libopkg/opkg_message.c

   1 /* opkg_message.c - the opkg package management system
   2
   3    Copyright (C) 2009 Ubiq Technologies <graham.gower@gmail.com>
   4    Copyright (C) 2003 Daniele Nicolodi <daniele@grinta.net>
   5
   6    This program is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU General Public License as
   8    published by the Free Software Foundation; either version 2, or (at
   9    your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful, but
  12    WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    General Public License for more details.
  15 */
  16
  17 #include <stdio.h>
  18
  19 #include "opkg_conf.h"
  20 #include "opkg_message.h"
  21 #include "libbb/libbb.h"
  22
  23 struct errlist {
  24         char *errmsg;
  25         struct errlist *next;
  26 };
  27
  28 static struct errlist *error_list_head, *error_list_tail;
  29
  30 static void
  31 push_error_list(char *msg)
  32 {
  33         struct errlist *e;
  34
  35         e = xcalloc(1,  sizeof(struct errlist));
  36         e->errmsg = xstrdup(msg);
  37         e->next = NULL;
  38
  39         if (error_list_head) {
  40                 error_list_tail->next = e;
  41                 error_list_tail = e;
  42         } else {
  43                 error_list_head = error_list_tail = e;
  44         }
  45 }
  46
  47 void
  48 free_error_list(void)
  49 {
  50         struct errlist *err, *err_tmp;
  51
  52         err = error_list_head;
  53         while (err != NULL) {
  54                 free(err->errmsg);
  55                 err_tmp = err;
  56                 err = err->next;
  57                 free(err_tmp);
  58         }
  59 }
  60
  61 void
  62 print_error_list(void)
  63 {
  64         struct errlist *err = error_list_head;
  65
  66         if (err) {
  67                 printf("Collected errors:\n");
  68                 /* Here we print the errors collected and free the list */
  69                 while (err != NULL) {
  70                         printf(" * %s", err->errmsg);
  71                         err = err->next;
  72                 }
  73         }
  74 }
  75
  76 void
  77 opkg_message (message_level_t level, const char *fmt, ...)
  78 {
  79         va_list ap;
  80
  81         if (conf->verbosity < level)
  82                 return;
  83
  84         if (conf->opkg_vmessage) {
  85                 /* Pass the message to libopkg users. */
  86                 va_start (ap, fmt);
  87                 conf->opkg_vmessage(level, fmt, ap);
  88                 va_end (ap);
  89                 return;
  90         }
  91
  92         va_start (ap, fmt);
  93
  94         if (level == ERROR) {
  95 #define MSG_LEN 4096
  96                 char msg[MSG_LEN];
  97                 if (vsnprintf(msg, MSG_LEN, fmt, ap) >= MSG_LEN) {
  98                         fprintf(stderr, "%s: Message truncated!\n",
  99                                         __FUNCTION__);
 100                 }
 101                 push_error_list(msg);
 102         } else
 103                 vprintf(fmt, ap);
 104
 105         va_end (ap);
 106 }