Resetting the Simulator 3 and 4 Projects here... Git repository got really bad...
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21 changed files with 0 additions and 4310 deletions
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#include "metadataops.h"
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#include "StandardConstants.h"
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#include "StringUtils.h"
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/*
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Name: addNode
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Process: adds metadata node to linked list recursively, handles empty list
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Function Input/Parameters: ptr to head or next linked node (OpCodeType *),
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ptr to new node (OpCodeType *)
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Function Output/Parameters: none
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Function Output/Returned: pointer to previous node, or head node (OpCodeType *)
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Device Input/Device: none
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Device Output/Device: none
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Dependencies: malloc, copyString
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*/
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OpCodeType *addNode(OpCodeType *localPtr, OpCodeType *newNode)
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{
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// initialize function and variables
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// check for local pointer assigned to null
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if(localPtr == NULL)
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{
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// access memory for new link/node
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// fct: malloc
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localPtr = (OpCodeType *) malloc(sizeof(OpCodeType));
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// assign all three values to newly created node
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// assign next pointer to null
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// fct: copyString
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localPtr->pid = newNode->pid;
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copyString(localPtr->command, newNode->command);
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copyString(localPtr->inOutArg, newNode->inOutArg);
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copyString(localPtr->strArg1, newNode->strArg1);
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localPtr->intArg2 = newNode->intArg2;
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localPtr->intArg3 = newNode->intArg3;
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localPtr->opEndTime = newNode->opEndTime;
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localPtr->nextNode = NULL;
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// return current local pointer
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return localPtr;
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}
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// assume end of list not found
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// assign recursive fct to current node's next link
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// fct: addNode
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localPtr->nextNode = addNode(localPtr->nextNode, newNode);
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// return current local ptr
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return localPtr;
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}
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/*
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Name: clearMetaDataList
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Process: recursively traverses list, frees dynamically allocated nodes
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Function Input/Parameters: node opcode (const OpCodeType *)
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Function Output/Parameters: none
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Function Output/Returned: NULL (OpCodeType *)
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Device Input/Device: none
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Device Output/Device: none
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Dependencies: ???
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*/
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OpCodeType *clearMetaDataList(OpCodeType *localPtr)
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{
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// initialize function and variables
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// check for local pointer not set to null (list not empty)
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if(localPtr != NULL)
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{
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// call recursive function with next pointer
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// fct: clearMetaDataList
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clearMetaDataList(localPtr->nextNode);
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// after recursive call, release mem to OS
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// fct: free
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free(localPtr);
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// set given pointer to NULL
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localPtr = NULL;
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}
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// return NULL to calling fct
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return NULL;
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}
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/*
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Name: displayMetaData
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Process: data dump/display of all opcode items
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Function Input/Parameters: pointer to
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head of opcode/metadata list (const OpCodeType *)
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Function Output/Parameters: none
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Function Output/Returned: calculated time (int)
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Device Input/Device: none
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Device Output/Device: none
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Dependencies: printf, compareString
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*/
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void displayMetaData(const OpCodeType *localPtr)
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{
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// initialize function and variables
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// display title, with underline
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// fct: printf
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printf("Metadata File Display\n");
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printf("---------------------\n\n");
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// loop to end of linked list
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while(localPtr != NULL)
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{
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// print leader
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// fct: printf
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printf("Opcode: ");
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// print opcode pid
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// fct: printf
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printf("/pid: %d", localPtr->pid);
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// print opcode command
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// fct: printf
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printf("/cmd: %s", localPtr->command);
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// check for dev op
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if(compareString(localPtr->command, "dev") == 0)
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{
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// print in/out parameter
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// fct: printf
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printf("/io: %s", localPtr->inOutArg);
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}
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// otherwise, assume other than dev
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else
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{
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// print NA
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// fct: printf
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printf("/io: NA");
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}
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// print first string argument
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// fct: printf
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printf("\n\t/arg 1: %s", localPtr->strArg1);
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// print first int argument
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// fct: printf
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printf("/arg 2: %d", localPtr->intArg2);
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// print second int argument
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// fct: printf
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printf("/arg 3: %d", localPtr->intArg3);
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// print op end time
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printf("/op end time: %8.6f", localPtr->opEndTime);
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// endline print
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// fct: printf
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printf("\n\n");
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// assign local pointer to next node
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localPtr = localPtr->nextNode;
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}
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// void function, no return.
