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a5f0fb151d
distributed under your choice of the GPL or a BSD style license. Reviewed by: peter Obtained from: http://home.flash.net/~marknu/less/
1012 lines
18 KiB
C
1012 lines
18 KiB
C
/*
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* Copyright (C) 1984-2000 Mark Nudelman
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*
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* You may distribute under the terms of either the GNU General Public
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* License or the Less License, as specified in the README file.
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*
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* For more information about less, or for information on how to
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* contact the author, see the README file.
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*/
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/*
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* Routines to mess around with filenames (and files).
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* Much of this is very OS dependent.
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*/
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#include "less.h"
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#include "lglob.h"
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#if MSDOS_COMPILER
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#include <dos.h>
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#if MSDOS_COMPILER==WIN32C && !defined(_MSC_VER)
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#include <dir.h>
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#endif
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#if MSDOS_COMPILER==DJGPPC
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#include <glob.h>
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#include <dir.h>
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#include <limits.h>
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#define _MAX_PATH PATH_MAX
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#endif
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#endif
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#ifdef _OSK
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#include <rbf.h>
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#ifndef _OSK_MWC32
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#include <modes.h>
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#endif
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#endif
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#if HAVE_STAT
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#include <sys/stat.h>
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#ifndef S_ISDIR
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#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
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#endif
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#ifndef S_ISREG
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#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
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#endif
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#endif
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extern int force_open;
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extern int secure;
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extern IFILE curr_ifile;
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extern IFILE old_ifile;
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#if SPACES_IN_FILENAMES
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extern char openquote;
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extern char closequote;
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#endif
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/*
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* Remove quotes around a filename.
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*/
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public char *
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unquote_file(str)
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char *str;
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{
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#if SPACES_IN_FILENAMES
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char *name;
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char *p;
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if (*str != openquote)
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return (save(str));
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name = (char *) ecalloc(strlen(str), sizeof(char));
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strcpy(name, str+1);
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p = name + strlen(name) - 1;
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if (*p == closequote)
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*p = '\0';
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return (name);
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#else
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return (save(str));
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#endif
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}
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/*
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* Return a pathname that points to a specified file in a specified directory.
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* Return NULL if the file does not exist in the directory.
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*/
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static char *
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dirfile(dirname, filename)
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char *dirname;
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char *filename;
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{
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char *pathname;
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char *qpathname;
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int f;
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if (dirname == NULL || *dirname == '\0')
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return (NULL);
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/*
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* Construct the full pathname.
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*/
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pathname = (char *) calloc(strlen(dirname) + strlen(filename) + 2,
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sizeof(char));
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if (pathname == NULL)
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return (NULL);
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sprintf(pathname, "%s%s%s", dirname, PATHNAME_SEP, filename);
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/*
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* Make sure the file exists.
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*/
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qpathname = unquote_file(pathname);
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f = open(qpathname, OPEN_READ);
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if (f < 0)
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{
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free(pathname);
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pathname = NULL;
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} else
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{
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close(f);
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}
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free(qpathname);
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return (pathname);
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}
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/*
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* Return the full pathname of the given file in the "home directory".
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*/
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public char *
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homefile(filename)
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char *filename;
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{
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register char *pathname;
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/*
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* Try $HOME/filename.
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*/
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pathname = dirfile(lgetenv("HOME"), filename);
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if (pathname != NULL)
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return (pathname);
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#if OS2
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/*
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* Try $INIT/filename.
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*/
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pathname = dirfile(lgetenv("INIT"), filename);
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if (pathname != NULL)
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return (pathname);
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#endif
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#if MSDOS_COMPILER || OS2
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/*
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* Look for the file anywhere on search path.
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*/
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pathname = (char *) calloc(_MAX_PATH, sizeof(char));
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#if MSDOS_COMPILER==DJGPPC
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{
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char *res = searchpath(filename);
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if (res == 0)
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*pathname = '\0';
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else
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strcpy(pathname, res);
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}
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#else
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_searchenv(filename, "PATH", pathname);
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#endif
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if (*pathname != '\0')
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return (pathname);
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free(pathname);
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#endif
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return (NULL);
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}
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/*
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* Expand a string, substituting any "%" with the current filename,
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* and any "#" with the previous filename.
