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cvs2git: use CVS (rather than RCS) to extract the different

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file versions.

This allows you to do the conversion (although slowly) from
a remote repository, and besides, it's one less thing to worry
about when you don't need to look up the CVS Attic directories
etc.
This commit is contained in:
Linus Torvalds 2005-05-30 21:00:09 -07:00
parent d2b6f7c2fd
commit aff9f97a4f
1 changed files with 37 additions and 27 deletions
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64
cvs2git.c
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@ -24,6 +24,17 @@ static int verbose = 0;
* Hopefully David Mansfield will update his distribution soon
* enough (he's the one who wrote the patch, so at least we don't
* have to figt maintainer issues ;)
*
* Usage:
*
* TZ=UTC cvsps -A |
* cvs2git --cvsroot=[root] --module=[module] > script
*
* Creates a shell script that will generate the .git archive of
* the names CVS repository.
*
* IMPORTANT NOTE ABOUT "cvsps"! This requires version 2.1 or better,
* and the "TZ=UTC" and the "-A" flag is required for sane results!
*/
enum state {
Header,
@ -31,7 +42,8 @@ enum state {
Members
};
static char *rcsdir;
static const char *cvsroot;
static const char *cvsmodule;
static char date[100];
static char author[100];
@ -147,28 +159,8 @@ static void commit(void)
initial_commit = 0;
}
static void get_rcs_name(char *rcspathname, char *name, char *dir)
{
sprintf(rcspathname, "%s/%s,v", rcsdir, name);
if (!access(rcspathname, R_OK))
return;
sprintf(rcspathname, "%s/Attic/%s,v", rcsdir, name);
if (!access(rcspathname, R_OK))
return;
if (dir) {
sprintf(rcspathname, "%s/%.*s/Attic/%s,v", rcsdir, (int)(dir - name), name, dir+1);
if (!access(rcspathname, R_OK))
return;
}
fprintf(stderr, "Unable to find RCS file for %s\n", name);
exit(1);
}
static void update_file(char *line)
{
static char rcspathname[4096];
char *name, *version;
char *dir;
@ -194,9 +186,7 @@ static void update_file(char *line)
if (dir)
printf("mkdir -p %.*s\n", (int)(dir - name), name);
get_rcs_name(rcspathname, name, dir);
printf("co -q -p -r%s '%s' > '%s'\n", version, rcspathname, name);
printf("cvs -q -d %s checkout -r%s -p '%s/%s' > '%s'\n", cvsroot, version, cvsmodule, name, name);
printf("git-update-cache --add -- '%s'\n", name);
}
@ -217,10 +207,30 @@ int main(int argc, char **argv)
{
static char line[1000];
enum state state = Header;
int i;
rcsdir = getenv("RCSDIR");
if (!rcsdir) {
fprintf(stderr, "I need an $RCSDIR\n");
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!memcmp(arg, "--cvsroot=", 10)) {
cvsroot = arg + 10;
continue;
}
if (!memcmp(arg, "--module=", 9)) {
cvsmodule = arg+9;
continue;
}
if (!strcmp(arg, "-v")) {
verbose = 1;
continue;
}
}
if (!cvsroot)
cvsroot = getenv("CVSROOT");
if (!cvsmodule || !cvsroot) {
fprintf(stderr, "I need a CVSROOT and module name\n");
exit(1);
}