[PATCH] fast-export: quote paths in output
From: Jeff King <hidden>
Date: 2016-06-15 22:51:45
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 <redacted>
---
builtin/fast-export.c | 31 ++++++++++++++++++++++++-------
t/t9350-fast-export.sh | 26 +++++++++++++++++++++++++-
2 files changed, 49 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..4673ac0 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 +414,28 @@ 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 && + >"$(printf "path with\\nnewline")" && + >"path with \"quote\"" && + >"path with \\backslash" && + >"path with space" && + git add . && + git commit -m addition && + mkdir subdir && + git mv path* subdir && + git commit -m rename && + git rm -r subdir && + 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