a9c42a2388
intelligent name handling in pkg_create. Most of these files are changed because of rcsid's being different in my cvs tree and freefall's (foo).
165 lines
3.8 KiB
C
165 lines
3.8 KiB
C
#ifndef lint
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static const char *rcsid = "$Id: file.c,v 1.6 1993/09/04 05:06:48 jkh Exp $";
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#endif
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/*
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* FreeBSD install - a package for the installation and maintainance
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* of non-core utilities.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* Jordan K. Hubbard
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* 18 July 1993
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*
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* Miscellaneous file access utilities.
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*
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*/
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#include "lib.h"
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/* Quick check to see if a file exists */
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Boolean
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fexists(char *fname)
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{
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if (!access(fname, F_OK))
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return TRUE;
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return FALSE;
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}
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/* Quick check to see if something is a directory */
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Boolean
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isdir(char *fname)
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{
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struct stat sb;
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if (stat(fname, &sb) != FAIL &&
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(sb.st_mode & S_IFDIR))
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return TRUE;
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else
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return FALSE;
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}
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/* Check to see if file is a dir, and is empty */
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Boolean
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isempty(char *fname)
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{
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if (isdir(fname)) {
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DIR *dirp;
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struct dirent *dp;
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dirp = opendir(fname);
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if (!dirp)
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return FALSE; /* no perms, leave it alone */
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for (dp = readdir(dirp); dp != NULL; dp = readdir(dirp)) {
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if (strcmp(dp->d_name, ".") && strcmp(dp->d_name, "..")) {
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closedir(dirp);
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return FALSE;
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}
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}
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(void)closedir(dirp);
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return TRUE;
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}
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return FALSE;
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}
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char *
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get_file_contents(char *fname)
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{
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char *contents;
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struct stat sb;
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int fd;
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if (stat(fname, &sb) == FAIL)
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barf("Can't stat '%s'.", fname);
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contents = (char *)malloc(sb.st_size + 1);
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fd = open(fname, O_RDONLY, 0);
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if (fd == FAIL)
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barf("Unable to open '%s' for reading.", fname);
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if (read(fd, contents, sb.st_size) != sb.st_size)
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barf("Short read on '%s' - did not get %d bytes.", fname, sb.st_size);
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close(fd);
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contents[sb.st_size] = '\0';
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return contents;
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}
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/* Write the contents of "str" to a file */
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void
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write_file(char *name, char *str)
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{
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FILE *fp;
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int len;
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fp = fopen(name, "w");
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if (!fp)
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barf("Can't fopen '%s' for writing.", name);
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len = strlen(str);
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if (fwrite(str, 1, len, fp) != len)
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barf("Short fwrite on '%s', tried to write %d bytes.", name, len);
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if (fclose(fp))
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barf("failure to fclose '%s'.", name);
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}
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void
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copy_file(char *dir, char *fname, char *to)
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{
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if (vsystem("cp -p -r %s/%s %s", dir, fname, to))
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barf("Couldn't copy %s/%s to %s!", dir, fname, to);
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}
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/*
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* Copy a hierarchy (possibly from dir) to the current directory, or
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* if "to" is TRUE, from the current directory to a location someplace
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* else.
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*
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* Though slower, using tar to copy preserves symlinks and everything
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* without me having to write some big hairy routine to do it.
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*/
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void
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copy_hierarchy(char *dir, char *fname, Boolean to)
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{
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char cmd[FILENAME_MAX * 3];
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if (!to) {
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/* If absolute path, use it */
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if (*fname == '/')
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dir = "/";
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sprintf(cmd, "tar cf - -C %s %s | tar xpf -", dir, fname);
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}
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else
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sprintf(cmd, "tar cf - %s | tar xpf - -C %s", fname, dir);
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if (system(cmd))
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barf("copy_file: Couldn't perform '%s'", cmd);
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}
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/* Unpack a tar file */
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int
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unpack(char *pkg, char *flist)
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{
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char args[10], suffix[80], *cp;
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/*
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* Figure out by a crude heuristic whether this or not this is probably
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* compressed.
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*/
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cp = rindex(pkg, '.');
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if (cp) {
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strcpy(suffix, cp + 1);
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if (index(suffix, 'z') || index(suffix, 'Z'))
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strcpy(args, "z");
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}
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strcat(args, "xpf");
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if (vsystem("tar %s %s %s", args, pkg, flist ? flist : "")) {
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whinge("Tar extract of %s failed!", pkg);
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return 1;
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}
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return 0;
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}
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