summaryrefslogtreecommitdiffstats
path: root/builtin/cat-file.c
diff options
context:
space:
mode:
Diffstat (limited to 'builtin/cat-file.c')
-rw-r--r--builtin/cat-file.c1075
1 files changed, 1075 insertions, 0 deletions
diff --git a/builtin/cat-file.c b/builtin/cat-file.c
new file mode 100644
index 0000000..ea8ad60
--- /dev/null
+++ b/builtin/cat-file.c
@@ -0,0 +1,1075 @@
+/*
+ * GIT - The information manager from hell
+ *
+ * Copyright (C) Linus Torvalds, 2005
+ */
+#define USE_THE_INDEX_VARIABLE
+#include "builtin.h"
+#include "config.h"
+#include "convert.h"
+#include "diff.h"
+#include "environment.h"
+#include "gettext.h"
+#include "hex.h"
+#include "ident.h"
+#include "parse-options.h"
+#include "userdiff.h"
+#include "streaming.h"
+#include "tree-walk.h"
+#include "oid-array.h"
+#include "packfile.h"
+#include "object-file.h"
+#include "object-name.h"
+#include "object-store-ll.h"
+#include "replace-object.h"
+#include "promisor-remote.h"
+#include "mailmap.h"
+#include "write-or-die.h"
+
+enum batch_mode {
+ BATCH_MODE_CONTENTS,
+ BATCH_MODE_INFO,
+ BATCH_MODE_QUEUE_AND_DISPATCH,
+};
+
+struct batch_options {
+ int enabled;
+ int follow_symlinks;
+ enum batch_mode batch_mode;
+ int buffer_output;
+ int all_objects;
+ int unordered;
+ int transform_mode; /* may be 'w' or 'c' for --filters or --textconv */
+ char input_delim;
+ char output_delim;
+ const char *format;
+};
+
+static const char *force_path;
+
+static struct string_list mailmap = STRING_LIST_INIT_NODUP;
+static int use_mailmap;
+
+static char *replace_idents_using_mailmap(char *, size_t *);
+
+static char *replace_idents_using_mailmap(char *object_buf, size_t *size)
+{
+ struct strbuf sb = STRBUF_INIT;
+ const char *headers[] = { "author ", "committer ", "tagger ", NULL };
+
+ strbuf_attach(&sb, object_buf, *size, *size + 1);
+ apply_mailmap_to_header(&sb, headers, &mailmap);
+ *size = sb.len;
+ return strbuf_detach(&sb, NULL);
+}
+
+static int filter_object(const char *path, unsigned mode,
+ const struct object_id *oid,
+ char **buf, unsigned long *size)
+{
+ enum object_type type;
+
+ *buf = repo_read_object_file(the_repository, oid, &type, size);
+ if (!*buf)
+ return error(_("cannot read object %s '%s'"),
+ oid_to_hex(oid), path);
+ if ((type == OBJ_BLOB) && S_ISREG(mode)) {
+ struct strbuf strbuf = STRBUF_INIT;
+ struct checkout_metadata meta;
+
+ init_checkout_metadata(&meta, NULL, NULL, oid);
+ if (convert_to_working_tree(&the_index, path, *buf, *size, &strbuf, &meta)) {
+ free(*buf);
+ *size = strbuf.len;
+ *buf = strbuf_detach(&strbuf, NULL);
+ }
+ }
+
+ return 0;
+}
+
+static int stream_blob(const struct object_id *oid)
+{
+ if (stream_blob_to_fd(1, oid, NULL, 0))
+ die("unable to stream %s to stdout", oid_to_hex(oid));
+ return 0;
+}
+
+static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
+ int unknown_type)
+{
+ int ret;
+ struct object_id oid;
+ enum object_type type;
+ char *buf;
+ unsigned long size;
+ struct object_context obj_context;
+ struct object_info oi = OBJECT_INFO_INIT;
+ struct strbuf sb = STRBUF_INIT;
+ unsigned flags = OBJECT_INFO_LOOKUP_REPLACE;
+ unsigned get_oid_flags = GET_OID_RECORD_PATH | GET_OID_ONLY_TO_DIE;
+ const char *path = force_path;
+ const int opt_cw = (opt == 'c' || opt == 'w');
+ if (!path && opt_cw)
+ get_oid_flags |= GET_OID_REQUIRE_PATH;
+
+ if (unknown_type)
+ flags |= OBJECT_INFO_ALLOW_UNKNOWN_TYPE;
+
+ if (get_oid_with_context(the_repository, obj_name, get_oid_flags, &oid,
+ &obj_context))
+ die("Not a valid object name %s", obj_name);
