Re: [3/5] Add http-pull
On Sat, 23 Apr 2005, Petr Baudis wrote: > Dear diary, on Sat, Apr 23, 2005 at 01:00:33AM CEST, I got a letter > where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > > On Sat, 23 Apr 2005, Petr Baudis wrote: > > > > > Dear diary, on Fri, Apr 22, 2005 at 09:46:35PM CEST, I got a letter > > > where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > > > > > > Huh. Why? You just go back to history until you find a commit you > > > already have. If you did it the way as Tony described, if you have that > > > commit, you can be sure that you have everything it depends on too. > > > > But if you download 1000 files of the 1010 you need, and then your network > > goes down, you will need to download those 1000 again when it comes back, > > because you can't save them unless you have the full history. > > Why can't I? I think I can do that perfectly fine. The worst thing that > can happen is that fsck-cache will complain a bit. Not if you're using the fact that you don't have them to tell you that you still need the other 10, which is what tony's scheme would do. -Daniel *This .sig left intentionally blank* - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [3/5] Add http-pull
Dear diary, on Fri, Apr 22, 2005 at 09:46:35PM CEST, I got a letter where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > On Thu, 21 Apr 2005 [EMAIL PROTECTED] wrote: > > > On Wed, 20 Apr 2005, Brad Roberts wrote: > > > How about fetching in the inverse order. Ie, deepest parents up towards > > > current. With that method the repository is always self consistent, even > > > if not yet current. > > > > Daniel Barkalow replied: > > > You don't know the deepest parents to fetch until you've read everything > > > more recent, since the history you'd have to walk is the history you're > > > downloading. > > > > You "just" need to defer adding tree/commit objects to the repository until > > after you have inserted all objects on which they depend. That's what my > > "wget" based version does ... it's very crude, in that it loads all tree > > & commit objects into a temporary repository (.gittmp) ... since you can > > only use "cat-file" and "ls-tree" on things if they live in > > objects/xx/xxx..xxx > > The blobs can go directly into the real repo (but to be really safe you'd > > have to ensure that the whole blob had been pulled from the network before > > inserting it ... it's probably a good move to validate everything that you > > pull from the outside world too). > > The problem with this general scheme is that it means that you have to > start over if something goes wrong, rather than resuming from where you > left off (and being able to use what you got until then). Huh. Why? You just go back to history until you find a commit you already have. If you did it the way as Tony described, if you have that commit, you can be sure that you have everything it depends on too. -- Petr "Pasky" Baudis Stuff: http://pasky.or.cz/ C++: an octopus made by nailing extra legs onto a dog. -- Steve Taylor - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [3/5] Add http-pull
Dear diary, on Sat, Apr 23, 2005 at 01:00:33AM CEST, I got a letter where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > On Sat, 23 Apr 2005, Petr Baudis wrote: > > > Dear diary, on Fri, Apr 22, 2005 at 09:46:35PM CEST, I got a letter > > where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > > > > Huh. Why? You just go back to history until you find a commit you > > already have. If you did it the way as Tony described, if you have that > > commit, you can be sure that you have everything it depends on too. > > But if you download 1000 files of the 1010 you need, and then your network > goes down, you will need to download those 1000 again when it comes back, > because you can't save them unless you have the full history. Why can't I? I think I can do that perfectly fine. The worst thing that can happen is that fsck-cache will complain a bit. -- Petr "Pasky" Baudis Stuff: http://pasky.or.cz/ C++: an octopus made by nailing extra legs onto a dog. -- Steve Taylor - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [3/5] Add http-pull
>But if you download 1000 files of the 1010 you need, and then your network
>goes down, you will need to download those 1000 again when it comes back,
>because you can't save them unless you have the full history.
