lib/psiconv/list.c

/*
    list.c - Part of psiconv, a PSION 5 file formats converter
    Copyright (c) 1999, 2000  Frodo Looijaard <frodol@dds.nl>       

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/


#include "config.h"
#include "compat.h"
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include "list.h"
#include "error.h"

static int psiconv_list_resize(psiconv_list l,unsigned int nr);

struct psiconv_list_s {
  int cur_len;
  int max_len;
  int el_size;
  void *els;
};

psiconv_list psiconv_list_new(int element_size)
{
  psiconv_list l;
  l = malloc(sizeof(*l));
  if (!l)
    return NULL;
  l->cur_len = 0;
  l->max_len = 0;
  l->el_size=element_size;
  l->els = NULL; 
  return l;
} 

void psiconv_list_free(psiconv_list l)
{
  if (l->max_len)
    free(l->els);
  l->max_len = 0;
  l->cur_len = 0;
  l->els = NULL;
}

void psiconv_list_free_el(psiconv_list l, void free_el(void *el))
{
  psiconv_list_foreach_el(l,free_el);
  psiconv_list_free(l);
}

int psiconv_list_length(const psiconv_list l)
{
  return l->cur_len;
}

int psiconv_list_is_empty(const psiconv_list l)
{
  return l->cur_len == 0;
}

void *psiconv_list_get(const psiconv_list l, unsigned int indx)
{
  if (indx >= l->cur_len)
    return NULL;
  else
    return ((char *) (l->els)) + indx * l->el_size;
}

int psiconv_list_add(psiconv_list l, const void *el)
{
  int res;
  if ((res = psiconv_list_resize(l,l->cur_len + 1)))
    return res;
  memcpy(((char *) (l->els)) + l->cur_len * l->el_size, el, l->el_size);
  l->cur_len ++;
  return 0;
}

void psiconv_list_foreach_el(psiconv_list l, void action(void *el))
{
  int i;
  for (i = 0; i < l->cur_len; i ++)
    action(psiconv_list_get(l,i));
}

psiconv_list psiconv_list_clone(const psiconv_list l)
{
  psiconv_list l2;
  int i;
  l2 = psiconv_list_new(l->el_size);
  if (!l2)
    return NULL;
  for (i = 0; i < l->cur_len; i ++)
    if (psiconv_list_add(l2,psiconv_list_get(l,i))) {
      psiconv_list_free(l2);
      return NULL;
    }
  return l2;
  
}

size_t psiconv_list_fread(psiconv_list l,size_t size, FILE *f)
{
  size_t res;
  if (psiconv_list_resize(l,l->cur_len + size))
    return -PSICONV_E_NOMEM;
  res = fread(((char *) (l->els)) + l->cur_len * l->el_size,l->el_size,size,f);
  l->cur_len += res;
  return res;
}

int psiconv_list_resize(psiconv_list l,unsigned int nr)
{
  void * temp;
  if (nr > l->max_len) {
    l->max_len = 1.1 * nr;
    l->max_len += 16 - l->max_len % 16;
    temp = realloc(l->els,l->max_len * l->el_size);
    if (temp) {
      l->els = temp;
      return 0;
    } else
      return -PSICONV_E_NOMEM;
  }
  return 0;
}

