2 * $Logfile: /Freespace2/code/GlobalIncs/version.cpp $
9 * Revision 1.1 2002/05/03 03:28:09 root
13 * 4 8/09/99 2:21p Andsager
14 * Fix patching from multiplayer direct to launcher update tab.
16 * 3 8/06/99 3:32p Andsager
17 * Handle update when no registry is set
19 * 2 5/19/99 4:07p Dave
20 * Moved versioning code into a nice isolated common place. Fixed up
21 * updating code on the pxo screen. Fixed several stub problems.
23 * 1 5/18/99 4:28p Dave
31 #include "osregistry.h"
33 // ----------------------------------------------------------------------------------------------------------------
34 // VERSION DEFINES/VARS
38 #define VER(major, minor, build) (100*100*major+100*minor+build)
39 #define MAX_LINE_LENGTH 512
42 // ----------------------------------------------------------------------------------------------------------------
46 // compare version against the passed version file
47 // returns -1 on error
48 // 0 if we are an earlier version
50 // 2 if higher version
51 // fills in user version and latest version values if non-NULL
52 int version_compare(char *filename, int *u_major, int *u_minor, int *u_build, int *l_major, int *l_minor, int *l_build)
54 int usr_major, usr_minor, usr_build;
55 int latest_major, latest_minor, latest_build;
57 // open file and try backup, if needed
58 FILE *f = fopen(filename, "rt");
63 // grab the last line in file which isn't empty and isn't a comment
64 char buffer[MAX_LINE_LENGTH+1], verbuffer[MAX_LINE_LENGTH+1];
69 // Read the line into a temporary buffer
70 fgets(buffer, MAX_LINE_LENGTH, f);
72 // take the \n off the end of it
73 if (strlen(buffer)>0 && buffer[strlen(buffer) - 1] == '\n')
74 buffer[strlen(buffer) - 1] = 0;
76 // If the line is empty, go get another one
77 if (strlen(buffer) == 0) continue;
79 // If the line is a comment, go get another one
80 if (buffer[0] == VERSION_FILE_COMMENT_CHAR) continue;
82 // Line is a good one, so save it...
83 strcpy(verbuffer, buffer);
87 // Make sure a version line was found
88 if (strlen(verbuffer) == 0) {
89 // MessageBox(XSTR("Couldn't parse Version file!", 1205), XSTR("Error!", 1185), MB_OK|MB_ICONERROR);
93 // Get the most up to date Version number
98 if (sscanf(verbuffer, "%i %i %i", &latest_major, &latest_minor, &latest_build) != 3) {
99 // MessageBox(XSTR("Couldn't parse Version file!", 1205), XSTR("Error!", 1185), MB_OK|MB_ICONERROR);
103 // retrieve the user's current version
104 usr_major = os_config_read_uint("Version", "Major", 0);
105 usr_minor = os_config_read_uint("Version", "Minor", 0);
106 usr_build = os_config_read_uint("Version", "Build", 0);
108 // Make sure the user's Version was found!
109 if ( VER(usr_major, usr_minor, usr_build) == 0 ) {
110 // MessageBox(XSTR("The Freespace 2 Auto-Update program could not find your current game Version in the system registry.\n\nThis should be corrected by starting up the game, exiting the game, and then running the Auto-Update program.", 1206), XSTR("Unable to Determine User's Version", 1207), MB_OK|MB_ICONERROR);
111 return NO_VERSION_IN_REGISTRY;
114 // stuff outgoing values
116 *u_major = usr_major;
119 *u_minor = usr_minor;
122 *u_build = usr_build;
125 *l_major = latest_major;
128 *l_minor = latest_minor;
131 *l_build = latest_build;
134 // check to see if the user's version is up to date
135 if (VER(usr_major, usr_minor, usr_build) < VER(latest_major, latest_minor, latest_build)) {