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* But a string of N "%"s is just replaced with N-1 "%"s.
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* Likewise for a string of N "#"s.
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* {{ This is a lot of work just to support % and #. }}
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*/
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public char *
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fexpand(s)
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char *s;
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{
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register char *fr, *to;
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register int n;
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register char *e;
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IFILE ifile;
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#define fchar_ifile(c) \
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((c) == '%' ? curr_ifile : \
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(c) == '#' ? old_ifile : NULL_IFILE)
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/*
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* Make one pass to see how big a buffer we
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* need to allocate for the expanded string.
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*/
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n = 0;
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for (fr = s; *fr != '\0'; fr++)
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{
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switch (*fr)
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{
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case '%':
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case '#':
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if (fr > s && fr[-1] == *fr)
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{
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/*
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* Second (or later) char in a string
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* of identical chars. Treat as normal.
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*/
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n++;
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} else if (fr[1] != *fr)
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{
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/*
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* Single char (not repeated). Treat specially.
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*/
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ifile = fchar_ifile(*fr);
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if (ifile == NULL_IFILE)
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n++;
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else
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n += strlen(get_filename(ifile));
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}
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/*
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* Else it is the first char in a string of
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* identical chars. Just discard it.
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*/
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break;
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default:
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n++;
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break;
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}
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}
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e = (char *) ecalloc(n+1, sizeof(char));
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/*
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* Now copy the string, expanding any "%" or "#".
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*/
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to = e;
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for (fr = s; *fr != '\0'; fr++)
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{
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switch (*fr)
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{
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case '%':
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case '#':
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if (fr > s && fr[-1] == *fr)
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{
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*to++ = *fr;
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} else if (fr[1] != *fr)
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{
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ifile = fchar_ifile(*fr);
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if (ifile == NULL_IFILE)
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*to++ = *fr;
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else
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{
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strcpy(to, get_filename(ifile));
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to += strlen(to);
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}
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}
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break;
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default:
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*to++ = *fr;
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break;
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}
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}
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*to = '\0';
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return (e);
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}
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#if TAB_COMPLETE_FILENAME
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/*
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* Return a blank-separated list of filenames which "complete"
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* the given string.
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*/
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public char *
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fcomplete(s)
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char *s;
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{
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char *fpat;
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if (secure)
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return (NULL);
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/*
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* Complete the filename "s" by globbing "s*".
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*/
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#if MSDOS_COMPILER && (MSDOS_COMPILER == MSOFTC || MSDOS_COMPILER == BORLANDC)
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/*
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* But in DOS, we have to glob "s*.*".
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* But if the final component of the filename already has
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* a dot in it, just do "s*".
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* (Thus, "FILE" is globbed as "FILE*.*",
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* but "FILE.A" is globbed as "FILE.A*").
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*/
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{
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char *slash;
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for (slash = s+strlen(s)-1; slash > s; slash--)
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if (*slash == *PATHNAME_SEP || *slash == '/')
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break;
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fpat = (char *) ecalloc(strlen(s)+4, sizeof(char));
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if (strchr(slash, '.') == NULL)
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sprintf(fpat, "%s*.*", s);
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else
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sprintf(fpat, "%s*", s);
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}
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#else
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fpat = (char *) ecalloc(strlen(s)+2, sizeof(char));
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sprintf(fpat, "%s*", s);
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#endif
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s = lglob(fpat);
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if (strcmp(s,fpat) == 0)
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{
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/*
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* The filename didn't expand.
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*/
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free(s);
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s = NULL;
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}
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free(fpat);
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return (s);
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}
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#endif
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/*
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* Try to determine if a file is "binary".
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* This is just a guess, and we need not try too hard to make it accurate.