+
+ if (!path)
+ path = obj_context.path;
+ if (obj_context.mode == S_IFINVALID)
+ obj_context.mode = 0100644;
+
+ buf = NULL;
+ switch (opt) {
+ case 't':
+ oi.type_name = &sb;
+ if (oid_object_info_extended(the_repository, &oid, &oi, flags) < 0)
+ die("git cat-file: could not get object info");
+ if (sb.len) {
+ printf("%s\n", sb.buf);
+ strbuf_release(&sb);
+ ret = 0;
+ goto cleanup;
+ }
+ break;
+
+ case 's':
+ oi.sizep = &size;
+
+ if (use_mailmap) {
+ oi.typep = &type;
+ oi.contentp = (void**)&buf;
+ }
+
+ if (oid_object_info_extended(the_repository, &oid, &oi, flags) < 0)
+ die("git cat-file: could not get object info");
+
+ if (use_mailmap && (type == OBJ_COMMIT || type == OBJ_TAG)) {
+ size_t s = size;
+ buf = replace_idents_using_mailmap(buf, &s);
+ size = cast_size_t_to_ulong(s);
+ }
+
+ printf("%"PRIuMAX"\n", (uintmax_t)size);
+ ret = 0;
+ goto cleanup;
+
+ case 'e':
+ return !repo_has_object_file(the_repository, &oid);
+
+ case 'w':
+
+ if (filter_object(path, obj_context.mode,
+ &oid, &buf, &size)) {
+ ret = -1;
+ goto cleanup;
+ }
+ break;
+
+ case 'c':
+ if (textconv_object(the_repository, path, obj_context.mode,
+ &oid, 1, &buf, &size))
+ break;
+ /* else fallthrough */
+
+ case 'p':
+ type = oid_object_info(the_repository, &oid, NULL);
+ if (type < 0)
+ die("Not a valid object name %s", obj_name);
+
+ /* custom pretty-print here */
+ if (type == OBJ_TREE) {
+ const char *ls_args[3] = { NULL };
+ ls_args[0] = "ls-tree";
+ ls_args[1] = obj_name;
+ ret = cmd_ls_tree(2, ls_args, NULL);
+ goto cleanup;
+ }
+
+ if (type == OBJ_BLOB) {
+ ret = stream_blob(&oid);
+ goto cleanup;
+ }
+ buf = repo_read_object_file(the_repository, &oid, &type,
+ &size);
+ if (!buf)
+ die("Cannot read object %s", obj_name);
+
+ if (use_mailmap) {
+ size_t s = size;
+ buf = replace_idents_using_mailmap(buf, &s);
+ size = cast_size_t_to_ulong(s);
+ }
+
+ /* otherwise just spit out the data */
+ break;
+
+ case 0:
+ {
+ enum object_type exp_type_id = type_from_string(exp_type);
+
+ if (exp_type_id == OBJ_BLOB) {
+ struct object_id blob_oid;
+ if (oid_object_info(the_repository, &oid, NULL) == OBJ_TAG) {
+ char *buffer = repo_read_object_file(the_repository,
+ &oid,
+ &type,
+ &size);
+ const char *target;
+ if (!skip_prefix(buffer, "object ", &target) ||
+ get_oid_hex(target, &blob_oid))
+ die("%s not a valid tag", oid_to_hex(&oid));
+ free(buffer);
+ } else
+ oidcpy(&blob_oid, &oid);
+
+ if (oid_object_info(the_repository, &blob_oid, NULL) == OBJ_BLOB) {
+ ret = stream_blob(&blob_oid);
+ goto cleanup;
+ }
+ /*
+ * we attempted to dereference a tag to a blob
+ * and failed; there may be new dereference
+ * mechanisms this code is not aware of.
+ * fall-back to the usual case.
+ */
+ }
+ buf = read_object_with_reference(the_repository, &oid,
+ exp_type_id, &size, NULL);
+
+ if (use_mailmap) {
+ size_t s = size;
+ buf = replace_idents_using_mailmap(buf, &s);
+ size = cast_size_t_to_ulong(s);
+ }
+ break;
+ }
+ default:
+ die("git cat-file: unknown option: %s", exp_type);
+ }
+
+ if (!buf)
+ die("git cat-file %s: bad file", obj_name);
+
+ write_or_die(1, buf, size);
+ ret = 0;
+cleanup:
+ free(buf);
+ free(obj_context.path);
+ return ret;
+}
+
+struct expand_data {
+ struct object_id oid;
+ enum object_type type;
+ unsigned long size;
+ off_t disk_size;
+ const char *rest;
+ struct object_id delta_base_oid;
+
+ /*
+ * If mark_query is true, we do not expand anything, but rather
+ * just mark the object_info with items we wish to query.
