File: str.c

package info (click to toggle)
gnu-smalltalk 3.2.4-2.1
  • links: PTS, VCS
  • area: main
  • in suites: jessie, jessie-kfreebsd
  • size: 32,688 kB
  • ctags: 14,104
  • sloc: ansic: 87,424; sh: 22,729; asm: 8,465; perl: 4,513; cpp: 3,548; xml: 1,669; awk: 1,581; yacc: 1,357; makefile: 1,237; lisp: 855; lex: 843; sed: 258; objc: 124
file content (132 lines) | stat: -rw-r--r-- 3,800 bytes parent folder | download | duplicates (6)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/******************************** -*- C -*- ****************************
 *
 *	Simple String Functions
 *
 *
 ***********************************************************************/

/***********************************************************************
 *
 * Copyright 1988,89,90,91,92,94,95,99,2000,2001,2002,2006
 * Free Software Foundation, Inc.
 * Written by Steve Byrne.
 *
 * This file is part of GNU Smalltalk.
 *
 * GNU Smalltalk 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, or (at your option) any later 
 * version.
 * 
 * Linking GNU Smalltalk statically or dynamically with other modules is
 * making a combined work based on GNU Smalltalk.  Thus, the terms and
 * conditions of the GNU General Public License cover the whole
 * combination.
 *
 * In addition, as a special exception, the Free Software Foundation
 * give you permission to combine GNU Smalltalk with free software
 * programs or libraries that are released under the GNU LGPL and with
 * independent programs running under the GNU Smalltalk virtual machine.
 *
 * You may copy and distribute such a system following the terms of the
 * GNU GPL for GNU Smalltalk and the licenses of the other code
 * concerned, provided that you include the source code of that other
 * code when and as the GNU GPL requires distribution of source code.
 *
 * Note that people who make modified versions of GNU Smalltalk are not
 * obligated to grant this special exception for their modified
 * versions; it is their choice whether to do so.  The GNU General
 * Public License gives permission to release a modified version without
 * this exception; this exception also makes it possible to release a
 * modified version which carries forward this exception.
 *
 * GNU Smalltalk 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
 * GNU Smalltalk; see the file COPYING.  If not, write to the Free Software
 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  
 *
 ***********************************************************************/


#include "gstpriv.h"

#define	STRING_BASE_SIZE	128

/* This variable holds the base of the buffer maintained by this
   module.  */
static char *buf_base = NULL;

/* This variable holds the size of the currently filled part of the
   buffer.  */
static size_t cur_len = 0;

/* This variable holds the current size of the buffer.  */
static size_t max_buf_len = 0;

void
_gst_add_buf_pointer (PTR ptr)
{
  if (cur_len + sizeof (PTR) > max_buf_len)
    {
      if (max_buf_len)
	{
	  max_buf_len += (max_buf_len / 2) + sizeof (PTR);
	  buf_base = (char *) xrealloc (buf_base, max_buf_len);
	}
      else
	{
	  max_buf_len = STRING_BASE_SIZE;
	  buf_base = (char *) xmalloc (max_buf_len);
	}
    }

  *((PTR *) (buf_base + cur_len)) = ptr;
  cur_len += sizeof (PTR);
}

void
_gst_add_buf_data (PTR ptr,
		   int n)
{
  if (cur_len + n > max_buf_len)
    {
      if (max_buf_len)
	{
	  max_buf_len += (max_buf_len / 2) + n;
	  buf_base = (char *) xrealloc (buf_base, max_buf_len);
	}
      else
	{
	  max_buf_len = STRING_BASE_SIZE + n;
	  buf_base = (char *) xmalloc (max_buf_len);
	}
    }

  memcpy ((PTR *) (buf_base + cur_len), ptr, n);
  cur_len += n;
}

PTR
_gst_copy_buffer (PTR where)
{
  memcpy (where, buf_base, cur_len);
  cur_len = 0;

  return (where);
}

void
_gst_reset_buffer (void)
{
  cur_len = 0;
}

size_t
_gst_buffer_size (void)
{
  return (cur_len);
}