libopkg/opkg_utils.c

   1 /* opkg_utils.c - the opkg package management system
   2
   3    Steven M. Ayer
   4
   5    Copyright (C) 2002 Compaq Computer Corporation
   6
   7    This program is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2, or (at
  10    your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16 */
  17
  18 #include "includes.h"
  19 #include <errno.h>
  20 #include <ctype.h>
  21 #include <sys/vfs.h>
  22
  23 #include "opkg_utils.h"
  24 #include "pkg.h"
  25 #include "pkg_hash.h"
  26
  27 void print_pkg_status(pkg_t * pkg, FILE * file);
  28
  29 int get_available_blocks(char * filesystem)
  30 {
  31      struct statfs sfs;
  32
  33      if(statfs(filesystem, &sfs)){
  34           fprintf(stderr, "bad statfs\n");
  35           return 0;
  36      }
  37      /*    fprintf(stderr, "reported fs type %x\n", sfs.f_type); */
  38      return ((sfs.f_bavail * sfs.f_bsize) / 1024);
  39 }
  40
  41 char **read_raw_pkgs_from_file(const char *file_name)
  42 {
  43      FILE *fp;
  44      char **ret;
  45
  46      if(!(fp = fopen(file_name, "r"))){
  47           fprintf(stderr, "can't get %s open for read\n", file_name);
  48           return NULL;
  49      }
  50
  51      ret = read_raw_pkgs_from_stream(fp);
  52
  53      fclose(fp);
  54
  55      return ret;
  56 }
  57
  58 char **read_raw_pkgs_from_stream(FILE *fp)
  59 {
  60      char **raw = NULL, *buf, *scout;
  61      int count = 0;
  62      size_t size = 512;
  63
  64      buf = calloc (1, size);
  65
  66      while (fgets(buf, size, fp)) {
  67           while (strlen (buf) == (size - 1)
  68                  && buf[size-2] != '\n') {
  69                size_t o = size - 1;
  70                size *= 2;
  71                buf = realloc (buf, size);
  72                if (fgets (buf + o, size - o, fp) == NULL)
  73                     break;
  74           }
  75
  76           if(!(count % 50))
  77                raw = realloc(raw, (count + 50) * sizeof(char *));
  78
  79           if((scout = strchr(buf, '\n')))
  80                *scout = '\0';
  81
  82           raw[count++] = strdup(buf);
  83      }
  84
  85      raw = realloc(raw, (count + 1) * sizeof(char *));
  86      raw[count] = NULL;
  87
  88      free (buf);
  89
  90      return raw;
  91 }
  92
  93 /* something to remove whitespace, a hash pooper */
  94 char *trim_alloc(char *line)
  95 {
  96      char *new;
  97      char *dest, *src, *end;
  98
  99      new = calloc(1, strlen(line) + 1);
 100      if ( new == NULL ){
 101         fprintf(stderr,"%s: Unable to allocate memory\n",__FUNCTION__);
 102         return NULL;
 103      }
 104      dest = new, src = line, end = line + (strlen(line) - 1);
 105
 106      /* remove it from the front */
 107      while(src &&
 108            isspace(*src) &&
 109            *src)
 110           src++;
 111      /* and now from the back */
 112      while((end > src) &&
 113            isspace(*end))
 114           end--;
 115      end++;
 116      *end = '\0';
 117      strcpy(new, src);
 118      /* this does from the first space
 119       *  blasting away any versions stuff in depends
 120       while(src &&
 121       !isspace(*src) &&
 122       *src)
 123       *dest++ = *src++;
 124       *dest = '\0';
 125       */
 126
 127      return new;
 128 }
 129
 130 int line_is_blank(const char *line)
 131 {
 132      const char *s;
 133
 134      for (s = line; *s; s++) {
 135           if (!isspace(*s))
 136                return 0;
 137      }
 138      return 1;
 139 }
 140
 141 void push_error_list(struct errlist ** errors, char * msg){
 142   struct errlist *err_lst_tmp;
 143
 144
 145   err_lst_tmp = calloc (1,  sizeof (err_lst_tmp) );
 146   err_lst_tmp->errmsg=strdup(msg) ;
 147   err_lst_tmp->next = *errors;
 148   *errors = err_lst_tmp;
 149 }
 150
 151
 152 void reverse_error_list(struct errlist **errors){
 153    struct errlist *result=NULL;
 154    struct errlist *current= *errors;
 155    struct errlist *next;
 156
 157    while ( current != NULL ) {
 158       next = current->next;
 159       current->next=result;
 160       result=current;
 161       current=next;
 162    }
 163    *errors=result;
 164
 165 }
 166
 167
 168 void free_error_list(){
 169 struct errlist *err_tmp_lst;
 170
 171   err_tmp_lst = error_list;
 172
 173     while (err_tmp_lst != NULL) {
 174       free(err_tmp_lst->errmsg);
 175       err_tmp_lst = error_list->next;
 176       free(error_list);
 177       error_list = err_tmp_lst;
 178     }
 179
 180
 181 }
 182
 183