1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
/** BEGIN COPYRIGHT BLOCK
* Copyright (C) 2001 Sun Microsystems, Inc. Used by permission.
* Copyright (C) 2005 Red Hat, Inc.
* All rights reserved.
* END COPYRIGHT BLOCK **/
/***********************************************************************
** NAME
** getfilelist.c
**
** DESCRIPTION
**
**
** AUTHOR
** Rich Megginson <richm@netscape.com>
**
***********************************************************************/
/***********************************************************************
** Includes
***********************************************************************/
#include "prio.h"
#include "slap.h"
#include "avl.h"
struct data_wrapper {
char **list;
int n;
int max;
const char *dirname;
};
static int
add_file_to_list(caddr_t data, caddr_t arg)
{
struct data_wrapper *dw = (struct data_wrapper *)arg;
if (dw) {
/* max is number of entries; the range of n is 0 - max-1 */
PR_ASSERT(dw->n <= dw->max);
PR_ASSERT(dw->list);
PR_ASSERT(data);
/* this strdup is free'd by free_filelist */
dw->list[dw->n++] = slapi_ch_smprintf("%s/%s", dw->dirname, data);
return 0;
}
return -1;
}
static void
free_string(caddr_t data)
{
slapi_ch_free((void **)&data);
}
static int
file_is_type_x(const char *dirname, const char *filename, PRFileType x)
{
struct PRFileInfo inf;
int status = 0;
char *fullpath = slapi_ch_smprintf("%s/%s", dirname, filename);
if (PR_SUCCESS == PR_GetFileInfo(fullpath, &inf) &&
inf.type == x)
status = 1;
slapi_ch_free((void **)&fullpath);
return status;
}
/* return true if the given path and file corresponds to a directory */
static int
is_a_dir(const char *dirname, const char *filename)
{
return file_is_type_x(dirname, filename, PR_FILE_DIRECTORY);
}
/* return true if the given path and file corresponds to a regular file */
static int
is_a_file(const char *dirname, const char *filename)
{
return file_is_type_x(dirname, filename, PR_FILE_FILE);
}
static int
matches(const char *filename, const char *pattern)
{
int match = 0;
char *s = 0;
if (!pattern)
return 1; /* null pattern matches everything */
slapd_re_lock();
s = slapd_re_comp((char *)pattern);
if (!s)
match = slapd_re_exec((char *)filename);
slapd_re_unlock();
return match;
}
/**
* getfilelist will return a list of all files and directories in the
* given directory matching the given pattern. If dirname is NULL, the
* current directory "." will be used. If the pattern is NULL, all files
* and directories will be returned. The additional integer arguments
* control which files and directories are selected. The default value
* for all of them is 0, which will not return hidden files (e.g. files
* beginning with . on unix), but will return both files and directories
* If nofiles is non-zero, only directory names will be returned. If
* nodirs is non-zero, only filenames will be returned.
* The pattern is a grep style regular expression, not a shell or command
* interpreter style regular expression. For example, to get all files ending
* in .ldif, use ".*\\.ldif" instead of "*.ldif"
* The return value is a NULL terminated array of names.
*/
char **
get_filelist(
const char *dirname, /* directory path; if NULL, uses "." */
const char *pattern, /* grep (not shell!) file pattern regex */
int hiddenfiles, /* if true, return hidden files and directories too */
int nofiles, /* if true, do not return files */
int nodirs /* if true, do not return directories */
)
{
Avlnode *filetree = 0;
PRDir *dirptr = 0;
PRDirEntry *dirent = 0;
PRDirFlags dirflags = PR_SKIP_BOTH & PR_SKIP_HIDDEN;
char **retval = 0;
int num = 0;
struct data_wrapper dw;
if (!dirname)
dirname = ".";
if (hiddenfiles)
dirflags = PR_SKIP_BOTH;
if (!(dirptr = PR_OpenDir(dirname))) {
return NULL;
}
/* read the directory entries into an ascii sorted avl tree */
for (dirent = PR_ReadDir(dirptr, dirflags); dirent ;
dirent = PR_ReadDir(dirptr, dirflags)) {
if (nofiles && is_a_file(dirname, dirent->name))
continue;
if (nodirs && is_a_dir(dirname, dirent->name))
continue;
if (matches(dirent->name, pattern)) {
/* this strdup is free'd by free_string */
char *newone = slapi_ch_strdup(dirent->name);
avl_insert(&filetree, newone, strcmp, 0);
num++;
}
}
PR_CloseDir(dirptr);
/* allocate space for the list */
retval = (char **)slapi_ch_calloc(num+1, sizeof(char *));
/* traverse the avl tree and copy the filenames into the list */
dw.list = retval;
dw.n = 0;
dw.max = num;
dw.dirname = dirname;
(void)avl_apply(filetree, add_file_to_list, &dw, -1, AVL_INORDER);
retval[num] = 0; /* set last entry to null */
/* delete the avl tree and all its data */
avl_free(filetree, free_string);
return retval;
}
void
free_filelist(char **filelist)
{
int ii;
for (ii = 0; filelist && filelist[ii]; ++ii)
slapi_ch_free((void **)&filelist[ii]);
slapi_ch_free((void **)&filelist);
}
/**
* Returns a list of files in order of "priority" where priority is defined
* as:
* The first two characters in the filename are digits representing a
* number from 00 to 99. The lower the number the higher the
* priority. For example, 00 is in the list before 01, and 99 is the
* last item in the list. The ordering of files with the same
* priority cannot be guaranteed. The pattern is the grep style
* regular expression of filenames to match which is applied to the
* end of the string. If you are a Solaris person, you may recognize
* this as the rules for init level initialization using shell scripts
* under /etc/rcX.d/
*/
char **
get_priority_filelist(const char *directory, const char *pattern)
{
char *basepattern = "^[0-9][0-9]";
char *genericpattern = ".*"; /* used if pattern is null */
char *bigpattern = 0;
char **retval = 0;
if (!pattern)
pattern = genericpattern;
bigpattern = slapi_ch_smprintf("%s%s", basepattern, pattern);
retval = get_filelist(directory, bigpattern, 0, 0, 1);
slapi_ch_free((void **)&bigpattern);
return retval;
}
|
