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From: Erik M. <er...@us...> - 2001-10-07 23:32:08
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Update of /cvsroot/blob/blob/src/diag
In directory usw-pr-cvs1:/tmp/cvs-serv9847/src/diag
Modified Files:
Makefile.am commands.c
Added Files:
command_hist.c
Log Message:
add command line history to diag (making cmdhist_init() an initcall
while doing so)
--- NEW FILE: command_hist.c ---
/**********************************************************************
* Command history
*
* AUTOR: SELETZ
*
* Implements a simple command history
*
* Copyright (C) 2001 Stefan Eletzhofer <ste...@ww...>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ident "$Id: command_hist.c,v 1.1 2001/10/07 23:32:05 erikm Exp $"
/**********************************************************************
* Includes
*/
#ifdef HAVE_CONFIG_H
# include <blob/config.h>
#endif
#include <blob/command.h>
#include <blob/command_hist.h>
#include <blob/errno.h>
#include <blob/init.h>
#include <blob/util.h>
/**********************************************************************
* Defines / Makros
*/
#define CMDHIST_DEBUG 0
#define MAX_HIST 32
/**********************************************************************
* Programmglobale Variable
*/
/**********************************************************************
* Modulglobale Variable
*/
static int cmdhist_entries = 0;
static int cmdhist_read = 0;
static int cmdhist_write = 0;
static char cmdhistory[MAX_HIST][MAX_COMMANDLINE_LENGTH];
/**********************************************************************
* Prototypen
*/
/**********************************************************************
* Exported functions
*/
/*********************************************************************
* cmd_push
*
* AUTOR: SELETZ
* REVISED:
*
* Push a command to the history buffer
*
*/
int cmdhist_push( char *cmd )
{
if ( !cmd )
return -EINVAL;
if ( strlen( cmd ) > MAX_COMMANDLINE_LENGTH )
return -EINVAL;
if ( strlen( cmd ) == 0 )
return 0;
strcpy( cmdhistory[ cmdhist_write ], cmd );
cmdhist_write ++;
cmdhist_write = cmdhist_write % MAX_HIST;
if ( cmdhist_entries < MAX_HIST )
cmdhist_entries++;
#if CMDHIST_DEBUG
SerialOutputString( "e=" );
SerialOutputDec( cmdhist_entries );
SerialOutputString( " r=" );
SerialOutputDec( cmdhist_read );
SerialOutputString( " w=" );
SerialOutputDec( cmdhist_write );
SerialOutputString( "\n" );
#endif
return 0;
}
/*********************************************************************
* cmdhist_reset
*
* AUTOR: SELETZ
* REVISED:
*
* Resets read ptr
*
*/
int cmdhist_reset( void )
{
cmdhist_read = cmdhist_write;
return 0;
}
/*********************************************************************
* cmd_next
*
* AUTOR: seletz
* REVISED:
*
* Gets next command in history
*
*/
int cmdhist_next( char **cmd )
{
int ptr;
if ( !cmdhist_entries )
return -EINVAL;
if ( !cmd )
return -EINVAL;
ptr = cmdhist_read;
if ( ptr == 0 ) {
if ( cmdhist_entries != MAX_HIST )
return -EINVAL;
ptr = MAX_HIST - 1;
} else {
ptr--;
}
if ( !cmdhistory[ptr][0] )
return -EINVAL;
*cmd = cmdhistory[ptr];
cmdhist_read = ptr;
#if CMDHIST_DEBUG
SerialOutputString( "e=" );
SerialOutputDec( cmdhist_entries );
SerialOutputString( " r=" );
SerialOutputDec( cmdhist_read );
SerialOutputString( " w=" );
SerialOutputDec( cmdhist_write );
SerialOutputString( "\n" );
#endif
return 0;
}
/*********************************************************************
* cmd_prev
*
* AUTOR: SELETZ
* REVISED:
*
* Gets previous command from history
*
*/
int cmdhist_prev( char **cmd )
{
int ptr;
if ( !cmd )
return -EINVAL;
if ( !cmdhist_entries )
return -EINVAL;
ptr = cmdhist_read + 1;
ptr = ptr % MAX_HIST;
if ( ptr == cmdhist_write )
return -EINVAL;
if ( !cmdhistory[ptr][0] )
return -EINVAL;
*cmd = cmdhistory[ptr];
cmdhist_read = ptr;
return 0;
}
/**********************************************************************
* Static functions
*/
/*********************************************************************
* cmdhist_init
*
* AUTOR: SELETZ
* REVISED:
*
* Initializes this module
*
*/
static void cmdhist_init( void )
{
int i;
cmdhist_read = 0;
cmdhist_write = 0;
cmdhist_entries = 0;
i=MAX_HIST - 1;
while ( i-- ) {
cmdhistory[i][0]=0;
}
}
__initlist(cmdhist_init, INIT_LEVEL_OTHER_STUFF);
Index: Makefile.am
===================================================================
RCS file: /cvsroot/blob/blob/src/diag/Makefile.am,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -d -r1.2 -r1.3
