~sircmpwn/apk-tools

apk-tools/src/dot.c -rw-r--r-- 4.1 KiB
52f1c8b9Drew DeVault Add riscv64 to apk_defines.h 3 years ago
                                                                                
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
/* dot.c - Alpine Package Keeper (APK)
 *
 * Copyright (C) 2008-2011 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 <fnmatch.h>

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

#define S_EVALUATED	-1
#define S_EVALUATING	-2

struct dot_ctx {
	int not_empty : 1;
	int errors_only : 1;
	int installed_only : 1;
};

static int option_parse_applet(void *pctx, struct apk_db_options *dbopts, int optch, const char *optarg)
{
	struct dot_ctx *ctx = (struct dot_ctx *) pctx;

	switch (optch) {
	case 0x10000:
		ctx->errors_only = 1;
		break;
	case 0x10001:
		ctx->installed_only = 1;
		dbopts->open_flags &= ~APK_OPENF_NO_INSTALLED;
		break;
	default:
		return -ENOTSUP;
	}
	return 0;
}

static const struct apk_option options_applet[] = {
	{ 0x10000,	"errors",	"Output only parts of the graph which are considered "
					"erroneous: e.g. cycles and missing packages" },
	{ 0x10001,	"installed",	"Consider only installed packages" },
};

static const struct apk_option_group optgroup_applet = {
	.name = "Dot",
	.options = options_applet,
	.num_options = ARRAY_SIZE(options_applet),
	.parse = option_parse_applet,
};

static void start_graph(struct dot_ctx *ctx)
{
	if (ctx->not_empty)
		return;
	ctx->not_empty = 1;

	printf( "digraph \"apkindex\" {\n"
		"  rankdir=LR;\n"
		"  node [shape=box];\n");
}

static void dump_name(struct dot_ctx *ctx, struct apk_name *name)
{
	if (name->state_int)
		return;
	name->state_int = 1;

	if (name->providers->num == 0) {
		start_graph(ctx);
		printf("  \"%s\" [style=dashed, color=red, fontcolor=red, shape=octagon];\n",
			name->name);
	}
}

static int dump_pkg(struct dot_ctx *ctx, struct apk_package *pkg)
{
	struct apk_dependency *dep;
	struct apk_provider *p0;
	int r, ret = 0;

	if (ctx->installed_only && pkg->ipkg == NULL)
		return 0;

	if (pkg->state_int == S_EVALUATED)
		return 0;

	if (pkg->state_int <= S_EVALUATING) {
		pkg->state_int--;
		return 1;
	}

	pkg->state_int = S_EVALUATING;
	foreach_array_item(dep, pkg->depends) {
		struct apk_name *name = dep->name;

		dump_name(ctx, name);

		if (name->providers->num == 0) {
			printf("  \"" PKG_VER_FMT "\" -> \"%s\" [color=red];\n",
				PKG_VER_PRINTF(pkg), name->name);
			continue;
		}

		foreach_array_item(p0, name->providers) {
			if (ctx->installed_only && p0->pkg->ipkg == NULL)
				continue;
			if (!apk_dep_is_provided(dep, p0))
				continue;

			r = dump_pkg(ctx, p0->pkg);
			ret += r;
			if (r || (!ctx->errors_only)) {
				start_graph(ctx);

				printf("  \"" PKG_VER_FMT "\" -> \"" PKG_VER_FMT "\"[",
					PKG_VER_PRINTF(pkg),
					PKG_VER_PRINTF(p0->pkg));
				if (r)
					printf("color=red,");
				if (p0->pkg->name != dep->name)
					printf("arrowhead=inv,label=\"%s\",", dep->name->name);
				printf("];\n");
			}
		}
	}
	ret -= S_EVALUATING - pkg->state_int;
	pkg->state_int = S_EVALUATED;

	return ret;
}

static int foreach_pkg(apk_hash_item item, void *ctx)
{
	dump_pkg((struct dot_ctx *) ctx, (struct apk_package *) item);
	return 0;
}

static int dot_main(void *pctx, struct apk_database *db, struct apk_string_array *args)
{
	struct dot_ctx *ctx = (struct dot_ctx *) pctx;
	struct apk_provider *p;
	char **parg;

	if (args->num) {
		foreach_array_item(parg, args) {
			struct apk_name *name = apk_db_get_name(db, APK_BLOB_STR(*parg));
			if (!name)
				continue;
			foreach_array_item(p, name->providers)
				dump_pkg(ctx, p->pkg);
		}
	} else {
		apk_hash_foreach(&db->available.packages, foreach_pkg, pctx);
	}

	if (!ctx->not_empty)
		return 1;

	printf("}\n");
	return 0;
}

static struct apk_applet apk_dot = {
	.name = "dot",
	.help = "Generate graphviz graphs",
	.arguments = "PKGMASK...",
	.open_flags = APK_OPENF_READ | APK_OPENF_NO_STATE,
	.command_groups = APK_COMMAND_GROUP_QUERY,
	.context_size = sizeof(struct dot_ctx),
	.optgroups = { &optgroup_global, &optgroup_applet },
	.main = dot_main,
};

APK_DEFINE_APPLET(apk_dot);