From 2cedde340070301b29e934b42f06c41a74b12409 Mon Sep 17 00:00:00 2001
From: Kien N <contact@ndkien.com>
Date: Fri, 6 Apr 2012 07:52:57 +0700
Subject: [PATCH] Only read from cache when necessary

---
 autoload/ctrlp.vim       | 26 ++++++++++++++------------
 autoload/ctrlp/dir.vim   | 13 ++++++-------
 autoload/ctrlp/mixed.vim |  2 +-
 autoload/ctrlp/utils.vim |  9 +++------
 4 files changed, 24 insertions(+), 26 deletions(-)

diff --git a/autoload/ctrlp.vim b/autoload/ctrlp.vim
index d2cd441..9371a0a 100644
--- a/autoload/ctrlp.vim
+++ b/autoload/ctrlp.vim
@@ -198,7 +198,7 @@ fu! s:Close()
 		sil! exe 'let &'.key.' = s:glb_'.key
 	en | endfo
 	if exists('s:glb_acd') | let &acd = s:glb_acd | en
-	let [g:ctrlp_lines, g:ctrlp_allfiles] = [[], []]
+	let g:ctrlp_lines = []
 	if s:winres[1] >= &lines && s:winres[2] == winnr('$')
 		exe s:winres[0]
 	en
@@ -233,9 +233,9 @@ fu! ctrlp#reset()
 endf
 " * Files {{{1
 fu! ctrlp#files()
-	let [cafile, g:ctrlp_allfiles] = [ctrlp#utils#cachefile(), []]
+	let cafile = ctrlp#utils#cachefile()
 	if g:ctrlp_newcache || !filereadable(cafile) || !s:caching
-		let lscmd = s:lsCmd()
+		let [lscmd, s:initcwd, g:ctrlp_allfiles] = [s:lsCmd(), s:dyncwd, []]
 		" Get the list of files
 		if empty(lscmd)
 			cal s:GlobPath(s:dyncwd, 0)
@@ -246,15 +246,16 @@ fu! ctrlp#files()
 		en
 		" Remove base directory
 		cal ctrlp#rmbasedir(g:ctrlp_allfiles)
-		let read_cache = 0
 		if len(g:ctrlp_allfiles) <= s:compare_lim
 			cal sort(g:ctrlp_allfiles, 'ctrlp#complen')
 		en
+		cal s:writecache(cafile)
 	el
-		let g:ctrlp_allfiles = ctrlp#utils#readfile(cafile)
-		let read_cache = 1
+		if !( exists('s:initcwd') && s:initcwd == s:dyncwd )
+			let s:initcwd = s:dyncwd
+			let g:ctrlp_allfiles = ctrlp#utils#readfile(cafile)
+		en
 	en
-	cal s:writecache(read_cache, cafile)
 	retu g:ctrlp_allfiles
 endf
 
@@ -1010,7 +1011,7 @@ fu! s:mixedsort(s1, s2)
 			unl! s:mrbs
 			retu cln + ctm * mp_1 + cfn * mp_2 + par * mp_3 + cml * mp_4
 		en
-		let [mp_1, mp_2, mp_3, mp_4] = s:multiplier(cfn, par, cml, 0)
+		let [mp_1, mp_2, mp_3, mp_4] = s:multipliers(cfn, par, cml, 0)
 		retu cln + cfn * mp_1 + par * mp_2 + cml * mp_3
 	en
 	retu cln + cml * 2
@@ -1545,11 +1546,12 @@ fu! s:mmode()
 	retu matchmodes[s:mfunc]
 endf
 " Cache {{{2
-fu! s:writecache(read_cache, cache_file)
-	if !a:read_cache && ( ( g:ctrlp_newcache || !filereadable(a:cache_file) )
-		\ && s:caching || len(g:ctrlp_allfiles) > s:nocache_lim )
+fu! s:writecache(cache_file)
+	if ( g:ctrlp_newcache || !filereadable(a:cache_file) ) && s:caching
+		\ || len(g:ctrlp_allfiles) > s:nocache_lim
 		if len(g:ctrlp_allfiles) > s:nocache_lim | let s:caching = 1 | en
 		cal ctrlp#utils#writecache(g:ctrlp_allfiles)
+		let g:ctrlp_newcache = 0
 	en
 endf
 
