From d2311c2332722ac0401e3441d9834c8b02491a82 Mon Sep 17 00:00:00 2001
From: Awal Garg <awalgarg@gmail.com>
Date: Mon, 30 Mar 2020 13:14:18 +0530
Subject: Enable re-using downloaded http cache

---
 src/imlib.c   | 18 ++++++++++++++++--
 src/options.c |  4 ++++
 src/options.h |  1 +
 3 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/imlib.c b/src/imlib.c
index b9f071a..1786876 100644
--- a/src/imlib.c
+++ b/src/imlib.c
@@ -258,10 +258,13 @@ int feh_load_image(Imlib_Image * im, feh_file * file)
 			file->ed = exif_get_data(tmpname);
 #endif
 		}
-		if ((image_source != SRC_HTTP) || !opt.keep_http)
+		if ((image_source != SRC_HTTP) || (!opt.keep_http && !opt.use_http_cache))
 			unlink(tmpname);
+		else if (opt.use_http_cache && !opt.keep_http)
+			add_file_to_rm_filelist(tmpname);
 
-		free(tmpname);
+		if (image_source != SRC_HTTP && !opt.use_http_cache)
+			free(tmpname);
 	}
 
 	if ((err) || (!im)) {
@@ -542,6 +545,8 @@ static char *feh_magick_load_image(char *filename)
 
 #ifdef HAVE_LIBCURL
 
+gib_hash* http_cache = NULL;
+
 #if LIBCURL_VERSION_NUM >= 0x072000 /* 07.32.0 */
 static int curl_quit_function(void *clientp,  curl_off_t dltotal,  curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow)
 #else
@@ -576,6 +581,13 @@ static char *feh_http_load_image(char *url)
 	char *basename;
 	char *path = NULL;
 
+	if (opt.use_http_cache) {
+		if (!http_cache)
+			http_cache = gib_hash_new();
+		if ((sfn = gib_hash_get(http_cache, url)) != NULL)
+			return sfn;
+	}
+
 	if (opt.keep_http) {
 		if (opt.output_dir)
 			path = opt.output_dir;
@@ -648,6 +660,8 @@ static char *feh_http_load_image(char *url)
 
 			free(ebuff);
 			fclose(sfp);
+			if (opt.use_http_cache)
+				gib_hash_set(http_cache, url, sfn);
 			return sfn;
 		} else {
 			weprintf("open url: fdopen failed:");
diff --git a/src/options.c b/src/options.c
index aae10c2..98b3eed 100644
--- a/src/options.c
+++ b/src/options.c
@@ -431,6 +431,7 @@ static void feh_parse_option_array(int argc, char **argv, int finalrun)
 		{"auto-reload"   , 0, 0, 248},
 #endif
 		{"class"         , 1, 0, 249},
+		{"use-http-cache", 0, 0, 250},
 		{0, 0, 0, 0}
 	};
 	int optch = 0, cmdx = 0;
@@ -827,6 +828,9 @@ static void feh_parse_option_array(int argc, char **argv, int finalrun)
 		case 249:
 			opt.x11_class = estrdup(optarg);
 			break;
+		case 250:
+			opt.use_http_cache = 1;
+			break;
 		default:
 			break;
 		}
diff --git a/src/options.h b/src/options.h
index 93474a9..74ef33f 100644
--- a/src/options.h
+++ b/src/options.h
@@ -49,6 +49,7 @@ struct __fehoptions {
 	unsigned char aspect;
 	unsigned char stretch;
 	unsigned char keep_http;
+	unsigned char use_http_cache;
 	unsigned char borderless;
 	unsigned char randomize;
 	unsigned char jump_on_resort;
-- 
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