undef/git-commit-vandalism
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Modularize commit-walker

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This turns the extern functions to be provided by the backend into a
struct of pointers, renames the functions to be more
namespace-friendly, and updates http-fetch to this interface. It
removes the unused include from http-push.c. It makes git-http-fetch a
builtin (with the implementation a separate file, accessible
directly).

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Daniel Barkalow 2007-09-10 23:02:45 -04:00 committed by Junio C Hamano
parent fbdeef948b
commit 30ae764b1e
9 changed files with 271 additions and 230 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
Makefile
View File

@ -514,7 +514,9 @@ else
CC_LD_DYNPATH = -R
endif
ifndef NO_CURL
ifdef NO_CURL
BASIC_CFLAGS += -DNO_CURL
else
ifdef CURLDIR
# Try "-Wl,-rpath=$(CURLDIR)/$(lib)" in such a case.
BASIC_CFLAGS += -I$(CURLDIR)/include
@ -522,7 +524,9 @@ ifndef NO_CURL
else
CURL_LIBCURL = -lcurl
endif
PROGRAMS += git-http-fetch$X
BUILTIN_OBJS += builtin-http-fetch.o
EXTLIBS += $(CURL_LIBCURL)
LIB_OBJS += http.o walker.o http-walker.o
curl_check := $(shell (echo 070908; curl-config --vernum) | sort -r | sed -ne 2p)
ifeq "$(curl_check)" "070908"
ifndef NO_EXPAT
@ -884,7 +888,7 @@ http.o: http.c GIT-CFLAGS
$(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) -DGIT_USER_AGENT='"git/$(GIT_VERSION)"' $<
ifdef NO_EXPAT
http-fetch.o: http-fetch.c http.h GIT-CFLAGS
http-walker.o: http-walker.c http.h GIT-CFLAGS
$(QUIET_CC)$(CC) -o $*.o -c $(ALL_CFLAGS) -DNO_EXPAT $<
endif
@ -893,16 +897,13 @@ git-%$X: %.o $(GITLIBS)
git-imap-send$X: imap-send.o $(LIB_FILE)
http.o http-fetch.o http-push.o: http.h
git-http-fetch$X: fetch.o http.o http-fetch.o $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
$(LIBS) $(CURL_LIBCURL) $(EXPAT_LIBEXPAT)
http.o http-walker.o http-push.o: http.h
git-http-push$X: revision.o http.o http-push.o $(GITLIBS)
$(QUIET_LINK)$(CC) $(ALL_CFLAGS) -o $@ $(ALL_LDFLAGS) $(filter %.o,$^) \
$(LIBS) $(CURL_LIBCURL) $(EXPAT_LIBEXPAT)
$(LIB_OBJS) $(BUILTIN_OBJS) fetch.o: $(LIB_H)
$(LIB_OBJS) $(BUILTIN_OBJS) walker.o: $(LIB_H)
$(patsubst git-%$X,%.o,$(PROGRAMS)): $(LIB_H) $(wildcard */*.h)
$(DIFF_OBJS): diffcore.h

77
builtin-http-fetch.c Normal file
View File

@ -0,0 +1,77 @@
#include "cache.h"
#include "walker.h"
int cmd_http_fetch(int argc, const char **argv, const char *prefix)
{
struct walker *walker;
int commits_on_stdin = 0;
int commits;
const char **write_ref = NULL;
char **commit_id;
const char *url;
int arg = 1;
int rc = 0;
int get_tree = 0;
int get_history = 0;
int get_all = 0;
int get_verbosely = 0;
int get_recover = 0;
git_config(git_default_config);
while (arg < argc && argv[arg][0] == '-') {
if (argv[arg][1] == 't') {
get_tree = 1;
} else if (argv[arg][1] == 'c') {
get_history = 1;
} else if (argv[arg][1] == 'a') {
get_all = 1;
get_tree = 1;
get_history = 1;
} else if (argv[arg][1] == 'v') {
get_verbosely = 1;
} else if (argv[arg][1] == 'w') {
write_ref = &argv[arg + 1];
arg++;
} else if (!strcmp(argv[arg], "--recover")) {
get_recover = 1;
} else if (!strcmp(argv[arg], "--stdin")) {
commits_on_stdin = 1;
}
arg++;
}
if (argc < arg + 2 - commits_on_stdin) {
usage("git-http-fetch [-c] [-t] [-a] [-v] [--recover] [-w ref] [--stdin] commit-id url");
return 1;
}
if (commits_on_stdin) {
commits = walker_targets_stdin(&commit_id, &write_ref);
} else {
commit_id = (char **) &argv[arg++];
commits = 1;
}
url = argv[arg];
walker = get_http_walker(url);
walker->get_tree = get_tree;
walker->get_history = get_history;
walker->get_all = get_all;
walker->get_verbosely = get_verbosely;
walker->get_recover = get_recover;
rc = walker_fetch(walker, commits, commit_id, write_ref, url);
if (commits_on_stdin)
walker_targets_free(commits, commit_id, write_ref);
if (walker->corrupt_object_found) {
fprintf(stderr,
"Some loose object were found to be corrupt, but they might be just\n"
"a false '404 Not Found' error message sent with incorrect HTTP\n"
"status code. Suggest running git-fsck.\n");
}
walker_free(walker);
return rc;
}