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*/
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public int
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bin_file(f)
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int f;
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{
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int i;
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int n;
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unsigned char data[64];
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if (!seekable(f))
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return (0);
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if (lseek(f, (off_t)0, 0) == BAD_LSEEK)
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return (0);
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n = read(f, data, sizeof(data));
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for (i = 0; i < n; i++)
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if (binary_char(data[i]))
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return (1);
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return (0);
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}
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/*
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* Try to determine the size of a file by seeking to the end.
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*/
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static POSITION
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seek_filesize(f)
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int f;
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{
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off_t spos;
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spos = lseek(f, (off_t)0, 2);
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if (spos == BAD_LSEEK)
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return (NULL_POSITION);
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return ((POSITION) spos);
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}
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/*
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* Read a string from a file.
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* Return a pointer to the string in memory.
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*/
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static char *
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readfd(fd)
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FILE *fd;
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{
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int len;
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int ch;
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char *buf;
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char *p;
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/*
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* Make a guess about how many chars in the string
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* and allocate a buffer to hold it.
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*/
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len = 100;
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buf = (char *) ecalloc(len, sizeof(char));
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for (p = buf; ; p++)
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{
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if ((ch = getc(fd)) == '\n' || ch == EOF)
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break;
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if (p - buf >= len-1)
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{
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/*
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* The string is too big to fit in the buffer we have.
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* Allocate a new buffer, twice as big.
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*/
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len *= 2;
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*p = '\0';
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p = (char *) ecalloc(len, sizeof(char));
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strcpy(p, buf);
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free(buf);
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buf = p;
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p = buf + strlen(buf);
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}
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*p = ch;
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}
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*p = '\0';
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return (buf);
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}
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#if HAVE_SHELL
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/*
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* Get the shell's escape character.
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*/
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static char *
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get_meta_escape()
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{
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char *s;
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s = lgetenv("LESSMETAESCAPE");
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if (s == NULL)
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s = DEF_METAESCAPE;
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return (s);
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}
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/*
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* Is this a shell metacharacter?
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*/
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static int
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metachar(c)
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char c;
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{
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static char *metachars = NULL;
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if (metachars == NULL)
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{
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metachars = lgetenv("LESSMETACHARS");
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if (metachars == NULL)
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metachars = DEF_METACHARS;
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}
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return (strchr(metachars, c) != NULL);
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}
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/*
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* Insert a backslash before each metacharacter in a string.
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*/
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public char *
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esc_metachars(s)
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char *s;
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{
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char *p;
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char *newstr;
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int len;
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char *esc;
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int esclen;
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/*
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* Determine how big a string we need to allocate.
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*/
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esc = get_meta_escape();
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esclen = strlen(esc);
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len = 1; /* Trailing null byte */
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for (p = s; *p != '\0'; p++)
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{
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len++;
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if (metachar(*p))
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{
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if (*esc == '\0')
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{
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/*
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* We've got a metachar, but this shell
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* doesn't support escape chars. Give up.
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*/
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return (NULL);
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}
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/*
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* Allow space for the escape char.
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*/
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len += esclen;
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}
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}
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/*
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* Allocate and construct the new string.
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*/
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newstr = p = (char *) ecalloc(len, sizeof(char));
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while (*s != '\0')
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{
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if (metachar(*s))
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{
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/*
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* Add the escape char.
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*/
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strcpy(p, esc);
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p += esclen;
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}
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*p++ = *s++;
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}
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*p = '\0';
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return (newstr);
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}
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|
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#else /* HAVE_SHELL */
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|
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public char *
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esc_metachars(s)
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char *s;
|
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{
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return (save(s));
|
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}
|
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|
|
#endif /* HAVE_SHELL */
|
|
|
|
|
|
#if HAVE_POPEN
|
|
|
|
FILE *popen();
|
|
|
|
/*
|
|
* Execute a shell command.
|
|
* Return a pointer to a pipe connected to the shell command's standard output.
|
|
*/
|
|
static FILE *
|
|
shellcmd(cmd)
|
|
char *cmd;
|
|
{
|
|
FILE *fd;
|
|
|
|
#if HAVE_SHELL
|
|
char *shell;
|
|
|
|
shell = lgetenv("SHELL");
|
|
if (shell != NULL && *shell != '\0')
|
|
{
|
|
char *scmd;
|
|
char *esccmd;
|
|
|
|
/*
|
|
* Try to escape any metacharacters in the command.
