📄 cmd_parse.c
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/**************************************************************************
* *
* Copyright (c) 2002 by Sunplus Technology Co., Ltd. *
* *
* This software is copyrighted by and is the property of Sunplus *
* Technology Co., Ltd. All rights are reserved by Sunplus Technology *
* Co., Ltd. This software may only be used in accordance with the *
* corresponding license agreement. Any unauthorized use, duplication, *
* distribution, or disclosure of this software is expressly forbidden. *
* *
* This Copyright notice MUST not be removed or modified without prior *
* written consent of Sunplus Technology Co., Ltd. *
* *
* Sunplus Technology Co., Ltd. reserves the right to modify this *
* software without notice. *
* *
* Sunplus Technology Co., Ltd. *
* 19, Innovation First Road, Science-Based Industrial Park, *
* Hsin-Chu, Taiwan, R.O.C. *
* *
* Author: Wilson Lu *
* *
**************************************************************************/
#include <string.h>
#include <stdio.h>
#include "cmd.h"
/****************************************************************************
* C O N S T A N T S *
****************************************************************************/
#define CMD_HISTORIES 8
#define CMD_BUF_SIZE 64
#define HELP_CMD_HELP "Provides help for commands. Try 'help <command>'"
#define HELP_CMD_LIST "Provides list for commands."
/****************************************************************************
* G L O B A L D A T A *
****************************************************************************/
static void cmdHelpDisp(UINT8 *parameters);
static void cmdListDisp(UINT8 *parameters);
static cmd_t cmdHelp = {"help", cmdHelpDisp, HELP_CMD_HELP, 0x0};
static cmd_t cmdList = {"ls", cmdListDisp, HELP_CMD_LIST, 0x0};
static cmd_t *pcmds = &cmdHelp;
static UINT8 buffer[CMD_BUF_SIZE];
static UINT32 pos;
static UINT32 logIn;
static UINT32 histBuf[CMD_HISTORIES][CMD_BUF_SIZE];
static UINT32 histPos[CMD_HISTORIES];
static UINT32 histIns;
static UINT32 histOutput;
static UINT32 histInsWrap;
static UINT32 histOutputWrap;
/**************************************************************************
* *
* Function Name: *
* *
* Purposes: *
* *
* Descriptions: *
* *
* Arguments: *
* *
* Returns: None *
* *
* See also: *
* *
**************************************************************************/
void
cmdWhiteSpaceStrip(
UINT8 **pptr
)
{
UINT8 *ptr;
ptr = *pptr;
while ( *ptr != '\0' ) {
if ((*ptr != ' ') &&
(*ptr != '\t') &&
(*ptr != '\n') &&
(*ptr != '\r')) {
break;
}
else {
ptr++;
}
}
*pptr = ptr;
}
/**************************************************************************
* *
* Function Name: *
* *
* Purposes: *
* *
* Descriptions: *
* *
* Arguments: *
* *
* Returns: None *
* *
* See also: *
* *
**************************************************************************/
void
cmdWhiteSpaceReplace(
UINT8 **pptr
)
{
UINT8 *ptr;
ptr = *pptr;
while ( *ptr != '\0' ) {
if ((*ptr != ' ') &&
(*ptr != '\t') &&
(*ptr != '\n') &&
(*ptr != '\r')) {
break;
}
else {
**pptr = '\0';
ptr++;
}
}
*pptr = ptr;
}
/**************************************************************************
* *
* Function Name: *
* *
* Purposes: *
* *
* Descriptions: *
* *
* Arguments: *
* *
* Returns: None *
* *
* See also: *
* *
**************************************************************************/
void
cmdTokenStrip(
UINT8 **pptr
)
{
UINT8 *ptr;
ptr = *pptr;
while ( *ptr != '\0' ) {
if ((*ptr == ' ') ||
(*ptr == '\t') ||
(*ptr == '\n') ||
(*ptr == '\r')) {
break;
}
else {
ptr++;
}
}
*pptr = ptr;
}
/**************************************************************************
* *
* Function Name: *
* *
* Purposes: *
* *
* Descriptions: *
* *
* Arguments: *
* *
* Returns: None *
* *
* See also: *
* *
**************************************************************************/
SINT32 strtoulex(char *pdt)
{
char *pt = pdt;
UINT32 retd = 0;
SINT32 sign = 1;
if (pt != NULL) {
