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fix #44 add busy mode

This commit is contained in:
prozessorkern 2020-03-28 12:12:56 +01:00
parent 3b99ad2a56 96cf0c8d65
commit 785d73306d
9 changed files with 316 additions and 90 deletions
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2
.vscode/launch.json vendored
View File

@ -9,7 +9,7 @@
"type": "cppdbg",
"request": "launch",
"program": "${workspaceFolder}/output/example/example",
"args": ["/dev/pts/3"],
"args": ["/dev/pts/4"],
"stopAtEntry": false,
"cwd": "${workspaceFolder}",
"environment": [],

9
api/shellmatta.h
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@ -39,7 +39,8 @@ typedef enum
SHELLMATTA_ERROR , /**< error occured */
SHELLMATTA_CONTINUE , /**< the function is not over */
SHELLMATTA_USE_FAULT , /**< parameter error - wrong usage */
SHELLMATTA_DUPLICATE /**< duplicate command */
SHELLMATTA_DUPLICATE , /**< duplicate command */
SHELLMATTA_BUSY /**< command is busy keep calling */
} shellmatta_retCode_t;
/**
@ -121,6 +122,7 @@ typedef struct
char *buffer; /**< input buffer */
uint32_t bufferSize; /**< size of the input buffer */
uint32_t inputCount; /**< offset of the current write operation */
uint32_t byteCounter; /**< counter used to loop over input data */
uint32_t lastNewlineIdx; /**< index of the lest newline */
uint32_t cursor; /**< offset where the cursor is at */
uint32_t stdinIdx; /**< start index of stdin in buffer */
@ -146,6 +148,7 @@ typedef struct
shellmatta_cmd_t helpCmd; /**< help command structure */
shellmatta_cmd_t *cmdList; /**< pointer to the first command */
shellmatta_cmd_t *continuousCmd; /**< command to be called continuously */
shellmatta_cmd_t *busyCmd; /**< command to be polled (busy mode) */
bool cmdListIsConst; /**< true if the #cmdList was passed during
initialization */
shellmatta_opt_t optionParser; /**< option parser sructure */
@ -189,13 +192,13 @@ shellmatta_retCode_t shellmatta_read( shellmatta_handle_t handle,
uint32_t *length);
shellmatta_retCode_t shellmatta_opt( shellmatta_handle_t handle,
char *optionString,
const char *optionString,
char *option,
char **argument,
uint32_t *argLen);
shellmatta_retCode_t shellmatta_opt_long( shellmatta_handle_t handle,
shellmatta_opt_long_t *longOptions,
const shellmatta_opt_long_t *longOptions,
char *option,
char **argument,
uint32_t *argLen);

