315 lines
6.5 KiB
C
315 lines
6.5 KiB
C
/*
|
|
* cvs2git
|
|
*
|
|
* Copyright (C) Linus Torvalds 2005
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
static int verbose = 0;
|
|
|
|
/*
|
|
* This is a really stupid program that takes cvsps output, and
|
|
* generates a a long _shell_script_ that will create the GIT archive
|
|
* from it.
|
|
*
|
|
* You've been warned. I told you it was stupid.
|
|
*
|
|
* NOTE NOTE NOTE! In order to do branches correctly, this needs
|
|
* the fixed cvsps that has the "Ancestor branch" tag output.
|
|
* 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,
|
|
Log,
|
|
Members
|
|
};
|
|
|
|
static const char *cvsroot;
|
|
static const char *cvsmodule;
|
|
|
|
static char date[100];
|
|
static char author[100];
|
|
static char branch[100];
|
|
static char ancestor[100];
|
|
static char tag[100];
|
|
static char log[32768];
|
|
static int loglen = 0;
|
|
static int initial_commit = 1;
|
|
|
|
static void lookup_author(char *n, char **name, char **email)
|
|
{
|
|
/*
|
|
* FIXME!!! I'm lazy and stupid.
|
|
*
|
|
* This could be something like
|
|
*
|
|
* printf("lookup_author '%s'\n", n);
|
|
* *name = "$author_name";
|
|
* *email = "$author_email";
|
|
*
|
|
* and that would allow the script to do its own
|
|
* lookups at run-time.
|
|
*/
|
|
*name = n;
|
|
*email = n;
|
|
}
|
|
|
|
static void prepare_commit(void)
|
|
{
|
|
char *author_name, *author_email;
|
|
char *src_branch;
|
|
|
|
lookup_author(author, &author_name, &author_email);
|
|
|
|
printf("export GIT_COMMITTER_NAME=%s\n", author_name);
|
|
printf("export GIT_COMMITTER_EMAIL=%s\n", author_email);
|
|
printf("export GIT_COMMITTER_DATE='+0000 %s'\n", date);
|
|
|
|
printf("export GIT_AUTHOR_NAME=%s\n", author_name);
|
|
printf("export GIT_AUTHOR_EMAIL=%s\n", author_email);
|
|
printf("export GIT_AUTHOR_DATE='+0000 %s'\n", date);
|
|
|
|
if (initial_commit)
|
|
return;
|
|
|
|
src_branch = *ancestor ? ancestor : branch;
|
|
if (!strcmp(src_branch, "HEAD"))
|
|
src_branch = "master";
|
|
printf("ln -sf refs/heads/'%s' .git/HEAD\n", src_branch);
|
|
|
|
/*
|
|
* Even if cvsps claims an ancestor, we'll let the new
|
|
* branch name take precedence if it already exists
|
|
*/
|
|
if (*ancestor) {
|
|
src_branch = branch;
|
|
if (!strcmp(src_branch, "HEAD"))
|
|
src_branch = "master";
|
|
printf("[ -e .git/refs/heads/'%s' ] && ln -sf refs/heads/'%s' .git/HEAD\n",
|
|
src_branch, src_branch);
|
|
}
|
|
|
|
printf("git-read-tree -m HEAD || exit 1\n");
|
|
printf("git-checkout-cache -f -u -a\n");
|
|
}
|
|
|
|
static void commit(void)
|
|
{
|
|
const char *cmit_parent = initial_commit ? "" : "-p HEAD";
|
|
const char *dst_branch;
|
|
char *space;
|
|
int i;
|
|
|
|
printf("tree=$(git-write-tree)\n");
|
|
printf("cat > .cmitmsg <<EOFMSG\n");
|
|
|
|
/* Escape $ characters, and remove control characters */
|
|
for (i = 0; i < loglen; i++) {
|
|
unsigned char c = log[i];
|
|
|
|
switch (c) {
|
|
case '$':
|
|
case '\\':
|
|
case '`':
|
|
putchar('\\');
|
|
break;
|
|
case 0 ... 31:
|
|
if (c == '\n' || c == '\t')
|
|
break;
|
|
case 128 ... 159:
|
|
continue;
|
|
}
|
|
putchar(c);
|
|
}
|
|
printf("\nEOFMSG\n");
|
|
