pull = fetch/merge

Calculator/main.cpp

@@ -31,11 +31,13 @@ int main(int argc, char *argv[])
         //TariffCalculatorHandle handle = NewTariffCalculator();
         //DeleteTariffCalculator(handle);
 
-        if (InitGitLibrary() > 0) {
+        //if (InitGitLibrary() > 0) {
-            qCritical() << CloneRepository("https://git.mimbach49.de/GerhardHoffmann/customer_999.git", "C:\\tmp\\customer_999");
+        //    qCritical() << CloneRepository("https://git.mimbach49.de/GerhardHoffmann/customer_999.git", "C:\\tmp\\customer_999");
-            qCritical() << CheckoutLocalBranch("C:\\tmp\\customer_999", "master");
+        //    qCritical() << CheckoutLocalBranch("C:\\tmp\\customer_999", "master");
-            ShutdownGitLibrary();
+        //    ShutdownGitLibrary();
-        }
+       // }
+
+    qCritical() << GetFileMenuSize("customer_999");
 #else
     QLibrary library("C:\\build-ATBTariffCalculator-Desktop_Qt_6_5_0_MinGW_64_bit-Release\\CalculatorCInterface\\release\\CalculatorCInterface.dll");
     if (library.load()) {

CalculatorCInterface/CalculatorCInterface.pro

@@ -28,12 +28,17 @@ CONFIG += c++20 console
 
 SOURCES += \
     calculator_c_interface_lib.cpp \
-    tariff_calculator.cpp
+    git_library.cpp \
+    tariff_calculator.cpp \
+    local_git_repository.cpp
 
 HEADERS += \
     calculator_c_interface_lib.h \
     calculator_c_interface_lib_global.h \
-    tariff_calculator.h
+    git_library.h \
+    tariff_calculator.h \
+    local_git_repository.h \
+    global_defines.h
 
 # Default rules for deployment.
 unix {

CalculatorCInterface/calculator_c_interface_lib.cpp

@@ -1,21 +1,26 @@
 #include "calculator_c_interface_lib.h"
+#include "local_git_repository.h"
+#include "git_library.h"
 
 //#include <git2/common.h>
 
 #include <QMap>
 #include <QString>
 #include <QDir>
+#include <QFile>
+#include <QByteArray>
+#include <QRegularExpression>
+#include <QRegularExpressionMatch>
 #include <mutex>
 
 
 #include <git2.h>
 #include <stdio.h>
 #include <stdint.h>
+#include <algorithm>
 
-static QMap<QString, git_repository *> customerRepoMap;
+//static QMap<QString, git_repository *> customerRepoMap;
-static std::mutex m;
+//static std::mutex m;
-static char const *user = NULL;
-static char const *pass = NULL;
 
 #ifndef _WIN32
 # include <unistd.h>
@@ -26,241 +31,6 @@ static char const *pass = NULL;
 extern "C" {
 #endif
 
