| 1 | /* Return the basename of a pathname. |
| 2 | This file is in the public domain. */ |
| 3 | |
| 4 | /* |
| 5 | NAME |
| 6 | basename -- return pointer to last component of a pathname |
| 7 | |
| 8 | SYNOPSIS |
| 9 | char *basename (const char *name) |
| 10 | |
| 11 | DESCRIPTION |
| 12 | Given a pointer to a string containing a typical pathname |
| 13 | (/usr/src/cmd/ls/ls.c for example), returns a pointer to the |
| 14 | last component of the pathname ("ls.c" in this case). |
| 15 | |
| 16 | BUGS |
| 17 | Presumes a UNIX or DOS/Windows style path with UNIX or DOS/Windows |
| 18 | style separators. |
| 19 | */ |
| 20 | |
| 21 | #include "ansidecl.h" |
| 22 | #include "libiberty.h" |
| 23 | #include "safe-ctype.h" |
| 24 | |
| 25 | #ifndef DIR_SEPARATOR |
| 26 | #define DIR_SEPARATOR '/' |
| 27 | #endif |
| 28 | |
| 29 | #if defined (_WIN32) || defined (__MSDOS__) || defined (__DJGPP__) || \ |
| 30 | defined (__OS2__) |
| 31 | #define HAVE_DOS_BASED_FILE_SYSTEM |
| 32 | #ifndef DIR_SEPARATOR_2 |
| 33 | #define DIR_SEPARATOR_2 '\\' |
| 34 | #endif |
| 35 | #endif |
| 36 | |
| 37 | /* Define IS_DIR_SEPARATOR. */ |
| 38 | #ifndef DIR_SEPARATOR_2 |
| 39 | # define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR) |
| 40 | #else /* DIR_SEPARATOR_2 */ |
| 41 | # define IS_DIR_SEPARATOR(ch) \ |
| 42 | (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2)) |
| 43 | #endif /* DIR_SEPARATOR_2 */ |
| 44 | |
| 45 | char * |
| 46 | basename (name) |
| 47 | const char *name; |
| 48 | { |
| 49 | const char *base; |
| 50 | |
| 51 | #if defined (HAVE_DOS_BASED_FILE_SYSTEM) |
| 52 | /* Skip over the disk name in MSDOS pathnames. */ |
| 53 | if (ISALPHA (name[0]) && name[1] == ':') |
| 54 | name += 2; |
| 55 | #endif |
| 56 | |
| 57 | for (base = name; *name; name++) |
| 58 | { |
| 59 | if (IS_DIR_SEPARATOR (*name)) |
| 60 | { |
| 61 | base = name + 1; |
| 62 | } |
| 63 | } |
| 64 | return (char *) base; |
| 65 | } |
| 66 | |