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 struct test_data {
  43         const char *from;  /* input:  transform from this ... */
  44         const char *to;    /* output: ... to this.            */
  45         const char *alternative; /* output: ... or this.      */
  46 };
  47
  48 static int test_function(struct test_data *data, char *(*func)(char *input),
  49         const char *funcname)
  50 {
  51         int failed = 0, i;
  52         char buffer[1024];
  53         char *to;
  54
  55         for (i = 0; data[i].to; i++) {
  56                 if (!data[i].from)
  57                         to = func(NULL);
  58                 else {
  59                         strcpy(buffer, data[i].from);
  60                         to = func(buffer);
  61                 }
  62                 if (!strcmp(to, data[i].to))
  63                         continue;
  64                 if (!data[i].alternative)
  65                         error("FAIL: %s(%s) => '%s' != '%s'\n",
  66                                 funcname, data[i].from, to, data[i].to);
  67                 else if (!strcmp(to, data[i].alternative))
  68                         continue;
  69                 else
  70                         error("FAIL: %s(%s) => '%s' != '%s', '%s'\n",
  71                                 funcname, data[i].from, to, data[i].to,
  72                                 data[i].alternative);
  73                 failed = 1;
  74         }
  75         return failed;
  76 }
  77
  78 static struct test_data basename_data[] = {
  79         /* --- POSIX type paths --- */
  80         { NULL,              "."    },
  81         { "",                "."    },
  82         { ".",               "."    },
  83         { "..",              ".."   },
  84         { "/",               "/"    },
  85         { "//",              "/", "//" },
  86         { "///",             "/", "//" },
  87         { "////",            "/", "//" },
  88         { "usr",             "usr"  },
  89         { "/usr",            "usr"  },
  90         { "/usr/",           "usr"  },
  91         { "/usr//",          "usr"  },
  92         { "/usr/lib",        "lib"  },
  93         { "usr/lib",         "lib"  },
  94         { "usr/lib///",      "lib"  },
  95
  96 #if defined(__MINGW32__) || defined(_MSC_VER)
  97         /* --- win32 type paths --- */
  98         { "\\usr",           "usr"  },
  99         { "\\usr\\",         "usr"  },
 100         { "\\usr\\\\",       "usr"  },
 101         { "\\usr\\lib",      "lib"  },
 102         { "usr\\lib",        "lib"  },
 103         { "usr\\lib\\\\\\",  "lib"  },
 104         { "C:/usr",          "usr"  },
 105         { "C:/usr",          "usr"  },
 106         { "C:/usr/",         "usr"  },
 107         { "C:/usr//",        "usr"  },
 108         { "C:/usr/lib",      "lib"  },
 109         { "C:usr/lib",       "lib"  },
 110         { "C:usr/lib///",    "lib"  },
 111         { "C:",              "."    },
 112         { "C:a",             "a"    },
 113         { "C:/",             "/"    },
 114         { "C:///",           "/"    },
 115         { "\\",              "\\", "/" },
 116         { "\\\\",            "\\", "/" },
 117         { "\\\\\\",          "\\", "/" },
 118 #endif
 119         { NULL,              NULL   }
 120 };
 121
 122 static struct test_data dirname_data[] = {
 123         /* --- POSIX type paths --- */
 124         { NULL,              "."      },
 125         { "",                "."      },
 126         { ".",               "."      },
 127         { "..",              "."      },
 128         { "/",               "/"      },
 129         { "//",              "/", "//" },
 130         { "///",             "/", "//" },
 131         { "////",            "/", "//" },
 132         { "usr",             "."      },
 133         { "/usr",            "/"      },
 134         { "/usr/",           "/"      },
 135         { "/usr//",          "/"      },
 136         { "/usr/lib",        "/usr"   },
 137         { "usr/lib",         "usr"    },
 138         { "usr/lib///",      "usr"    },
 139
 140 #if defined(__MINGW32__) || defined(_MSC_VER)
 141         /* --- win32 type paths --- */
 142         { "\\",              "\\"     },
 143         { "\\\\",            "\\\\"   },
 144         { "\\usr",           "\\"     },
 145         { "\\usr\\",         "\\"     },
 146         { "\\usr\\\\",       "\\"     },
 147         { "\\usr\\lib",      "\\usr"  },
 148         { "usr\\lib",        "usr"    },
 149         { "usr\\lib\\\\\\",  "usr"    },
 150         { "C:a",             "C:."    },
 151         { "C:/",             "C:/"    },
 152         { "C:///",           "C:/"    },
 153         { "C:/usr",          "C:/"    },
 154         { "C:/usr/",         "C:/"    },