1
builtin.h
View File

@ -40,6 +40,7 @@ extern int cmd_gc(int argc, const char **argv, const char *prefix);
extern int cmd_get_tar_commit_id(int argc, const char **argv, const char *prefix);
extern int cmd_grep(int argc, const char **argv, const char *prefix);
extern int cmd_help(int argc, const char **argv, const char *prefix);
extern int cmd_http_fetch(int argc, const char **argv, const char *prefix);
extern int cmd_init_db(int argc, const char **argv, const char *prefix);
extern int cmd_log(int argc, const char **argv, const char *prefix);
extern int cmd_log_reflog(int argc, const char **argv, const char *prefix);

54
fetch.h
View File

@ -1,54 +0,0 @@
#ifndef PULL_H
#define PULL_H
/*
* Fetch object given SHA1 from the remote, and store it locally under
* GIT_OBJECT_DIRECTORY. Return 0 on success, -1 on failure. To be
* provided by the particular implementation.
*/
extern int fetch(unsigned char *sha1);
/*
* Fetch the specified object and store it locally; fetch() will be
* called later to determine success. To be provided by the particular
* implementation.
*/
extern void prefetch(unsigned char *sha1);
/*
* Fetch ref (relative to $GIT_DIR/refs) from the remote, and store
* the 20-byte SHA1 in sha1. Return 0 on success, -1 on failure. To
* be provided by the particular implementation.
*/
extern int fetch_ref(char *ref, unsigned char *sha1);
/* Set to fetch the target tree. */
extern int get_tree;
/* Set to fetch the commit history. */
extern int get_history;
/* Set to fetch the trees in the commit history. */
extern int get_all;
/* Set to be verbose */
extern int get_verbosely;
/* Set to check on all reachable objects. */
extern int get_recover;
/* Report what we got under get_verbosely */
extern void pull_say(const char *, const char *);
/* Load pull targets from stdin */
extern int pull_targets_stdin(char ***target, const char ***write_ref);
/* Free up loaded targets */
extern void pull_targets_free(int targets, char **target, const char **write_ref);
/* If write_ref is set, the ref filename to write the target value to. */
/* If write_ref_log_details is set, additional text will appear in the ref log. */
extern int pull(int targets, char **target, const char **write_ref,
const char *write_ref_log_details);
#endif /* PULL_H */

3
git.c
View File

@ -344,6 +344,9 @@ static void handle_internal_command(int argc, const char **argv)
{ "get-tar-commit-id", cmd_get_tar_commit_id },
{ "grep", cmd_grep, RUN_SETUP | USE_PAGER },
{ "help", cmd_help },
#ifndef NO_CURL
{ "http-fetch", cmd_http_fetch, RUN_SETUP },
#endif
{ "init", cmd_init_db },
{ "init-db", cmd_init_db },
{ "log", cmd_log, RUN_SETUP | USE_PAGER },

1
http-push.c
View File

@ -1,7 +1,6 @@
#include "cache.h"
#include "commit.h"
#include "pack.h"
#include "fetch.h"
#include "tag.h"
#include "blob.h"
#include "http.h"