-// see https://libgit2.org/libgit2/ex/HEAD/checkout.html
-
-/* Define t/he printf format specifier to use for size_t output */
-#if defined(_MSC_VER) || defined(__MINGW32__)
-#	define PRIuZ "Illu"
-#	define PRIxZ "Illx"
-#	define PRIdZ "Illd"
-#else
-#	define PRIuZ "zu"
-#	define PRIxZ "zx"
-#	define PRIdZ "zd"
-#endif
-
-typedef struct {
-    unsigned int force : 1;
-    unsigned int progress : 1;
-    unsigned int perf : 1;
-} checkout_options;
-
-int cred_acquire_cb(git_credential **out,
-                    const char *url,
-                    const char *username_from_url,
-                    unsigned int allowed_types,
-                    void *payload)
-{
-    char const *username = user, *password = pass;
-
-    fprintf(stderr, "%s:%d: opened repository %s %s\n", __func__, __LINE__, username, password);
-
-    Q_UNUSED(url);
-    Q_UNUSED(username_from_url);
-    Q_UNUSED(payload);
-    int error = -1;
-
-    if (allowed_types & GIT_CREDENTIAL_USERPASS_PLAINTEXT) {
-        error = git_credential_userpass_plaintext_new(out, username, password);
-    } else {
-        fprintf(stderr, "GIT_CREDENTIAL_USERPASS_PLAINTEXT not supported by protocol (allowed_types=%08x)\n", allowed_types);
-    }
-
-    return error;
-}
-
-static bool check(int error, const char *message, const char *extra) {
-    const git_error *lg2err;
-    const char *lg2msg = "", *lg2spacer = "";
-
-    if (!error) {
-        return true;
-    }
-
-    if ((lg2err = git_error_last()) != NULL && lg2err->message != NULL) {
-        lg2msg = lg2err->message;
-        lg2spacer = " - ";
-    }
-
-    if (extra)
-        fprintf(stderr, "%s '%s' [%d]%s%s\n",
-                message, extra, error, lg2spacer, lg2msg);
-    else
-        fprintf(stderr, "%s [%d]%s%s\n",
-                message, error, lg2spacer, lg2msg);
-
-    // exit(1);
-    return false;
-}
-
-static void print_checkout_progress(const char *path, size_t completed_steps, size_t total_steps, void *payload) {
-    (void)payload;
-    if (path == NULL) {
-        printf("checkout started: %" PRIuZ " steps\n", total_steps);
-    } else {
-        printf("checkout: %s %" PRIuZ "/%" PRIuZ "\n", path, completed_steps, total_steps);
-    }
-}
-
-static void print_perf_data(const git_checkout_perfdata *perfdata, void *payload) {
-    (void)payload;
-    printf("perf: stat: %" PRIuZ " mkdir: %" PRIuZ " chmod: %" PRIuZ "\n",
-           perfdata->stat_calls, perfdata->mkdir_calls, perfdata->chmod_calls);
-}
-
-static int resolve_refish(git_annotated_commit **commit, git_repository *repo, const char *refish)
-{
-    git_reference *ref;
-    git_object *obj;
-    int err = 0;
-
-    assert(commit != NULL);
-
-    err = git_reference_dwim(&ref, repo, refish);
-    if (err == GIT_OK) {
-        git_annotated_commit_from_ref(commit, repo, ref);
-        git_reference_free(ref);
-        return 0;
-    }
-
-    err = git_revparse_single(&obj, repo, refish);
-    if (err == GIT_OK) {
-        err = git_annotated_commit_lookup(commit, repo, git_object_id(obj));
-        git_object_free(obj);
-    }
-
-    return err;
-}
-
-static int perform_checkout_ref(git_repository *repo,
-                                git_annotated_commit *target,
-                                const char *target_ref, checkout_options *opts) {
-    git_checkout_options checkout_opts;
-    git_reference *ref = NULL, *branch = NULL;
-    git_commit *target_commit = NULL;
-    int err;
-
-    if ((err = git_checkout_options_init(&checkout_opts, GIT_CHECKOUT_OPTIONS_VERSION)) < 0) {
-        fprintf(stderr, "error checkout options init %s\n", git_error_last()->message);
-        return err;
-    }
-
-    // Setup our checkout options from the parsed options
-
-    checkout_opts.checkout_strategy = GIT_CHECKOUT_SAFE;
-
-    // if (opts->force)
-    //    checkout_opts.checkout_strategy = GIT_CHECKOUT_FORCE;
-
-    // if (opts->progress)
-    //    checkout_opts.progress_cb = print_checkout_progress;
-
-    // if (opts->perf)
-    //    checkout_opts.perfdata_cb = print_perf_data;
-
-    // Grab the commit we're interested to move to
-
-    err = git_commit_lookup(&target_commit, repo, git_annotated_commit_id(target));
-    if (err != 0) {
-        fprintf(stderr, "failed to lookup commit: %s\n", git_error_last()->message);
-        goto cleanup;
-    }
-
-    // Perform the checkout so the workdir corresponds to what target_commit contains.
-    // Note that it's okay to pass a git_commit here, because it will be peeled to a tree.
-
-    err = git_checkout_tree(repo, (const git_object *)target_commit, &checkout_opts);
-    if (err != 0) {
-        fprintf(stderr, "failed to checkout tree: %s\n", git_error_last()->message);
-        goto cleanup;
-    }
-
-    // Now that the checkout has completed, we have to update HEAD.
-    // Depending on the "origin" of target (ie. it's an OID or a branch name), we might need to detach HEAD.
-
-    if (git_annotated_commit_ref(target)) {
-        const char *target_head;
-
-        if ((err = git_reference_lookup(&ref, repo, git_annotated_commit_ref(target))) < 0)
-            goto error;
-
-        if (git_reference_is_remote(ref)) {
-            if ((err = git_branch_create_from_annotated(&branch, repo, target_ref, target, 0)) < 0)
-                goto error;
-            target_head = git_reference_name(branch);
-        } else {
-            target_head = git_annotated_commit_ref(target);
-        }
-
-        err = git_repository_set_head(repo, target_head);
-    } else {
-        err = git_repository_set_head_detached_from_annotated(repo, target);
-    }
-
-error:
-    if (err != 0) {
-        fprintf(stderr, "failed to update HEAD reference: %s\n", git_error_last()->message);
-        goto cleanup;
-    }
-
-cleanup:
-    git_commit_free(target_commit);
-    git_reference_free(branch);
-    git_reference_free(ref);
-
-    return err;
-}
-
-static int guess_refish(git_annotated_commit **out, git_repository *repo, const char *ref) {
-    git_strarray remotes = { NULL, 0 };
-    git_reference *remote_ref = NULL;
-    int error;
-    size_t i;
-
-    if ((error = git_remote_list(&remotes, repo)) < 0) {
-        fprintf(stderr, "error git_remote_list %s\n", git_error_last()->message);
-        goto out;
-    }
-
-    for (i = 0; i < remotes.count; i++) {
-        char *refname = NULL;
-        size_t reflen;
-
-        reflen = snprintf(refname, 0, "refs/remotes/%s/%s", remotes.strings[i], ref);
-        if ((refname = (char *)malloc(reflen + 1)) == NULL) {
-            error = -1;
-            fprintf(stderr, "%s:%d malloc failed\n", __func__, __LINE__);
-            goto next;
-        }
-        snprintf(refname, reflen + 1, "refs/remotes/%s/%s", remotes.strings[i], ref);
-
-        if ((error = git_reference_lookup(&remote_ref, repo, refname)) < 0) {
-            fprintf(stderr, "git reference lookup %s\n", git_error_last()->message);
-            goto next;
-        }
-
-        break;
-    next:
-        free(refname);
-        refname = NULL;
-        if (error < 0 && error != GIT_ENOTFOUND) {
-            break;
-        }
-    }
-
-    if (!remote_ref) {
-        error = GIT_ENOTFOUND;
-        goto out;
-    }
-
-    if ((error = git_annotated_commit_from_ref(out, repo, remote_ref)) < 0)
-        goto out;
-
-out:
-    git_reference_free(remote_ref);
-    git_strarray_dispose(&remotes);
-    return error;
-}
 
