Commit | Line | Data |
---|---|---|
25903407 ACM |
1 | /* |
2 | * (c) 2009 Arnaldo Carvalho de Melo <acme@redhat.com> | |
3 | * | |
4 | * Licensed under the GPLv2. | |
5 | */ | |
6 | ||
7 | #include "strlist.h" | |
8 | #include <errno.h> | |
9 | #include <stdio.h> | |
10 | #include <stdlib.h> | |
11 | #include <string.h> | |
12 | ||
ee8dd3ca DA |
13 | static |
14 | struct rb_node *strlist__node_new(struct rblist *rblist, const void *entry) | |
25903407 | 15 | { |
ee8dd3ca DA |
16 | const char *s = entry; |
17 | struct rb_node *rc = NULL; | |
18 | struct strlist *strlist = container_of(rblist, struct strlist, rblist); | |
19 | struct str_node *snode = malloc(sizeof(*snode)); | |
25903407 | 20 | |
ee8dd3ca DA |
21 | if (snode != NULL) { |
22 | if (strlist->dupstr) { | |
25903407 ACM |
23 | s = strdup(s); |
24 | if (s == NULL) | |
25 | goto out_delete; | |
26 | } | |
ee8dd3ca DA |
27 | snode->s = s; |
28 | rc = &snode->rb_node; | |
25903407 ACM |
29 | } |
30 | ||
ee8dd3ca | 31 | return rc; |
25903407 ACM |
32 | |
33 | out_delete: | |
ee8dd3ca | 34 | free(snode); |
25903407 ACM |
35 | return NULL; |
36 | } | |
37 | ||
38 | static void str_node__delete(struct str_node *self, bool dupstr) | |
39 | { | |
40 | if (dupstr) | |
41 | free((void *)self->s); | |
42 | free(self); | |
43 | } | |
44 | ||
ee8dd3ca DA |
45 | static |
46 | void strlist__node_delete(struct rblist *rblist, struct rb_node *rb_node) | |
25903407 | 47 | { |
ee8dd3ca DA |
48 | struct strlist *slist = container_of(rblist, struct strlist, rblist); |
49 | struct str_node *snode = container_of(rb_node, struct str_node, rb_node); | |
25903407 | 50 | |
ee8dd3ca DA |
51 | str_node__delete(snode, slist->dupstr); |
52 | } | |
25903407 | 53 | |
ee8dd3ca DA |
54 | static int strlist__node_cmp(struct rb_node *rb_node, const void *entry) |
55 | { | |
56 | const char *str = entry; | |
57 | struct str_node *snode = container_of(rb_node, struct str_node, rb_node); | |
58 | ||
59 | return strcmp(snode->s, str); | |
60 | } | |
25903407 | 61 | |
ee8dd3ca DA |
62 | int strlist__add(struct strlist *self, const char *new_entry) |
63 | { | |
64 | return rblist__add_node(&self->rblist, new_entry); | |
25903407 ACM |
65 | } |
66 | ||
67 | int strlist__load(struct strlist *self, const char *filename) | |
68 | { | |
69 | char entry[1024]; | |
70 | int err; | |
71 | FILE *fp = fopen(filename, "r"); | |
72 | ||
73 | if (fp == NULL) | |
74 | return errno; | |
75 | ||
76 | while (fgets(entry, sizeof(entry), fp) != NULL) { | |
77 | const size_t len = strlen(entry); | |
78 | ||
79 | if (len == 0) | |
80 | continue; | |
81 | entry[len - 1] = '\0'; | |
82 | ||
83 | err = strlist__add(self, entry); | |
84 | if (err != 0) | |
85 | goto out; | |
86 | } | |
87 | ||
88 | err = 0; | |
89 | out: | |
90 | fclose(fp); | |
91 | return err; | |
92 | } | |
93 | ||
ee8dd3ca | 94 | void strlist__remove(struct strlist *slist, struct str_node *snode) |
25903407 | 95 | { |
ee8dd3ca | 96 | str_node__delete(snode, slist->dupstr); |
25903407 ACM |
97 | } |
98 | ||
ee8dd3ca | 99 | struct str_node *strlist__find(struct strlist *slist, const char *entry) |
25903407 | 100 | { |
ee8dd3ca DA |
101 | struct str_node *snode = NULL; |
102 | struct rb_node *rb_node = rblist__find(&slist->rblist, entry); | |
25903407 | 103 | |
ee8dd3ca DA |
104 | if (rb_node) |
105 | snode = container_of(rb_node, struct str_node, rb_node); | |
106 | ||
107 | return snode; | |
25903407 ACM |
108 | } |
109 | ||
110 | static int strlist__parse_list_entry(struct strlist *self, const char *s) | |
111 | { | |
112 | if (strncmp(s, "file://", 7) == 0) | |
113 | return strlist__load(self, s + 7); | |
114 | ||
115 | return strlist__add(self, s); | |
116 | } | |
117 | ||
118 | int strlist__parse_list(struct strlist *self, const char *s) | |
119 | { | |
120 | char *sep; | |
121 | int err; | |
122 | ||
123 | while ((sep = strchr(s, ',')) != NULL) { | |
124 | *sep = '\0'; | |
125 | err = strlist__parse_list_entry(self, s); | |
126 | *sep = ','; | |
127 | if (err != 0) | |
128 | return err; | |
129 | s = sep + 1; | |
130 | } | |
131 | ||
132 | return *s ? strlist__parse_list_entry(self, s) : 0; | |
133 | } | |
134 | ||
135 | struct strlist *strlist__new(bool dupstr, const char *slist) | |
136 | { | |
137 | struct strlist *self = malloc(sizeof(*self)); | |
138 | ||
139 | if (self != NULL) { | |
ee8dd3ca DA |
140 | rblist__init(&self->rblist); |
141 | self->rblist.node_cmp = strlist__node_cmp; | |
142 | self->rblist.node_new = strlist__node_new; | |
143 | self->rblist.node_delete = strlist__node_delete; | |
144 | ||
27d0fd41 | 145 | self->dupstr = dupstr; |
25903407 ACM |
146 | if (slist && strlist__parse_list(self, slist) != 0) |
147 | goto out_error; | |
148 | } | |
149 | ||
150 | return self; | |
151 | out_error: | |
152 | free(self); | |
153 | return NULL; | |
154 | } | |
155 | ||
156 | void strlist__delete(struct strlist *self) | |
157 | { | |
ee8dd3ca DA |
158 | if (self != NULL) |
159 | rblist__delete(&self->rblist); | |
25903407 | 160 | } |
27d0fd41 | 161 | |
ee8dd3ca | 162 | struct str_node *strlist__entry(const struct strlist *slist, unsigned int idx) |
27d0fd41 | 163 | { |
ee8dd3ca DA |
164 | struct str_node *snode = NULL; |
165 | struct rb_node *rb_node; | |
27d0fd41 | 166 | |
ee8dd3ca DA |
167 | rb_node = rblist__entry(&slist->rblist, idx); |
168 | if (rb_node) | |
169 | snode = container_of(rb_node, struct str_node, rb_node); | |
27d0fd41 | 170 | |
ee8dd3ca | 171 | return snode; |
27d0fd41 | 172 | } |