1 #ifndef PATHSPEC_H
2 #define PATHSPEC_H
3
4 struct index_state;
5
6 /* Pathspec magic */
7 #define PATHSPEC_FROMTOP (1<<0)
8 #define PATHSPEC_MAXDEPTH (1<<1)
9 #define PATHSPEC_LITERAL (1<<2)
10 #define PATHSPEC_GLOB (1<<3)
11 #define PATHSPEC_ICASE (1<<4)
12 #define PATHSPEC_EXCLUDE (1<<5)
13 #define PATHSPEC_ATTR (1<<6)
14 #define PATHSPEC_ALL_MAGIC \
15 (PATHSPEC_FROMTOP | \
16 PATHSPEC_MAXDEPTH | \
17 PATHSPEC_LITERAL | \
18 PATHSPEC_GLOB | \
19 PATHSPEC_ICASE | \
20 PATHSPEC_EXCLUDE | \
21 PATHSPEC_ATTR)
22
23 #define PATHSPEC_ONESTAR 1 /* the pathspec pattern satisfies GFNM_ONESTAR */
24
25 /**
26 * See glossary-context.txt for the syntax of pathspec.
27 * In memory, a pathspec set is represented by "struct pathspec" and is
28 * prepared by parse_pathspec().
29 */
30 struct pathspec {
31 int nr;
32 unsigned int has_wildcard:1;
33 unsigned int recursive:1;
34 unsigned int recurse_submodules:1;
35 unsigned magic;
36 int max_depth;
37 struct pathspec_item {
38 char *match;
39 char *original;
40 unsigned magic;
41 int len, prefix;
42 int nowildcard_len;
43 int flags;
44 int attr_match_nr;
45 struct attr_match {
46 char *value;
47 enum attr_match_mode {
48 MATCH_SET,
49 MATCH_UNSET,
50 MATCH_VALUE,
51 MATCH_UNSPECIFIED
52 } match_mode;
53 } *attr_match;
54 struct attr_check *attr_check;
55 } *items;
56 };
57
58 #define GUARD_PATHSPEC(ps, mask) \
59 do { \
60 if ((ps)->magic & ~(mask)) \
61 die("BUG:%s:%d: unsupported magic %x", \
62 __FILE__, __LINE__, (ps)->magic & ~(mask)); \
63 } while (0)
64
65 /* parse_pathspec flags */
66 #define PATHSPEC_PREFER_CWD (1<<0) /* No args means match cwd */
67 #define PATHSPEC_PREFER_FULL (1<<1) /* No args means match everything */
68 #define PATHSPEC_MAXDEPTH_VALID (1<<2) /* max_depth field is valid */
69 /* die if a symlink is part of the given path's directory */
70 #define PATHSPEC_SYMLINK_LEADING_PATH (1<<3)
71 #define PATHSPEC_PREFIX_ORIGIN (1<<4)
72 #define PATHSPEC_KEEP_ORDER (1<<5)
73 /*
74 * For the callers that just need pure paths from somewhere else, not
75 * from command line. Global --*-pathspecs options are ignored. No
76 * magic is parsed in each pathspec either. If PATHSPEC_LITERAL is
77 * allowed, then it will automatically set for every pathspec.
78 */
79 #define PATHSPEC_LITERAL_PATH (1<<6)
80
81 /**
82 * Given command line arguments and a prefix, convert the input to
83 * pathspec. die() if any magic in magic_mask is used.
84 *
85 * Any arguments used are copied. It is safe for the caller to modify
86 * or free 'prefix' and 'args' after calling this function.
87 *
88 * - magic_mask specifies what features that are NOT supported by the following
89 * code. If a user attempts to use such a feature, parse_pathspec() can reject
90 * it early.
91 *
92 * - flags specifies other things that the caller wants parse_pathspec to
93 * perform.
94 *
95 * - prefix and args come from cmd_* functions
96 *
97 * parse_pathspec() helps catch unsupported features and reject them politely.
98 * At a lower level, different pathspec-related functions may not support the
99 * same set of features. Such pathspec-sensitive functions are guarded with
100 * GUARD_PATHSPEC(), which will die in an unfriendly way when an unsupported
101 * feature is requested.
102 *
103 * The command designers are supposed to make sure that GUARD_PATHSPEC() never
104 * dies. They have to make sure all unsupported features are caught by
105 * parse_pathspec(), not by GUARD_PATHSPEC. grepping GUARD_PATHSPEC() should
106 * give the designers all pathspec-sensitive codepaths and what features they
107 * support.
108 *
109 * A similar process is applied when a new pathspec magic is added. The designer
110 * lifts the GUARD_PATHSPEC restriction in the functions that support the new
111 * magic. At the same time (s)he has to make sure this new feature will be
112 * caught at parse_pathspec() in commands that cannot handle the new magic in
113 * some cases. grepping parse_pathspec() should help.
114 */
115 void parse_pathspec(struct pathspec *pathspec,
116 unsigned magic_mask,
117 unsigned flags,
118 const char *prefix,
119 const char **args);
120 /*
121 * Same as parse_pathspec() but uses file as input.
122 * When 'file' is exactly "-" it uses 'stdin' instead.
123 */
124 void parse_pathspec_file(struct pathspec *pathspec,
125 unsigned magic_mask,
126 unsigned flags,
127 const char *prefix,
128 const char *file,
129 int nul_term_line);
130
131 void copy_pathspec(struct pathspec *dst, const struct pathspec *src);
132 void clear_pathspec(struct pathspec *);
133
ps_strncmp(const struct pathspec_item * item,const char * s1,const char * s2,size_t n)134 static inline int ps_strncmp(const struct pathspec_item *item,
135 const char *s1, const char *s2, size_t n)
136 {
137 if (item->magic & PATHSPEC_ICASE)
138 return strncasecmp(s1, s2, n);
139 else
140 return strncmp(s1, s2, n);
141 }
142
ps_strcmp(const struct pathspec_item * item,const char * s1,const char * s2)143 static inline int ps_strcmp(const struct pathspec_item *item,
144 const char *s1, const char *s2)
145 {
146 if (item->magic & PATHSPEC_ICASE)
147 return strcasecmp(s1, s2);
148 else
149 return strcmp(s1, s2);
150 }
151
152 void add_pathspec_matches_against_index(const struct pathspec *pathspec,
153 const struct index_state *istate,
154 char *seen);
155 char *find_pathspecs_matching_against_index(const struct pathspec *pathspec,
156 const struct index_state *istate);
157 int match_pathspec_attrs(const struct index_state *istate,
158 const char *name, int namelen,
159 const struct pathspec_item *item);
160
161 #endif /* PATHSPEC_H */
162