我有一段时间让libgit2克隆。这个使用克隆的例子几乎是从他们的文档中逐字记录的。
似乎libgit2在尝试删除＆＃39; core.symlinks＆＃39;时崩溃了。它作为克隆的一部分创建的git repo中的键。
有谁知道如何使用libgit2正确克隆github repo。
libgit2 - 稳定 - v0.21.1
#include <git2.h>
#include <unistd.h>
#include <stdio.h>
typedef struct {
int a;
/* … */ } progress_data;
int fetch_progress(
const git_transfer_progress *stats,
void *payload)
{
progress_data *pd = (progress_data*)payload;
int fetch_percent =
(100 * stats->received_objects) /
stats->total_objects;
int index_percent =
(100 * stats->indexed_objects) /
stats->total_objects;
int kbytes = stats->received_bytes / 1024;
printf("network %3d%% (%4d kb, %5d/%5d) /"
" index %3d%% (%5d/%5d)\n",
fetch_percent, kbytes,
stats->received_objects, stats->total_objects,
index_percent,
stats->indexed_objects, stats->total_objects);
// printf("in fetch_progress\n");
/* Do something with network transfer progress */
}
void checkout_progress(
const char *path,
size_t cur,
size_t tot,
void *payload)
{
progress_data *pd = (progress_data*)payload;
printf("in checkout_progress\n");
/* Do something with checkout progress */
}
int main(void) {
/* … */
progress_data d = { 0 };
git_clone_options clone_opts = GIT_CLONE_OPTIONS_INIT;
git_checkout_options checkout_opts = GIT_CHECKOUT_OPTIONS_INIT;
checkout_opts.checkout_strategy = GIT_CHECKOUT_FORCE;
checkout_opts.progress_cb = checkout_progress;
checkout_opts.progress_payload = &d;
clone_opts.checkout_opts = checkout_opts;
clone_opts.remote_callbacks.transfer_progress = fetch_progress;
// clone_opts.remote_callbacks.fetch_progress_cb = fetch_progress;
clone_opts.remote_callbacks.payload = &d;
git_repository *repo = NULL;
const char *url = "git://github.com/WigWagCo/twlib";
const char *path = "tmp";
int error = git_clone(&repo, url, path, &clone_opts);
sleep(15);
}
和崩溃：
$ gdb --args ./a.out
GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2.1) 7.4-2012.04
...
(gdb) r
Starting program: /home/ed/work/devicejs/tools/packageTools/a.out
warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7ffff7ffa000
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
a.out: ../vendor/libgit2/src/global.c:274: git__global_state: Assertion `git_atomic_get(&git__n_inits) > 0' failed.
Program received signal SIGABRT, Aborted.
0x00007ffff6c8c425 in __GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
64 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0 0x00007ffff6c8c425 in __GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1 0x00007ffff6c8fb8b in __GI_abort () at abort.c:91
#2 0x00007ffff6c850ee in __assert_fail_base (fmt=<optimized out>, assertion=0x4bad88 "git_atomic_get(&git__n_inits) > 0", file=0x4bad50 "../vendor/libgit2/src/global.c", line=<optimized out>, function=<optimized out>)
at assert.c:94
#3 0x00007ffff6c85192 in __GI___assert_fail (assertion=0x4bad88 "git_atomic_get(&git__n_inits) > 0", file=0x4bad50 "../vendor/libgit2/src/global.c", line=274, function=0x4badb0 "git__global_state") at assert.c:103
#4 0x0000000000411cd3 in git__global_state () at ../vendor/libgit2/src/global.c:274
#5 0x000000000040e06a in set_error (error_class=7, string=0x6f8670 "Could not find key 'core.symlinks' to delete") at ../vendor/libgit2/src/errors.c:23
#6 0x000000000040e247 in giterr_set (error_class=7, string=0x4ba350 "Could not find key '%s' to delete") at ../vendor/libgit2/src/errors.c:74
#7 0x000000000040b9da in config_delete (cfg=0x6f8230, name=0x4bc555 "core.symlinks") at ../vendor/libgit2/src/config_file.c:611
#8 0x00000000004082d4 in git_config_delete_entry (cfg=0x6f80a0, name=0x4bc555 "core.symlinks") at ../vendor/libgit2/src/config.c:606
#9 0x000000000041ebc6 in repo_init_fs_configs (cfg=0x6f80a0, cfg_path=0x6f8190 "/home/ed/work/devicejs/tools/packageTools/tmp/.git/config", repo_dir=0x6f8130 "/home/ed/work/devicejs/tools/packageTools/tmp/.git/",
work_dir=0x6f80e0 "/home/ed/work/devicejs/tools/packageTools/tmp/", update_ignorecase=true) at ../vendor/libgit2/src/repository.c:968
#10 0x000000000041ed4d in repo_init_config (repo_dir=0x6f8130 "/home/ed/work/devicejs/tools/packageTools/tmp/.git/", work_dir=0x6f80e0 "/home/ed/work/devicejs/tools/packageTools/tmp/", flags=196624, mode=0)
at ../vendor/libgit2/src/repository.c:1015
#11 0x000000000041fc4b in git_repository_init_ext (out=0x7fffffffded0, given_repo=0x4b9bf8 "tmp", opts=0x7fffffffde50) at ../vendor/libgit2/src/repository.c:1483
#12 0x000000000041fac2 in git_repository_init (repo_out=0x7fffffffded0, path=0x4b9bf8 "tmp", is_bare=0) at ../vendor/libgit2/src/repository.c:1446
#13 0x00000000004068da in git_clone (out=0x7fffffffdff8, url=0x4b9bd8 "git://github.com/WigWagCo/twlib", local_path=0x4b9bf8 "tmp", _options=0x7fffffffe090) at ../vendor/libgit2/src/clone.c:403
#14 0x0000000000405a53 in main ()
(gdb) q
答案 0 :(得分：1)
人们对github的libgit2作出回应：
以下是libgit2 v0.21.1（已启用线程）的repo的工作克隆：
#include <git2.h>
#include <unistd.h>
#include <stdio.h>
int COMPLETE = 0;
typedef struct {
int a;
/* … */ } progress_data;
int fetch_progress(
const git_transfer_progress *stats,
void *payload)
{
progress_data *pd = (progress_data*)payload;
int fetch_percent =
(100 * stats->received_objects) /
stats->total_objects;
int index_percent =
(100 * stats->indexed_objects) /
stats->total_objects;
int kbytes = stats->received_bytes / 1024;
printf("network %3d%% (%4d kb, %5d/%5d) /"
" index %3d%% (%5d/%5d)\n",
fetch_percent, kbytes,
stats->received_objects, stats->total_objects,
index_percent,
stats->indexed_objects, stats->total_objects);
if(stats->indexed_objects >= stats->total_objects) {
printf("COMPLETE=1\n");
COMPLETE = 1;
}
/* Do something with network transfer progress */
return 0; // return 0 for success. ~src/common.h:95 for info
}
void checkout_progress(
const char *path,
size_t cur,
size_t tot,
void *payload)
{
progress_data *pd = (progress_data*)payload;
printf("in checkout_progress\n");
/* Do something with checkout progress */
}
int complete_cb(git_remote_completion_type type, void *data) {
printf("complete\n");
}
int main(void) {
git_threads_init();
/* … */
progress_data d = { 0 };
git_clone_options clone_opts = GIT_CLONE_OPTIONS_INIT;
git_checkout_options checkout_opts = GIT_CHECKOUT_OPTIONS_INIT;
checkout_opts.checkout_strategy = GIT_CHECKOUT_FORCE;
checkout_opts.progress_cb = checkout_progress;
checkout_opts.progress_payload = &d;
clone_opts.checkout_opts = checkout_opts;
clone_opts.remote_callbacks.transfer_progress = fetch_progress;
clone_opts.remote_callbacks.payload = &d;
clone_opts.remote_callbacks.completion = complete_cb;
git_repository *repo = NULL;
const char *url = "git://github.com/WigWagCo/twlib";
const char *path = "./tmp";
printf("wait for completion.\n");
int error = git_clone(&repo, url, path, &clone_opts);
if(!COMPLETE)
printf("Clone failed.\n");
else
printf("Clone complete.\n");
printf("\n");
if (error != 0) {
const git_error *err = giterr_last();
if (err) printf("ERROR %d: %s\n", err->klass, err->message);
else printf("ERROR %d: no detailed info\n", error);
} else
if(repo) git_repository_free(repo);
git_threads_shutdown();
}
/**
Build:
g++ -I./vendor/libgit2/include testhttps.cc ./build/Release/git2.a ./build/Release/zlib.a ./build/Release/http_parser.a -lpthread -lssl -lssh2 -lrt
*/