add cluster i/o pipeline

src/wrap.c

@@ -1,14 +1,16 @@
+#include "bin.h"
 #include "commands.h"
+#include "write.h"
 
 #include <blue/cmd.h>
-#include <stdlib.h>
+#include <blue/term.h>
+#include <errno.h>
 
 enum {
 	OPT_OUTPATH,
 	OPT_OUTPATH_PATH,
 
 	ARG_FILE,
-	ARG_FILE_PATH,
 
 	OPT_TAGGED_FILE,
 	OPT_TAGGED_FILE_TAG,
@@ -20,6 +22,65 @@ static int wrap(
 	const b_arglist *opt,
 	const b_array *args)
 {
+	const char *in_path = NULL, *out_path = NULL;
+	b_arglist_get_string(opt, B_COMMAND_INVALID_ID, ARG_FILE, 0, &in_path);
+	b_arglist_get_string(opt, OPT_OUTPATH, OPT_OUTPATH_PATH, 0, &out_path);
+
+	printf("in path: %s\n", in_path);
+	printf("out path: %s\n", out_path);
+
+	FILE *inp = fopen(in_path, "rb");
+	if (!inp) {
+		b_err("cannot open '%s'", in_path);
+		b_i("reason: %s", strerror(errno));
+		return -1;
+	}
+
+	FILE *outp = fopen(out_path, "wb");
+	if (!outp) {
+		b_err("cannot open '%s'", out_path);
+		b_i("reason: %s", strerror(errno));
+		return -1;
+	}
+
+	struct ec3_writer *writer = NULL;
+	struct ec3_parameters param = {
+		.p_outp = outp,
+		.p_cluster_size = EC3_CLUSTER_16K,
+		.p_compression_func = EC3_COMPRESSION_ZSTD,
+	};
+	enum ec3_status status = ec3_writer_create(&param, &writer);
+
+	if (status != EC3_SUCCESS) {
+		b_err("cannot initialise EC3 writer");
+		return -1;
+	}
+
+	struct ec3_tag_writer *tag = NULL;
+	status = ec3_writer_create_tag(writer, EC3_TAG_BLOB, 0, 0, &tag);
+
+	if (status != EC3_SUCCESS) {
+		b_err("cannot initialise EC3 tag writer");
+		return -1;
+	}
+
+	char buf[4096];
+
+	while (1) {
+		size_t r = fread(buf, 1, sizeof buf, inp);
+		status = ec3_tag_writer_write(tag, buf, r);
+
+		if (r < sizeof buf) {
+			break;
+		}
+	}
+
+	ec3_tag_writer_finish(tag);
+	ec3_writer_finish(writer);
+
+	fclose(inp);
+	fclose(outp);
+
 	return 0;
 }
 
@@ -29,8 +90,8 @@ B_COMMAND(CMD_WRAP, CMD_ROOT)
 	B_COMMAND_SHORT_NAME('W');
 	B_COMMAND_DESC(
 		"wrap one or more files into an ec3 container. each file will "
-		"be "
-		"stored in a separate blob tag within the created container.");
+		"be stored in a separate blob tag within the created "
+		"container.");
 	B_COMMAND_FLAGS(B_COMMAND_SHOW_HELP_BY_DEFAULT);
 	B_COMMAND_FUNCTION(wrap);