228
http-fetch.c → http-walker.c
View File

@ -1,19 +1,12 @@
#include "cache.h"
#include "commit.h"
#include "pack.h"
#include "fetch.h"
#include "walker.h"
#include "http.h"
#define PREV_BUF_SIZE 4096
#define RANGE_HEADER_SIZE 30
static int commits_on_stdin;
static int got_alternates = -1;
static int corrupt_object_found;
static struct curl_slist *no_pragma_header;
struct alt_base
{
char *base;
@ -22,8 +15,6 @@ struct alt_base
struct alt_base *next;
};
static struct alt_base *alt;
enum object_request_state {
WAITING,
ABORTED,
@ -33,6 +24,7 @@ enum object_request_state {
struct object_request
{
struct walker *walker;
unsigned char sha1[20];
struct alt_base *repo;
char *url;
@ -53,6 +45,7 @@ struct object_request
};
struct alternates_request {
struct walker *walker;
const char *base;
char *url;
struct buffer *buffer;
@ -60,6 +53,13 @@ struct alternates_request {
int http_specific;
};
struct walker_data {
const char *url;
int got_alternates;
struct alt_base *alt;
struct curl_slist *no_pragma_header;
};
static struct object_request *object_queue_head;
static size_t fwrite_sha1_file(void *ptr, size_t eltsize, size_t nmemb,
@ -103,11 +103,12 @@ static int missing__target(int code, int result)
#define missing_target(a) missing__target((a)->http_code, (a)->curl_result)
static void fetch_alternates(const char *base);
static void fetch_alternates(struct walker *walker, const char *base);
static void process_object_response(void *callback_data);
static void start_object_request(struct object_request *obj_req)
static void start_object_request(struct walker *walker,
struct object_request *obj_req)
{
char *hex = sha1_to_hex(obj_req->sha1);
char prevfile[PATH_MAX];
@ -120,6 +121,7 @@ static void start_object_request(struct object_request *obj_req)
char range[RANGE_HEADER_SIZE];
struct curl_slist *range_header = NULL;
struct active_request_slot *slot;
struct walker_data *data = walker->data;
snprintf(prevfile, sizeof(prevfile), "%s.prev", obj_req->filename);
unlink(prevfile);
@ -212,12 +214,12 @@ static void start_object_request(struct object_request *obj_req)
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_sha1_file);
curl_easy_setopt(slot->curl, CURLOPT_ERRORBUFFER, obj_req->errorstr);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, data->no_pragma_header);
/* If we have successfully processed data from a previous fetch
attempt, only fetch the data we don't already have. */
if (prev_posn>0) {
if (get_verbosely)
if (walker->get_verbosely)
fprintf(stderr,
"Resuming fetch of object %s at byte %ld\n",
hex, prev_posn);
@ -268,13 +270,16 @@ static void finish_object_request(struct object_request *obj_req)
move_temp_to_file(obj_req->tmpfile, obj_req->filename);
if (obj_req->rename == 0)
pull_say("got %s\n", sha1_to_hex(obj_req->sha1));
walker_say(obj_req->walker, "got %s\n", sha1_to_hex(obj_req->sha1));
}
static void process_object_response(void *callback_data)
{
struct object_request *obj_req =
(struct object_request *)callback_data;
struct walker *walker = obj_req->walker;
struct walker_data *data = walker->data;
struct alt_base *alt = data->alt;
obj_req->curl_result = obj_req->slot->curl_result;
obj_req->http_code = obj_req->slot->http_code;
@ -283,13 +288,13 @@ static void process_object_response(void *callback_data)
/* Use alternates if necessary */
if (missing_target(obj_req)) {
fetch_alternates(alt->base);
fetch_alternates(walker, alt->base);
if (obj_req->repo->next != NULL) {
obj_req->repo =
obj_req->repo->next;
close(obj_req->local);
obj_req->local = -1;
start_object_request(obj_req);
start_object_request(walker, obj_req);
return;
}
}
@ -317,7 +322,7 @@ static void release_object_request(struct object_request *obj_req)
}
#ifdef USE_CURL_MULTI
static int fill_active_slot(void *unused)
static int fill_active_slot(struct walker *walker)
{
struct object_request *obj_req;
@ -326,7 +331,7 @@ static int fill_active_slot(void *unused)
if (has_sha1_file(obj_req->sha1))
obj_req->state = COMPLETE;
else {
start_object_request(obj_req);
start_object_request(walker, obj_req);
return 1;
}
}
@ -335,15 +340,17 @@ static int fill_active_slot(void *unused)
