03/win32/min_shell.c

/* $Id: min_shell.c,v 1.9 2006/06/15 23:16:01 joko Exp $ */

#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>

#include "min_shell.h"

int main(int argc, char * argv[]) {
  
  // interactive mode with prompt
  if (argc == 1) {
    fprintf(stderr, "Interactive mode not implemented yet.\n");
    //printf("No arguments given.");
    exit(EXIT_FAILURE);
  }
  
  // scripting mode
  if (argc == 2) {
    FILE * script = fopen(argv[1], "r");
    run_commands(script);
    fclose(script);
  }
}

void run_commands(FILE * fp) {
  
  char command[MAX_COMMAND_LENGTH];
  
  while (fgets(command, MAX_COMMAND_LENGTH, fp)) {
    int command_length;
    
    // strip newlines
    chomp(command);
    
    // ... and action
    dispatch_command(command);
  }
  
}


void dispatch_command(char * command) {

  BOOL background = FALSE;
  int command_length;
  char first_char;
  char * shell_command;

  // is it a shell command?
  first_char = command[0];
  if (strcmp(&first_char, ":") == 0) {
    
    // "calculate" shell command ...
    shell_command = command + 1;
    //printf("shell command: %s\n", shell_command);
    
    // ... and dispatch it
    
    // wait
    if (strcmp(shell_command, "wait") == 0) {
      // TODO
      os_wait_for_processes();
    
    // exit
    } else if (strcmp(shell_command, "exit") == 0) {
      exit(EXIT_SUCCESS);
    
    // unknown command
    } else {
      fprintf(stderr, "ERROR: Unknown shell command '%s'\n", shell_command);
    }
  
  // run program: background or foreground?
  } else {
    //printf("running: %s\n", command);
    command_length = strlen(command);
    if (command[command_length-1] == '&') {
      command[command_length-1] = '\0';
      background = TRUE;
    }
    
    os_start_process(command, background);
  }
}

1	/* $Id: min_shell.c,v 1.9 2006/06/15 23:16:01 joko Exp $ */
2
3	#include <stdlib.h>
4	#include <stdio.h>
5	#include <errno.h>
6	#include <string.h>
7
8	#include "min_shell.h"
9
10	int main(int argc, char * argv[]) {
11
12	// interactive mode with prompt
13	if (argc == 1) {
14	fprintf(stderr, "Interactive mode not implemented yet.\n");
15	//printf("No arguments given.");
16	exit(EXIT_FAILURE);
17	}
18
19	// scripting mode
20	if (argc == 2) {
21	FILE * script = fopen(argv[1], "r");
22	run_commands(script);
23	fclose(script);
24	}
25	}
26
27	void run_commands(FILE * fp) {
28
29	char command[MAX_COMMAND_LENGTH];
30
31	while (fgets(command, MAX_COMMAND_LENGTH, fp)) {
32	int command_length;
33
34	// strip newlines
35	chomp(command);
36
37	// ... and action
38	dispatch_command(command);
39	}
40
41	}
42
43
44	void dispatch_command(char * command) {
45
46	BOOL background = FALSE;
47	int command_length;
48	char first_char;
49	char * shell_command;
50
51	// is it a shell command?
52	first_char = command[0];
53	if (strcmp(&first_char, ":") == 0) {
54
55	// "calculate" shell command ...
56	shell_command = command + 1;
57	//printf("shell command: %s\n", shell_command);
58
59	// ... and dispatch it
60
61	// wait
62	if (strcmp(shell_command, "wait") == 0) {
63	// TODO
64	os_wait_for_processes();
65
66	// exit
67	} else if (strcmp(shell_command, "exit") == 0) {
68	exit(EXIT_SUCCESS);
69
70	// unknown command
71	} else {
72	fprintf(stderr, "ERROR: Unknown shell command '%s'\n", shell_command);
73	}
74
75	// run program: background or foreground?
76	} else {
77	//printf("running: %s\n", command);
78	command_length = strlen(command);
79	if (command[command_length-1] == '&') {
80	command[command_length-1] = '\0';
81	background = TRUE;
82	}
83
84	os_start_process(command, background);
85	}
86	}
87
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