So you could make the temporary object repository persistant between pulls
to avoid reloading them across the wire. Something like:
get_commit(sha1)
{
if (sha1 in real_repo) -> done
if (!(sha1 in tmp_repo))
load sha1 to tmp_repo
get_tree(sha1->tree)
for each parent
get_commit(sha1->parent)
move sha1 from tmp_repo to real_repo
}
get_tree(sha1)
{
if (sha1 in real_repo) -> done
if (!(sha1 in tmp_repo))
load sha1 to tmp repo
for_each (sha1->entry) {
case blob: if (!sha1 in real_repo) load to real_repo
case tree: get_tree()
}
move sha1 from tmp_repo to real_repo
}
The "load sha1 to xxx_repo" needs to be smarter than my dumb wget
based script ... it must confirm the sha1 of the object being loaded
before installing (even into the tmp_repo).
-Tony
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Re: [3/5] Add http-pull
On Fri, 2005-04-22 at 19:12 -0400, Daniel Barkalow wrote: > On Sat, 23 Apr 2005, Petr Baudis wrote: > > > Dear diary, on Sat, Apr 23, 2005 at 01:00:33AM CEST, I got a letter > > where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > > > On Sat, 23 Apr 2005, Petr Baudis wrote: > > > > > > > Dear diary, on Fri, Apr 22, 2005 at 09:46:35PM CEST, I got a letter > > > > where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > > > > > > > > Huh. Why? You just go back to history until you find a commit you > > > > already have. If you did it the way as Tony described, if you have that > > > > commit, you can be sure that you have everything it depends on too. > > > > > > But if you download 1000 files of the 1010 you need, and then your network > > > goes down, you will need to download those 1000 again when it comes back, > > > because you can't save them unless you have the full history. > > > > Why can't I? I think I can do that perfectly fine. The worst thing that > > can happen is that fsck-cache will complain a bit. > > Not if you're using the fact that you don't have them to tell you that you > still need the other 10, which is what tony's scheme would do. > Any way (like maybe extending one of the web interfaces already around) to first get a list of all the sha1's you need, and then starting from the bottom like Tony/Petr wants you to do? -- Martin Schlemmer signature.asc Description: This is a digitally signed message part
Re: [3/5] Add http-pull
On Wed, 20 Apr 2005, Brad Roberts wrote: > How about fetching in the inverse order. Ie, deepest parents up towards > current. With that method the repository is always self consistent, even > if not yet current. Daniel Barkalow replied: > You don't know the deepest parents to fetch until you've read everything > more recent, since the history you'd have to walk is the history you're > downloading. You "just" need to defer adding tree/commit objects to the repository until after you have inserted all objects on which they depend. That's what my "wget" based version does ... it's very crude, in that it loads all tree & commit objects into a temporary repository (.gittmp) ... since you can only use "cat-file" and "ls-tree" on things if they live in objects/xx/xxx..xxx The blobs can go directly into the real repo (but to be really safe you'd have to ensure that the whole blob had been pulled from the network before inserting it ... it's probably a good move to validate everything that you pull from the outside world too). -Tony - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [3/5] Add http-pull
On Wed, 20 Apr 2005, Brad Roberts wrote: > How about fetching in the inverse order. Ie, deepest parents up towards > current. With that method the repository is always self consistent, even > if not yet current. You don't know the deepest parents to fetch until you've read everything more recent, since the history you'd have to walk is the history you're downloading. -Daniel *This .sig left intentionally blank* - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [3/5] Add http-pull
