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is_hfs_dotgit: match other .git files 

Both verify_path() and fsck match ".git", ".GIT", and other
variants specific to HFS+. Let's allow matching other
special files like ".gitmodules", which we'll later use to
enforce extra restrictions via verify_path() and fsck.

Signed-off-by: Jeff King <peff@peff.net>
This commit is contained in:
Jeff King 2018-05-02 15:23:45 -04:00
parent 11a9f4d807
commit 0fc333ba20
2 changed files with 51 additions and 12 deletions
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58
utf8.c
View File

@ -619,28 +619,33 @@ static ucs_char_t next_hfs_char(const char **in)
}
}
int is_hfs_dotgit(const char *path)
static int is_hfs_dot_generic(const char *path,
const char *needle, size_t needle_len)
{
ucs_char_t c;
c = next_hfs_char(&path);
if (c != '.')
return 0;
c = next_hfs_char(&path);
/*
* there's a great deal of other case-folding that occurs
* in HFS+, but this is enough to catch anything that will
* convert to ".git"
* in HFS+, but this is enough to catch our fairly vanilla
* hard-coded needles.
*/
if (c != 'g' && c != 'G')
return 0;
c = next_hfs_char(&path);
if (c != 'i' && c != 'I')
return 0;
c = next_hfs_char(&path);
if (c != 't' && c != 'T')
return 0;
for (; needle_len > 0; needle++, needle_len--) {
c = next_hfs_char(&path);
/*
* We know our needles contain only ASCII, so we clamp here to
* make the results of tolower() sane.
*/
if (c > 127)
return 0;
if (tolower(c) != *needle)
return 0;
}
c = next_hfs_char(&path);
if (c && !is_dir_sep(c))
return 0;
@ -648,6 +653,35 @@ int is_hfs_dotgit(const char *path)
return 1;
}
/*
* Inline wrapper to make sure the compiler resolves strlen() on literals at
* compile time.
*/
static inline int is_hfs_dot_str(const char *path, const char *needle)
{
return is_hfs_dot_generic(path, needle, strlen(needle));
}
int is_hfs_dotgit(const char *path)
{
return is_hfs_dot_str(path, "git");
}
int is_hfs_dotgitmodules(const char *path)
{
return is_hfs_dot_str(path, "gitmodules");
}
int is_hfs_dotgitignore(const char *path)
{
return is_hfs_dot_str(path, "gitignore");
}
int is_hfs_dotgitattributes(const char *path)
{
return is_hfs_dot_str(path, "gitattributes");
}
const char utf8_bom[] = "\357\273\277";
int skip_utf8_bom(char **text, size_t len)

5
utf8.h
View File

@ -52,8 +52,13 @@ int mbs_chrlen(const char **text, size_t *remainder_p, const char *encoding);
* The path should be NUL-terminated, but we will match variants of both ".git\0"
* and ".git/..." (but _not_ ".../.git"). This makes it suitable for both fsck
* and verify_path().
*
* Likewise, the is_hfs_dotgitfoo() variants look for ".gitfoo".
*/
int is_hfs_dotgit(const char *path);
int is_hfs_dotgitmodules(const char *path);
int is_hfs_dotgitignore(const char *path);
int is_hfs_dotgitattributes(const char *path);
typedef enum {
ALIGN_LEFT,