+ */
+ int mark_query;
+
+ /*
+ * Whether to split the input on whitespace before feeding it to
+ * get_sha1; this is decided during the mark_query phase based on
+ * whether we have a %(rest) token in our format.
+ */
+ int split_on_whitespace;
+
+ /*
+ * After a mark_query run, this object_info is set up to be
+ * passed to oid_object_info_extended. It will point to the data
+ * elements above, so you can retrieve the response from there.
+ */
+ struct object_info info;
+
+ /*
+ * This flag will be true if the requested batch format and options
+ * don't require us to call oid_object_info, which can then be
+ * optimized out.
+ */
+ unsigned skip_object_info : 1;
+};
+
+static int is_atom(const char *atom, const char *s, int slen)
+{
+ int alen = strlen(atom);
+ return alen == slen && !memcmp(atom, s, alen);
+}
+
+static void expand_atom(struct strbuf *sb, const char *atom, int len,
+ struct expand_data *data)
+{
+ if (is_atom("objectname", atom, len)) {
+ if (!data->mark_query)
+ strbuf_addstr(sb, oid_to_hex(&data->oid));
+ } else if (is_atom("objecttype", atom, len)) {
+ if (data->mark_query)
+ data->info.typep = &data->type;
+ else
+ strbuf_addstr(sb, type_name(data->type));
+ } else if (is_atom("objectsize", atom, len)) {
+ if (data->mark_query)
+ data->info.sizep = &data->size;
+ else
+ strbuf_addf(sb, "%"PRIuMAX , (uintmax_t)data->size);
+ } else if (is_atom("objectsize:disk", atom, len)) {
+ if (data->mark_query)
+ data->info.disk_sizep = &data->disk_size;
+ else
+ strbuf_addf(sb, "%"PRIuMAX, (uintmax_t)data->disk_size);
+ } else if (is_atom("rest", atom, len)) {
+ if (data->mark_query)
+ data->split_on_whitespace = 1;
+ else if (data->rest)
+ strbuf_addstr(sb, data->rest);
+ } else if (is_atom("deltabase", atom, len)) {
+ if (data->mark_query)
+ data->info.delta_base_oid = &data->delta_base_oid;
+ else
+ strbuf_addstr(sb,
+ oid_to_hex(&data->delta_base_oid));
+ } else
+ die("unknown format element: %.*s", len, atom);
+}
+
+static void expand_format(struct strbuf *sb, const char *start,
+ struct expand_data *data)
+{
+ while (strbuf_expand_step(sb, &start)) {
+ const char *end;
+
+ if (skip_prefix(start, "%", &start) || *start != '(')
+ strbuf_addch(sb, '%');
+ else if (!(end = strchr(start + 1, ')')))
+ die("format element '%s' does not end in ')'", start);
+ else {
+ expand_atom(sb, start + 1, end - start - 1, data);
+ start = end + 1;
+ }
+ }
+}
+
+static void batch_write(struct batch_options *opt, const void *data, int len)
+{
+ if (opt->buffer_output) {
+ if (fwrite(data, 1, len, stdout) != len)
+ die_errno("unable to write to stdout");
+ } else
+ write_or_die(1, data, len);
+}
+
+static void print_object_or_die(struct batch_options *opt, struct expand_data *data)
+{
+ const struct object_id *oid = &data->oid;
+
+ assert(data->info.typep);
+
+ if (data->type == OBJ_BLOB) {
+ if (opt->buffer_output)
+ fflush(stdout);
+ if (opt->transform_mode) {
+ char *contents;
+ unsigned long size;
+
+ if (!data->rest)
+ die("missing path for '%s'", oid_to_hex(oid));
+
+ if (opt->transform_mode == 'w') {
+ if (filter_object(data->rest, 0100644, oid,
+ &contents, &size))
+ die("could not convert '%s' %s",
+ oid_to_hex(oid), data->rest);
+ } else if (opt->transform_mode == 'c') {
+ enum object_type type;
+ if (!textconv_object(the_repository,
+ data->rest, 0100644, oid,
+ 1, &contents, &size))
+ contents = repo_read_object_file(the_repository,
+ oid,
+ &type,
+ &size);
+ if (!contents)
+ die("could not convert '%s' %s",
+ oid_to_hex(oid), data->rest);
+ } else
+ BUG("invalid transform_mode: %c", opt->transform_mode);
+ batch_write(opt, contents, size);
+ free(contents);
+ } else {
+ stream_blob(oid);
+ }
+ }
+ else {
+ enum object_type type;
+ unsigned long size;
+ void *contents;
+
+ contents = repo_read_object_file(the_repository, oid, &type,
+ &size);
+
+ if (use_mailmap) {
+ size_t s = size;
+ contents = replace_idents_using_mailmap(contents, &s);
+ size = cast_size_t_to_ulong(s);
+ }
+
+ if (!contents)
+ die("object %s disappeared", oid_to_hex(oid));
+ if (type != data->type)
+ die("object %s changed type!?", oid_to_hex(oid));
+ if (data->info.sizep && size != data->size && !use_mailmap)
+ die("object %s changed size!?", oid_to_hex(oid));
+
+ batch_write(opt, contents, size);
+ free(contents);
+ }
+}
+
+static void print_default_format(struct strbuf *scratch, struct expand_data *data,
+ struct batch_options *opt)
+{
+ strbuf_addf(scratch, "%s %s %"PRIuMAX"%c", oid_to_hex(&data->oid),
+ type_name(data->type),
+ (uintmax_t)data->size, opt->output_delim);
+}
+
+/*
+ * If "pack" is non-NULL, then "offset" is the byte offset within the pack from
+ * which the object may be accessed (though note that we may also rely on
+ * data->oid, too). If "pack" is NULL, then offset is ignored.
