da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/***********************************************************************
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* This software is part of the ast package *
3e14f97f673e8a630f076077de35afdd43dc1587Roger A. Faulkner* Copyright (c) 1992-2010 AT&T Intellectual Property *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* and is licensed under the *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Common Public License, Version 1.0 *
7c2fbfb345896881c631598ee3852ce9ce33fb07April Chin* by AT&T Intellectual Property *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* A copy of the License is available at *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* http://www.opensource.org/licenses/cpl1.0.txt *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Information and Software Systems Research *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* AT&T Research *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Florham Park NJ *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* Glenn Fowler <gsf@research.att.com> *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* David Korn <dgk@research.att.com> *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin* *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin***********************************************************************/
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#pragma prototyped
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin/*
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * David Korn
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * AT&T Bell Laboratories
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * dirname path [suffix]
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin *
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin * print the dirname of a pathname
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinstatic const char usage[] =
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz"[-?\n@(#)$Id: dirname (AT&T Research) 2009-01-31 $\n]"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinUSAGE_LICENSE
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin"[+NAME?dirname - return directory portion of file name]"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin"[+DESCRIPTION?\bdirname\b treats \astring\a as a file name and returns "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "the name of the directory containing the file name by deleting "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "the last component from \astring\a.]"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin"[+?If \astring\a consists solely of \b/\b characters the output will "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "be a single \b/\b unless \bPATH_LEADING_SLASHES\b returned by "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "\bgetconf\b(1) is \b1\b and \astring\a consists of multiple "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "\b/\b characters in which case \b//\b will be output. "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "Otherwise, trailing \b/\b characters are removed, and if "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "there are no remaining \b/\b characters in \astring\a, "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "the string \b.\b will be written to standard output. "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "Otherwise, all characters following the last \b/\b are removed. "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "If the remaining string consists solely of \b/\b characters, "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "the output will be as if the original string had consisted solely "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "as \b/\b characters as described above. Otherwise, all "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "trailing slashes are removed and the output will be this string "
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "unless this string is empty. If empty the output will be \b.\b.]"
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz"[f:file?Print the \b$PATH\b relative regular file path for \astring\a.]"
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz"[r:relative?Print the \b$PATH\b relative readable file path for \astring\a.]"
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz"[x:executable?Print the \b$PATH\b relative executable file path for \astring\a.]"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin"\n"
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz"\nstring\n"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin"\n"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin"[+EXIT STATUS?]{"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "[+0?Successful Completion.]"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin "[+>0?An error occurred.]"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin"}"
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz"[+SEE ALSO?\bbasename\b(1), \bgetconf\b(1), \bdirname\b(3), \bpathname\b(3)]"
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin#include <cmd.h>
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinstatic void l_dirname(register Sfio_t *outfile, register const char *pathname)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin register const char *last;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* go to end of path */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin for(last=pathname; *last; last++);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* back over trailing '/' */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin while(last>pathname && *--last=='/');
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* back over non-slash chars */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin for(;last>pathname && *last!='/';last--);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if(last==pathname)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* all '/' or "" */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if(*pathname!='/')
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin last = pathname = ".";
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin else
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* back over trailing '/' */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin for(;*last=='/' && last > pathname; last--);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin /* preserve // */
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if(last!=pathname && pathname[0]=='/' && pathname[1]=='/')
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin {
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin while(pathname[2]=='/' && pathname<last)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin pathname++;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if(last!=pathname && pathname[0]=='/' && pathname[1]=='/' && *astconf("PATH_LEADING_SLASHES",NiL,NiL)!='1')
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin pathname++;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin sfwrite(outfile,pathname,last+1-pathname);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin sfputc(outfile,'\n');
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinint
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chinb_dirname(int argc,register char *argv[], void* context)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin{
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin register int n;
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz int mode = 0;
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz char buf[PATH_MAX];
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin cmdinit(argc, argv, context, ERROR_CATALOG, 0);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin while (n = optget(argv, usage)) switch (n)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin {
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz case 'f':
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz mode |= PATH_REGULAR;
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz break;
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz case 'r':
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz mode &= ~PATH_REGULAR;
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz mode |= PATH_READ;
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz break;
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz case 'x':
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz mode |= PATH_EXECUTE;
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz break;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin case ':':
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin error(2, "%s", opt_info.arg);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin break;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin case '?':
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin error(ERROR_usage(2), "%s", opt_info.arg);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin break;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin }
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin argv += opt_info.index;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin argc -= opt_info.index;
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin if(error_info.errors || argc != 1)
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin error(ERROR_usage(2),"%s", optusage(NiL));
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz if(!mode)
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz l_dirname(sfstdout,argv[0]);
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz else if(pathpath(buf, argv[0], "", mode))
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz sfputr(sfstdout, buf, '\n');
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz else
34f9b3eef6fdadbda0a846aa4d68691ac40eace5Roland Mainz error(1|ERROR_WARNING, "%s: relative path not found", argv[0]);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin return(0);
da2e3ebdc1edfbc5028edf1354e7dd2fa69a7968chin}