1 files changed, 144 insertions, 0 deletions
diff --git a/src/about/about.c b/src/about/about.c
new file mode 100644
index 0000000..60f5104
--- /dev/null
+++ b/src/about/about.c
@@ -0,0 +1,144 @@
+/******************************************************************************
+ *	Copyright (C) 2018	Alejandro Colomar Andrés		      *
+ *	SPDX-License-Identifier:	GPL-2.0-only			      *
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* headers **************************************************************
+ ******************************************************************************/
+#include "vision-artificial/about/about.h"
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "libalx/base/errno/errno_str.h"
+#include "libalx/base/stdio/sprint_file.h"
+
+
+/******************************************************************************
+ ******* macros ***************************************************************
+ ******************************************************************************/
+#define BUFF_SIZE_TEXT	(0xFFFF)	/* 64 KiB */
+#define BEGINNING	"\n┌──────────────────────────────────────────────────────────────────────────────┐\n"
+#define ENDING		"└──────────────────────────────────────────────────────────────────────────────┘\n\n"
+
+
+/******************************************************************************
+ ******* enums ****************************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* structs / unions *****************************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* variables ************************************************************
+ ******************************************************************************/
+char	share_path [FILENAME_MAX];
+
+
+/******************************************************************************
+ ******* static functions (prototypes) ****************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* global functions *****************************************************
+ ******************************************************************************/
+void	about_init		(void)
+{
+
+	if (snprintf(share_path, FILENAME_MAX, "%s/estadistica/",
+					INSTALL_SHARE_DIR)  >=  FILENAME_MAX) {
+		goto err;
+	}
+	return;
+err:
+	printf("Path is too large and has been truncated\n");
+	exit(EXIT_FAILURE);
+}
+
+void	snprint_share_file	(ptrdiff_t size, char buff[restrict size],
+				int file)
+{
+	char	fname [FILENAME_MAX];
+
+	switch (file) {
+	case SHARE_COPYRIGHT:
+		if (snprintf(fname, FILENAME_MAX, "%s/%s",
+					share_path,
+					"COPYRIGHT.txt")  >=  FILENAME_MAX) {
+			goto err;
+		}
+		break;
+	case SHARE_DISCLAIMER:
+		if (snprintf(fname, FILENAME_MAX, "%s/%s",
+					share_path,
+					"DISCLAIMER.txt")  >=  FILENAME_MAX) {
+			goto err;
+		}
+		break;
+	case SHARE_HELP:
+		if (snprintf(fname, FILENAME_MAX, "%s/%s",
+					share_path,
+					"HELP.txt")  >=  FILENAME_MAX) {
+			goto err;
+		}
+		break;
+	case SHARE_LICENSE:
+		if (snprintf(fname, FILENAME_MAX, "%s/%s",
+					share_path,
+					"LICENSE.txt")  >=  FILENAME_MAX) {
+			goto err;
+		}
+		break;
+	case SHARE_USAGE:
+		if (snprintf(fname, FILENAME_MAX, "%s/%s",
+					share_path,
+					"USAGE.txt")  >=  FILENAME_MAX) {
+			goto err;
+		}
+		break;
+	}
+
+	if (alx_snprint_file(size, buff, fname) < 0)
+		printf("%s: %s\n", errno_str[errno][0], errno_str[errno][1]);
+
+	return;
+
+err:
+	printf("Path is too large and has been truncated\n");
+	printf("File could not be shown!\n");
+}
+
+void	print_share_file	(int file)
+{
+	char	str [BUFF_SIZE_TEXT];
+
+	snprint_share_file(BUFF_SIZE_TEXT, str, file);
+
+	printf(BEGINNING);
+	printf("%s", str);
+	printf(ENDING);
+}
+
+void	print_version		(void)
+{
+
+	printf(""PROG_NAME" "PROG_VERSION"\n\n");
+}
+
+
+/******************************************************************************
+ ******* static functions (definitions) ***************************************
+ ******************************************************************************/
+
+
+/******************************************************************************
+ ******* end of file **********************************************************
+ ******************************************************************************/