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}
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/*
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Name: getCommand
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Process: parses thre letter command part of opcode str
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Function Input/Parameters: input opcode str (const char *),
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starting index (int)
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Function Output/Parameters: parsed command (char *)
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Function Output/Returned: updated starting index for use by calling fct (int)
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Device Input/Device: none
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Device Output/Device: none
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Dependencies: none
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*/
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int getCommand(char *cmd, const char *inputStr, int index)
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{
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// initialize function and variables
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int lengthOfCommand = 3;
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// loop across command length
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while(index < lengthOfCommand)
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{
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// assign character from input string to buffer string
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cmd[index] = inputStr[index];
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// increment index
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index = index + 1;
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// set next character to null character
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cmd[index] = NULL_CHAR;
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}
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// return current index
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return index;
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}
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/*
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Name: getMetaData
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Process: main driver function to upload, parse, and store list
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of op code commands in a linked list
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Function Input/Parameters: file name (const char *)
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Function Output/Parameters: ptr to opcode linked list head ptr (OpCodeType **),
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result msg of fct state after completion (char *)
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Function Output/Returned: Boolean result of operation (bool)
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Device Input/File: op code list uploaded
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Device Output/Device: none
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Dependencies: copyString, fopen, getStringToDelimiter, compareString, fclose,
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malloc, getOpCommand, updateStartCount, updateEndCount,
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clearMetaDataList, free, addNode
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*/
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bool getMetaData(const char *fileName,
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OpCodeType **opCodeDataHead, char *endStateMsg)
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{
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// initialize function and variables
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// iniitialize read only constant
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const char READ_ONLY_FLAG[] = "r";
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// initialize variables
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int accessResult, startCount = 0, endCount = 0;
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char dataBuffer[MAX_STR_LEN];
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bool returnState = true;
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OpCodeType *newNodePtr;
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OpCodeType *localHeadPtr = NULL;
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FILE *fileAccessPtr;
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// initialize opcode data pointer in case of return error
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*opCodeDataHead = NULL;
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// initialize end state message
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// fct: copyString
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copyString(endStateMsg, "Metadata file upload successful");
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// open file for reading
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// fct: fopen
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fileAccessPtr = fopen(fileName, READ_ONLY_FLAG);
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// check for file open failure
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if(fileAccessPtr == NULL)
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{
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// set end state message
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// fct: copyString
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copyString(endStateMsg, "Metadata file access error");
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// return file access error
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return false;
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}
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// check first line for correct leader
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// fct: getStringToDelimiter, compareString
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if(!getStringToDelimiter(fileAccessPtr, COLON, dataBuffer) ||
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compareString(dataBuffer, "Start Program Meta-Data Code") != 0)
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{
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// close file
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// fct: fclose
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fclose(fileAccessPtr);
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// set end state message
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// fct: copyString
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copyString(endStateMsg, "Corrupt metadata leader line error");
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// return corrupt descriptor error
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return false;
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}
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// allocate memory for the temporary data structure
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// fct: malloc
