server/server/dynbuf.C

#include "global.h"

#include <cstdio>

dynbuf::dynbuf (int initial, int extend)
{
  ext = extend;
  _size = 0;

  first = last = (chunk *)salloc<char> (sizeof (chunk) + initial);
  first->alloc = sizeof (chunk) + initial;
  first->next = 0;

  ptr = first->data;
  end = ptr + initial;
}

dynbuf::~dynbuf ()
{
  _clear ();
}

void
dynbuf::_clear ()
{
  while (first)
    {
      chunk *next = first->next;

      sfree<char> ((char *)first, first->alloc);
      first = next;
    }
}

void
dynbuf::clear ()
{
  _clear ();
  _size = 0;

  first = last = (chunk *)salloc<char> (sizeof (chunk) + ext);
  first->alloc = sizeof (chunk) + ext;
  first->next = 0;

  ptr = first->data;
  end = ptr + ext;
}

void
dynbuf::finish ()
{
  // finalise current chunk
  _size += last->size = ptr - last->data;
}

void
dynbuf::_reserve (int size)
{
  finish ();

  do
    {
      ext += ext >> 1;
      ext = (ext + 15) & ~15;
    }
  while (ext < size);

  chunk *add = (chunk *) salloc<char> (sizeof (chunk) + ext);
  add->alloc = sizeof (chunk) + ext;
  add->next = 0;

  last->next = add;
  last = add;

  ptr = last->data;
  end = ptr + ext;
}

void
dynbuf::linearise (void *data)
{
  last->size = ptr - last->data;

  for (chunk *c = first; c; c = c->next)
    {
      memcpy (data, c->data, c->size);
      data = (void *)(((char *)data) + c->size);
    }
}

char *
dynbuf::linearise ()
{
  if (first->next)
    {
      finish ();

      chunk *add = (chunk *) salloc<char> (sizeof (chunk) + _size);
      add->alloc = sizeof (chunk) + _size;
      add->next = 0;

      linearise ((void *)add->data);
      _clear ();

      first = last = add;
      ptr = last->data + _size;
      end = ptr;
      _size = 0;
    }

  return first->data;
}

dynbuf::operator std::string ()
{
  // could optimise
  return std::string (linearise (), size ());
}

void
dynbuf_text::printf (const char *format, ...)
{
  int len;

  {
    force (128);

    va_list ap;
    va_start (ap, format);
    len = vsnprintf (ptr, end - ptr, format, ap);
    va_end (ap);

    assert (len >= 0); // shield against broken vsnprintf's

    // was enough room available
    if (ptr + len < end)
      {
        alloc (len);
        return;
      }
  }

  // longer, try harder
  va_list ap;
  va_start (ap, format);
  vsnprintf (force (len + 1), len + 1, format, ap);
  va_end (ap);

  alloc (len);
}

void
dynbuf_text::add (sint32 i)
{
  char buf[max_sint32_size];
  char *p = buf + sizeof (buf);
  char neg;

  uint32 val;

  if (i < 0)
    {
      neg = '-';
      val = -i;
    }
  else
    {
      neg = 0;
      val = i;
    }

  do
    {
      uint32 div = val / 10;
      *--p = '0' + char (val - div * 10);

      val = div;
    }
  while (val);

  if (neg)
    *--p = neg;

  add ((void *) p, buf + sizeof (buf) - p);
}

void
dynbuf_text::add (sint64 i)
{
  if (i > -10000000 && i < 10000000)
    {
      add (sint32 (i));
      return;
    }

  char buf[max_sint64_size];
  char *p = buf + sizeof (buf);
  char neg;

  uint64 val;

  if (i < 0)
    {
      neg = '-';
      val = -i;
    }
  else
    {
      neg = 0;
      val = i;
    }

  do
    {
      uint64 div = val / 10;
      *--p = '0' + char (val - div * 10);

      val = div;
    }
  while (val);

  if (neg)
    *--p = neg;

