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
|
//
// Created by jhunk on 12/16/19.
//
#include "spm.h"
int exists(const char *filename) {
return access(filename, F_OK);
}
int dep_seen(Dependencies **deps, const char *name) {
if (!deps) {
return -1;
}
for (int i = 0; i != (*deps)->records; i++) {
if (strstr((*deps)->list[i], name) != NULL) {
return 1;
}
}
return 0;
}
int dep_init(Dependencies **deps) {
(*deps) = (Dependencies *)calloc(1, sizeof(Dependencies));
(*deps)->__size = 2;
(*deps)->records = 0;
(*deps)->list = (char **)calloc((*deps)->__size, sizeof(char *));
if (!(*deps)->list) {
return -1;
}
return 0;
}
void dep_free(Dependencies **deps) {
if ((*deps) != NULL) {
return;
}
for (int i = 0; i < (*deps)->__size; i++) {
if ((*deps)->list[i] != NULL) {
free((*deps)->list[i]);
}
}
free((*deps));
}
int dep_append(Dependencies **deps, char *_name) {
char *name = NULL;
char *bname = NULL;
if (!(*deps)) {
return -1;
}
name = find_package(_name);
if (!name) {
perror(_name);
fprintf(SYSERROR);
return -1;
}
bname = basename(name);
if (!bname) {
perror(name);
fprintf(SYSERROR);
return -1;
}
(*deps)->__size++;
(*deps)->list = (char **)realloc((*deps)->list, sizeof(char *) * (*deps)->__size);
if (!(*deps)->list) {
free(name);
return -1;
}
(*deps)->list[(*deps)->records] = (char *)calloc(strlen(bname) + 1, sizeof(char));
if (!(*deps)->list[(*deps)->records]) {
free(name);
return -1;
}
strcpy((*deps)->list[(*deps)->records], bname);
(*deps)->records++;
free(name);
return 0;
}
int dep_solve(Dependencies **deps, const char *filename) {
if (!(*deps)) {
return -1;
}
if (exists(filename) != 0) {
return -1;
}
FILE *fp = fopen(filename, "r");
if (!fp) {
perror(filename);
return -1;
}
char data[BUFSIZ];
memset(data, '\0', sizeof(data));
char *line = data;
int line_count = 0;
while (fgets(line, BUFSIZ, fp) != NULL) {
size_t line_length = strlen(line);
if (line_length > 1 && strstr(line, "\r\n")) {
line[line_length - 2] = '\0';
}
if (line_length > 1 && line[line_length - 1] == '\n') {
line[line_length - 1] = '\0';
}
if (strcmp(line, "") == 0) {
continue;
}
line_count++;
if (dep_seen(deps, line) > 0) {
// Already seen this dependency. Skip it.
continue;
}
else {
// Have not seen this dependency before
if (dep_append(deps, line) == 0) {
dep_solve(deps, line);
}
}
}
fclose(fp);
return line_count;
}
int dep_all(Dependencies **deps, const char *_package) {
static int next = 0;
char *package = NULL;
char depfile[PATH_MAX];
char template[PATH_MAX];
char suffix[PATH_MAX] = "spm_depends_all_XXXXXX";
// Verify the requested package pattern exists
package = find_package(_package);
if (!package) {
perror(_package);
fprintf(SYSERROR);
return -1;
}
// Create a new temporary directory and extract the requested package into it
sprintf(template, "%s%c%s", TMP_DIR, DIRSEP, suffix);
char *tmpdir = mkdtemp(template);
if (!tmpdir) {
perror(template);
fprintf(SYSERROR);
return -1;
}
if (tar_extract_file(package, ".SPM_DEPENDS", tmpdir) < 0) {
perror(package);
fprintf(SYSERROR);
return -1;
}
// Scan depencency tree
sprintf(depfile, "%s%c%s", tmpdir, DIRSEP, ".SPM_DEPENDS");
int resolved = dep_solve(deps, depfile);
// NOTE:
// 1. `resolved` is the number of dependencies for the package we're scanning
// 2. `next` permits us to converge on `resolved`, otherwise `i` would reset to `0` each time `dep_all` is called
for (int i = next; i < resolved; i++) {
next++;
if (dep_seen(deps, (*deps)->list[i])) {
dep_all(deps, (*deps)->list[i]);
}
}
// Remove temporary data
unlink(depfile);
unlink(tmpdir);
return 0;
}
void dep_show(Dependencies **deps) {
if ((*deps) == NULL) {
return;
}
for (int i = 0; i < (*deps)->records; i++) {
printf("%d: %s\n", i, (*deps)->list[i]);
}
}
|
