mhu/shellmatta
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implemented most text based functions:

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- byte wise processing and call of the command function
- history buffer
- auto complete
- edit functions (backspace, del, arrow keys, pos1, end)
This commit is contained in:
prozessorkern 2019-06-21 04:47:35 +02:00
parent 799903dcc1
commit bf7f366cb6
2 changed files with 774 additions and 63 deletions
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66
api/shellmatta.h
View File

@ -37,6 +37,7 @@
#define _SHELLMATTA_H_ #define _SHELLMATTA_H_
#include <stdint.h> #include <stdint.h>
#include <stdbool.h>
/** /**
* @brief definition of shellmatta return codes * @brief definition of shellmatta return codes
@ -46,25 +47,40 @@ typedef enum
SHELLMATTA_OK = 0u, /**< everything is OK */ SHELLMATTA_OK = 0u, /**< everything is OK */
SHELLMATTA_ERROR , /**< error occured */ SHELLMATTA_ERROR , /**< error occured */
SHELLMATTA_CONTINUE , /**< the function is not over */ SHELLMATTA_CONTINUE , /**< the function is not over */
SHELLMATTA_USE_FAULT /**< parameter error - wrong usage */ SHELLMATTA_USE_FAULT , /**< parameter error - wrong usage */
SHELLMATTA_DUPLICATE /**< duplicate command */
} shellmatta_retCode_t; } shellmatta_retCode_t;
/**
* @brief definition of shellmatta insert mode
*/
typedef enum
{
SHELLMATTA_MODE_INSERT = 0u, /**< insert mode */
SHELLMATTA_MODE_OVERWRITE , /**< overwrite mode */
} shellmatta_mode_t;
/** /**
* @brief shellmatta command function definition * @brief shellmatta command function definition
*/ */
typedef shellmatta_retCode_t (*shellmatta_cmdFct_t)(int argc, char *argv[]); typedef shellmatta_retCode_t (*shellmatta_cmdFct_t)(int argc, char *argv[]);
/**
* @brief shellmatta write function definition
*/
typedef shellmatta_retCode_t (*shellmatta_write_t)(const char* data, uint32_t length);
/** /**
* @brief structure of one shellmatta command * @brief structure of one shellmatta command
*/ */
typedef struct shellmatta_cmd typedef struct shellmatta_cmd
{ {
char *cmd; /**< command name */ char *cmd; /**< command name */
char *cmdAlias; /**< command alias */ char *cmdAlias; /**< command alias */
char *helpText; /**< help text to print in "help" command */ char *helpText; /**< help text to print in "help" command */
char *usageText; /**< usage text to print on parameter error */ char *usageText; /**< usage text to print on parameter error */
shellmatta_cmdFct_t cmdFct; /**< pointer to the cmd callack function */ shellmatta_cmdFct_t cmdFct; /**< pointer to the cmd callack function */
struct shellmatta_cmd *next; /**< pointer to next command or NULL */ struct shellmatta_cmd *next; /**< pointer to next command or NULL */
} shellmatta_cmd_t; } shellmatta_cmd_t;
/** /**
@ -72,17 +88,35 @@ typedef struct shellmatta_cmd
*/ */
typedef struct typedef struct
{ {
uint8_t *buffer; /**< input buffer */ uint8_t *buffer; /**< input buffer */
uint32_t bufferSize; /**< size of the input buffer */ uint32_t bufferSize; /**< size of the input buffer */
uint32_t bufferWritePointer; /**< offset of the current write operation */ uint32_t inputCount; /**< offset of the current write operation */
