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pk-backend-transaction.c
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pk-backend-transaction.c
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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
*
* Copyright (C) 2007 Andreas Obergrusberger <tradiaz@yahoo.de>
* Copyright (C) 2008-2010 Valeriy Lyasotskiy <onestep@ukr.net>
* Copyright (C) 2010-2011 Jonathan Conder <jonno.conder@gmail.com>
*
* Licensed under the GNU General Public License Version 2
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "pk-backend-alpm.h"
#include "pk-backend-error.h"
#include "pk-backend-packages.h"
#include "pk-backend-transaction.h"
static off_t dcomplete = 0;
static off_t dtotal = 0;
static alpm_pkg_t *dpkg = NULL;
static GString *dfiles = NULL;
static alpm_pkg_t *tpkg = NULL;
static GString *toutput = NULL;
static gchar *
pk_backend_resolve_path (PkBackend *self, const gchar *basename)
{
const gchar *dirname;
g_return_val_if_fail (self != NULL, NULL);
g_return_val_if_fail (basename != NULL, NULL);
//dirname = pk_backend_get_string (self, "directory");
g_return_val_if_fail (dirname != NULL, NULL);
return g_build_filename (dirname, basename, NULL);
}
static gboolean
alpm_pkg_has_basename (alpm_pkg_t *pkg, const gchar *basename)
{
const alpm_list_t *i;
g_return_val_if_fail (pkg != NULL, FALSE);
g_return_val_if_fail (basename != NULL, FALSE);
g_return_val_if_fail (alpm != NULL, FALSE);
if (g_strcmp0 (alpm_pkg_get_filename (pkg), basename) == 0) {
return TRUE;
}
if (alpm_option_get_deltaratio (alpm) == 0.0) {
return FALSE;
}
for (i = alpm_pkg_get_deltas (pkg); i != NULL; i = i->next) {
alpm_delta_t *delta = (alpm_delta_t *) i->data;
if (g_strcmp0 (delta->delta, basename) == 0) {
return TRUE;
}
}
return FALSE;
}
static void
pk_backend_transaction_download_end (PkBackend *self)
{
g_return_if_fail (self != NULL);
g_return_if_fail (dpkg != NULL);
pk_backend_pkg (self, dpkg, PK_INFO_ENUM_FINISHED);
/* tell DownloadPackages what files were downloaded */
if (dfiles != NULL) {
gchar *package_id;
package_id = alpm_pkg_build_id (dpkg);
pk_backend_job_files (self, package_id, dfiles->str);
g_free (package_id);
g_string_free (dfiles, TRUE);
}
dpkg = NULL;
dfiles = NULL;
}
static void
pk_backend_transaction_download_start (PkBackend *self, const gchar *basename)
{
gchar *path;
const alpm_list_t *i;
g_return_if_fail (self != NULL);
g_return_if_fail (basename != NULL);
g_return_if_fail (alpm != NULL);
/* continue or finish downloading the current package */
if (dpkg != NULL) {
if (alpm_pkg_has_basename (dpkg, basename)) {
if (dfiles != NULL) {
path = pk_backend_resolve_path (self, basename);
g_string_append_printf (dfiles, ";%s", path);
g_free (path);
}
return;
} else {
pk_backend_transaction_download_end (self);
dpkg = NULL;
}
}
/* figure out what the next package is */
for (i = alpm_trans_get_add (alpm); i != NULL; i = i->next) {
alpm_pkg_t *pkg = (alpm_pkg_t *) i->data;
if (alpm_pkg_has_basename (pkg, basename)) {
dpkg = pkg;
break;
}
}
if (dpkg == NULL) {
return;
}
pk_backend_pkg (self, dpkg, PK_INFO_ENUM_DOWNLOADING);
/* start collecting files for the new package */
