/[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 1.3 by joko, Thu Jun 15 13:21:05 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 <windows.h>  #include <string.h>
7    
8  #define BOOL int  #include "min_shell.h"
 #define TRUE 1  
 #define FALSE 0  
9    
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, "> ");
16      char filename[255] = "abc\0";    }
17      BOOL background = 0;    
18      start_process(filename, background);    // scripting mode
19      if (argc == 2) {
20        FILE * script = fopen(argv[1], "r");
21        run_commands(script, "");
22        fclose(script);
23    }    }
24  }  }
25    
26  BOOL start_process(char *filename[], BOOL background) {  void run_commands(FILE * fp, char * prompt) {
27        
28    STARTUPINFO si;    char command[MAX_COMMAND_LENGTH];
   PROCESS_INFORMATION pi;  
29        
30    ZeroMemory(&si,sizeof(si));    // echo first prompt
31    si.cb=sizeof(STARTUPINFO);    fprintf(stdout, "%s", prompt);
32        while (fgets(command, MAX_COMMAND_LENGTH, fp)) {
33    ZeroMemory(&pi,sizeof(pi));      int command_length;
34    //pi.cb=sizeof(PROCESS_INFORMATION);      
35          // strip newlines
36    CreateProcess(      chomp(command);
37      NULL, "notepad.exe",      
38      NULL, NULL, FALSE, 0,      // ... and action
39      NULL, NULL,      dispatch_command(command);
40      &si,      
41      &pi      // echo prompt after executing shell command
42    );      fprintf(stdout, "%s", prompt);
     
   if (!background) {  
     long status;  
     status = WaitForSingleObject(pi.hProcess, INFINITE);  
     if (status == WAIT_FAILED) {  
       check_alert_error("WaitForSingleObject");  
     }  
43    }    }
44      
45  }  }
46    
 check_alert_error(char *error_source[]) {  
   DWORD dwError = GetLastError();  
47    
48    HLOCAL hlocal = NULL;  void dispatch_command(char * command) {
49    
50    BOOL fOk = FormatMessage(    BOOL background = FALSE;
51      FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,    int command_length;
52      NULL,    char first_char;
53      dwError,    char * shell_command;
54      MAKELANGID(LANG_NEUTRAL, SUBLANG_SYS_DEFAULT),  
55      (PTSTR)&hlocal,    // is it a shell command?
56      0,    first_char = command[0];
57      NULL    if (strcmp(&first_char, ":") == 0) {
58    );      
59        // "calculate" shell command ...
60    if (hlocal != NULL) {      shell_command = command + 1;
61      fprintf(stderr, "Error with '%s': %s", error_source, hlocal);      //printf("shell command: %s\n", shell_command);
62      LocalFree(hlocal);      
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    
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