미니쉘(minishell) STEP01

최종 파일은 일단 첨부 하고 나중에 정리 하자.

minishell.zip

#include <stdio.h>

#include <string.h>

#include <stdlib.h>

#define CMD_MAX_LINE 255

typedef struct minishell_option_t {

int b_echo;

} minishell_option_s;

#ifndef FALSE

#define FALSE 0

#endif 

#ifndef TRUE

#define TRUE 1

#endif 

/*

fgets() reads in at most one less than size characters from stream  and

stores  them  into  the buffer pointed to by s.  Reading stops after an

EOF or a newline.  If a newline is read, it is stored into the  buffer.

A terminating  null  byte ('\0') is stored after the last character in

the buffer.

fgets() returns s on success, and NULL on error or when end of file occurs 

while no characters have been read.

*/

char * minishell_prompt = "minishell>";

char * minishell_exit = "exit";

minishell_option_s minishell_option = {TRUE};

char cmd_line[CMD_MAX_LINE];

int main(int argc, char * argv[])

{

fputs(minishell_prompt, stdout);

while(fgets(cmd_line,CMD_MAX_LINE,stdin)){

//cmd_line[CMD_MAX_LINE-1] = '\0';

//__fpurge(stdin); //리눅스 솔라리스 등에서만 가능!! 대신 다음줄을 사용

while( getchar() != '\n' );

if(!strncmp(cmd_line,minishell_exit,4)) exit(0);

if(minishell_option.b_echo)fputs(cmd_line,stdout);

fputs(minishell_prompt, stdout);

}

return 0;

}

minishell.zip

0.01MB