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 push_error_list(char *msg)
 31 {
 32         struct errlist *e;
 33 
 34         e = xcalloc(1, sizeof(struct errlist));
 35         e->errmsg = xstrdup(msg);
 36         e->next = NULL;
 37 
 38         if (error_list_head) {
 39                 error_list_tail->next = e;
 40                 error_list_tail = e;
 41         } else {
 42                 error_list_head = error_list_tail = e;
 43         }
 44 }
 45 
 46 void free_error_list(void)
 47 {
 48         struct errlist *err, *err_tmp;
 49 
 50         err = error_list_head;
 51         while (err != NULL) {
 52                 free(err->errmsg);
 53                 err_tmp = err;
 54                 err = err->next;
 55                 free(err_tmp);
 56         }
 57 }
 58 
 59 void print_error_list(void)
 60 {
 61         struct errlist *err = error_list_head;
 62 
 63         if (err) {
 64                 fprintf(stderr, "Collected errors:\n");
 65                 /* Here we print the errors collected and free the list */
 66                 while (err != NULL) {
 67                         fprintf(stderr, " * %s", err->errmsg);
 68                         err = err->next;
 69                 }
 70         }
 71 }
 72 
 73 void opkg_message(message_level_t level, const char *fmt, ...)
 74 {
 75         va_list ap;
 76 
 77         if (conf->verbosity < level)
 78                 return;
 79 
 80         if (conf->opkg_vmessage) {
 81                 /* Pass the message to libopkg users. */
 82                 va_start(ap, fmt);
 83                 conf->opkg_vmessage(level, fmt, ap);
 84                 va_end(ap);
 85                 return;
 86         }
 87 
 88         va_start(ap, fmt);
 89 
 90         if (level == ERROR) {
 91 #define MSG_LEN 4096
 92                 char msg[MSG_LEN];
 93                 int ret;
 94                 ret = vsnprintf(msg, MSG_LEN, fmt, ap);
 95                 if (ret < 0) {
 96                         fprintf(stderr, "%s: encountered an output or encoding"
 97                                 " error during vsnprintf.\n", __FUNCTION__);
 98                         va_end(ap);
 99                         exit(EXIT_FAILURE);
100                 }
101                 if (ret >= MSG_LEN) {
102                         fprintf(stderr, "%s: Message truncated.\n",
103                                 __FUNCTION__);
104                 }
105                 push_error_list(msg);
106         } else {
107                 if (vprintf(fmt, ap) < 0) {
108                         fprintf(stderr, "%s: encountered an output or encoding"
109                                 " error during vprintf.\n", __FUNCTION__);
110                         exit(EXIT_FAILURE);
111                 }
112         }
113 
114         va_end(ap);
115 }
116
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Sources/opkg-lede/libopkg/opkg_message.c
