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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 06:17:24 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 06:17:24 +0000 |
commit | 9d8085074991d5c0a42d6fc96a2d1a3ee918aad1 (patch) | |
tree | c85bca1e6c11eb872edfc64c524d20f2b7e3307b /lib/sh/makepath.c | |
parent | Initial commit. (diff) | |
download | bash-9d8085074991d5c0a42d6fc96a2d1a3ee918aad1.tar.xz bash-9d8085074991d5c0a42d6fc96a2d1a3ee918aad1.zip |
Adding upstream version 5.1.upstream/5.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | lib/sh/makepath.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/lib/sh/makepath.c b/lib/sh/makepath.c new file mode 100644 index 0000000..ab46c96 --- /dev/null +++ b/lib/sh/makepath.c @@ -0,0 +1,128 @@ +/* makepath.c - glue PATH and DIR together into a full pathname. */ + +/* Copyright (C) 1987-2020 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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>. +*/ + +#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 +# define MP_IGNDOT 0x08 +#endif + +extern char *get_working_directory PARAMS((char *)); + +static char *nullpath = ""; + +/* 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. If (flags & MP_IGNDOT) is non-zero, a PATH that is "." or "./" + is ignored. */ + +#define MAKEDOT() \ + do { \ + xpath = (char *)xmalloc (2); \ + xpath[0] = '.'; \ + xpath[1] = '\0'; \ + pathlen = 1; \ + } while (0) + +char * +sh_makepath (path, dir, flags) + const char *path, *dir; + int flags; +{ + int dirlen, pathlen; + char *ret, *xpath, *xdir, *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 if ((flags & MP_IGNDOT) && path[0] == '.' && (path[1] == '\0' || + (path[1] == '/' && path[2] == '\0'))) + { + xpath = nullpath; + pathlen = 0; + } + else + { + xpath = ((flags & MP_DOTILDE) && *path == '~') ? bash_tilde_expand (path, 0) : (char *)path; + pathlen = strlen (xpath); + } + + xdir = (char *)dir; + dirlen = strlen (xdir); + if ((flags & MP_RMDOT) && dir[0] == '.' && dir[1] == '/') + { + xdir += 2; + dirlen -= 2; + } + + r = ret = (char *)xmalloc (2 + dirlen + pathlen); + s = xpath; + while (*s) + *r++ = *s++; + if (s > xpath && s[-1] != '/') + *r++ = '/'; + s = xdir; + while (*r++ = *s++) + ; + if (xpath != path && xpath != nullpath) + free (xpath); + return (ret); +} |