uint32_t bufferReadPointer; /**< offset of the current read operation */ uint32_t cursor; /**< offset where the cursor is at */
uint8_t *historyBuffer; /**< buffer to store the last commands */ uint8_t *historyBuffer; /**< buffer to store the last commands */
uint32_t historyBufferSize; /**< size of the history buffer */ uint32_t historyBufferSize; /**< size of the history buffer */
shellmatta_cmd_t *cmdList; /**< pointer to the first command */ uint32_t historyStart; /**< index of the oldest stored command */
uint32_t historyEnd; /**< index of the newest stored command */
uint32_t historyRead; /**< index of the current search */
bool historyReadUp; /**< flag to show the last history dir */
uint32_t tabCounter; /**< counts the tabulator key presses */
uint32_t escapeCounter; /**< counts the characters of an escape seq */
uint8_t escapeChars[4]; /**< buffer to save the escape characters */
bool echoEnabled; /**< if true the input is printed */
bool dirty; /**< dirty flag to show changes */
const char *prompt; /**< prompt is printed after every command */
shellmatta_mode_t mode; /**< mode of the shell */
shellmatta_write_t write; /**< pointer to write function */
shellmatta_cmd_t *cmdList; /**< pointer to the first command */
} shellmatta_instance_t; } shellmatta_instance_t;
void shellmatta_doInit(shellmatta_instance_t *inst, uint8_t *buffer, uint32_t bufferSize, uint8_t *historyBuffer, uint32_t historyBufferSize); shellmatta_retCode_t shellmatta_doInit( shellmatta_instance_t *inst,
void shellmatta_addCmd(shellmatta_instance_t *inst, shellmatta_cmd_t *cmd); uint8_t *buffer,
uint32_t bufferSize,
uint8_t *historyBuffer,
uint32_t historyBufferSize,
const char *prompt,
shellmatta_write_t writeFct);
shellmatta_retCode_t shellmatta_addCmd(shellmatta_instance_t *inst, shellmatta_cmd_t *cmd);
void shellmatta_doTask(shellmatta_instance_t *inst, uint32_t time); void shellmatta_doTask(shellmatta_instance_t *inst, uint32_t time);
void shellmatta_processData(shellmatta_instance_t *inst, char *data, uint32_t size); void shellmatta_processData(shellmatta_instance_t *inst, char *data, uint32_t size);
void shellmatta_printf(shellmatta_instance_t *inst, const char *fmt, ...); void shellmatta_printf(shellmatta_instance_t *inst, const char *fmt, ...);

771
src/shellmatta.c
View File

@ -37,6 +37,560 @@
#include <stdio.h> #include <stdio.h>
#include <stddef.h> #include <stddef.h>
#include <string.h> #include <string.h>
#include <stdarg.h>
#define SHELLMATTA_MIN(a,b) (((a) > (b)) ? (b) : (a))
#define SHELLMATTA_MAX(a,b) (((a) > (b)) ? (b) : (a))
static void writeEcho( shellmatta_instance_t *inst,
const uint8_t *data,
uint32_t length)
{
if(true == inst->echoEnabled)
{
inst->write(data, length);
}
}
static void appendHistoryByte(shellmatta_instance_t *inst, uint8_t byte)
{
inst->historyEnd ++;
if(inst->historyEnd >= inst->historyBufferSize)
{
inst->historyEnd = 0u;
}
inst->historyBuffer[inst->historyEnd] = byte;
if(inst->historyEnd == inst->historyStart)
{
/* move the start pointer to the next termination (0) */
do
{
inst->historyStart ++;
if(inst->historyStart >= inst->historyBufferSize)
{
inst->historyStart = 0u;
}
}while(0u != inst->historyBuffer[inst->historyStart]);
}
}
static bool getHistoryByte(shellmatta_instance_t *inst, uint8_t *byte)
{
