#include "cache.h" #include "dir.h" #include "pathspec.h" /* * Finds which of the given pathspecs match items in the index. * * For each pathspec, sets the corresponding entry in the seen[] array * (which should be specs items long, i.e. the same size as pathspec) * to the nature of the "closest" (i.e. most specific) match found for * that pathspec in the index, if it was a closer type of match than * the existing entry. As an optimization, matching is skipped * altogether if seen[] already only contains non-zero entries. * * If seen[] has not already been written to, it may make sense * to use find_pathspecs_matching_against_index() instead. */ void add_pathspec_matches_against_index(const struct pathspec *pathspec, char *seen) { int num_unmatched = 0, i; /* * Since we are walking the index as if we were walking the directory, * we have to mark the matched pathspec as seen; otherwise we will * mistakenly think that the user gave a pathspec that did not match * anything. */ for (i = 0; i < pathspec->nr; i++) if (!seen[i]) num_unmatched++; if (!num_unmatched) return; for (i = 0; i < active_nr; i++) { struct cache_entry *ce = active_cache[i]; match_pathspec_depth(pathspec, ce->name, ce_namelen(ce), 0, seen); } } /* * Finds which of the given pathspecs match items in the index. * * This is a one-shot wrapper around add_pathspec_matches_against_index() * which allocates, populates, and returns a seen[] array indicating the * nature of the "closest" (i.e. most specific) matches which each of the * given pathspecs achieves against all items in the index. */ char *find_pathspecs_matching_against_index(const struct pathspec *pathspec) { char *seen = xcalloc(pathspec->nr, 1); add_pathspec_matches_against_index(pathspec, seen); return seen; } /* * Magic pathspec * * Possible future magic semantics include stuff like: * * { PATHSPEC_RECURSIVE, '*', "recursive" }, * { PATHSPEC_REGEXP, '\0', "regexp" }, * */ static struct pathspec_magic { unsigned bit; char mnemonic; /* this cannot be ':'! */ const char *name; } pathspec_magic[] = { { PATHSPEC_FROMTOP, '/', "top" }, { PATHSPEC_LITERAL, 0, "literal" }, { PATHSPEC_GLOB, '\0', "glob" }, { PATHSPEC_ICASE, '\0', "icase" }, }; /* * Take an element of a pathspec and check for magic signatures. * Append the result to the prefix. Return the magic bitmap. * * For now, we only parse the syntax and throw out anything other than * "top" magic. * * NEEDSWORK: This needs to be rewritten when we start migrating * get_pathspec() users to use the "struct pathspec" interface. For * example, a pathspec element may be marked as case-insensitive, but * the prefix part must always match literally, and a single stupid * string cannot express such a case. */ static unsigned prefix_pathspec(struct pathspec_item *item, unsigned *p_short_magic, const char **raw, unsigned flags, const char *prefix, int prefixlen, const char *elt) { static int literal_global = -1; static int glob_global = -1; static int noglob_global = -1; static int icase_global = -1; unsigned magic = 0, short_magic = 0, global_magic = 0; const char *copyfrom = elt, *long_magic_end = NULL; char *match; int i, pathspec_prefix = -1; if (literal_global < 0) literal_global = git_env_bool(GIT_LITERAL_PATHSPECS_ENVIRONMENT, 0); if (literal_global) global_magic |= PATHSPEC_LITERAL; if (glob_global < 0) glob_global = git_env_bool(GIT_GLOB_PATHSPECS_ENVIRONMENT, 0); if (glob_global) global_magic |= PATHSPEC_GLOB; if (noglob_global < 0) noglob_global = git_env_bool(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, 0); if (glob_global && noglob_global) die(_("global 'glob' and 'noglob' pathspec settings are incompatible")); if (icase_global < 0) icase_global = git_env_bool(GIT_ICASE_PATHSPECS_ENVIRONMENT, 0); if (icase_global) global_magic |= PATHSPEC_ICASE; if ((global_magic & PATHSPEC_LITERAL) && (global_magic & ~PATHSPEC_LITERAL)) die(_("global 'literal' pathspec setting is incompatible " "with all other global pathspec settings")); if (elt[0] != ':' || literal_global) { ; /* nothing to do */ } else if (elt[1] == '(') { /* longhand */ const char *nextat; for (copyfrom = elt + 2; *copyfrom && *copyfrom != ')'; copyfrom = nextat) { size_t len = strcspn(copyfrom, ",)"); if (copyfrom[len] == ',') nextat = copyfrom + len + 1; else /* handle ')' and '\0' */ nextat = copyfrom + len; if (!len) continue; for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) { if (strlen(pathspec_magic[i].name) == len && !strncmp(pathspec_magic[i].name, copyfrom, len)) { magic |= pathspec_magic[i].bit; break; } if (!prefixcmp(copyfrom, "prefix:")) { char *endptr; pathspec_prefix = strtol(copyfrom + 7, &endptr, 10); if (endptr - copyfrom != len) die(_("invalid parameter for pathspec magic 'prefix'")); /* "i" would be wrong, but it does not matter */ break; } } if (ARRAY_SIZE(pathspec_magic) <= i) die(_("Invalid pathspec magic '%.