}
#endif
void prefetch(unsigned char *sha1)
static void prefetch(struct walker *walker, unsigned char *sha1)
{
struct object_request *newreq;
struct object_request *tail;
struct walker_data *data = walker->data;
char *filename = sha1_file_name(sha1);
newreq = xmalloc(sizeof(*newreq));
newreq->walker = walker;
hashcpy(newreq->sha1, sha1);
newreq->repo = alt;
newreq->repo = data->alt;
newreq->url = NULL;
newreq->local = -1;
newreq->state = WAITING;
@ -369,7 +376,7 @@ void prefetch(unsigned char *sha1)
#endif
}
static int fetch_index(struct alt_base *repo, unsigned char *sha1)
static int fetch_index(struct walker *walker, struct alt_base *repo, unsigned char *sha1)
{
char *hex = sha1_to_hex(sha1);
char *filename;
@ -378,6 +385,7 @@ static int fetch_index(struct alt_base *repo, unsigned char *sha1)
long prev_posn = 0;
char range[RANGE_HEADER_SIZE];
struct curl_slist *range_header = NULL;
struct walker_data *data = walker->data;
FILE *indexfile;
struct active_request_slot *slot;
@ -386,7 +394,7 @@ static int fetch_index(struct alt_base *repo, unsigned char *sha1)
if (has_pack_index(sha1))
return 0;
if (get_verbosely)
if (walker->get_verbosely)
fprintf(stderr, "Getting index for pack %s\n", hex);
url = xmalloc(strlen(repo->base) + 64);
@ -404,14 +412,14 @@ static int fetch_index(struct alt_base *repo, unsigned char *sha1)
curl_easy_setopt(slot->curl, CURLOPT_FILE, indexfile);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, data->no_pragma_header);
slot->local = indexfile;
/* If there is data present from a previous transfer attempt,
resume where it left off */
prev_posn = ftell(indexfile);
if (prev_posn>0) {
if (get_verbosely)
if (walker->get_verbosely)
fprintf(stderr,
"Resuming fetch of index for pack %s at byte %ld\n",
hex, prev_posn);
@ -437,13 +445,13 @@ static int fetch_index(struct alt_base *repo, unsigned char *sha1)
return move_temp_to_file(tmpfile, filename);
}
static int setup_index(struct alt_base *repo, unsigned char *sha1)
static int setup_index(struct walker *walker, struct alt_base *repo, unsigned char *sha1)
{
struct packed_git *new_pack;
if (has_pack_file(sha1))
return 0; /* don't list this as something we can get */
if (fetch_index(repo, sha1))
if (fetch_index(walker, repo, sha1))
return -1;
new_pack = parse_pack_index(sha1);
@ -456,8 +464,10 @@ static void process_alternates_response(void *callback_data)
{
struct alternates_request *alt_req =
(struct alternates_request *)callback_data;
struct walker *walker = alt_req->walker;
struct walker_data *cdata = walker->data;
struct active_request_slot *slot = alt_req->slot;
struct alt_base *tail = alt;
struct alt_base *tail = cdata->alt;
const char *base = alt_req->base;
static const char null_byte = '\0';
char *data;
@ -478,7 +488,7 @@ static void process_alternates_response(void *callback_data)
if (slot->finished != NULL)
(*slot->finished) = 0;
if (!start_active_slot(slot)) {
got_alternates = -1;
cdata->got_alternates = -1;
slot->in_use = 0;
if (slot->finished != NULL)
(*slot->finished) = 1;
@ -487,7 +497,7 @@ static void process_alternates_response(void *callback_data)
}
} else if (slot->curl_result != CURLE_OK) {
if (!missing_target(slot)) {
got_alternates = -1;
cdata->got_alternates = -1;
return;
}
}
@ -564,7 +574,7 @@ static void process_alternates_response(void *callback_data)
memcpy(target + serverlen, data + i,
posn - i - 7);
target[serverlen + posn - i - 7] = 0;
if (get_verbosely)
if (walker->get_verbosely)
fprintf(stderr,
"Also look at %s\n", target);
newalt = xmalloc(sizeof(*newalt));
@ -581,39 +591,40 @@ static void process_alternates_response(void *callback_data)
i = posn + 1;
}
got_alternates = 1;
cdata->got_alternates = 1;
}
static void fetch_alternates(const char *base)
static void fetch_alternates(struct walker *walker, const char *base)
{
struct buffer buffer;
char *url;
char *data;
struct active_request_slot *slot;
struct alternates_request alt_req;
struct walker_data *cdata = walker->data;
/* If another request has already started fetching alternates,
wait for them to arrive and return to processing this request's
