libansilove

commit b676ec5cdb3680c322012b8f7acd3e37a29b8112
parent 389a8405b6be7e93ed789b9e6d05fb11cd75b378
Author: Frederic Cambus <fred@statdns.com>
Date:   Mon, 16 Jul 2018 20:07:31 +0200

Add an ansilove_loadfile() function to load a file from disk

Diffstat:
M
include/ansilove.h
 | 
2
++
A
src/loadfile.c
 | 
48
++++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 50 insertions(+), 0 deletions(-)
diff --git a/include/ansilove.h b/include/ansilove.h
@@ -40,6 +40,8 @@ struct ansilove_options {
 };
 
 void ansilove_init(struct ansilove_ctx *, struct ansilove_options *);
+int ansilove_loadfile(struct ansilove_ctx *, char *);
+
 int ansilove_ansi(struct ansilove_ctx *, struct ansilove_options *);
 int ansilove_artworx(struct ansilove_ctx *, struct ansilove_options *);
 int ansilove_binary(struct ansilove_ctx *, struct ansilove_options *);
diff --git a/src/loadfile.c b/src/loadfile.c
@@ -0,0 +1,48 @@
+//
+//  loadfile.c
+//  AnsiLove/C
+//
+//  Copyright (c) 2011-2018 Stefan Vogt, Brian Cassidy, and Frederic Cambus.
+//  All rights reserved.
+//
+//  This source code is licensed under the BSD 2-Clause License.
+//  See the LICENSE file for details.
+//
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include "ansilove.h"
+
+int
+ansilove_loadfile(struct ansilove_ctx *ctx, char *input) {
+	int fd;
+	struct stat st;
+
+		// load input file
+		if ((fd = open(input, O_RDONLY)) == -1) {
+			// perror("File error");
+			return -1;
+		}
+
+		// get the file size (bytes)
+		if (fstat(fd, &st) == -1) {
+			// perror("Can't stat file");
+			return -1;
+		}
+
+		ctx->length = st.st_size;
+
+		// mmap input file into memory
+		ctx->buffer = mmap(NULL, ctx->length, PROT_READ, MAP_PRIVATE, fd, 0);
+		if (ctx->buffer == MAP_FAILED) {
+			// perror("Memory error");
+			return -1;
+		}
+
+		// close input file, we don't need it anymore
+		close(fd);
+
+		return 0;
+}