From: night0721 <night@night0721.xyz>
Date: Thu, 21 Nov 2024 12:04:40 +0000
Subject: [PATCH] Image preview support with libsixel

---
 Makefile |  4 +++-
 ccc.c    | 17 +++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 2d4cde2..b7d9f80 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,9 @@ PREFIX ?= /usr/local
 BINDIR = $(PREFIX)/bin
 MANDIR = $(PREFIX)/share/man/man1
 
-CFLAGS = -Os -march=native -mtune=native -pipe -s -flto -std=c99 -pedantic -Wall -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=600
+LDFLAGS != pkg-config --libs libsixel
+INCFLAGS != pkg-config --cflags libsixel
+CFLAGS = -Os -march=native -mtune=native -pipe -s -flto -std=c99 -pedantic -Wall -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=600 $(INCFLAGS)
 
 SRC = ccc.c util.c file.c icons.c
 
diff --git a/ccc.c b/ccc.c
index c3df5ff..2e3cc14 100644
--- a/ccc.c
+++ b/ccc.c
@@ -13,6 +13,8 @@
 #include <termios.h>
 #include <time.h>
 
+#include <sixel.h>
+
 #include "icons.h"
 #include "file.h"
 #include "util.h"
@@ -921,12 +923,14 @@ void show_file_content(void)
 
 	int c;
 	/* Check if its binary */
+	if (strstr(current_file.name, ".jpg") == NULL && strstr(current_file.name, ".png") == NULL) {
 	while ((c = fgetc(file)) != EOF) {
 		if (c == '\0') {
 			bprintf("binary");
 			return;
 		}
 	}
+	}
 	int pipe_fd[2];
 	if (pipe(pipe_fd) == -1) {
 		perror("pipe");
@@ -936,14 +940,26 @@ void show_file_content(void)
 	if (pid == 0) {
 		/* Child */
 		move_cursor(1, half_width);
+		if (strstr(current_file.name, ".jpg") || strstr(current_file.name, ".png")) {
+			sixel_encoder_t *encoder = NULL;
+			sixel_encoder_new(&encoder, NULL);
+			/* Should be enough for most terminal */
+			char width[5];
+			snprintf(width, 5, "%d", (cols - half_width) * 6);
+			sixel_encoder_setopt(encoder, 'w', width);
+			sixel_encoder_encode(encoder, current_file.name);
+			sixel_encoder_unref(encoder);
+		} else {
 		close(pipe_fd[0]);
 		dup2(pipe_fd[1], STDOUT_FILENO);
 		dup2(pipe_fd[1], STDERR_FILENO);
 		close(pipe_fd[1]);
 		execlp("vip", "vip", "-c", current_file.name, NULL);
+		}
 		_exit(1);
 	} else if (pid > 0) {
 		/* Parent */
+		if (!strstr(current_file.name, ".jpg") && !strstr(current_file.name, ".png")) {
 		close(pipe_fd[1]);
 		char buffer[4096];
 		int row = 1;
@@ -988,6 +1004,7 @@ void show_file_content(void)
 			}
 		}
 		fclose(stream);
+		}
 		waitpid(pid, NULL, 0);
 	} else {
 		wpprintw("fork failed: %s", strerror(errno));
--