diff options
Diffstat (limited to 'archive.c')
| -rw-r--r-- | archive.c | 171 |
1 files changed, 137 insertions, 34 deletions
@@ -4,25 +4,25 @@ #include "attr.h" #include "archive.h" #include "parse-options.h" +#include "unpack-trees.h" static char const * const archive_usage[] = { - "git archive [options] <tree-ish> [path...]", + "git archive [options] <tree-ish> [<path>...]", "git archive --list", - "git archive --remote <repo> [--exec <cmd>] [options] <tree-ish> [path...]", + "git archive --remote <repo> [--exec <cmd>] [options] <tree-ish> [<path>...]", "git archive --remote <repo> [--exec <cmd>] --list", NULL }; -#define USES_ZLIB_COMPRESSION 1 +static const struct archiver **archivers; +static int nr_archivers; +static int alloc_archivers; -static const struct archiver { - const char *name; - write_archive_fn_t write_archive; - unsigned int flags; -} archivers[] = { - { "tar", write_tar_archive }, - { "zip", write_zip_archive, USES_ZLIB_COMPRESSION }, -}; +void register_archiver(struct archiver *ar) +{ + ALLOC_GROW(archivers, nr_archivers + 1, alloc_archivers); + archivers[nr_archivers++] = ar; +} static void format_subst(const struct commit *commit, const char *src, size_t len, @@ -30,6 +30,9 @@ static void format_subst(const struct commit *commit, { char *to_free = NULL; struct strbuf fmt = STRBUF_INIT; + struct pretty_print_context ctx = {0}; + ctx.date_mode = DATE_NORMAL; + ctx.abbrev = DEFAULT_ABBREV; if (src == buf->buf) to_free = strbuf_detach(buf, NULL); @@ -47,7 +50,7 @@ static void format_subst(const struct commit *commit, strbuf_add(&fmt, b + 8, c - b - 8); strbuf_add(buf, src, b - src); - format_commit_message(commit, fmt.buf, buf, DATE_NORMAL); + format_commit_message(commit, fmt.buf, buf, &ctx); len -= c + 1 - src; src = c + 1; } @@ -84,8 +87,8 @@ static void setup_archive_check(struct git_attr_check *check) static struct git_attr *attr_export_subst; if (!attr_export_ignore) { - attr_export_ignore = git_attr("export-ignore", 13); - attr_export_subst = git_attr("export-subst", 12); + attr_export_ignore = git_attr("export-ignore"); + attr_export_subst = git_attr("export-subst"); } check[0].attr = attr_export_ignore; check[1].attr = attr_export_subst; @@ -114,12 +117,13 @@ static int write_archive_entry(const unsigned char *sha1, const char *base, strbuf_reset(&path); strbuf_grow(&path, PATH_MAX); + strbuf_add(&path, args->base, args->baselen); strbuf_add(&path, base, baselen); strbuf_addstr(&path, filename); path_without_prefix = path.buf + args->baselen; setup_archive_check(check); - if (!git_checkattr(path_without_prefix, ARRAY_SIZE(check), check)) { + if (!git_check_attr(path_without_prefix, ARRAY_SIZE(check), check)) { if (ATTR_TRUE(check[0].value)) return 0; convert = ATTR_TRUE(check[1].value); @@ -150,6 +154,9 @@ int write_archive_entries(struct archiver_args *args, write_archive_entry_fn_t write_entry) { struct archiver_context context; + struct unpack_trees_options opts; + struct tree_desc t; + struct pathspec pathspec; int err; if (args->baselen > 0 && args->base[args->baselen - 1] == '/') { @@ -168,8 +175,26 @@ int write_archive_entries(struct archiver_args *args, context.args = args; context.write_entry = write_entry; - err = read_tree_recursive(args->tree, args->base, args->baselen, 0, - args->pathspec, write_archive_entry, &context); + /* + * Setup index and instruct attr to read index only + */ + if (!args->worktree_attributes) { + memset(&opts, 0, sizeof(opts)); + opts.index_only = 1; + opts.head_idx = -1; + opts.src_index = &the_index; + opts.dst_index = &the_index; + opts.fn = oneway_merge; + init_tree_desc(&t, args->tree->buffer, args->tree->size); + if (unpack_trees(1, &t, &opts)) + return -1; + git_attr_set_direction(GIT_ATTR_INDEX, &the_index); + } + + init_pathspec(&pathspec, args->pathspec); + err = read_tree_recursive(args->tree, "", 0, 0, &pathspec, + write_archive_entry, &context); + free_pathspec(&pathspec); if (err == READ_TREE_RECURSIVE) err = 0; return err; @@ -182,17 +207,43 @@ static const struct archiver *lookup_archiver(const char *name) if (!name) return NULL; - for (i = 0; i < ARRAY_SIZE(archivers); i++) { - if (!strcmp(name, archivers[i].name)) - return &archivers[i]; + for (i = 0; i < nr_archivers; i++) { + if (!strcmp(name, archivers[i]->name)) + return archivers[i]; } return NULL; } +static int reject_entry(const unsigned char *sha1, const char *base, + int baselen, const char *filename, unsigned mode, + int stage, void *context) +{ + return -1; +} + +static int path_exists(struct tree *tree, const char *path) +{ + const char *paths[] = { path, NULL }; + struct pathspec pathspec; + int ret; + + init_pathspec(&pathspec, paths); + ret = read_tree_recursive(tree, "", 0, 0, &pathspec, reject_entry, NULL); + free_pathspec(&pathspec); + return ret != 