@@ -1567,7 +1569,7 @@ fu! s:insertcache(str)
 		endfo
 	en
 	cal insert(data, str, pos)
-	cal s:writecache(0, ctrlp#utils#cachefile())
+	cal s:writecache(ctrlp#utils#cachefile())
 endf
 " Extensions {{{2
 fu! s:mtype()
diff --git a/autoload/ctrlp/dir.vim b/autoload/ctrlp/dir.vim
index b849ac2..7b0e17d 100644
--- a/autoload/ctrlp/dir.vim
+++ b/autoload/ctrlp/dir.vim
@@ -54,20 +54,19 @@ fu! ctrlp#dir#init(...)
 	let cadir = ctrlp#utils#cachedir().ctrlp#utils#lash().s:dir_var['sname']
 	let cafile = cadir.ctrlp#utils#lash().ctrlp#utils#cachefile(s:dir_var['sname'])
 	if g:ctrlp_newdir || !filereadable(cafile)
-		let g:ctrlp_alldirs = []
+		let [s:initcwd, g:ctrlp_alldirs] = [s:cwd, []]
 		cal s:globdirs(s:cwd, 0)
 		cal ctrlp#rmbasedir(g:ctrlp_alldirs)
-		let read_cache = 0
 		if len(g:ctrlp_alldirs) <= s:compare_lim
 			cal sort(g:ctrlp_alldirs, 'ctrlp#complen')
 		en
-	el
-		let g:ctrlp_alldirs = ctrlp#utils#readfile(cafile)
-		let read_cache = 1
-	en
-	if !read_cache
 		cal ctrlp#utils#writecache(g:ctrlp_alldirs, cadir, cafile)
 		let g:ctrlp_newdir = 0
+	el
+		if !( exists('s:initcwd') && s:initcwd == s:cwd )
+			let s:initcwd = s:cwd
+			let g:ctrlp_alldirs = ctrlp#utils#readfile(cafile)
+		en
 	en
 	retu g:ctrlp_alldirs
 endf
diff --git a/autoload/ctrlp/mixed.vim b/autoload/ctrlp/mixed.vim
index ab9be2e..0314498 100644
--- a/autoload/ctrlp/mixed.vim
+++ b/autoload/ctrlp/mixed.vim
@@ -38,7 +38,7 @@ fu! s:getnewmix(cwd, clim)
 		cal ctrlp#mrufiles#refresh('raw')
 		let g:ctrlp_newcache = 1
 	en
-	let g:ctrlp_lines = ctrlp#files()
+	let g:ctrlp_lines = copy(ctrlp#files())
 	cal ctrlp#progress('Mixing...')
 	let mrufs = ctrlp#mrufiles#list('raw')
 	if exists('+ssl') && &ssl
diff --git a/autoload/ctrlp/utils.vim b/autoload/ctrlp/utils.vim
index b4af577..3bb3d9c 100644
--- a/autoload/ctrlp/utils.vim
+++ b/autoload/ctrlp/utils.vim
@@ -33,9 +33,9 @@ fu! ctrlp#utils#cachedir()
 endf
 
 fu! ctrlp#utils#cachefile(...)
-	let tail = a:0 ? '.'.a:1 : ''
-	let cache_file = substitute(getcwd(), '\([\/]\|^\a\zs:\)', '%', 'g').tail.'.txt'
-	retu a:0 ? cache_file : s:cache_dir.s:lash(s:cache_dir).cache_file
+	let [tail, dir] = [a:0 == 1 ? '.'.a:1 : '', a:0 == 2 ? a:1 : getcwd()]
+	let cache_file = substitute(dir, '\([\/]\|^\a\zs:\)', '%', 'g').tail.'.txt'
+	retu a:0 == 1 ? cache_file : s:cache_dir.s:lash(s:cache_dir).cache_file
 endf
 
 fu! ctrlp#utils#readfile(file)
@@ -60,9 +60,6 @@ endf
 fu! ctrlp#utils#writecache(lines, ...)
 	if isdirectory(ctrlp#utils#mkdir(a:0 ? a:1 : s:cache_dir))
 		sil! cal writefile(a:lines, a:0 >= 2 ? a:2 : ctrlp#utils#cachefile())
-		if !a:0
-			let g:ctrlp_newcache = 0
-		en
 	en
 endf