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/* 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 dot_parse(void *pctx, struct apk_db_options *dbopts,
int optch, int optindex, 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 -1;
}
return 0;
}
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_option dot_options[] = {
{ 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 struct apk_applet apk_dot = {
.name = "dot",
.help = "Generate graphviz graphs",
.arguments = "PKGMASK...",
.open_flags = APK_OPENF_READ | APK_OPENF_NO_STATE,
.context_size = sizeof(struct dot_ctx),
.num_options = ARRAY_SIZE(dot_options),
.options = dot_options,
.parse = dot_parse,
.main = dot_main,
};
APK_DEFINE_APPLET(apk_dot);
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