if (pk_backend_job_get_role (self) == PK_ROLE_ENUM_DOWNLOAD_PACKAGES) {
path = pk_backend_resolve_path (self, basename);
dfiles = g_string_new (path);
g_free (path);
}
}
static void
pk_backend_transaction_totaldlcb (off_t total)
{
g_return_if_fail (backend != NULL);
if (dtotal > 0 && dpkg != NULL) {
pk_backend_transaction_download_end (backend);
}
dcomplete = 0;
dtotal = total;
}
static void
pk_backend_transaction_dlcb (const gchar *basename, off_t complete, off_t total)
{
guint percentage = 100, sub_percentage = 100;
g_return_if_fail (basename != NULL);
g_return_if_fail (complete <= total);
g_return_if_fail (backend != NULL);
if (total > 0) {
sub_percentage = complete * 100 / total;
}
if (dtotal > 0) {
percentage = (dcomplete + complete) * 100 / dtotal;
} else if (dtotal < 0) {
/* database files */
percentage = (dcomplete * 100 + sub_percentage) / -dtotal;
if (complete == total) {
complete = total = 1;
} else {
complete = total + 1;
}
}
if (complete == 0) {
g_debug ("downloading file %s", basename);
pk_backend_job_set_status (backendjob, PK_STATUS_ENUM_DOWNLOAD);
pk_backend_transaction_download_start (backend, basename);
} else if (complete == total) {
dcomplete += complete;
}
pk_backend_job_set_item_progress (backend, basename, PK_STATUS_ENUM_DOWNLOAD,sub_percentage);
pk_backend_job_set_percentage (backend, percentage);
}
static void
pk_backend_transaction_progress_cb (alpm_progress_t type, const gchar *target,
gint percent, gsize targets, gsize current)
{
static gint recent = 101;
gsize overall = percent + (current - 1) * 100;
/* TODO: remove block if/when this is made consistent upstream */
if (type == ALPM_PROGRESS_CONFLICTS_START ||
type == ALPM_PROGRESS_DISKSPACE_START ||
type == ALPM_PROGRESS_INTEGRITY_START ||
type == ALPM_PROGRESS_LOAD_START ||
type == ALPM_PROGRESS_KEYRING_START) {
if (current < targets) {
++current;
overall += 100;
}
}
if (current < 1 || targets < current) {
g_warning ("TODO: CURRENT/TARGETS FAILED for %d", type);
}
g_return_if_fail (target != NULL);
g_return_if_fail (0 <= percent && percent <= 100);
g_return_if_fail (1 <= current && current <= targets);
g_return_if_fail (backend != NULL);
/* update transaction progress */
switch (type) {
case ALPM_PROGRESS_ADD_START:
case ALPM_PROGRESS_UPGRADE_START:
case ALPM_PROGRESS_DOWNGRADE_START:
case ALPM_PROGRESS_REINSTALL_START:
case ALPM_PROGRESS_REMOVE_START:
case ALPM_PROGRESS_CONFLICTS_START:
case ALPM_PROGRESS_DISKSPACE_START:
case ALPM_PROGRESS_INTEGRITY_START:
case ALPM_PROGRESS_LOAD_START:
case ALPM_PROGRESS_KEYRING_START:
if (percent == recent) {
break;
}
pk_backend_job_set_item_progress (backend, target, PK_INFO_ENUM_DOWNLOADING, percent);
pk_backend_job_set_percentage (backendjob, overall / targets);
recent = percent;
g_debug ("%d%% of %s complete (%zu of %zu)", percent,
target, current, targets);
break;
default:
g_warning ("unknown progress type %d", type);
break;
}
}
static void
pk_backend_install_ignorepkg (PkBackend *self, alpm_pkg_t *pkg, gint *result)
{
gchar *output;
g_return_if_fail (self != NULL);
g_return_if_fail (pkg != NULL);
g_return_if_fail (result != NULL);
switch (pk_backend_job_get_role (self)) {
case PK_ROLE_ENUM_INSTALL_PACKAGES:
output = g_strdup_printf ("%s: was not ignored\n",
alpm_pkg_get_name (pkg));
pk_backend_output (self, output);
g_free (output);
case PK_ROLE_ENUM_DOWNLOAD_PACKAGES:
*result = 1;
break;
default:
*result = 0;
break;
}
}
static void
pk_backend_select_provider (PkBackend *self, const alpm_list_t *providers,
alpm_depend_t *depend)
{
gchar *output;
g_return_if_fail (self != NULL);
g_return_if_fail (depend != NULL);
g_return_if_fail (providers != NULL);
output = g_strdup_printf ("provider package was selected "
"(%s provides %s)\n",
alpm_pkg_get_name (providers->data),
depend->name);
pk_backend_output (self, output);
g_free (output);
}
static void
pk_backend_transaction_conv_cb (alpm_question_t question, gpointer data1,
gpointer data2, gpointer data3, gint *result)
{
g_return_if_fail (result != NULL);
g_return_if_fail (backend != NULL);
switch (question) {
case ALPM_QUESTION_INSTALL_IGNOREPKG:
pk_backend_install_ignorepkg (backend, data1, result);
break;
case ALPM_QUESTION_REPLACE_PKG:
case ALPM_QUESTION_CONFLICT_PKG:
case ALPM_QUESTION_CORRUPTED_PKG:
case ALPM_QUESTION_LOCAL_NEWER:
/* these actions are mostly harmless */
g_debug ("safe question %d", question);
*result = 1;
break;
case ALPM_QUESTION_REMOVE_PKGS:
/* TODO: handle keys better */
case ALPM_QUESTION_IMPORT_KEY:
g_debug ("unsafe question %d", question);
*result = 0;
break;
case ALPM_QUESTION_SELECT_PROVIDER:
pk_backend_select_provider (backend, data1, data2);
*result = 0;
break;
default:
g_warning ("unknown question %d", question);
break;
}
}
static void
pk_backend_output_end (PkBackend *self)
{
g_return_if_fail (self != NULL);
tpkg = NULL;
if (toutput != NULL) {
pk_backend_output (self, toutput->str);
g_string_free (toutput, TRUE);
toutput = NULL;
}
}
static void
pk_backend_output_start (PkBackend *self, alpm_pkg_t *pkg)
{
g_return_if_fail (self != NULL);
g_return_if_fail (pkg != NULL);
if (tpkg != NULL) {
pk_backend_output_end (self);
}
tpkg = pkg;
}
void
pk_backend_output (PkBackend *self, const gchar *output)
{
g_return_if_fail (self != NULL);
g_return_if_fail (output != NULL);
if (tpkg != NULL) {
if (toutput == NULL) {
toutput = g_string_new ("<b>");
g_string_append (toutput, alpm_pkg_get_name (tpkg));
g_string_append (toutput, "</b>\n");
}
g_string_append (toutput, output);
}
}
static void
pk_backend_output_once (PkBackend *self, alpm_pkg_t *pkg, const gchar *output)
{
g_return_if_fail (self != NULL);
g_return_if_fail (pkg != NULL);
g_return_if_fail (output != NULL);
pk_backend_job_message (self, PK_MESSAGE_ENUM_UNKNOWN, "<b>%s</b>\n%s",
alpm_pkg_get_name (pkg), output);
}
static void
pk_backend_transaction_dep_resolve (PkBackend *self)
{
g_return_if_fail (self != NULL);
pk_backend_job_set_status (self, PK_STATUS_ENUM_DEP_RESOLVE);
}
static void
pk_backend_transaction_test_commit (PkBackend *self)
{
g_return_if_fail (self != NULL);
pk_backend_job_set_status (self, PK_STATUS_ENUM_TEST_COMMIT);
}
static void
pk_backend_transaction_add_start (PkBackend *self, alpm_pkg_t *pkg)
{
g_return_if_fail (self != NULL);
g_return_if_fail (pkg != NULL);
pk_backend_job_set_status (self, PK_STATUS_ENUM_INSTALL);
pk_backend_pkg (self, pkg, PK_INFO_ENUM_INSTALLING);
pk_backend_output_start (self, pkg);
