load-buffer command

cmd-load-buffer.c

@@ -0,0 +1,102 @@
+/* $Id: cmd-load-buffer.c,v 1.1 2009-01-25 19:00:10 tcunha Exp $ */
+
+/*
+ * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "tmux.h"
+
+/*
+ * Loads a session paste buffer from a file.
+ */
+
+int	cmd_load_buffer_exec(struct cmd *, struct cmd_ctx *);
+
+const struct cmd_entry cmd_load_buffer_entry = {
+	"load-buffer", "loadb",
+	CMD_BUFFER_SESSION_USAGE " path",
+	CMD_ARG1,
+	cmd_buffer_init,
+	cmd_buffer_parse,
+	cmd_load_buffer_exec,
+	cmd_buffer_send,
+	cmd_buffer_recv,
+	cmd_buffer_free,
+	cmd_buffer_print
+};
+
+int
+cmd_load_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
+{
+	struct cmd_buffer_data	*data = self->data;
+	struct session		*s;
+	struct stat		statbuf;
+	FILE			*f;
+	char			*buf;
+	u_int			limit;
+
+	if ((s = cmd_find_session(ctx, data->target)) == NULL)
+		return (-1);
+
+	if (stat(data->arg, &statbuf) < 0) {
+		ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
+		return (-1);
+	}
+
+	if ((f = fopen(data->arg, "r")) == NULL) {
+		ctx->error(ctx, "%s: %s", data->arg, strerror(errno));
+		return (-1);
+	}
+
+	/*
+	 * We don't want to die due to memory exhaustion, hence xmalloc can't
+	 * be used here.
+	 */
+	if ((buf = malloc(statbuf.st_size + 1)) == NULL) {
+		ctx->error(ctx, "malloc error: %s", strerror(errno));
+		return (-1);
+	}
+
+	if (fread(buf, 1, statbuf.st_size, f) != statbuf.st_size) {
+		ctx->error(ctx, "%s: fread error", data->arg);
+		xfree(buf);
+		fclose(f);
+		return (-1);
+	}
+
+	buf[statbuf.st_size] = '\0';
+	fclose(f);
+
+	limit = options_get_number(&s->options, "buffer-limit");
+	if (data->buffer == -1) {
+		paste_add(&s->buffers, buf, limit);
+		return (0);
+	}
+	if (paste_replace(&s->buffers, data->buffer, buf) != 0) {
+		ctx->error(ctx, "no buffer %d", data->buffer);
+		xfree(buf);
+		return (-1);
+	}
+
+	return (0);
+}