|
|
* If we can't do that, just put the command in quotes.
|
|
* (But that doesn't work well if the command itself
|
|
* contains quotes.)
|
|
*/
|
|
if ((esccmd = esc_metachars(cmd)) == NULL)
|
|
{
|
|
/*
|
|
* Cannot escape the metacharacters, so use quotes.
|
|
* Read the output of <$SHELL -c "cmd">.
|
|
*/
|
|
scmd = (char *) ecalloc(strlen(shell) + strlen(cmd) + 7,
|
|
sizeof(char));
|
|
sprintf(scmd, "%s -c \"%s\"", shell, cmd);
|
|
} else
|
|
{
|
|
/*
|
|
* Read the output of <$SHELL -c cmd>.
|
|
* No quotes; use the escaped cmd.
|
|
*/
|
|
scmd = (char *) ecalloc(strlen(shell) + strlen(esccmd) + 5,
|
|
sizeof(char));
|
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sprintf(scmd, "%s -c %s", shell, esccmd);
|
|
free(esccmd);
|
|
}
|
|
fd = popen(scmd, "r");
|
|
free(scmd);
|
|
} else
|
|
#endif
|
|
{
|
|
fd = popen(cmd, "r");
|
|
/*
|
|
* Redirection in `popen' might have messed with the
|
|
* standard devices. Restore binary input mode.
|
|
*/
|
|
SET_BINARY(0);
|
|
}
|
|
return (fd);
|
|
}
|
|
|
|
#endif /* HAVE_POPEN */
|
|
|
|
|
|
/*
|
|
* Expand a filename, doing any system-specific metacharacter substitutions.
|
|
*/
|
|
public char *
|
|
lglob(filename)
|
|
char *filename;
|
|
{
|
|
char *gfilename;
|
|
char *ofilename;
|
|
|
|
ofilename = fexpand(filename);
|
|
if (secure)
|
|
return (ofilename);
|
|
filename = unquote_file(ofilename);
|
|
|
|
#ifdef DECL_GLOB_LIST
|
|
{
|
|
/*
|
|
* The globbing function returns a list of names.
|
|
*/
|
|
int length;
|
|
char *p;
|
|
DECL_GLOB_LIST(list)
|
|
|
|
GLOB_LIST(filename, list);
|
|
if (GLOB_LIST_FAILED(list))
|
|
{
|
|
free(filename);
|
|
return (ofilename);
|
|
}
|
|
length = 1; /* Room for trailing null byte */
|
|
for (SCAN_GLOB_LIST(list, p))
|
|
{
|
|
INIT_GLOB_LIST(list, p);
|
|
length += strlen(p) + 1;
|
|
#if SPACES_IN_FILENAMES
|
|
if (strchr(p, ' ') != NULL)
|
|
length += 2; /* Allow for quotes */
|
|
#endif
|
|
}
|
|
gfilename = (char *) ecalloc(length, sizeof(char));
|
|
for (SCAN_GLOB_LIST(list, p))
|
|
{
|
|
INIT_GLOB_LIST(list, p);
|
|
#if SPACES_IN_FILENAMES
|
|
if (strchr(p, ' ') != NULL)
|
|
sprintf(gfilename + strlen(gfilename), "%c%s%c ",
|
|
openquote, p, closequote);
|
|
else
|
|
#endif
|
|
sprintf(gfilename + strlen(gfilename), "%s ", p);
|
|
}
|
|
/*
|
|
* Overwrite the final trailing space with a null terminator.
|
|
*/
|
|
*--p = '\0';
|
|
GLOB_LIST_DONE(list);
|
|
}
|
|
#else
|
|
#ifdef DECL_GLOB_NAME
|
|
{
|
|
/*
|
|
* The globbing function returns a single name, and
|
|
* is called multiple times to walk thru all names.