curl message */
#ifdef USE_CURL_MULTI
while (got_alternates == 0) {
while (cdata->got_alternates == 0) {
step_active_slots();
}
#endif
/* Nothing to do if they've already been fetched */
if (got_alternates == 1)
if (cdata->got_alternates == 1)
return;
/* Start the fetch */
got_alternates = 0;
cdata->got_alternates = 0;
data = xmalloc(4096);
buffer.size = 4096;
buffer.posn = 0;
buffer.buffer = data;
if (get_verbosely)
if (walker->get_verbosely)
fprintf(stderr, "Getting alternates list for %s\n", base);
url = xmalloc(strlen(base) + 31);
@ -623,6 +634,7 @@ static void fetch_alternates(const char *base)
may fail and need to have alternates loaded before continuing */
slot = get_active_slot();
slot->callback_func = process_alternates_response;
alt_req.walker = walker;
slot->callback_data = &alt_req;
curl_easy_setopt(slot->curl, CURLOPT_FILE, &buffer);
@ -638,13 +650,13 @@ static void fetch_alternates(const char *base)
if (start_active_slot(slot))
run_active_slot(slot);
else
got_alternates = -1;
cdata->got_alternates = -1;
free(data);
free(url);
}
static int fetch_indices(struct alt_base *repo)
static int fetch_indices(struct walker *walker, struct alt_base *repo)
{
unsigned char sha1[20];
char *url;
@ -663,7 +675,7 @@ static int fetch_indices(struct alt_base *repo)
buffer.posn = 0;
buffer.buffer = data;
if (get_verbosely)
if (walker->get_verbosely)
fprintf(stderr, "Getting pack list for %s\n", repo->base);
url = xmalloc(strlen(repo->base) + 21);
@ -703,7 +715,7 @@ static int fetch_indices(struct alt_base *repo)
!prefixcmp(data + i, " pack-") &&
!prefixcmp(data + i + 46, ".pack\n")) {
get_sha1_hex(data + i + 6, sha1);
setup_index(repo, sha1);
setup_index(walker, repo, sha1);
i += 51;
break;
}
@ -719,7 +731,7 @@ static int fetch_indices(struct alt_base *repo)
return 0;
}
static int fetch_pack(struct alt_base *repo, unsigned char *sha1)
static int fetch_pack(struct walker *walker, struct alt_base *repo, unsigned char *sha1)
{
char *url;
struct packed_git *target;
@ -731,17 +743,18 @@ static int fetch_pack(struct alt_base *repo, unsigned char *sha1)
long prev_posn = 0;
char range[RANGE_HEADER_SIZE];
struct curl_slist *range_header = NULL;
struct walker_data *data = walker->data;
struct active_request_slot *slot;
struct slot_results results;
if (fetch_indices(repo))
if (fetch_indices(walker, repo))
return -1;
target = find_sha1_pack(sha1, repo->packs);
if (!target)
return -1;
if (get_verbosely) {
if (walker->get_verbosely) {
fprintf(stderr, "Getting pack %s\n",
sha1_to_hex(target->sha1));
fprintf(stderr, " which contains %s\n",
@ -764,14 +777,14 @@ static int fetch_pack(struct alt_base *repo, unsigned char *sha1)
curl_easy_setopt(slot->curl, CURLOPT_FILE, packfile);
curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite);
curl_easy_setopt(slot->curl, CURLOPT_URL, url);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, no_pragma_header);
curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, data->no_pragma_header);
slot->local = packfile;
/* If there is data present from a previous transfer attempt,
resume where it left off */
prev_posn = ftell(packfile);
if (prev_posn>0) {
if (get_verbosely)
if (walker->get_verbosely)
fprintf(stderr,
"Resuming fetch of pack %s at byte %ld\n",
sha1_to_hex(target->sha1), prev_posn);
@ -825,7 +838,7 @@ static void abort_object_request(struct object_request *obj_req)
release_object_request(obj_req);
}
static int fetch_object(struct alt_base *repo, unsigned char *sha1)
static int fetch_object(struct walker *walker, struct alt_base *repo, unsigned char *sha1)
{
char *hex = sha1_to_hex(sha1);
int ret = 0;
@ -846,7 +859,7 @@ static int fetch_object(struct alt_base *repo, unsigned char *sha1)
step_active_slots();
}
#else
start_object_request(obj_req);
start_object_request(walker, obj_req);
#endif
while (obj_req->state == ACTIVE) {
@ -867,7 +880,7 @@ static int fetch_object(struct alt_base *repo, unsigned char *sha1)
obj_req->errorstr, obj_req->curl_result,
obj_req->http_code, hex);
} else if (obj_req->zret != Z_STREAM_END) {
corrupt_object_found++;
walker->corrupt_object_found++;