 TariffCalculatorHandle NewTariffCalculator(void) {
     return new TariffCalculator();
@@ -270,326 +40,108 @@ void DeleteTariffCalculator(TariffCalculatorHandle handle) {
     delete handle;
 }
 
-int InitGitLibrary(void) {
+int InitGitLibraryInternal(void) {
-    return git_libgit2_init();
+    return GitLibrary::Init();
 }
 
-int ShutdownGitLibrary(void) {
+int ShutdownGitLibraryInternal(void) {
-
+    LocalGitRepository::DestroyAllRepositories();
-    for (auto key : customerRepoMap.keys()) {
+    return GitLibrary::Shutdown();
-        git_repository_free(customerRepoMap.value(key));
-    }
-    customerRepoMap.clear();
-    return git_libgit2_shutdown();
 }
 
-int CloneRepository(char const *url, char const *local_path) {
+int CloneRepositoryInternal(char const *url, char const *local_path) {
-
+    return GitLibrary::CloneRepository(url, local_path);
-    QString localRepoPath(QDir::cleanPath(QString(local_path) + QDir::separator() + ".git"));
-    QDir localRepoDir(localRepoPath);
-
-    if (localRepoDir.exists()) {
-        fprintf(stderr, "local repository path %s already exists\n",
-                localRepoPath.toUtf8().constData());
-        return -1;
 }
 
-    git_repository *out;
+int CheckoutRepositoryInternal(char const *url, char const *localRepoName, char const *branchName) {
-    git_clone_options opts;
+    return GitLibrary::CheckoutRepository(url, localRepoName, branchName);
-    int res = 0;
-
-    if ((res = git_clone_options_init(&opts, GIT_CLONE_OPTIONS_VERSION)) == 0) {
-        opts.checkout_branch = "master";
-
-        fprintf(stderr, "%s:%d %s %s\n", __func__, __LINE__, url, local_path);
-
-        if ((res = git_clone(&out, url, local_path, &opts)) < 0) {
-            git_error const *error = git_error_last();
-            fprintf(stderr, "%s:%d error: %s\n", __func__, __LINE__, error->message);
-        } else {
-            QString localRepoPath = QDir::cleanPath(QString(local_path) + QDir::separator() + ".git");
-            customerRepoMap.insert(localRepoPath, out);
-        }
-    } else {
-        git_error const *error = git_error_last();
-        fprintf(stderr, "%s:%d error: %s\n", __func__, __LINE__, error->message);
-    }
-    return res;
 }
 
-int CheckoutLocalBranch(char const *local_path, char const *branch_name) {
+int CommitFileInternal(char const *localRepoName, char const *branchName,
-    int err = 0;
+                       char const *fName, char const *commitMessage) {
-    checkout_options opts;
+    return GitLibrary::CommitFile(localRepoName, branchName, fName, commitMessage);
-    git_repository_state_t state = GIT_REPOSITORY_STATE_NONE;
-    git_annotated_commit *checkout_target = NULL;
-    git_repository *repo = NULL;
-    git_reference *branch_ref = NULL;
-
-    QString localRepoPath(QDir::cleanPath(QString(local_path) + QDir::separator() + ".git"));
-    QDir localRepoDir(localRepoPath);
-
-    if (!localRepoDir.exists()) {
-        fprintf(stderr, "local repository path %s does not exist\n",
-                localRepoPath.toUtf8().constData());
-        return -1;
 }
 
-    if (!customerRepoMap.contains(localRepoPath)) {
+int PushRepositoryInternal(char const *localRepoName, char const *branchName,
-        if ((err = git_repository_open(&repo, localRepoPath.toUtf8().constData())) != 0) {
+                           char const *userName, char const *userPassword) {
-            fprintf(stderr, "repository %s cannot be opened: %s\n",
+    return GitLibrary::PushRepository(localRepoName, branchName, userName, userPassword);
-                    localRepoPath.toUtf8().constData(), git_error_last()->message);
-            return -1;
-        }
-        customerRepoMap.insert(localRepoPath, repo);
 }
 