int psiconv_list_concat(psiconv_list l, const psiconv_list extra)
{
  int res;
  if ((res = psiconv_list_resize(l,
                     l->cur_len + extra->cur_len * extra->el_size)))
    return res;
  /* Unreadable but correct. */
  memcpy(((char *) (l->els)) + l->cur_len * l->el_size,extra->els,
         extra->cur_len * extra->el_size);
  return 0;
}
1	frodo	2	/*
2			list.c - Part of psiconv, a PSION 5 file formats converter
3	frodo	63	Copyright (c) 1999, 2000 Frodo Looijaard <frodol@dds.nl>
4	frodo	2
5			This program is free software; you can redistribute it and/or modify
6			it under the terms of the GNU General Public License as published by
7			the Free Software Foundation; either version 2 of the License, or
8			(at your option) any later version.
9
10			This program is distributed in the hope that it will be useful,
11			but WITHOUT ANY WARRANTY; without even the implied warranty of
12			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13			GNU General Public License for more details.
14
15			You should have received a copy of the GNU General Public License
16			along with this program; if not, write to the Free Software
17			Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18			*/
19
20
21			#include "config.h"
22	frodo	71	#include "compat.h"
23	frodo	2	#include <stddef.h>
24			#include <stdlib.h>
25			#include <stdio.h>
26			#include "list.h"
27	frodo	62	#include "error.h"
28	frodo	2
29	frodo	62	static int psiconv_list_resize(psiconv_list l,unsigned int nr);
30	frodo	2
31	frodo	56	struct psiconv_list_s {
32	frodo	2	int cur_len;
33			int max_len;
34			int el_size;
35			void *els;
36			};
37
38			psiconv_list psiconv_list_new(int element_size)
39			{
40			psiconv_list l;
41			l = malloc(sizeof(*l));
42	frodo	62	if (!l)
43			return NULL;
44	frodo	2	l->cur_len = 0;
45			l->max_len = 0;
46			l->el_size=element_size;
47			l->els = NULL;
48			return l;
49			}
50
51			void psiconv_list_free(psiconv_list l)
52			{
53			if (l->max_len)
54			free(l->els);
55			l->max_len = 0;
56			l->cur_len = 0;
57			l->els = NULL;
58			}
59
60			void psiconv_list_free_el(psiconv_list l, void free_el(void *el))
61			{
62			psiconv_list_foreach_el(l,free_el);
63			psiconv_list_free(l);
64			}
65
66			int psiconv_list_length(const psiconv_list l)
67			{
68			return l->cur_len;
69			}
70
71			int psiconv_list_is_empty(const psiconv_list l)
72			{
73			return l->cur_len == 0;
74			}
75
76			void *psiconv_list_get(const psiconv_list l, unsigned int indx)
77			{
78			if (indx >= l->cur_len)
79			return NULL;
80			else
81			return ((char ) (l->els)) + indx l->el_size;
82			}
83
84	frodo	70	int psiconv_list_add(psiconv_list l, const void *el)
85	frodo	2	{
86	frodo	72	int res;
87			if ((res = psiconv_list_resize(l,l->cur_len + 1)))
88			return res;
89	frodo	2	memcpy(((char ) (l->els)) + l->cur_len l->el_size, el, l->el_size);
90			l->cur_len ++;
91	frodo	62	return 0;
92	frodo	2	}
93
94			void psiconv_list_foreach_el(psiconv_list l, void action(void *el))
95			{
96			int i;
97			for (i = 0; i < l->cur_len; i ++)
98			action(psiconv_list_get(l,i));
99			}
100
101			psiconv_list psiconv_list_clone(const psiconv_list l)
102			{
103			psiconv_list l2;
104			int i;
105			l2 = psiconv_list_new(l->el_size);
106	frodo	62	if (!l2)
107			return NULL;
108	frodo	2	for (i = 0; i < l->cur_len; i ++)
109	frodo	62	if (psiconv_list_add(l2,psiconv_list_get(l,i))) {
110			psiconv_list_free(l2);
111			return NULL;
112			}
113	frodo	2	return l2;
114
115			}
116
117			size_t psiconv_list_fread(psiconv_list l,size_t size, FILE *f)
118			{
119			size_t res;
120	frodo	62	if (psiconv_list_resize(l,l->cur_len + size))
121	frodo	72	return -PSICONV_E_NOMEM;
122	frodo	2	res = fread(((char ) (l->els)) + l->cur_len l->el_size,l->el_size,size,f);
123			l->cur_len += res;
124			return res;
125			}
126
127	frodo	62	int psiconv_list_resize(psiconv_list l,unsigned int nr)
128	frodo	2	{
129	frodo	62	void * temp;
130	frodo	2	if (nr > l->max_len) {
131			l->max_len = 1.1 * nr;
132			l->max_len += 16 - l->max_len % 16;
133	frodo	62	temp = realloc(l->els,l->max_len * l->el_size);
134			if (temp) {
135			l->els = temp;
136			return 0;
137			} else
138			return -PSICONV_E_NOMEM;
139	frodo	2	}
140	frodo	65	return 0;
141	frodo	2	}
142
143	frodo	72	int psiconv_list_concat(psiconv_list l, const psiconv_list extra)
144			{
145			int res;
146			if ((res = psiconv_list_resize(l,
147			l->cur_len + extra->cur_len * extra->el_size)))
148			return res;
149			/* Unreadable but correct. */
150			memcpy(((char ) (l->els)) + l->cur_len l->el_size,extra->els,
151			extra->cur_len * extra->el_size);
152			return 0;
153			}
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