104
example/main.c
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@ -1,19 +1,23 @@
/*
* main.c
* Copyright (c) 2019 Stefan Strobel <stefan.strobel@shimatta.net>
*
* Created on: Jun 10, 2019
* Author: stefan
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
/**
* @file main.c
* @brief main module to demonstrate use of the shellmatta.
* @author Stefan Strobel <stefan.strobel@shimatta.net>
*/
#include "shellmatta.h"
#include <stdint.h>
#include <stdio.h>
#include <ncurses.h>
#include <stdbool.h>
#include <fcntl.h>
#include <unistd.h>
#include <termios.h>
#include <string.h>
#include <errno.h>
@ -22,24 +26,6 @@ static bool exitRequest = false;
int f;
shellmatta_handle_t handle;
void set_blocking (int fd, int should_block)
{
struct termios tty;
memset (&tty, 0, sizeof tty);
if (tcgetattr (fd, &tty) != 0)
{
printf ("error %d from tggetattr", errno);
return;
}
tty.c_cc[VMIN] = should_block ? 1 : 0;
tty.c_cc[VTIME] = 5; // 0.5 seconds read timeout
if (tcsetattr (fd, TCSANOW, &tty) != 0)
printf ("error %d setting term attributes", errno);
}
static shellmatta_retCode_t doSomething(shellmatta_handle_t handle, const char *arguments, uint32_t length)
{
shellmatta_printf(handle, "%s - length: %u", arguments, length);
@ -101,23 +87,47 @@ shellmatta_cmd_t emptyCommand = {"empty", NULL, NULL, NULL, empty, NULL};
static shellmatta_retCode_t reset(shellmatta_handle_t handle, const char *arguments, uint32_t length)
{
shellmatta_retCode_t ret;
(void)arguments;
(void)length;
char option;
char *argument;
uint32_t argLen;
bool printPrompt = false;
if(0 == strncmp(arguments, "prompt", length))
static const shellmatta_opt_long_t options[] =
{
shellmatta_resetShell(handle, true);
{"prompt", 'p', SHELLMATTA_OPT_ARG_REQUIRED},
{NULL, '\0', SHELLMATTA_OPT_ARG_NONE}
};
ret = shellmatta_opt_long(handle, options, &option, &argument, &argLen);
while(SHELLMATTA_OK == ret)
{
switch(option)
{
case 'p':
if(NULL != argument)
{
if(0 == strncmp("true", argument, 4u))
{
printPrompt = true;
}
else
{
shellmatta_resetShell(handle, false);
}
break;
default:
shellmatta_printf(handle, "Unknown option: %c\r\n", option);
break;
}
ret = shellmatta_opt_long(handle, options, &option, &argument, &argLen);
}
shellmatta_resetShell(handle, printPrompt);
shellmatta_configure(handle, SHELLMATTA_MODE_INSERT, true, '\r');
return SHELLMATTA_OK;
}
shellmatta_cmd_t resetCommand = {"reset", NULL, "resets the shellmatta instance", "reset [prompt]", reset, NULL};
shellmatta_cmd_t resetCommand = {"reset", NULL, "resets the shellmatta instance", "reset [--prompt true/false]", reset, NULL};
static shellmatta_retCode_t continuous(shellmatta_handle_t handle, const char *arguments, uint32_t length)
{
@ -143,6 +153,28 @@ static shellmatta_retCode_t continuous(shellmatta_handle_t handle, const char *a
}
shellmatta_cmd_t continuousCommand = {"continuous", "cont", "prints continously all input bytes", "continuous", continuous, NULL};
static shellmatta_retCode_t busy(shellmatta_handle_t handle, const char *arguments, uint32_t length)
{
(void)arguments;
(void)length;
static uint32_t callCnt = 0u;
shellmatta_retCode_t ret = SHELLMATTA_BUSY;
if(callCnt < 10u)
{
callCnt ++;
shellmatta_printf(handle, "%s - length %u - callCnt %u\r\n", arguments, length, callCnt);
}
else
{
callCnt = 0u;
ret = SHELLMATTA_OK;
}
return ret;
}
shellmatta_cmd_t busyCommand = {"busy", NULL, NULL, NULL, busy, NULL};
shellmatta_retCode_t writeFct(const char* data, uint32_t length)
{
@ -171,8 +203,6 @@ int main(int argc, char **argv)
return f;
}
set_blocking (f, 1);
shellmatta_doInit( &instance,
&handle,
buffer,
@ -189,18 +219,26 @@ int main(int argc, char **argv)
shellmatta_addCmd(handle, &emptyCommand);
shellmatta_addCmd(handle, &resetCommand);
shellmatta_addCmd(handle, &continuousCommand);
shellmatta_addCmd(handle, &busyCommand);
while(exitRequest == false)
{
char c;
shellmatta_retCode_t ret;
int res = 0;
res = read (f, &c, 1);
fprintf(stdout, "0x%02x \n", c);
fflush(stdout);
shellmatta_processData(handle, &c, res);
do
{
ret = shellmatta_processData(handle, &c, res);
if(SHELLMATTA_BUSY == ret)
{
sleep(1);
}
} while(SHELLMATTA_BUSY == ret);
}
close(f);

