From f334fbad6593a99a7b366b05abf6adf5edc484b5 Mon Sep 17 00:00:00 2001
From: Chris Antos <sparrowhawk996@gmail.com>
Date: Thu, 4 Jul 2024 11:44:51 -0700
Subject: [PATCH] Add completions for Cloud Foundry CLI.

---
 completions/cf.lua | 77 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 completions/cf.lua

diff --git a/completions/cf.lua b/completions/cf.lua
new file mode 100644
index 0000000..78b8663
--- /dev/null
+++ b/completions/cf.lua
@@ -0,0 +1,77 @@
+-- Clink script to generate completions for Cloud Foundry CLI.
+-- https://github.com/cloudfoundry/cli
+
+local fullname = ...
+
+local function get_completions(matchtype, word, word_index, line_state, match_builder, user_data)
+    -- Collect the command arguments.
+    local args = ""
+    for i = 1, line_state:getwordcount() do
+        local info = line_state:getwordinfo(i)
+        if info and not info.redir then
+            if args == "" then
+                -- Skip first non-redir word; it's the program name.
+                args = " "
+            else
+                local word = line_state:getword(i)
+                if word:sub(-1) == "\\" then
+                    -- Compensate for \" command line parsing.
+                    word = word.."\\"
+                end
+                args = args..' "'..word..'"'
+            end
+        end
+    end
+
+    -- Get completions.
+    local command = string.format('2>nul set GO_FLAGS_COMPLETION=verbose& 2>nul "%s" %s', fullname, args)
+    local f = io.popen(command)
+    if f then
+        -- Add completions to the match builder.
+        for line in f:lines() do
+            local match = line
+            local word, desc = line:match("^([^ ]+) +# (.*)$")
+            if word and desc then
+                -- Include the description when available.
+                match = { match=word, description=desc }
+            end
+            match_builder:addmatch(match, matchtype)
+        end
+        f:close()
+    end
+
+    return true
+end
+
+local function get_flag_completions(...)
+    return get_completions("flag", ...)
+end
+
+local function get_word_completions(...)
+    return get_completions("word", ...)
+end
+
+local name = path.getname(fullname):lower()
+if name == "cf.exe" or name == "cf8.exe" then
+    local f = io.popen(string.format('2>nul findstr /m /c:code.cloudfoundry.org "%s"', fullname))
+    if f then
+        local t = f:read("*a") or ""
+        if t:lower():find("cf.exe") then
+            -- It really is Cloud Foundry, so set up an argmatcher.
+            local ext = path.getextension(fullname)
+            local cf
+            if (clink.version_encoded or 0) >= 10060017 then
+                cf = clink.argmatcher(fullname, fullname:sub(1, #fullname - #ext))
+            else
+                -- Can't use exact lookup in Clink v1.6.16 and earlier because
+                -- typing "cf" looks for "cf.EXE" but internally argmatchers are
+                -- always registered as lower case names.
+                cf = clink.argmatcher("cf")
+            end
+            cf:setflagprefix("-")
+              :addflags(get_flag_completions)
+              :addarg(get_word_completions)
+              :loop()
+        end
+    end
+end