|
|
*/
|
|
register char *p;
|
|
register int len;
|
|
register int n;
|
|
#if SPACES_IN_FILENAMES
|
|
register int spaces_in_file;
|
|
#endif
|
|
DECL_GLOB_NAME(fnd,drive,dir,fname,ext,handle)
|
|
|
|
GLOB_FIRST_NAME(filename, &fnd, handle);
|
|
if (GLOB_FIRST_FAILED(handle))
|
|
{
|
|
free(filename);
|
|
return (ofilename);
|
|
}
|
|
|
|
_splitpath(filename, drive, dir, fname, ext);
|
|
len = 100;
|
|
gfilename = (char *) ecalloc(len, sizeof(char));
|
|
p = gfilename;
|
|
do {
|
|
n = strlen(drive) + strlen(dir) + strlen(fnd.GLOB_NAME) + 1;
|
|
#if SPACES_IN_FILENAMES
|
|
spaces_in_file = 0;
|
|
if (strchr(fnd.GLOB_NAME, ' ') != NULL ||
|
|
strchr(filename, ' ') != NULL)
|
|
{
|
|
spaces_in_file = 1;
|
|
n += 2;
|
|
}
|
|
#endif
|
|
while (p - gfilename + n+2 >= len)
|
|
{
|
|
/*
|
|
* No room in current buffer. Allocate a bigger one.
|
|
*/
|
|
len *= 2;
|
|
*p = '\0';
|
|
p = (char *) ecalloc(len, sizeof(char));
|
|
strcpy(p, gfilename);
|
|
free(gfilename);
|
|
gfilename = p;
|
|
p = gfilename + strlen(gfilename);
|
|
}
|
|
#if SPACES_IN_FILENAMES
|
|
if (spaces_in_file)
|
|
sprintf(p, "%c%s%s%s%c ", openquote,
|
|
drive, dir, fnd.GLOB_NAME, closequote);
|
|
else
|
|
#endif
|
|
sprintf(p, "%s%s%s ", drive, dir, fnd.GLOB_NAME);
|
|
p += n;
|
|
} while (GLOB_NEXT_NAME(handle, &fnd) == 0);
|
|
|
|
/*
|
|
* Overwrite the final trailing space with a null terminator.
|
|
*/
|
|
*--p = '\0';
|
|
GLOB_NAME_DONE(handle);
|
|
}
|
|
#else
|
|
#if HAVE_POPEN
|
|
{
|
|
/*
|
|
* We get the shell to glob the filename for us by passing
|
|
* an "echo" command to the shell and reading its output.
|
|
*/
|
|
FILE *fd;
|
|
char *s;
|
|
char *lessecho;
|
|
char *cmd;
|
|
|
|
lessecho = lgetenv("LESSECHO");
|
|
if (lessecho == NULL || *lessecho == '\0')
|
|
lessecho = "lessecho";
|
|
s = esc_metachars(filename);
|
|
if (s == NULL)
|
|
{
|
|
/*
|
|
* There may be dangerous metachars in this name.
|
|
* We can't risk passing it to the shell.
|
|
* {{ For example, do "!;TAB" when the first file
|
|
* in the dir is named "rm". }}
|
|
*/
|
|
free(filename);
|
|
return (ofilename);
|
|
}
|
|
/*
|
|
* Invoke lessecho, and read its output (a globbed list of filenames).
|
|
*/
|
|
cmd = (char *) ecalloc(strlen(lessecho) + strlen(s) + 24, sizeof(char));
|
|
sprintf(cmd, "%s -p0x%x -d0x%x -- %s",
|
|
lessecho, openquote, closequote, s);
|
|
fd = shellcmd(cmd);
|
|
free(s);
|
|
free(cmd);
|
|
if (fd == NULL)
|
|
{
|
|
/*
|
|
* Cannot create the pipe.
|
|
* Just return the original (fexpanded) filename.
|
|
*/
|
|
free(filename);
|
|
return (ofilename);
|
|
}
|
|
gfilename = readfd(fd);
|
|
pclose(fd);
|
|
if (*gfilename == '\0')
|
|
{
|
|
free(gfilename);
|
|
free(filename);
|
|
return (ofilename);
|
|
}
|
|
}
|
|
#else
|
|
/*
|
|
* No globbing functions at all. Just use the fexpanded filename.