--- Makefile.am 2001/10/07 22:09:54 1.2
+++ Makefile.am 2001/10/07 23:32:05 1.3
@@ -36,6 +36,7 @@
# be linked in the wrong order!
diag_elf32_SOURCES = \
start.S \
+ command_hist.c \
commands.c \
initcalls.c \
main.c
Index: commands.c
===================================================================
RCS file: /cvsroot/blob/blob/src/diag/commands.c,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -d -r1.2 -r1.3
--- commands.c 2001/10/07 22:36:11 1.2
+++ commands.c 2001/10/07 23:32:05 1.3
@@ -29,11 +29,106 @@
#include <blob/command.h>
+#include <blob/command_hist.h>
#include <blob/reboot.h>
+#include <blob/serial.h>
#include <blob/terminal.h>
+#include <blob/time.h>
+#include <blob/util.h>
__commandlist(reset_terminal, "reset", resethelp);
__commandlist(reboot, "reboot", reboothelp);
+
+
+
+
+/* more or less like SerialInputString(), but with echo and backspace */
+/* unlike the version in libblob, this version has a command history */
+int GetCommand(char *command, int len, int timeout)
+{
+ u32 startTime, currentTime;
+ char c;
+ int i;
+ int numRead;
+ int maxRead = len - 1;
+
+ TimerClearOverflow();
+
+ startTime = TimerGetTime();
+
+ cmdhist_reset();
+
+ for(numRead = 0, i = 0; numRead < maxRead;) {
+ /* try to get a byte from the serial port */
+ while(!SerialInputByte(&c)) {
+ currentTime = TimerGetTime();
+
+ /* check timeout value */
+ if((currentTime - startTime) >
+ (timeout * TICKS_PER_SECOND)) {
+ /* timeout */
+ command[i++] = '\0';
+ cmdhist_push( command );
+ return(numRead);
+ }
+ }
+
+ if((c == '\r') || (c == '\n')) {
+ command[i++] = '\0';
+
+ /* print newline */
+ SerialOutputByte('\n');
+ cmdhist_push( command );
+ return(numRead);
+ } else if(c == '\b') { /* FIXME: is this backspace? */
+ if(i > 0) {
+ i--;
+ numRead--;
+ /* cursor one position back. */
+ SerialOutputString("\b \b");
+ }
+ } else if ( c == CMDHIST_KEY_UP ) {
+ char *cmd = NULL;
+ /* get cmd from history */
+ if ( cmdhist_next( &cmd ) != 0 )
+ continue;
+
+ /* clear line */
+ while ( numRead-- ) {
+ SerialOutputString("\b \b");
+ }
+
+ /* display it */
+ SerialOutputString(cmd);
+ i = numRead = strlen( cmd );
+ strcpy( command, cmd );
+ } else if ( c == CMDHIST_KEY_DN ) {
+ char *cmd = NULL;
+ /* get cmd from history */
+ if ( cmdhist_prev( &cmd ) != 0 )
+ continue;
+
+ /* clear line */
+ while ( numRead-- ) {
+ SerialOutputString("\b \b");
+ }
+
+ /* display it */
+ SerialOutputString(cmd);
+ i = numRead = strlen( cmd );
+ strcpy( command, cmd );
+ } else {
+ command[i++] = c;
+ numRead++;
+
+ /* print character */
+ SerialOutputByte(c);
+ }
+ }
+
+ cmdhist_push( command );
+ return(numRead);
+}
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