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win32: mimic git_path_dirload_with_stat closely

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This commit is contained in:
Edward Thomson 2015-04-28 12:24:08 -04:00
parent b3f6cef066
commit c074d7a4c5
1 changed files with 29 additions and 41 deletions
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70
src/win32/path_w32.c
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@ -30,8 +30,6 @@
#define path__is_unc(p) \
(((p)[0] == '\\' && (p)[1] == '\\') || ((p)[0] == '/' && (p)[1] == '/'))
#define PATH__MAX_UNC_LEN (32767)
/* Using _FIND_FIRST_EX_LARGE_FETCH may increase performance in Windows 7
* and better. Prior versions will ignore this.
*/
@ -318,20 +316,25 @@ GIT_INLINE(int) path_with_stat_alloc(
git_path_with_stat **out,
const char *parent_path,
size_t parent_path_len,
const char *child_path,
size_t child_path_len,
const wchar_t *child_path_utf16,
bool trailing_slash)
{
git_path_with_stat *ps;
int inner_slash =
(parent_path_len > 0 && parent_path[parent_path_len-1] != '/');
size_t path_len, ps_size;
size_t path_len, child_path_len, ps_size;
if ((child_path_len = git__utf16_to_8(NULL, 0, child_path_utf16)) < 0) {
giterr_set(GITERR_OS, "Could not convert path to UTF-8 (path too long?)");
return -1;
}
GITERR_CHECK_ALLOC_ADD(&path_len, parent_path_len, inner_slash);
GITERR_CHECK_ALLOC_ADD(&path_len, path_len, child_path_len);
GITERR_CHECK_ALLOC_ADD(&path_len, path_len, trailing_slash ? 1 : 0);
GITERR_CHECK_ALLOC_ADD(&ps_size, sizeof(git_path_with_stat), path_len);
GITERR_CHECK_ALLOC_ADD(&ps_size, ps_size, 1);
ps = git__calloc(1, ps_size);
GITERR_CHECK_ALLOC(ps);
@ -342,7 +345,13 @@ GIT_INLINE(int) path_with_stat_alloc(
if (inner_slash)
ps->path[parent_path_len] = '/';
memcpy(&ps->path[parent_path_len + inner_slash], child_path, child_path_len);
if (git__utf16_to_8(
&ps->path[parent_path_len + inner_slash],
child_path_len + 1, child_path_utf16) != child_path_len) {
git__free(ps);
giterr_set(GITERR_OS, "Could not convert path to UTF-8 (size changed)");
return -1;
}
if (trailing_slash)
ps->path[path_len-1] = '/';
@ -370,9 +379,8 @@ int git_win32_path_dirload_with_stat(
size_t cmp_len;
size_t start_len = start_stat ? strlen(start_stat) : 0;
size_t end_len = end_stat ? strlen(end_stat) : 0;
char work_path[PATH__MAX_UNC_LEN];
const char *suffix;
size_t path_len, work_path_len, suffix_len;
size_t path_len, suffix_len;
if (!git_win32__findfirstfile_filter(pathw, path)) {
giterr_set(GITERR_OS, "Could not parse the path '%s'", path);
@ -387,9 +395,9 @@ int git_win32_path_dirload_with_stat(
suffix = path + prefix_len;
suffix_len = path_len - prefix_len;
/* use of FIND_FIRST_EX_LARGE_FETCH flag in the FindFirstFileExW call could benefit perormance
* here when querying large repositories on Windows 7 (0x0600) or newer versions of Windows.
* doing so could introduce compatibility issues on older versions of Windows. */
/* We use FIND_FIRST_EX_LARGE_FETCH here for a minor perf bump; this
* flag should be ignored on previous version of Windows.
*/
dir.h = FindFirstFileExW(
pathw,
FindExInfoBasic,
@ -408,46 +416,26 @@ int git_win32_path_dirload_with_stat(
if (git_path_is_dot_or_dotdotW(dir.f.cFileName))
continue;
if ((work_path_len = git__utf16_to_8(work_path, PATH__MAX_UNC_LEN, dir.f.cFileName)) < 0) {
error = -1;
giterr_set(GITERR_OS, "Could not convert path to UTF-8 (path too long?)");
goto clean_up_and_exit;
}
work_path[work_path_len] = '\0';
/* TODO: what about junctions to directories? */
if ((error = path_with_stat_alloc(&ps,
suffix, suffix_len,
work_path, work_path_len,
suffix, suffix_len, dir.f.cFileName,
(dir.f.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0)) < 0)
goto clean_up_and_exit;
/* skip if before start_stat or after end_stat */
cmp_len = min(start_len, work_path_len);
if (cmp_len && strncomp(ps->path, start_stat, cmp_len) < 0) {
git__free(ps);
continue;
}
git_vector_insert(contents, ps);
cmp_len = min(end_len, work_path_len);
if (cmp_len && strncomp(ps->path, end_stat, cmp_len) > 0) {
git__free(ps);
/* skip stat if before start_stat or after end_stat */
cmp_len = min(start_len, ps->path_len);
if (cmp_len && strncomp(ps->path, start_stat, cmp_len) < 0)
continue;
cmp_len = min(end_len, ps->path_len);
if (cmp_len && strncomp(ps->path, end_stat, cmp_len) > 0)
continue;
}
if ((error = git_win32__file_attribute_to_stat(&ps->st,
(WIN32_FILE_ATTRIBUTE_DATA *)&dir.f,
NULL)) < 0) {
git__free(ps);
NULL)) < 0)
goto clean_up_and_exit;
}
if (!S_ISDIR(ps->st.st_mode) && !S_ISREG(ps->st.st_mode) && !S_ISLNK(ps->st.st_mode)) {
git__free(ps);
continue;
}
git_vector_insert(contents, ps);
} while (FindNextFileW(dir.h, &dir.f));
if (GetLastError() != ERROR_NO_MORE_FILES) {