/[jscoverage]/trunk/js/config/pathsub.c
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Annotation of /trunk/js/config/pathsub.c

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Revision 399 - (hide annotations)
Tue Dec 9 03:37:47 2008 UTC (13 years, 9 months ago) by siliconforks
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1 siliconforks 399 /* -*- 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    
66     char *program;
67    
68     void
69     fail(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    
97     char *
98     getcomponent(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     */
120     struct 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    
130     char *
131     ino2name(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    
151     void *
152     xmalloc(size_t size)
153     {
154     void *p = malloc(size);
155     if (!p)
156     fail("cannot allocate %u bytes", size);
157     return p;
158     }
159    
160     char *
161     xstrdup(char *s)
162     {
163     return strcpy(xmalloc(strlen(s) + 1), s);
164     }
165    
166     char *
167     xbasename(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    
177     void
178     xchdir(char *dir)
179     {
180     if (chdir(dir) < 0)
181     fail("cannot change directory to %s", dir);
182     }
183    
184     int
185     relatepaths(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    
218     void
219     reversepath(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     }

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