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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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** Pathname subroutines.
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** Brendan Eich, 8/29/95
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#include <sys/types.h>
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#ifdef USE_REENTRANT_LIBC
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fail(char *format, ...)
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#ifdef USE_REENTRANT_LIBC
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fprintf(stderr, "%s: ", program);
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vfprintf(stderr, format, ap);
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#ifdef USE_REENTRANT_LIBC
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fprintf(stderr, ": %s", r_strerror_r);
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fprintf(stderr, ": %s", strerror(errno));
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getcomponent(char *path, char *name)
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} while (*path != '/' && *path != '\0');
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#include <sys/param.h>
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** The static buffer in Unixware's readdir is too small.
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struct dirent *readdir(DIR *d)
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static struct dirent *buf = NULL;
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buf = (struct dirent *) malloc(sizeof(struct dirent) + MAXPATHLEN);
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return(readdir_r(d, buf));
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fail("cannot read parent directory");
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if (!(ep = readdir(dp)))
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fail("cannot find current directory");
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if (ep->D_INO == ino)
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name = xstrdup(ep->d_name);
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void *p = malloc(size);
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fail("cannot allocate %u bytes", size);
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return strcpy(xmalloc(strlen(s) + 1), s);
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xbasename(char *path)
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while ((cp = strrchr(path, '/')) && cp[1] == '\0')
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if (!cp) return path;
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fail("cannot change directory to %s", dir);
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relatepaths(char *from, char *to, char *outpath)
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assert(*from == '/' && *to == '/');
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for (cp = to, cp2 = from; *cp == *cp2; cp++, cp2++)
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while (cp[-1] != '/')
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/* closest common ancestor is /, so use full pathname */
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len = strlen(strcpy(outpath, to));
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if (outpath[len] != '/') {
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outpath[len++] = '/';
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while ((cp2 = getcomponent(cp2, buf)) != 0) {
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strcpy(outpath + len, "../");
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while ((cp = getcomponent(cp, buf)) != 0) {
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sprintf(outpath + len, "%s/", buf);
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len += strlen(outpath + len);
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reversepath(char *inpath, char *name, int len, char *outpath)
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cp = strcpy(outpath + PATH_MAX - (len + 1), name);
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while ((cp2 = getcomponent(cp2, buf)) != 0) {
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if (strcmp(buf, ".") == 0)
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if (strcmp(buf, "..") == 0) {
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if (stat(".", &sb) < 0)
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fail("cannot stat current directory");
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name = ino2name(sb.st_ino);
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strncpy(cp, "../", 3);