test-path-utils.c

   1 #include "cache.h"
   2 #include "string-list.h"
   3
   4 /*
   5  * A "string_list_each_func_t" function that normalizes an entry from
   6  * GIT_CEILING_DIRECTORIES.  If the path is unusable for some reason,
   7  * die with an explanation.
   8  */
   9 static int normalize_ceiling_entry(struct string_list_item *item, void *unused)
  10 {
  11         const char *ceil = item->string;
  12         int len = strlen(ceil);
  13         char buf[PATH_MAX+1];
  14
  15         if (len == 0)
  16                 die("Empty path is not supported");
  17         if (len > PATH_MAX)
  18                 die("Path \"%s\" is too long", ceil);
  19         if (!is_absolute_path(ceil))
  20                 die("Path \"%s\" is not absolute", ceil);
  21         if (normalize_path_copy(buf, ceil) < 0)
  22                 die("Path \"%s\" could not be normalized", ceil);
  23         len = strlen(buf);
  24         free(item->string);
  25         item->string = xstrdup(buf);
  26         return 1;
  27 }
  28
  29 static void normalize_argv_string(const char **var, const char *input)
  30 {
  31         if (!strcmp(input, "<null>"))
  32                 *var = NULL;
  33         else if (!strcmp(input, "<empty>"))
  34                 *var = "";
  35         else
  36                 *var = input;
  37
  38         if (*var && (**var == '<' || **var == '('))
  39                 die("Bad value: %s\n", input);
  40 }
  41
  42 int main(int argc, char **argv)
  43 {
  44         if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) {
  45                 char *buf = xmalloc(PATH_MAX + 1);
  46                 int rv = normalize_path_copy(buf, argv[2]);
  47                 if (rv)
  48                         buf = "++failed++";
  49                 puts(buf);
  50                 return 0;
  51         }
  52
  53         if (argc >= 2 && !strcmp(argv[1], "real_path")) {
  54                 while (argc > 2) {
  55                         puts(real_path(argv[2]));
  56                         argc--;
  57                         argv++;
  58                 }
  59                 return 0;
  60         }
  61
  62         if (argc >= 2 && !strcmp(argv[1], "absolute_path")) {
  63                 while (argc > 2) {
  64                         puts(absolute_path(argv[2]));
  65                         argc--;
  66                         argv++;
  67                 }
  68                 return 0;
  69         }
  70
  71         if (argc == 4 && !strcmp(argv[1], "longest_ancestor_length")) {
  72                 int len;
  73                 struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
  74                 char *path = xstrdup(argv[2]);
  75
  76                 /*
  77                  * We have to normalize the arguments because under
  78                  * Windows, bash mangles arguments that look like
  79                  * absolute POSIX paths or colon-separate lists of
  80                  * absolute POSIX paths into DOS paths (e.g.,
  81                  * "/foo:/foo/bar" might be converted to
  82                  * "D:\Src\msysgit\foo;D:\Src\msysgit\foo\bar"),
  83                  * whereas longest_ancestor_length() requires paths
  84                  * that use forward slashes.
  85                  */
  86                 if (normalize_path_copy(path, path))
  87                         die("Path \"%s\" could not be normalized", argv[2]);
  88                 string_list_split(&ceiling_dirs, argv[3], PATH_SEP, -1);
  89                 filter_string_list(&ceiling_dirs, 0,
  90                                    normalize_ceiling_entry, NULL);
  91                 len = longest_ancestor_length(path, &ceiling_dirs);
  92                 string_list_clear(&ceiling_dirs, 0);
  93                 free(path);
  94                 printf("%d\n", len);
  95                 return 0;
  96         }
  97
  98         if (argc >= 4 && !strcmp(argv[1], "prefix_path")) {
  99                 char *prefix = argv[2];
 100                 int prefix_len = strlen(prefix);
 101                 int nongit_ok;
 102                 setup_git_directory_gently(&nongit_ok);
 103                 while (argc > 3) {
 104                         puts(prefix_path(prefix, prefix_len, argv[3]));
 105                         argc--;
 106                         argv++;
 107                 }
 108                 return 0;
 109         }
 110
 111         if (argc == 4 && !strcmp(argv[1], "strip_path_suffix")) {
 112                 char *prefix = strip_path_suffix(argv[2], argv[3]);
 113                 printf("%s\n", prefix ? prefix : "(null)");
 114                 return 0;
 115         }
 116
 117         if (argc == 3 && !strcmp(argv[1], "print_path")) {
 118                 puts(argv[2]);
 119                 return 0;
 120         }
 121
 122         if (argc == 4 && !strcmp(argv[1], "relative_path")) {
 123                 struct strbuf sb = STRBUF_INIT;
 124                 const char *in, *prefix, *rel;
 125                 normalize_argv_string(&in, argv[2]);
 126                 normalize_argv_string(&prefix, argv[3]);
 127                 rel = relative_path(in, prefix, &sb);
 128                 if (!rel)
 129                         puts("(null)");
 130                 else
 131                         puts(strlen(rel) > 0 ? rel : "(empty)");
 132                 strbuf_release(&sb);
 133                 return 0;
 134         }
 135
 136         fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
 137                 argv[1] ? argv[1] : "(there was none)");
 138         return 1;
 139 }