+ */
+static void batch_object_write(const char *obj_name,
+ struct strbuf *scratch,
+ struct batch_options *opt,
+ struct expand_data *data,
+ struct packed_git *pack,
+ off_t offset)
+{
+ if (!data->skip_object_info) {
+ int ret;
+
+ if (use_mailmap)
+ data->info.typep = &data->type;
+
+ if (pack)
+ ret = packed_object_info(the_repository, pack, offset,
+ &data->info);
+ else
+ ret = oid_object_info_extended(the_repository,
+ &data->oid, &data->info,
+ OBJECT_INFO_LOOKUP_REPLACE);
+ if (ret < 0) {
+ printf("%s missing%c",
+ obj_name ? obj_name : oid_to_hex(&data->oid), opt->output_delim);
+ fflush(stdout);
+ return;
+ }
+
+ if (use_mailmap && (data->type == OBJ_COMMIT || data->type == OBJ_TAG)) {
+ size_t s = data->size;
+ char *buf = NULL;
+
+ buf = repo_read_object_file(the_repository, &data->oid, &data->type,
+ &data->size);
+ buf = replace_idents_using_mailmap(buf, &s);
+ data->size = cast_size_t_to_ulong(s);
+
+ free(buf);
+ }
+ }
+
+ strbuf_reset(scratch);
+
+ if (!opt->format) {
+ print_default_format(scratch, data, opt);
+ } else {
+ expand_format(scratch, opt->format, data);
+ strbuf_addch(scratch, opt->output_delim);
+ }
+
+ batch_write(opt, scratch->buf, scratch->len);
+
+ if (opt->batch_mode == BATCH_MODE_CONTENTS) {
+ print_object_or_die(opt, data);
+ batch_write(opt, &opt->output_delim, 1);
+ }
+}
+
+static void batch_one_object(const char *obj_name,
+ struct strbuf *scratch,
+ struct batch_options *opt,
+ struct expand_data *data)
+{
+ struct object_context ctx;
+ int flags = opt->follow_symlinks ? GET_OID_FOLLOW_SYMLINKS : 0;
+ enum get_oid_result result;
+
+ result = get_oid_with_context(the_repository, obj_name,
+ flags, &data->oid, &ctx);
+ if (result != FOUND) {
+ switch (result) {
+ case MISSING_OBJECT:
+ printf("%s missing%c", obj_name, opt->output_delim);
+ break;
+ case SHORT_NAME_AMBIGUOUS:
+ printf("%s ambiguous%c", obj_name, opt->output_delim);
+ break;
+ case DANGLING_SYMLINK:
+ printf("dangling %"PRIuMAX"%c%s%c",
+ (uintmax_t)strlen(obj_name),
+ opt->output_delim, obj_name, opt->output_delim);
+ break;
+ case SYMLINK_LOOP:
+ printf("loop %"PRIuMAX"%c%s%c",
+ (uintmax_t)strlen(obj_name),
+ opt->output_delim, obj_name, opt->output_delim);
+ break;
+ case NOT_DIR:
+ printf("notdir %"PRIuMAX"%c%s%c",
+ (uintmax_t)strlen(obj_name),
+ opt->output_delim, obj_name, opt->output_delim);
+ break;
+ default:
+ BUG("unknown get_sha1_with_context result %d\n",
+ result);
+ break;
+ }
+ fflush(stdout);
+ return;
+ }
+
+ if (ctx.mode == 0) {
+ printf("symlink %"PRIuMAX"%c%s%c",
+ (uintmax_t)ctx.symlink_path.len,
+ opt->output_delim, ctx.symlink_path.buf, opt->output_delim);
+ fflush(stdout);
+ return;
+ }
+
+ batch_object_write(obj_name, scratch, opt, data, NULL, 0);
+}
+
+struct object_cb_data {
+ struct batch_options *opt;
+ struct expand_data *expand;
+ struct oidset *seen;
+ struct strbuf *scratch;
+};
+
+static int batch_object_cb(const struct object_id *oid, void *vdata)
+{
+ struct object_cb_data *data = vdata;
+ oidcpy(&data->expand->oid, oid);
+ batch_object_write(NULL, data->scratch, data->opt, data->expand,
+ NULL, 0);
+ return 0;
+}
+
+static int collect_loose_object(const struct object_id *oid,
+ const char *path UNUSED,
+ void *data)
+{
+ oid_array_append(data, oid);
+ return 0;
+}
+
