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[lib][console] add overridable switch to turn off console history

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set DEFINES += CONSOLE_ENABLE_HISTORY=0 in a rules.mk
This commit is contained in:
Travis Geiselbrecht
2012-05-23 13:44:34 -07:00
parent a4e814c36d
commit d63cbe77ad
1 changed files with 20 additions and 0 deletions
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20
lib/console/console.c
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@@ -33,6 +33,10 @@
#include <lib/env.h>
#endif
#ifndef CONSOLE_ENABLE_HISTORY
#define CONSOLE_ENABLE_HISTORY 1
#endif
#define LINE_LEN 512
#define HISTORY_LEN 16
@@ -47,6 +51,7 @@ static mutex_t *command_lock;
int lastresult;
static bool abort_script;
#if CONSOLE_ENABLE_HISTORY
/* command history stuff */
static char *history; // HISTORY_LEN rows of LINE_LEN chars a piece
static uint history_next;
@@ -57,6 +62,7 @@ static uint start_history_cursor(void);
static const char *next_history(uint *cursor);
static const char *prev_history(uint *cursor);
static void dump_history(void);
#endif
/* list of installed commands */
static cmd_block *command_list = NULL;
@@ -69,14 +75,18 @@ extern cmd_block __commands_end;
static int cmd_help(int argc, const cmd_args *argv);
static int cmd_test(int argc, const cmd_args *argv);
#if CONSOLE_ENABLE_HISTORY
static int cmd_history(int argc, const cmd_args *argv);
#endif
STATIC_COMMAND_START
STATIC_COMMAND("help", "this list", &cmd_help)
#if DEBUGLEVEL > 1
STATIC_COMMAND("test", "test the command processor", &cmd_test)
#if CONSOLE_ENABLE_HISTORY
STATIC_COMMAND("history", "command history", &cmd_history)
#endif
#endif
STATIC_COMMAND_END(help);
int console_init(void)
@@ -92,11 +102,14 @@ int console_init(void)
console_register_commands(block);
}
#if CONSOLE_ENABLE_HISTORY
init_history();
#endif
return 0;
}
#if CONSOLE_ENABLE_HISTORY
static int cmd_history(int argc, const cmd_args *argv)
{
dump_history();
@@ -187,6 +200,7 @@ static const char *prev_history(uint *cursor)
*cursor = i;
return str;
}
#endif
static const cmd *match_command(const char *command)
{
@@ -209,7 +223,9 @@ static int read_debug_line(const char **outbuffer, void *cookie)
{
int pos = 0;
int escape_level = 0;
#if CONSOLE_ENABLE_HISTORY
uint history_cursor = start_history_cursor();
#endif
char *buffer = debug_buffer;
@@ -269,6 +285,7 @@ static int read_debug_line(const char **outbuffer, void *cookie)
puts("\x1b[1D"); // move to the left one
}
break;
#if CONSOLE_ENABLE_HISTORY
case 65: // up arrow -- previous history
case 66: // down arrow -- next history
// wipe out the current line
@@ -286,6 +303,7 @@ static int read_debug_line(const char **outbuffer, void *cookie)
pos = strlen(buffer);
puts(buffer);
break;
#endif
default:
break;
}
@@ -306,8 +324,10 @@ done:
// null terminate
buffer[pos] = 0;
#if CONSOLE_ENABLE_HISTORY
// add to history
add_history(buffer);
#endif
// return a pointer to our buffer
*outbuffer = buffer;