ret = error("File %s (%s) corrupt", hex, obj_req->url);
} else if (hashcmp(obj_req->sha1, obj_req->real_sha1)) {
ret = error("File %s has bad hash", hex);
@ -880,20 +893,21 @@ static int fetch_object(struct alt_base *repo, unsigned char *sha1)
return ret;
}
int fetch(unsigned char *sha1)
static int fetch(struct walker *walker, unsigned char *sha1)
{
struct alt_base *altbase = alt;
struct walker_data *data = walker->data;
struct alt_base *altbase = data->alt;
if (!fetch_object(altbase, sha1))
if (!fetch_object(walker, altbase, sha1))
return 0;
while (altbase) {
if (!fetch_pack(altbase, sha1))
if (!fetch_pack(walker, altbase, sha1))
return 0;
fetch_alternates(alt->base);
fetch_alternates(walker, data->alt->base);
altbase = altbase->next;
}
return error("Unable to find %s under %s", sha1_to_hex(sha1),
alt->base);
data->alt->base);
}
static inline int needs_quote(int ch)
@ -942,12 +956,13 @@ static char *quote_ref_url(const char *base, const char *ref)
return qref;
}
int fetch_ref(char *ref, unsigned char *sha1)
static int fetch_ref(struct walker *walker, char *ref, unsigned char *sha1)
{
char *url;
char hex[42];
struct buffer buffer;
const char *base = alt->base;
struct walker_data *data = walker->data;
const char *base = data->alt->base;
struct active_request_slot *slot;
struct slot_results results;
buffer.size = 41;
@ -976,84 +991,45 @@ int fetch_ref(char *ref, unsigned char *sha1)
return 0;
}
int main(int argc, const char **argv)
static void cleanup(struct walker *walker)
{
struct walker_data *data = walker->data;
http_cleanup();
curl_slist_free_all(data->no_pragma_header);
}
struct walker *get_http_walker(const char *url)
{
int commits;
const char **write_ref = NULL;
char **commit_id;
const char *url;
char *s;
int arg = 1;
int rc = 0;
setup_git_directory();
git_config(git_default_config);
while (arg < argc && argv[arg][0] == '-') {
if (argv[arg][1] == 't') {
get_tree = 1;
} else if (argv[arg][1] == 'c') {
get_history = 1;
} else if (argv[arg][1] == 'a') {
get_all = 1;
get_tree = 1;
get_history = 1;
} else if (argv[arg][1] == 'v') {
get_verbosely = 1;
} else if (argv[arg][1] == 'w') {
write_ref = &argv[arg + 1];
arg++;
} else if (!strcmp(argv[arg], "--recover")) {
get_recover = 1;
} else if (!strcmp(argv[arg], "--stdin")) {
commits_on_stdin = 1;
}
arg++;
}
if (argc < arg + 2 - commits_on_stdin) {
usage("git-http-fetch [-c] [-t] [-a] [-v] [--recover] [-w ref] [--stdin] commit-id url");
return 1;
}
if (commits_on_stdin) {
commits = pull_targets_stdin(&commit_id, &write_ref);
} else {
commit_id = (char **) &argv[arg++];
commits = 1;
}
url = argv[arg];
struct walker_data *data = xmalloc(sizeof(struct walker_data));
struct walker *walker = xmalloc(sizeof(struct walker));
http_init();
no_pragma_header = curl_slist_append(no_pragma_header, "Pragma:");
data->no_pragma_header = curl_slist_append(NULL, "Pragma:");
alt = xmalloc(sizeof(*alt));
alt->base = xmalloc(strlen(url) + 1);
strcpy(alt->base, url);
for (s = alt->base + strlen(alt->base) - 1; *s == '/'; --s)
data->alt = xmalloc(sizeof(*data->alt));
data->alt->base = xmalloc(strlen(url) + 1);
strcpy(data->alt->base, url);
for (s = data->alt->base + strlen(data->alt->base) - 1; *s == '/'; --s)
*s = 0;
alt->got_indices = 0;
alt->packs = NULL;
alt->next = NULL;
data->alt->got_indices = 0;
data->alt->packs = NULL;
data->alt->next = NULL;
data->got_alternates = -1;
walker->corrupt_object_found = 0;
walker->fetch = fetch;
walker->fetch_ref = fetch_ref;
walker->prefetch = prefetch;
walker->cleanup = cleanup;
walker->data = data;
#ifdef USE_CURL_MULTI
add_fill_function(NULL, fill_active_slot);
add_fill_function(walker, (int (*)(void *)) fill_active_slot);
#endif
if (pull(commits, commit_id, write_ref, url))
rc = 1;
http_cleanup();
curl_slist_free_all(no_pragma_header);
if (commits_on_stdin)
pull_targets_free(commits, commit_id, write_ref);
if (corrupt_object_found) {
fprintf(stderr,
"Some loose object were found to be corrupt, but they might be just\n"
"a false '404 Not Found' error message sent with incorrect HTTP\n"
"status code. Suggest running git-fsck.\n");
}
return rc;
return walker;
}

