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04427ac848
The original implementation of textconv put the conversion into fill_mmfile. This was a bad idea for a number of reasons: - it made the semantics of fill_mmfile unclear. In some cases, it was allocating data (if a text conversion occurred), and in some cases not (if we could use the data directly from the filespec). But the caller had no idea which had happened, and so didn't know whether the memory should be freed - similarly, the caller had no idea if a text conversion had occurred, and so didn't know whether the contents should be treated as binary or not. This meant that we incorrectly guessed that text-converted content was binary and didn't actually show it (unless the user overrode us with "diff.foo.binary = false", which then created problems in plumbing where the text conversion did _not_ occur) - not all callers of fill_mmfile want the text contents. In particular, we don't really want diffstat, whitespace checks, patch id generation, etc, to look at the converted contents. This patch pulls the conversion code directly into builtin_diff, so that we only see the conversion when generating an actual patch. We also then know whether we are doing a conversion, so we can check the binary-ness and free the data from the mmfile appropriately (the previous version leaked quite badly when text conversion was used) Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
119 lines
2.5 KiB
Bash
Executable file
119 lines
2.5 KiB
Bash
Executable file
#!/bin/sh
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test_description='diff.*.textconv tests'
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. ./test-lib.sh
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find_diff() {
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sed '1,/^index /d' | sed '/^-- $/,$d'
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}
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cat >expect.binary <<'EOF'
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Binary files a/file and b/file differ
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EOF
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cat >expect.text <<'EOF'
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--- a/file
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+++ b/file
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@@ -1 +1,2 @@
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0
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+1
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EOF
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cat >hexdump <<'EOF'
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#!/bin/sh
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perl -e '$/ = undef; $_ = <>; s/./ord($&)/ge; print $_' "$1"
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EOF
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chmod +x hexdump
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test_expect_success 'setup binary file with history' '
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printf "\\0\\n" >file &&
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git add file &&
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git commit -m one &&
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printf "\\1\\n" >>file &&
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git add file &&
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git commit -m two
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'
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test_expect_success 'file is considered binary by porcelain' '
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git diff HEAD^ HEAD >diff &&
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find_diff <diff >actual &&
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test_cmp expect.binary actual
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'
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test_expect_success 'file is considered binary by plumbing' '
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git diff-tree -p HEAD^ HEAD >diff &&
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find_diff <diff >actual &&
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test_cmp expect.binary actual
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'
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test_expect_success 'setup textconv filters' '
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echo file diff=foo >.gitattributes &&
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git config diff.foo.textconv "$PWD"/hexdump &&
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git config diff.fail.textconv false
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'
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test_expect_success 'diff produces text' '
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git diff HEAD^ HEAD >diff &&
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find_diff <diff >actual &&
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test_cmp expect.text actual
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'
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test_expect_success 'diff-tree produces binary' '
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git diff-tree -p HEAD^ HEAD >diff &&
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find_diff <diff >actual &&
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test_cmp expect.binary actual
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'
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test_expect_success 'log produces text' '
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git log -1 -p >log &&
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find_diff <log >actual &&
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test_cmp expect.text actual
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'
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test_expect_failure 'format-patch produces binary' '
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git format-patch --no-binary --stdout HEAD^ >patch &&
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find_diff <patch >actual &&
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test_cmp expect.binary actual
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'
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cat >expect.stat <<'EOF'
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file | Bin 2 -> 4 bytes
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1 files changed, 0 insertions(+), 0 deletions(-)
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EOF
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test_expect_success 'diffstat does not run textconv' '
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echo file diff=fail >.gitattributes &&
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git diff --stat HEAD^ HEAD >actual &&
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test_cmp expect.stat actual
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'
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# restore working setup
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echo file diff=foo >.gitattributes
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cat >expect.typechange <<'EOF'
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--- a/file
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+++ /dev/null
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@@ -1,2 +0,0 @@
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-0
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-1
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diff --git a/file b/file
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new file mode 120000
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index ad8b3d2..67be421
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--- /dev/null
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+++ b/file
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@@ -0,0 +1 @@
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+frotz
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\ No newline at end of file
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EOF
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# make a symlink the hard way that works on symlink-challenged file systems
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test_expect_failure 'textconv does not act on symlinks' '
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echo -n frotz > file &&
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git add file &&
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git ls-files -s | sed -e s/100644/120000/ |
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git update-index --index-info &&
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git commit -m typechange &&
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git show >diff &&
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find_diff <diff >actual &&
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test_cmp expect.typechange actual
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'
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test_done
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