pathspec: support :(glob) syntax
:(glob)path differs from plain pathspec that it uses wildmatch with
WM_PATHNAME while the other uses fnmatch without FNM_PATHNAME. The
difference lies in how '*' (and '**') is processed.
With the introduction of :(glob) and :(literal) and their global
options --[no]glob-pathspecs, the user can:
- make everything literal by default via --noglob-pathspecs
--literal-pathspecs cannot be used for this purpose as it
disables _all_ pathspec magic.
- individually turn on globbing with :(glob)
- make everything globbing by default via --glob-pathspecs
- individually turn off globbing with :(literal)
The implication behind this is, there is no way to gain the default
matching behavior (i.e. fnmatch without FNM_PATHNAME). You either get
new globbing or literal. The old fnmatch behavior is considered
deprecated and discouraged to use.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/pathspec.c b/pathspec.c
index b6d8e74..c1e6917 100644
--- a/pathspec.c
+++ b/pathspec.c
@@ -57,7 +57,6 @@
*
* Possible future magic semantics include stuff like:
*
- * { PATHSPEC_NOGLOB, '!', "noglob" },
* { PATHSPEC_ICASE, '\0', "icase" },
* { PATHSPEC_RECURSIVE, '*', "recursive" },
* { PATHSPEC_REGEXP, '\0', "regexp" },
@@ -71,6 +70,7 @@
} pathspec_magic[] = {
{ PATHSPEC_FROMTOP, '/', "top" },
{ PATHSPEC_LITERAL, 0, "literal" },
+ { PATHSPEC_GLOB, '\0', "glob" },
};
/*
@@ -93,6 +93,8 @@
const char *elt)
{
static int literal_global = -1;
+ static int glob_global = -1;
+ static int noglob_global = -1;
unsigned magic = 0, short_magic = 0, global_magic = 0;
const char *copyfrom = elt, *long_magic_end = NULL;
char *match;
@@ -103,6 +105,22 @@
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 ((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] == '(') {
@@ -167,12 +185,24 @@
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;
@@ -248,10 +278,17 @@
item->nowildcard_len = prefixlen;
}
item->flags = 0;
- if (item->nowildcard_len < item->len &&
- item->match[item->nowildcard_len] == '*' &&
- no_wildcard(item->match + item->nowildcard_len + 1))
- item->flags |= PATHSPEC_ONESTAR;
+ 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 &&