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newNodePtr = (OpCodeType *) malloc(sizeof(OpCodeType));
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// get the first op command
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// fct: getOpCommand
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accessResult = getOpCommand(fileAccessPtr, newNodePtr);
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// get start and end counts for later comparison
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// fct: updateStartCount, updateEndCount
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startCount = updateStartCount(startCount, newNodePtr->strArg1);
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endCount = updateEndCount(endCount, newNodePtr->strArg1);
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// check for failure of first complete op command
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if(accessResult != COMPLETE_OPCMD_FOUND_MSG)
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{
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// close file
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// fct: fclose
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fclose(fileAccessPtr);
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// clear data from the structure list
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// fct: clearMetaDataList
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*opCodeDataHead = clearMetaDataList(localHeadPtr);
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// free temporary structure memory
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// fct: free
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free(newNodePtr);
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// set end state message
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// fct: copyString
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copyString(endStateMsg, "Metadata incomplete first op command found");
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// return result of operation
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return false;
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}
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// loop across all remaining op commands
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// (while complete op commands are found)
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while(accessResult == COMPLETE_OPCMD_FOUND_MSG)
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{
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// add the new op command to the linked list
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// fct: addNode
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localHeadPtr = addNode(localHeadPtr, newNodePtr);
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// get a new op command
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// fct: getOpCommand
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accessResult = getOpCommand(fileAccessPtr, newNodePtr);
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// update start and end counts for later comparison
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// fct: updateStartCount, updateEndCount
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startCount = updateStartCount(startCount, newNodePtr->strArg1);
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endCount = updateEndCount(endCount, newNodePtr->strArg1);
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}
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// end loop across all remaining op commands
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// check for last op command found
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if(accessResult == LAST_OPCMD_FOUND_MSG)
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{
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// check for start and end opcode counts equal
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if(startCount == endCount)
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{
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// add the last node to the linked list
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// fct: addNode
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localHeadPtr = addNode(localHeadPtr, newNodePtr);
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// set access result to no error for later operation
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accessResult = NO_ACCESS_ERR;
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// check last line for incorrect end descriptor
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// fct: getStringToDelimiter, compareString
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if(!getStringToDelimiter(fileAccessPtr, PERIOD, dataBuffer) ||
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compareString(dataBuffer, "End Program Meta-Data Code") != 0)
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{
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// set access result to corrupted descriptor error
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accessResult = MD_CORRUPT_DESCRIPTOR_ERR;
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// set end state message
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// fct: copyString
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copyString(endStateMsg, "Metadata corrupted descriptor error");
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}
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}
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// otherwise, assume start/end counts not equal
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else
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{
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// close file
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// fct: fclose
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fclose(fileAccessPtr);
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// clear data from the structure list
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// fct: clearMetaDataList
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*opCodeDataHead = clearMetaDataList(localHeadPtr);
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// free temporary structure memory
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// fct: free
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free(newNodePtr);
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// set access result to error
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accessResult = UNBALANCED_START_END_ERR;
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// set end state message
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// fct: copyString
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copyString(endStateMsg,
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"Unbalanced start and end arguments in metadata");
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// return result of operation
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return false;
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}
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}
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// otherwise, assume didn't find end
