Add noimages option

doc/ctpv.1

@@ -268,6 +268,10 @@ Always use
 .I Kitty
 terminal's built-in method of previewing images.
 .
+.TP
+.B noimages
+Print only text and do not use any image previewing method.
+.
 .SS Defining custom previews
 .
 A snippet below defines a new preview with name

sh/helpers.sh

@@ -15,6 +15,10 @@ use_kitty() {
 	is_kitty
 }
 
+noimages() {
+	[ -n "$noimages" ]
+}
+
 fifo_open() {
 	# https://unix.stackexchange.com/a/522940/183147
 	dd oflag=nonblock conv=notrunc,nocreat count=0 of="$1" \
@@ -39,6 +43,8 @@ check_exists() {
 }
 
 send_image() {
+	noimages && return 127
+
 	if use_kitty; then
 		kitty +kitten icat --transfer-mode file --align left \
 			--place "${w}x${h}@${x}x${y}" "$1"
@@ -53,6 +59,7 @@ send_image() {
 }
 
 convert_and_show_image() {
+	noimages && exit 127
 	setup_fifo
 	[ -n "$cache_valid" ] || "$@" || exit "$?"
 	send_image "$cache_f"

src/config.c

@@ -42,6 +42,7 @@ static VectorPreview *previews;
 
 static struct Option options[] = {
     { "forcekitty", OPTION_BOOL, { .i = &ctpv.opts.forcekitty } },
+    { "noimages", OPTION_BOOL, { .i = &ctpv.opts.noimages } },
 };
 
 static void any_type_null(char **s)

src/ctpv.h

@@ -14,7 +14,7 @@ struct CTPV {
     } mode;
     char *server_id_s;
     struct {
-        int forcekitty;
+        int forcekitty, noimages;
     } opts;
 };
 

src/shell.c

@@ -35,6 +35,7 @@ int run_script(char *script, size_t script_len, int *exitcode, int *signal,
                SpawnProg sp, void *sp_arg)
 {
     ERRCHK_RET_ERN(setenv("forcekitty", ctpv.opts.forcekitty ? "1" : "", 1) == -1);
+    ERRCHK_RET_ERN(setenv("noimages", ctpv.opts.noimages ? "1" : "", 1) == -1);
 
     char *scr = prepend_helpers(script, script_len);
     char *args[] = SHELL_ARGS(scr);