+static int collect_packed_object(const struct object_id *oid,
+ struct packed_git *pack UNUSED,
+ uint32_t pos UNUSED,
+ void *data)
+{
+ oid_array_append(data, oid);
+ return 0;
+}
+
+static int batch_unordered_object(const struct object_id *oid,
+ struct packed_git *pack, off_t offset,
+ void *vdata)
+{
+ struct object_cb_data *data = vdata;
+
+ if (oidset_insert(data->seen, oid))
+ return 0;
+
+ oidcpy(&data->expand->oid, oid);
+ batch_object_write(NULL, data->scratch, data->opt, data->expand,
+ pack, offset);
+ return 0;
+}
+
+static int batch_unordered_loose(const struct object_id *oid,
+ const char *path UNUSED,
+ void *data)
+{
+ return batch_unordered_object(oid, NULL, 0, data);
+}
+
+static int batch_unordered_packed(const struct object_id *oid,
+ struct packed_git *pack,
+ uint32_t pos,
+ void *data)
+{
+ return batch_unordered_object(oid, pack,
+ nth_packed_object_offset(pack, pos),
+ data);
+}
+
+typedef void (*parse_cmd_fn_t)(struct batch_options *, const char *,
+ struct strbuf *, struct expand_data *);
+
+struct queued_cmd {
+ parse_cmd_fn_t fn;
+ char *line;
+};
+
+static void parse_cmd_contents(struct batch_options *opt,
+ const char *line,
+ struct strbuf *output,
+ struct expand_data *data)
+{
+ opt->batch_mode = BATCH_MODE_CONTENTS;
+ batch_one_object(line, output, opt, data);
+}
+
+static void parse_cmd_info(struct batch_options *opt,
+ const char *line,
+ struct strbuf *output,
+ struct expand_data *data)
+{
+ opt->batch_mode = BATCH_MODE_INFO;
+ batch_one_object(line, output, opt, data);
+}
+
+static void dispatch_calls(struct batch_options *opt,
+ struct strbuf *output,
+ struct expand_data *data,
+ struct queued_cmd *cmd,
+ int nr)
+{
+ int i;
+
+ if (!opt->buffer_output)
+ die(_("flush is only for --buffer mode"));
+
+ for (i = 0; i < nr; i++)
+ cmd[i].fn(opt, cmd[i].line, output, data);
+
+ fflush(stdout);
+}
+
+static void free_cmds(struct queued_cmd *cmd, size_t *nr)
+{
+ size_t i;
+
+ for (i = 0; i < *nr; i++)
+ FREE_AND_NULL(cmd[i].line);
+
+ *nr = 0;
+}
+
+
+static const struct parse_cmd {
+ const char *name;
+ parse_cmd_fn_t fn;
+ unsigned takes_args;
+} commands[] = {
+ { "contents", parse_cmd_contents, 1},
+ { "info", parse_cmd_info, 1},
+ { "flush", NULL, 0},
+};
+
+static void batch_objects_command(struct batch_options *opt,
+ struct strbuf *output,
+ struct expand_data *data)
+{
+ struct strbuf input = STRBUF_INIT;
+ struct queued_cmd *queued_cmd = NULL;
+ size_t alloc = 0, nr = 0;
+
+ while (strbuf_getdelim_strip_crlf(&input, stdin, opt->input_delim) != EOF) {
+ int i;
+ const struct parse_cmd *cmd = NULL;
+ const char *p = NULL, *cmd_end;
+ struct queued_cmd call = {0};
+
+ if (!input.len)
+ die(_("empty command in input"));
+ if (isspace(*input.buf))
+ die(_("whitespace before command: '%s'"), input.buf);
+
+ for (i = 0; i < ARRAY_SIZE(commands); i++) {
+ if (!skip_prefix(input.buf, commands[i].name, &cmd_end))
+ continue;
+
+ cmd = &commands[i];
+ if (cmd->takes_args) {
+ if (*cmd_end != ' ')
+ die(_("%s requires arguments"),
+ commands[i].name);
+
+ p = cmd_end + 1;
+ } else if (*cmd_end) {
+ die(_("%s takes no arguments"),
+ commands[i].name);
+ }
+
+ break;
+ }
+
+ if (!cmd)
+ die(_("unknown command: '%s'"), input.buf);
+
+ if (!strcmp(cmd->name, "flush")) {
+ dispatch_calls(opt, output, data, queued_cmd, nr);