3
makefile
View File

@ -41,7 +41,8 @@ UNITTEST_SOURCES := test/unittest/test_main.cpp
INTEGRATIONTEST_SOURCES := test/integrationtest/test_main.cpp \
test/integrationtest/test_integration.cpp \
test/integrationtest/test_integration_opt.cpp \
test/integrationtest/test_integration_optLong.cpp
test/integrationtest/test_integration_optLong.cpp \
test/integrationtest/test_integration_busy.cpp
UNITTEST_CPPOBJ := $(patsubst %.cpp,$(OBJ_DIR)%.o,$(UNITTEST_SOURCES))

105
src/shellmatta.c
View File

@ -75,6 +75,7 @@ shellmatta_retCode_t shellmatta_doInit(
inst->buffer = buffer;
inst->bufferSize = bufferSize;
inst->inputCount = 0u;
inst->byteCounter = 0u;
inst->lastNewlineIdx = 0u;
inst->cursor = 0u;
inst->stdinIdx = 0u;
@ -98,6 +99,7 @@ shellmatta_retCode_t shellmatta_doInit(
inst->mode = SHELLMATTA_MODE_INSERT;
inst->cmdList = &(inst->helpCmd);
inst->continuousCmd = NULL;
inst->busyCmd = NULL;
inst->cmdListIsConst = false;
/** -# copy the help command structure to this instance */
@ -139,7 +141,9 @@ shellmatta_retCode_t shellmatta_resetShell( shellmatta_handle_t handle, bool pri
&& (SHELLMATTA_MAGIC == inst->magic))
{
inst->inputCount = 0u;
inst->byteCounter = 0u;
inst->continuousCmd = NULL;
inst->busyCmd = NULL;
inst->lastNewlineIdx = 0u;
inst->cursor = 0u;
inst->stdinIdx = 0u;
@ -368,7 +372,6 @@ shellmatta_retCode_t shellmatta_processData(shellmatta_handle_t handle,
uint8_t cmdExecuted = 0u;
uint32_t cmdLen;
char *tempString;
uint32_t byteCounter;
shellmatta_retCode_t ret = SHELLMATTA_OK;
shellmatta_retCode_t cmdRet;
@ -378,19 +381,53 @@ shellmatta_retCode_t shellmatta_processData(shellmatta_handle_t handle,
if( (NULL != inst)
&& (SHELLMATTA_MAGIC == inst->magic))
{
/** -# in busy mode - keep calling this command */
if(NULL != inst->busyCmd)
{
/** -# just call the function until it is not busy anymore */
cmdRet = inst->busyCmd->cmdFct(handle, inst->buffer, inst->inputCount);
if(SHELLMATTA_BUSY != cmdRet)
{
utils_terminateInput(inst);
}
else if(SHELLMATTA_CONTINUE == cmdRet)
{
inst->continuousCmd = inst->busyCmd;
inst->busyCmd = NULL;
}
else
{
ret = cmdRet;
}
}
/** -# process byte wise */
for (byteCounter = 0u; byteCounter < size; byteCounter++)
for (; (inst->byteCounter < size) && (NULL == inst->busyCmd); inst->byteCounter++)
{
/** -# in continuous mode - pass data directly to the command */
if(NULL != inst->continuousCmd)
{
/** -# copy data and call command function */
inst->buffer[inst->stdinIdx] = data[byteCounter];
inst->buffer[inst->stdinIdx] = data[inst->byteCounter];
inst->stdinLength = 1u;
cmdRet = inst->continuousCmd->cmdFct(inst, inst->buffer, inst->inputCount);
cmdRet = inst->continuousCmd->cmdFct(handle, inst->buffer, inst->inputCount);
/** -# check if continuous mode is canceled */
if(('\x03' == data[byteCounter]) || (SHELLMATTA_CONTINUE != cmdRet))
/** -# check if continuous mode is canceled or interrupted by busy mode */
if(SHELLMATTA_BUSY == cmdRet)
{
inst->busyCmd = inst->busyCmd;
inst->continuousCmd = NULL;
}
else if(('\x03' == data[inst->byteCounter]))
{
utils_terminateInput(inst);
}
else if(SHELLMATTA_CONTINUE == cmdRet)
{
/** -# do nothing - continue */
}
else
{
utils_terminateInput(inst);
}
@ -398,10 +435,10 @@ shellmatta_retCode_t shellmatta_processData(shellmatta_handle_t handle,
/** -# handle escape sequences */
else if(inst->escapeCounter != 0u)
{
escape_handleSequence(inst, *data);
escape_handleSequence(inst, data[inst->byteCounter]);