-    if (customerRepoMap.contains(localRepoPath)) {
+int PullRepositoryInternal(char const *localRepoName, char const *remoteRepoName) {
-        repo = customerRepoMap[localRepoPath];
+    return GitLibrary::PullRepository(localRepoName, remoteRepoName);
-
-        // 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) {
-            fprintf(stderr, "repository %s is in unexpected state %d\n",
-                    localRepoPath.toUtf8().constData(), state);
-            err = -1;
-        } else {
-            fprintf(stderr, "repository %s is in state %d\n",
-                    localRepoPath.toUtf8().constData(), state);
-
-            if ((err = resolve_refish(&checkout_target, repo, branch_name)) < 0 &&
-                (err = guess_refish(&checkout_target, repo, branch_name)) < 0) {
-                fprintf(stderr, "failed to resolve %s: %s\n", branch_name, git_error_last()->message);
-            } else {
-                if ((err = perform_checkout_ref(repo, checkout_target, branch_name, &opts)) == 0) {
-                    fprintf(stderr, "%s:%d checkout ok\n", __func__, __LINE__);
-                    if ((err = git_branch_lookup(&branch_ref, repo, branch_name, GIT_BRANCH_LOCAL)) != 0) {
-                        if (err == GIT_ENOTFOUND) {
-                            fprintf(stderr, "local branch %s not found\n", branch_name);
-                        } else {
-                            fprintf(stderr, "local branch %s not found: %s\n",
-                                    branch_name, git_error_last()->message);
-                        }
-                    }
-                }
-            }
-        }
 }
 
-    if (branch_ref) {
+#include <local_git_repository.h>
-        git_reference_free(branch_ref);
+
+
+void SetReposRootDirectoryInternal(char const *p) {
+    LocalGitRepository::SetReposRootDirectory(QString::fromUtf8(p));
 }
 
-    if (checkout_target) {
+char const *GetReposRootDirectoryInternal() {
-        git_annotated_commit_free(checkout_target);
+    return (char const *)LocalGitRepository::GetReposRootDirectory().constData();
 }
 
-    return err;
+char const *GetLocalRepositoryPathInternal(char const *localGitRepo) {
+    return (char const *)LocalGitRepository::GetInstance(localGitRepo)->localRepositoryPath().constData();
 }
 
-int CommitFile(char const *local_path, char const *branch_name,
+int32_t GetFileMenuSizeInternal(char const *localGitRepo) {
-               char const *file_name, char const *comment) {
+    return LocalGitRepository::GetInstance(localGitRepo)->GetFileMenuSizeInternal();
-    assert(local_path != NULL);
-    assert(branch_name != NULL);
-    assert(file_name != NULL);
-    assert(comment != NULL);
-
-    fprintf(stderr, "%s %s %s %s\n",
-            local_path, branch_name, file_name, comment);
-
-    QString const currentWD = QDir::currentPath();
-
-    QString localPath(local_path);
-    if (!QDir(localPath).exists()) {
-        fprintf(stderr, "local path %s for file %s does not exist\n",
-                localPath.toUtf8().constData(), file_name);
-        QDir::setCurrent(currentWD);
-        return -1;
 }
 
