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/* del.c - Alpine Package Keeper (APK)
*
* Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
* 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 "apk_applet.h"
#include "apk_database.h"
#include "apk_print.h"
#include "apk_solver.h"
enum {
INSTALLED_PACKAGES,
MARKED_PACKAGES,
};
struct del_ctx {
int recursive_delete : 1;
struct apk_dependency_array *world;
};
static int del_parse(void *pctx, struct apk_db_options *db,
int optch, int optindex, const char *optarg)
{
struct del_ctx *ctx = (struct del_ctx *) pctx;
switch (optch) {
case 'r':
ctx->recursive_delete = 1;
break;
default:
return -1;
}
return 0;
}
static void foreach_package_reverse_dependency2(
struct apk_package *pkg, struct apk_name_array *rdepends,
void (*cb)(struct apk_package *rdepend, void *ctx), void *ctx)
{
int i, j, k;
if (pkg == NULL)
return;
for (i = 0; i < rdepends->num; i++) {
struct apk_name *name0 = rdepends->item[i];
for (j = 0; j < name0->providers->num; j++) {
struct apk_package *pkg0 = name0->providers->item[j].pkg;
if (pkg0->ipkg == NULL)
continue;
for (k = 0; k < pkg0->depends->num; k++) {
struct apk_dependency *dep = &pkg0->depends->item[k];
if (apk_dep_is_materialized_or_provided(dep, pkg))
break;
}
if (k >= pkg0->depends->num)
continue;
cb(pkg0, ctx);
}
}
}
static void foreach_package_reverse_dependency(
struct apk_package *pkg,
void (*cb)(struct apk_package *rdepend, void *ctx), void *ctx)
{
int i;
foreach_package_reverse_dependency2(pkg, pkg->name->rdepends, cb, ctx);
for (i = 0; i < pkg->provides->num; i++)
foreach_package_reverse_dependency2(pkg, pkg->provides->item[i].name->rdepends, cb, ctx);
}
static void foreach_reverse_dependency(
struct apk_name *name, int mode,
void (*cb)(struct apk_package *rdepend, void *ctx), void *ctx)
{
int i;
for (i = 0; i < name->providers->num; i++) {
struct apk_package *pkg0 = name->providers->item[i].pkg;
if (mode == INSTALLED_PACKAGES && pkg0->ipkg == NULL)
continue;
if (mode == MARKED_PACKAGES && pkg0->state_int == 0)
continue;
foreach_package_reverse_dependency(pkg0, cb, ctx);
}
}
struct not_deleted_ctx {
struct apk_indent indent;
struct apk_package *pkg;
int header;
};
static void print_not_deleted_message(struct apk_package *pkg,
void *pctx)
{
struct not_deleted_ctx *ctx = (struct not_deleted_ctx *) pctx;
if (pkg == NULL)
return;
if (pkg->state_ptr == ctx->pkg)
return;
pkg->state_ptr = ctx->pkg;
if (!ctx->header) {
apk_message("World updated, but the following packages are not removed due to:");
ctx->header = 1;
}
if (!ctx->indent.indent) {
ctx->indent.x = printf(" %s:", ctx->pkg->name->name);
ctx->indent.indent = ctx->indent.x + 1;
}
apk_print_indented(&ctx->indent, APK_BLOB_STR(pkg->name->name));
foreach_package_reverse_dependency(pkg, print_not_deleted_message, pctx);
}
static void delete_from_world(struct apk_package *pkg, void *pctx)
{
struct del_ctx *ctx = (struct del_ctx *) pctx;
apk_deps_del(&ctx->world, pkg->name);
foreach_package_reverse_dependency(pkg, delete_from_world, pctx);
}
static int del_main(void *pctx, struct apk_database *db, int argc, char **argv)
{
struct del_ctx *ctx = (struct del_ctx *) pctx;
struct apk_name **name;
struct apk_changeset changeset = {};
struct not_deleted_ctx ndctx = {};
int i, j, r = 0;
apk_dependency_array_copy(&ctx->world, db->world);
name = alloca(argc * sizeof(struct apk_name*));
for (i = 0; i < argc; i++) {
name[i] = apk_db_get_name(db, APK_BLOB_STR(argv[i]));
apk_deps_del(&ctx->world, name[i]);
if (ctx->recursive_delete)
foreach_reverse_dependency(
name[i], INSTALLED_PACKAGES,
delete_from_world, ctx);
}
r = apk_solver_solve(db, 0, ctx->world, &changeset);
if (r == 0 || (apk_flags & APK_FORCE)) {
/* check for non-deleted package names */
for (i = 0; i < changeset.changes->num; i++) {
struct apk_package *pkg = changeset.changes->item[i].new_pkg;
if (pkg == NULL)
continue;
pkg->name->state_ptr = pkg;
for (j = 0; j < pkg->provides->num; j++)
pkg->provides->item[j].name->state_ptr = pkg;
pkg->state_int = 1;
}
for (i = 0; i < argc; i++) {
ndctx.pkg = name[i]->state_ptr;
ndctx.indent.indent = 0;
foreach_reverse_dependency(
name[i], MARKED_PACKAGES,
print_not_deleted_message, &ndctx);
if (ndctx.indent.indent)
printf("\n");
}
if (ndctx.header)
printf("\n");
apk_solver_commit_changeset(db, &changeset, ctx->world);
r = 0;
} else {
apk_solver_print_errors(db, &changeset, ctx->world);
}
apk_dependency_array_free(&ctx->world);
return r;
}
static struct apk_option del_options[] = {
{ 'r', "rdepends", "Recursively delete all top-level reverse "
"dependencies too." },
};
static struct apk_applet apk_del = {
.name = "del",
.help = "Remove PACKAGEs from the main dependencies and uninstall them.",
.arguments = "PACKAGE...",
.open_flags = APK_OPENF_WRITE,
.context_size = sizeof(struct del_ctx),
.num_options = ARRAY_SIZE(del_options),
.options = del_options,
.parse = del_parse,
.main = del_main,
};
APK_DEFINE_APPLET(apk_del);
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