0; +} + static void parse_pathspec_arg(const char **pathspec, struct archiver_args *ar_args) { - ar_args->pathspec = get_pathspec(ar_args->base, pathspec); + ar_args->pathspec = pathspec = get_pathspec("", pathspec); + if (pathspec) { + while (*pathspec) { + if (!path_exists(ar_args->tree, *pathspec)) + die("path not found: %s", *pathspec); + pathspec++; + } + } } static void parse_treeish_arg(const char **argv, @@ -257,22 +308,29 @@ static void parse_treeish_arg(const char **argv, PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_HIDDEN, NULL, (p) } static int parse_archive_args(int argc, const char **argv, - const struct archiver **ar, struct archiver_args *args) + const struct archiver **ar, struct archiver_args *args, + const char *name_hint, int is_remote) { - const char *format = "tar"; + const char *format = NULL; const char *base = NULL; const char *remote = NULL; const char *exec = NULL; + const char *output = NULL; int compression_level = -1; int verbose = 0; int i; int list = 0; + int worktree_attributes = 0; struct option opts[] = { OPT_GROUP(""), OPT_STRING(0, "format", &format, "fmt", "archive format"), OPT_STRING(0, "prefix", &base, "prefix", "prepend prefix to each pathname in the archive"), - OPT__VERBOSE(&verbose), + OPT_STRING('o', "output", &output, "file", + "write the archive to this file"), + OPT_BOOLEAN(0, "worktree-attributes", &worktree_attributes, + "read .gitattributes in working directory"), + OPT__VERBOSE(&verbose, "report archived files on stderr"), OPT__COMPR('0', &compression_level, "store only", 0), OPT__COMPR('1', &compression_level, "compress faster", 1), OPT__COMPR_HIDDEN('2', &compression_level, 2), @@ -294,32 +352,40 @@ static int parse_archive_args(int argc, const char **argv, OPT_END() }; - argc = parse_options(argc, argv, opts, archive_usage, 0); + argc = parse_options(argc, argv, NULL, opts, archive_usage, 0); if (remote) die("Unexpected option --remote"); if (exec) die("Option --exec can only be used together with --remote"); + if (output) + die("Unexpected option --output"); if (!base) base = ""; if (list) { - for (i = 0; i < ARRAY_SIZE(archivers); i++) - printf("%s\n", archivers[i].name); + for (i = 0; i < nr_archivers; i++) + if (!is_remote || archivers[i]->flags & ARCHIVER_REMOTE) + printf("%s\n", archivers[i]->name); exit(0); } + if (!format && name_hint) + format = archive_format_from_filename(name_hint); + if (!format) + format = "tar"; + /* We need at least one parameter -- tree-ish */ if (argc < 1) usage_with_options(archive_usage, opts); *ar = lookup_archiver(format); - if (!*ar) + if (!*ar || (is_remote && !((*ar)->flags & ARCHIVER_REMOTE))) die("Unknown archive format '%s'", format); args->compression_level = Z_DEFAULT_COMPRESSION; if (compression_level != -1) { - if ((*ar)->flags & USES_ZLIB_COMPRESSION) + if ((*ar)->flags & ARCHIVER_WANT_COMPRESSION_LEVELS) args->compression_level = compression_level; else { die("Argument not supported for format '%s': -%d", @@ -329,24 +395,61 @@ static int parse_archive_args(int argc, const char **argv, args->verbose = verbose; args->base = base; args->baselen = strlen(base); + args->worktree_attributes = worktree_attributes; return argc; } int write_archive(int argc, const char **argv, const char *prefix, - int setup_prefix, int remote) + int setup_prefix, const char *name_hint, int remote) { + int nongit = 0; const struct archiver *ar = NULL; struct archiver_args args; - argc = parse_archive_args(argc, argv, &ar, &args); if (setup_prefix && prefix == NULL) - prefix = setup_git_directory(); + prefix = setup_git_directory_gently(&nongit); + + git_config(git_default_config, NULL); + init_tar_archiver(); + init_zip_archiver(); + + argc = parse_archive_args(argc, argv, &ar, &args, name_hint, remote); + if (nongit) { + /* + * We know this will die() with an error, so we could just + * die ourselves; but its error message will be more specific + * than what we could write here. + */ + setup_git_directory(); + } parse_treeish_arg(argv, &args, prefix, remote); parse_pathspec_arg(argv + 1, &args); - git_config(git_default_config, NULL); + return ar->write_archive(ar, &args); +} - return ar->write_archive(&args); +static int match_extension(const char *filename, const char *ext) +{ + int prefixlen = strlen(filename) - strlen(ext); + + /* + * We need 1 character for the '.', and 1 character to ensure that the + * prefix is non-empty (k.e., we don't match .tar.gz with no actual + * filename). + */ + if (prefixlen < 2 || filename[prefixlen-1] != '.') + return 0; + return !strcmp(filename + prefixlen, ext); +} + +const char *archive_format_from_filename(const char *filename) +{ + int i; + + for (i = 0; i < nr_archivers; i++) + if (match_extension(filename, archivers[i]->name)) + return archivers[i]->name; + return NULL; } |