+ free_cmds(queued_cmd, &nr);
+ } else if (!opt->buffer_output) {
+ cmd->fn(opt, p, output, data);
+ } else {
+ ALLOC_GROW(queued_cmd, nr + 1, alloc);
+ call.fn = cmd->fn;
+ call.line = xstrdup_or_null(p);
+ queued_cmd[nr++] = call;
+ }
+ }
+
+ if (opt->buffer_output &&
+ nr &&
+ !git_env_bool("GIT_TEST_CAT_FILE_NO_FLUSH_ON_EXIT", 0)) {
+ dispatch_calls(opt, output, data, queued_cmd, nr);
+ free_cmds(queued_cmd, &nr);
+ }
+
+ free_cmds(queued_cmd, &nr);
+ free(queued_cmd);
+ strbuf_release(&input);
+}
+
+#define DEFAULT_FORMAT "%(objectname) %(objecttype) %(objectsize)"
+
+static int batch_objects(struct batch_options *opt)
+{
+ struct strbuf input = STRBUF_INIT;
+ struct strbuf output = STRBUF_INIT;
+ struct expand_data data;
+ int save_warning;
+ int retval = 0;
+
+ /*
+ * Expand once with our special mark_query flag, which will prime the
+ * object_info to be handed to oid_object_info_extended for each
+ * object.
+ */
+ memset(&data, 0, sizeof(data));
+ data.mark_query = 1;
+ expand_format(&output,
+ opt->format ? opt->format : DEFAULT_FORMAT,
+ &data);
+ data.mark_query = 0;
+ strbuf_release(&output);
+ if (opt->transform_mode)
+ data.split_on_whitespace = 1;
+
+ if (opt->format && !strcmp(opt->format, DEFAULT_FORMAT))
+ opt->format = NULL;
+ /*
+ * If we are printing out the object, then always fill in the type,
+ * since we will want to decide whether or not to stream.
+ */
+ if (opt->batch_mode == BATCH_MODE_CONTENTS)
+ data.info.typep = &data.type;
+
+ if (opt->all_objects) {
+ struct object_cb_data cb;
+ struct object_info empty = OBJECT_INFO_INIT;
+
+ if (!memcmp(&data.info, &empty, sizeof(empty)))
+ data.skip_object_info = 1;
+
+ if (repo_has_promisor_remote(the_repository))
+ warning("This repository uses promisor remotes. Some objects may not be loaded.");
+
+ disable_replace_refs();
+
+ cb.opt = opt;
+ cb.expand = &data;
+ cb.scratch = &output;
+
+ if (opt->unordered) {
+ struct oidset seen = OIDSET_INIT;
+
+ cb.seen = &seen;
+
+ for_each_loose_object(batch_unordered_loose, &cb, 0);
+ for_each_packed_object(batch_unordered_packed, &cb,
+ FOR_EACH_OBJECT_PACK_ORDER);
+
+ oidset_clear(&seen);
+ } else {
+ struct oid_array sa = OID_ARRAY_INIT;
+
+ for_each_loose_object(collect_loose_object, &sa, 0);
+ for_each_packed_object(collect_packed_object, &sa, 0);
+
+ oid_array_for_each_unique(&sa, batch_object_cb, &cb);
+
+ oid_array_clear(&sa);
+ }
+
+ strbuf_release(&output);
+ return 0;
+ }
+
+ /*
+ * We are going to call get_sha1 on a potentially very large number of
+ * objects. In most large cases, these will be actual object sha1s. The
+ * cost to double-check that each one is not also a ref (just so we can
+ * warn) ends up dwarfing the actual cost of the object lookups
+ * themselves. We can work around it by just turning off the warning.
+ */
+ save_warning = warn_on_object_refname_ambiguity;
+ warn_on_object_refname_ambiguity = 0;
+
+ if (opt->batch_mode == BATCH_MODE_QUEUE_AND_DISPATCH) {
+ batch_objects_command(opt, &output, &data);
+ goto cleanup;
+ }
+
+ while (strbuf_getdelim_strip_crlf(&input, stdin, opt->input_delim) != EOF) {
+ if (data.split_on_whitespace) {
+ /*
+ * Split at first whitespace, tying off the beginning
+ * of the string and saving the remainder (or NULL) in
+ * data.rest.
