add a file demo

demos/CMakeLists.txt

@@ -13,6 +13,9 @@ target_link_libraries(draw gral)
 add_executable(events events.c)
 target_link_libraries(events gral)
 
+add_executable(file file.c)
+target_link_libraries(file gral)
+
 add_executable(file_dialogs file_dialogs.c)
 target_link_libraries(file_dialogs gral)
 

demos/file.c

@@ -0,0 +1,102 @@
+#include <gral.h>
+#include <stdio.h>
+#include <string.h>
+
+static void command_cat(int argc, char **argv) {
+	if (argc < 3) {
+		printf("missing argument\n");
+		return;
+	}
+	struct gral_file *file = gral_file_open_read(argv[2]);
+	if (!file) {
+		printf("invalid file\n");
+		return;
+	}
+	size_t size = gral_file_get_size(file);
+	void *data = gral_file_map(file, size);
+	gral_file_close(file);
+	gral_file_write(gral_file_get_standard_output(), data, size);
+	gral_file_unmap(data, size);
+}
+
+static void ls_callback(char const *name, void *user_data) {
+	printf("%s\n", name);
+}
+
+static void command_ls(int argc, char **argv) {
+	if (argc < 3) {
+		printf("missing argument\n");
+		return;
+	}
+	gral_directory_iterate(argv[2], &ls_callback, 0);
+}
+
+static void command_mkdir(int argc, char **argv) {
+	if (argc < 3) {
+		printf("missing argument\n");
+		return;
+	}
+	gral_directory_create(argv[2]);
+}
+
+static void command_rm(int argc, char **argv) {
+	if (argc < 3) {
+		printf("missing argument\n");
+		return;
+	}
+	gral_file_remove(argv[2]);
+}
+
+static void command_rmdir(int argc, char **argv) {
+	if (argc < 3) {
+		printf("missing argument\n");
+		return;
+	}
+	gral_directory_remove(argv[2]);
+}
+
+static void command_stat(int argc, char **argv) {
+	if (argc < 3) {
+		printf("missing argument\n");
+		return;
+	}
+	int file_type = gral_file_get_type(argv[2]);
+	if (file_type == GRAL_FILE_TYPE_REGULAR) {
+		printf("regular\n");
+	}
+	else if (file_type == GRAL_FILE_TYPE_DIRECTORY) {
+		printf("directory\n");
+	}
+	else if (file_type == GRAL_FILE_TYPE_INVALID) {
+		printf("invalid\n");
+	}
+}
+
+int main(int argc, char **argv) {
+	if (argc < 2) {
+		printf("missing command\n");
+		return 0;
+	}
+	if (strcmp(argv[1], "cat") == 0) {
+		command_cat(argc, argv);
+	}
+	else if (strcmp(argv[1], "ls") == 0) {
+		command_ls(argc, argv);
+	}
+	else if (strcmp(argv[1], "mkdir") == 0) {
+		command_mkdir(argc, argv);
+	}
+	else if (strcmp(argv[1], "rm") == 0) {
+		command_rm(argc, argv);
+	}
+	else if (strcmp(argv[1], "rmdir") == 0) {
+		command_rmdir(argc, argv);
+	}
+	else if (strcmp(argv[1], "stat") == 0) {
+		command_stat(argc, argv);
+	}
+	else {
+		printf("invalid command\n");
+	}
+	return 0;
+}