aboutsummaryrefslogtreecommitdiffstats
path: root/src/index.c
blob: b938984d0fccba0205e22f37f9687316d426d7b4 (plain) (blame)
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
/* index.c - Alpine Package Keeper (APK)
 *
 * Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
 * Copyright (C) 2008 Timo Teräs <timo.teras@iki.fi>
 * All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation. See http://www.gnu.org/ for details.
 */

#include <stdio.h>
#include <unistd.h>

#include "apk_applet.h"
#include "apk_database.h"

struct counts {
	int unsatisfied;
};

struct index_ctx {
	const char *index_file;
	int delete;
};

static int index_parse(void *ctx, int optch, int optindex, const char *optarg)
{
	struct index_ctx *ictx = (struct index_ctx *) ctx;

	switch (optch) {
	case 'd':
		ictx->index_file = optarg;
		ictx->delete = 1;
		break;
	default:
		return -1;
	}
	return 0;
}

static int index_read_file(struct apk_database *db, struct index_ctx *ictx)
{
	struct apk_bstream *bs;
	int r;
	if (ictx->index_file == NULL)
		return 0;
	bs = apk_bstream_from_istream(apk_bstream_gunzip(apk_bstream_from_url(ictx->index_file), 1));
	if (bs == NULL)
		return -1;
	r = apk_db_index_read(db, bs, -1);
	bs->close(bs, NULL);
	return r;
}

static int warn_if_no_providers(apk_hash_item item, void *ctx)
{
	struct counts *counts = (struct counts *) ctx;
	struct apk_name *name = (struct apk_name *) item;

	if (name->pkgs == NULL) {
		if (++counts->unsatisfied < 10) {
			apk_warning("No provider for dependency '%s'",
				    name->name);
		} else if (counts->unsatisfied == 10) {
			apk_warning("Too many unsatisfiable dependencies, "
				    "not reporting the rest.");
		}
	}

	return 0;
}

static int index_main(void *ctx, int argc, char **argv)
{
	struct apk_database db;
	struct counts counts = {0};
	struct apk_ostream *os;
	int total, i, j;
	struct index_ctx *ictx = (struct index_ctx *) ctx;

	apk_db_open(&db, NULL, APK_OPENF_READ);
	index_read_file(&db, ictx);

	for (i = 0; i < argc; i++) {
		if (ictx->delete) {
			struct apk_name *name;
			name = apk_db_query_name(&db, APK_BLOB_STR(argv[i]));
			if (name == NULL || name->pkgs == NULL)
				continue;
			/* apk_db_index_write() will only print the pkgs
			   where repos == 0. We prevent to write the given
			   packages by setting repos to non-zero */
			for (j = 0; j < name->pkgs->num; j++)
				name->pkgs->item[j]->repos = -1;
		} else
			apk_db_pkg_add_file(&db, argv[i]);
	}

	os = apk_ostream_to_fd(STDOUT_FILENO);
	total = apk_db_index_write(&db, os);
	os->close(os);

	apk_hash_foreach(&db.available.names, warn_if_no_providers, &counts);
	apk_db_close(&db);

	if (counts.unsatisfied != 0)
		apk_warning("Total of %d unsatisfiable package "
			    "names. Your repository maybe broken.",
			    counts.unsatisfied);
	apk_message("Index has %d packages", total);

	return 0;
}

static struct apk_option index_options[] = {
	{ 'd', "delete",
	  "Read existing INDEXFILE and delete the listed FILEs from it",
	  required_argument, "INDEXFILE" },
};

static struct apk_applet apk_index = {
	.name = "index",
	.help = "Create repository index file from FILEs.",
	.arguments = "FILE...",
	.context_size = sizeof(struct index_ctx),
	.num_options = ARRAY_SIZE(index_options),
	.options = index_options,
	.parse = index_parse,
	.main = index_main,
};

APK_DEFINE_APPLET(apk_index);