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else
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{
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// set end state message
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// fct: copyString
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copyString(endStateMsg, "Corrupted metadata opcode");
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// unset return state
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returnState = false;
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}
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// check for any errors found (not no error)
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if(accessResult != NO_ACCESS_ERR)
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{
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// clear the op command list
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// fct: clearMetaDataList
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localHeadPtr = clearMetaDataList(localHeadPtr);
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}
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// close access file
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// fct: fclose
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fclose(fileAccessPtr);
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// release temporary structure memory
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// fct: free
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free(newNodePtr);
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// assign temporary local head ptr to parameter return ptr
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*opCodeDataHead = localHeadPtr;
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// return access result
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return returnState;
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}
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/*
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Name: getOpCommand
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Process: acquires one op command line from a previously opened file,
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parses it, and sets various struct members according to the
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three letter command
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Function Input/Parameters: ptr to open file handle (FILE *)
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Function Output/Parameters: ptr to one opcode struct (OpCodeType *)
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Function Output/Returned: coded result of operation (OpCodeMessages)
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Device Input/File: opcode line uploaded
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Device Output/Device: none
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Dependencies: getStringToDelimiter, getCommand, copyString, verifyValidCommand,
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compareString, getStringArg, verifyFirstStringArg, getNumberArg
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*/
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OpCodeMessages getOpCommand(FILE *filePtr, OpCodeType *inData)
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{
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// initialize function and variables
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// initialize local constants
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const int MAX_CMD_LENGTH = 5;
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const int MAX_ARG_STR_LENGTH = 15;
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// initialize other variables
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int numBuffer = 0;
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char strBuffer[STD_STR_LEN];
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char cmdBuffer[MAX_CMD_LENGTH];
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char argStrBuffer[MAX_ARG_STR_LENGTH];
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int runningStringIndex = 0;
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bool arg2FailureFlag = false;
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bool arg3FailureFlag = false;
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// get whole op command as string, check for successful access
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// fct: getStringToDelimiter
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if(getStringToDelimiter(filePtr, SEMICOLON, strBuffer))
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{
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// get three-letter command
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// fct: getCommand
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runningStringIndex = getCommand(cmdBuffer,
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strBuffer, runningStringIndex);
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// assign op command to node
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// fct: copyString
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copyString(inData->command, cmdBuffer);
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}
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// otherwise, assume unsuccessful access
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else
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{
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// set ptr to data structure to null
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inData = NULL;
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// return op command access failure
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return OPCMD_ACCESS_ERR;
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}
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// verify op command
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if(!verifyValidCommand(cmdBuffer))
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{
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// return op command error
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return CORRUPT_OPCMD_ERR;
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}
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// set all struct values that may not be initialized to defaults
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inData->pid = 0;
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inData->inOutArg[0] = NULL_CHAR;
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inData->intArg2 = 0;
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inData->intArg3 = 0;
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inData->opEndTime = 0.0;
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inData->nextNode = NULL;
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// check for device command
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if(compareString(cmdBuffer, "dev") == 0)
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{
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// get in/out arg
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runningStringIndex = getStringArg(argStrBuffer,
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strBuffer, runningStringIndex);
