa3fc0d 100644
--- a/mux.go
+++ b/mux.go
@@ -28,7 +28,9 @@ func init() {
 
 	Router.Route("lookman", "Search for a string in the Plan 9 manual pages (From 9front for now).", Router.Lookman)
 
-	Router.Route("fortune", "Display fortunes. Bonus files are (theo troll rsc terry rob ken).", Router.Fortunes)
+	Router.Route("sig", "Search for function definitions in the Plan 9 manual pages (From 9front for now).", Router.Sig)
+
+	Router.Route("fortune", "Display fortunes. Bonus files are (theo troll rsc terry rob ken henesy).", Router.Fortunes)
 	
 	Router.Route("bullshit", "Print logical statements with sound grounding.", Router.Bullshit)
 	
diff --git a/x/mux/man.go b/x/mux/man.go
index 43b83350a68644f535e664a00b1864274ba72cdf..fe35f2fa8311c1e72551396de9fe6fd3680792ac 100644
--- a/x/mux/man.go
+++ b/x/mux/man.go
@@ -111,8 +111,35 @@ func (m *Mux) Man(ds *discordgo.Session, dm *discordgo.Message, ctx *Context) {
 }
 
 // Fetch a summary of a man page
-func (m *Mux) Summary(ds *discordgo.Session, dm *discordgo.Message, ctx *Context) {
+func (m *Mux) Sig(ds *discordgo.Session, dm *discordgo.Message, ctx *Context) {
+	resp := "\n```"
 
+	if !(len(ctx.Fields) >= 2) {
+		resp += "Usage: lookman key ...\n"
+	} else {
+		// g!sig vmx
+		args := ctx.Fields[1:]
+	
+		// rc or get out
+		out, err := exec.Command("./x/mux/man/sig", args...).Output()
+		if err != nil {
+			resp += "No sig script found."
+			goto END
+		} else {
+			if len(out) < 2 {
+				resp += "No matching definitions found."
+				goto END
+			}
+			
+			str := string(out)
+			// lines := strings.Split(str, "\n")
+			resp += str
+		}
+	} 
+
+	END:
+	resp += "```\n"
+	ds.ChannelMessageSend(dm.ChannelID, resp)
 }
 
 // Call lookman on a given query
diff --git a/x/mux/man/sig b/x/mux/man/sig
new file mode 100755
index 0000000000000000000000000000000000000000..68a8b1b531f9a4a0a532abf86f17e7f9568fec0f
--- /dev/null
+++ b/x/mux/man/sig
@@ -0,0 +1,30 @@
+#!/usr/bin/env rc
+# Usage: sig key ...
+#	prints out function signatures by grepping the manual
+
+MIRROR = /usr/share/mirror/plan9front
+*=`{echo $*|tr A-Z a-z|tr -dc 'a-z0-9_ \012'}	# fold case, delete funny chars
+if(~ $#* 0){
+	echo Usage: sig function ...
+	exit 1
+}
+
+for (i) {
+	files=`{9 grep -il '[ 	]\*?'$i'\(' $MIRROR/sys/man/2/*}
+	for(j in $files) {
+		{echo .nr LL 20i; 9 sed -n '/^.SH SYNOPSIS/,/^.SH.*DESCR/p'  $j } |
+			9 nroff -man |
+			sed '
+				:a
+				/,$/ {
+					N
+					s/\n//
+				}
+				ta
+				s/[ 	]+/ /g' |
+			9 grep -i -e '[ 	*]'$i'\(' | sed 's/^[ +]/	/' | sed 's/	    //g'
+	}
+}
+
+exit 0
+