On Fri, Aug 05, 2011 at 01:12:06PM +0200, Johannes Sixt wrote:
> Am 8/5/2011 12:55, schrieb Jeff King:
> > +test_expect_success 'fast-export quotes pathnames' '
> > + git init crazy-paths &&
> > + (cd crazy-paths &&
> > + >"$(printf "path with\\nnewline")" &&
> > + >"path with \"quote\"" &&
> > + >"path with \\backslash" &&
> > + >"path with space" &&
>
> Please construct the tree object using git-update-index's --cacheinfo or
> --index-info rather than using actual files and git add so that the test
> can pass on filesystems that do not allow newlines, quotes, or
> backslashes(!) in filenames.
Sorry, I should have thought of that myself. Here's an updated version.
-- >8 --
Subject: [PATCH] fast-export: quote paths in output
Many pathnames in a fast-import stream need to be quoted. In
particular:
1. Pathnames at the end of an "M" or "D" line need quoting
if they contain a LF or start with double-quote.
2. Pathnames on a "C" or "R" line need quoting as above,
but also if they contain spaces.
For (1), we weren't quoting at all. For (2), we put
double-quotes around the paths to handle spaces, but ignored
the possibility that they would need further quoting.
This patch checks whether each pathname needs c-style
quoting, and uses it. This is slightly overkill for (1),
which doesn't actually need to quote many characters that
vanilla c-style quoting does. However, it shouldn't hurt, as
any implementation needs to be ready to handle quoted
strings anyway.
In addition to adding a test, we have to tweak a test which
blindly assumed that case (2) would always use
double-quotes, whether it needed to or not.
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
builtin/fast-export.c | 31 ++++++++++++++++++++++++-------
t/t9350-fast-export.sh | 28 +++++++++++++++++++++++++++-
2 files changed, 51 insertions(+), 8 deletions(-)
diff --git a/builtin/fast-export.c b/builtin/fast-export.c
index becef85..9836e6b 100644
--- a/builtin/fast-export.c
+++ b/builtin/fast-export.c
@@ -16,6 +16,7 @@
#include "string-list.h"
#include "utf8.h"
#include "parse-options.h"
+#include "quote.h"
static const char *fast_export_usage[] = {
"git fast-export [rev-list-opts]",
@@ -179,6 +180,15 @@ static int depth_first(const void *a_, const void *b_)
return (a->status == 'R') - (b->status == 'R');
}
+static void print_path(const char *path)
+{
+ int need_quote = quote_c_style(path, NULL, NULL, 0);
+ if (need_quote)
+ quote_c_style(path, NULL, stdout, 0);
+ else
+ printf("%s", path);
+}
+
static void show_filemodify(struct diff_queue_struct *q,
struct diff_options *options, void *data)
{
@@ -196,13 +206,18 @@ static void show_filemodify(struct diff_queue_struct *q,
switch (q->queue[i]->status) {
case DIFF_STATUS_DELETED:
- printf("D %s\n", spec->path);
+ printf("D ");
+ print_path(spec->path);
+ putchar('\n');
break;
case DIFF_STATUS_COPIED:
case DIFF_STATUS_RENAMED:
- printf("%c \"%s\" \"%s\"\n", q->queue[i]->status,
- ospec->path, spec->path);
+ printf("%c ", q->queue[i]->status);
+ print_path(ospec->path);
+ putchar(' ');
+ print_path(spec->path);
+ putchar('\n');
if (!hashcmp(ospec->sha1, spec->sha1) &&
ospec->mode == spec->mode)
@@ -217,13 +232,15 @@ static void show_filemodify(struct diff_queue_struct *q,
* output the SHA-1 verbatim.
*/
if (no_data || S_ISGITLINK(spec->mode))
- printf("M %06o %s %s\n", spec->mode,
- sha1_to_hex(spec->sha1), spec->path);
+ printf("M %06o %s ", spec->mode,
+ sha1_to_hex(spec->sha1));
else {
struct object *object = lookup_object(spec->sha1);
- printf("M %06o :%d %s\n", spec->mode,
- get_object_mark(object), spec->path);
+ printf("M %06o :%d ", spec->mode,
+ get_object_mark(object));
}
+ print_path(spec->path);
+ putchar('\n');
break;
default:
diff --git a/t/t9350-fast-export.sh b/t/t9350-fast-export.sh
index f823c05..950d0ff 100755
--- a/t/t9350-fast-export.sh
+++ b/t/t9350-fast-export.sh
@@ -228,7 +228,7 @@ test_expect_success 'fast-export -C -C | fast-import' '
mkdir new &&
git --git-dir=new/.git init &&
git fast-export -C -C --signed-tags=strip --all > output &&
- grep "^C \"file6\" \"file7\"\$" output &&
+ grep "^C file6 file7\$" output &&
cat output |
(cd new &&
git fast-import &&
@@ -414,4 +414,30 @@ test_expect_success SYMLINKS 'directory becomes symlink' '
(cd result && git show master:foo)
'
+test_expect_success 'fast-export quotes pathnames' '
+ git init crazy-paths &&
+ (cd crazy-paths &&
+ blob=`echo foo | git hash-object -w --stdin` &&
+ git update-index --add \
+ --cacheinfo 100644 $blob "$(printf "path with\\nnewline")" \
+ --cacheinfo 100644 $blob "path with \"quote\"" \
+ --cacheinfo 100644 $blob "path with \\backslash" \
+ --cacheinfo 100644 $blob "path with space" &&
+ git commit -m addition &&
+ git ls-files -z -s | perl -0pe "s{\\t}{$&subdir/}" >index &&
+ git read-tree --empty &&
+ git update-index -z --index-info <index &&
+ git commit -m rename &&
+ git read-tree --empty &&
+ git commit -m deletion &&
+ git fast-export HEAD >export.out &&
+ git rev-list HEAD >expect &&
+ git init result &&
+ cd result &&
+ git fast-import <../export.out &&
+ git rev-list HEAD >actual &&
+ test_cmp ../expect actual
+ )
+'
+
test_done
--
1.7.6.rc0.36.gd385b.dirty
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