mirror of
https://github.com/moparisthebest/pacman
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100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/*
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* log.c
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*
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* Copyright (c) 2006-2011 Pacman Development Team <pacman-dev@archlinux.org>
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* Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdarg.h>
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#include <errno.h>
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/* libalpm */
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#include "log.h"
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#include "handle.h"
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#include "util.h"
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#include "alpm.h"
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/** \addtogroup alpm_log Logging Functions
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* @brief Functions to log using libalpm
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* @{
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*/
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/** A printf-like function for logging.
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* @param handle the context handle
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* @param fmt output format
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* @return 0 on success, -1 on error (pm_errno is set accordingly)
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*/
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int SYMEXPORT alpm_logaction(alpm_handle_t *handle, const char *fmt, ...)
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{
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int ret;
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va_list args;
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ASSERT(handle != NULL, return -1);
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/* check if the logstream is open already, opening it if needed */
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if(handle->logstream == NULL) {
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handle->logstream = fopen(handle->logfile, "a");
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/* if we couldn't open it, we have an issue */
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if(handle->logstream == NULL) {
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if(errno == EACCES) {
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handle->pm_errno = ALPM_ERR_BADPERMS;
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} else if(errno == ENOENT) {
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handle->pm_errno = ALPM_ERR_NOT_A_DIR;
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} else {
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handle->pm_errno = ALPM_ERR_SYSTEM;
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}
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return -1;
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}
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}
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va_start(args, fmt);
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ret = _alpm_logaction(handle, fmt, args);
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va_end(args);
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/* TODO We should add a prefix to log strings depending on who called us.
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* If logaction was called by the frontend:
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* USER: <the frontend log>
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* and if called internally:
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* ALPM: <the library log>
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* Moreover, the frontend should be able to choose its prefix
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* (USER by default?):
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* pacman: "PACMAN"
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* kpacman: "KPACMAN"
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* This would allow us to share the log file between several frontends
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* and know who does what */
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return ret;
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}
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/** @} */
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void _alpm_log(alpm_handle_t *handle, alpm_loglevel_t flag, const char *fmt, ...)
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{
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va_list args;
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if(handle == NULL || handle->logcb == NULL) {
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return;
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}
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va_start(args, fmt);
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handle->logcb(flag, fmt, args);
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va_end(args);
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}
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/* vim: set ts=2 sw=2 noet: */
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