}
/** -# handle delimiter as start of processing the command */
else if (inst->delimiter == *data)
else if (inst->delimiter == data[inst->byteCounter])
{
if(0u == inst->hereLength)
{
@ -434,7 +471,7 @@ shellmatta_retCode_t shellmatta_processData(shellmatta_handle_t handle,
inst->hereLength = inst->inputCount - inst->hereDelimiterIdx;
inst->dirty = true;
utils_insertChars(inst, data, 1);
utils_insertChars(inst, &data[inst->byteCounter], 1u);
inst->lastNewlineIdx = inst->inputCount;
}
else
@ -505,9 +542,9 @@ shellmatta_retCode_t shellmatta_processData(shellmatta_handle_t handle,
}
else
{
/** -# the party goes on - print the \r and add a \n to satisfy most terminals */
/** -# the party goes on - just print the delimiter and store the position */
inst->lastNewlineIdx = inst->inputCount;
utils_insertChars(inst, data, 1u);
utils_insertChars(inst, &data[inst->byteCounter], 1u);
}
}
@ -543,14 +580,25 @@ shellmatta_retCode_t shellmatta_processData(shellmatta_handle_t handle,
utils_writeEcho(inst, "\r\n", 2u);
shellmatta_opt_init(inst, cmdLen + 1u);
cmdExecuted = 1u;
cmdRet = cmd->cmdFct(inst, inst->buffer, inst->inputCount);
if(SHELLMATTA_CONTINUE == cmdRet)
{
inst->continuousCmd = cmd;
cmdRet = cmd->cmdFct(handle, inst->buffer, inst->inputCount);
/** -# initialize stdin buffer */
switch(cmdRet)
{
case SHELLMATTA_CONTINUE:
/** -# initialize stdin buffer and continuous cmd */
inst->stdinIdx = inst->inputCount + 1u;
inst->stdinLength = 0u;
inst->continuousCmd = cmd;
break;
case SHELLMATTA_BUSY:
inst->busyCmd = cmd;
ret = cmdRet;
break;
default:
/* nothing to do - everything ok */
break;
}
cmd = NULL;
}
@ -568,7 +616,8 @@ shellmatta_retCode_t shellmatta_processData(shellmatta_handle_t handle,
}
/** -# terminate this session if no continuous mode is requested */
if(NULL == inst->continuousCmd)
if( (NULL == inst->continuousCmd)
&& (NULL == inst->busyCmd))
{
utils_terminateInput(inst);
}
@ -576,49 +625,53 @@ shellmatta_retCode_t shellmatta_processData(shellmatta_handle_t handle,
}
/** -# ignore newline as first character (to be compatible to
* terminals sending newline after return */
else if((0u == inst->inputCount) && ('\n' == *data))
else if((0u == inst->inputCount) && ('\n' == data[inst->byteCounter]))
{
/* do nothing */
}
/** -# check for tabulator key - auto complete */
else if('\t' == *data)
else if('\t' == data[inst->byteCounter])
{
inst->dirty = true;
autocomplete_run(inst);
}
/** -# check for cancel -
* terminate current input and print prompt again */
else if('\x03' == *data)
else if('\x03' == data[inst->byteCounter])
{
inst->dirty = false;
history_reset(inst);
utils_terminateInput(inst);
}
/** -# check for backspace */
else if( ('\b' == *data)
|| ('\x7f' == *data))
else if( ('\b' == data[inst->byteCounter])
|| ('\x7f' == data[inst->byteCounter]))
{
inst->dirty = true;
utils_removeChars(inst, 1u, true);
}
/** -# check for start of escape sequence */
else if('\x1b' == *data)
else if('\x1b' == data[inst->byteCounter])
{
inst->escapeCounter = 1u;
}
else
{
inst->dirty = true;
utils_insertChars(inst, data, 1);
utils_insertChars(inst, &data[inst->byteCounter], 1u);
}
/** -# reset tab counter on not a tab */
if ('\t' != *data)
if ('\t' != data[inst->byteCounter])
{
inst->tabCounter = 0u;
}
}
data ++;
/*! -# initialize the byte buffer if processing of the input is finished */
if(ret != SHELLMATTA_BUSY)
{
inst->byteCounter = 0u;
}
}
else