|
|
*/
|
|
gfilename = save(filename);
|
|
#endif
|
|
#endif
|
|
#endif
|
|
free(filename);
|
|
free(ofilename);
|
|
return (gfilename);
|
|
}
|
|
|
|
/*
|
|
* See if we should open a "replacement file"
|
|
* instead of the file we're about to open.
|
|
*/
|
|
public char *
|
|
open_altfile(filename, pf, pfd)
|
|
char *filename;
|
|
int *pf;
|
|
void **pfd;
|
|
{
|
|
#if !HAVE_POPEN
|
|
return (NULL);
|
|
#else
|
|
char *lessopen;
|
|
char *gfilename;
|
|
char *cmd;
|
|
FILE *fd;
|
|
#if HAVE_FILENO
|
|
int returnfd = 0;
|
|
#endif
|
|
|
|
if (secure)
|
|
return (NULL);
|
|
ch_ungetchar(-1);
|
|
if ((lessopen = lgetenv("LESSOPEN")) == NULL)
|
|
return (NULL);
|
|
if (strcmp(filename, "-") == 0)
|
|
return (NULL);
|
|
if (*lessopen == '|')
|
|
{
|
|
/*
|
|
* If LESSOPEN starts with a |, it indicates
|
|
* a "pipe preprocessor".
|
|
*/
|
|
#if HAVE_FILENO
|
|
lessopen++;
|
|
returnfd = 1;
|
|
#else
|
|
error("LESSOPEN pipe is not supported", NULL_PARG);
|
|
return (NULL);
|
|
#endif
|
|
}
|
|
|
|
gfilename = esc_metachars(filename);
|
|
if (gfilename == NULL)
|
|
{
|
|
/*
|
|
* Cannot escape metacharacters.
|
|
*/
|
|
return (NULL);
|
|
}
|
|
cmd = (char *) ecalloc(strlen(lessopen) + strlen(gfilename) + 2,
|
|
sizeof(char));
|
|
sprintf(cmd, lessopen, gfilename);
|
|
fd = shellcmd(cmd);
|
|
free(gfilename);
|
|
free(cmd);
|
|
if (fd == NULL)
|
|
{
|
|
/*
|
|
* Cannot create the pipe.
|
|
*/
|
|
return (NULL);
|
|
}
|
|
#if HAVE_FILENO
|
|
if (returnfd)
|
|
{
|
|
int f;
|
|
char c;
|
|
|
|
/*
|
|
* Read one char to see if the pipe will produce any data.
|
|
* If it does, push the char back on the pipe.
|
|
*/
|
|
f = fileno(fd);
|
|
SET_BINARY(f);
|
|
if (read(f, &c, 1) != 1)
|
|
{
|
|
/*
|
|
* Pipe is empty. This means there is no alt file.
|
|
*/
|
|
pclose(fd);
|
|
return (NULL);
|
|
}
|
|
ch_ungetchar(c);
|
|
*pfd = (void *) fd;
|
|
*pf = f;
|
|
return (save("-"));
|
|
}
|
|
#endif
|
|
gfilename = readfd(fd);
|
|
pclose(fd);
|
|
if (*gfilename == '\0')
|
|
/*
|
|
* Pipe is empty. This means there is no alt file.
|
|
*/
|
|
return (NULL);
|
|
return (gfilename);
|
|
#endif /* HAVE_POPEN */
|
|
}
|
|
|
|
/*
|
|
* Close a replacement file.
