| /* makepath.c - glue PATH and DIR together into a full pathname. */ |
| |
| /* Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc. |
| |
| This file is part of GNU Bash, the Bourne Again SHell. |
| |
| Bash is free software; you can redistribute it and/or modify it under |
| the terms of the GNU General Public License as published by the Free |
| Software Foundation; either version 2, or (at your option) any later |
| version. |
| |
| Bash is distributed in the hope that it will be useful, but WITHOUT ANY |
| WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| for more details. |
| |
| You should have received a copy of the GNU General Public License along |
| with Bash; see the file COPYING. If not, write to the Free Software |
| Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
| |
| #include <config.h> |
| |
| #if defined (HAVE_UNISTD_H) |
| # ifdef _MINIX |
| # include <sys/types.h> |
| # endif |
| # include <unistd.h> |
| #endif |
| |
| #include "bashansi.h" |
| #include "shell.h" |
| |
| #include <tilde/tilde.h> |
| |
| #ifndef NULL |
| # define NULL 0 |
| #endif |
| |
| /* MAKE SURE THESE AGREE WITH ../../externs.h. */ |
| |
| #ifndef MP_DOTILDE |
| # define MP_DOTILDE 0x01 |
| # define MP_DOCWD 0x02 |
| # define MP_RMDOT 0x04 |
| #endif |
| |
| extern char *get_working_directory __P((char *)); |
| |
| /* Take PATH, an element from, e.g., $CDPATH, and DIR, a directory name, |
| and paste them together into PATH/DIR. Tilde expansion is performed on |
| PATH if (flags & MP_DOTILDE) is non-zero. If PATH is NULL or the empty |
| string, it is converted to the current directory. A full pathname is |
| used if (flags & MP_DOCWD) is non-zero, otherwise `./' is used. If |
| (flags & MP_RMDOT) is non-zero, any `./' is removed from the beginning |
| of DIR. */ |
| |
| #define MAKEDOT() \ |
| do { \ |
| xpath = xmalloc (2); \ |
| xpath[0] = '.'; \ |
| xpath[1] = '\0'; \ |
| pathlen = 1; \ |
| } while (0) |
| |
| char * |
| sh_makepath (path, dir, flags) |
| char *path, *dir; |
| int flags; |
| { |
| int dirlen, pathlen; |
| char *ret, *xpath, *r, *s; |
| |
| if (path == 0 || *path == '\0') |
| { |
| if (flags & MP_DOCWD) |
| { |
| xpath = get_working_directory ("sh_makepath"); |
| if (xpath == 0) |
| { |
| ret = get_string_value ("PWD"); |
| if (ret) |
| xpath = savestring (ret); |
| } |
| if (xpath == 0) |
| MAKEDOT(); |
| else |
| pathlen = strlen (xpath); |
| } |
| else |
| MAKEDOT(); |
| } |
| else |
| { |
| xpath = ((flags & MP_DOTILDE) && *path == '~') ? bash_tilde_expand (path) : path; |
| pathlen = strlen (xpath); |
| } |
| |
| dirlen = strlen (dir); |
| if ((flags & MP_RMDOT) && dir[0] == '.' && dir[1] == '/') |
| { |
| dir += 2; |
| dirlen -= 2; |
| } |
| |
| r = ret = xmalloc (2 + dirlen + pathlen); |
| s = xpath; |
| while (*s) |
| *r++ = *s++; |
| if (s[-1] != '/') |
| *r++ = '/'; |
| s = dir; |
| while (*r++ = *s++) |
| ; |
| if (xpath != path) |
| free (xpath); |
| return (ret); |
| } |