}
static void
pk_backend_transaction_add_done (PkBackend *self, alpm_pkg_t *pkg)
{
const gchar *name, *version;
const alpm_list_t *i, *optdepends;
g_return_if_fail (self != NULL);
g_return_if_fail (pkg != NULL);
g_return_if_fail (alpm != NULL);
name = alpm_pkg_get_name (pkg);
version = alpm_pkg_get_version (pkg);
alpm_logaction (alpm, PK_LOG_PREFIX, "installed %s (%s)\n", name,
version);
pk_backend_pkg (self, pkg, PK_INFO_ENUM_FINISHED);
optdepends = alpm_pkg_get_optdepends (pkg);
if (optdepends != NULL) {
pk_backend_output (self, "Optional dependencies:\n");
for (i = optdepends; i != NULL; i = i->next) {
gchar *depend = alpm_dep_compute_string (i->data);
gchar *output = g_strdup_printf ("%s\n", depend);
free (depend);
pk_backend_output (self, output);
g_free (output);
}
}
pk_backend_output_end (self);
}
static void
pk_backend_transaction_remove_start (PkBackend *self, alpm_pkg_t *pkg)
{
g_return_if_fail (self != NULL);
g_return_if_fail (pkg != NULL);
pk_backend_job_set_status (self, PK_STATUS_ENUM_REMOVE);
pk_backend_pkg (self, pkg, PK_INFO_ENUM_REMOVING);
pk_backend_output_start (self, pkg);
}
static void
pk_backend_transaction_remove_done (PkBackend *self, alpm_pkg_t *pkg)
{
const gchar *name, *version;
g_return_if_fail (self != NULL);
g_return_if_fail (pkg != NULL);
g_return_if_fail (alpm != NULL);
name = alpm_pkg_get_name (pkg);
version = alpm_pkg_get_version (pkg);
alpm_logaction (alpm, PK_LOG_PREFIX, "removed %s (%s)\n", name,
version);
pk_backend_pkg (self, pkg, PK_INFO_ENUM_FINISHED);
pk_backend_output_end (self);
}
static void
pk_backend_transaction_upgrade_start (PkBackend *self, alpm_pkg_t *pkg,
alpm_pkg_t *old)
{
PkRoleEnum role;
PkStatusEnum state;
PkInfoEnum info;
g_return_if_fail (self != NULL);
g_return_if_fail (pkg != NULL);
role = pk_backend_job_get_role (self);
if (role == PK_ROLE_ENUM_INSTALL_FILES) {
state = PK_STATUS_ENUM_INSTALL;
info = PK_INFO_ENUM_INSTALLING;
} else {
state = PK_STATUS_ENUM_UPDATE;
info = PK_INFO_ENUM_UPDATING;
}
pk_backend_job_set_status (self, state);
pk_backend_pkg (self, pkg, info);
pk_backend_output_start (self, pkg);
}
static gint
alpm_depend_compare (gconstpointer a, gconstpointer b)
{
const alpm_depend_t *first = a;
const alpm_depend_t *second = b;
gint result;
g_return_val_if_fail (first != NULL, 0);
g_return_val_if_fail (second != NULL, 0);
result = g_strcmp0 (first->name, second->name);
if (result == 0) {
result = first->mod - second->mod;
if (result == 0) {
result = g_strcmp0 (first->version, second->version);
if (result == 0) {
result = g_strcmp0 (first->desc, second->desc);
}
}
}
return result;
}
static void
pk_backend_transaction_process_new_optdepends (PkBackend *self, alpm_pkg_t *pkg,
alpm_pkg_t *old)
{
alpm_list_t *optdepends;
const alpm_list_t *i;
g_return_if_fail (self != NULL);
g_return_if_fail (pkg != NULL);
g_return_if_fail (old != NULL);
optdepends = alpm_list_diff (alpm_pkg_get_optdepends (pkg),
alpm_pkg_get_optdepends (old),
alpm_depend_compare);
if (optdepends == NULL) {
return;
}
pk_backend_output (self, "New optional dependencies:\n");
for (i = optdepends; i != NULL; i = i->next) {
gchar *depend = alpm_dep_compute_string (i->data);
