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/* test.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 <errno.h>
#include <fcntl.h>
#include "apk_applet.h"
#include "apk_database.h"
#include "apk_solver.h"
#include "apk_io.h"
#include "apk_print.h"
struct test_ctx {
const char *installed_db;
struct apk_string_array *repos;
unsigned short solver_flags;
};
static int test_parse(void *pctx, struct apk_db_options *dbopts,
int optch, int optindex, const char *optarg)
{
struct test_ctx *ctx = (struct test_ctx *) pctx;
switch (optch) {
case 0x10000:
ctx->installed_db = optarg;
break;
case 0x10001:
if (ctx->repos == NULL)
apk_string_array_init(&ctx->repos);
*apk_string_array_add(&ctx->repos) = (char*) optarg;
break;
case 'u':
ctx->solver_flags |= APK_SOLVERF_UPGRADE;
break;
case 'a':
ctx->solver_flags |= APK_SOLVERF_AVAILABLE;
break;
default:
return -1;
}
return 0;
}
static inline void print_change(struct apk_package *oldpkg,
struct apk_package *newpkg)
{
const char *msg = NULL;
struct apk_name *name;
int r;
if (oldpkg != NULL)
name = oldpkg->name;
else
name = newpkg->name;
if (oldpkg == NULL) {
apk_message("Installing %s (" BLOB_FMT ")",
name->name,
BLOB_PRINTF(*newpkg->version));
} else if (newpkg == NULL) {
apk_message("Purging %s (" BLOB_FMT ")",
name->name,
BLOB_PRINTF(*oldpkg->version));
} else {
r = apk_pkg_version_compare(newpkg, oldpkg);
switch (r) {
case APK_VERSION_LESS:
msg = "Downgrading";
break;
case APK_VERSION_EQUAL:
if (newpkg == oldpkg)
msg = "Re-installing";
else
msg = "Replacing";
break;
case APK_VERSION_GREATER:
msg = "Upgrading";
break;
}
apk_message("%s %s (" BLOB_FMT " -> " BLOB_FMT ")",
msg, name->name,
BLOB_PRINTF(*oldpkg->version),
BLOB_PRINTF(*newpkg->version));
}
}
static void print_dep_errors(char *label, struct apk_dependency_array *deps)
{
int i, print_label = 1;
char buf[256];
apk_blob_t p = APK_BLOB_BUF(buf);
for (i = 0; i < deps->num; i++) {
struct apk_dependency *dep = &deps->item[i];
struct apk_package *pkg = dep->name->state_ptr;
if (pkg != NULL && apk_dep_is_satisfied(dep, pkg))
continue;
if (print_label) {
print_label = 0;
printf("%s: ", label);
} else {
printf(" ");
}
apk_blob_push_dep(&p, dep);
p = apk_blob_pushed(APK_BLOB_BUF(buf), p);
fwrite(p.ptr, p.len, 1, stdout);
}
if (!print_label)
printf("\n");
}
static void print_errors_in_solution(struct apk_database *db, int unsatisfiable,
struct apk_package_array *solution)
{
int i;
printf("%d unsatisfiable dependencies (solution with %d names)\n",
unsatisfiable, solution->num);
for (i = 0; i < solution->num; i++) {
struct apk_package *pkg = solution->item[i];
pkg->name->state_ptr = pkg;
}
print_dep_errors("world", db->world);
for (i = 0; i < solution->num; i++) {
struct apk_package *pkg = solution->item[i];
char pkgtext[256];
snprintf(pkgtext, sizeof(pkgtext), PKG_VER_FMT, PKG_VER_PRINTF(solution->item[i]));
print_dep_errors(pkgtext, pkg->depends);
}
}
static int test_main(void *pctx, struct apk_database *db, int argc, char **argv)
{
struct test_ctx *ctx = (struct test_ctx *) pctx;
struct apk_bstream *bs;
struct apk_package_array *solution = NULL;
struct apk_changeset changeset = {};
int i, r;
if (argc != 1)
return -EINVAL;
/* load installed db */
if (ctx->installed_db != NULL) {
bs = apk_bstream_from_file(AT_FDCWD, ctx->installed_db);
if (bs != NULL) {
apk_db_index_read(db, bs, -1);
bs->close(bs, NULL);
}
}
/* load additional indexes */
if (ctx->repos) {
for (i = 0; i < ctx->repos->num; i++) {
bs = apk_bstream_from_file(AT_FDCWD, ctx->repos->item[i]);
if (bs != NULL) {
apk_db_index_read(db, bs, i);
bs->close(bs, NULL);
}
}
}
/* construct new world */
apk_deps_parse(db, &db->world, APK_BLOB_STR(argv[0]));
/* run solver */
r = apk_solver_solve(db, ctx->solver_flags, db->world, &solution, &changeset);
if (r == 0) {
/* dump changeset */
for (i = 0; i < changeset.changes->num; i++) {
struct apk_change *c = &changeset.changes->item[i];
print_change(c->oldpkg, c->newpkg);
}
} else { /* r >= 1*/
print_errors_in_solution(db, r, solution);
}
return 0;
}
static struct apk_option test_options[] = {
{ 0x10000, "installed", "Installed database",
required_argument, "DB" },
{ 0x10001, "raw-repository", "Add unsigned test repository index",
required_argument, "INDEX" },
{ 'u', "upgrade", "Prefer to upgrade package" },
{ 'a', "available",
"Re-install or downgrade if currently installed package is not "
"currently available from any repository" },
};
static struct apk_applet test_applet = {
.name = "test",
.help = "Test dependency graph solver (uses simple repository and installed db)",
.arguments = "'WORLD'",
.open_flags = APK_OPENF_READ | APK_OPENF_NO_STATE | APK_OPENF_NO_REPOS,
.context_size = sizeof(struct test_ctx),
.num_options = ARRAY_SIZE(test_options),
.options = test_options,
.parse = test_parse,
.main = test_main,
};
APK_DEFINE_APPLET(test_applet);
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