12
src/shellmatta_opt.c
View File

@ -124,7 +124,7 @@ static char peekNextHunk(shellmatta_instance_t *inst)
* #SHELLMATTA_ERROR - format error or option unknown
*/
static shellmatta_retCode_t parseShortOpt( shellmatta_instance_t *inst,
char *optionString,
const char *optionString,
char *option,
shellmatta_opt_argtype_t *argtype)
{
@ -186,7 +186,7 @@ static shellmatta_retCode_t parseShortOpt( shellmatta_instance_t *inst,
* #SHELLMATTA_ERROR - format error or option unknown
*/
static shellmatta_retCode_t parseLongOpt( shellmatta_instance_t *inst,
shellmatta_opt_long_t *longOptions,
const shellmatta_opt_long_t *longOptions,
char *option,
shellmatta_opt_argtype_t *argtype)
{
@ -254,8 +254,8 @@ static shellmatta_retCode_t parseLongOpt( shellmatta_instance_t *inst,
* #SHELLMATTA_ERROR - error occured - e.g. argument missing
*/
static shellmatta_retCode_t shellmatta_opt_int( shellmatta_handle_t handle,
char *optionString,
shellmatta_opt_long_t *longOptions,
const char *optionString,
const shellmatta_opt_long_t *longOptions,
char *option,
char **argument,
uint32_t *argLen)
@ -370,7 +370,7 @@ static shellmatta_retCode_t shellmatta_opt_int( shellmatta_handle_t handle,
* #SHELLMATTA_ERROR - error occured - e.g. argument missing
*/
shellmatta_retCode_t shellmatta_opt( shellmatta_handle_t handle,
char *optionString,
const char *optionString,
char *option,
char **argument,
uint32_t *argLen)
@ -392,7 +392,7 @@ shellmatta_retCode_t shellmatta_opt( shellmatta_handle_t handle,
* @param[out] argLen pointer to store the argument lengh to (can be NULL)
*/
shellmatta_retCode_t shellmatta_opt_long( shellmatta_handle_t handle,
shellmatta_opt_long_t *longOptions,
const shellmatta_opt_long_t *longOptions,
char *option,
char **argument,
uint32_t *argLen)

4
src/shellmatta_opt.h
View File

@ -23,13 +23,13 @@
#include <stdint.h>
shellmatta_retCode_t shellmatta_opt( shellmatta_handle_t handle,
char *optionString,
const char *optionString,
char *option,
char **argument,
uint32_t *argLen);
shellmatta_retCode_t shellmatta_opt_long( shellmatta_handle_t handle,
shellmatta_opt_long_t *longOptions,
const shellmatta_opt_long_t *longOptions,
char *option,
char **argument,
uint32_t *argLen);

