db_games_find(): New function

5 files changed, 96 insertions, 2 deletions

diff --git a/configure.ac b/configure.ac
index 5143bf7..eaf4387 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,7 +36,8 @@ test -d "${srcdir}/.git" || CFLAGS="${save_CFLAGS}"
 funcs_missing=false
 AC_CHECK_FUNCS(
 	[\
-		free malloc printf putchar sscanf strcmp strdup vprintf
+		alphasort calloc free malloc printf putchar scandir sscanf \
+		strcmp strdup vprintf
 	],
 	[],
 	[funcs_missing=true])
diff --git a/src/game.c b/src/game.c
new file mode 100644
index 0000000..001fcca
--- /dev/null
+++ b/src/game.c
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2021  P. J. McDermott
+ *
+ * This file is part of Dodge Balls
+ *
+ * Dodge Balls is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Dodge Balls is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Dodge Balls.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <dirent.h>
+#include <stdlib.h>
+#include <string.h>
+#include "game.h"
+#include "output.h"
+
+static int
+_db_game_is_dir(const struct dirent *entry)
+{
+	return (entry->d_type == DT_DIR && entry->d_name[0] != '.');
+}
+
+int
+db_games_find(char ***games)
+{
+	struct dirent **entries;
+	int             n;
+	int             i;
+
+	n = scandir("games", &entries, &_db_game_is_dir, alphasort);
+
+	*games = calloc(n, sizeof(**games));
+	if (*games == NULL) {
+		db_err("Failed to allocate memory");
+		return -1;
+	}
+
+	for (i = 0; i < n; ++i) {
+		(*games)[i] = strdup(entries[i]->d_name);
+		free(entries[i]);
+	}
+
+	free(entries);
+
+	return n;
+}
diff --git a/src/game.h b/src/game.h
new file mode 100644
index 0000000..447d56b
--- /dev/null
+++ b/src/game.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2021  P. J. McDermott
+ *
+ * This file is part of Dodge Balls
+ *
+ * Dodge Balls is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Dodge Balls is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Dodge Balls.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef DB_GAME_H_
+#define DB_GAME_H_
+
+int db_games_find(char ***games);
+
+#endif  /* DB_GAME_H_ */
diff --git a/src/local.mk b/src/local.mk
index 9e51a3d..196ae0c 100644
--- a/src/local.mk
+++ b/src/local.mk
@@ -1,4 +1,6 @@
 dodge_balls_SOURCES += \
+	%reldir%/game.c \
+	%reldir%/game.h \
 	%reldir%/main.c \
 	%reldir%/output.c \
 	%reldir%/output.h \
diff --git a/src/main.c b/src/main.c
index 380a615..64d8e3d 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,9 +1,20 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include "game.h"
 
 int
 main(int argc, char *argv[])
 {
-	puts("Hello, world!");
+	char **games;
+	int    n;
+	int    i;
+
+	n = db_games_find(&games);
+	printf("%d games:\n", n);
+	for (i = 0; i < n; ++i) {
+		printf("\t%s\n", games[i]);
+		free(games[i]);
+	}
+	free(games);
 	return EXIT_SUCCESS;
 }