/js/lib/Socket.IO-node/support/expresso/deps/jscoverage/js/config/pathsub.c

  1/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
  2/* ***** BEGIN LICENSE BLOCK *****
  3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  4 *
  5 * The contents of this file are subject to the Mozilla Public License Version
  6 * 1.1 (the "License"); you may not use this file except in compliance with
  7 * the License. You may obtain a copy of the License at
  8 * http://www.mozilla.org/MPL/
  9 *
 10 * Software distributed under the License is distributed on an "AS IS" basis,
 11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 12 * for the specific language governing rights and limitations under the
 13 * License.
 14 *
 15 * The Original Code is mozilla.org code.
 16 *
 17 * The Initial Developer of the Original Code is
 18 * Netscape Communications Corporation.
 19 * Portions created by the Initial Developer are Copyright (C) 1998
 20 * the Initial Developer. All Rights Reserved.
 21 *
 22 * Contributor(s):
 23 *
 24 * Alternatively, the contents of this file may be used under the terms of
 25 * either of the GNU General Public License Version 2 or later (the "GPL"),
 26 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 27 * in which case the provisions of the GPL or the LGPL are applicable instead
 28 * of those above. If you wish to allow use of your version of this file only
 29 * under the terms of either the GPL or the LGPL, and not to allow others to
 30 * use your version of this file under the terms of the MPL, indicate your
 31 * decision by deleting the provisions above and replace them with the notice
 32 * and other provisions required by the GPL or the LGPL. If you do not delete
 33 * the provisions above, a recipient may use your version of this file under
 34 * the terms of any one of the MPL, the GPL or the LGPL.
 35 *
 36 * ***** END LICENSE BLOCK ***** */
 37/*
 38** Pathname subroutines.
 39**
 40** Brendan Eich, 8/29/95
 41*/
 42#include <assert.h>
 43#include <sys/types.h>
 44#include <dirent.h>
 45#include <errno.h>
 46#include <stdarg.h>
 47#include <stdio.h>
 48#include <stdlib.h>
 49#include <string.h>
 50#include <unistd.h>
 51#include <sys/stat.h>
 52#include "pathsub.h"
 53
 54#ifdef USE_REENTRANT_LIBC
 55#include <libc_r.h>
 56#endif
 57
 58#ifdef SUNOS4
 59#include "sunos4.h"
 60#endif
 61
 62#ifndef D_INO
 63#define D_INO	d_ino
 64#endif
 65
 66char *program;
 67
 68void
 69fail(char *format, ...)
 70{
 71    int error;
 72    va_list ap;
 73
 74#ifdef USE_REENTRANT_LIBC
 75    R_STRERROR_INIT_R();
 76#endif
 77
 78    error = errno;
 79    fprintf(stderr, "%s: ", program);
 80    va_start(ap, format);
 81    vfprintf(stderr, format, ap);
 82    va_end(ap);
 83    if (error) {
 84
 85#ifdef USE_REENTRANT_LIBC
 86    R_STRERROR_R(errno);
 87	fprintf(stderr, ": %s", r_strerror_r);
 88#else
 89	fprintf(stderr, ": %s", strerror(errno));
 90#endif
 91    }
 92
 93    putc('\n', stderr);
 94    exit(1);
 95}
 96
 97char *
 98getcomponent(char *path, char *name)
 99{
100    if (*path == '\0')
101	return 0;
102    if (*path == '/') {
103	*name++ = '/';
104    } else {
105	do {
106	    *name++ = *path++;
107	} while (*path != '/' && *path != '\0');
108    }
109    *name = '\0';
110    while (*path == '/')
111	path++;
112    return path;
113}
114
115#ifdef LAME_READDIR
116#include <sys/param.h>
117/*
118** The static buffer in Unixware's readdir is too small.
119*/
120struct dirent *readdir(DIR *d)
121{
122        static struct dirent *buf = NULL;
123
124        if(buf == NULL)
125                buf = (struct dirent *) malloc(sizeof(struct dirent) + MAXPATHLEN);
126        return(readdir_r(d, buf));
127}
128#endif
129
130char *
131ino2name(ino_t ino, char *dir)
132{
133    DIR *dp;
134    struct dirent *ep;
135    char *name;
136
137    dp = opendir("..");
138    if (!dp)
139	fail("cannot read parent directory");
140    for (;;) {
141	if (!(ep = readdir(dp)))
142	    fail("cannot find current directory");
143	if (ep->D_INO == ino)
144	    break;
145    }
146    name = xstrdup(ep->d_name);
147    closedir(dp);
148    return name;
149}
150
151void *
152xmalloc(size_t size)
153{
154    void *p = malloc(size);
155    if (!p)
156	fail("cannot allocate %u bytes", size);
157    return p;
158}
159
160char *
161xstrdup(char *s)
162{
163    return strcpy(xmalloc(strlen(s) + 1), s);
164}
165
166char *
167xbasename(char *path)
168{
169    char *cp;
170
171    while ((cp = strrchr(path, '/')) && cp[1] == '\0')
172	*cp = '\0';
173    if (!cp) return path;
174    return cp + 1;
175}
176
177void
178xchdir(char *dir)
179{
180    if (chdir(dir) < 0)
181	fail("cannot change directory to %s", dir);
182}
183
184int
185relatepaths(char *from, char *to, char *outpath)
186{
187    char *cp, *cp2;
188    int len;
189    char buf[NAME_MAX];
190
191    assert(*from == '/' && *to == '/');
192    for (cp = to, cp2 = from; *cp == *cp2; cp++, cp2++)
193	if (*cp == '\0')
194	    break;
195    while (cp[-1] != '/')
196	cp--, cp2--;
197    if (cp - 1 == to) {
198	/* closest common ancestor is /, so use full pathname */
199	len = strlen(strcpy(outpath, to));
200	if (outpath[len] != '/') {
201	    outpath[len++] = '/';
202	    outpath[len] = '\0';
203	}
204    } else {
205	len = 0;
206	while ((cp2 = getcomponent(cp2, buf)) != 0) {
207	    strcpy(outpath + len, "../");
208	    len += 3;
209	}
210	while ((cp = getcomponent(cp, buf)) != 0) {
211	    sprintf(outpath + len, "%s/", buf);
212	    len += strlen(outpath + len);
213	}
214    }
215    return len;
216}
217
218void
219reversepath(char *inpath, char *name, int len, char *outpath)
220{
221    char *cp, *cp2;
222    char buf[NAME_MAX];
223    struct stat sb;
224
225    cp = strcpy(outpath + PATH_MAX - (len + 1), name);
226    cp2 = inpath;
227    while ((cp2 = getcomponent(cp2, buf)) != 0) {
228	if (strcmp(buf, ".") == 0)
229	    continue;
230	if (strcmp(buf, "..") == 0) {
231	    if (stat(".", &sb) < 0)
232		fail("cannot stat current directory");
233	    name = ino2name(sb.st_ino, "..");
234	    len = strlen(name);
235	    cp -= len + 1;
236	    strcpy(cp, name);
237	    cp[len] = '/';
238	    free(name);
239	    xchdir("..");
240	} else {
241	    cp -= 3;
242	    strncpy(cp, "../", 3);
243	    xchdir(buf);
244	}
245    }
246    strcpy(outpath, cp);
247}