1
src/shellmatta_utils.c
View File

@ -367,6 +367,7 @@ void utils_terminateInput(shellmatta_instance_t *inst)
inst->stdinIdx = 0u;
inst->stdinLength = 0u;
inst->continuousCmd = NULL;
inst->busyCmd = NULL;
inst->write("\r\n", 2u);
inst->write(inst->prompt, strlen(inst->prompt));
}

130
test/integrationtest/test_integration_busy.cpp Normal file
View File

@ -0,0 +1,130 @@
/*
* Copyright (c) 2019 Stefan Strobel <stefan.strobel@shimatta.net>
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
/**
* @file test_integration_busy.cpp
* @brief integration test implementation for the cmd busy function
* @author Stefan Strobel <stefan.strobel@shimatta.net>
*/
#include "test/framework/catch.hpp"
extern "C" {
#include "shellmatta.h"
}
#include <string.h>
static uint32_t write_callCnt = 0u;
static char write_data[1024];
static uint32_t write_length;
static uint32_t busyCallCnt;
static uint32_t notBusyCallCnt;
static shellmatta_retCode_t writeFct(const char* data, uint32_t length)
{
write_callCnt ++;
while((length > 0) && (write_length < sizeof(write_data)))
{
write_data[write_length] = *data;
data ++;
length --;
write_length ++;
}
return SHELLMATTA_OK;
}
static shellmatta_retCode_t busyCmdFct(shellmatta_handle_t handle, const char *arguments, uint32_t length)
{
(void) handle;
(void) arguments;
(void) length;
shellmatta_retCode_t ret = SHELLMATTA_BUSY;
static const char *callArgs = NULL;
static uint32_t callLength = 0u;;
if(busyCallCnt < 10u)
{
if(NULL == callArgs)
{
callArgs = arguments;
callLength = length;
}
else
{
CHECK(callArgs == arguments);
CHECK(callLength == length);
}
busyCallCnt ++;
}
else
{
ret = SHELLMATTA_OK;
}
return ret;
}
shellmatta_cmd_t busyCmd = {(char*)"busy", (char*)"b", NULL, NULL, busyCmdFct, NULL};
static shellmatta_retCode_t notBusyCmdFct(shellmatta_handle_t handle, const char *arguments, uint32_t length)
{
(void) handle;
(void) arguments;
(void) length;
notBusyCallCnt ++;
return SHELLMATTA_OK;
}
shellmatta_cmd_t notBusyCmd = {(char*)"notBusy", (char*)"n", NULL, NULL, notBusyCmdFct, NULL};
TEST_CASE( "shellmatta busy 1" ) {
shellmatta_retCode_t ret;
shellmatta_instance_t inst;
shellmatta_handle_t handle;
char buffer[1024];
char historyBuffer[1024];
char *dummyData = (char*) "busy and some arguments\r\n"
"\r\nshellmatta->notBusy and some arguments\r\n"
"\r\nshellmatta->";
shellmatta_doInit( &inst,
&handle,
buffer,
sizeof(buffer),
historyBuffer,
sizeof(historyBuffer),
"shellmatta->",
NULL,
writeFct);
busyCallCnt = 0u;
notBusyCallCnt = 0u;
write_callCnt = 0u;
memset(write_data, 0, sizeof(write_data));
write_length = 0u;
shellmatta_addCmd(handle, &busyCmd);
shellmatta_addCmd(handle, &notBusyCmd);
do
{
ret = shellmatta_processData(handle, (char*)"busy and some arguments\r"
"notBusy and some arguments\r", 51);
} while (SHELLMATTA_BUSY == ret);
CHECK( 10u == busyCallCnt);
CHECK( 1u == notBusyCallCnt );
CHECK( write_length == strlen(dummyData));
REQUIRE( strcmp(dummyData, write_data) == 0);
}