Commit | Line | Data |
---|---|---|
c911543b GV |
1 | /* |
2 | Simple program to start Emacs with its console window hidden. | |
3 | ||
4 | This program is provided purely for convenience, since most users will | |
5 | use Emacs in windowing (GUI) mode, and will not want to have an extra | |
6 | console window lying around. */ | |
7 | ||
662463d9 RS |
8 | /* |
9 | You may want to define this if you want to be able to install updated | |
10 | emacs binaries even when other users are using the current version. | |
11 | The problem with some file servers (notably Novell) is that an open | |
12 | file cannot be overwritten, deleted, or even renamed. So if someone | |
13 | is running emacs.exe already, you cannot install a newer version. | |
14 | By defining CHOOSE_NEWEST_EXE, you can name your new emacs.exe | |
15 | something else which matches "emacs*.exe", and runemacs will | |
16 | automatically select the newest emacs executeable in the bin directory. | |
17 | (So you'll probably be able to delete the old version some hours/days | |
18 | later). | |
19 | */ | |
20 | ||
21 | /* #define CHOOSE_NEWEST_EXE */ | |
22 | ||
c911543b GV |
23 | #define WIN32 |
24 | ||
25 | #include <windows.h> | |
26 | #include <string.h> | |
27 | #include <malloc.h> | |
28 | ||
29 | int WINAPI | |
30 | WinMain (HINSTANCE hSelf, HINSTANCE hPrev, LPSTR cmdline, int nShow) | |
31 | { | |
32 | STARTUPINFO start; | |
33 | SECURITY_ATTRIBUTES sec_attrs; | |
34 | SECURITY_DESCRIPTOR sec_desc; | |
35 | PROCESS_INFORMATION child; | |
36 | int wait_for_child = FALSE; | |
37 | DWORD ret_code = 0; | |
662463d9 RS |
38 | char *new_cmdline; |
39 | char *p; | |
c911543b GV |
40 | char modname[MAX_PATH]; |
41 | ||
42 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
43 | goto error; | |
44 | if ((p = strrchr (modname, '\\')) == NULL) | |
45 | goto error; | |
46 | *p = 0; | |
47 | ||
48 | new_cmdline = alloca (MAX_PATH + strlen (cmdline) + 1); | |
49 | strcpy (new_cmdline, modname); | |
c911543b | 50 | |
662463d9 | 51 | #ifdef CHOOSE_NEWEST_EXE |
c911543b | 52 | { |
662463d9 RS |
53 | /* Silly hack to allow new versions to be installed on |
54 | server even when current version is in use. */ | |
55 | ||
56 | char * best_name = alloca (MAX_PATH + 1); | |
57 | FILETIME best_time = {0,0}; | |
58 | WIN32_FIND_DATA wfd; | |
59 | HANDLE fh; | |
60 | p = new_cmdline + strlen (new_cmdline); | |
77727cfd | 61 | strcpy (p, "\\emacs*.exe "); |
662463d9 RS |
62 | fh = FindFirstFile (new_cmdline, &wfd); |
63 | if (fh == INVALID_HANDLE_VALUE) | |
64 | goto error; | |
65 | do | |
66 | { | |
67 | if (wfd.ftLastWriteTime.dwHighDateTime > best_time.dwHighDateTime | |
68 | || (wfd.ftLastWriteTime.dwHighDateTime == best_time.dwHighDateTime | |
69 | && wfd.ftLastWriteTime.dwLowDateTime > best_time.dwLowDateTime)) | |
70 | { | |
71 | best_time = wfd.ftLastWriteTime; | |
72 | strcpy (best_name, wfd.cFileName); | |
73 | } | |
74 | } | |
75 | while (FindNextFile (fh, &wfd)); | |
76 | FindClose (fh); | |
77 | *p++ = '\\'; | |
78 | strcpy (p, best_name); | |
79 | strcat (p, " "); | |
c911543b | 80 | } |
662463d9 | 81 | #else |
77727cfd | 82 | strcat (new_cmdline, "\\emacs.exe "); |
662463d9 RS |
83 | #endif |
84 | ||
85 | /* Append original arguments if any; first look for -wait as first | |
86 | argument, and apply that ourselves. */ | |
87 | if (strncmp (cmdline, "-wait", 5) == 0) | |
88 | { | |
89 | wait_for_child = TRUE; | |
90 | cmdline += 5; | |
91 | } | |
c911543b GV |
92 | strcat (new_cmdline, cmdline); |
93 | ||
662463d9 | 94 | /* Set emacs_dir variable if runemacs was in "%emacs_dir%\bin". */ |
c911543b | 95 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) |
662463d9 RS |
96 | { |
97 | *p = 0; | |
98 | for (p = modname; *p; p++) | |
99 | if (*p == '\\') *p = '/'; | |
100 | SetEnvironmentVariable ("emacs_dir", modname); | |
101 | } | |
c911543b GV |
102 | |
103 | memset (&start, 0, sizeof (start)); | |
104 | start.cb = sizeof (start); | |
105 | start.dwFlags = STARTF_USESHOWWINDOW; | |
106 | start.wShowWindow = SW_HIDE; | |
107 | ||
108 | sec_attrs.nLength = sizeof (sec_attrs); | |
109 | sec_attrs.lpSecurityDescriptor = NULL; | |
110 | sec_attrs.bInheritHandle = FALSE; | |
111 | ||
112 | if (CreateProcess (NULL, new_cmdline, &sec_attrs, NULL, TRUE, 0, | |
113 | NULL, NULL, &start, &child)) | |
114 | { | |
115 | if (wait_for_child) | |
116 | { | |
117 | WaitForSingleObject (child.hProcess, INFINITE); | |
118 | GetExitCodeProcess (child.hProcess, &ret_code); | |
119 | } | |
120 | CloseHandle (child.hThread); | |
121 | CloseHandle (child.hProcess); | |
122 | } | |
123 | else | |
124 | goto error; | |
125 | return (int) ret_code; | |
126 | ||
127 | error: | |
128 | MessageBox (NULL, "Could not start Emacs.", "Error", MB_ICONSTOP); | |
129 | return 1; | |
130 | } |