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-rw-r--r--fast-import.c238
1 files changed, 113 insertions, 125 deletions
diff --git a/fast-import.c b/fast-import.c
index fb4738d..fa635f7 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -248,6 +248,7 @@ struct branch {
uintmax_t last_commit;
uintmax_t num_notes;
unsigned active : 1;
+ unsigned delete : 1;
unsigned pack_id : PACK_ID_BITS;
unsigned char sha1[20];
};
@@ -370,8 +371,8 @@ static volatile sig_atomic_t checkpoint_requested;
static int cat_blob_fd = STDOUT_FILENO;
static void parse_argv(void);
-static void parse_cat_blob(void);
-static void parse_ls(struct branch *b);
+static void parse_cat_blob(const char *p);
+static void parse_ls(const char *p, struct branch *b);
static void write_branch_report(FILE *rpt, struct branch *b)
{
@@ -1681,10 +1682,13 @@ static int update_branch(struct branch *b)
struct ref_lock *lock;
unsigned char old_sha1[20];
- if (is_null_sha1(b->sha1))
- return 0;
if (read_ref(b->name, old_sha1))
hashclr(old_sha1);
+ if (is_null_sha1(b->sha1)) {
+ if (b->delete)
+ delete_ref(b->name, old_sha1, 0);
+ return 0;
+ }
lock = lock_any_ref_for_update(b->name, old_sha1, 0, NULL);
if (!lock)
return error("Unable to lock %s", b->name);
@@ -1857,6 +1861,8 @@ static int read_next_command(void)
}
for (;;) {
+ const char *p;
+
if (unread_command_buf) {
unread_command_buf = 0;
} else {
@@ -1889,8 +1895,8 @@ static int read_next_command(void)
rc->prev->next = rc;
cmd_tail = rc;
}
- if (starts_with(command_buf.buf, "cat-blob ")) {
- parse_cat_blob();
+ if (skip_prefix(command_buf.buf, "cat-blob ", &p)) {
+ parse_cat_blob(p);
continue;
}
if (command_buf.buf[0] == '#')
@@ -1908,8 +1914,9 @@ static void skip_optional_lf(void)
static void parse_mark(void)
{
- if (starts_with(command_buf.buf, "mark :")) {
- next_mark = strtoumax(command_buf.buf + 6, NULL, 10);
+ const char *v;
+ if (skip_prefix(command_buf.buf, "mark :", &v)) {
+ next_mark = strtoumax(v, NULL, 10);
read_next_command();
}
else
@@ -1918,14 +1925,15 @@ static void parse_mark(void)
static int parse_data(struct strbuf *sb, uintmax_t limit, uintmax_t *len_res)
{
+ const char *data;
strbuf_reset(sb);
- if (!starts_with(command_buf.buf, "data "))
+ if (!skip_prefix(command_buf.buf, "data ", &data))
die("Expected 'data n' command, found: %s", command_buf.buf);
- if (starts_with(command_buf.buf + 5, "<<")) {
- char *term = xstrdup(command_buf.buf + 5 + 2);
- size_t term_len = command_buf.len - 5 - 2;
+ if (skip_prefix(data, "<<", &data)) {
+ char *term = xstrdup(data);
+ size_t term_len = command_buf.len - (data - command_buf.buf);
strbuf_detach(&command_buf, NULL);
for (;;) {
@@ -1940,7 +1948,7 @@ static int parse_data(struct strbuf *sb, uintmax_t limit, uintmax_t *len_res)
free(term);
}
else {
- uintmax_t len = strtoumax(command_buf.buf + 5, NULL, 10);
+ uintmax_t len = strtoumax(data, NULL, 10);
size_t n = 0, length = (size_t)len;
if (limit && limit < len) {
@@ -2261,15 +2269,14 @@ static uintmax_t parse_mark_ref_space(const char **p)
char *end;
mark = parse_mark_ref(*p, &end);
- if (*end != ' ')
+ if (*end++ != ' ')
die("Missing space after mark: %s", command_buf.buf);
*p = end;
return mark;
}
-static void file_change_m(struct branch *b)
+static void file_change_m(const char *p, struct branch *b)
{
- const char *p = command_buf.buf + 2;
static struct strbuf uq = STRBUF_INIT;
const char *endp;
struct object_entry *oe;
@@ -2297,20 +2304,17 @@ static void file_change_m(struct branch *b)
if (*p == ':') {
oe = find_mark(parse_mark_ref_space(&p));
hashcpy(sha1, oe->idx.sha1);
