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 "general.h"
#include "list.h"
#include "error.h"

static int psiconv_list_resize(psiconv_list l,psiconv_u32 nr);

struct psiconv_list_s {
  psiconv_u32 cur_len;
  psiconv_u32 max_len;
  size_t el_size;
  void *els;
};

psiconv_list psiconv_list_new(size_t 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);
}

psiconv_u32 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, psiconv_u32 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))
{
  psiconv_u32 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;
  psiconv_u32 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 0;
  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_fread_all(psiconv_list l, FILE *f)
{
  while (!feof(f)) {
    if (!psiconv_list_fread(l,1024,f) && !feof(f)) 
      return -PSICONV_E_NOMEM;
  }
  return -PSICONV_E_OK;
}

int psiconv_list_fwrite_all(const psiconv_list l, FILE *f)
{
  psiconv_u32 pos = 0;
  psiconv_u32 written;
  psiconv_u32 len = psiconv_list_length(l);
  while (pos < len) {
    if (!(written = fwrite(((char *)(l->els)) + pos * l->el_size,l->el_size,
                           len - pos,f)))
      return -PSICONV_E_OTHER;
    pos += written;
  }
  return -PSICONV_E_OK;
}

int psiconv_list_resize(psiconv_list l,psiconv_u32 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 -PSICONV_E_OK;
    } else
      return -PSICONV_E_NOMEM;
  }
  return -PSICONV_E_OK;
}

int psiconv_list_concat(psiconv_list l, const psiconv_list extra)
{
  int res;
  if (l->el_size != extra->el_size)
    return -PSICONV_E_OTHER;
  if ((res = psiconv_list_resize(l,
                     l->cur_len + extra->cur_len)))
    return res;
  /* Unreadable but correct. */
  memcpy(((char *) (l->els)) + l->cur_len * l->el_size,extra->els,
         extra->cur_len * extra->el_size);
  l->cur_len += extra->cur_len;
  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	frodo	79	#include "general.h"
27	frodo	2	#include "list.h"
28	frodo	62	#include "error.h"
29	frodo	2
30	frodo	79	static int psiconv_list_resize(psiconv_list l,psiconv_u32 nr);
31	frodo	2
32	frodo	56	struct psiconv_list_s {
33	frodo	79	psiconv_u32 cur_len;
34			psiconv_u32 max_len;
35			size_t el_size;
36	frodo	2	void *els;
37			};
38
39	frodo	79	psiconv_list psiconv_list_new(size_t element_size)
40	frodo	2	{
41			psiconv_list l;
42			l = malloc(sizeof(*l));
43	frodo	62	if (!l)
44			return NULL;
45	frodo	2	l->cur_len = 0;
46			l->max_len = 0;
47			l->el_size=element_size;
48			l->els = NULL;
49			return l;
50			}
51
52			void psiconv_list_free(psiconv_list l)
53			{
54			if (l->max_len)
55			free(l->els);
56			l->max_len = 0;
57			l->cur_len = 0;
58			l->els = NULL;
59			}
60
61			void psiconv_list_free_el(psiconv_list l, void free_el(void *el))
62			{
63			psiconv_list_foreach_el(l,free_el);
64			psiconv_list_free(l);
65			}
66
67	frodo	79	psiconv_u32 psiconv_list_length(const psiconv_list l)
68	frodo	2	{
69			return l->cur_len;
70			}
71
72			int psiconv_list_is_empty(const psiconv_list l)
73			{
74			return l->cur_len == 0;
75			}
76
77	frodo	79	void *psiconv_list_get(const psiconv_list l, psiconv_u32 indx)
78	frodo	2	{
79			if (indx >= l->cur_len)
80			return NULL;
81			else
82			return ((char ) (l->els)) + indx l->el_size;
83			}
84
85	frodo	70	int psiconv_list_add(psiconv_list l, const void *el)
86	frodo	2	{
87	frodo	72	int res;
88			if ((res = psiconv_list_resize(l,l->cur_len + 1)))
89			return res;
90	frodo	2	memcpy(((char ) (l->els)) + l->cur_len l->el_size, el, l->el_size);
91			l->cur_len ++;
92	frodo	62	return 0;
93	frodo	2	}
94
95			void psiconv_list_foreach_el(psiconv_list l, void action(void *el))
96			{
97	frodo	79	psiconv_u32 i;
98	frodo	2	for (i = 0; i < l->cur_len; i ++)
99			action(psiconv_list_get(l,i));
100			}
101
102			psiconv_list psiconv_list_clone(const psiconv_list l)
103			{
104			psiconv_list l2;
105	frodo	79	psiconv_u32 i;
106	frodo	2	l2 = psiconv_list_new(l->el_size);
107	frodo	62	if (!l2)
108			return NULL;
109	frodo	2	for (i = 0; i < l->cur_len; i ++)
110	frodo	62	if (psiconv_list_add(l2,psiconv_list_get(l,i))) {
111			psiconv_list_free(l2);
112			return NULL;
113			}
114	frodo	2	return l2;
115
116			}
117
118			size_t psiconv_list_fread(psiconv_list l,size_t size, FILE *f)
119			{
120			size_t res;
121	frodo	62	if (psiconv_list_resize(l,l->cur_len + size))
122	frodo	74	return 0;
123	frodo	2	res = fread(((char ) (l->els)) + l->cur_len l->el_size,l->el_size,size,f);
124			l->cur_len += res;
125			return res;
126			}
127
128	frodo	74	int psiconv_list_fread_all(psiconv_list l, FILE *f)
129			{
130			while (!feof(f)) {
131	frodo	76	if (!psiconv_list_fread(l,1024,f) && !feof(f))
132	frodo	74	return -PSICONV_E_NOMEM;
133			}
134			return -PSICONV_E_OK;
135			}
136
137			int psiconv_list_fwrite_all(const psiconv_list l, FILE *f)
138			{
139	frodo	79	psiconv_u32 pos = 0;
140			psiconv_u32 written;
141			psiconv_u32 len = psiconv_list_length(l);
142	frodo	74	while (pos < len) {
143			if (!(written = fwrite(((char )(l->els)) + pos l->el_size,l->el_size,
144			len - pos,f)))
145			return -PSICONV_E_OTHER;
146			pos += written;
147			}
148			return -PSICONV_E_OK;
149			}
150
151	frodo	79	int psiconv_list_resize(psiconv_list l,psiconv_u32 nr)
152	frodo	2	{
153	frodo	62	void * temp;
154	frodo	2	if (nr > l->max_len) {
155			l->max_len = 1.1 * nr;
156			l->max_len += 16 - l->max_len % 16;
157	frodo	62	temp = realloc(l->els,l->max_len * l->el_size);
158			if (temp) {
159			l->els = temp;
160	frodo	76	return -PSICONV_E_OK;
161	frodo	62	} else
162			return -PSICONV_E_NOMEM;
163	frodo	2	}
164	frodo	76	return -PSICONV_E_OK;
165	frodo	2	}
166
167	frodo	72	int psiconv_list_concat(psiconv_list l, const psiconv_list extra)
168			{
169			int res;
170	frodo	76	if (l->el_size != extra->el_size)
171			return -PSICONV_E_OTHER;
172	frodo	72	if ((res = psiconv_list_resize(l,
173	frodo	76	l->cur_len + extra->cur_len)))
174	frodo	72	return res;
175			/* Unreadable but correct. */
176			memcpy(((char ) (l->els)) + l->cur_len l->el_size,extra->els,
177			extra->cur_len * extra->el_size);
178	frodo	76	l->cur_len += extra->cur_len;
179	frodo	72	return 0;
180			}
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