*s' in '%s'"), (int) len, copyfrom, elt); } if (*copyfrom != ')') die(_("Missing ')' at the end of pathspec magic in '%s'"), elt); long_magic_end = copyfrom; copyfrom++; } else { /* shorthand */ for (copyfrom = elt + 1; *copyfrom && *copyfrom != ':'; copyfrom++) { char ch = *copyfrom; if (!is_pathspec_magic(ch)) break; for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++) if (pathspec_magic[i].mnemonic == ch) { short_magic |= pathspec_magic[i].bit; break; } if (ARRAY_SIZE(pathspec_magic) <= i) die(_("Unimplemented pathspec magic '%c' in '%s'"), ch, elt); } if (*copyfrom == ':') copyfrom++; } magic |= short_magic; *p_short_magic = short_magic; /* --noglob-pathspec adds :(literal) _unless_ :(glob) is specifed */ if (noglob_global && !(magic & PATHSPEC_GLOB)) global_magic |= PATHSPEC_LITERAL; /* --glob-pathspec is overriden by :(literal) */ if ((global_magic & PATHSPEC_GLOB) && (magic & PATHSPEC_LITERAL)) global_magic &= ~PATHSPEC_GLOB; magic |= global_magic; if (pathspec_prefix >= 0 && (prefixlen || (prefix && *prefix))) die("BUG: 'prefix' magic is supposed to be used at worktree's root"); if ((magic & PATHSPEC_LITERAL) && (magic & PATHSPEC_GLOB)) die(_("%s: 'literal' and 'glob' are incompatible"), elt); if (pathspec_prefix >= 0) { match = xstrdup(copyfrom); prefixlen = pathspec_prefix; } else if (magic & PATHSPEC_FROMTOP) { match = xstrdup(copyfrom); prefixlen = 0; } else { match = prefix_path_gently(prefix, prefixlen, &prefixlen, copyfrom); if (!match) die(_("%s: '%s' is outside repository"), elt, copyfrom); } *raw = item->match = match; /* * Prefix the pathspec (keep all magic) and assign to * original. Useful for passing to another command. */ if (flags & PATHSPEC_PREFIX_ORIGIN) { struct strbuf sb = STRBUF_INIT; const char *start = elt; if (prefixlen && !literal_global) { /* Preserve the actual prefix length of each pattern */ if (long_magic_end) { strbuf_add(&sb, start, long_magic_end - start); strbuf_addf(&sb, ",prefix:%d", prefixlen); start = long_magic_end; } else { if (*start == ':') start++; strbuf_addf(&sb, ":(prefix:%d)", prefixlen); } } strbuf_add(&sb, start, copyfrom - start); strbuf_addstr(&sb, match); item->original = strbuf_detach(&sb, NULL); } else item->original = elt; item->len = strlen(item->match); item->prefix = prefixlen; if ((flags & PATHSPEC_STRIP_SUBMODULE_SLASH_CHEAP) && (item->len >= 1 && item->match[item->len - 1] == '/') && (i = cache_name_pos(item->match, item->len - 1)) >= 0 && S_ISGITLINK(active_cache[i]->ce_mode)) { item->len--; match[item->len] = '\0'; } if (flags & PATHSPEC_STRIP_SUBMODULE_SLASH_EXPENSIVE) for (i = 0; i < active_nr; i++) { struct cache_entry *ce = active_cache[i]; int ce_len = ce_namelen(ce); if (!S_ISGITLINK(ce->ce_mode)) continue; if (item->len <= ce_len || match[ce_len] != '/' || memcmp(ce->name, match, ce_len)) continue; if (item->len == ce_len + 1) { /* strip trailing slash */ item->len--; match[item->len] = '\0'; } else die (_("Pathspec '%s' is in submodule '%.*s'"), elt, ce_len, ce->name); } if (magic & PATHSPEC_LITERAL) item->nowildcard_len = item->len; else { item->nowildcard_len = simple_length(item->match); if (item->nowildcard_len < prefixlen) item->nowildcard_len = prefixlen; } item->flags = 0; if (magic & PATHSPEC_GLOB) { /* * FIXME: should we enable ONESTAR in _GLOB for * pattern "* * / * . c"? */ } else { if (item->nowildcard_len < item->len && item->match[item->nowildcard_len] == '*' && no_wildcard(item->match + item->nowildcard_len + 1)) item->flags |= PATHSPEC_ONESTAR; } /* sanity checks, pathspec matchers assume these are sane */ assert(item->nowildcard_len <= item->len && item->prefix <= item->len); return magic; } static int pathspec_item_cmp(const void *a_, const void *b_) { struct pathspec_item *a, *b; a = (struct pathspec_item *)a_; b = (struct pathspec_item *)b_; return strcmp(a->match, b->match); } static void NORETURN unsupported_magic(const char *pattern, unsigned magic, unsigned short_magic) { struct strbuf sb = STRBUF_INIT; int i, n; for (n = i = 0; i < ARRAY_SIZE(pathspec_magic); i++) { const struct pathspec_magic *m = pathspec_magic + i; if (!