/[cvs]/joko/Uni/BSArch/03/win32/min_shell.c
ViewVC logotype

Diff of /joko/Uni/BSArch/03/win32/min_shell.c

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1.7 by joko, Thu Jun 15 22:58:58 2006 UTC revision 1.13 by joko, Fri Jun 16 00:47:07 2006 UTC
# Line 3  Line 3 
3  #include <stdlib.h>  #include <stdlib.h>
4  #include <stdio.h>  #include <stdio.h>
5  #include <errno.h>  #include <errno.h>
6    #include <string.h>
7    
8  #include "min_shell.h"  #include "min_shell.h"
9    
   
 #define MAX_COMMAND_LENGTH 1024  
   
10  int main(int argc, char * argv[]) {  int main(int argc, char * argv[]) {
11      
12      // interactive mode with prompt
13    if (argc == 1) {    if (argc == 1) {
14      //printf("No arguments given.");      fprintf(stderr, "Welcome to mini shell. Have fun!\n");
15      //exit(EXIT_FAILURE);      run_commands(stdin, "> ");
     char filename[255] = "abc\0";  
     BOOL background = 0;  
     os_start_process(filename, background);  
16    }    }
17        
18      // scripting mode
19    if (argc == 2) {    if (argc == 2) {
20      FILE * script = fopen(argv[1], "r");      FILE * script = fopen(argv[1], "r");
21      run_commands(script);      run_commands(script, "");
22      fclose(script);      fclose(script);
23    }    }
24  }  }
25    
26  void run_commands(FILE * fp) {  void run_commands(FILE * fp, char * prompt) {
27        
28    char command[MAX_COMMAND_LENGTH];    char command[MAX_COMMAND_LENGTH];
29        
30    fgets(command, MAX_COMMAND_LENGTH, fp);    // echo first prompt
31    chomp(command);    fprintf(stdout, "%s", prompt);
32      while (fgets(command, MAX_COMMAND_LENGTH, fp)) {
33        int command_length;
34        
35        // strip newlines
36        chomp(command);
37        
38        // ... and action
39        dispatch_command(command);
40        
41        // echo prompt after executing shell command
42        fprintf(stdout, "%s", prompt);
43      }
44        
   execute_command(command);  
45  }  }
46    
47    
48  void execute_command(char * command) {  void dispatch_command(char * command) {
49    printf("process_command: %s\n", command);  
50    os_start_process(command, 0);    BOOL background = FALSE;
51      int command_length;
52      char first_char;
53      char * shell_command;
54    
55      // is it a shell command?
56      first_char = command[0];
57      if (strcmp(&first_char, ":") == 0) {
58        
59        // "calculate" shell command ...
60        shell_command = command + 1;
61        //printf("shell command: %s\n", shell_command);
62        
63        // ... and dispatch it
64        
65        // wait
66        if (strcmp(shell_command, "wait") == 0) {
67          // TODO
68          os_wait_for_processes();
69        
70        // exit
71        } else if (strcmp(shell_command, "exit") == 0) {
72          exit(EXIT_SUCCESS);
73        
74        // unknown command
75        } else {
76          fprintf(stderr, "ERROR: Unknown shell command '%s'\n", shell_command);
77        }
78      
79      // run program: background or foreground?
80      } else {
81        //printf("running: %s\n", command);
82        command_length = strlen(command);
83        if (command[command_length-1] == '&') {
84          command[command_length-1] = '\0';
85          background = TRUE;
86        }
87        
88        os_start_process(command, background);
89      }
90  }  }
91    
Legend:
Removed from v.1.7  
changed lines
  Added in v.1.13
MailToCvsAdmin">MailToCvsAdmin
 ViewVC Help
Powered by ViewVC 1.1.26 RSS 2.0 feed