if (pt[0] == '-') {
sign = -1;
pt ++;
}
if (pt[0] == '0' && (pt[1] == 'x' || pt[1] == 'X')) {
for(pt+=2 ; *pt!=' ' && *pt!=0 && *pt!='\t' && *pt!='\n' && *pt!='\r'; pt++){
if(*pt>='0' && *pt<='9'){
retd = retd*16 + (*pt-'0');
} else if (*pt>='a' && *pt<='f') {
retd = retd*16 + (*pt-'a') + 10;
} else if (*pt>='A' && *pt<='F') {
retd = retd*16 + (*pt-'A') + 10;
} else {
retd = 0;
break;
}
}
} else {
for ( ; *pt!=' ' && *pt!=0 && *pt!='\t' && *pt!='\n' && *pt!='\r'; pt++) {
if (*pt>='0' && *pt<='9') {
retd = retd*10 + (*pt-'0');
} else {
retd = 0;
break;
}
}
}
}
return(retd*sign);
}
/**************************************************************************
* *
* Function Name: *
* *
* Purposes: *
* *
* Descriptions: *
* *
* Arguments: *
* *
* Returns: None *
* *
* See also: *
* *
**************************************************************************/
static void
cmdHelpShow(
cmd_t *bc,
UINT32 maxCmdLen
)
{
const UINT8 *help = bc->phelp;
UINT32 helpLen = strlen(help);
UINT32 spaces = maxCmdLen - strlen(bc->cmd);
UINT32 showThisLine = 0;
UINT32 lineOne = TRUE;
UINT32 c;
printf_0("%s", bc->cmd);
if ( helpLen == 0 ) {
printf_0(" - No help.\n");
return;
}
while ( helpLen ) {
while ( spaces > 1 ) {
printf_0(" ");
spaces--;
};
if ( lineOne ) {
printf_0(" - ");
}
spaces = maxCmdLen + 3; /* 3: " - " has three characters */
lineOne = FALSE;
/*
* See if greater then the line length if so, work back from the end for a
* space, tab or lf or cr.
*/
if ( helpLen > (78 - maxCmdLen - 3) ) {
for ( showThisLine = (78 - maxCmdLen - 3) - 1;
showThisLine;
showThisLine-- )
if ( (help[showThisLine] == ' ') ||
(help[showThisLine] == '\n') ||
(help[showThisLine] == '\r') )
break;
/*
* If showThisLine is 0, it is a very long word !!
*/
if ( showThisLine == 0 )
showThisLine = (78 - maxCmdLen - 3) - 1;
} else
showThisLine = helpLen;
for ( c = 0; c < showThisLine; c++ ) {
if ( (help[c] == '\r') || (help[c] == '\n') ) {
showThisLine = c;
}
else {
printf_0("%c", help[c]);
}
}
printf_0("\n");
help += showThisLine;
helpLen -= showThisLine;
/*
* Move past the line feeds or what ever else is being skipped.
*/
while ( helpLen ) {
if ( (*help != '\r') && (*help != '\n') ) {
break;
}
if ( *help != ' ' ) {
help++;
helpLen--;
break;
}
help++;
helpLen--;
}
}
}
/**************************************************************************
* *
* Function Name: *
* *
* Purposes: *
* *
* Descriptions: *
* *
* Arguments: *
* *
* Returns: None *
* *
* See also: *
* *
**************************************************************************/
static void
cmdHelpDisp(
UINT8 *parameters
)
{
cmd_t *bc = pcmds;
UINT32 maxCmdLen = 0, i = 0;
UINT32 len;
/* See if the user asked for a particular help. */
if ( *parameters != '\0' ) {
while ( bc ) {
if ( strcmp(bc->cmd, parameters) == 0 ) {
cmdHelpShow(bc, strlen(bc->cmd));
return;
}
bc = bc->pnext;
}
printf_0("no help for command '%s' found, try just 'help'\n", parameters);
return;
}
/*
* Find the largest command size.
*/
while ( bc ) {
len = strlen(bc->cmd);
if ( len > maxCmdLen ) {
maxCmdLen = len;
}
bc = bc->pnext;
}
maxCmdLen++;
bc = pcmds;
/*
* Now some nice formatting for the help.
*/
printf_0("-\n ");
while ( bc ) {
printf_0("%-8s ", bc->cmd);
i++;
if( i == 8 ) {
printf_0("\n ");
i = 0;
}
if(bc->pnext->cmd[0] != bc->cmd[0]){
if(i == 0) printf_0("\r-\n ");
else{
printf_0("\n-\n ");
i = 0;
}
}
bc = bc->pnext;
}
if ( i != 0 ) {
printf_0("\n");
}
}
/**************************************************************************
* *
* Function Name: *
* *
* Purposes: *
* *
* Descriptions: *
* *
* Arguments: *
* *
* Returns: None *
* *
* See also: *
* *
**************************************************************************/
static void
cmdListDisp(
UINT8 *parameters
)
{
cmd_t *bc = pcmds;
UINT32 i = 0;
/*
* Now some nice formatting for the help.
*/
printf_0("-\n ");
while ( bc ) {
printf_0("%-8s ", bc->cmd);
i++;
if( i == 8 ) {
printf_0("\n ");
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