On Sun, 17 Apr 2005, Petr Baudis wrote: > Date: Sun, 17 Apr 2005 21:59:00 +0200 > From: Petr Baudis <[EMAIL PROTECTED]> > To: Daniel Barkalow <[EMAIL PROTECTED]> > Cc: git@vger.kernel.org > Subject: Re: [3/5] Add http-pull > > Dear diary, on Sun, Apr 17, 2005 at 09:24:27PM CEST, I got a letter > where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > > On Sun, 17 Apr 2005, Petr Baudis wrote: > > > > > Dear diary, on Sun, Apr 17, 2005 at 08:49:11PM CEST, I got a letter > > > where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > > > > There's some trickiness for the history of commits thing for stopping at > > > > the point where you have everything, but also behaving appropriately if > > > > you try once, fail partway through, and then try again. It's on my queue > > > > of things to think about. > > > > > > Can't you just stop the recursion when you hit a commit you already > > > have? > > > > The problem is that, if you've fetched the final commit already, and then > > the server dies, and you try again later, you already have the last one, > > and so you think you've got everything. > > Hmm, some kind of journaling? ;-) How about fetching in the inverse order. Ie, deepest parents up towards current. With that method the repository is always self consistent, even if not yet current. Later, Brad - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [3/5] Add http-pull
Dear diary, on Sun, Apr 17, 2005 at 09:24:27PM CEST, I got a letter where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > On Sun, 17 Apr 2005, Petr Baudis wrote: > > > Dear diary, on Sun, Apr 17, 2005 at 08:49:11PM CEST, I got a letter > > where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > > > There's some trickiness for the history of commits thing for stopping at > > > the point where you have everything, but also behaving appropriately if > > > you try once, fail partway through, and then try again. It's on my queue > > > of things to think about. > > > > Can't you just stop the recursion when you hit a commit you already > > have? > > The problem is that, if you've fetched the final commit already, and then > the server dies, and you try again later, you already have the last one, > and so you think you've got everything. Hmm, some kind of journaling? ;-) > At this point, I also want to put off doing much further with recursion > and commits until revision.h and such are sorted out. Agreed. -- Petr "Pasky" Baudis Stuff: http://pasky.or.cz/ C++: an octopus made by nailing extra legs onto a dog. -- Steve Taylor - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [3/5] Add http-pull
On Sun, 17 Apr 2005, Petr Baudis wrote: > Dear diary, on Sun, Apr 17, 2005 at 08:49:11PM CEST, I got a letter > where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > > I'm not too kind at this. Either make it totally separate commands, or > make a required switch specifying what to do. Otherwise it implies the > switches would just modify what it does, but they make it do something > completely different. That's a good point. I'll require a -t for now, and add more later. > -a would be fine too - basically a combination of -c and -t. I'd imagine > that is what Linus would want to use, e.g. Well, -c -t would give you the current tree and the whole commit log, but not old trees. -a would additionally give you old trees. > > There's some trickiness for the history of commits thing for stopping at > > the point where you have everything, but also behaving appropriately if > > you try once, fail partway through, and then try again. It's on my queue > > of things to think about. > > Can't you just stop the recursion when you hit a commit you already > have? The problem is that, if you've fetched the final commit already, and then the server dies, and you try again later, you already have the last one, and so you think you've got everything. At this point, I also want to put off doing much further with recursion and commits until revision.h and such are sorted out. -Daniel *This .sig left intentionally blank* - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [3/5] Add http-pull