+ */
+ char *p = strpbrk(input.buf, " \t");
+ if (p) {
+ while (*p && strchr(" \t", *p))
+ *p++ = '\0';
+ }
+ data.rest = p;
+ }
+
+ batch_one_object(input.buf, &output, opt, &data);
+ }
+
+ cleanup:
+ strbuf_release(&input);
+ strbuf_release(&output);
+ warn_on_object_refname_ambiguity = save_warning;
+ return retval;
+}
+
+static int git_cat_file_config(const char *var, const char *value,
+ const struct config_context *ctx, void *cb)
+{
+ if (userdiff_config(var, value) < 0)
+ return -1;
+
+ return git_default_config(var, value, ctx, cb);
+}
+
+static int batch_option_callback(const struct option *opt,
+ const char *arg,
+ int unset)
+{
+ struct batch_options *bo = opt->value;
+
+ BUG_ON_OPT_NEG(unset);
+
+ if (bo->enabled) {
+ return error(_("only one batch option may be specified"));
+ }
+
+ bo->enabled = 1;
+
+ if (!strcmp(opt->long_name, "batch"))
+ bo->batch_mode = BATCH_MODE_CONTENTS;
+ else if (!strcmp(opt->long_name, "batch-check"))
+ bo->batch_mode = BATCH_MODE_INFO;
+ else if (!strcmp(opt->long_name, "batch-command"))
+ bo->batch_mode = BATCH_MODE_QUEUE_AND_DISPATCH;
+ else
+ BUG("%s given to batch-option-callback", opt->long_name);
+
+ bo->format = arg;
+
+ return 0;
+}
+
+int cmd_cat_file(int argc, const char **argv, const char *prefix)
+{
+ int opt = 0;
+ int opt_cw = 0;
+ int opt_epts = 0;
+ const char *exp_type = NULL, *obj_name = NULL;
+ struct batch_options batch = {0};
+ int unknown_type = 0;
+ int input_nul_terminated = 0;
+ int nul_terminated = 0;
+
+ const char * const usage[] = {
+ N_("git cat-file <type> <object>"),
+ N_("git cat-file (-e | -p) <object>"),
+ N_("git cat-file (-t | -s) [--allow-unknown-type] <object>"),
+ N_("git cat-file (--textconv | --filters)\n"
+ " [<rev>:<path|tree-ish> | --path=<path|tree-ish> <rev>]"),
+ N_("git cat-file (--batch | --batch-check | --batch-command) [--batch-all-objects]\n"
+ " [--buffer] [--follow-symlinks] [--unordered]\n"
+ " [--textconv | --filters] [-Z]"),
+ NULL
+ };
+ const struct option options[] = {
+ /* Simple queries */
+ OPT_GROUP(N_("Check object existence or emit object contents")),
+ OPT_CMDMODE('e', NULL, &opt,
+ N_("check if <object> exists"), 'e'),
+ OPT_CMDMODE('p', NULL, &opt, N_("pretty-print <object> content"), 'p'),
+
+ OPT_GROUP(N_("Emit [broken] object attributes")),
+ OPT_CMDMODE('t', NULL, &opt, N_("show object type (one of 'blob', 'tree', 'commit', 'tag', ...)"), 't'),
+ OPT_CMDMODE('s', NULL, &opt, N_("show object size"), 's'),
+ OPT_BOOL(0, "allow-unknown-type", &unknown_type,
+ N_("allow -s and -t to work with broken/corrupt objects")),
+ OPT_BOOL(0, "use-mailmap", &use_mailmap, N_("use mail map file")),
+ OPT_ALIAS(0, "mailmap", "use-mailmap"),
+ /* Batch mode */
+ OPT_GROUP(N_("Batch objects requested on stdin (or --batch-all-objects)")),
+ OPT_CALLBACK_F(0, "batch", &batch, N_("format"),
+ N_("show full <object> or <rev> contents"),
+ PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
+ batch_option_callback),
+ OPT_CALLBACK_F(0, "batch-check", &batch, N_("format"),
+ N_("like --batch, but don't emit <contents>"),
+ PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
+ batch_option_callback),
+ OPT_BOOL_F('z', NULL, &input_nul_terminated, N_("stdin is NUL-terminated"),
+ PARSE_OPT_HIDDEN),
+ OPT_BOOL('Z', NULL, &nul_terminated, N_("stdin and stdout is NUL-terminated")),
+ OPT_CALLBACK_F(0, "batch-command", &batch, N_("format"),
+ N_("read commands from stdin"),
+ PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
+ batch_option_callback),
+ OPT_CMDMODE(0, "batch-all-objects", &opt,
+ N_("with --batch[-check]: ignores stdin, batches all known objects"), 'b'),