bool ret = false;
if(inst->historyRead != inst->historyStart)
{
*byte = inst->historyBuffer[inst->historyRead];
if(0u == inst->historyRead)
{
inst->historyRead = inst->historyBufferSize;
}
inst->historyRead --;
ret = true;
}
return ret;
}
static void storeHistoryCmd(shellmatta_instance_t *inst)
{
if( (inst->historyBufferSize > inst->inputCount)
&& (0u != inst->inputCount)
&& (true == inst->dirty))
{
appendHistoryByte(inst, 0u);
for(uint32_t i = inst->inputCount; i > 0u; i --)
{
appendHistoryByte(inst, inst->buffer[i - 1u]);
}
}
inst->dirty = false;
}
static bool navigateHistoryCmd(shellmatta_instance_t *inst, int32_t cnt)
{
bool ret = true;
uint32_t tempReadIdx = 0u;
while((cnt > 0) && (true == ret))
{
if(inst->historyRead != inst->historyEnd)
{
inst->historyRead ++;
}
while(inst->historyRead != inst->historyEnd)
{
inst->historyRead ++;
if(inst->historyRead >= inst->historyBufferSize)
{
inst->historyRead = 0u;
}
if( (inst->historyRead != inst->historyEnd)
&& (0u == inst->historyBuffer[inst->historyRead]))
{
if(0u == inst->historyRead)
{
inst->historyRead = inst->historyBufferSize;
}
inst->historyRead --;
cnt -= 1;
break;
}
}
if(inst->historyRead == inst->historyEnd)
{
ret = false;
}
}
while((cnt < 0) && (true == ret))
{
tempReadIdx = inst->historyRead;
while(inst->historyRead != inst->historyStart)
{
if(0u == inst->historyRead)
{
inst->historyRead = inst->historyBufferSize;
}
inst->historyRead --;
if( (inst->historyRead != inst->historyStart)
&& (0u == inst->historyBuffer[inst->historyRead]))
{
if(0u == inst->historyRead)
{
inst->historyRead = inst->historyBufferSize;
}
inst->historyRead --;
cnt += 1;
break;
}
}
if(inst->historyRead == inst->historyStart)
{
inst->historyRead = tempReadIdx;
inst->historyReadUp = false;
ret = false;
}
}
return ret;
}
static void restoreHistoryCmd(shellmatta_instance_t *inst)
{
uint8_t byte;
bool ret = true;
ret = getHistoryByte(inst, &byte);
while((ret == true) && (byte != 0u))
{
inst->buffer[inst->inputCount] = byte;
inst->inputCount ++;
inst->cursor ++;
ret = getHistoryByte(inst, &byte);
}
writeEcho(inst, inst->buffer, inst->inputCount);
navigateHistoryCmd(inst, 1);
inst->dirty = false;
}
static void resetHistoryBuffer(shellmatta_instance_t *inst)
{
inst->historyRead = inst->historyEnd;
inst->historyReadUp = true;
}
static void saveCursorPos(shellmatta_instance_t *inst)
{
writeEcho(inst, "\e[s", 3u);
}
static void restoreCursorPos(shellmatta_instance_t *inst)
{
writeEcho(inst, "\e[u", 3u);
}
static void eraseLine(shellmatta_instance_t *inst)
{
writeEcho(inst, "\e[K", 3u);
}
static void rewindCursor(shellmatta_instance_t *inst, uint32_t length)
{
uint8_t terminalCmd[16];
size_t size;
length = SHELLMATTA_MIN (length, inst->cursor);
if(length > 0u)
{
size = snprintf(terminalCmd, sizeof(terminalCmd), "\e[%uD", length);
writeEcho(inst, terminalCmd, size);
inst->cursor -= length;
}
}
static void forwardCursor(shellmatta_instance_t *inst, uint32_t length)
{
uint8_t terminalCmd[16];
size_t size;
length = SHELLMATTA_MAX (length,
(inst->inputCount - inst->cursor));
if (length > 0u)
{
size = snprintf(terminalCmd, sizeof(terminalCmd), "\e[%uC", length);
writeEcho(inst, terminalCmd, size);
inst->cursor -= length;
}
}
static void insertChars(shellmatta_instance_t *inst,