  add ((void *) p, buf + sizeof (buf) - p);
}
Revision:	1.10
Committed:	Thu May 3 09:26:45 2007 UTC (17 years, 1 month ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.9:	+21 -9 lines
Log Message:	only allow one range weapon to be applied at any one time, some dynbuf fixes
#	Content
1	#include "global.h"
2
3	#include <cstdio>
4
5	dynbuf::dynbuf (int initial, int extend)
6	{
7	ext = extend;
8	_size = 0;
9
10	first = last = (chunk *)salloc<char> (sizeof (chunk) + initial);
11	first->alloc = sizeof (chunk) + initial;
12	first->next = 0;
13
14	ptr = first->data;
15	end = ptr + initial;
16	}
17
18	dynbuf::~dynbuf ()
19	{
20	_clear ();
21	}
22
23	void
24	dynbuf::_clear ()
25	{
26	while (first)
27	{
28	chunk *next = first->next;
29
30	sfree<char> ((char *)first, first->alloc);
31	first = next;
32	}
33	}
34
35	void
36	dynbuf::clear ()
37	{
38	_clear ();
39	_size = 0;
40
41	first = last = (chunk *)salloc<char> (sizeof (chunk) + ext);
42	first->alloc = sizeof (chunk) + ext;
43	first->next = 0;
44
45	ptr = first->data;
46	end = ptr + ext;
47	}
48
49	void
50	dynbuf::finish ()
51	{
52	// finalise current chunk
53	_size += last->size = ptr - last->data;
54	}
55
56	void
57	dynbuf::_reserve (int size)
58	{
59	finish ();
60
61	do
62	{
63	ext += ext >> 1;
64	ext = (ext + 15) & ~15;
65	}
66	while (ext < size);
67
68	chunk add = (chunk ) salloc<char> (sizeof (chunk) + ext);
69	add->alloc = sizeof (chunk) + ext;
70	add->next = 0;
71
72	last->next = add;
73	last = add;
74
75	ptr = last->data;
76	end = ptr + ext;
77	}
78
79	void
80	dynbuf::linearise (void *data)
81	{
82	last->size = ptr - last->data;
83
84	for (chunk *c = first; c; c = c->next)
85	{
86	memcpy (data, c->data, c->size);
87	data = (void )(((char )data) + c->size);
88	}
89	}
90
91	char *
92	dynbuf::linearise ()
93	{
94	if (first->next)
95	{
96	finish ();
97
98	chunk add = (chunk ) salloc<char> (sizeof (chunk) + _size);
99	add->alloc = sizeof (chunk) + _size;
100	add->next = 0;
101
102	linearise ((void *)add->data);
103	_clear ();
104
105	first = last = add;
106	ptr = last->data + _size;
107	end = ptr;
108	_size = 0;
109	}
110
111	return first->data;
112	}
113
114	dynbuf::operator std::string ()
115	{
116	// could optimise
117	return std::string (linearise (), size ());
118	}
119
120	void
121	dynbuf_text::printf (const char *format, ...)
122	{
123	int len;
124
125	{
126	force (128);
127
128	va_list ap;
129	va_start (ap, format);
130	len = vsnprintf (ptr, end - ptr, format, ap);
131	va_end (ap);
132
133	assert (len >= 0); // shield against broken vsnprintf's
134
135	// was enough room available
136	if (ptr + len < end)
137	{
138	alloc (len);
139	return;
140	}
141	}
142
143	// longer, try harder
144	va_list ap;
145	va_start (ap, format);
146	vsnprintf (force (len + 1), len + 1, format, ap);
147	va_end (ap);
148
149	alloc (len);
150	}
151
152	void
153	dynbuf_text::add (sint32 i)
154	{
155	char buf[max_sint32_size];
156	char *p = buf + sizeof (buf);
157	char neg;
158
159	uint32 val;
160
161	if (i < 0)
162	{
163	neg = '-';
164	val = -i;
165	}
166	else
167	{
168	neg = 0;
169	val = i;
170	}
171
172	do
173	{
174	uint32 div = val / 10;
175	--p = '0' + char (val - div 10);
176
177	val = div;
178	}
179	while (val);
180
181	if (neg)
182	*--p = neg;
183
184	add ((void *) p, buf + sizeof (buf) - p);
185	}
186
187	void
188	dynbuf_text::add (sint64 i)
189	{
190	if (i > -10000000 && i < 10000000)
191	{
192	add (sint32 (i));
193	return;
194	}
195
196	char buf[max_sint64_size];
197	char *p = buf + sizeof (buf);
198	char neg;
199
200	uint64 val;
201
202	if (i < 0)
203	{
204	neg = '-';
205	val = -i;
206	}
207	else
208	{
209	neg = 0;
210	val = i;
211	}
212
213	do
214	{
215	uint64 div = val / 10;
216	--p = '0' + char (val - div 10);
217
218	val = div;
219	}
220	while (val);
221
222	if (neg)
223	*--p = neg;
224
225	add ((void *) p, buf + sizeof (buf) - p);
226	}