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// set device in/out arg
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copyString(inData->inOutArg, argStrBuffer);
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// check correct argument
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if(compareString(argStrBuffer, "in") != 0 &&
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compareString(argStrBuffer, "out") != 0)
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{
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// return argument error
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return CORRUPT_OPCMD_ARG_ERR;
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}
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}
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// get first string arg
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runningStringIndex = getStringArg(argStrBuffer,
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strBuffer, runningStringIndex);
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// set device in/out arg
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copyString(inData->strArg1, argStrBuffer);
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// check for legit first string arg
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if(!verifyFirstStringArg(argStrBuffer))
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{
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// return arg error
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return CORRUPT_OPCMD_ARG_ERR;
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}
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// check for last op command found
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if(compareString(inData->command, "sys") == 0 &&
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compareString(inData->strArg1, "end") == 0)
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{
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// return last op command found message
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return LAST_OPCMD_FOUND_MSG;
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}
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// check for app start seconds argument
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if(compareString(inData->command, "app") == 0 &&
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compareString(inData->strArg1, "start") == 0)
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{
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// get number argument
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// fct: getNumberArg
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runningStringIndex = getNumberArg(&numBuffer,
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strBuffer, runningStringIndex);
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// check for failed number access
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if(numBuffer <= BAD_ARG_VAL)
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{
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// set failure flag
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arg2FailureFlag = true;
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}
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// set first int argument to number
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inData->intArg2 = numBuffer;
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}
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// check for cpu cycle time
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else if(compareString(inData->command, "cpu") == 0)
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{
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// get number argument
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// fct: getNumberArg
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runningStringIndex = getNumberArg(&numBuffer,
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strBuffer, runningStringIndex);
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// check for failed number access
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if(numBuffer <= BAD_ARG_VAL)
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{
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// set failure flag
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arg2FailureFlag = true;
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}
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// set first int argument to number
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inData->intArg2 = numBuffer;
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}
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// check for device cycle time
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else if(compareString(inData->command, "dev") == 0)
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{
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// get number argument
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// fct: getNumberArg
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runningStringIndex = getNumberArg(&numBuffer,
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strBuffer, runningStringIndex);
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// check for failed number access
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if(numBuffer <= BAD_ARG_VAL)
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{
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// set failure flag
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arg2FailureFlag = true;
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}
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// set first int argument to number
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inData->intArg2 = numBuffer;
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}
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// check for memory base and offset
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else if(compareString(inData->command, "mem") == 0)
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{
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// get number argument
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// fct: getNumberArg
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runningStringIndex = getNumberArg(&numBuffer,
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strBuffer, runningStringIndex);
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// check for failed number access
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if(numBuffer <= BAD_ARG_VAL)
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{
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// set failure flag
|
||||
arg2FailureFlag = true;
|
||||
}
|
||||
// set first int argument to number
|
||||
inData->intArg2 = numBuffer;
|
||||
// get number argument for offset
|
||||
// fct: getNumberArg
|
||||
runningStringIndex = getNumberArg(&numBuffer,
|
||||
strBuffer, runningStringIndex);
|
||||
if(numBuffer <= BAD_ARG_VAL)
|
||||
{
|
||||
// set failure flag
|
||||
arg3FailureFlag = true;
|
||||
}
|
||||
// set second int argument to number
|
||||
inData->intArg3 = numBuffer;
|
||||
}
|
||||
// check int args for upload failure
|
||||
if(arg2FailureFlag || arg3FailureFlag)