uint8_t *data,
uint32_t length)
{
/* check if we have to move chars in the buffer */
if( (inst->cursor != inst->inputCount)
&& (SHELLMATTA_MODE_INSERT == inst->mode))
{
/* move the existing chars */
for ( uint32_t i = inst->inputCount;
i > inst->cursor;
i --)
{
inst->buffer[i + length - 1] = inst->buffer[i - 1];
}
/* store and print the new chars */
memcpy(&(inst->buffer[inst->cursor]), data, length);
writeEcho(inst, data, length);
/* print the other chars and restore the cursor to this position */
eraseLine(inst);
saveCursorPos(inst);
writeEcho( inst,
&(inst->buffer[inst->cursor + length]),
inst->inputCount - inst->cursor);
restoreCursorPos(inst);
}
/* just overwrite/append the chars */
else
{
memcpy(&(inst->buffer[inst->cursor]), data, length);
writeEcho(inst, data, length);
}
inst->inputCount += length;
inst->cursor += length;
}
static void removeChars(shellmatta_instance_t *inst,
uint32_t length,
bool backspace)
{
length = SHELLMATTA_MIN (length, inst->cursor);
if(0u != length)
{
if(true == backspace)
{
rewindCursor(inst, length);
}
/* delete the char at the cursor position */
for ( uint32_t i = inst->cursor;
i < (inst->inputCount - length);
i++)
{
inst->buffer[i] = inst->buffer[i + length];
}
eraseLine(inst);
saveCursorPos(inst);
writeEcho( inst,
&(inst->buffer[inst->cursor]),
(inst->inputCount - inst->cursor - length));
restoreCursorPos(inst);
inst->inputCount -= length;
}
}
static void clearInput(shellmatta_instance_t *inst)
{
rewindCursor(inst, inst->cursor);
eraseLine(inst);
inst->inputCount = 0u;
inst->dirty = false;
}
static shellmatta_retCode_t processArrowKeys(shellmatta_instance_t *inst)
{
shellmatta_retCode_t ret = SHELLMATTA_USE_FAULT;
if ('[' == inst->escapeChars[0])
{
ret = SHELLMATTA_OK;
switch (inst->escapeChars[1])
{
case 'A': /* arrow up */
storeHistoryCmd(inst);
if(false == inst->historyReadUp)
{
navigateHistoryCmd(inst, -1);
}
inst->historyReadUp = true;
clearInput(inst);
restoreHistoryCmd(inst);
navigateHistoryCmd(inst, -1);
break;
case 'B': /* arrow down */
if((inst->historyRead != inst->historyEnd))
{
storeHistoryCmd(inst);
if(true == inst->historyReadUp)
{
navigateHistoryCmd(inst, 1);
}
inst->historyReadUp = false;
navigateHistoryCmd(inst, 1);
clearInput(inst);
restoreHistoryCmd(inst);
}
break;
case 'C': /* arrow right */
forwardCursor(inst, 1u);
break;
case 'D': /* arrow left */
rewindCursor(inst, 1u);
break;
default:
/** ignore unknown escape */
ret = SHELLMATTA_USE_FAULT;
break;
}
}
return ret;
}
void handleEscapeSequence(shellmatta_instance_t *inst, uint8_t *data)
{
switch (inst->escapeCounter)
{
case 1u:
inst->escapeChars[inst->escapeCounter - 1] = *data;
inst->escapeCounter ++;
break;
case 2u:
inst->escapeChars[inst->escapeCounter - 1] = *data;
if(SHELLMATTA_OK == processArrowKeys(inst))
{
inst->escapeCounter = 0u;
}
else if ( (0x4fu == inst->escapeChars[0])
&& (0x46u == inst->escapeChars[1]))
{
forwardCursor(inst, inst->inputCount - inst->cursor);
inst->escapeCounter = 0u;
}
else if(0u == (0x40u & *data))
{
inst->escapeCounter ++;
}
else
{
inst->escapeCounter = 0u;
}
break;
case 3u:
inst->escapeChars[inst->escapeCounter - 1] = *data;
if( (0x5bu == inst->escapeChars[0])
&& (0x33u == inst->escapeChars[1])
&& (0x7eu == inst->escapeChars[2]))
{
