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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
//
// Basic Fl_String class for the Fast Light Tool Kit (FLTK).
//
// Copyright 2021 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
// https://www.fltk.org/bugs.php
//
#include <FL/Fl_String_class.H>
#include <stdio.h>
#include <string.h>
/** \file src/Fl_String.cxx
Basic Fl_String class for FLTK.
*/
static int string_count;
Fl_String::Fl_String() {
string_count++;
init();
// debug("created ()");
}
Fl_String::Fl_String(const char *str) {
string_count++;
init();
value(str);
// debug("created (str)");
}
Fl_String::Fl_String(const char *str, int size) {
string_count++;
init();
value(str, size);
// debug("created (str, size)");
}
void Fl_String::init() {
size_ = 0;
value_ = 0;
capacity_ = 0;
}
// copy constructor
Fl_String::Fl_String(const Fl_String &in) {
string_count++;
init();
value(in.value(), in.size());
// debug("copied (c'tor)");
}
// copy assignment operator
Fl_String& Fl_String::operator=(const Fl_String &in) {
if (this == &in)
return *this;
value(in.value(), in.size());
// debug("copy assigned");
return *this;
}
// assignment operator for 'const char *'
Fl_String& Fl_String::operator=(const char *in) {
value(in);
// debug("*STRING* assigned");
return *this;
}
Fl_String::~Fl_String() {
string_count--;
// debug("~Fl_String()");
delete[] value_;
}
void Fl_String::alloc_buf(int size) {
if (size < 0)
return;
if (size > 0 && size <= capacity_)
return;
if (capacity_ > 0)
return;
int new_size = (size + 1 + 15) & (~15); // round upwards
char *new_value = new char[new_size];
capacity_ = new_size - 1;
size_ = 0;
delete[] value_;
value_ = new_value;
}
void Fl_String::value(const char *str) {
value(str, str ? (int)strlen(str) : 0);
}
int Fl_String::slen() const {
if (!value_) return 0;
return (int)strlen(value_);
}
void Fl_String::value(const char *str, int len) {
if (str) {
alloc_buf(len);
size_ = len;
memcpy(value_, str, size_);
value_[size_] = '\0';
} else { // str == NULL
size_ = 0; // ignore len !
delete[] value_; // free buffer
value_ = NULL; // set null pointer (!)
capacity_ = 0; // reset capacity
}
}
int Fl_String::capacity() const {
return capacity_; // > 0 ? capacity_ - 1 : capacity_;
}
void Fl_String::release() {
delete[] value_;
value_ = 0;
size_ = 0;
capacity_ = 0;
}
// ============================= DEBUG =============================
static const char fl_string_debug = 0;
void Fl_String::debug(const char *info) const {
if (fl_string_debug) {
printf("Fl_String[%2d] '%-20s': %p, value = %p (%d/%d): '%s'.\n",
string_count, info, this, value_, size_, capacity_, value_);
}
}
void Fl_String::hexdump(const char *info) const {
if (fl_string_debug) {
debug(info);
for (int i = 0; i < size_; i++) {
if ((i & 15) == 0) {
if (i > 0) printf("\n");
printf(" [%04x %4d] ", i, i);
} else if ((i & 3) == 0)
printf(" ");
printf(" %02x", (unsigned char)value_[i]);
}
printf("\n");
}
}
|