gchar *output = g_strdup_printf ("%s\n", depend);
free (depend);
pk_backend_output (self, output);
g_free (output);
}
alpm_list_free (optdepends);
}
static void
pk_backend_transaction_upgrade_done (PkBackend *self, alpm_pkg_t *pkg,
alpm_pkg_t *old, gint direction)
{
const gchar *name, *pre, *post;
g_return_if_fail (self != NULL);
g_return_if_fail (pkg != NULL);
g_return_if_fail (old != NULL || direction == 0);
g_return_if_fail (alpm != NULL);
name = alpm_pkg_get_name (pkg);
if (direction != 0) {
pre = alpm_pkg_get_version (old);
}
post = alpm_pkg_get_version (pkg);
if (direction > 0) {
alpm_logaction (alpm, PK_LOG_PREFIX, "upgraded %s (%s -> %s)\n",
name, pre, post);
} else if (direction < 0) {
alpm_logaction (alpm, PK_LOG_PREFIX,
"downgraded %s (%s -> %s)\n", name, pre, post);
} else {
alpm_logaction (alpm, PK_LOG_PREFIX, "reinstalled %s (%s)\n",
name, post);
}
pk_backend_pkg (self, pkg, PK_INFO_ENUM_FINISHED);
if (direction != 0) {
pk_backend_transaction_process_new_optdepends (self, pkg, old);
}
pk_backend_output_end (self);
}
static void
pk_backend_transaction_sig_check (PkBackend *self)
{
g_return_if_fail (self != NULL);
pk_backend_job_set_status (self, PK_STATUS_ENUM_SIG_CHECK);
}
static void
pk_backend_transaction_setup (PkBackend *self)
{
g_return_if_fail (self != NULL);
pk_backend_job_set_status (self, PK_STATUS_ENUM_SETUP);
}
static void
pk_backend_transaction_repackaging (PkBackend *self)
{
g_return_if_fail (self != NULL);
pk_backend_job_set_status (self, PK_STATUS_ENUM_REPACKAGING);
}
static void
pk_backend_transaction_download (PkBackend *self)
{
g_return_if_fail (self != NULL);
pk_backend_job_set_status (self, PK_STATUS_ENUM_DOWNLOAD);
}
static void
pk_backend_transaction_optdepend_required (PkBackend *self, alpm_pkg_t *pkg,
alpm_depend_t *optdepend)
{
gchar *depend, *output;
g_return_if_fail (self != NULL);
g_return_if_fail (pkg != NULL);
g_return_if_fail (optdepend != NULL);
depend = alpm_dep_compute_string (optdepend);
output = g_strdup_printf ("optionally requires %s\n", depend);
free (depend);
pk_backend_output_once (self, pkg, output);
g_free (output);
}
static void
pk_backend_transaction_event_cb (alpm_event_t event, gpointer data,
gpointer old)
{
g_return_if_fail (backend != NULL);
/* figure out backend status and process package changes */
switch (event) {
case ALPM_EVENT_CHECKDEPS_START:
case ALPM_EVENT_RESOLVEDEPS_START:
pk_backend_transaction_dep_resolve (backend);
break;
case ALPM_EVENT_FILECONFLICTS_START:
case ALPM_EVENT_INTERCONFLICTS_START:
case ALPM_EVENT_DELTA_INTEGRITY_START:
case ALPM_EVENT_DISKSPACE_START:
pk_backend_transaction_test_commit (backend);
break;
case ALPM_EVENT_ADD_START:
pk_backend_transaction_add_start (backend, data);
break;
case ALPM_EVENT_ADD_DONE:
pk_backend_transaction_add_done (backend, data);
break;
case ALPM_EVENT_REMOVE_START:
pk_backend_transaction_remove_start (backend, data);
break;
case ALPM_EVENT_REMOVE_DONE:
pk_backend_transaction_remove_done (backend, data);
break;
case ALPM_EVENT_UPGRADE_START:
case ALPM_EVENT_DOWNGRADE_START:
case ALPM_EVENT_REINSTALL_START:
pk_backend_transaction_upgrade_start (backend, data,
old);
break;
case ALPM_EVENT_UPGRADE_DONE:
pk_backend_transaction_upgrade_done (backend, data,
old, 1);
break;
case ALPM_EVENT_DOWNGRADE_DONE:
pk_backend_transaction_upgrade_done (backend, data,
old, -1);
break;
case ALPM_EVENT_REINSTALL_DONE:
pk_backend_transaction_upgrade_done (backend, data,
old, 0);
break;
case ALPM_EVENT_INTEGRITY_START:
case ALPM_EVENT_KEYRING_START:
pk_backend_transaction_sig_check (backend);
break;
case ALPM_EVENT_LOAD_START:
pk_backend_transaction_setup (backend);
break;
case ALPM_EVENT_DELTA_PATCHES_START:
case ALPM_EVENT_DELTA_PATCH_START:
pk_backend_transaction_repackaging (backend);
break;
case ALPM_EVENT_SCRIPTLET_INFO:
pk_backend_output (backend, data);
break;
case ALPM_EVENT_RETRIEVE_START:
pk_backend_transaction_download (backend);
break;
case ALPM_EVENT_OPTDEP_REQUIRED:
/* TODO: remove if this results in notification spam */
pk_backend_transaction_optdepend_required (backend,
data, old);
break;
case ALPM_EVENT_CHECKDEPS_DONE:
case ALPM_EVENT_FILECONFLICTS_DONE:
case ALPM_EVENT_RESOLVEDEPS_DONE:
case ALPM_EVENT_INTERCONFLICTS_DONE:
case ALPM_EVENT_INTEGRITY_DONE:
case ALPM_EVENT_LOAD_DONE:
case ALPM_EVENT_DELTA_INTEGRITY_DONE:
case ALPM_EVENT_DELTA_PATCHES_DONE:
case ALPM_EVENT_DELTA_PATCH_DONE:
case ALPM_EVENT_DELTA_PATCH_FAILED:
case ALPM_EVENT_DISKSPACE_DONE:
case ALPM_EVENT_DATABASE_MISSING:
case ALPM_EVENT_KEYRING_DONE:
case ALPM_EVENT_KEY_DOWNLOAD_START:
case ALPM_EVENT_KEY_DOWNLOAD_DONE:
/* ignored */
break;
default:
g_debug ("unhandled event %d", event);
break;
}
}
static void
transaction_cancelled_cb (GCancellable *object, gpointer data)
{
g_return_if_fail (data != NULL);
g_return_if_fail (alpm != NULL);
alpm_trans_interrupt (alpm);
}
gboolean
pk_backend_transaction_initialize (PkBackend *self, alpm_transflag_t flags,
GError **error)
{
g_return_val_if_fail (self != NULL, FALSE);
g_return_val_if_fail (alpm != NULL, FALSE);
g_return_val_if_fail (cancellable != NULL, FALSE);
if (alpm_trans_init (alpm, flags) < 0) {
alpm_errno_t errno = alpm_errno (alpm);
g_set_error_literal (error, ALPM_ERROR, errno,
alpm_strerror (errno));
return FALSE;
}
alpm_option_set_eventcb (alpm, pk_backend_transaction_event_cb);
alpm_option_set_questioncb (alpm, pk_backend_transaction_conv_cb);
alpm_option_set_progresscb (alpm, pk_backend_transaction_progress_cb);
alpm_option_set_dlcb (alpm, pk_backend_transaction_dlcb);
alpm_option_set_totaldlcb (alpm, pk_backend_transaction_totaldlcb);
g_cancellable_connect (cancellable,
G_CALLBACK (transaction_cancelled_cb),
self, NULL);
return TRUE;
}
static gchar *
alpm_pkg_build_list (const alpm_list_t *i)
{
GString *list;
if (i == NULL) {
return NULL;
} else {
list = g_string_new ("");
}
for (; i != NULL; i = i->next) {
g_string_append_printf (list, "%s, ",
alpm_pkg_get_name (i->data));
}
g_string_truncate (list, list->len - 2);
return g_string_free (list, FALSE);
}
static gchar *
alpm_miss_build_list (const alpm_list_t *i)
{
GString *list;
if (i == NULL) {
return NULL;
} else {
list = g_string_new ("");
}
for (; i != NULL; i = i->next) {
alpm_depmissing_t *miss = (alpm_depmissing_t *) i->data;
gchar *depend = alpm_dep_compute_string (miss->depend);
g_string_append_printf (list, "%s <- %s, ", depend,
miss->target);