removeChars(inst, 1u, false);
inst->escapeCounter = 0u;
}
/* pos1 */
else if ( (0x5bu == inst->escapeChars[0])
&& (0x31u == inst->escapeChars[1])
&& (0x7eu == inst->escapeChars[2]))
{
rewindCursor(inst, inst->cursor);
inst->escapeCounter = 0u;
}
else if(0u == (0x40u & *data))
{
inst->escapeCounter ++;
}
else
{
inst->escapeCounter = 0u;
}
break;
default:
inst->escapeCounter = 0u;
break;
}
}
static void terminateInput(shellmatta_instance_t *inst)
{
inst->inputCount = 0u;
inst->cursor = 0u;
shellmatta_printf(inst, "\n\r%s", inst->prompt);
}
static void doAutocomplete(shellmatta_instance_t *inst)
{
shellmatta_cmd_t *cmd = inst->cmdList;
uint8_t *tempCmd = NULL;
uint32_t minLen = 0u;
uint32_t sizeDiff = 0u;
bool exactMatch = true;
uint32_t printedLen = 0u;
inst->tabCounter++;
/* on douple tab show all matching commands */
if (1u < inst->tabCounter)
{
inst->tabCounter = 0u;
while (NULL != cmd)
{
/* check if command matches the input */
if( (strlen(cmd->cmd) > inst->cursor)
&& (0u == memcmp(cmd->cmd, inst->buffer, inst->cursor)))
{
/* add newline on first find */
if(0u == printedLen)
{
saveCursorPos(inst);
inst->write("\n\r", 2u);
}
inst->write(cmd->cmd, strlen(cmd->cmd));
printedLen += strlen(cmd->cmd);
inst->write(" ", 4u);
printedLen += 4u;
}
/* check if command matches the input */
if( (strlen(cmd->cmdAlias) > inst->cursor)
&& (0u == memcmp(cmd->cmdAlias, inst->buffer, inst->cursor)))
{
/* add newline on first find */
if(0u == printedLen)
{
saveCursorPos(inst);
inst->write("\n\r", 2u);
}
inst->write(cmd->cmdAlias, strlen(cmd->cmdAlias));
printedLen += strlen(cmd->cmdAlias);
inst->write(" ", 4u);
printedLen += 4u;
}
cmd = cmd->next;
}
/* print input again if a commands was found */
if(printedLen > 0u)
{
writeEcho(inst, "\n\r", 2u);
writeEcho(inst, inst->prompt, strlen(inst->prompt));
writeEcho(inst, inst->buffer, inst->inputCount);
restoreCursorPos(inst);
}
}
/* on single tab autocomplete as far as possible */
else if(0u != inst->cursor)
{
/* loop through all registered commands */
while (NULL != cmd)
{
/* check if command matches the input */
if( (strlen(cmd->cmd) > inst->cursor)
&& (0u == memcmp(cmd->cmd, inst->buffer, inst->cursor)))
{
/* store first match */
if(NULL == tempCmd)
{
tempCmd = cmd->cmd;
minLen = strlen(cmd->cmd);
}
/* find common part of the matches */
else
{
exactMatch = false;
minLen = SHELLMATTA_MIN(strlen(cmd->cmd), minLen);
for(uint32_t i = 0u; i < minLen; i++)
{
if(cmd->cmd[i] != tempCmd[i])
{
minLen = i;
}
}
}
}
/* check if command Alias matches the input */
if( (strlen(cmd->cmdAlias) > inst->cursor)
&& (0u == memcmp(cmd->cmdAlias, inst->buffer, inst->cursor)))
{
/* store first match */
if(NULL == tempCmd)
{
tempCmd = cmd->cmdAlias;
minLen = strlen(cmd->cmdAlias);
}
/* find common part of the matches */
else
{
exactMatch = false;
minLen = SHELLMATTA_MIN(strlen(cmd->cmdAlias), minLen);
for(uint32_t i = 0u; i < minLen; i++)
{
if(cmd->cmdAlias[i] != tempCmd[i])
{
minLen = i;
}
}
}
}
cmd = cmd->next;
}
/* autocomplete found command */
if(NULL != tempCmd)
{
/* calculate the size of the command to be inserted */
sizeDiff = minLen - inst->cursor;
/* copy the found part into the buffer and display it */
insertChars(inst, &(tempCmd[inst->cursor]), sizeDiff);