Dear diary, on Sun, Apr 17, 2005 at 08:49:11PM CEST, I got a letter where Daniel Barkalow <[EMAIL PROTECTED]> told me that... > On Sun, 17 Apr 2005, Petr Baudis wrote: > > > Index: http-pull.c > > > === > > > --- /dev/null (tree:d662b707e11391f6cfe597fd4d0bf9c41d34d01a) > > > +++ 157b46ce1d82b3579e2e1258927b0d9bdbc033ab/http-pull.c (mode:100644 > > > sha1:106ca31239e6afe6784e7c592234406f5c149e44) > > > + url = malloc(strlen(base) + 50); > > > > Off-by-one. What about the trailing NUL? > > I get length(base) + "object/"=8 + 40 SHA1 + 1 for '/' and 1 for NUL = 50. Sorry, counted one '/' more. :-) > > I think you should have at least two disjunct modes - either you are > > downloading everything related to the given commit, or you are > > downloading all commit records for commit predecessors. > > > > Even if you might not want all the intermediate trees, you definitively > > want the intermediate commits, to keep the history graph contignuous. > > > > So in git pull, I'd imagine to do > > > > http-pull -c $new_head > > http-pull -t $(tree-id $new_head) > > > > So, -c would fetch a given commit and all its predecessors until it hits > > what you already have on your side. -t would fetch a given tree with all > > files and subtrees and everything. http-pull shouldn't default on > > either, since they are mutually exclusive. > > > > What do you think? > > I think I'd rather keep the current behavior and add a -c for getting the > history of commits, and maybe a -a for getting the history of commits and > their tress. I'm not too kind at this. Either make it totally separate commands, or make a required switch specifying what to do. Otherwise it implies the switches would just modify what it does, but they make it do something completely different. -a would be fine too - basically a combination of -c and -t. I'd imagine that is what Linus would want to use, e.g. > There's some trickiness for the history of commits thing for stopping at > the point where you have everything, but also behaving appropriately if > you try once, fail partway through, and then try again. It's on my queue > of things to think about. Can't you just stop the recursion when you hit a commit you already have? -- Petr "Pasky" Baudis Stuff: http://pasky.or.cz/ C++: an octopus made by nailing extra legs onto a dog. -- Steve Taylor - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [3/5] Add http-pull
On Sun, 17 Apr 2005, Petr Baudis wrote: > > Index: Makefile > > === > > --- d662b707e11391f6cfe597fd4d0bf9c41d34d01a/Makefile (mode:100644 > > sha1:b2ce7c5b63fffca59653b980d98379909f893d44) > > +++ 157b46ce1d82b3579e2e1258927b0d9bdbc033ab/Makefile (mode:100644 > > sha1:940ef8578cf469354002cd8feaec25d907015267) > > @@ -35,6 +35,7 @@ > > > > LIBS= -lssl -lz > > > > +http-pull: LIBS += -lcurl > > > > $(PROG):%: %.o $(COMMON) > > $(CC) $(CFLAGS) -o $@ $^ $(LIBS) > > Whew. Looks like an awful trick, you say this works?! :-) > > At times, I wouldn't want to be a GNU make parser. Yup. GNU make is big on the features which do the obvious thing, even when you can't believe they work. This is probably why nobody's managed to replace it. > > Index: http-pull.c > > === > > --- /dev/null (tree:d662b707e11391f6cfe597fd4d0bf9c41d34d01a) > > +++ 157b46ce1d82b3579e2e1258927b0d9bdbc033ab/http-pull.c (mode:100644 > > sha1:106ca31239e6afe6784e7c592234406f5c149e44) > > + url = malloc(strlen(base) + 50); > > Off-by-one. What about the trailing NUL? I get length(base) + "object/"=8 + 40 SHA1 + 1 for '/' and 1 for NUL = 50. > I think you should have at least two disjunct modes - either you are > downloading everything related to the given commit, or you are > downloading all commit records for commit predecessors. > > Even if you might not want all the intermediate trees, you definitively > want the intermediate commits, to keep the history graph contignuous. > > So in git pull, I'd imagine to do > > http-pull -c $new_head > http-pull -t $(tree-id $new_head) > > So, -c would fetch a given commit and all its predecessors until it hits > what you already have on your side. -t would fetch a given tree with all > files and subtrees and everything. http-pull shouldn't default on > either, since they are mutually exclusive. > > What do you think? I think I'd rather keep the current behavior and add a -c for getting the history of commits, and maybe a -a for getting the history of commits and their tress. There's some trickiness for the history of commits thing for stopping at the point where you have everything, but also behaving appropriately if you try once, fail partway through, and then try again. It's on my queue of things to think about. -Daniel *This .sig left intentionally blank* - To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [3/5] Add http-pull
Dear diary, on Sun, Apr 17, 2005 at 05:31:16PM CEST, I got a letter
where Daniel Barkalow <[EMAIL PROTECTED]> told me that...
