2014-02-02 17:25:53 +01:00
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#
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# For a description of the syntax of this configuration file,
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2015-06-28 16:14:53 +02:00
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# see the file kconfig-language.txt in the NuttX tools repository.
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2014-02-02 17:25:53 +01:00
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#
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2015-04-07 21:23:39 +02:00
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menuconfig SYSTEM_CLE
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bool "EMACS-like Command Line Editor"
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2014-02-02 17:25:53 +01:00
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default n
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---help---
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Enable support for NuttX tiny EMACS-like command line editor.
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Omitted features:
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- No keypad cursor control support
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- No word oriented operations.
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Assumptions and Limitations:
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- A VT100 host terminal is assumed.
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- A fixed width character set (like Courier) is assumed
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Memory Usage: Looks like 1.5-2KB
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if SYSTEM_CLE
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2018-08-06 00:05:59 +02:00
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config SYSTEM_CLE_CMD_HISTORY
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bool "Command line history"
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default n
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---help---
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Build in support for Unix-style command history using up and down
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arrow keys. This feature was originally provided by Nghia Ho.
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NOTE: Command line history is kept in an in-memory array and is
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shared. In the FLAT or PROTECTED builds, this history is shared by
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all threads; in the KERNEL build, the command line history is shared
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by all threads in the process. This means that in a FLAT build, for
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example, a built-in application started from NSH will have the same
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history as does NSH if it also uses the CLE. This also means
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that different NSH sessions on serial, USB, or Telnet will also
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share the same history array.
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In a KERNEL build, each process will have a separately allocated
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history array so the issue is lessened. History would still be
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shared amount pthreads within the same process, however.
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if SYSTEM_CLE_CMD_HISTORY
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config SYSTEM_CLE_CMD_HISTORY_LINELEN
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int "Command line history length"
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default 64 if DEFAULT_SMALL
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default 80 if !DEFAULT_SMALL
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---help---
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The maximum length of one command line in the in-memory array. The
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total memory usage for the command line array will be
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SYSTEM_CLE_CMD_HISTORY_LINELEN x SYSTEM_CLE_CMD_HISTORY_LEN. Default:
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64/80
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config SYSTEM_CLE_CMD_HISTORY_LEN
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int "Command line history records"
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default 4 if DEFAULT_SMALL
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default 16 if !DEFAULT_SMALL
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---help---
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The number of lines of history that will be buffered in the in-
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memory array. The total memory usage for the command line array
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will be SYSTEM_CLE_CMD_HISTORY_LINELEN x SYSTEM_CLE_CMD_HISTORY_LEN.
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Default: 16
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endif # SYSTEM_CLE_CMD_HISTORY
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2014-02-02 17:25:53 +01:00
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config SYSTEM_CLE_DEBUGLEVEL
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int "Debug level"
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default 0
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range 0 2
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---help---
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0=Debug off; 1=Print errors on console; 2=Print debug information
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on the console.
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Debug output is generated with syslog. The editor works on
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/dev/console. In order to get both a usable display and also
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readable debug output, syslog'ing should sent to some device other
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than /dev/console (which is the default).
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endif # SYSTEM_CLE
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