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diff: generate pretty filenames in prep_temp_blob()

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Naturally, prep_temp_blob() did not care about filenames.
As a result, GIT_EXTERNAL_DIFF and textconv generated
filenames such as ".diff_XXXXXX".

This modifies prep_temp_blob() to generate user-friendly
filenames when creating temporary files.

Diffing "name.ext" now generates "XXXXXX_name.ext".

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
David Aguilar 2009-05-31 01:35:52 -07:00 committed by Junio C Hamano
parent e1c0688692
commit 003b33a8ad
4 changed files with 38 additions and 1 deletions
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2
cache.h
View file

@ -614,6 +614,8 @@ extern int is_empty_blob_sha1(const unsigned char *sha1);
int git_mkstemp(char *path, size_t n, const char *template);
int git_mkstemps(char *path, size_t n, const char *template, int suffix_len);
/*
* NOTE NOTE NOTE!!
*

12
diff.c
View file

@ -1964,8 +1964,16 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
{
int fd;
struct strbuf buf = STRBUF_INIT;
struct strbuf template = STRBUF_INIT;
char *path_dup = xstrdup(path);
const char *base = basename(path_dup);
fd = git_mkstemp(temp->tmp_path, PATH_MAX, ".diff_XXXXXX");
/* Generate "XXXXXX_basename.ext" */
strbuf_addstr(&template, "XXXXXX_");
strbuf_addstr(&template, base);
fd = git_mkstemps(temp->tmp_path, PATH_MAX, template.buf,
strlen(base) + 1);
if (fd < 0)
die("unable to create temp-file: %s", strerror(errno));
if (convert_to_working_tree(path,
@ -1981,6 +1989,8 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp,
temp->hex[40] = 0;
sprintf(temp->mode, "%06o", mode);
strbuf_release(&buf);
strbuf_release(&template);
free(path_dup);
}
static struct diff_tempfile *prepare_temp_file(const char *name,

16
path.c
View file

@ -139,6 +139,22 @@ int git_mkstemp(char *path, size_t len, const char *template)
return mkstemp(path);
}
/* git_mkstemps() - create tmp file with suffix honoring TMPDIR variable. */
int git_mkstemps(char *path, size_t len, const char *template, int suffix_len)
{
const char *tmp;
size_t n;
tmp = getenv("TMPDIR");
if (!tmp)
tmp = "/tmp";
n = snprintf(path, len, "%s/%s", tmp, template);
if (len <= n) {
errno = ENAMETOOLONG;
return -1;
}
return mkstemps(path, suffix_len);
}
int validate_headref(const char *path)
{

9
t/t4020-diff-external.sh
View file

@ -136,6 +136,15 @@ test_expect_success 'GIT_EXTERNAL_DIFF with more than one changed files' '
GIT_EXTERNAL_DIFF=echo git diff
'
test_expect_success 'GIT_EXTERNAL_DIFF generates pretty paths' '
touch file.ext &&
git add file.ext &&
echo with extension > file.ext &&
GIT_EXTERNAL_DIFF=echo git diff file.ext | grep ......_file\.ext &&
git update-index --force-remove file.ext &&
rm file.ext
'
echo "#!$SHELL_PATH" >fake-diff.sh
cat >> fake-diff.sh <<\EOF
cat $2 >> crlfed.txt