83
fetch.c → walker.c
View File

@ -1,5 +1,5 @@
#include "cache.h"
#include "fetch.h"
#include "walker.h"
#include "commit.h"
#include "tree.h"
#include "tree-walk.h"
@ -8,16 +8,11 @@
#include "refs.h"
#include "strbuf.h"
int get_tree = 0;
int get_history = 0;
int get_all = 0;
int get_verbosely = 0;
int get_recover = 0;
static unsigned char current_commit_sha1[20];
void pull_say(const char *fmt, const char *hex)
void walker_say(struct walker *walker, const char *fmt, const char *hex)
{
if (get_verbosely)
if (walker->get_verbosely)
fprintf(stderr, fmt, hex);
}
@ -32,9 +27,9 @@ static void report_missing(const struct object *obj)
sha1_to_hex(current_commit_sha1));
}
static int process(struct object *obj);
static int process(struct walker *walker, struct object *obj);
static int process_tree(struct tree *tree)
static int process_tree(struct walker *walker, struct tree *tree)
{
struct tree_desc desc;
struct name_entry entry;
@ -59,7 +54,7 @@ static int process_tree(struct tree *tree)
if (blob)
obj = &blob->object;
}
if (!obj || process(obj))
if (!obj || process(walker, obj))
return -1;
}
free(tree->buffer);
@ -74,7 +69,7 @@ static int process_tree(struct tree *tree)
static struct commit_list *complete = NULL;
static int process_commit(struct commit *commit)
static int process_commit(struct walker *walker, struct commit *commit)
{
if (parse_commit(commit))
return -1;
@ -88,43 +83,43 @@ static int process_commit(struct commit *commit)
hashcpy(current_commit_sha1, commit->object.sha1);
pull_say("walk %s\n", sha1_to_hex(commit->object.sha1));
walker_say(walker, "walk %s\n", sha1_to_hex(commit->object.sha1));
if (get_tree) {
if (process(&commit->tree->object))
if (walker->get_tree) {
if (process(walker, &commit->tree->object))
return -1;
if (!get_all)
get_tree = 0;
if (!walker->get_all)
walker->get_tree = 0;
}
if (get_history) {
if (walker->get_history) {
struct commit_list *parents = commit->parents;
for (; parents; parents = parents->next) {
if (process(&parents->item->object))
if (process(walker, &parents->item->object))
return -1;
}
}
return 0;
}
static int process_tag(struct tag *tag)
static int process_tag(struct walker *walker, struct tag *tag)
{
if (parse_tag(tag))
return -1;
return process(tag->tagged);
return process(walker, tag->tagged);
}
static struct object_list *process_queue = NULL;
static struct object_list **process_queue_end = &process_queue;
static int process_object(struct object *obj)
static int process_object(struct walker *walker, struct object *obj)
{
if (obj->type == OBJ_COMMIT) {
if (process_commit((struct commit *)obj))
if (process_commit(walker, (struct commit *)obj))
return -1;
return 0;
}
if (obj->type == OBJ_TREE) {
if (process_tree((struct tree *)obj))
if (process_tree(walker, (struct tree *)obj))
return -1;
return 0;
}
@ -132,7 +127,7 @@ static int process_object(struct object *obj)
return 0;
}
if (obj->type == OBJ_TAG) {
if (process_tag((struct tag *)obj))
if (process_tag(walker, (struct tag *)obj))
return -1;
return 0;
}
@ -141,7 +136,7 @@ static int process_object(struct object *obj)
typename(obj->type), sha1_to_hex(obj->sha1));
}
static int process(struct object *obj)
static int process(struct walker *walker, struct object *obj)
{
if (obj->flags & SEEN)
return 0;
@ -154,7 +149,7 @@ static int process(struct object *obj)
else {
if (obj->flags & COMPLETE)
return 0;
prefetch(obj->sha1);
walker->prefetch(walker, obj->sha1);
}
object_list_insert(obj, process_queue_end);
@ -162,7 +157,7 @@ static int process(struct object *obj)
return 0;
}
static int loop(void)
static int loop(struct walker *walker)
{
struct object_list *elem;
@ -178,25 +173,25 @@ static int loop(void)
