IDZEBRA  2.1.2
dir.c
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1 /* This file is part of the Zebra server.
2  Copyright (C) Index Data
3 
4 Zebra is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
7 version.
8 
9 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 for more details.
13 
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 
18 */
19 
20 
21 #if HAVE_CONFIG_H
22 #include <config.h>
23 #endif
24 #include <stdio.h>
25 #include <string.h>
26 #include <assert.h>
27 #if HAVE_UNISTD_H
28 #include <unistd.h>
29 #endif
30 #include <direntz.h>
31 #include <sys/types.h>
32 #include <errno.h>
33 #include <fcntl.h>
34 
35 #include "index.h"
36 
37 
38 int zebra_file_stat(const char *file_name, struct stat *buf,
39  int follow_links)
40 {
41 #ifndef WIN32
42  if (!follow_links)
43  return lstat(file_name, buf);
44 #endif
45  return stat(file_name, buf);
46 }
47 
48 struct dir_entry *dir_open(const char *rep, const char *base,
49  int follow_links)
50 {
51  DIR *dir;
52  char path[1024];
53  char full_rep[1024];
54  size_t pathpos;
55  struct dirent dent_s, *dent = &dent_s;
56  size_t entry_max = 500;
57  size_t idx = 0;
58  struct dir_entry *entry;
59 
60  if (base && !yaz_is_abspath(rep))
61  {
62  strcpy(full_rep, base);
63  strcat(full_rep, "/");
64  }
65  else
66  *full_rep = '\0';
67  strcat(full_rep, rep);
68 
69  yaz_log(YLOG_DEBUG, "dir_open %s", full_rep);
70  if (!(dir = opendir(full_rep)))
71  {
72  yaz_log(YLOG_WARN|YLOG_ERRNO, "opendir %s", rep);
73  return NULL;
74  }
75  entry = (struct dir_entry *) xmalloc(sizeof(*entry) * entry_max);
76  strcpy(path, rep);
77  pathpos = strlen(path);
78  if (!pathpos || path[pathpos-1] != '/')
79  path[pathpos++] = '/';
80  while ( (dent = readdir(dir)) )
81  {
82  struct stat finfo;
83  if (strcmp(dent->d_name, ".") == 0 ||
84  strcmp(dent->d_name, "..") == 0)
85  continue;
86  if (idx == entry_max-1)
87  {
88  struct dir_entry *entry_n;
89 
90  entry_n = (struct dir_entry *)
91  xmalloc(sizeof(*entry) * (entry_max += 1000));
92  memcpy(entry_n, entry, idx * sizeof(*entry));
93  xfree(entry);
94  entry = entry_n;
95  }
96  strcpy(path + pathpos, dent->d_name);
97 
98  if (base && !yaz_is_abspath(path))
99  {
100  strcpy(full_rep, base);
101  strcat(full_rep, "/");
102  strcat(full_rep, path);
103  zebra_file_stat(full_rep, &finfo, follow_links);
104  }
105  else
106  zebra_file_stat(path, &finfo, follow_links);
107  switch (finfo.st_mode & S_IFMT)
108  {
109  case S_IFREG:
110  entry[idx].kind = dirs_file;
111  entry[idx].mtime = finfo.st_mtime;
112  entry[idx].name = (char *) xmalloc(strlen(dent->d_name)+1);
113  strcpy(entry[idx].name, dent->d_name);
114  idx++;
115  break;
116  case S_IFDIR:
117  entry[idx].kind = dirs_dir;
118  entry[idx].mtime = finfo.st_mtime;
119  entry[idx].name = (char *) xmalloc(strlen(dent->d_name)+2);
120  strcpy(entry[idx].name, dent->d_name);
121  strcat(entry[idx].name, "/");
122  idx++;
123  break;
124  }
125  }
126  entry[idx].name = NULL;
127  closedir(dir);
128  yaz_log(YLOG_DEBUG, "dir_close");
129  return entry;
130 }
131 
132 static int dir_cmp(const void *p1, const void *p2)
133 {
134  return strcmp(((struct dir_entry *) p1)->name,
135  ((struct dir_entry *) p2)->name);
136 }
137 
138 void dir_sort(struct dir_entry *e)
139 {
140  size_t nmemb = 0;
141  while (e[nmemb].name)
142  nmemb++;
143  qsort(e, nmemb, sizeof(*e), dir_cmp);
144 }
145 
146 void dir_free(struct dir_entry **e_p)
147 {
148  size_t i = 0;
149  struct dir_entry *e = *e_p;
150 
151  assert(e);
152  while (e[i].name)
153  xfree(e[i++].name);
154  xfree(e);
155  *e_p = NULL;
156 }
157 /*
158  * Local variables:
159  * c-basic-offset: 4
160  * c-file-style: "Stroustrup"
161  * indent-tabs-mode: nil
162  * End:
163  * vim: shiftwidth=4 tabstop=8 expandtab
164  */
165 
time_t mtime
Definition: index.h:60
Definition: index.h:55
struct dir_entry * dir_open(const char *rep, const char *base, int follow_links)
Definition: dir.c:48
int zebra_file_stat(const char *file_name, struct stat *buf, int follow_links)
Definition: dir.c:38
char * name
Definition: index.h:59
void dir_sort(struct dir_entry *e)
Definition: dir.c:138
enum dirsKind kind
Definition: index.h:58
void dir_free(struct dir_entry **e_p)
Definition: dir.c:146
static int dir_cmp(const void *p1, const void *p2)
Definition: dir.c:132
Definition: index.h:57