> http-pull is a program that downloads from a (normal) HTTP server a commit
> and all of the tree and blob objects it refers to (but not other commits,
> etc.). Options could be used to make it download a larger or different
> selection of objects. It depends on libcurl, which I forgot to mention in
> the README again.
>
> Signed-Off-By: Daniel Barkalow <[EMAIL PROTECTED]>
So, while you will be resending the patch, please update the README.
> Index: Makefile
> ===
> --- d662b707e11391f6cfe597fd4d0bf9c41d34d01a/Makefile (mode:100644
> sha1:b2ce7c5b63fffca59653b980d98379909f893d44)
> +++ 157b46ce1d82b3579e2e1258927b0d9bdbc033ab/Makefile (mode:100644
> sha1:940ef8578cf469354002cd8feaec25d907015267)
> @@ -35,6 +35,7 @@
>
> LIBS= -lssl -lz
>
> +http-pull: LIBS += -lcurl
>
> $(PROG):%: %.o $(COMMON)
> $(CC) $(CFLAGS) -o $@ $^ $(LIBS)
Whew. Looks like an awful trick, you say this works?! :-)
At times, I wouldn't want to be a GNU make parser.
> Index: http-pull.c
> ===
> --- /dev/null (tree:d662b707e11391f6cfe597fd4d0bf9c41d34d01a)
> +++ 157b46ce1d82b3579e2e1258927b0d9bdbc033ab/http-pull.c (mode:100644
> sha1:106ca31239e6afe6784e7c592234406f5c149e44)
> @@ -0,0 +1,126 @@
> + if (!stat(filename, &st)) {
> + return 0;
> + }
access()
> + url = malloc(strlen(base) + 50);
Off-by-one. What about the trailing NUL?
> + strcpy(url, base);
> + posn = url + strlen(base);
> + strcpy(posn, "objects/");
> + posn += 8;
> + memcpy(posn, hex, 2);
> + posn += 2;
> + *(posn++) = '/';
> + strcpy(posn, hex + 2);
> +static int process_tree(unsigned char *sha1)
> +{
> + void *buffer;
> +unsigned long size;
> +char type[20];
> +
> +buffer = read_sha1_file(sha1, type, &size);
Something with your whitespaces is wrong here. ;-)
> + fetch(rev->tree);
> + process_tree(rev->tree);
> + fetch(sha1);
> + process_commit(sha1);
You are ignoring return codes of own routines everywhere.
You should use error() instead of plain -1, BTW.
I think you should have at least two disjunct modes - either you are
downloading everything related to the given commit, or you are
downloading all commit records for commit predecessors.
Even if you might not want all the intermediate trees, you definitively
want the intermediate commits, to keep the history graph contignuous.
So in git pull, I'd imagine to do
http-pull -c $new_head
http-pull -t $(tree-id $new_head)
So, -c would fetch a given commit and all its predecessors until it hits
what you already have on your side. -t would fetch a given tree with all
files and subtrees and everything. http-pull shouldn't default on
either, since they are mutually exclusive.
What do you think?
--
Petr "Pasky" Baudis
Stuff: http://pasky.or.cz/
C++: an octopus made by nailing extra legs onto a dog. -- Steve Taylor
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[3/5] Add http-pull
http-pull is a program that downloads from a (normal) HTTP server a commit
and all of the tree and blob objects it refers to (but not other commits,
etc.). Options could be used to make it download a larger or different
selection of objects. It depends on libcurl, which I forgot to mention in
the README again.
