t/helper/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         char *ceil = item->string;
  12
  13         if (!*ceil)
  14                 die("Empty path is not supported");
  15         if (!is_absolute_path(ceil))
  16                 die("Path \"%s\" is not absolute", ceil);
  17         if (normalize_path_copy(ceil, ceil) < 0)
  18                 die("Path \"%s\" could not be normalized", ceil);
  19         return 1;
  20 }
  21
  22 static void normalize_argv_string(const char **var, const char *input)
  23 {
  24         if (!strcmp(input, "<null>"))
  25                 *var = NULL;
  26         else if (!strcmp(input, "<empty>"))
  27                 *var = "";
  28         else
  29                 *var = input;
  30
  31         if (*var && (**var == '<' || **var == '('))
  32                 die("Bad value: %s\n", input);
  33 }
  34
  35 struct test_data {
  36         const char *from;  /* input:  transform from this ... */
  37         const char *to;    /* output: ... to this.            */
  38         const char *alternative; /* output: ... or this.      */
  39 };
  40
  41 static int test_function(struct test_data *data, char *(*func)(char *input),
  42         const char *funcname)
  43 {
  44         int failed = 0, i;
  45         char buffer[1024];
  46         char *to;
  47
  48         for (i = 0; data[i].to; i++) {
  49                 if (!data[i].from)
  50                         to = func(NULL);
  51                 else {
  52                         xsnprintf(buffer, sizeof(buffer), "%s", data[i].from);
  53                         to = func(buffer);
  54                 }
  55                 if (!strcmp(to, data[i].to))
  56                         continue;
  57                 if (!data[i].alternative)
  58                         error("FAIL: %s(%s) => '%s' != '%s'\n",
  59                                 funcname, data[i].from, to, data[i].to);
  60                 else if (!strcmp(to, data[i].alternative))
  61                         continue;
  62                 else
  63                         error("FAIL: %s(%s) => '%s' != '%s', '%s'\n",
  64                                 funcname, data[i].from, to, data[i].to,
  65                                 data[i].alternative);
  66                 failed = 1;
  67         }
  68         return failed;
  69 }
  70
  71 static struct test_data basename_data[] = {
  72         /* --- POSIX type paths --- */
  73         { NULL,              "."    },
  74         { "",                "."    },
  75         { ".",               "."    },
  76         { "..",              ".."   },
  77         { "/",               "/"    },
  78         { "//",              "/", "//" },
  79         { "///",             "/", "//" },
  80         { "////",            "/", "//" },
  81         { "usr",             "usr"  },
  82         { "/usr",            "usr"  },
  83         { "/usr/",           "usr"  },
  84         { "/usr//",          "usr"  },
  85         { "/usr/lib",        "lib"  },
  86         { "usr/lib",         "lib"  },
  87         { "usr/lib///",      "lib"  },
  88
  89 #if defined(__MINGW32__) || defined(_MSC_VER)
  90         /* --- win32 type paths --- */
  91         { "\\usr",           "usr"  },
  92         { "\\usr\\",         "usr"  },
  93         { "\\usr\\\\",       "usr"  },
  94         { "\\usr\\lib",      "lib"  },
  95         { "usr\\lib",        "lib"  },
  96         { "usr\\lib\\\\\\",  "lib"  },
  97         { "C:/usr",          "usr"  },
  98         { "C:/usr",          "usr"  },
  99         { "C:/usr/",         "usr"  },
 100         { "C:/usr//",        "usr"  },
 101         { "C:/usr/lib",      "lib"  },
 102         { "C:usr/lib",       "lib"  },
 103         { "C:usr/lib///",    "lib"  },
 104         { "C:",              "."    },
 105         { "C:a",             "a"    },
 106         { "C:/",             "/"    },
 107         { "C:///",           "/"    },
 108         { "\\",              "\\", "/" },
 109         { "\\\\",            "\\", "/" },
 110         { "\\\\\\",          "\\", "/" },
 111 #endif
 112         { NULL,              NULL   }
 113 };
 114
 115 static struct test_data dirname_data[] = {
 116         /* --- POSIX type paths --- */
 117         { NULL,              "."      },
 118         { "",                "."      },
 119         { ".",               "."      },
 120         { "..",              "."      },
 121         { "/",               "/"      },
 122         { "//",              "/", "//" },
 123         { "///",             "/", "//" },
 124         { "////",            "/", "//" },
 125         { "usr",             "."      },
 126         { "/usr",            "/"      },
 127         { "/usr/",           "/"      },
 128         { "/usr//",          "/"      },
 129         { "/usr/lib",        "/usr"   },
 130         { "usr/lib",         "usr"    },
 131         { "usr/lib///",      "usr"    },
 132
 133 #if defined(__MINGW32__) || defined(_MSC_VER)
 134         /* --- win32 type paths --- */
 135         { "\\",              "\\"     },
 136         { "\\\\",            "\\\\"   },
 137         { "\\usr",           "\\"     },
 138         { "\\usr\\",         "\\"     },