-    if (!QDir::setCurrent(localPath)) {
+char const *GetFileMenuInternal(const char *localGitRepo) {
-        fprintf(stderr, "can not set cwd path %s\n", localPath.toUtf8().constData());
+    QByteArray const &a = LocalGitRepository::GetInstance(localGitRepo)->GetFileMenuInternal().constData();
-        QDir::setCurrent(currentWD);
+    if (a.isValidUtf8()) {
-        return -1;
+        int const len = GetFileMenuSizeInternal(localGitRepo);
-    }
+        if (len > 0) {
-
+            char *json = new char [len+1];
-    fprintf(stderr, "cwd %s\n", QDir::current().absolutePath().toUtf8().constData());
+            // fprintf(stderr, "allocate pointer %p\n", json);
-
+            memset(json, 0x00, len+1);
-    git_repository *repo = NULL;
+            memcpy(json, a.constData(), std::min(len, (int)a.size()));
-    int error = 0;
+            return json;
-
-    QString localRepoPath(QDir::cleanPath(QString(local_path) + QDir::separator() + ".git"));
-    QDir localRepoDir(localRepoPath);
-
-    if (!localRepoDir.exists()) {
-        fprintf(stderr, "local repository path %s does not exist\n",
-                localRepoPath.toUtf8().constData());
-        QDir::setCurrent(currentWD);
-        return -1;
-    }
-
-    if (!customerRepoMap.contains(localRepoPath)) {
-        if ((error = git_repository_open(&repo, localRepoPath.toUtf8().constData())) != 0) {
-            fprintf(stderr, "repository %s cannot be opened: %s\n",
-                    localRepoPath.toUtf8().constData(), git_error_last()->message);
-            QDir::setCurrent(currentWD);
-            return -1;
-        }
-        customerRepoMap.insert(localRepoPath, repo);
-    }
-
-    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 (customerRepoMap.contains(localRepoPath)) {
-        repo = customerRepoMap[localRepoPath];
-
-        if (git_repository_head_unborn(repo) == 1) {
-            fprintf(stderr, "HEAD unborn. Create first commit\n");
-            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) {
-            fprintf(stderr, "repository %s is in unexpected state %d\n",
-                    localRepoPath.toUtf8().constData(), state);
-            error = -1;
-        } else {
-            error = git_revparse_ext(&parent, &ref, repo, "HEAD");
-            if (error == GIT_ENOTFOUND) {
-                fprintf(stderr, "HEAD not found. Creating first commit\n");
-                error = 0;
-            } else if (error != 0) {
-                const git_error *err = git_error_last();
-                if (err) {
-                    fprintf(stderr, "ERROR %d: %s\n", err->klass, err->message);
-                } else {
-                    fprintf(stderr, "ERROR %d: no detailed info\n", error);
         }
     }
-
+    return nullptr;
-            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, comment, tree, parent ? 1 : 0, parent),
-                                              "Error creating commit", NULL)) {
-                    fprintf(stderr, "%s %s %s %s\n",
-                        local_path, branch_name, file_name, comment);
-                    fprintf(stderr, "git commit ok\n");
-                }
-
-                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);
-                }
-            }
-        }
-    }
-
-    QDir::setCurrent(currentWD);
-    return error;
-}
-
-int PushLocalRepository(char const *local_path, char const *branch_name, char const *username, char const *password) {
-    git_repository *repo = NULL;
-    int error = -1;
-
-    fprintf(stderr, "%s:%d: %s %s\n", __func__, __LINE__, local_path, branch_name);
-
-    QString const currentWD = QDir::currentPath();
-
-    QString localRepoPath(QDir::cleanPath(QString(local_path) + QDir::separator() + ".git"));
-    QDir localRepoDir(localRepoPath);
-
-    if (!localRepoDir.exists()) {
-        fprintf(stderr, "local repository path %s does not exist\n",
-                localRepoPath.toUtf8().constData());
-        QDir::setCurrent(currentWD);
-        return -1;
-    }
-
-    if (!customerRepoMap.contains(localRepoPath)) {
-        if ((error = git_repository_open(&repo, localRepoPath.toUtf8().constData())) != 0) {
-            fprintf(stderr, "repository %s cannot be opened: %s\n",
-                    localRepoPath.toUtf8().constData(), git_error_last()->message);
-            QDir::setCurrent(currentWD);
-            return -1;
-        }
-        customerRepoMap.insert(localRepoPath, repo);
-    }
-
-    fprintf(stderr, "%s:%d: opened repository\n", __func__, __LINE__);
-
-    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);
-
-    user = username;
-    pass = password;
-
-    fprintf(stderr, "%s:%d: opened repository %s %s\n", __func__, __LINE__, user, pass);
-
-    if (customerRepoMap.contains(localRepoPath)) {
-        repo = customerRepoMap[localRepoPath];
-
-        // 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) {
-            fprintf(stderr, "repository %s is in unexpected state %d\n",
-                    localRepoPath.toUtf8().constData(), 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)) {
-                            fprintf(stderr, "%s:%d: pushed %s (branch: %s)\n", __func__, __LINE__, local_path, branch_name);
-                            error = 0;
-                        }
-                    }
-                }
-            }
-        }
-    }
-
-    if (remote) {
-        git_remote_free(remote);
-    }
-
-    QDir::setCurrent(currentWD);
-    return error;
 }
 
 
+char const *GetFileNameInternal(char const *localGitRepo, char const *fileId) {
+    QByteArray const &a = LocalGitRepository::GetInstance(localGitRepo)->GetFileNameInternal(fileId);
+    if (a.isValidUtf8()) {
+        char *c = new char[a.size() + 1];
+        memset(c, 0x00, a.size() + 1);
+        memcpy(c, a.constData(), a.size());
+        return c;
+    }
+    return nullptr;
+}
+
+int32_t GetFileSize(char const *localGitRepo, char const *fileId) {
+    return LocalGitRepository::GetInstance(localGitRepo)->GetFileSize(fileId);
+}
+
+char const *GetFileInternal(char const *localGitRepo, char const *fileId) {
+    QByteArray const &a = LocalGitRepository::GetInstance(localGitRepo)->GetFileInternal(fileId);
+    if (a.isValidUtf8()) {
+        char *c = new char[a.size() + 1];
+        memset(c, 0x00, a.size() + 1);
+        memcpy(c, a.constData(), a.size());
+        return c;
+    }
+    return nullptr;
+}
+
+bool SetFileInternal(char const *localGitRepo, char const *fileId, char const *json, int size) {
+    return LocalGitRepository::GetInstance(localGitRepo)->SetFileInternal(QString(fileId), QByteArray(json, size));
+}
+
+void DeleteMem(char *p) {
+    if (p) {
+        // fprintf(stderr, "delete pointer %p\n", p);
+        delete p;
+    }
+}
 