Signed-Off-By: Daniel Barkalow <[EMAIL PROTECTED]>
Index: Makefile
===
--- d662b707e11391f6cfe597fd4d0bf9c41d34d01a/Makefile (mode:100644
sha1:b2ce7c5b63fffca59653b980d98379909f893d44)
+++ 157b46ce1d82b3579e2e1258927b0d9bdbc033ab/Makefile (mode:100644
sha1:940ef8578cf469354002cd8feaec25d907015267)
@@ -14,7 +14,7 @@
PROG= update-cache show-diff init-db write-tree read-tree commit-tree \
cat-file fsck-cache checkout-cache diff-tree rev-tree show-files \
- check-files ls-tree merge-base
+ check-files ls-tree http-pull merge-base
SCRIPT=parent-id tree-id git gitXnormid.sh gitadd.sh gitaddremote.sh \
gitcommit.sh gitdiff-do gitdiff.sh gitlog.sh gitls.sh gitlsobj.sh \
@@ -35,6 +35,7 @@
LIBS= -lssl -lz
+http-pull: LIBS += -lcurl
$(PROG):%: %.o $(COMMON)
$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
Index: http-pull.c
===
--- /dev/null (tree:d662b707e11391f6cfe597fd4d0bf9c41d34d01a)
+++ 157b46ce1d82b3579e2e1258927b0d9bdbc033ab/http-pull.c (mode:100644
sha1:106ca31239e6afe6784e7c592234406f5c149e44)
@@ -0,0 +1,126 @@
+#include
+#include
+#include
+#include
+#include "cache.h"
+#include "revision.h"
+#include
+#include
+
+#include
+#include
+
+static CURL *curl;
+
+static char *base;
+
+static int fetch(unsigned char *sha1)
+{
+ char *hex = sha1_to_hex(sha1);
+ char *filename = sha1_file_name(sha1);
+
+ char *url;
+ char *posn;
+ FILE *local;
+ struct stat st;
+
+ if (!stat(filename, &st)) {
+ return 0;
+ }
+
+ local = fopen(filename, "w");
+
+ if (!local) {
+ fprintf(stderr, "Couldn't open %s\n", filename);
+ return -1;
+ }
+
+ curl_easy_setopt(curl, CURLOPT_FILE, local);
+
+ url = malloc(strlen(base) + 50);
+ strcpy(url, base);
+ posn = url + strlen(base);
+ strcpy(posn, "objects/");
+ posn += 8;
+ memcpy(posn, hex, 2);
+ posn += 2;
+ *(posn++) = '/';
+ strcpy(posn, hex + 2);
+
+ curl_easy_setopt(curl, CURLOPT_URL, url);
+
+ curl_easy_perform(curl);
+
+ fclose(local);
+
+ return 0;
+}
+
+static int process_tree(unsigned char *sha1)
+{
+ void *buffer;
+unsigned long size;
+char type[20];
+
+buffer = read_sha1_file(sha1, type, &size);
+ if (!buffer)
+ return -1;
+ if (strcmp(type, "tree"))
+ return -1;
+ while (size) {
+ int len = strlen(buffer) + 1;
+ unsigned char *sha1 = buffer + len;
+ unsigned int mode;
+ int retval;
+
+ if (size < len + 20 || sscanf(buffer, "%o", &mode) != 1)
+ return -1;
+
+ buffer = sha1 + 20;
+ size -= len + 20;
+
+ retval = fetch(sha1);
+ if (retval)
+ return -1;
+
+ if (S_ISDIR(mode)) {
+ retval = process_tree(sha1);
+ if (retval)
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static int process_commit(unsigned char *sha1)
+{
+ struct revision *rev = lookup_rev(sha1);
+ if (parse_commit_object(rev))
+ return -1;
+
+ fetch(rev->tree);
+ process_tree(rev->tree);
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ char *commit_id = argv[1];
+ char *url = argv[2];
+
+ unsigned char sha1[20];
+
+ get_sha1_hex(commit_id, sha1);
+
+ curl_global_init(CURL_GLOBAL_ALL);
+
+ curl = curl_easy_init();
+
+ base = url;
+
+ fetch(sha1);
+ process_commit(sha1);
+
+ curl_global_cleanup();
+ return 0;
+}
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