- } else if (starts_with(p, "inline ")) {
+ } else if (skip_prefix(p, "inline ", &p)) {
inline_data = 1;
oe = NULL; /* not used with inline_data, but makes gcc happy */
- p += strlen("inline"); /* advance to space */
} else {
if (get_sha1_hex(p, sha1))
die("Invalid dataref: %s", command_buf.buf);
oe = find_object(sha1);
p += 40;
- if (*p != ' ')
+ if (*p++ != ' ')
die("Missing space after SHA1: %s", command_buf.buf);
}
- assert(*p == ' ');
- p++; /* skip space */
strbuf_reset(&uq);
if (!unquote_c_style(&uq, p, &endp)) {
@@ -2370,9 +2374,8 @@ static void file_change_m(struct branch *b)
tree_content_set(&b->branch_tree, p, sha1, mode, NULL);
}
-static void file_change_d(struct branch *b)
+static void file_change_d(const char *p, struct branch *b)
{
- const char *p = command_buf.buf + 2;
static struct strbuf uq = STRBUF_INIT;
const char *endp;
@@ -2385,15 +2388,14 @@ static void file_change_d(struct branch *b)
tree_content_remove(&b->branch_tree, p, NULL, 1);
}
-static void file_change_cr(struct branch *b, int rename)
+static void file_change_cr(const char *s, struct branch *b, int rename)
{
- const char *s, *d;
+ const char *d;
static struct strbuf s_uq = STRBUF_INIT;
static struct strbuf d_uq = STRBUF_INIT;
const char *endp;
struct tree_entry leaf;
- s = command_buf.buf + 2;
strbuf_reset(&s_uq);
if (!unquote_c_style(&s_uq, s, &endp)) {
if (*endp != ' ')
@@ -2438,9 +2440,8 @@ static void file_change_cr(struct branch *b, int rename)
leaf.tree);
}
-static void note_change_n(struct branch *b, unsigned char *old_fanout)
+static void note_change_n(const char *p, struct branch *b, unsigned char *old_fanout)
{
- const char *p = command_buf.buf + 2;
static struct strbuf uq = STRBUF_INIT;
struct object_entry *oe;
struct branch *s;
@@ -2470,20 +2471,17 @@ static void note_change_n(struct branch *b, unsigned char *old_fanout)
if (*p == ':') {
oe = find_mark(parse_mark_ref_space(&p));
hashcpy(sha1, oe->idx.sha1);
- } else if (starts_with(p, "inline ")) {
+ } else if (skip_prefix(p, "inline ", &p)) {
inline_data = 1;
oe = NULL; /* not used with inline_data, but makes gcc happy */
- p += strlen("inline"); /* advance to space */
} else {
if (get_sha1_hex(p, sha1))
die("Invalid dataref: %s", command_buf.buf);
oe = find_object(sha1);
p += 40;
- if (*p != ' ')
+ if (*p++ != ' ')
die("Missing space after SHA1: %s", command_buf.buf);
}
- assert(*p == ' ');
- p++; /* skip space */
/* <commit-ish> */
s = lookup_branch(p);
@@ -2581,7 +2579,7 @@ static int parse_from(struct branch *b)
const char *from;
struct branch *s;
- if (!starts_with(command_buf.buf, "from "))
+ if (!skip_prefix(command_buf.buf, "from ", &from))
return 0;
if (b->branch_tree.tree) {
@@ -2589,7 +2587,6 @@ static int parse_from(struct branch *b)
b->branch_tree.tree = NULL;
}
- from = strchr(command_buf.buf, ' ') + 1;
s = lookup_branch(from);
if (b == s)
die("Can't create a branch from itself: %s", b->name);
@@ -2611,8 +2608,11 @@ static int parse_from(struct branch *b)
free(buf);
} else
parse_from_existing(b);
- } else if (!get_sha1(from, b->sha1))
+ } else if (!get_sha1(from, b->sha1)) {
parse_from_existing(b);
+ if (is_null_sha1(b->sha1))
+ b->delete = 1;
+ }
else
die("Invalid ref name or SHA1 expression: %s", from);
@@ -2627,8 +2627,7 @@ static struct hash_list *parse_merge(unsigned int *count)
struct branch *s;
*count = 0;
- while (starts_with(command_buf.buf, "merge ")) {
- from = strchr(command_buf.buf, ' ') + 1;
+ while (skip_prefix(command_buf.buf, "merge ", &from)) {
n = xmalloc(sizeof(*n));
s = lookup_branch(from);
if (s)
@@ -2659,31 +2658,29 @@ static struct hash_list *parse_merge(unsigned int *count)