 #ifdef __cplusplus
 }

CalculatorCInterface/calculator_c_interface_lib.h

@@ -1,6 +1,5 @@
 #ifndef CALCULATOR_C_INTERFACE_LIB_H_INCLUDED
 #define CALCULATOR_C_INTERFACE_LIB_H_INCLUDED
-
 #include "calculator_c_interface_lib_global.h"
 #include "tariff_calculator.h"
 
@@ -10,16 +9,31 @@ typedef TariffCalculator *TariffCalculatorHandle;
 extern "C" {
 #endif
 
+void DeleteMem(char *p) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+void SetReposRootDirectoryInternal(char const *p) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+char const *GetReposRootDirectoryInternal() CALCULATOR_C_INTERFACE_LIB_EXPORT;
+char const *GetLocalRepositoryPathInternal(char const *localRepo) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+
+// interface for menu of webpage
+char const *GetFileMenuInternal(char const *localRepo) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+int32_t GetFileMenuSizeInternal(char const *localRepo) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+
+char const *GetFileNameInternal(char const *localRepo, char const *fileId) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+int32_t GetFileSize(char const *localRepo, char const *fileId) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+char const *GetFileInternal(char const *localRepo, char const *fileId) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+bool SetFileInternal(char const *localRepo, char const *fileId, char const *json, int size) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+
 TariffCalculatorHandle NewTariffCalculator(void) CALCULATOR_C_INTERFACE_LIB_EXPORT;
 void DeleteTariffCalculator(TariffCalculatorHandle handle) CALCULATOR_C_INTERFACE_LIB_EXPORT;
 
 // libgit2
-int InitGitLibrary(void) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+int InitGitLibraryInternal(void) CALCULATOR_C_INTERFACE_LIB_EXPORT;
-int ShutdownGitLibrary(void) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+int ShutdownGitLibraryInternal(void) CALCULATOR_C_INTERFACE_LIB_EXPORT;
-int CloneRepository(char const *url, char const *local_path) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+int CloneRepositoryInternal(char const *url, char const *local_path) CALCULATOR_C_INTERFACE_LIB_EXPORT;
-int CheckoutLocalBranch(char const *local_path, char const *branch) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+int CheckoutRepositoryInternal(char const *url, char const *localRepoName, char const *branchName) CALCULATOR_C_INTERFACE_LIB_EXPORT;
-int CommitFile(char const *local_path, char const *branch_name, char const *file_name, char const *commit_message) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+int CommitFileInternal(char const *local_path, char const *branch_name, char const *file_name, char const *commit_message) CALCULATOR_C_INTERFACE_LIB_EXPORT;
-int PushLocalRepository(char const *local_path, char const *branch_name, char const *user, char const *password) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+int PushRepositoryInternal(char const *local_path, char const *branch_name, char const *user, char const *password) CALCULATOR_C_INTERFACE_LIB_EXPORT;
+int PullRepositoryInternal(char const *localRepoName, char const *remoteRepoName) CALCULATOR_C_INTERFACE_LIB_EXPORT;
 
 #ifdef __cplusplus
 }

CalculatorCInterface/git_library.h

@@ -0,0 +1,47 @@
+#ifndef GIT_LIBRARY_H_INCLUDED
+#define GIT_LIBRARY_H_INCLUDED
+
+#include <QByteArray>
+#include <QString>
+#include <QJsonDocument>
+#include <QJsonArray>
+#include <QJsonObject>
+#include <QDir>
+#include <git2.h>
+
+class CWD {
+    QDir m_prev;
+    QDir m_localRepoDir;
+    QDir m_localRepoGitDir;
+    bool m_valid;
+public:
+    CWD(QString const &localRepoName);
+    ~CWD();
+
+    QDir const &localRepoDir() const { return m_localRepoDir; }
+    QDir &localRepoDir() { return m_localRepoDir; }
+    QDir const &localRepoGitDir() const { return m_localRepoGitDir; }
+    QDir &localRepoGitDir() { return m_localRepoGitDir; }
+};
+
+class GitLibrary {
+    static QString m_userName;
+    static QString m_userPassword;
+public:
+    static QString &userName() { return m_userName; }
+    static QString &userPassword() { return m_userPassword; }
+
+    static int Init();
+    static int Shutdown();
+    static int CloneRepository(char const *url, char const *localRepoName);
+    static int CheckoutRepository(char const *url, char const *localRepoName, char const *branchName);
+    static int CommitRepository(char const *localRepoName, char const *branchName, char const *commitMessage);
+    static int CommitFile(char const *localRepoName, char const *branchName, char const *fName, char const *commitMessage);
+    static int PushRepository(char const *localRepoName, char const *branchName, char const *userName, char const *userPassword);
+    static int PullRepository(char const *localRepoName, char const *remoteRepoName);
+
+    // explicit GitLibrary();
+    // ~GitLibrary();
+};
+
+#endif // #define GIT_LIBRARY_H_INCLUDED