/* on exact match there is no need to double Tab to display all */
if(true == exactMatch)
{
inst->tabCounter = 0u;
}
}
}
else
{
/* nothing to do here */
}
}
/** /**
* @brief initialize the shellmatta terminal and provide all callbacks * @brief initialize the shellmatta terminal and provide all callbacks
@ -47,43 +601,97 @@
* NULL in case of no history buffer * NULL in case of no history buffer
* @param[in] historyBufferSize size of the history buffer * @param[in] historyBufferSize size of the history buffer
* 0 in case of no history buffer * 0 in case of no history buffer
* @param[in] prompt pointer to prompt string - is printed
* after each command
* @param[in] writeFct function pointer to output function
*/ */
void shellmatta_doInit( shellmatta_retCode_t shellmatta_doInit(
shellmatta_instance_t *inst, shellmatta_instance_t *inst,
uint8_t *buffer, uint8_t *buffer,
uint32_t bufferSize, uint32_t bufferSize,
uint8_t *historyBuffer, uint8_t *historyBuffer,
uint32_t historyBufferSize) uint32_t historyBufferSize,
const char *prompt,
shellmatta_write_t writeFct)
{ {
/** - copy all provided buffers into the shellmatta instance */ /** - copy all provided buffers into the shellmatta instance */
inst->buffer = buffer; inst->buffer = buffer;
inst->bufferSize = bufferSize; inst->bufferSize = bufferSize;
inst->bufferReadPointer = 0u; inst->inputCount = 0u;
inst->bufferWritePointer = 0u; inst->cursor = 0u;
inst->cmdList = NULL; inst->cmdList = NULL;
inst->historyBuffer = historyBuffer; inst->historyBuffer = historyBuffer;
inst->historyBufferSize = historyBufferSize; inst->historyBufferSize = historyBufferSize;
inst->historyStart = 0u;
inst->historyEnd = 0u;
inst->historyRead = 0u;
inst->historyReadUp = true;
inst->write = writeFct;
inst->prompt = prompt;
inst->echoEnabled = true;
inst->dirty = false;
inst->tabCounter = 0u;
inst->escapeCounter = 0u;
inst->mode = SHELLMATTA_MODE_INSERT;
terminateInput(inst);
return SHELLMATTA_OK;
} }
/**
void shellmatta_addCmd(shellmatta_instance_t *inst, shellmatta_cmd_t *cmd) * @brief adds a command to the command list alphabetically ordered
* @param[in] inst pointer to a shellmatta instance
* @param[in] cmd pointer to the command to add type #shellmatta_cmd_t
*/
shellmatta_retCode_t shellmatta_addCmd(shellmatta_instance_t *inst, shellmatta_cmd_t *cmd)
{ {
shellmatta_cmd_t *tempCmd = inst->cmdList; shellmatta_cmd_t *tempCmd = inst->cmdList;
shellmatta_cmd_t **prevCmd = &inst->cmdList;
bool cmdPlaced = false;
shellmatta_retCode_t ret = SHELLMATTA_OK;
int cmdDiff = 0;
int aliasDiff = 0;
/* register first command as list entry */
if (NULL == tempCmd) if (NULL == tempCmd)
{ {
inst->cmdList = cmd; inst->cmdList = cmd;
cmd->next = NULL; cmd->next = NULL;
} }
/* append the new command sorted */
else else
{ {
while (tempCmd->next != NULL) while ((false == cmdPlaced) && (SHELLMATTA_OK == ret))
{ {
cmdDiff = strcmp(tempCmd->cmd, cmd->cmd);
aliasDiff = strcmp(tempCmd->cmdAlias, cmd->cmdAlias);
/* check for a duplicate command */
if((0u == cmdDiff) || (0u == aliasDiff))
{
ret = SHELLMATTA_DUPLICATE;
}
else if(0 < cmdDiff)
{
cmd->next = tempCmd;
*prevCmd = cmd;
cmdPlaced = true;
}
else if(NULL == tempCmd->next)
{
tempCmd->next = cmd;
cmd->next = NULL;
cmdPlaced = true;
}
else
{
/* nothing to do */
}
