libopkg/parse_util.c

   1 /* parse_util.c - the opkg package management system
   2
   3    Copyright (C) 2009 Ubiq Technologies <graham.gower@gmail.com>
   4
   5    Steven M. Ayer
   6    Copyright (C) 2002 Compaq Computer Corporation
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17 */
  18
  19 #include <ctype.h>
  20
  21 #include "opkg_utils.h"
  22 #include "libbb/libbb.h"
  23
  24 #include "parse_util.h"
  25
  26 int
  27 is_field(const char *type, const char *line)
  28 {
  29         if (!strncmp(line, type, strlen(type)))
  30                 return 1;
  31         return 0;
  32 }
  33
  34 char *
  35 parse_simple(const char *type, const char *line)
  36 {
  37         return trim_xstrdup(line + strlen(type) + 1);
  38 }
  39
  40 /*
  41  * Parse a comma separated string into an array.
  42  */
  43 char **
  44 parse_list(const char *raw, unsigned int *count, const char sep, int skip_field)
  45 {
  46         char **depends = NULL;
  47         const char *start, *end;
  48         int line_count = 0;
  49
  50         /* skip past the "Field:" marker */
  51         if (!skip_field) {
  52         while (*raw && *raw != ':')
  53                 raw++;
  54         raw++;
  55         }
  56
  57         if (line_is_blank(raw)) {
  58                 *count = line_count;
  59                 return NULL;
  60         }
  61
  62         while (*raw) {
  63                 depends = xrealloc(depends, sizeof(char *) * (line_count + 1));
  64
  65                 while (isspace(*raw))
  66                         raw++;
  67
  68                 start = raw;
  69                 while (*raw != sep && *raw)
  70                         raw++;
  71                 end = raw;
  72
  73                 while (end > start && isspace(*end))
  74                         end--;
  75
  76                 if (sep == ' ')
  77                         end++;
  78
  79                 depends[line_count] = xstrndup(start, end-start);
  80
  81                 line_count++;
  82                 if (*raw == sep)
  83                     raw++;
  84         }
  85
  86         *count = line_count;
  87         return depends;
  88 }