+ /* Batch-specific options */
+ OPT_GROUP(N_("Change or optimize batch output")),
+ OPT_BOOL(0, "buffer", &batch.buffer_output, N_("buffer --batch output")),
+ OPT_BOOL(0, "follow-symlinks", &batch.follow_symlinks,
+ N_("follow in-tree symlinks")),
+ OPT_BOOL(0, "unordered", &batch.unordered,
+ N_("do not order objects before emitting them")),
+ /* Textconv options, stand-ole*/
+ OPT_GROUP(N_("Emit object (blob or tree) with conversion or filter (stand-alone, or with batch)")),
+ OPT_CMDMODE(0, "textconv", &opt,
+ N_("run textconv on object's content"), 'c'),
+ OPT_CMDMODE(0, "filters", &opt,
+ N_("run filters on object's content"), 'w'),
+ OPT_STRING(0, "path", &force_path, N_("blob|tree"),
+ N_("use a <path> for (--textconv | --filters); Not with 'batch'")),
+ OPT_END()
+ };
+
+ git_config(git_cat_file_config, NULL);
+
+ batch.buffer_output = -1;
+
+ argc = parse_options(argc, argv, prefix, options, usage, 0);
+ opt_cw = (opt == 'c' || opt == 'w');
+ opt_epts = (opt == 'e' || opt == 'p' || opt == 't' || opt == 's');
+
+ if (use_mailmap)
+ read_mailmap(&mailmap);
+
+ /* --batch-all-objects? */
+ if (opt == 'b')
+ batch.all_objects = 1;
+
+ /* Option compatibility */
+ if (force_path && !opt_cw)
+ usage_msg_optf(_("'%s=<%s>' needs '%s' or '%s'"),
+ usage, options,
+ "--path", _("path|tree-ish"), "--filters",
+ "--textconv");
+
+ /* Option compatibility with batch mode */
+ if (batch.enabled)
+ ;
+ else if (batch.follow_symlinks)
+ usage_msg_optf(_("'%s' requires a batch mode"), usage, options,
+ "--follow-symlinks");
+ else if (batch.buffer_output >= 0)
+ usage_msg_optf(_("'%s' requires a batch mode"), usage, options,
+ "--buffer");
+ else if (batch.all_objects)
+ usage_msg_optf(_("'%s' requires a batch mode"), usage, options,
+ "--batch-all-objects");
+ else if (input_nul_terminated)
+ usage_msg_optf(_("'%s' requires a batch mode"), usage, options,
+ "-z");
+ else if (nul_terminated)
+ usage_msg_optf(_("'%s' requires a batch mode"), usage, options,
+ "-Z");
+
+ batch.input_delim = batch.output_delim = '\n';
+ if (input_nul_terminated)
+ batch.input_delim = '\0';
+ if (nul_terminated)
+ batch.input_delim = batch.output_delim = '\0';
+
+ /* Batch defaults */
+ if (batch.buffer_output < 0)
+ batch.buffer_output = batch.all_objects;
+
+ /* Return early if we're in batch mode? */
+ if (batch.enabled) {
+ if (opt_cw)
+ batch.transform_mode = opt;
+ else if (opt && opt != 'b')
+ usage_msg_optf(_("'-%c' is incompatible with batch mode"),
+ usage, options, opt);
+ else if (argc)
+ usage_msg_opt(_("batch modes take no arguments"), usage,
+ options);
+
+ return batch_objects(&batch);
+ }
+
+ if (opt) {
+ if (!argc && opt == 'c')
+ usage_msg_optf(_("<rev> required with '%s'"),
+ usage, options, "--textconv");
+ else if (!argc && opt == 'w')
+ usage_msg_optf(_("<rev> required with '%s'"),
+ usage, options, "--filters");
+ else if (!argc && opt_epts)
+ usage_msg_optf(_("<object> required with '-%c'"),
+ usage, options, opt);
+ else if (argc == 1)
+ obj_name = argv[0];
+ else
+ usage_msg_opt(_("too many arguments"), usage, options);
+ } else if (!argc) {
+ usage_with_options(usage, options);
+ } else if (argc != 2) {
+ usage_msg_optf(_("only two arguments allowed in <type> <object> mode, not %d"),
+ usage, options, argc);
+ } else if (argc) {
+ exp_type = argv[0];
+ obj_name = argv[1];
+ }
+
+ if (unknown_type && opt != 't' && opt != 's')
+ die("git cat-file --allow-unknown-type: use with -s or -t");
+ return cat_one_file(opt, exp_type, obj_name, unknown_type);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-02 09:02:55 +0000