return list;
}
-static void parse_new_commit(void)
+static void parse_new_commit(const char *arg)
{
static struct strbuf msg = STRBUF_INIT;
struct branch *b;
- char *sp;
char *author = NULL;
char *committer = NULL;
struct hash_list *merge_list = NULL;
unsigned int merge_count;
unsigned char prev_fanout, new_fanout;
+ const char *v;
- /* Obtain the branch name from the rest of our command */
- sp = strchr(command_buf.buf, ' ') + 1;
- b = lookup_branch(sp);
+ b = lookup_branch(arg);
if (!b)
- b = new_branch(sp);
+ b = new_branch(arg);
read_next_command();
parse_mark();
- if (starts_with(command_buf.buf, "author ")) {
- author = parse_ident(command_buf.buf + 7);
+ if (skip_prefix(command_buf.buf, "author ", &v)) {
+ author = parse_ident(v);
read_next_command();
}
- if (starts_with(command_buf.buf, "committer ")) {
- committer = parse_ident(command_buf.buf + 10);
+ if (skip_prefix(command_buf.buf, "committer ", &v)) {
+ committer = parse_ident(v);
read_next_command();
}
if (!committer)
@@ -2703,20 +2700,20 @@ static void parse_new_commit(void)
/* file_change* */
while (command_buf.len > 0) {
- if (starts_with(command_buf.buf, "M "))
- file_change_m(b);
- else if (starts_with(command_buf.buf, "D "))
- file_change_d(b);
- else if (starts_with(command_buf.buf, "R "))
- file_change_cr(b, 1);
- else if (starts_with(command_buf.buf, "C "))
- file_change_cr(b, 0);
- else if (starts_with(command_buf.buf, "N "))
- note_change_n(b, &prev_fanout);
+ if (skip_prefix(command_buf.buf, "M ", &v))
+ file_change_m(v, b);
+ else if (skip_prefix(command_buf.buf, "D ", &v))
+ file_change_d(v, b);
+ else if (skip_prefix(command_buf.buf, "R ", &v))
+ file_change_cr(v, b, 1);
+ else if (skip_prefix(command_buf.buf, "C ", &v))
+ file_change_cr(v, b, 0);
+ else if (skip_prefix(command_buf.buf, "N ", &v))
+ note_change_n(v, b, &prev_fanout);
else if (!strcmp("deleteall", command_buf.buf))
file_change_deleteall(b);
- else if (starts_with(command_buf.buf, "ls "))
- parse_ls(b);
+ else if (skip_prefix(command_buf.buf, "ls ", &v))
+ parse_ls(v, b);
else {
unread_command_buf = 1;
break;
@@ -2759,10 +2756,9 @@ static void parse_new_commit(void)
b->last_commit = object_count_by_type[OBJ_COMMIT];
}
-static void parse_new_tag(void)
+static void parse_new_tag(const char *arg)
{
static struct strbuf msg = STRBUF_INIT;
- char *sp;
const char *from;
char *tagger;
struct branch *s;
@@ -2770,12 +2766,11 @@ static void parse_new_tag(void)
uintmax_t from_mark = 0;
unsigned char sha1[20];
enum object_type type;
+ const char *v;
- /* Obtain the new tag name from the rest of our command */
- sp = strchr(command_buf.buf, ' ') + 1;
t = pool_alloc(sizeof(struct tag));
memset(t, 0, sizeof(struct tag));
- t->name = pool_strdup(sp);
+ t->name = pool_strdup(arg);
if (last_tag)
last_tag->next_tag = t;
else
@@ -2784,9 +2779,8 @@ static void parse_new_tag(void)
read_next_command();
/* from ... */
- if (!starts_with(command_buf.buf, "from "))
+ if (!skip_prefix(command_buf.buf, "from ", &from))
die("Expected from command, got %s", command_buf.buf);
- from = strchr(command_buf.buf, ' ') + 1;
s = lookup_branch(from);
if (s) {
if (is_null_sha1(s->sha1))
@@ -2812,8 +2806,8 @@ static void parse_new_tag(void)
read_next_command();
/* tagger ... */
- if (starts_with(command_buf.buf, "tagger ")) {
- tagger = parse_ident(command_buf.buf + 7);
+ if (skip_prefix(command_buf.buf, "tagger ", &v)) {
+ tagger = parse_ident(v);
read_next_command();
} else
tagger = NULL;
@@ -2842,14 +2836,11 @@ static void parse_new_tag(void)
t->pack_id = pack_id;
}
-static void parse_reset_branch(void)
