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183
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1 /*
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2 Simple program to start Emacs with its console window hidden.
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3
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4 This program is provided purely for convenience, since most users will
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5 use Emacs in windowing (GUI) mode, and will not want to have an extra
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6 console window lying around. */
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7
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8 /*
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9 You may want to define this if you want to be able to install updated
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10 emacs binaries even when other users are using the current version.
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11 The problem with some file servers (notably Novell) is that an open
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12 file cannot be overwritten, deleted, or even renamed. So if someone
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13 is running emacs.exe already, you cannot install a newer version.
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14 By defining CHOOSE_NEWEST_EXE, you can name your new emacs.exe
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15 something else which matches "emacs*.exe", and runemacs will
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16 automatically select the newest emacs executeable in the bin directory.
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17 (So you'll probably be able to delete the old version some hours/days
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18 later).
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19 */
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20
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21 /* #define CHOOSE_NEWEST_EXE */
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22
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23 #define WIN32
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24
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25 #include <windows.h>
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26 #include <string.h>
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27 #include <malloc.h>
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28
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290
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29 #if defined(__CYGWIN32__)
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30 #include <sys/types.h>
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31 #include <sys/stat.h>
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32 #endif
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33
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183
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34 int WINAPI
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35 WinMain (HINSTANCE hSelf, HINSTANCE hPrev, LPSTR cmdline, int nShow)
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36 {
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37 STARTUPINFO start;
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38 SECURITY_ATTRIBUTES sec_attrs;
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39 SECURITY_DESCRIPTOR sec_desc;
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40 PROCESS_INFORMATION child;
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41 int wait_for_child = FALSE;
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42 DWORD ret_code = 0;
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43 char *new_cmdline;
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321
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44 char *basename;
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183
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45 char *p;
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46 char modname[MAX_PATH];
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47
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48 if (!GetModuleFileName (NULL, modname, MAX_PATH))
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49 goto error;
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50 if ((p = strrchr (modname, '\\')) == NULL)
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51 goto error;
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321
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52
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53 basename = alloca(strlen(p) + 1);
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54 strcpy (basename, p + 1);
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55
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183
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56 *p = 0;
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57
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58 new_cmdline = alloca (MAX_PATH + strlen (cmdline) + 1);
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59 strcpy (new_cmdline, modname);
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60
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61 #ifdef CHOOSE_NEWEST_EXE
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62 {
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63 /* Silly hack to allow new versions to be installed on
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64 server even when current version is in use. */
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65
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66 char * best_name = alloca (MAX_PATH + 1);
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67 FILETIME best_time = {0,0};
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68 WIN32_FIND_DATA wfd;
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69 HANDLE fh;
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70 p = new_cmdline + strlen (new_cmdline);
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71 strcpy (p, "\\xemacs*.exe ");
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72 fh = FindFirstFile (new_cmdline, &wfd);
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73 if (fh == INVALID_HANDLE_VALUE)
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74 goto error;
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75 do
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76 {
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77 if (wfd.ftLastWriteTime.dwHighDateTime > best_time.dwHighDateTime
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78 || (wfd.ftLastWriteTime.dwHighDateTime == best_time.dwHighDateTime
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79 && wfd.ftLastWriteTime.dwLowDateTime > best_time.dwLowDateTime))
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80 {
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81 best_time = wfd.ftLastWriteTime;
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82 strcpy (best_name, wfd.cFileName);
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83 }
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84 }
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85 while (FindNextFile (fh, &wfd));
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86 FindClose (fh);
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87 *p++ = '\\';
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88 strcpy (p, best_name);
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89 strcat (p, " ");
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90 }
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91 #else
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290
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92 #if defined(__CYGWIN32__)
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93 {
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94 struct stat stbuf;
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95 char sym_link_name[MAX_PATH+1], real_name[MAX_PATH+1];
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96
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97 strcpy(sym_link_name, new_cmdline);
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321
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98 if (strcmp(basename, "rungnuclient.exe") == 0)
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99 strcat(new_cmdline, "\\gnuclient.exe ");
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100 else if (strcmp(basename, "runemacs.exe") == 0)
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290
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101 {
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321
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102 strcat(sym_link_name, "\\xemacs");
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103
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104 if (lstat(sym_link_name, &stbuf) == 0)
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290
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105 {
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321
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106 if ((stbuf.st_mode & S_IFLNK) == S_IFLNK)
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290
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107 {
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321
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108 if (readlink(sym_link_name, real_name, sizeof(real_name)) == -1)
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109 {
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110 MessageBox (NULL, "Error reading symbolic link for xemacs",
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111 "Error", MB_ICONSTOP);
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112 return 1;
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113 }
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114 else
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115 {
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116 strcat(new_cmdline, "\\");
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117 strcat(new_cmdline, real_name);
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118 strcat(new_cmdline, " ");
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119 }
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290
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120 }
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121 else
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321
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122 strcat(new_cmdline, "\\xemacs ");
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290
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123 }
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124 else
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321
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125 {
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126 MessageBox (NULL, "can't locate XEmacs executable",
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127 "Error", MB_ICONSTOP);
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128 return 1;
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129 }
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290
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130 }
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131 }
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132 #else
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321
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133 if (strcmp(basename, "rungnuclient.exe") == 0)
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134 strcat (new_cmdline, "\\gnuclient.exe ");
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135 else
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136 strcat (new_cmdline, "\\xemacs.exe ");
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183
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137 #endif
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290
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138 #endif
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183
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139
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140 /* Append original arguments if any; first look for -wait as first
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141 argument, and apply that ourselves. */
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142 if (strncmp (cmdline, "-wait", 5) == 0)
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143 {
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144 wait_for_child = TRUE;
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145 cmdline += 5;
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146 }
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147 strcat (new_cmdline, cmdline);
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148
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149 /* Set emacs_dir variable if runemacs was in "%emacs_dir%\bin". */
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150 if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0)
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151 {
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152 *p = 0;
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153 for (p = modname; *p; p++)
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154 if (*p == '\\') *p = '/';
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155 SetEnvironmentVariable ("emacs_dir", modname);
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156 }
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157
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158 memset (&start, 0, sizeof (start));
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159 start.cb = sizeof (start);
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160 start.dwFlags = STARTF_USESHOWWINDOW;
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161 start.wShowWindow = SW_HIDE;
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162
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163 sec_attrs.nLength = sizeof (sec_attrs);
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164 sec_attrs.lpSecurityDescriptor = NULL;
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165 sec_attrs.bInheritHandle = FALSE;
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166
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167 if (CreateProcess (NULL, new_cmdline, &sec_attrs, NULL, TRUE, 0,
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168 NULL, NULL, &start, &child))
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169 {
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170 if (wait_for_child)
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171 {
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172 WaitForSingleObject (child.hProcess, INFINITE);
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173 GetExitCodeProcess (child.hProcess, &ret_code);
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174 }
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175 CloseHandle (child.hThread);
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176 CloseHandle (child.hProcess);
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177 }
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178 else
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179 goto error;
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180 return (int) ret_code;
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181
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182 error:
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321
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183 MessageBox (NULL, "Could not start XEmacs or gnuclient.", "Error", MB_ICONSTOP);
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183
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184 return 1;
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185 }
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