 155         { "C:/usr//",        "C:/"    },
 156         { "C:/usr/lib",      "C:/usr" },
 157         { "C:usr/lib",       "C:usr"  },
 158         { "C:usr/lib///",    "C:usr"  },
 159         { "\\\\\\",          "\\"     },
 160         { "\\\\\\\\",        "\\"     },
 161         { "C:",              "C:.", "." },
 162 #endif
 163         { NULL,              NULL     }
 164 };
 165
 166 int main(int argc, char **argv)
 167 {
 168         if (argc == 3 && !strcmp(argv[1], "normalize_path_copy")) {
 169                 char *buf = xmalloc(PATH_MAX + 1);
 170                 int rv = normalize_path_copy(buf, argv[2]);
 171                 if (rv)
 172                         buf = "++failed++";
 173                 puts(buf);
 174                 return 0;
 175         }
 176
 177         if (argc >= 2 && !strcmp(argv[1], "real_path")) {
 178                 while (argc > 2) {
 179                         puts(real_path(argv[2]));
 180                         argc--;
 181                         argv++;
 182                 }
 183                 return 0;
 184         }
 185
 186         if (argc >= 2 && !strcmp(argv[1], "absolute_path")) {
 187                 while (argc > 2) {
 188                         puts(absolute_path(argv[2]));
 189                         argc--;
 190                         argv++;
 191                 }
 192                 return 0;
 193         }
 194
 195         if (argc == 4 && !strcmp(argv[1], "longest_ancestor_length")) {
 196                 int len;
 197                 struct string_list ceiling_dirs = STRING_LIST_INIT_DUP;
 198                 char *path = xstrdup(argv[2]);
 199
 200                 /*
 201                  * We have to normalize the arguments because under
 202                  * Windows, bash mangles arguments that look like
 203                  * absolute POSIX paths or colon-separate lists of
 204                  * absolute POSIX paths into DOS paths (e.g.,
 205                  * "/foo:/foo/bar" might be converted to
 206                  * "D:\Src\msysgit\foo;D:\Src\msysgit\foo\bar"),
 207                  * whereas longest_ancestor_length() requires paths
 208                  * that use forward slashes.
 209                  */
 210                 if (normalize_path_copy(path, path))
 211                         die("Path \"%s\" could not be normalized", argv[2]);
 212                 string_list_split(&ceiling_dirs, argv[3], PATH_SEP, -1);
 213                 filter_string_list(&ceiling_dirs, 0,
 214                                    normalize_ceiling_entry, NULL);
 215                 len = longest_ancestor_length(path, &ceiling_dirs);
 216                 string_list_clear(&ceiling_dirs, 0);
 217                 free(path);
 218                 printf("%d\n", len);
 219                 return 0;
 220         }
 221
 222         if (argc >= 4 && !strcmp(argv[1], "prefix_path")) {
 223                 char *prefix = argv[2];
 224                 int prefix_len = strlen(prefix);
 225                 int nongit_ok;
 226                 setup_git_directory_gently(&nongit_ok);
 227                 while (argc > 3) {
 228                         puts(prefix_path(prefix, prefix_len, argv[3]));
 229                         argc--;
 230                         argv++;
 231                 }
 232                 return 0;
 233         }
 234
 235         if (argc == 4 && !strcmp(argv[1], "strip_path_suffix")) {
 236                 char *prefix = strip_path_suffix(argv[2], argv[3]);
 237                 printf("%s\n", prefix ? prefix : "(null)");
 238                 return 0;
 239         }
 240
 241         if (argc == 3 && !strcmp(argv[1], "print_path")) {
 242                 puts(argv[2]);
 243                 return 0;
 244         }
 245
 246         if (argc == 4 && !strcmp(argv[1], "relative_path")) {
 247                 struct strbuf sb = STRBUF_INIT;
 248                 const char *in, *prefix, *rel;
 249                 normalize_argv_string(&in, argv[2]);
 250                 normalize_argv_string(&prefix, argv[3]);
 251                 rel = relative_path(in, prefix, &sb);
 252                 if (!rel)
 253                         puts("(null)");
 254                 else
 255                         puts(strlen(rel) > 0 ? rel : "(empty)");
 256                 strbuf_release(&sb);
 257                 return 0;
 258         }
 259
 260         if (argc == 2 && !strcmp(argv[1], "basename"))
 261                 return test_function(basename_data, basename, argv[1]);
 262
 263         if (argc == 2 && !strcmp(argv[1], "dirname"))
 264                 return test_function(dirname_data, dirname, argv[1]);
 265
 266         fprintf(stderr, "%s: unknown function name: %s\n", argv[0],
 267                 argv[1] ? argv[1] : "(there was none)");
 268         return 1;
 269 }