+static void parse_reset_branch(const char *arg)
{
struct branch *b;
- char *sp;
- /* Obtain the branch name from the rest of our command */
- sp = strchr(command_buf.buf, ' ') + 1;
- b = lookup_branch(sp);
+ b = lookup_branch(arg);
if (b) {
hashclr(b->sha1);
hashclr(b->branch_tree.versions[0].sha1);
@@ -2860,7 +2851,7 @@ static void parse_reset_branch(void)
}
}
else
- b = new_branch(sp);
+ b = new_branch(arg);
read_next_command();
parse_from(b);
if (command_buf.len > 0)
@@ -2918,14 +2909,12 @@ static void cat_blob(struct object_entry *oe, unsigned char sha1[20])
free(buf);
}
-static void parse_cat_blob(void)
+static void parse_cat_blob(const char *p)
{
- const char *p;
struct object_entry *oe = oe;
unsigned char sha1[20];
/* cat-blob SP <object> LF */
- p = command_buf.buf + strlen("cat-blob ");
if (*p == ':') {
oe = find_mark(parse_mark_ref_eol(p));
if (!oe)
@@ -3008,6 +2997,8 @@ static struct object_entry *parse_treeish_dataref(const char **p)
die("Invalid dataref: %s", command_buf.buf);
e = find_object(sha1);
*p += 40;
+ if (*(*p)++ != ' ')
+ die("Missing space after tree-ish: %s", command_buf.buf);
}
while (!e || e->type != OBJ_TREE)
@@ -3042,14 +3033,12 @@ static void print_ls(int mode, const unsigned char *sha1, const char *path)
cat_blob_write(line.buf, line.len);
}
-static void parse_ls(struct branch *b)
+static void parse_ls(const char *p, struct branch *b)
{
- const char *p;
struct tree_entry *root = NULL;
struct tree_entry leaf = {NULL};
/* ls SP (<tree-ish> SP)? <path> */
- p = command_buf.buf + strlen("ls ");
if (*p == '"') {
if (!b)
die("Not in a commit: %s", command_buf.buf);
@@ -3061,8 +3050,6 @@ static void parse_ls(struct branch *b)
if (!is_null_sha1(root->versions[1].sha1))
root->versions[1].mode = S_IFDIR;
load_tree(root);
- if (*p++ != ' ')
- die("Missing space after tree-ish: %s", command_buf.buf);
}
if (*p == '"') {
static struct strbuf uq = STRBUF_INIT;
@@ -3200,9 +3187,9 @@ static void option_export_pack_edges(const char *edges)
static int parse_one_option(const char *option)
{
- if (starts_with(option, "max-pack-size=")) {
+ if (skip_prefix(option, "max-pack-size=", &option)) {
unsigned long v;
- if (!git_parse_ulong(option + 14, &v))
+ if (!git_parse_ulong(option, &v))
return 0;
if (v < 8192) {
warning("max-pack-size is now in bytes, assuming --max-pack-size=%lum", v);
@@ -3212,17 +3199,17 @@ static int parse_one_option(const char *option)
v = 1024 * 1024;
}
max_packsize = v;
- } else if (starts_with(option, "big-file-threshold=")) {
+ } else if (skip_prefix(option, "big-file-threshold=", &option)) {
unsigned long v;
- if (!git_parse_ulong(option + 19, &v))
+ if (!git_parse_ulong(option, &v))
return 0;
big_file_threshold = v;
- } else if (starts_with(option, "depth=")) {
- option_depth(option + 6);
- } else if (starts_with(option, "active-branches=")) {
- option_active_branches(option + 16);
- } else if (starts_with(option, "export-pack-edges=")) {
- option_export_pack_edges(option + 18);
+ } else if (skip_prefix(option, "depth=", &option)) {
+ option_depth(option);
+ } else if (skip_prefix(option, "active-branches=", &option)) {
+ option_active_branches(option);
+ } else if (skip_prefix(option, "export-pack-edges=", &option)) {
+ option_export_pack_edges(option);
} else if (starts_with(option, "quiet")) {
show_stats = 0;
} else if (starts_with(option, "stats")) {
@@ -3236,15 +3223,16 @@ static int parse_one_option(const char *option)
static int parse_one_feature(const char *feature, int from_stream)
{
- if (starts_with(feature, "date-format=")) {
- option_date_format(feature + 12);
