/[cvs]/joko/Uni/BSArch/03/win32/min_shell.c
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Diff of /joko/Uni/BSArch/03/win32/min_shell.c

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revision 1.7 by joko, Thu Jun 15 22:58:58 2006 UTC revision 1.11 by joko, Fri Jun 16 00:31:50 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        fprintf(stderr, "Interactive mode not implemented yet.\n");
15      //printf("No arguments given.");      //printf("No arguments given.");
16      //exit(EXIT_FAILURE);      exit(EXIT_FAILURE);
     char filename[255] = "abc\0";  
     BOOL background = 0;  
     os_start_process(filename, background);  
17    }    }
18        
19      // scripting mode
20    if (argc == 2) {    if (argc == 2) {
21      FILE * script = fopen(argv[1], "r");      FILE * script = fopen(argv[1], "r");
22      run_commands(script);      run_commands(script);
# Line 29  void run_commands(FILE * fp) { Line 28  void run_commands(FILE * fp) {
28        
29    char command[MAX_COMMAND_LENGTH];    char command[MAX_COMMAND_LENGTH];
30        
31    fgets(command, MAX_COMMAND_LENGTH, fp);    while (fgets(command, MAX_COMMAND_LENGTH, fp)) {
32    chomp(command);      int command_length;
33        
34        // strip newlines
35        chomp(command);
36        
37        // ... and action
38        dispatch_command(command);
39      }
40        
   execute_command(command);  
41  }  }
42    
43    
44  void execute_command(char * command) {  void dispatch_command(char * command) {
45    printf("process_command: %s\n", command);  
46    os_start_process(command, 0);    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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