prevCmd = &tempCmd;
tempCmd = tempCmd->next; tempCmd = tempCmd->next;
} }
tempCmd->next = cmd;
cmd->next = NULL;
} }
return ret;
} }
@ -92,51 +700,120 @@ void shellmatta_doTask(shellmatta_instance_t *inst, uint32_t time)
} }
void shellmatta_processData(shellmatta_instance_t *inst, char *data, /**
uint32_t size) * @brief processes the passed amount of data
* @param[in] inst pointer to a shellmatta instance
* @param[in] data pointer to input data to process
* @param[in] size length of input data to process
*/
void shellmatta_processData(shellmatta_instance_t *inst,
char *data,
uint32_t size)
{ {
printf("%c", *data); /* process byte wise */
for (uint32_t i = 0u; i < size; i++)
if (0x0A == *data)
{ {
shellmatta_cmd_t *cmd = inst->cmdList; /* handle escape sequences */
uint8_t cmdExecuted = 0u; if(inst->escapeCounter != 0u)
inst->buffer[inst->bufferWritePointer] = 0u;
while (NULL != cmd)
{ {
if (0 == strcmp(inst->buffer, cmd->cmd)) handleEscapeSequence(inst, data);
}
/* handle return as start of processing the command */
else if ('\r' == *data)
{
shellmatta_cmd_t *cmd = inst->cmdList;
uint8_t cmdExecuted = 0u;
inst->buffer[inst->inputCount] = 0u;
/* store the current command and reset the history buffer */
inst->dirty = true;
storeHistoryCmd(inst);
resetHistoryBuffer(inst);
while (NULL != cmd)
{ {
cmdExecuted = 1u; if ( (0 == strcmp(inst->buffer, cmd->cmd))
char *blubb[10]; || (0 == strcmp(inst->buffer, cmd->cmdAlias)))
blubb[0] = inst->buffer; {
cmd->cmdFct(1, blubb); inst->write("\n\r", 2u);
cmd = NULL;
cmdExecuted = 1u;
char *blubb[10];
blubb[0] = inst->buffer;
cmd->cmdFct(1, blubb);
cmd = NULL;
}
else
{
cmd = cmd->next;
}
} }
else
if ((cmdExecuted == 0u) && (inst->inputCount > 0))
{ {
cmd = cmd->next; inst->buffer[inst->inputCount] = '\0';
shellmatta_printf( inst,
"\n\rCommand: %s not found",
inst->buffer);
} }
terminateInput(inst);
}
/* tabulator key - auto complete */
else if('\t' == *data)
{
inst->dirty = true;
doAutocomplete(inst);
}
/* cancel - terminate current input and print prompt again */
else if(3 == *data)
{
inst->dirty = false;
resetHistoryBuffer(inst);
terminateInput(inst);
}
/* backspace */
else if('\b' == *data)
{
inst->dirty = true;
removeChars(inst, 1u, true);
}
/* check for delete key */
else if(0x7eu == *data)
{
inst->dirty = true;
removeChars(inst, 1u, false);
}
/* start of escape sequence */
else if('\e' == *data)
{
inst->escapeCounter = 1u;
}
else
{
inst->dirty = true;
insertChars(inst, data, 1);
} }
if (cmdExecuted == 0u) /* reset tab counter on not a tab */
if ('\t' != *data)
{ {
printf("failed to find command"); inst->tabCounter = 0u;
} }
inst->bufferWritePointer = 0u; data ++;
}
else
{
inst->buffer[inst->bufferWritePointer] = *data;
inst->bufferWritePointer++;
} }
} }
void shellmatta_printf(shellmatta_instance_t *inst, const char *fmt, ...) void shellmatta_printf(shellmatta_instance_t *inst, const char *fmt, ...)
{ {
/*TODO dummy implementation, shall be replaced by a generic output mechanism */ char outputBuffer[1024u];
printf(fmt); va_list arg;
va_start(arg, fmt);
int length = vsnprintf(outputBuffer, 1024, fmt, arg);
va_end(arg);
inst->write(outputBuffer, length);
} }
void shellmatta_getArg(uint32_t cnt, uint8_t *arg) void shellmatta_getArg(uint32_t cnt, uint8_t *arg)