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parser.c
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parser.c
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/*
* parser.h
*
* Created on: 3/ott/2012
* Author: Matteo Ragni
*/
#include "parser.h"
PipedStruct InitialParse;
TokenStruct CmdStruct[MAX_PIPE];
void (*parserCall)(TokenStruct[MAX_PIPE]) = NULL;
void init_PipedStruct(PipedStruct* P) {
unsigned char i;
unsigned char f;
for (i=MAX_PIPE; i>0; i--) {
for (f=CHAR_PIPE; f>0; f--) {
P->Token[i-1][f-1] = '\0';
}
}
P->nToken=0;
}
void init_TokenStruct(TokenStruct* P) {
unsigned char i;
unsigned char f;
for (i=MAX_TOKEN; i>0; i--) {
for (f=CHAR_CMD; f>0; f--)
P->Token[i-1][f-1] = '\0';
}
P->nToken=0;
}
void copyTokenStruct (TokenStruct* p, const TokenStruct* v){
init_TokenStruct(p);
for(p->nToken = 0; p->nToken<v->nToken; p->nToken++){
strcpy(p->Token[p->nToken],v->Token[p->nToken]);
}
p->nToken = v->nToken;
}
char SaveNext_Pipe(const char* input, PipedStruct* P) {
if (P->nToken < MAX_PIPE) {
strcpy(P->Token[P->nToken], input);
P->nToken++;
return 0;
}
return 1;
}
char SaveNext_Token(const char* input, TokenStruct* P) {
if (P->nToken < MAX_TOKEN) {
strcpy(P->Token[P->nToken], input);
P->nToken++;
return 0;
}
return 1;
}
void (*ParseCmd(TokenStruct TokenC))(TokenStruct[MAX_PIPE]) {
if ( strcmp(TokenC.Token[0], "help") == 0 ) return &parser_help;
else if ( strcmp(TokenC.Token[0], "adc") == 0 ) return &parser_adc;
else if ( strcmp(TokenC.Token[0], "timer") == 0 ) return &parser_timer;
else return NULL;
}
char parser(char* cmdLine) {
unsigned char i;
char *pch;
init_PipedStruct(&InitialParse);
pch = strtok(cmdLine, pipeDel);
while (pch != NULL) {
SaveNext_Pipe(pch, &InitialParse);
pch = strtok(NULL, pipeDel);
}
if (InitialParse.nToken > MAX_PIPE) {
UART_write(TOO_PIPED_CMD, TOO_PIPED_CMDN);
return 1;
}
if ( InitialParse.Token[0][0]=='\0' ) {
return 1;
}
for (i=MAX_PIPE; i>0; i--) {
init_TokenStruct(&(CmdStruct[MAX_PIPE-i]));
pch = strtok(InitialParse.Token[MAX_PIPE-i],tokenDel);
while (pch != NULL) {
SaveNext_Token(pch, &(CmdStruct[MAX_PIPE-i]));
pch = strtok(NULL, tokenDel);
}
}
parserCall = ParseCmd(CmdStruct[0]);
if (parserCall != NULL) {
(*parserCall)(CmdStruct);
parserCall = NULL;
return 0;
}
else {
UART_write(UNKNOW_CMD, UNKNOW_CMDN);
return 1;
}
//return 0;
}
// FUNZIONI DI PARSING
// help
#define HELP_PIPE "pipe"
#define HELP_ADC "adc"
#define HELP_TIMER "timer"
#define HELP_HELP "help"
void parser_help(TokenStruct TokenC[MAX_PIPE]) {
if (TokenC[0].Token[1][0] == '\0') helpExec(0);
else if (strcmp(HELP_HELP,TokenC[0].Token[1])==0) helpExec(1);
else if (strcmp(HELP_ADC,TokenC[0].Token[1])==0) helpExec(2);
else if (strcmp(HELP_TIMER,TokenC[0].Token[1])==0) helpExec(3);
else if (strcmp(HELP_PIPE,TokenC[0].Token[1])==0) helpExec(4);
//else if (strcmp(__EG,TokenC[0]->Token[1])==0) helpExec(99);
else helpExec(100); // Non riconosciuto
}
// adc
#define LACK_PARAMETER "\n\r[ADC]: Manca un parametro\n\r"
#define LACK_PARAMETER_N 29
#define CH_ERROR "\n\r[ADC]: Regola chiamata canale violata (fuori dal range 1..16 o temp)\n\r"
#define CH_ERROR_N 70
void parser_adc(TokenStruct TokenC[MAX_PIPE]) {
if (TokenC[0].Token[1][0] == '\0') {
UART_write(LACK_PARAMETER, LACK_PARAMETER_N);
return;
}
char ch;
if (strcmp(TokenC[0].Token[1],"temp")==0) {
ch=11;
}
else {
ch = (char)atoi(TokenC[0].Token[1]);
if (ch < 1 || ch > 16) {
UART_write(CH_ERROR, CH_ERROR_N);
return;
}
}
adcExec(ch);
}
// timer
#define MODE_UNKNOWN "\n\t[TIMER]: Modo non riconosciuto\n\r"
#define MODE_UNKNOWN_N 34
#define MODELESS "\n\t[TIMER]: Modo non impostato\n\r"
#define MODELESS_N 31
#define OUTOFTIME "\n\t[TIMER]: Inserire intervallo tra 500 e 65534\n\r"
#define OUTOFTIME_N 48
#define TIMELESS "\n\t[TIMER]: Tempo non impostato\n\r"
#define TIMELESS_N 34
extern void (*function)(TokenStruct[MAX_PIPE]);
extern TokenStruct TempTimerCmd[MAX_PIPE];
void parser_timer(TokenStruct TokenC[MAX_PIPE]) {
char mode;
unsigned int interval;
if ( TokenC[0].Token[1][0] != '\0' ) {
// Parsing modo
if(strcmp(TokenC[0].Token[1],"off")==0) mode = 0;
else if(strcmp(TokenC[0].Token[1],"on")==0) mode = 1;
else if(strcmp(TokenC[0].Token[1],"periodic")==0) mode = 2;
else {
UART_write(MODE_UNKNOWN,MODE_UNKNOWN_N);
return;
}
}
else {
UART_write(MODELESS,MODELESS_N);
return;
}
if ( TokenC[0].Token[2][0] != '\0' ) {
if (atol(TokenC[0].Token[2]) <= 65534 && atol(TokenC[0].Token[2])>=500) interval = atol(TokenC[0].Token[2]);
else {
UART_write(OUTOFTIME,OUTOFTIME_N);
return;
}
}
else {
if (mode != 0) {
UART_write(TIMELESS,TIMELESS_N);
return;
}
}
if (TokenC[1].Token[0][0] != '\0') {
function = ParseCmd(TokenC[1]);
copyTokenStruct(&TempTimerCmd[0], &TokenC[1]);
}
TimerExec(mode,interval);
}
// EVENT HANDLER
extern char TimerEvent;
void eventHandler(){
if (TimerEvent == 1) {
TimerEvent = 0;
TimerEventHandler();
UART_printPrompt();
}
}