- } else if (starts_with(feature, "import-marks=")) {
- option_import_marks(feature + 13, from_stream, 0);
- } else if (starts_with(feature, "import-marks-if-exists=")) {
- option_import_marks(feature + strlen("import-marks-if-exists="),
- from_stream, 1);
- } else if (starts_with(feature, "export-marks=")) {
- option_export_marks(feature + 13);
+ const char *arg;
+
+ if (skip_prefix(feature, "date-format=", &arg)) {
+ option_date_format(arg);
+ } else if (skip_prefix(feature, "import-marks=", &arg)) {
+ option_import_marks(arg, from_stream, 0);
+ } else if (skip_prefix(feature, "import-marks-if-exists=", &arg)) {
+ option_import_marks(arg, from_stream, 1);
+ } else if (skip_prefix(feature, "export-marks=", &arg)) {
+ option_export_marks(arg);
} else if (!strcmp(feature, "cat-blob")) {
; /* Don't die - this feature is supported */
} else if (!strcmp(feature, "relative-marks")) {
@@ -3264,10 +3252,8 @@ static int parse_one_feature(const char *feature, int from_stream)
return 1;
}
-static void parse_feature(void)
+static void parse_feature(const char *feature)
{
- char *feature = command_buf.buf + 8;
-
if (seen_data_command)
die("Got feature command '%s' after data command", feature);
@@ -3277,10 +3263,8 @@ static void parse_feature(void)
die("This version of fast-import does not support feature %s.", feature);
}
-static void parse_option(void)
+static void parse_option(const char *option)
{
- char *option = command_buf.buf + 11;
-
if (seen_data_command)
die("Got option command '%s' after data command", option);
@@ -3335,18 +3319,21 @@ static void parse_argv(void)
if (*a != '-' || !strcmp(a, "--"))
break;
- if (parse_one_option(a + 2))
+ if (!skip_prefix(a, "--", &a))
+ die("unknown option %s", a);
+
+ if (parse_one_option(a))
continue;
- if (parse_one_feature(a + 2, 0))
+ if (parse_one_feature(a, 0))
continue;
- if (starts_with(a + 2, "cat-blob-fd=")) {
- option_cat_blob_fd(a + 2 + strlen("cat-blob-fd="));
+ if (skip_prefix(a, "cat-blob-fd=", &a)) {
+ option_cat_blob_fd(a);
continue;
}
- die("unknown option %s", a);
+ die("unknown option --%s", a);
}
if (i != global_argc)
usage(fast_import_usage);
@@ -3393,26 +3380,27 @@ int main(int argc, char **argv)
set_die_routine(die_nicely);
set_checkpoint_signal();
while (read_next_command() != EOF) {
+ const char *v;
if (!strcmp("blob", command_buf.buf))
parse_new_blob();
- else if (starts_with(command_buf.buf, "ls "))
- parse_ls(NULL);
- else if (starts_with(command_buf.buf, "commit "))
- parse_new_commit();
- else if (starts_with(command_buf.buf, "tag "))
- parse_new_tag();
- else if (starts_with(command_buf.buf, "reset "))
- parse_reset_branch();
+ else if (skip_prefix(command_buf.buf, "ls ", &v))
+ parse_ls(v, NULL);
+ else if (skip_prefix(command_buf.buf, "commit ", &v))
+ parse_new_commit(v);
+ else if (skip_prefix(command_buf.buf, "tag ", &v))
+ parse_new_tag(v);
+ else if (skip_prefix(command_buf.buf, "reset ", &v))
+ parse_reset_branch(v);
else if (!strcmp("checkpoint", command_buf.buf))
parse_checkpoint();
else if (!strcmp("done", command_buf.buf))
break;
else if (starts_with(command_buf.buf, "progress "))
parse_progress();
- else if (starts_with(command_buf.buf, "feature "))
- parse_feature();
- else if (starts_with(command_buf.buf, "option git "))
- parse_option();
+ else if (skip_prefix(command_buf.buf, "feature ", &v))
+ parse_feature(v);
+ else if (skip_prefix(command_buf.buf, "option git ", &v))
+ parse_option(v);
else if (starts_with(command_buf.buf, "option "))
/* ignore non-git options*/;
else
generated by cgit v0.10.2-6-g49f6 at 2024-04-25 15:15:26 (GMT)