int main(int argc, char *argv[], char *envp[]){
char c;
int i, fd;
char *tmp = (char *)malloc(sizeof(char) * 100);
char *pathString = (char *)malloc(sizeof(char) * 256);
char *cmd = (char *)malloc(sizeof(char) * 100);
signal(SIGINT, handleSignal);
copyEnvp(envp);
getPath(myEnvParams, pathString);
insertPath(pathString);
if(fork() == 0){
execve("/usr/bin/clear", argv, myEnvParams);
exit(1);
}
else{
wait(NULL);
}
// printPrompt(); /* uncomment this line and comment the next line to change the prompt to '<userName>@<hostName>@myShell:' */
printf("[myShell]: ");
fflush(stdout);
while(c != EOF){
c = getchar();
switch(c){
case '\n':
if(tmp[0] == '\0'){
// printPrompt(); /* uncomment this line and comment the next line to change the prompt to '<userName>@<hostName>@myShell:' */
printf("[myShell]: ");
}
else{
fillArgv(tmp);
strcpy(cmd, myArguments[0]);
strcat(cmd, "\0");
if(index(cmd, '/') == NULL){
if(attachPath(cmd) == 0){
executeCommand(cmd);
}
else{
printf("%s: command not found\n", cmd);
}
}
else{
if((fd = open(cmd, O_RDONLY)) > 0){
close(fd);
executeCommand(cmd);
}
else{
printf("%s: command not found\n", cmd);
}
}
freeMemory();
// printPrompt(); /* uncomment this line and comment the next line to change the prompt to '<userName>@<hostName>@myShell:' */
printf("[myShell]: ");
memset(cmd, '\0', 100);
}
memset(tmp, '\0', 100);
break;
default:
strncat(tmp, &c, 1);
break;
}
}
free(tmp);
free(pathString);
for(i = 0; myEnvParams[i] != NULL; i++) free(myEnvParams[i]);
for(i = 0; i < 10; i++) free(searchPath[i]);
printf("\n");
return 0;
}
int
main(int argc, char *argv[], char *envp[])
{
char *line;
int returnValue;
int i, fd;
char *pathString = (char *)malloc(sizeof(char) * 256);
char *cmd = (char *)malloc(sizeof(char) * 256);
bzero(pathString, 256);
bzero(cmd, 256);
/* Manage Signals */
signal(SIGINT, SIG_IGN);
signal(SIGQUIT,SIG_IGN);
// signal(SIGCHLD,SIG_IGN);
signal(SIGKILL,SIG_IGN);
signal(SIGTERM,SIG_IGN);
signal(SIGINT, handleSignal);
/* Extract the PATH= var from envp */
getPathString(envp, pathString);
/* Insert each path to be searched into searchPath[][] */
insertPathStringToSearch(searchPath, pathString);
/* Print about Slash */
clrScreen(argv, envp);
printf("%s", aboutSlash);
printf("PID=%d\n", getpid());
#if SLASH_DEBUG
for(i=0; envp[i] != NULL; i++)
printf("%s\n", envp[i]);
#endif
/* Bind our completer + History Feature */
initialize_readline();
while(1)
{
line = readline ("\x1b[96m<$lash/>\x1b[00m "); /* Print in Red! */
#if SLASH_DEBUG
printf("Input: %s\n", line);
#endif
if(*line)
{
add_history (line);
returnValue = execute_line (line);
if(returnValue == CMD_EXIT)
break;
if(returnValue == CMD_UNKNOWN)
{
#if SLASH_DEBUG
printf("CMD_UNKNOWN: %s\n", line);
#endif
/* Extract args to command into slashArgv[][] */
nullifyArgv(slashArgv);
fillArgv(line, slashArgv);
bzero(cmd, 256);
strncpy(cmd, slashArgv[0], strlen(slashArgv[0]));
strncat(cmd, "\0", 1);
#if SLASH_DEBUG
printf("arg[0]: %s\n", slashArgv[0]);
printf("cmd: %s\n", cmd);
#endif
if(index(cmd, '/') == NULL)
{
if(attachPath(cmd, searchPath) == 0)
{
callFork(cmd, slashArgv, envp);
}
else
printf("%s: command not found\n", cmd);
}
else
{
if((fd = open(cmd, O_RDONLY)) > 0)
{
close(fd);
callFork(cmd, slashArgv, envp);
}
else
printf("%s: command not found\n", cmd);
}
freeArgv(slashArgv);
}
}
if(line != NULL)
free(line);
fflush(stdout);
}
free(cmd);
free(pathString);
for(i=0;i<50;i++)
free(searchPath[i]);
return 0;
}