CalculatorCInterface/global_defines.h

@@ -0,0 +1,7 @@
+#ifndef GLOBAL_DEFINES_H_INCLUDED
+#define GLOBAL_DEFINES_H_INCLUDED
+
+#define HEADER __func__ << "(" << __LINE__ << ")"
+
+#endif // GLOBAL_DEFINES_H_INCLUDED
+

CalculatorCInterface/local_git_repository.cpp

@@ -0,0 +1,212 @@
+#include "local_git_repository.h"
+#include "git_library.h"
+
+#include <QDebug>
+#include <QDir>
+#include <QFile>
+#include <QTextStream>
+#include <QJsonDocument>
+#include <QByteArray>
+#include <QRegularExpression>
+#include <QRegularExpressionMatch>
+#include <QFile>
+
+
+QString LocalGitRepository::repoRootDirectory = "";
+QMap<QString, LocalGitRepository *> LocalGitRepository::localGitRepos;
+
+QMap<QString, LocalGitRepository *> &LocalGitRepository::GetLocalGitRepos() {
+    return localGitRepos;
+}
+
+void LocalGitRepository::SetReposRootDirectory(QString s) {
+    if (repoRootDirectory.isEmpty()) {
+        repoRootDirectory = s;
+        return;
+    }
+    qCritical() << __func__ << ":" << __LINE__
+                << "ERROR git-repository-root-directory already set"
+                << repoRootDirectory;
+}
+
+QString LocalGitRepository::GetReposRootDirectory() {
+    return repoRootDirectory;
+}
+
+LocalGitRepository::LocalGitRepository(QString const &localRepository)
+    : m_localRepository(localRepository)
+    , m_fileMenu("{}")
+    , m_fileMenuSize(-1)
+    , m_git_repository(nullptr) {
+}
+
+LocalGitRepository::~LocalGitRepository() {
+}
+
+void LocalGitRepository::SetGitRepository(git_repository *git_repo) {
+    m_git_repository = git_repo;
+}
+
+git_repository const *LocalGitRepository::GetGitRepository() const {
+    return m_git_repository;
+}
+
+git_repository *LocalGitRepository::GetGitRepository() {
+    return m_git_repository;
+}
+
+QString LocalGitRepository::localRepositoryName() const { // e.g. customer_999
+    return m_localRepository;
+}
+
+QString LocalGitRepository::localRepositoryPath() const {
+    if (!repoRootDirectory.isEmpty()) {
+        return QDir::cleanPath(repoRootDirectory + QDir::separator() + m_localRepository);
+    }
+    qCritical() << __func__ << ":" << __LINE__
+                << "ERROR git-repository-root-directory not set";
+    return "";
+}
+
+QString LocalGitRepository::localRepositoryPath(QString const &localRepository) {
+    if (!repoRootDirectory.isEmpty()) {
+        return QDir::cleanPath(repoRootDirectory + QDir::separator() + localRepository);
+    }
+    qCritical() << __func__ << ":" << __LINE__
+                << "ERROR git-repository-root-directory not set";
+    return "";
+}
+
+LocalGitRepository *LocalGitRepository::GetInstance(QString const& localRepository) {
+    LocalGitRepository *repo = nullptr;
+    if (GetLocalGitRepos().count(localRepository) > 0) {
+        repo = GetLocalGitRepos()[localRepository];
+    } else {
+        repo = new LocalGitRepository(localRepository);
+        qCritical() << "created local git-repository" << localRepository;
+        GetLocalGitRepos().insert(localRepository, repo);
+    }
+    if (repo == nullptr) {
+        qCritical() << __func__ << ":" << __LINE__
+                    << "ERROR: could not find local git-repository" << localRepository;
+    }
+    return repo;
+}
+
+bool LocalGitRepository::DestroyInstance(QString const &localRepository) {
+    if (GetLocalGitRepos().count(localRepository) > 0) {
+        LocalGitRepository *repo = GetLocalGitRepos().take(localRepository);
+        delete repo;
+        qCritical() << "deleted local git-repository" << localRepository;
+        return true;
+    }
+    qCritical() << __func__ << ":" << __LINE__
+                << "ERROR: could not find local git-repository" << localRepository;
+    return false;
+}
+
+void LocalGitRepository::DestroyAllRepositories() {
+    for (auto it = GetLocalGitRepos().keyValueBegin(); it != GetLocalGitRepos().keyValueEnd(); ++it) {
+        QString const &key = it->first;
+        LocalGitRepository *repo = GetLocalGitRepos()[key];
+        delete repo;
+        qCritical() << "deleted local git-repository" << key;
+    }
+    GetLocalGitRepos().clear();
+}
+
+int32_t LocalGitRepository::GetFileMenuSizeInternal() const {
+    return m_fileMenuSize;
+}
+
+QByteArray LocalGitRepository::GetFileMenuInternal() {
+    if (m_fileMenuSize == -1) {
+        QFile f(QDir::cleanPath(repoRootDirectory + QDir::separator()
+                              + m_localRepository + QDir::separator()
+                              + "etc/psa_webinterface/menu_config.json"));
+        if (f.exists()) {
+            if (f.open(QIODevice::ReadOnly | QIODevice::Text)) {
+                m_fileMenu = QTextStream(&f).readAll().toUtf8();
+
+                if (m_fileMenu.isValidUtf8()) {
+                    QString const &s = QString::fromUtf8(m_fileMenu);
+                    m_fileMenuSize = s.toLocal8Bit().size();
+                }
+            }
+        }
+    }
+    return m_fileMenu;
+}
+
+QByteArray LocalGitRepository::GetFileNameInternal(QString const &fId) {
+    QRegularExpressionMatch match;
+    static const QRegularExpression re("(master|[0-9]+)");
+    if (fId.lastIndexOf(re, -1, &match) != -1) {
+        int idx = fId.indexOf("/");
+        if (idx != -1) {
+            QString path = fId.mid(idx);
+            idx = path.indexOf(":");
+            if (idx != -1) {
+                path = path.mid(0, idx);
+                QString s = match.captured(match.lastCapturedIndex());
+                if (s != "master") {
+                    if (fId.contains("psa_tariff")) {
+                        QString fn(QDir::cleanPath(
+                            repoRootDirectory + QDir::separator() +
+                            QString(m_localRepository) + QDir::separator()
+                            + path + QDir::separator()
+                            + QString("tariff%1.json").arg(s.toUInt(), 2, 10, QChar('0'))));
+                        return fn.toUtf8();
+                    }
+                }
+            }
+        }
+    }
+    return QByteArray();
+}
+
+QByteArray LocalGitRepository::GetFileInternal(QString const &fId) {
+    QByteArray a = GetFileNameInternal(fId);
+    if (a.isValidUtf8()) {
+        QFile fn(a);
+        if (fn.exists()) {
+            if (fn.open(QIODevice::ReadOnly)) {
+                return fn.readAll();
+            }
+        }
+    }
+
+    return QByteArray("{}");
+}
+
+int32_t LocalGitRepository::GetFileSize(QString const &fId) {
+    QByteArray a = GetFileNameInternal(fId);
+    if (a.isValidUtf8()) {
+        QFile fn(a);
+        if (fn.exists()) {
+            return fn.size();
+        }
+    }
+    return -1;
+}
+
+bool LocalGitRepository::SetFileInternal(QString const &fId, QByteArray const &json) {
+    QByteArray a = GetFileNameInternal(fId);
+    if (a.isValidUtf8()) {
+        QFile fn(a);
+        if (fn.exists()) {
+            if (fn.open(QIODevice::WriteOnly)) {
+                qint64 bytesWritten = 0;
+                qint64 bytesToWrite = json.size();
+                while (bytesToWrite > 0 &&
+                      (bytesWritten = fn.write(json.constData(), bytesToWrite)) != -1) {
+                    bytesToWrite -= bytesWritten;
+                }
+                fn.flush();
+                return (bytesToWrite == 0);
+            }
+        }
+
+    }
+    return false;
+}

