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
|
#include <assert.h>
#include <ctype.h>
#include <dirent.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "entry.h"
#include "group.h"
#define BUF_LEN 1024 //maybe move this line to the header file
#define MAX_ARGS 5
//public
void cfg_interp();
void check_line(char *buffer);
//private
void handle_fname(char *path, char *group);
int search_ch(char *str, char c);
int wild_cmp(char *wild, char *literal);
void cfg_interp(){
FILE *fp;
char buffer[BUF_LEN];
GROUP **g;
ENTRY **e;
int count;
int e_count;
int i;
int j;
//TODO have this check in certain locations for a config file, give error message if "config" does not exist
fp = fopen("config", "r");
assert(fp != NULL);
//Read each line of "config"
while(fgets(buffer, BUF_LEN, fp)){
check_line(buffer);
}
/*
//DEBUG: test to see if the list was added to properly
g = get_groups();
count = get_gcount();
for(i = 0; i < count; i++){
printf("Looking at group %s\n", get_gname(g[i]));
e_count = get_ecount(g[i]);
e = get_entries(get_ghead(g[i]), e_count);
for(j = 0; j < e_count; j++){
printf("\t%s\n", get_ename(e[j]));
}
}
//END DEBUG
*/
fclose(fp);
return;
}
void check_line(char *buffer){
char *delims = " \t\n";
char *tok = strtok(buffer, delims);
char *args[MAX_ARGS];
int i;
//initialize args to NULL
for(i = 0; i < MAX_ARGS; i++){
args[i] = NULL;
}
i = 0;
//record all arguments in the line
while(tok != NULL){
if(i >= MAX_ARGS){
printf("Error: too many arguments\n");
return;
}
args[i] = tok;
tok = strtok(NULL, delims);
i++;
}
//add entry(ies) to a group: first arg is the file(s), second arg is the group to add to
//TODO add potential dash functions
//TODO account for spaces in file name
//TODO add support for "-R" recursive adding
//TODO add sorting functionality
if(!(strcmp(args[0], "add"))) handle_fname(args[1], args[2]);
//create a new group
if(!(strcmp(args[0], "addGroup"))) group_add(args[1], NULL);
return;
}
//still needs polish in regards to wildcards, at the moment only works for something like "/home/john/Videos/*", won't work for "/home/john/Videos/*mp4"
void handle_fname(char *path, char *group){
ENTRY *new;
char *search; //pointer for traversing path
char path_cpy[BUF_LEN];
char arg_cpy[BUF_LEN];
int plen = strlen(path);
char *dirname;
DIR *dp;
struct dirent *fname;
int i;
if(path == NULL || group == NULL){
printf("Error: too few arguments for \"add\"\n");
return;
}
//file is not recognized, perhaps it has a wildcard?
//TODO finish rewriting a more robust wildcard thingy, still doesn't work using regex
if(access(path, F_OK) == -1){
i = search_ch(path, '*');
if(i > -1){
//look for a directory
while(path[i] != '/' && (i >= 0)){
i--;
}
dirname = path;
strcpy(arg_cpy, path);
dirname[i+1] = '\0';
dp = opendir(dirname);
//the directory is real
if(dp != NULL){
while(fname = readdir(dp)){
path_cpy[0] = '\0';
strcat(path_cpy, dirname);
strcat(path_cpy, fname->d_name);
//check if path is a file (and not a directory/symlink/etc.) and regex matches
if(fname->d_type == DT_REG && !(wild_cmp(&arg_cpy[i+1], fname->d_name))){
new = create_entry(path_cpy, path_cpy);
if(new != NULL) group_add(group, new);
}
}
closedir(dp);
}
//directory is not real, report error to the user
else printf("Error: \"%s\" bad path\n", dirname);
}
}
//file name is okay
else{
new = create_entry(path, path);
if(new != NULL){
group_add(group, new);
}
}
return;
}
int search_ch(char *str, char c){
int i = 0;
while(str[i] != '\0'){
if(str[i] == c) return i;
i++;
}
return -1;
}
//return 0 if match, 1 if not
//TODO only supports one wildcard per entry
int wild_cmp(char *wild, char *literal){
int i;
while(*wild != '\0'){
//traverse until wildcard
if(*wild != '*'){
if(*wild != *literal) return 1;
wild++;
literal++;
}
//found wildcard, find the end of both names and comapre from the back
else{
i = 0;
wild++;
while(*wild != '\0'){
i++;
wild++;
}
while(*literal != '\0'){
literal++;
}
while(i > 0){
wild--;
literal--;
if(*wild != *literal) return 1;
i--;
}
return 0;
}
}
return 0;
}
|