printf("commit=$(cat .cmitmsg | git-commit-tree $tree %s)\n", cmit_parent);
|
|
|
|
dst_branch = branch;
|
|
if (!strcmp(dst_branch, "HEAD"))
|
|
dst_branch = "master";
|
|
|
|
printf("echo $commit > .git/refs/heads/'%s'\n", dst_branch);
|
|
|
|
space = strchr(tag, ' ');
|
|
if (space)
|
|
*space = 0;
|
|
if (strcmp(tag, "(none)"))
|
|
printf("echo $commit > .git/refs/tags/'%s'\n", tag);
|
|
|
|
printf("echo 'Committed (to %s):' ; cat .cmitmsg; echo\n", dst_branch);
|
|
|
|
*date = 0;
|
|
*author = 0;
|
|
*branch = 0;
|
|
*ancestor = 0;
|
|
*tag = 0;
|
|
loglen = 0;
|
|
|
|
initial_commit = 0;
|
|
}
|
|
|
|
static void update_file(char *line)
|
|
{
|
|
char *name, *version;
|
|
char *dir;
|
|
|
|
while (isspace(*line))
|
|
line++;
|
|
name = line;
|
|
line = strchr(line, ':');
|
|
if (!line)
|
|
return;
|
|
*line++ = 0;
|
|
line = strchr(line, '>');
|
|
if (!line)
|
|
return;
|
|
*line++ = 0;
|
|
version = line;
|
|
line = strchr(line, '(');
|
|
if (line) { /* "(DEAD)" */
|
|
printf("git-update-cache --force-remove '%s'\n", name);
|
|
return;
|
|
}
|
|
|
|
dir = strrchr(name, '/');
|
|
if (dir)
|
|
printf("mkdir -p %.*s\n", (int)(dir - name), 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);
|
|
}
|
|
|
|
struct hdrentry {
|
|
const char *name;
|
|
char *dest;
|
|
} hdrs[] = {
|
|
{ "Date:", date },
|
|
{ "Author:", author },
|
|
{ "Branch:", branch },
|
|
{ "Ancestor branch:", ancestor },
|
|
{ "Tag:", tag },
|
|
{ "Log:", NULL },
|
|
{ NULL, NULL }
|
|
};
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
static char line[1000];
|
|
enum state state = Header;
|
|
int i;
|
|
|
|
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);
|
|
}
|
|
|
|
printf("[ -d .git ] && exit 1\n");
|
|
printf("git-init-db\n");
|
|
printf("mkdir -p .git/refs/heads\n");
|
|
printf("mkdir -p .git/refs/tags\n");
|
|
printf("ln -sf refs/heads/master .git/HEAD\n");
|
|
|
|
while (fgets(line, sizeof(line), stdin) != NULL) {
|
|
int linelen = strlen(line);
|
|
|
|
while (linelen && isspace(line[linelen-1]))
|
|
line[--linelen] = 0;
|
|
|
|
switch (state) {
|
|
struct hdrentry *entry;
|
|
|
|
case Header:
|
|
if (verbose)
|
|
printf("# H: %s\n", line);
|
|
for (entry = hdrs ; entry->name ; entry++) {
|
|
int len = strlen(entry->name);
|
|
char *val;
|
|
|
|
if (memcmp(entry->name, line, len))
|
|
continue;
|
|
if (!entry->dest) {
|
|
state = Log;
|
|
break;
|
|
}
|
|
val = line + len;
|
|
linelen -= len;
|
|
while (isspace(*val)) {
|
|
val++;
|
|
linelen--;
|
|
}
|
|
memcpy(entry->dest, val, linelen+1);
|
|
break;
|
|
}
|
|
continue;
|
|
|
|
case Log:
|
|
if (verbose)
|
|
printf("# L: %s\n", line);
|
|
if (!strcmp(line, "Members:")) {
|
|
while (loglen && isspace(log[loglen-1]))
|
|
log[--loglen] = 0;
|
|
prepare_commit();
|
|
state = Members;
|
|
continue;
|
|
}
|
|
|
|
if (loglen + linelen + 5 > sizeof(log))
|
|
continue;
|
|
memcpy(log + loglen, line, linelen);
|
|
loglen += linelen;
|
|
log[loglen++] = '\n';
|
|
continue;
|
|
|
|
case Members:
|
|
if (verbose)
|
|
printf("# M: %s\n", line);
|
|
if (!linelen) {
|
|
commit();
|
|
state = Header;
|
|
continue;
|
|
}
|
|
update_file(line);
|
|
continue;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|