types/string.c

   1 /*
   2  * string.c
   3  *
   4  * BabelTrace - String Type Converter
   5  *
   6  * Copyright 2010, 2011 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  */
  18
  19 #include <babeltrace/compiler.h>
  20 #include <babeltrace/align.h>
  21 #include <babeltrace/format.h>
  22
  23 static
  24 struct definition *_string_definition_new(struct declaration *declaration,
  25                                 struct definition_scope *parent_scope,
  26                                 GQuark field_name, int index,
  27                                 const char *root_name);
  28 static
  29 void _string_definition_free(struct definition *definition);
  30
  31 static
  32 void _string_declaration_free(struct declaration *declaration)
  33 {
  34         struct declaration_string *string_declaration =
  35                 container_of(declaration, struct declaration_string, p);
  36         g_free(string_declaration);
  37 }
  38
  39 struct declaration_string *
  40         string_declaration_new(enum ctf_string_encoding encoding)
  41 {
  42         struct declaration_string *string_declaration;
  43
  44         string_declaration = g_new(struct declaration_string, 1);
  45         string_declaration->p.id = CTF_TYPE_STRING;
  46         string_declaration->p.alignment = CHAR_BIT;
  47         string_declaration->p.declaration_free = _string_declaration_free;
  48         string_declaration->p.definition_new = _string_definition_new;
  49         string_declaration->p.definition_free = _string_definition_free;
  50         string_declaration->p.ref = 1;
  51         string_declaration->encoding = encoding;
  52         return string_declaration;
  53 }
  54
  55 static
  56 struct definition *
  57         _string_definition_new(struct declaration *declaration,
  58                                struct definition_scope *parent_scope,
  59                                GQuark field_name, int index,
  60                                const char *root_name)
  61 {
  62         struct declaration_string *string_declaration =
  63                 container_of(declaration, struct declaration_string, p);
  64         struct definition_string *string;
  65         int ret;
  66
  67         string = g_new(struct definition_string, 1);
  68         declaration_ref(&string_declaration->p);
  69         string->p.declaration = declaration;
  70         string->declaration = string_declaration;
  71         string->p.ref = 1;
  72         /*
  73          * Use INT_MAX order to ensure that all fields of the parent
  74          * scope are seen as being prior to this scope.
  75          */
  76         string->p.index = root_name ? INT_MAX : index;
  77         string->p.name = field_name;
  78         string->p.path = new_definition_path(parent_scope, field_name,
  79                                         root_name);
  80         string->p.scope = NULL;
  81         string->value = NULL;
  82         string->len = 0;
  83         string->alloc_len = 0;
  84         ret = register_field_definition(field_name, &string->p,
  85                                         parent_scope);
  86         assert(!ret);
  87         return &string->p;
  88 }
  89
  90 static
  91 void _string_definition_free(struct definition *definition)
  92 {
  93         struct definition_string *string =
  94                 container_of(definition, struct definition_string, p);
  95
  96         declaration_unref(string->p.declaration);
  97         g_free(string->value);
  98         g_free(string);
  99 }