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/* * svn-fast-export.c * ---------- *  Walk through each revision of a local Subversion repository and export it *  in a stream that git-fast-import can consume. * * Author: Chris Lee <clee@kde.org> * License: MIT <http://www.opensource.org/licenses/mit-license.php> */#define _XOPEN_SOURCE#include <unistd.h>#include <string.h>#include <stdio.h>#include <time.h>#ifndef PATH_MAX#define PATH_MAX 4096#endif#include <apr_lib.h>#include <apr_getopt.h>#include <apr_general.h>#include <svn_fs.h>#include <svn_pools.h>#include <svn_repos.h>#include <svn_types.h>#include <QByteArray>#include <QStringList>#include <QSet>#undef SVN_ERR#define SVN_ERR(expr) SVN_INT_ERR(expr)QSet<QByteArray> seen_branches;time_t get_epoch(char *svn_date){    struct tm tm;    memset(&tm, 0, sizeof tm);    QByteArray date(svn_date, strlen(svn_date) - 8);    strptime(date, "%Y-%m-%dT%H:%M:%S", &tm);    return mktime(&tm);}int dump_blob(svn_fs_root_t *root, char *full_path, apr_pool_t *pool){    svn_stream_t   *stream, *outstream;    svn_filesize_t stream_length;    SVN_ERR(svn_fs_file_length(&stream_length, root, full_path, pool));    SVN_ERR(svn_fs_file_contents(&stream, root, full_path, pool));    fprintf(stdout, "data %lu\n", long(stream_length));    fflush(stdout);    SVN_ERR(svn_stream_for_stdout(&outstream, pool));    SVN_ERR(svn_stream_copy(stream, outstream, pool));    fprintf(stdout, "\n");    fflush(stdout);    return 0;}int export_revision(svn_revnum_t rev, svn_fs_t *fs, apr_pool_t *pool){    unsigned int         mark, count, total;    const void           *key;    void                 *val;    apr_pool_t           *revpool;    apr_hash_t           *changes, *props;    apr_hash_index_t     *i;    svn_string_t         *author, *svndate, *svnlog;    svn_fs_root_t        *fs_root;    svn_fs_path_change_t *change;    fprintf(stderr, "Exporting revision %ld... ", rev);    SVN_ERR(svn_fs_revision_root(&fs_root, fs, rev, pool));    SVN_ERR(svn_fs_paths_changed(&changes, fs_root, pool));    SVN_ERR(svn_fs_revision_proplist(&props, fs, rev, pool));    revpool = svn_pool_create(pool);    QStringList file_changes;    mark = 1;    QByteArray branch = "master";    fputs("\033[s", stderr);    total = apr_hash_count(changes);    count = 0;    for (i = apr_hash_first(pool, changes); i; i = apr_hash_next(i)) {        svn_pool_clear(revpool);        apr_hash_this(i, &key, NULL, &val);        change = (svn_fs_path_change_t *)val;        QByteArray realpath = (char *)key;        ++count;        svn_boolean_t        is_dir;        SVN_ERR(svn_fs_is_dir(&is_dir, fs_root, realpath, revpool));        if (is_dir) {            continue;        }        QByteArray path = realpath;        if (path.startsWith("/qt-4.2/trunk/")) {            path.remove(0, sizeof "/qt-4.2/trunk/" - 1);        } else if (path.startsWith("/qt/trunk/")) {            path.remove(0, sizeof "/qt/trunk/" - 1);        } else if (path.startsWith("/qt/4.")) {            path.remove(0, sizeof "/qt/" - 1);            branch = "qt-" + path.left(3);            path.remove(0, sizeof "4.x/" - 1);        } else {            continue;        }        if (path.startsWith("doc/"))            continue;        if (change->change_kind == svn_fs_path_change_delete) {            file_changes += QString::fromLatin1("D %1").arg(QLatin1String(path));            fprintf(stderr, "\033[u%u%% %s D %s\033[K",                    count * 100 / total, branch.constData(),                    path.constData());        } else {            file_changes += QString::fromLatin1("M 644 :%1 %2").arg(mark).arg(QLatin1String(path));            fprintf(stderr, "\033[u%u%% %s M %s\033[K",                    count * 100 / total, branch.constData(),                    path.constData());            fprintf(stdout, "blob\nmark :%u\n", mark++);            dump_blob(fs_root, realpath.data(), revpool);        }    }    if (file_changes.isEmpty()) {        fprintf(stderr, "skipping.\n");        svn_pool_destroy(revpool);        return 0;    }    author = (svn_string_t*)apr_hash_get(props, "svn:author", APR_HASH_KEY_STRING);    if (svn_string_isempty(author))        author = svn_string_create("nobody", pool);    svndate = (svn_string_t*)apr_hash_get(props, "svn:date", APR_HASH_KEY_STRING);    svnlog = (svn_string_t*)apr_hash_get(props, "svn:log", APR_HASH_KEY_STRING);    fprintf(stdout, "commit refs/heads/%s\n", branch.constData());    fprintf(stdout, "committer %s <%s@localhost> %ld -0000\n", author->data, author->data, get_epoch((char *)svndate->data));    fprintf(stdout, "data %d\n", svnlog->len);    fputs(svnlog->data, stdout);    fprintf(stdout, "\n");    if (!seen_branches.contains(branch)) {        fprintf(stdout, "from refs/heads/master\n");        seen_branches += branch;    }    fputs(file_changes.join("\n").toLatin1(), stdout);    fprintf(stdout, "\n\n");    fflush(stdout);    svn_pool_destroy(revpool);    fprintf(stderr, "\033[udone!\033[K\n");    return 0;}int crawl_revisions(char *repos_path){    apr_pool_t   *pool, *subpool;    svn_repos_t  *repos;    svn_fs_t     *fs;    svn_revnum_t youngest_rev, min_rev, max_rev, rev;    pool = svn_pool_create(NULL);    SVN_ERR(svn_fs_initialize(pool));    SVN_ERR(svn_repos_open(&repos, repos_path, pool));    fs = svn_repos_fs(repos);    SVN_ERR(svn_fs_youngest_rev(&youngest_rev, fs, pool));    min_rev = 1;    max_rev = youngest_rev;    subpool = svn_pool_create(pool);    seen_branches << "master";    for (rev = min_rev; rev <= max_rev; rev++) {        svn_pool_clear(subpool);        export_revision(rev, fs, subpool);    }    svn_pool_destroy(pool);    return 0;}int main(int argc, char *argv[]){    if (argc != 2) {        fprintf(stderr, "usage: %s REPOS_PATH\n", argv[0]);        return -1;    }    if (apr_initialize() != APR_SUCCESS) {        fprintf(stderr, "You lose at apr_initialize().\n");        return -1;    }    crawl_revisions(argv[1]);    apr_terminate();    return 0;}