free (depend);
}
g_string_truncate (list, list->len - 2);
return g_string_free (list, FALSE);
}
static void
alpm_depend_free (alpm_depend_t *depend)
{
free (depend->name);
free (depend->version);
free (depend->desc);
free (depend);
}
static void
alpm_depmissing_free (gpointer miss)
{
alpm_depmissing_t *self = (alpm_depmissing_t *) miss;
free (self->target);
alpm_depend_free (self->depend);
free (self->causingpkg);
free (miss);
}
static gchar *
alpm_conflict_build_list (const alpm_list_t *i)
{
GString *list;
if (i == NULL) {
return NULL;
} else {
list = g_string_new ("");
}
for (; i != NULL; i = i->next) {
alpm_conflict_t *conflict = (alpm_conflict_t *) i->data;
alpm_depend_t *depend = conflict->reason;
if (g_strcmp0 (conflict->package1, depend->name) == 0 ||
g_strcmp0 (conflict->package2, depend->name) == 0) {
g_string_append_printf (list, "%s <-> %s, ",
conflict->package1,
conflict->package2);
} else {
gchar *reason = alpm_dep_compute_string (depend);
g_string_append_printf (list, "%s <-> %s (%s), ",
conflict->package1,
conflict->package2, reason);
free (reason);
}
}
g_string_truncate (list, list->len - 2);
return g_string_free (list, FALSE);
}
static void
alpm_conflict_free (gpointer conflict)
{
alpm_conflict_t *self = (alpm_conflict_t *) conflict;
free (self->package1);
free (self->package2);
free (conflict);
}
static gchar *
alpm_fileconflict_build_list (const alpm_list_t *i)
{
GString *list;
if (i == NULL) {
return NULL;
} else {
list = g_string_new ("");
}
for (; i != NULL; i = i->next) {
alpm_fileconflict_t *conflict = (alpm_fileconflict_t *) i->data;
if (*conflict->ctarget != '\0') {
g_string_append_printf (list, "%s <-> %s (%s), ",
conflict->target,
conflict->ctarget,
conflict->file);
} else {
g_string_append_printf (list, "%s (%s), ",
conflict->target,
conflict->file);
}
}
g_string_truncate (list, list->len - 2);
return g_string_free (list, FALSE);
}
static void
alpm_fileconflict_free (gpointer conflict)
{
alpm_fileconflict_t *self = (alpm_fileconflict_t *) conflict;
free (self->target);
free (self->file);
free (self->ctarget);
free (conflict);
}
gboolean
pk_backend_transaction_simulate (PkBackend *self, GError **error)
{
alpm_list_t *data = NULL;
gchar *prefix;
g_return_val_if_fail (self != NULL, FALSE);
g_return_val_if_fail (alpm != NULL, FALSE);
if (alpm_trans_prepare (alpm, &data) >= 0) {
return TRUE;
}
switch (alpm_errno (alpm)) {
case ALPM_ERR_PKG_INVALID_ARCH:
prefix = alpm_pkg_build_list (data);
alpm_list_free (data);
break;
case ALPM_ERR_UNSATISFIED_DEPS:
prefix = alpm_miss_build_list (data);
alpm_list_free_inner (data, alpm_depmissing_free);
alpm_list_free (data);
break;
case ALPM_ERR_CONFLICTING_DEPS:
prefix = alpm_conflict_build_list (data);
alpm_list_free_inner (data, alpm_conflict_free);
alpm_list_free (data);
break;
case ALPM_ERR_FILE_CONFLICTS:
prefix = alpm_fileconflict_build_list (data);
alpm_list_free_inner (data, alpm_fileconflict_free);
alpm_list_free (data);
break;
default:
prefix = NULL;
if (data != NULL) {
g_warning ("unhandled error %d",
alpm_errno (alpm));
}
break;
}
if (prefix != NULL) {
alpm_errno_t errno = alpm_errno (alpm);
g_set_error (error, ALPM_ERROR, errno, "%s: %s", prefix,