clean: remove unused variable "seen"
[git/git.git] / pathspec.c
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1#include "cache.h"
2#include "dir.h"
3#include "pathspec.h"
4
5/*
6 * Finds which of the given pathspecs match items in the index.
7 *
8 * For each pathspec, sets the corresponding entry in the seen[] array
9 * (which should be specs items long, i.e. the same size as pathspec)
10 * to the nature of the "closest" (i.e. most specific) match found for
11 * that pathspec in the index, if it was a closer type of match than
12 * the existing entry. As an optimization, matching is skipped
13 * altogether if seen[] already only contains non-zero entries.
14 *
15 * If seen[] has not already been written to, it may make sense
4b78d7bc 16 * to use find_pathspecs_matching_against_index() instead.
6f525e71 17 */
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18void add_pathspec_matches_against_index(const char **pathspec,
19 char *seen, int specs)
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20{
21 int num_unmatched = 0, i;
22
23 /*
24 * Since we are walking the index as if we were walking the directory,
25 * we have to mark the matched pathspec as seen; otherwise we will
26 * mistakenly think that the user gave a pathspec that did not match
27 * anything.
28 */
29 for (i = 0; i < specs; i++)
30 if (!seen[i])
31 num_unmatched++;
32 if (!num_unmatched)
33 return;
34 for (i = 0; i < active_nr; i++) {
35 struct cache_entry *ce = active_cache[i];
36 match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen);
37 }
38}
39
40/*
41 * Finds which of the given pathspecs match items in the index.
42 *
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43 * This is a one-shot wrapper around add_pathspec_matches_against_index()
44 * which allocates, populates, and returns a seen[] array indicating the
45 * nature of the "closest" (i.e. most specific) matches which each of the
46 * given pathspecs achieves against all items in the index.
6f525e71 47 */
4b78d7bc 48char *find_pathspecs_matching_against_index(const char **pathspec)
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49{
50 char *seen;
51 int i;
52
53 for (i = 0; pathspec[i]; i++)
54 ; /* just counting */
55 seen = xcalloc(i, 1);
4b78d7bc 56 add_pathspec_matches_against_index(pathspec, seen, i);
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57 return seen;
58}
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59
60/*
61 * Check the index to see whether path refers to a submodule, or
62 * something inside a submodule. If the former, returns the path with
63 * any trailing slash stripped. If the latter, dies with an error
64 * message.
65 */
66const char *check_path_for_gitlink(const char *path)
67{
68 int i, path_len = strlen(path);
69 for (i = 0; i < active_nr; i++) {
70 struct cache_entry *ce = active_cache[i];
71 if (S_ISGITLINK(ce->ce_mode)) {
72 int ce_len = ce_namelen(ce);
73 if (path_len <= ce_len || path[ce_len] != '/' ||
74 memcmp(ce->name, path, ce_len))
75 /* path does not refer to this
76 * submodule or anything inside it */
77 continue;
78 if (path_len == ce_len + 1) {
79 /* path refers to submodule;
80 * strip trailing slash */
81 return xstrndup(ce->name, ce_len);
82 } else {
83 die (_("Path '%s' is in submodule '%.*s'"),
84 path, ce_len, ce->name);
85 }
86 }
87 }
88 return path;
89}
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90
91/*
92 * Dies if the given path refers to a file inside a symlinked
93 * directory in the index.
94 */
95void die_if_path_beyond_symlink(const char *path, const char *prefix)
96{
97 if (has_symlink_leading_path(path, strlen(path))) {
98 int len = prefix ? strlen(prefix) : 0;
99 die(_("'%s' is beyond a symbolic link"), path + len);
100 }
101}