/[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 1.1 by joko, Thu Jun 15 12:22:56 2006 UTC revision 1.6 by joko, Thu Jun 15 22:34:55 2006 UTC
# Line 1  Line 1 
1  /* $Id$ */  /* $Id$ */
2    
3  #include <stdlib.h>  #include <stdlib.h>
4    #include <stdio.h>
5  #include <errno.h>  #include <errno.h>
6    #include <windows.h>
7    
8    #include "min_shell.h"
9    
10    #define BOOL int
11    #define TRUE 1
12    #define FALSE 0
13    
14    
15    #define MAX_COMMAND_LENGTH 1024
16    
17  int main(int argc, char * argv[]) {  int main(int argc, char * argv[]) {
18    if (argc == 1) {    if (argc == 1) {
19      printf("No arguments given.");      //printf("No arguments given.");
20      exit(EXIT_FAILURE);      //exit(EXIT_FAILURE);
21        char filename[255] = "abc\0";
22        BOOL background = 0;
23        start_process(filename, background);
24      }
25      
26      if (argc == 2) {
27        FILE * script = fopen(argv[1], "r");
28        read_commands(script);
29        fclose(script);
30      }
31    }
32    
33    void read_commands(FILE * fp) {
34      
35      char command[MAX_COMMAND_LENGTH];
36      
37      fgets(command, MAX_COMMAND_LENGTH, fp);
38      chomp(command);
39      
40      process_command(command);
41    }
42    
43    /* if last char is newline, "strip" it */
44    void chomp(char * string) {
45      int string_length = strlen(string);
46      if (string[string_length-1] == '\n') {
47        string[string_length-1] = '\0';
48      }
49    }
50    
51    void process_command(char * command) {
52      printf("process_command: %s\n", command);
53      start_process(command, 0);
54    }
55    
56    BOOL start_process(char * filename, BOOL background) {
57    
58      STARTUPINFO si;
59      PROCESS_INFORMATION pi;
60    
61      //printf("start_process: '%s'\n", filename);
62      
63      ZeroMemory(&si,sizeof(si));
64      si.cb = sizeof(STARTUPINFO);
65      
66      ZeroMemory(&pi,sizeof(pi));
67      
68      CreateProcess(
69        NULL, filename,
70        NULL, NULL, FALSE, 0,
71        NULL, NULL,
72        &si,
73        &pi
74      );
75      check_alert_error("CreateProcess");
76      
77      if (!background) {
78        long status;
79        status = WaitForSingleObject(pi.hProcess, INFINITE);
80        if (status == WAIT_FAILED) {
81          check_alert_error("WaitForSingleObject");
82          return FALSE;
83        }
84      }
85      
86      return TRUE;
87    
88    }
89    
90    void check_alert_error(const char * error_source) {
91      DWORD dwError = GetLastError();
92    
93      HLOCAL message = NULL;
94      BOOL fOk;
95      
96      if (dwError == 0)
97        return;
98    
99      fOk = FormatMessage(
100        FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
101        NULL,
102        dwError,
103        MAKELANGID(LANG_NEUTRAL, SUBLANG_SYS_DEFAULT),
104        (PTSTR)&message,
105        0,
106        NULL
107      );
108    
109      if (message != NULL) {
110        fprintf(stderr, "Error with '%s': %s (Code %i)\n", error_source, message, dwError);
111        LocalFree(message);
112    }    }
113      
114  }  }
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