This allows the fronted to require a specific feature to be supported
by the frontend, or abort.
Also add support for four initial feature, date-format=, force=,
import-marks=, export-marks=.
Signed-off-by: Sverre Rabbelier <srabbelier@xxxxxxxxx>
---
Updated documentation, reject feature commands after a data command,
as per Shawn's comments. Also factor out parse_one_feature from
parse_feature so that we can re-use it in patch 4/7.
This also has the previous 4/6 squashed in (which added tests)
Documentation/git-fast-import.txt | 25 +++++++++++++
fast-import.c | 38 ++++++++++++++++++++
t/t9300-fast-import.sh | 70 +++++++++++++++++++++++++++++++++++++
3 files changed, 133 insertions(+), 0 deletions(-)
diff --git a/Documentation/git-fast-import.txt b/Documentation/git-fast-import.txt
index 288032c..4357c21 100644
--- a/Documentation/git-fast-import.txt
+++ b/Documentation/git-fast-import.txt
@@ -303,6 +303,10 @@ and control the current import process. More detailed discussion
standard output. This command is optional and is not needed
to perform an import.
+`feature`::
+ Require that fast-import supports the specified feature, or
+ abort if it does not.
+
`commit`
~~~~~~~~
Create or update a branch with a new commit, recording one logical
@@ -846,6 +850,27 @@ Placing a `progress` command immediately after a `checkpoint` will
inform the reader when the `checkpoint` has been completed and it
can safely access the refs that fast-import updated.
+`feature`
+~~~~~~~~~
+Require that fast-import supports the specified feature, or abort if
+it does not.
+
+....
+ 'feature' SP <feature> LF
+....
+
+The <feature> part of the command may be any string matching
+^[a-zA-Z][a-zA-Z-]*$ and should be understood by fast-import.
+
+Feature work identical as their option counterparts.
+
+The following features are currently supported:
+
+* date-format
+* import-marks
+* export-marks
+* force
+
Crash Reports
-------------
If fast-import is supplied invalid input it will terminate with a
diff --git a/fast-import.c b/fast-import.c
index 0458b03..ce0cd4e 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -353,6 +353,7 @@ static struct recent_command *rc_free;
static unsigned int cmd_save = 100;
static uintmax_t next_mark;
static struct strbuf new_data = STRBUF_INIT;
+static int seen_data_command;
static void write_branch_report(FILE *rpt, struct branch *b)
{
@@ -1704,6 +1705,11 @@ static int read_next_command(void)
if (stdin_eof)
return EOF;
+ if (!seen_data_command
+ && prefixcmp(command_buf.buf, "feature ")) {
+ seen_data_command = 1;
+ }
+
rc = rc_free;
if (rc)
rc_free = rc->next;
@@ -2533,6 +2539,36 @@ static void parse_one_option(const char *option)
}
}
+static int parse_one_feature(const char *feature)
+{
+ if (!prefixcmp(feature, "date-format=")) {
+ option_date_format(feature + 12);
+ } else if (!prefixcmp(feature, "import-marks=")) {
+ option_import_marks(feature + 13);
+ } else if (!prefixcmp(feature, "export-marks=")) {
+ option_export_marks(feature + 13);
+ } else if (!prefixcmp(feature, "force")) {
+ force_update = 1;
+ } else {
+ return 0;
+ }
+
+ return 1;
+}
+
+static void parse_feature(void)
+{
+ char *feature = command_buf.buf + 8;
+
+ if (seen_data_command)
+ die("Got feature command '%s' after data command", feature);
+
+ if (parse_one_feature(feature))
+ return;
+
+ die("This version of fast-import does not support feature %s.", feature);
+}
+
static int git_pack_config(const char *k, const char *v, void *cb)
{
if (!strcmp(k, "pack.depth")) {
@@ -2612,6 +2648,8 @@ int main(int argc, const char **argv)
parse_checkpoint();
else if (!prefixcmp(command_buf.buf, "progress "))
parse_progress();
+ else if (!prefixcmp(command_buf.buf, "feature "))
+ parse_feature();
else
die("Unsupported command: %s", command_buf.buf);
}
diff --git a/t/t9300-fast-import.sh b/t/t9300-fast-import.sh
index b49815d..b2c521f 100755
--- a/t/t9300-fast-import.sh
+++ b/t/t9300-fast-import.sh
@@ -1254,4 +1254,74 @@ test_expect_success \
'Q: verify note for third commit' \
'git cat-file blob refs/notes/foobar:$commit3 >actual && test_cmp expect actual'
+###
+### series R (feature)
+###
+
+cat >input <<EOF
+feature no-such-feature-exists
+EOF
+
+test_expect_success 'R: abort on unsupported feature' '
+ test_must_fail git fast-import <input
+'
+
+cat >input <<EOF
+feature date-format=now
+EOF
+
+test_expect_success 'R: supported feature is accepted' '
+ git fast-import <input
+'
+
+cat >input << EOF
+blob
+data 3
+hi
+feature date-format=now
+EOF
+
+test_expect_success 'R: abort on receiving feature after data command' '
+ test_must_fail git fast-import <input
+'
+
+cat >input << EOF
+feature export-marks=git.marks
+blob
+mark :1
+data 3
+hi
+
+EOF
+
+test_expect_success \
+ 'R: export-marks feature results in a marks file being created' \
+ 'cat input | git fast-import &&
+ grep :1 git.marks'
+
+test_expect_success \
+ 'R: export-marks options can be overriden by commandline options' \
+ 'cat input | git fast-import --export-marks=other.marks &&
+ grep :1 other.marks'
+
+cat >input << EOF
+feature import-marks=marks.out
+feature export-marks=marks.new
+EOF
+
+test_expect_success \
+ 'R: import to output marks works without any content' \
+ 'cat input | git fast-import &&
+ test_cmp marks.out marks.new'
+
+cat >input <<EOF
+feature import-marks=nonexistant.marks
+feature export-marks=marks.new
+EOF
+
+test_expect_success \
+ 'R: import marks prefers commandline marks file over the stream' \
+ 'cat input | git fast-import --import-marks=marks.out &&
+ test_cmp marks.out marks.new'
+
test_done
--
1.6.5.3.164.g07b0c
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