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![Ray Donnelly](/assets/img/avatar_default.png)
In normalize_ceiling_entry(), we test that normalized paths end with slash, *unless* the path to be normalized was already the root directory. However, normalize_path_copy() does not even enforce this condition. Even worse: on Windows, the root directory gets translated into a Windows directory by the Bash before being passed to `git.exe` (or `test-path-utils.exe`), which means that we cannot even know whether the path that was passed to us was the root directory to begin with. This issue has already caused endless hours of trying to "fix" the MSYS2 runtime, only to break other things due to MSYS2 ensuring that the converted path maintains the same state as the input path with respect to any final '/'. So let's just forget about this test. It is non-essential to Git's operation, anyway. Acked-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Ray Donnelly <mingw.android@gmail.com>
140 lines
3.4 KiB
C
140 lines
3.4 KiB
C
#include "cache.h"
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#include "string-list.h"
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/*
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* A "string_list_each_func_t" function that normalizes an entry from
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* GIT_CEILING_DIRECTORIES. If the path is unusable for some reason,
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* die with an explanation.
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*/
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static int normalize_ceiling_entry(struct string_list_item *item, void *unused)
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{
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const char *ceil = item->string;
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int len = strlen(ceil);
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char buf[PATH_MAX+1];
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if (len == 0)
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die("Empty path is not supported");
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if (len > PATH_MAX)
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die("Path \"%s\" is too long", ceil);
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if (!is_absolute_path(ceil))
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die("Path \"%s\" is not absolute", ceil);
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if (normalize_path_copy(buf, ceil) < 0)
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die("Path \"%s\" could not be normalized", ceil);
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len = strlen(buf);
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free(item->string);
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item->string = xstrdup(buf);
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return 1;
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}
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static void normalize_argv_string(const char **var, const char *input)
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{
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if (!strcmp(input, "<null>"))
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*var = NULL;
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else if (!strcmp(input, "<empty>"))
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*var = "";
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else
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*var = input;
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if (*var && (**var == '<' || **var == '('))
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die("Bad value: %s\n", input);
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}
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int main(int argc, char **argv)
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{
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if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) {
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char *buf = xmalloc(PATH_MAX + 1);
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int rv = normalize_path_copy(buf, argv[2]);
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if (rv)
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buf = "++failed++";
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puts(buf);
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return 0;
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}
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if (argc >= 2 && !strcmp(argv[1], "real_path")) {
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while (argc > 2) {
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puts(real_path(argv[2]));
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argc--;
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argv++;
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}
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return 0;
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}
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if (argc >= 2 && !strcmp(argv[1], "absolute_path")) {
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while (argc > 2) {
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puts(absolute_path(argv[2]));
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argc--;
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argv++;
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}
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return 0;
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}
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if (argc == 4 && !strcmp(argv[1], "longest_ancestor_length")) {
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int len;
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struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
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char *path = xstrdup(argv[2]);
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/*
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* We have to normalize the arguments because under
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* Windows, bash mangles arguments that look like
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* absolute POSIX paths or colon-separate lists of
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* absolute POSIX paths into DOS paths (e.g.,
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* "/foo:/foo/bar" might be converted to
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* "D:\Src\msysgit\foo;D:\Src\msysgit\foo\bar"),
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* whereas longest_ancestor_length() requires paths
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* that use forward slashes.
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*/
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if (normalize_path_copy(path, path))
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die("Path \"%s\" could not be normalized", argv[2]);
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string_list_split(&ceiling_dirs, argv[3], PATH_SEP, -1);
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filter_string_list(&ceiling_dirs, 0,
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normalize_ceiling_entry, NULL);
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len = longest_ancestor_length(path, &ceiling_dirs);
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string_list_clear(&ceiling_dirs, 0);
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free(path);
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printf("%d\n", len);
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return 0;
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}
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if (argc >= 4 && !strcmp(argv[1], "prefix_path")) {
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char *prefix = argv[2];
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int prefix_len = strlen(prefix);
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int nongit_ok;
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setup_git_directory_gently(&nongit_ok);
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while (argc > 3) {
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puts(prefix_path(prefix, prefix_len, argv[3]));
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argc--;
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argv++;
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}
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return 0;
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}
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if (argc == 4 && !strcmp(argv[1], "strip_path_suffix")) {
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char *prefix = strip_path_suffix(argv[2], argv[3]);
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printf("%s\n", prefix ? prefix : "(null)");
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return 0;
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}
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if (argc == 3 && !strcmp(argv[1], "print_path")) {
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puts(argv[2]);
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return 0;
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}
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if (argc == 4 && !strcmp(argv[1], "relative_path")) {
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struct strbuf sb = STRBUF_INIT;
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const char *in, *prefix, *rel;
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normalize_argv_string(&in, argv[2]);
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normalize_argv_string(&prefix, argv[3]);
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rel = relative_path(in, prefix, &sb);
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if (!rel)
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puts("(null)");
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else
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puts(strlen(rel) > 0 ? rel : "(empty)");
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strbuf_release(&sb);
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return 0;
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}
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fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
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argv[1] ? argv[1] : "(there was none)");
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return 1;
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}
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