|
|
*/
|
|
public void
|
|
close_altfile(altfilename, filename, pipefd)
|
|
char *altfilename;
|
|
char *filename;
|
|
void *pipefd;
|
|
{
|
|
#if HAVE_POPEN
|
|
char *lessclose;
|
|
char *gfilename;
|
|
char *galtfilename;
|
|
FILE *fd;
|
|
char *cmd;
|
|
|
|
if (secure)
|
|
return;
|
|
if (pipefd != NULL)
|
|
pclose((FILE*) pipefd);
|
|
if ((lessclose = lgetenv("LESSCLOSE")) == NULL)
|
|
return;
|
|
gfilename = esc_metachars(filename);
|
|
if (gfilename == NULL)
|
|
{
|
|
return;
|
|
}
|
|
galtfilename = esc_metachars(altfilename);
|
|
if (galtfilename == NULL)
|
|
{
|
|
free(gfilename);
|
|
return;
|
|
}
|
|
cmd = (char *) ecalloc(strlen(lessclose) + strlen(gfilename) +
|
|
strlen(galtfilename) + 2, sizeof(char));
|
|
sprintf(cmd, lessclose, gfilename, galtfilename);
|
|
fd = shellcmd(cmd);
|
|
free(galtfilename);
|
|
free(gfilename);
|
|
free(cmd);
|
|
if (fd != NULL)
|
|
pclose(fd);
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Is the specified file a directory?
|
|
*/
|
|
public int
|
|
is_dir(filename)
|
|
char *filename;
|
|
{
|
|
int isdir = 0;
|
|
|
|
filename = unquote_file(filename);
|
|
#if HAVE_STAT
|
|
{
|
|
int r;
|
|
struct stat statbuf;
|
|
|
|
r = stat(filename, &statbuf);
|
|
isdir = (r >= 0 && S_ISDIR(statbuf.st_mode));
|
|
}
|
|
#else
|
|
#ifdef _OSK
|
|
{
|
|
register int f;
|
|
|
|
f = open(filename, S_IREAD | S_IFDIR);
|
|
if (f >= 0)
|
|
close(f);
|
|
isdir = (f >= 0);
|
|
}
|
|
#endif
|
|
#endif
|
|
free(filename);
|
|
return (isdir);
|
|
}
|
|
|
|
/*
|
|
* Returns NULL if the file can be opened and
|
|
* is an ordinary file, otherwise an error message
|
|
* (if it cannot be opened or is a directory, etc.)
|
|
*/
|
|
public char *
|
|
bad_file(filename)
|
|
char *filename;
|
|
{
|
|
register char *m = NULL;
|
|
|
|
filename = unquote_file(filename);
|
|
if (is_dir(filename))
|
|
{
|
|
static char is_dir[] = " is a directory";
|
|
|
|
m = (char *) ecalloc(strlen(filename) + sizeof(is_dir),
|
|
sizeof(char));
|
|
strcpy(m, filename);
|
|
strcat(m, is_dir);
|
|
} else
|
|
{
|
|
#if HAVE_STAT
|
|
int r;
|
|
struct stat statbuf;
|
|
|
|
r = stat(filename, &statbuf);
|
|
if (r < 0)
|
|
{
|
|
m = errno_message(filename);
|
|
} else if (force_open)
|
|
{
|
|
m = NULL;
|
|
} else if (!S_ISREG(statbuf.st_mode))
|
|
{
|
|
static char not_reg[] = " is not a regular file (use -f to see it)";
|
|
m = (char *) ecalloc(strlen(filename) + sizeof(not_reg),
|
|
sizeof(char));
|
|
strcpy(m, filename);
|
|
strcat(m, not_reg);
|
|
}
|
|
#endif
|
|
}
|
|
free(filename);
|
|
return (m);
|
|
}
|
|
|
|
/*
|
|
* Return the size of a file, as cheaply as possible.
|
|
* In Unix, we can stat the file.
|
|
*/
|
|
public POSITION
|
|
filesize(f)
|
|
int f;
|
|
{
|
|
#if HAVE_STAT
|
|
struct stat statbuf;
|
|
|
|
if (fstat(f, &statbuf) >= 0)
|
|
return ((POSITION) statbuf.st_size);
|
|
#else
|
|
#ifdef _OSK
|
|
long size;
|
|
|
|
if ((size = (long) _gs_size(f)) >= 0)
|
|
return ((POSITION) size);
|
|
#endif
|
|
#endif
|
|
return (seek_filesize(f));
|
|
}
|
|
|