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util.c
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util.c
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// Group Number: 31
// MADHUR PANWAR 2016B4A70933P
// TUSSANK GUPTA 2016B3A70528P
// SALMAAN SHAHID 2016B4A70580P
// APURV BAJAJ 2016B3A70549P
// HASAN NAQVI 2016B5A70452P
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
/*
* Some helper functions
*/
char* allocString(int size){
char *cstr = (char *)(calloc(size+1,sizeof(char)));
return cstr;
}
/*
* Tests whether strings s1 and s2 are equal
*/
int equals(char *s1, char *s2){
if(s1 == NULL && s2 == NULL)
return true;
else if(s1 == NULL || s2 == NULL)
return false;
else
return (strcmp(s1,s2) == 0);
}
char * trim (char *str) { // remove leading and trailing spaces
// str = strdup(str);
if(str == NULL)
return NULL;
int begin = 0, end = strlen(str) -1, i;
while (isspace (str[begin])){
begin++;
}
if (str[begin] != '\0'){
while (isspace (str[end]) || str[end] == '\n'){
end--;
}
}
str[end + 1] = '\0';
return str+begin;
}
/*
Count the number of occurrences of tk in str
*/
int numTk(char *str,char tk){
int i;
int len = strlen(str);
int cnt = 0;
for(i=0;i<len;i++)
if(str[i] == tk)
cnt++;
return cnt;
}
/*
* Split a string and put into an array based on the given delimiter
*/
char **strSplit(char *str, char tk){
if(equals(str,"") || equals(str,NULL))
return NULL;
char tkn[] = {tk, '\0'};
int sz = numTk(str,tk) + 2;
char **arr = (char **)(calloc(sz,sizeof(char *)));
char *tmpstr = strdup(str);
int i = 0;
char *token;
while((token = strsep(&tmpstr,tkn)))
arr[i++] = token;
arr[i] = NULL;
return arr;
}
void fcloseSafe(FILE *fp){
if(fp != NULL && fp != stdout){
fclose(fp);
}
}
char *generateOFilePath(char *asmFilePath){
if(asmFilePath == NULL)
return NULL;
char *ofile = (char *)(calloc(100,sizeof(char)));
strcpy(ofile,asmFilePath);
int sz = strlen(asmFilePath);
bool dotFound = false;
int i;
for(i=sz-1; i>=0; i--){
if(ofile[i] == '.'){
dotFound = true;
break;
}
else if(ofile[i] == '/' || ofile[i] == '\\')
break;
}
if(dotFound){
ofile[i+1] = 'o';
ofile[i+2] = '\0';
return ofile;
}
else{
ofile[sz] = '.';
ofile[sz+1] = 'o';
ofile[sz+2] = '\0';
return ofile;
}
}
/*
* End of Helper functions
*/