* the queue because we needed to fetch it first.
*/
if (! (obj->flags & TO_SCAN)) {
if (fetch(obj->sha1)) {
if (walker->fetch(walker, obj->sha1)) {
report_missing(obj);
return -1;
}
}
if (!obj->type)
parse_object(obj->sha1);
if (process_object(obj))
if (process_object(walker, obj))
return -1;
}
return 0;
}
static int interpret_target(char *target, unsigned char *sha1)
static int interpret_target(struct walker *walker, char *target, unsigned char *sha1)
{
if (!get_sha1_hex(target, sha1))
return 0;
if (!check_ref_format(target)) {
if (!fetch_ref(target, sha1)) {
if (!walker->fetch_ref(walker, target, sha1)) {
return 0;
}
}
@ -213,7 +208,7 @@ static int mark_complete(const char *path, const unsigned char *sha1, int flag,
return 0;
}
int pull_targets_stdin(char ***target, const char ***write_ref)
int walker_targets_stdin(char ***target, const char ***write_ref)
{
int targets = 0, targets_alloc = 0;
struct strbuf buf;
@ -243,7 +238,7 @@ int pull_targets_stdin(char ***target, const char ***write_ref)
return targets;
}
void pull_targets_free(int targets, char **target, const char **write_ref)
void walker_targets_free(int targets, char **target, const char **write_ref)
{
while (targets--) {
free(target[targets]);
@ -252,8 +247,8 @@ void pull_targets_free(int targets, char **target, const char **write_ref)
}
}
int pull(int targets, char **target, const char **write_ref,
const char *write_ref_log_details)
int walker_fetch(struct walker *walker, int targets, char **target,
const char **write_ref, const char *write_ref_log_details)
{
struct ref_lock **lock = xcalloc(targets, sizeof(struct ref_lock *));
unsigned char *sha1 = xmalloc(targets * 20);
@ -275,19 +270,19 @@ int pull(int targets, char **target, const char **write_ref,
}
}
if (!get_recover)
if (!walker->get_recover)
for_each_ref(mark_complete, NULL);
for (i = 0; i < targets; i++) {
if (interpret_target(target[i], &sha1[20 * i])) {
if (interpret_target(walker, target[i], &sha1[20 * i])) {
error("Could not interpret %s as something to pull", target[i]);
goto unlock_and_fail;
}
if (process(lookup_unknown_object(&sha1[20 * i])))
if (process(walker, lookup_unknown_object(&sha1[20 * i])))
goto unlock_and_fail;
}
if (loop())
if (loop(walker))
goto unlock_and_fail;
if (write_ref_log_details) {
@ -308,10 +303,16 @@ int pull(int targets, char **target, const char **write_ref,
return 0;
unlock_and_fail:
for (i = 0; i < targets; i++)
if (lock[i])
unlock_ref(lock[i]);
return -1;
}
void walker_free(struct walker *walker)
{
walker->cleanup(walker);
free(walker);
}

37
walker.h Normal file
View File

@ -0,0 +1,37 @@
#ifndef WALKER_H
#define WALKER_H
struct walker {
void *data;
int (*fetch_ref)(struct walker *, char *ref, unsigned char *sha1);
void (*prefetch)(struct walker *, unsigned char *sha1);
int (*fetch)(struct walker *, unsigned char *sha1);
void (*cleanup)(struct walker *);
int get_tree;
int get_history;
int get_all;
int get_verbosely;
int get_recover;
int corrupt_object_found;
};
/* Report what we got under get_verbosely */
void walker_say(struct walker *walker, const char *, const char *);
/* Load pull targets from stdin */
int walker_targets_stdin(char ***target, const char ***write_ref);
/* Free up loaded targets */
void walker_targets_free(int targets, char **target, const char **write_ref);
/* If write_ref is set, the ref filename to write the target value to. */
/* If write_ref_log_details is set, additional text will appear in the ref log. */
int walker_fetch(struct walker *impl, int targets, char **target,
const char **write_ref, const char *write_ref_log_details);
void walker_free(struct walker *walker);
struct walker *get_http_walker(const char *url);
#endif /* WALKER_H */