int main(void)
{
char message[1621]="";
initscr();
noecho();
cbreak();
keypad(stdscr,TRUE);
move(20,0);
hline(ACS_CKBOARD,80);
mvaddstr(21,0,"Press F1 to Exit Editor");
mvaddstr(21,39,"Press F3 to Clear Message");
mvaddstr(22,0,"Press CTRL-Y to Delete Current Line");
texteditor(message);
clear();
addstr("Exited text editor");
getch();
endwin();
printf("%s",message);
return 0;
}
int main(int argc, char* argv[])
{
/* This is the porition we ask user to run program with file path and mode to open*/
FILE* fp; //declare a file pointer to open file
int file_size; //a variable to know file size, but it is useless so you may remove it (I have declared various such variables during program typing)
int maxchars=size/*number of characters allowed to be opened*/,startrow=0/*cursor start row*/,startcol=0/*cursor start column*/;
int maxrows=10000/*maximum number of rows allowed calculated by (maxchars/maxcols)*/,maxcols=60/*maximum number of rows allowed calculated by (maxchars/maxrows)*/;
int displayrows=20/*number of rows displayed in text box(scroll added too)*/,returnhandler=1/*select behaviour for enter key press*/;
char *message=malloc(maxchars*sizeof(char)); //allocate memory for our message string
bool ins=false/*insert mode is initially false means text will be replaced in beginning*/,allowcr=true;
if(argc<3)/*in case program is not given the necessary arguments*/
{
printf("usage: %s filename mode | modes can be \nopen new file with [w] open existing file with [r]\n\n",argv[0]);/* generate an error */
return 0;/*and exit*/
}
if(strcmp(argv[2],"w")==0)/*if user asked toopen a new file*/
{
if(file_exist(argv[1]))/*check if file exist?*/
{
printf("file already exist : \n");/*in case file already exist, tell user about it*/
return 0;/*and exit*/
}
else /*in case file didn't exist already*/
fp=fopen(argv[1],"w+");/*create the file and assign it's address to fp*/
}
else if(strcmp(argv[2],"r")==0)/*in case user want to open an existing file*/
{
if(!file_exist(argv[1]))/*check if file exist*/
{
printf("file does not exist : \n");/*in case file didn't exist display the error*/
return 0;/*and exit*/
}
else/*in case file exist*/
fp=fopen(argv[1],"r+");/*open it*/
}
else/**in case user specified a mode other than r or w to open a file*/
{
printf("wrong mode specified\n");/*dsiplay error*/
return 0;/*exit*/
}
/////////// WE checked above if user has done everythign right while runing the program
////////////////file work above
// if user did everythign right then we read the data from openend file here
int i=0;/*just to count*/
char c;/*just to read a character from file */
if(fp!=NULL)/*if fp is pointing to a file*/
{
while((c=fgetc(fp))!=EOF)/*keep getting a charcetr from file unless it reaches end of file*/
{message[i]=(char)c;i++;}/*add the charcetr to data structure message*/
fclose(fp);/*close file when done traversing*/
}
// read all the text from file in variable message
///////////////////////////////////reading
//// doing our text screen initialization
initscr(); //initialize screen for text box
noecho(); //disable echo so whatever we press shouldn't be randomly displayed on textbox
cbreak(); //get all the key presses in our program except few specific signals
keypad(stdscr,TRUE);//initialize our screen for keypad for example arrow keys and num keys
////////////////////////menu down
move(20,0); // down menu starts from y=20
hline(ACS_CKBOARD,80); // placing a horizontal line to separate menu from text area here
///////////////Now we print menu here
mvaddstr(21,0,"Home = goto first character on current row");
mvaddstr(21,50,"F3 to search and remove Text");
mvaddstr(22,50,"F2 to delete all text");
mvaddstr(22,0,"PgDn = goto last character in text string");
mvaddstr(23,50,"F4 to replace Text");
mvaddstr(23,0,"INS = insert mode on/off");
mvaddstr(24,0,"PgUp = goto first character in text string");
mvaddstr(24,50,"Press ESCAPE to quit");
mvaddstr(25,0,"End = goto last character on current row");
mvaddstr(25,50,"CTRL-Y to Delete Current Line");
mvaddstr(26,0,"F6 to see number of words and characters");
mvaddstr(26,50,"F5 = to save file");
mvaddstr(27,0,"F7 to remove search marks");
///****************MENU above*/
////////////menu printed now call the most important function the text editor
texteditor(message,maxchars,startrow,startcol,maxrows,maxcols,displayrows,returnhandler,NULL,ins,allowcr);
/*with variables as explained above*/
// user exited text editor? clear and restrore original console windwo
clear();//once returned from texteditor clear the screen and buffer
endwin();//end window
// printf("Message\n-------\n\"%s\"",message);
free(message); // free memory allocated for message
return 0;//and exit
}