CalculatorCInterface/local_git_repository.h

@@ -0,0 +1,58 @@
+#ifndef LOCAL_GIT_REPOSITORY_H_INCLUDED
+#define LOCAL_GIT_REPOSITORY_H_INCLUDED
+
+#include <QByteArray>
+#include <QString>
+#include <QJsonDocument>
+#include <QJsonArray>
+#include <QJsonObject>
+#include <QDir>
+#include <QMap>
+
+#include <git2.h>
+
+class GitLibrary;
+class LocalGitRepository {
+    friend class GitLibrary;
+    QString m_localRepository;
+    mutable QByteArray m_fileMenu;
+    mutable int32_t m_fileMenuSize;
+    git_repository *m_git_repository;
+
+    static QString repoRootDirectory;
+    static QMap<QString, LocalGitRepository *> localGitRepos;
+
+protected: // force heap-based objects
+    LocalGitRepository(QString const &localRepository);
+    ~LocalGitRepository();
+
+public:
+    static void SetReposRootDirectory(QString s);
+    static QString GetReposRootDirectory();
+
+    static LocalGitRepository *GetInstance(QString const &localRepository);
+    static bool DestroyInstance(QString const &localRepository);
+    static void DestroyAllRepositories();
+
+    static QMap<QString, LocalGitRepository *> &GetLocalGitRepos();
+
+    QString localRepositoryName() const;
+    QString localRepositoryPath() const;
+
+    void SetGitRepository(git_repository *git_repo);
+    git_repository const *GetGitRepository() const;
+    git_repository *GetGitRepository();
+
+    static QString localRepositoryPath(QString const &localRepository);
+
+    QByteArray GetFileMenuInternal();
+    int32_t GetFileMenuSizeInternal() const;
+
+    QByteArray GetFileNameInternal(QString const &fileId);
+    int32_t GetFileSize(QString const &fileId);
+    QByteArray GetFileInternal(QString const &fileId);
+
+    bool SetFileInternal(QString const &fileId, QByteArray const &json);
+};
+
+#endif // LOCAL_GIT_REPOSITORY_H_INCLUDED