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 | #include <windows.h> |
24 | #include <string.h> | |
25 | #include <malloc.h> | |
26 | ||
27 | int WINAPI | |
28 | WinMain (HINSTANCE hSelf, HINSTANCE hPrev, LPSTR cmdline, int nShow) | |
29 | { | |
30 | STARTUPINFO start; | |
31 | SECURITY_ATTRIBUTES sec_attrs; | |
32 | SECURITY_DESCRIPTOR sec_desc; | |
33 | PROCESS_INFORMATION child; | |
34 | int wait_for_child = FALSE; | |
05c4be3c | 35 | DWORD priority_class = NORMAL_PRIORITY_CLASS; |
c911543b | 36 | DWORD ret_code = 0; |
662463d9 RS |
37 | char *new_cmdline; |
38 | char *p; | |
c911543b GV |
39 | char modname[MAX_PATH]; |
40 | ||
41 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
42 | goto error; | |
43 | if ((p = strrchr (modname, '\\')) == NULL) | |
44 | goto error; | |
45 | *p = 0; | |
46 | ||
0ac7bf6c JR |
47 | new_cmdline = alloca (MAX_PATH + strlen (cmdline) + 3); |
48 | /* Quote executable name in case of spaces in the path. */ | |
49 | *new_cmdline = '"'; | |
50 | strcpy (new_cmdline + 1, modname); | |
c911543b | 51 | |
662463d9 | 52 | #ifdef CHOOSE_NEWEST_EXE |
c911543b | 53 | { |
662463d9 RS |
54 | /* Silly hack to allow new versions to be installed on |
55 | server even when current version is in use. */ | |
56 | ||
57 | char * best_name = alloca (MAX_PATH + 1); | |
58 | FILETIME best_time = {0,0}; | |
59 | WIN32_FIND_DATA wfd; | |
60 | HANDLE fh; | |
61 | p = new_cmdline + strlen (new_cmdline); | |
0ac7bf6c | 62 | strcpy (p, "\\emacs*.exe\" "); |
662463d9 RS |
63 | fh = FindFirstFile (new_cmdline, &wfd); |
64 | if (fh == INVALID_HANDLE_VALUE) | |
65 | goto error; | |
66 | do | |
67 | { | |
68 | if (wfd.ftLastWriteTime.dwHighDateTime > best_time.dwHighDateTime | |
69 | || (wfd.ftLastWriteTime.dwHighDateTime == best_time.dwHighDateTime | |
70 | && wfd.ftLastWriteTime.dwLowDateTime > best_time.dwLowDateTime)) | |
71 | { | |
72 | best_time = wfd.ftLastWriteTime; | |
73 | strcpy (best_name, wfd.cFileName); | |
74 | } | |
75 | } | |
76 | while (FindNextFile (fh, &wfd)); | |
77 | FindClose (fh); | |
78 | *p++ = '\\'; | |
79 | strcpy (p, best_name); | |
80 | strcat (p, " "); | |
c911543b | 81 | } |
662463d9 | 82 | #else |
0ac7bf6c | 83 | strcat (new_cmdline, "\\emacs.exe\" "); |
662463d9 RS |
84 | #endif |
85 | ||
05c4be3c GV |
86 | /* Append original arguments if any; first look for arguments we |
87 | recognise (-wait, -high, and -low), and apply them ourselves. */ | |
88 | while (cmdline[0] == '-' || cmdline[0] == '/') | |
662463d9 | 89 | { |
05c4be3c GV |
90 | if (strncmp (cmdline+1, "wait", 4) == 0) |
91 | { | |
662463d9 RS |
92 | wait_for_child = TRUE; |
93 | cmdline += 5; | |
94 | } | |
05c4be3c GV |
95 | else if (strncmp (cmdline+1, "high", 4) == 0) |
96 | { | |
97 | priority_class = HIGH_PRIORITY_CLASS; | |
98 | cmdline += 5; | |
99 | } | |
100 | else if (strncmp (cmdline+1, "low", 3) == 0) | |
101 | { | |
102 | priority_class = IDLE_PRIORITY_CLASS; | |
103 | cmdline += 4; | |
104 | } | |
105 | else | |
106 | break; | |
107 | } | |
c911543b GV |
108 | strcat (new_cmdline, cmdline); |
109 | ||
662463d9 | 110 | /* Set emacs_dir variable if runemacs was in "%emacs_dir%\bin". */ |
c911543b | 111 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) |
662463d9 RS |
112 | { |
113 | *p = 0; | |
114 | for (p = modname; *p; p++) | |
115 | if (*p == '\\') *p = '/'; | |
116 | SetEnvironmentVariable ("emacs_dir", modname); | |
117 | } | |
c911543b GV |
118 | |
119 | memset (&start, 0, sizeof (start)); | |
120 | start.cb = sizeof (start); | |
121 | start.dwFlags = STARTF_USESHOWWINDOW; | |
122 | start.wShowWindow = SW_HIDE; | |
123 | ||
124 | sec_attrs.nLength = sizeof (sec_attrs); | |
125 | sec_attrs.lpSecurityDescriptor = NULL; | |
126 | sec_attrs.bInheritHandle = FALSE; | |
127 | ||
05c4be3c | 128 | if (CreateProcess (NULL, new_cmdline, &sec_attrs, NULL, TRUE, priority_class, |
17132120 | 129 | GetEnvironmentStrings (), NULL, &start, &child)) |
c911543b GV |
130 | { |
131 | if (wait_for_child) | |
132 | { | |
133 | WaitForSingleObject (child.hProcess, INFINITE); | |
134 | GetExitCodeProcess (child.hProcess, &ret_code); | |
135 | } | |
136 | CloseHandle (child.hThread); | |
137 | CloseHandle (child.hProcess); | |
138 | } | |
139 | else | |
140 | goto error; | |
141 | return (int) ret_code; | |
142 | ||
143 | error: | |
144 | MessageBox (NULL, "Could not start Emacs.", "Error", MB_ICONSTOP); | |
145 | return 1; | |
146 | } |