compat/basename.c

   1 #include "../git-compat-util.h"
   2 #include "../strbuf.h"
   3
   4 /* Adapted from libiberty's basename.c.  */
   5 char *gitbasename (char *path)
   6 {
   7         const char *base;
   8
   9         if (path)
  10                 skip_dos_drive_prefix(&path);
  11
  12         if (!path || !*path)
  13                 return ".";
  14
  15         for (base = path; *path; path++) {
  16                 if (!is_dir_sep(*path))
  17                         continue;
  18                 do {
  19                         path++;
  20                 } while (is_dir_sep(*path));
  21                 if (*path)
  22                         base = path;
  23                 else
  24                         while (--path != base && is_dir_sep(*path))
  25                                 *path = '\0';
  26         }
  27         return (char *)base;
  28 }
  29
  30 char *gitdirname(char *path)
  31 {
  32         static struct strbuf buf = STRBUF_INIT;
  33         char *p = path, *slash = NULL, c;
  34         int dos_drive_prefix;
  35
  36         if (!p)
  37                 return ".";
  38
  39         if ((dos_drive_prefix = skip_dos_drive_prefix(&p)) && !*p)
  40                 goto dot;
  41
  42         /*
  43          * POSIX.1-2001 says dirname("/") should return "/", and dirname("//")
  44          * should return "//", but dirname("///") should return "/" again.
  45          */
  46         if (is_dir_sep(*p)) {
  47                 if (!p[1] || (is_dir_sep(p[1]) && !p[2]))
  48                         return path;
  49                 slash = ++p;
  50         }
  51         while ((c = *(p++)))
  52                 if (is_dir_sep(c)) {
  53                         char *tentative = p - 1;
  54
  55                         /* POSIX.1-2001 says to ignore trailing slashes */
  56                         while (is_dir_sep(*p))
  57                                 p++;
  58                         if (*p)
  59                                 slash = tentative;
  60                 }
  61
  62         if (slash) {
  63                 *slash = '\0';
  64                 return path;
  65         }
  66
  67 dot:
  68         strbuf_reset(&buf);
  69         strbuf_addf(&buf, "%.*s.", dos_drive_prefix, path);
  70         return buf.buf;
  71 }