diff options
Diffstat (limited to 'tree-walk.c')
| -rw-r--r-- | tree-walk.c | 85 |
1 files changed, 76 insertions, 9 deletions
diff --git a/tree-walk.c b/tree-walk.c index 492c7cd..6e30ef9 100644 --- a/tree-walk.c +++ b/tree-walk.c @@ -490,11 +490,11 @@ int get_tree_entry(const unsigned char *tree_sha1, const char *name, unsigned ch static int match_entry(const struct name_entry *entry, int pathlen, const char *match, int matchlen, - int *never_interesting) + enum interesting *never_interesting) { int m = -1; /* signals that we haven't called strncmp() */ - if (*never_interesting) { + if (*never_interesting != entry_not_interesting) { /* * We have not seen any match that sorts later * than the current path. @@ -522,7 +522,7 @@ static int match_entry(const struct name_entry *entry, int pathlen, * the variable to -1 and that is what will be * returned, allowing the caller to terminate early. */ - *never_interesting = 0; + *never_interesting = entry_not_interesting; } if (pathlen > matchlen) @@ -573,6 +573,54 @@ static int match_dir_prefix(const char *base, } /* + * Perform matching on the leading non-wildcard part of + * pathspec. item->nowildcard_len must be greater than zero. Return + * non-zero if base is matched. + */ +static int match_wildcard_base(const struct pathspec_item *item, + const char *base, int baselen, + int *matched) +{ + const char *match = item->match; + /* the wildcard part is not considered in this function */ + int matchlen = item->nowildcard_len; + + if (baselen) { + int dirlen; + /* + * Return early if base is longer than the + * non-wildcard part but it does not match. + */ + if (baselen >= matchlen) { + *matched = matchlen; + return !strncmp(base, match, matchlen); + } + + dirlen = matchlen; + while (dirlen && match[dirlen - 1] != '/') + dirlen--; + + /* + * Return early if base is shorter than the + * non-wildcard part but it does not match. Note that + * base ends with '/' so we are sure it really matches + * directory + */ + if (strncmp(base, match, baselen)) + return 0; + *matched = baselen; + } else + *matched = 0; + /* + * we could have checked entry against the non-wildcard part + * that is not in base and does similar never_interesting + * optimization as in match_entry. For now just be happy with + * base comparison. + */ + return entry_interesting; +} + +/* * Is a tree entry interesting given the pathspec we have? * * Pre-condition: either baselen == base_offset (i.e. empty path) @@ -584,7 +632,7 @@ enum interesting tree_entry_interesting(const struct name_entry *entry, { int i; int pathlen, baselen = base->len - base_offset; - int never_interesting = ps->has_wildcard ? + enum interesting never_interesting = ps->has_wildcard ? entry_not_interesting : all_entries_not_interesting; if (!ps->nr) { @@ -602,7 +650,7 @@ enum interesting tree_entry_interesting(const struct name_entry *entry, const struct pathspec_item *item = ps->items+i; const char *match = item->match; const char *base_str = base->buf + base_offset; - int matchlen = item->len; + int matchlen = item->len, matched = 0; if (baselen >= matchlen) { /* If it doesn't match, move along... */ @@ -626,8 +674,10 @@ enum interesting tree_entry_interesting(const struct name_entry *entry, &never_interesting)) return entry_interesting; - if (item->use_wildcard) { - if (!fnmatch(match + baselen, entry->path, 0)) + if (item->nowildcard_len < item->len) { + if (!git_fnmatch(match + baselen, entry->path, + item->flags & PATHSPEC_ONESTAR ? GFNM_ONESTAR : 0, + item->nowildcard_len - baselen)) return entry_interesting; /* @@ -642,17 +692,34 @@ enum interesting tree_entry_interesting(const struct name_entry *entry, } match_wildcards: - if (!item->use_wildcard) + if (item->nowildcard_len == item->len) continue; + if (item->nowildcard_len && + !match_wildcard_base(item, base_str, baselen, &matched)) + return entry_not_interesting; + /* * Concatenate base and entry->path into one and do * fnmatch() on it. + * + * While we could avoid concatenation in certain cases + * [1], which saves a memcpy and potentially a + * realloc, it turns out not worth it. Measurement on + * linux-2.6 does not show any clear improvements, + * partly because of the nowildcard_len optimization + * in git_fnmatch(). Avoid micro-optimizations here. + * + * [1] if match_wildcard_base() says the base + * directory is already matched, we only need to match + * the rest, which is shorter so _in theory_ faster. */ strbuf_add(base, entry->path, pathlen); - if (!fnmatch(match, base->buf + base_offset, 0)) { + if (!git_fnmatch(match, base->buf + base_offset, + item->flags & PATHSPEC_ONESTAR ? GFNM_ONESTAR : 0, + item->nowildcard_len)) { strbuf_setlen(base, base_offset + baselen); return entry_interesting; } |