writef: added command to write content of variable to file.
Adds a newline at the emd of the string.
Usage: writef VAR FILE
Signed-off-by: Gerd Pauli <gp@xxxxxxxxxxxxxxxxxx>
---
commands/Kconfig | 11 +++++++++
commands/Makefile | 1 +
commands/writef.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 83 insertions(+)
create mode 100644 commands/writef.c
diff --git a/commands/Kconfig b/commands/Kconfig
index ae2dc4b..af2b215 100644
--- a/commands/Kconfig
+++ b/commands/Kconfig
@@ -1082,6 +1082,17 @@ config CMD_READF
whitespaces are removed, nonvisible characters are stripped. Input is
limited to 1024 characters.
+config CMD_WRITEF
+ tristate
+ prompt "writef"
+ help
+ Write variable into file
+
+ Usage: writef VAR FILE
+
+ Write Content of VARiable to FILE. A Newline is added
+ at the end of the String.
+
config CMD_SLEEP
tristate
prompt "sleep"
diff --git a/commands/Makefile b/commands/Makefile
index 37486dc..16c1768 100644
--- a/commands/Makefile
+++ b/commands/Makefile
@@ -103,6 +103,7 @@ obj-$(CONFIG_CMD_BOOT) += boot.o
obj-$(CONFIG_CMD_DEVINFO) += devinfo.o
obj-$(CONFIG_CMD_DRVINFO) += drvinfo.o
obj-$(CONFIG_CMD_READF) += readf.o
+obj-$(CONFIG_CMD_WRITEF) += writef.o
obj-$(CONFIG_CMD_MENUTREE) += menutree.o
obj-$(CONFIG_CMD_2048) += 2048.o
obj-$(CONFIG_CMD_REGULATOR) += regulator.o
diff --git a/commands/writef.c b/commands/writef.c
new file mode 100644
index 0000000..dea18b0
--- /dev/null
+++ b/commands/writef.c
@@ -0,0 +1,71 @@
+/* -*- Mode:C; c-file-style:"linux"; -*- */
+
+/*
+ * writef.c - Write Content of Variable to File
+ *
+ * Copyright (c) 2017 Gerd Pauli <gp@xxxxxxxxxxxxxxxxxx>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program 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.
+ *
+ */
+
+#include <common.h>
+#include <command.h>
+#include <fs.h>
+#include <libfile.h>
+#include <malloc.h>
+#include <linux/stat.h>
+#include <linux/ctype.h>
+#include <environment.h>
+
+static int do_writef(int argc, char *argv[])
+{
+ const char *val;
+ char *variable, *filename;
+ size_t size;
+ void *buf;
+ int ret;
+
+ if (argc != 3)
+ return COMMAND_ERROR_USAGE;
+
+ variable = argv[1];
+ filename = argv[2];
+
+ val = getenv(variable);
+ if (val == NULL)
+ return COMMAND_ERROR;
+
+ size = strlen(val);
+ size++;
+
+ buf = xmalloc(size+1);
+ sprintf(buf, "%s\n", val);
+
+ ret = write_file(filename, buf, size);
+ free(buf);
+ return ret;
+}
+
+BAREBOX_CMD_HELP_START(writef)
+BAREBOX_CMD_HELP_TEXT("Write Content of VARiable to FILE. A Newline is added")
+BAREBOX_CMD_HELP_TEXT("at the end of the String.")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(writef)
+.cmd = do_writef,
+ BAREBOX_CMD_DESC("write variable into file")
+ BAREBOX_CMD_OPTS("VAR FILE")
+ BAREBOX_CMD_GROUP(CMD_GRP_SCRIPT)
+ BAREBOX_CMD_HELP(cmd_writef_help)
+ BAREBOX_CMD_END
--
1.9.1
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