(magic & m->bit)) continue; if (sb.len) strbuf_addstr(&sb, " "); if (short_magic & m->bit) strbuf_addf(&sb, "'%c'", m->mnemonic); else strbuf_addf(&sb, "'%s'", m->name); n++; } /* * We may want to substitute "this command" with a command * name. E.g. when add--interactive dies when running * "checkout -p" */ die(_("%s: pathspec magic not supported by this command: %s"), pattern, sb.buf); } /* * Given command line arguments and a prefix, convert the input to * pathspec. die() if any magic in magic_mask is used. */ void parse_pathspec(struct pathspec *pathspec, unsigned magic_mask, unsigned flags, const char *prefix, const char **argv) { struct pathspec_item *item; const char *entry = argv ? *argv : NULL; int i, n, prefixlen; memset(pathspec, 0, sizeof(*pathspec)); if (flags & PATHSPEC_MAXDEPTH_VALID) pathspec->magic |= PATHSPEC_MAXDEPTH; /* No arguments, no prefix -> no pathspec */ if (!entry && !prefix) return; if ((flags & PATHSPEC_PREFER_CWD) && (flags & PATHSPEC_PREFER_FULL)) die("BUG: PATHSPEC_PREFER_CWD and PATHSPEC_PREFER_FULL are incompatible"); /* No arguments with prefix -> prefix pathspec */ if (!entry) { static const char *raw[2]; if (flags & PATHSPEC_PREFER_FULL) return; if (!(flags & PATHSPEC_PREFER_CWD)) die("BUG: PATHSPEC_PREFER_CWD requires arguments"); pathspec->items = item = xmalloc(sizeof(*item)); memset(item, 0, sizeof(*item)); item->match = prefix; item->original = prefix; item->nowildcard_len = item->len = strlen(prefix); item->prefix = item->len; raw[0] = prefix; raw[1] = NULL; pathspec->nr = 1; pathspec->_raw = raw; return; } n = 0; while (argv[n]) n++; pathspec->nr = n; pathspec->items = item = xmalloc(sizeof(*item) * n); pathspec->_raw = argv; prefixlen = prefix ? strlen(prefix) : 0; for (i = 0; i < n; i++) { unsigned short_magic; entry = argv[i]; item[i].magic = prefix_pathspec(item + i, &short_magic, argv + i, flags, prefix, prefixlen, entry); if (item[i].magic & magic_mask) unsupported_magic(entry, item[i].magic & magic_mask, short_magic); if ((flags & PATHSPEC_SYMLINK_LEADING_PATH) && has_symlink_leading_path(item[i].match, item[i].len)) { die(_("pathspec '%s' is beyond a symbolic link"), entry); } if (item[i].nowildcard_len < item[i].len) pathspec->has_wildcard = 1; pathspec->magic |= item[i].magic; } if (pathspec->magic & PATHSPEC_MAXDEPTH) { if (flags & PATHSPEC_KEEP_ORDER) die("BUG: PATHSPEC_MAXDEPTH_VALID and PATHSPEC_KEEP_ORDER are incompatible"); qsort(pathspec->items, pathspec->nr, sizeof(struct pathspec_item), pathspec_item_cmp); } } /* * N.B. get_pathspec() is deprecated in favor of the "struct pathspec" * based interface - see pathspec.c:parse_pathspec(). * * Arguments: * - prefix - a path relative to the root of the working tree * - pathspec - a list of paths underneath the prefix path * * Iterates over pathspec, prepending each path with prefix, * and return the resulting list. * * If pathspec is empty, return a singleton list containing prefix. * * If pathspec and prefix are both empty, return an empty list. * * This is typically used by built-in commands such as add.c, in order * to normalize argv arguments provided to the built-in into a list of * paths to process, all relative to the root of the working tree. */ const char **get_pathspec(const char *prefix, const char **pathspec) { struct pathspec ps; parse_pathspec(&ps, PATHSPEC_ALL_MAGIC & ~(PATHSPEC_FROMTOP | PATHSPEC_LITERAL), PATHSPEC_PREFER_CWD, prefix, pathspec); return ps._raw; } void copy_pathspec(struct pathspec *dst, const struct pathspec *src) { *dst = *src; dst->items = xmalloc(sizeof(struct pathspec_item) * dst->nr); memcpy(dst->items, src->items, sizeof(struct pathspec_item) * dst->nr); } void free_pathspec(struct pathspec *pathspec) { free(pathspec->items); pathspec->items = NULL; }