 139         { "\\usr\\\\",       "\\"     },
 140         { "\\usr\\lib",      "\\usr"  },
 141         { "usr\\lib",        "usr"    },
 142         { "usr\\lib\\\\\\",  "usr"    },
 143         { "C:a",             "C:."    },
 144         { "C:/",             "C:/"    },
 145         { "C:///",           "C:/"    },
 146         { "C:/usr",          "C:/"    },
 147         { "C:/usr/",         "C:/"    },
 148         { "C:/usr//",        "C:/"    },
 149         { "C:/usr/lib",      "C:/usr" },
 150         { "C:usr/lib",       "C:usr"  },
 151         { "C:usr/lib///",    "C:usr"  },
 152         { "\\\\\\",          "\\"     },
 153         { "\\\\\\\\",        "\\"     },
 154         { "C:",              "C:.", "." },
 155 #endif
 156         { NULL,              NULL     }
 157 };
 158
 159 int cmd_main(int argc, const char **argv)
 160 {
 161         if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) {
 162                 char *buf = xmallocz(strlen(argv[2]));
 163                 int rv = normalize_path_copy(buf, argv[2]);
 164                 if (rv)
 165                         buf = "++failed++";
 166                 puts(buf);
 167                 return 0;
 168         }
 169
 170         if (argc >= 2 && !strcmp(argv[1], "real_path")) {
 171                 while (argc > 2) {
 172                         puts(real_path(argv[2]));
 173                         argc--;
 174                         argv++;
 175                 }
 176                 return 0;
 177         }
 178
 179         if (argc >= 2 && !strcmp(argv[1], "absolute_path")) {
 180                 while (argc > 2) {
 181                         puts(absolute_path(argv[2]));
 182                         argc--;
 183                         argv++;
 184                 }
 185                 return 0;
 186         }
 187
 188         if (argc == 4 && !strcmp(argv[1], "longest_ancestor_length")) {
 189                 int len;
 190                 struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
 191                 char *path = xstrdup(argv[2]);
 192
 193                 /*
 194                  * We have to normalize the arguments because under
 195                  * Windows, bash mangles arguments that look like
 196                  * absolute POSIX paths or colon-separate lists of
 197                  * absolute POSIX paths into DOS paths (e.g.,
 198                  * "/foo:/foo/bar" might be converted to
 199                  * "D:\Src\msysgit\foo;D:\Src\msysgit\foo\bar"),
 200                  * whereas longest_ancestor_length() requires paths
 201                  * that use forward slashes.
 202                  */
 203                 if (normalize_path_copy(path, path))
 204                         die("Path \"%s\" could not be normalized", argv[2]);
 205                 string_list_split(&ceiling_dirs, argv[3], PATH_SEP, -1);
 206                 filter_string_list(&ceiling_dirs, 0,
 207                                    normalize_ceiling_entry, NULL);
 208                 len = longest_ancestor_length(path, &ceiling_dirs);
 209                 string_list_clear(&ceiling_dirs, 0);
 210                 free(path);
 211                 printf("%d\n", len);
 212                 return 0;
 213         }
 214
 215         if (argc >= 4 && !strcmp(argv[1], "prefix_path")) {
 216                 const char *prefix = argv[2];
 217                 int prefix_len = strlen(prefix);
 218                 int nongit_ok;
 219                 setup_git_directory_gently(&nongit_ok);
 220                 while (argc > 3) {
 221                         puts(prefix_path(prefix, prefix_len, argv[3]));
 222                         argc--;
 223                         argv++;
 224                 }
 225                 return 0;
 226         }
 227
 228         if (argc == 4 && !strcmp(argv[1], "strip_path_suffix")) {
 229                 char *prefix = strip_path_suffix(argv[2], argv[3]);
 230                 printf("%s\n", prefix ? prefix : "(null)");
 231                 return 0;
 232         }
 233
 234         if (argc == 3 && !strcmp(argv[1], "print_path")) {
 235                 puts(argv[2]);
 236                 return 0;
 237         }
 238
 239         if (argc == 4 && !strcmp(argv[1], "relative_path")) {
 240                 struct strbuf sb = STRBUF_INIT;
 241                 const char *in, *prefix, *rel;
 242                 normalize_argv_string(&in, argv[2]);
 243                 normalize_argv_string(&prefix, argv[3]);
 244                 rel = relative_path(in, prefix, &sb);
 245                 if (!rel)
 246                         puts("(null)");
 247                 else
 248                         puts(strlen(rel) > 0 ? rel : "(empty)");
 249                 strbuf_release(&sb);
 250                 return 0;
 251         }
 252
 253         if (argc == 2 && !strcmp(argv[1], "basename"))
 254                 return test_function(basename_data, basename, argv[1]);
 255
 256         if (argc == 2 && !strcmp(argv[1], "dirname"))
 257                 return test_function(dirname_data, dirname, argv[1]);
 258
 259         fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
 260                 argv[1] ? argv[1] : "(there was none)");
 261         return 1;
 262 }