|
||||
{
|
||||
// return corrupt op command found message
|
||||
return CORRUPT_OPCMD_ARG_ERR;
|
||||
}
|
||||
// return complete op command found message
|
||||
return COMPLETE_OPCMD_FOUND_MSG;
|
||||
}
|
||||
|
||||
/*
|
||||
Name: getNumberArg
|
||||
Process: starts at given index, captures
|
||||
and assembles int arg, returns as parameter
|
||||
Function Input/Parameters: input str (const char *), starting index (int)
|
||||
Function Output/Parameters: pointer to captured integer value
|
||||
Function Output/Returned: updated index for next function start
|
||||
Device Input/Device: none
|
||||
Device Output/Device: none
|
||||
Dependencies: isDigit
|
||||
*/
|
||||
int getNumberArg(int *number, const char *inputStr, int index)
|
||||
{
|
||||
// initialize function and variables
|
||||
bool foundDigit = false;
|
||||
*number = 0;
|
||||
int multiplier = 1;
|
||||
// loop to skip whitespace
|
||||
while(inputStr[index] <= SPACE || inputStr[index] == COMMA)
|
||||
{
|
||||
// increment the index
|
||||
index = index + 1;
|
||||
}
|
||||
// loop across string length
|
||||
while(isDigit(inputStr[index]) &&
|
||||
inputStr[index] != NULL_CHAR)
|
||||
{
|
||||
// set digit found flag
|
||||
foundDigit = true;
|
||||
// assign digit to output
|
||||
(*number) = (*number) * multiplier + (inputStr[index] - '0');
|
||||
// increment index and multiplier
|
||||
index = index + 1;
|
||||
multiplier = 10;
|
||||
}
|
||||
// check for digit not found
|
||||
if(!foundDigit)
|
||||
{
|
||||
// set number to BAD_ARG_VAL, use dereference for ptr
|
||||
*number = BAD_ARG_VAL;
|
||||
}
|
||||
// return current index
|
||||
return index;
|
||||
}
|
||||
|
||||
/*
|
||||
Name: getStringArg
|
||||
Process: starts at given index, captures
|
||||
and assembles str arg, returns as parameter
|
||||
Function Input/Parameters: input str (const char *), starting index (int)
|
||||
Function Output/Parameters: ptr to captured string argument (char *)
|
||||
Function Output/Returned: updated index for next fct start
|
||||
Device Input/Device: none
|
||||
Device Output/Device: none
|
||||
Dependencies: none
|
||||
*/
|
||||
int getStringArg(char *strArg, const char *inputStr, int index)
|
||||
{
|
||||
// initialize function and variables
|
||||
int localIndex = 0;
|
||||
// loop to skip whitespace
|
||||
while(inputStr[index] <= SPACE || inputStr[index] == COMMA)
|
||||
{
|
||||
// increment the index
|
||||
index = index + 1;
|
||||
}
|
||||
// loop across string length
|
||||
while(inputStr[index] != COMMA && inputStr[index] != NULL_CHAR)
|
||||
{
|
||||
// assign character from input string to buffer string
|
||||
strArg[localIndex] = inputStr[index];
|
||||
// increment index
|
||||
index = index + 1;
|
||||
localIndex = localIndex + 1;
|
||||
// set next character to null character
|
||||
strArg[localIndex] = NULL_CHAR;
|
||||
}
|
||||
// return current index
|
||||
return index;
|
||||
}
|
||||
|
||||
/*
|
||||
Name: isDigit
|
||||
Process: tests character parameter for digit,
|
||||
returns true if is digit, false otherwise
|
||||
Function Input/Parameters: test character (char)
|
||||
Function Output/Parameters: none
|
||||
Function Output/Returned: bool result of test (bool)
|
||||
Device Input/Device: none
|
||||
Device Output/Device: none
|
||||
Dependencies: none
|
||||
*/
|
||||
bool isDigit(char testChar)
|
||||
{
|
||||
// check for test character between characters '0' - '9'
|
||||
// return true
|
||||
// otherwise, assume character if not digit, return false
|
||||
return testChar >= '0' && testChar <= '9';
|
||||
}
|
||||
|
||||
/*
|
||||
Name: updateEndCount
|
||||
Process: manages count of "end" arguments
|
||||
to be compared at end of process input
|
||||
Function Input/Parameters: initial count (int),
|
||||
test string for "end" (const char *)
|
||||
Function Output/Parameters: none
|
||||
Function Output/Returned: updated count, if "end" string found,
|
||||
otherwise no change
|
||||
Device Input/Device: none
|
||||
Device Output/Device: none
|
||||
Dependencies: compareString
|
||||
*/
|
||||
int updateEndCount(int count, const char *opString)
|
||||
{
|
||||
// check for "end" in op string
|
||||
// fct: compareString
|
||||
if(compareString(opString, "end") == 0)
|
||||
{
|
||||
// return incremented end count
|
||||
return count + 1;
|
||||
}
|
||||
// return unchanged end count
|
||||
return count;
|
||||
}
|
||||
|
||||
/*
|
||||
Name: updateStartCount
|
||||
Process: manages count of "start" arguments
|
||||
to be compared at start of process input
|
||||
Function Input/Parameters: initial count (int),
|
||||
test string for "start" (const char *)
|
||||
Function Output/Parameters: none
|
||||
Function Output/Returned: updated count, if "start" string found,
|
||||
otherwise no change
|
||||
Device Input/Device: none
|
||||
Device Output/Device: none
|
||||
Dependencies: compareString
|
||||
*/
|
||||
int updateStartCount(int count, const char *opString)
|
||||
{
|
||||
// check for "start" in op string
|
||||
// fct: compareString
|
||||
if (compareString(opString, "start") == 0)
|
||||
{
|
||||
// return incremented start count
|
||||
return count + 1;
|
||||
}
|
||||
// return unchanged start count
|
||||
return count;
|
||||
}
|
||||
|
||||
/*
|
||||
Name: verifyFirstStringArg
|
||||
Process: checks for all possibilities of first argument string of op command
|
||||
Function Input/Parameters: test string (const char *)
|
||||
Function Output/Parameters: none
|
||||
Function Output/Returned: bool result of test (bool)
|
||||
Device Input/Device: none
|
||||
Device Output/Device: none
|
||||
Dependencies: compareString
|
||||
*/
|
||||
bool verifyFirstStringArg(const char *strArg)
|
||||
{
|
||||
// check for string holding correct first argument
|
||||
// fct: compareString
|
||||
// return true
|
||||
// otherwise, assume test fail, return false
|
||||
return compareString(strArg, "access") == 0 ||
|
||||
compareString(strArg, "allocate") == 0 ||
|
||||
compareString(strArg, "end") == 0 ||
|
||||
compareString(strArg, "ethernet") == 0 ||
|
||||
compareString(strArg, "hard drive") == 0 ||
|
||||
compareString(strArg, "keyboard") == 0 ||
|
||||
compareString(strArg, "monitor") == 0 ||
|
||||
compareString(strArg, "printer") == 0 ||
|
||||
compareString(strArg, "process") == 0 ||
|
||||
compareString(strArg, "serial") == 0 ||
|
||||
compareString(strArg, "sound signal") == 0 ||
|
||||
compareString(strArg, "start") == 0 ||
|
||||
compareString(strArg, "usb") == 0 ||
|
||||
compareString(strArg, "video signal") == 0;
|
||||
}
|
||||
|
||||
/*
|
||||
Name: verifyValidCommand
|
||||
Process: checks for all possibilities of three-letter opcode command
|
||||
Function Input/Parameters: test string for command (const char *)
|
||||
Function Output/Parameters: none
|
||||
Function Output/Returned: bool result of test (bool)
|
||||
Device Input/Device: none
|
||||
Device Output/Device: none
|
||||
Dependencies: compareString
|
||||
*/
|
||||
bool verifyValidCommand(char *testCmd)
|
||||
{
|
||||
// check for string holding three-letter opcode command
|
||||
// fct: compareString
|
||||
// return true
|
||||
// otherwise, assume test failure, return false
|
||||
return compareString(testCmd, "sys") == 0 ||
|
||||
compareString(testCmd, "app") == 0 ||
|
||||
compareString(testCmd, "cpu") == 0 ||
|
||||
compareString(testCmd, "mem") == 0 ||
|
||||
compareString(testCmd, "dev") == 0;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue