707 lines
23 KiB
C++
707 lines
23 KiB
C++
#include "git_library.h"
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#include "global_defines.h"
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#include "local_git_repository.h"
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#include <QDir>
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#include <QDebug>
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#include <git2.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// see https://libgit2.org/libgit2/ex/HEAD/checkout.html
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/* Define t/he printf format specifier to use for size_t output */
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#if defined(_MSC_VER) || defined(__MINGW32__)
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# define PRIuZ "Illu"
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# define PRIxZ "Illx"
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# define PRIdZ "Illd"
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#else
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# define PRIuZ "zu"
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# define PRIxZ "zx"
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# define PRIdZ "zd"
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#endif
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typedef struct {
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unsigned int force : 1;
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unsigned int progress : 1;
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unsigned int perf : 1;
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} checkout_options;
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int cred_acquire_cb(git_credential **out,
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const char *url,
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const char *username_from_url,
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unsigned int allowed_types,
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void *payload)
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{
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Q_UNUSED(url);
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Q_UNUSED(username_from_url);
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Q_UNUSED(payload);
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int error = -1;
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if (allowed_types & GIT_CREDENTIAL_USERPASS_PLAINTEXT) {
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error = git_credential_userpass_plaintext_new(out,
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GitLibrary::userName().toStdString().c_str(),
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GitLibrary::userPassword().toStdString().c_str());
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} else {
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fprintf(stderr, "GIT_CREDENTIAL_USERPASS_PLAINTEXT not supported by protocol (allowed_types=%08x)\n", allowed_types);
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}
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return error;
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}
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static bool check(int error, const char *message, const char *extra) {
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const git_error *lg2err;
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const char *lg2msg = "", *lg2spacer = "";
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if (!error) {
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return true;
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}
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if ((lg2err = git_error_last()) != NULL && lg2err->message != NULL) {
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lg2msg = lg2err->message;
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lg2spacer = " - ";
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}
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if (extra)
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fprintf(stderr, "%s '%s' [%d]%s%s\n",
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message, extra, error, lg2spacer, lg2msg);
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else
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fprintf(stderr, "%s [%d]%s%s\n",
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message, error, lg2spacer, lg2msg);
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// exit(1);
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return false;
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}
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static int resolve_refish(git_annotated_commit **commit, git_repository *repo, const char *refish) {
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git_reference *ref;
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git_object *obj;
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int err = 0;
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assert(commit != NULL);
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err = git_reference_dwim(&ref, repo, refish);
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if (err == GIT_OK) {
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git_annotated_commit_from_ref(commit, repo, ref);
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git_reference_free(ref);
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return 0;
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}
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err = git_revparse_single(&obj, repo, refish);
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if (err == GIT_OK) {
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err = git_annotated_commit_lookup(commit, repo, git_object_id(obj));
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git_object_free(obj);
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}
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return err;
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}
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static int perform_checkout_ref(git_repository *repo,
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git_annotated_commit *target,
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const char *target_ref, checkout_options *opts) {
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git_checkout_options checkout_opts;
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git_reference *ref = NULL, *branch = NULL;
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git_commit *target_commit = NULL;
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int err;
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if ((err = git_checkout_options_init(&checkout_opts, GIT_CHECKOUT_OPTIONS_VERSION)) < 0) {
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fprintf(stderr, "error checkout options init %s\n", git_error_last()->message);
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return err;
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}
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// Setup our checkout options from the parsed options
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checkout_opts.checkout_strategy = GIT_CHECKOUT_SAFE;
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if (opts->force) {
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// checkout_opts.checkout_strategy = GIT_CHECKOUT_FORCE;
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}
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if (opts->progress) {
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// checkout_opts.progress_cb = print_checkout_progress;
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}
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if (opts->perf) {
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// checkout_opts.perfdata_cb = print_perf_data;
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}
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// Grab the commit we're interested to move to
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err = git_commit_lookup(&target_commit, repo, git_annotated_commit_id(target));
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if (err != 0) {
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fprintf(stderr, "failed to lookup commit: %s\n", git_error_last()->message);
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goto cleanup;
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}
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// Perform the checkout so the workdir corresponds to what target_commit contains.
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// Note that it's okay to pass a git_commit here, because it will be peeled to a tree.
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err = git_checkout_tree(repo, (const git_object *)target_commit, &checkout_opts);
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if (err != 0) {
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fprintf(stderr, "failed to checkout tree: %s\n", git_error_last()->message);
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goto cleanup;
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}
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// Now that the checkout has completed, we have to update HEAD.
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// Depending on the "origin" of target (ie. it's an OID or a branch name), we might need to detach HEAD.
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if (git_annotated_commit_ref(target)) {
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const char *target_head;
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if ((err = git_reference_lookup(&ref, repo, git_annotated_commit_ref(target))) < 0)
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goto error;
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if (git_reference_is_remote(ref)) {
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if ((err = git_branch_create_from_annotated(&branch, repo, target_ref, target, 0)) < 0)
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goto error;
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target_head = git_reference_name(branch);
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} else {
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target_head = git_annotated_commit_ref(target);
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}
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err = git_repository_set_head(repo, target_head);
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} else {
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err = git_repository_set_head_detached_from_annotated(repo, target);
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}
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error:
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if (err != 0) {
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fprintf(stderr, "failed to update HEAD reference: %s\n", git_error_last()->message);
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goto cleanup;
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}
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cleanup:
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git_commit_free(target_commit);
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git_reference_free(branch);
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git_reference_free(ref);
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return err;
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}
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static int guess_refish(git_annotated_commit **out, git_repository *repo, const char *ref) {
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git_strarray remotes = { NULL, 0 };
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git_reference *remote_ref = NULL;
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int error;
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size_t i;
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if ((error = git_remote_list(&remotes, repo)) < 0) {
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fprintf(stderr, "error git_remote_list %s\n", git_error_last()->message);
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goto out;
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}
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for (i = 0; i < remotes.count; i++) {
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char *refname = NULL;
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size_t reflen;
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reflen = snprintf(refname, 0, "refs/remotes/%s/%s", remotes.strings[i], ref);
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if ((refname = (char *)malloc(reflen + 1)) == NULL) {
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error = -1;
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fprintf(stderr, "%s:%d malloc failed\n", __func__, __LINE__);
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goto next;
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}
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snprintf(refname, reflen + 1, "refs/remotes/%s/%s", remotes.strings[i], ref);
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if ((error = git_reference_lookup(&remote_ref, repo, refname)) < 0) {
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fprintf(stderr, "git reference lookup %s\n", git_error_last()->message);
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goto next;
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}
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break;
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next:
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free(refname);
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refname = NULL;
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if (error < 0 && error != GIT_ENOTFOUND) {
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break;
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}
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}
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if (!remote_ref) {
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error = GIT_ENOTFOUND;
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goto out;
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}
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if ((error = git_annotated_commit_from_ref(out, repo, remote_ref)) < 0)
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goto out;
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out:
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git_reference_free(remote_ref);
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git_strarray_dispose(&remotes);
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return error;
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}
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//
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// git fetch
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//
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static int progress_cb(const char *str, int len, void *data) {
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(void)data;
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printf("remote: %.*s", len, str);
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fflush(stdout); /* We don't have the \n to force the flush */
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return 0;
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}
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/**
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* This function gets called for each remote-tracking branch that gets
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* updated. The message we output depends on whether it's a new one or
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* an update.
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*/
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static int update_cb(const char *refname, const git_oid *a, const git_oid *b, void *data) {
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char a_str[GIT_OID_SHA1_HEXSIZE+1], b_str[GIT_OID_SHA1_HEXSIZE+1];
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(void)data;
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git_oid_fmt(b_str, b);
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b_str[GIT_OID_SHA1_HEXSIZE] = '\0';
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if (git_oid_is_zero(a)) {
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printf("[new] %.20s %s\n", b_str, refname);
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} else {
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git_oid_fmt(a_str, a);
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a_str[GIT_OID_SHA1_HEXSIZE] = '\0';
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printf("[updated] %.10s..%.10s %s\n", a_str, b_str, refname);
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}
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return 0;
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}
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/**
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* This gets called during the download and indexing. Here we show
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* processed and total objects in the pack and the amount of received
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* data. Most frontends will probably want to show a percentage and
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* the download rate.
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*/
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static int transfer_progress_cb(const git_indexer_progress *stats, void *payload) {
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(void)payload;
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if (stats->received_objects == stats->total_objects) {
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printf("Resolving deltas %u/%u\r",
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stats->indexed_deltas, stats->total_deltas);
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} else if (stats->total_objects > 0) {
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printf("Received %u/%u objects (%u) in %" PRIuZ " bytes\r",
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stats->received_objects, stats->total_objects,
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stats->indexed_objects, stats->received_bytes);
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}
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return 0;
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}
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static int fetch(git_repository *repo, char const *repoName) {
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git_remote *remote = NULL;
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const git_indexer_progress *stats;
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git_fetch_options fetch_opts;
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//git_fetch_options fetch_opts = GIT_FETCH_OPTIONS_INIT;
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git_fetch_options_init(&fetch_opts, GIT_FETCH_OPTIONS_VERSION);
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/* Figure out whether it's a named remote or a URL */
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printf("Fetching %s for repo %p\n", repoName, repo);
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if (git_remote_lookup(&remote, repo, repoName) < 0)
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if (git_remote_create_anonymous(&remote, repo, repoName) < 0)
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goto on_error;
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/* Set up the callbacks (only update_tips for now) */
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fetch_opts.callbacks.update_tips = &update_cb;
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fetch_opts.callbacks.sideband_progress = &progress_cb;
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fetch_opts.callbacks.transfer_progress = transfer_progress_cb;
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fetch_opts.callbacks.credentials = cred_acquire_cb;
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/**
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* Perform the fetch with the configured refspecs from the
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* config. Update the reflog for the updated references with
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* "fetch".
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*/
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if (git_remote_fetch(remote, NULL, &fetch_opts, "fetch") < 0)
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goto on_error;
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/**
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* If there are local objects (we got a thin pack), then tell
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* the user how many objects we saved from having to cross the
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* network.
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*/
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stats = git_remote_stats(remote);
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if (stats->local_objects > 0) {
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printf("\rReceived %u/%u objects in %" PRIuZ " bytes (used %u local objects)\n",
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stats->indexed_objects, stats->total_objects, stats->received_bytes, stats->local_objects);
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} else{
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printf("\rReceived %u/%u objects in %" PRIuZ "bytes\n",
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stats->indexed_objects, stats->total_objects, stats->received_bytes);
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}
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git_remote_free(remote);
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return 0;
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on_error:
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git_remote_free(remote);
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return -1;
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}
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//
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// git merge
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//
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struct merge_options { const char **heads;
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size_t heads_count;
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git_annotated_commit **annotated;
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size_t annotated_count;
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unsigned int no_commit : 1;
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};
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static void merge_options_init(struct merge_options *opts) {
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memset(opts, 0, sizeof(*opts));
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opts->heads = NULL;
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opts->heads_count = 0;
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opts->annotated = NULL;
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opts->annotated_count = 0;
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}
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static void parse_options(const char **repo_path, struct merge_options *opts) {
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#if 0
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struct args_info args = ARGS_INFO_INIT;
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for (args.pos = 1; args.pos < argc; ++args.pos) {
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const char *curr = argv[args.pos];
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if (curr[0] != '-') {
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opts_add_refish(opts, curr);
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} else if (!strcmp(curr, "--no-commit")) {
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opts->no_commit = 1;
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} else if (match_str_arg(repo_path, &args, "--git-dir")) {
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continue;
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}
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}
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#endif
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}
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static int merge(git_repository *repo) {
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struct merge_options opts;
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git_index *index;
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git_repository_state_t state;
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git_merge_analysis_t analysis;
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git_merge_preference_t preference;
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const char *path = ".";
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int err = 0;
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merge_options_init(&opts);
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parse_options(&path, &opts);
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cleanup:
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free((char **)opts.heads);
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free(opts.annotated);
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return 0;
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}
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#ifdef __cplusplus
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}
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#endif
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QString GitLibrary::m_userName;
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QString GitLibrary::m_userPassword;
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int GitLibrary::Init() {
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return git_libgit2_init();
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}
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int GitLibrary::Shutdown() {
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return git_libgit2_shutdown();
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}
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CWD::CWD(QString const &localRepoName) {
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m_prev = QDir::current();
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m_valid = false;
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if (!localRepoName.startsWith("customer_")) {
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qCritical() << HEADER
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<< "localRepoName not starting with customer_*";
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return;
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}
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QString const &p = QDir::cleanPath(LocalGitRepository::GetReposRootDirectory()
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+ QDir::separator() + localRepoName);
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if (!QDir(p).exists()) {
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if (!QDir().mkpath(p)) {
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qCritical() << HEADER << "ERROR cannot mkdir" << p;
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}
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}
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m_valid = QDir(p).exists();
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if (m_valid) {
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QDir::setCurrent(p);
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qCritical() << HEADER << "setCurrent working directory" << p;
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m_localRepoDir.setPath(p);
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m_localRepoGitDir.setPath(p + QDir::separator() + ".git");
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} else {
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qCritical() << HEADER << "ERROR p" << p << "still not exists";
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}
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}
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CWD::~CWD() {
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QDir::setCurrent(m_prev.absolutePath());
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qCritical() << HEADER << "setCurrent working directory" << m_prev.absolutePath();
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}
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int GitLibrary::CheckoutRepository(char const *url,
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char const *localRepoName,
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char const *branchName) {
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int err = 0;
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checkout_options opts;
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git_repository_state_t state = GIT_REPOSITORY_STATE_NONE;
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git_annotated_commit *checkout_target = NULL;
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git_reference *branch_ref = NULL;
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CWD cwd(localRepoName);
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QString const &localRepoPath = cwd.localRepoDir().absolutePath();
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if (!cwd.localRepoGitDir().exists()) {
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if (!url) {
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qCritical() << HEADER << "url" << url << "not given";
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return -1;
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}
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qCritical() << HEADER
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<< "localRepoGirDir" << cwd.localRepoGitDir().absolutePath()
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<< "does not exist. cloning...";
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if ((err = CloneRepository(url, localRepoName)) < 0) { // a "clone" checkouts "master"
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return err;
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}
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}
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qCritical() << HEADER
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<< "checkout repository:" << localRepoPath
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<< " branch:" << branchName << "...";
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git_repository *repo = LocalGitRepository::GetInstance(localRepoName)->GetGitRepository();
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if (!repo) { // no clone
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std::string const &s = localRepoPath.toStdString();
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char const *r = s.c_str();
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if ((err = git_repository_open(&repo, r)) != 0) {
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qCritical() << HEADER << "repository" << localRepoPath
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<< "cannot be opened:" << QString(git_error_last()->message);
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return err;
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}
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qCritical() << HEADER << "repository" << localRepoPath << "opened";
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LocalGitRepository::GetInstance(localRepoName)->SetGitRepository(repo);
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}
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// Make sure we're not about to checkout while something else is going on
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if ((state = (git_repository_state_t)git_repository_state(repo)) != GIT_REPOSITORY_STATE_NONE) {
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qCritical() << __func__ << ":" << __LINE__ << "repository" << localRepoPath
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<< "is in unexpected state" << (int)state;
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err = -1;
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} else {
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if ((err = resolve_refish(&checkout_target, repo, branchName)) < 0 &&
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(err = guess_refish(&checkout_target, repo, branchName)) < 0) {
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qCritical() << __func__ << ":" << __LINE__ << "ERROR failed to resolve"
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<< QString(branchName) << QString(git_error_last()->message);
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} else {
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if ((err = perform_checkout_ref(repo, checkout_target, branchName, &opts)) == 0) {
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if ((err = git_branch_lookup(&branch_ref, repo, branchName, GIT_BRANCH_LOCAL)) != 0) {
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if (err == GIT_ENOTFOUND) {
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qCritical() << __func__ << ":" << __LINE__
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<< "ERROR local branch" << branchName << "not found";
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} else {
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qCritical() << __func__ << ":" << __LINE__
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<< "ERROR local branch" << branchName << "not found"
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<< QString(git_error_last()->message);
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}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (branch_ref) {
|
|
git_reference_free(branch_ref);
|
|
}
|
|
|
|
if (checkout_target) {
|
|
git_annotated_commit_free(checkout_target);
|
|
}
|
|
|
|
if (err == 0) {
|
|
qCritical() << HEADER
|
|
<< "checkout repository" << localRepoPath
|
|
<< "and branch" << branchName << "done";
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
int GitLibrary::CloneRepository(char const *url, char const *localRepoName) {
|
|
CWD cwd(localRepoName);
|
|
int res = 0;
|
|
|
|
qCritical() << HEADER;
|
|
qCritical() << " url:" << url;
|
|
qCritical() << "repo:" << localRepoName;
|
|
|
|
git_clone_options opts;
|
|
if ((res = git_clone_options_init(&opts, GIT_CLONE_OPTIONS_VERSION)) == 0) {
|
|
opts.checkout_branch = "master";
|
|
git_repository *repo = LocalGitRepository::GetInstance(localRepoName)->GetGitRepository();
|
|
if (!repo) {
|
|
if ((res = git_clone(&repo, url, ".", &opts)) < 0) {
|
|
git_error const *error = git_error_last();
|
|
qCritical() << HEADER;
|
|
qCritical() << " error:" << error->message;
|
|
qCritical() << "localRepoDir:" << cwd.localRepoDir().absolutePath();
|
|
}
|
|
LocalGitRepository::GetInstance(localRepoName)->SetGitRepository(repo);
|
|
}
|
|
} else {
|
|
git_error const *error = git_error_last();
|
|
qCritical() << HEADER << error->message;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
int GitLibrary::CommitFile(char const *localRepoName, char const *branchName,
|
|
char const *fName, char const *commitMessage) {
|
|
CWD cwd(localRepoName);
|
|
int error = CheckoutRepository(nullptr, localRepoName, branchName);
|
|
if (error == 0) {
|
|
git_repository *repo = LocalGitRepository::GetInstance(localRepoName)->GetGitRepository();
|
|
|
|
git_oid commit_oid,tree_oid;
|
|
git_tree *tree = NULL;
|
|
git_index *index = NULL;
|
|
git_object *parent = NULL;
|
|
git_reference *ref = NULL;
|
|
git_signature *signature = NULL;
|
|
git_repository_state_t state = GIT_REPOSITORY_STATE_NONE;
|
|
|
|
if (git_repository_head_unborn(repo) == 1) {
|
|
qCritical() << HEADER << "HEAD unborn. Create first commit";
|
|
return -1;
|
|
}
|
|
|
|
// Make sure we're not about to checkout while something else is going on
|
|
if ((state = (git_repository_state_t)git_repository_state(repo)) != GIT_REPOSITORY_STATE_NONE) {
|
|
qCritical() << HEADER;
|
|
qCritical() << "ERROR repository" << cwd.localRepoDir().absolutePath()
|
|
<< "is in unexpected state" << (int)state;
|
|
error = -1;
|
|
} else {
|
|
error = git_revparse_ext(&parent, &ref, repo, "HEAD");
|
|
if (error == GIT_ENOTFOUND) {
|
|
qCritical() << HEADER << "HEAD not found. Creating first commit";
|
|
error = 0;
|
|
} else if (error != 0) {
|
|
const git_error *err = git_error_last();
|
|
if (err) {
|
|
qCritical() << HEADER << QString("ERROR %d: %s").arg(err->klass).arg(err->message);
|
|
} else {
|
|
qCritical() << HEADER << QString("ERROR no detailed error %d").arg(error);
|
|
}
|
|
}
|
|
|
|
if (error == 0) {
|
|
if (check(git_repository_index(&index, repo), "Could not open repository index", NULL) &&
|
|
check(git_index_write_tree(&tree_oid, index), "Could not write tree", NULL) &&
|
|
check(git_index_write(index), "Could not write index", NULL) &&
|
|
check(git_tree_lookup(&tree, repo, &tree_oid), "Error looking up tree", NULL) &&
|
|
check(git_signature_default(&signature, repo), "Error creating signature", NULL) &&
|
|
check(git_commit_create_v(&commit_oid, repo, "HEAD", signature, signature,
|
|
NULL, commitMessage, tree, parent ? 1 : 0, parent),
|
|
"Error creating commit", NULL)) {
|
|
qCritical() << HEADER;
|
|
qCritical() << "localRepoName" << QString::fromUtf8(localRepoName, strlen(localRepoName));
|
|
qCritical() << " branchName" << QString::fromUtf8(branchName, strlen(branchName));
|
|
qCritical() << " fName" << QString::fromUtf8(fName, strlen(fName));
|
|
qCritical() << "commitMessage" << QString::fromUtf8(commitMessage, strlen(commitMessage));
|
|
qCritical() << " git commit" << "OK";
|
|
}
|
|
|
|
if (index) {
|
|
git_index_free(index);
|
|
}
|
|
if (signature) {
|
|
git_signature_free(signature);
|
|
}
|
|
if (tree) {
|
|
git_tree_free(tree);
|
|
}
|
|
if (parent) {
|
|
git_object_free(parent);
|
|
}
|
|
if (ref) {
|
|
git_reference_free(ref);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
int GitLibrary::PushRepository(char const *localRepoName, char const *branchName,
|
|
char const *userName, char const *userPassword) {
|
|
CWD cwd(localRepoName);
|
|
int error = CheckoutRepository(nullptr, localRepoName, branchName);
|
|
if (error == 0) {
|
|
|
|
git_repository_state_t state = GIT_REPOSITORY_STATE_NONE;
|
|
git_push_options options;
|
|
git_remote_callbacks callbacks;
|
|
git_remote* remote = NULL;
|
|
char refspec_[] = "refs/heads/master";
|
|
char *refspec = refspec_;
|
|
const git_strarray refspecs = {
|
|
&refspec,
|
|
1
|
|
};
|
|
|
|
// std::lock_guard<std::mutex> lock(m);
|
|
|
|
m_userName = QString::fromUtf8(userName, strlen(userName));
|
|
m_userPassword = QString::fromUtf8(userPassword, strlen(userPassword));
|
|
|
|
git_repository *repo = LocalGitRepository::GetInstance(localRepoName)->GetGitRepository();
|
|
|
|
// Make sure we're not about to checkout while something else is going on
|
|
if ((state = (git_repository_state_t)git_repository_state(repo)) != GIT_REPOSITORY_STATE_NONE) {
|
|
qCritical() << HEADER;
|
|
qCritical() << "ERROR repository" << cwd.localRepoDir().absolutePath()
|
|
<< "is in unexpected state" << (int)state;
|
|
} else {
|
|
if (check(git_remote_lookup(&remote, repo, "origin" ), "Unable to lookup remote", NULL)) {
|
|
if (check(git_remote_init_callbacks(&callbacks, GIT_REMOTE_CALLBACKS_VERSION),
|
|
"Error initializing remote callbacks", NULL)) {
|
|
callbacks.credentials = cred_acquire_cb;
|
|
if (check(git_push_options_init(&options, GIT_PUSH_OPTIONS_VERSION ),
|
|
"Error initializing push", NULL)) {
|
|
options.callbacks = callbacks;
|
|
if (check(git_remote_push(remote, &refspecs, &options), "Error pushing", NULL)) {
|
|
qCritical() << HEADER;
|
|
qCritical() << QString("pushed %s (branch: %s").arg(localRepoName).arg(branchName);
|
|
error = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (remote) {
|
|
git_remote_free(remote);
|
|
}
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
int GitLibrary::PullRepository(char const *localRepoName, char const *branchName,
|
|
char const *userName, char const *userPassword) {
|
|
// "git pull" is a basiclly a "git fetch" followed by a "git merge"
|
|
|
|
return 0;
|
|
}
|