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//========================================================================
//
// GString.cc
//
// Simple variable-length string type.
//
// Copyright 1996 Derek B. Noonburg
//
//========================================================================
#ifdef __GNUC__
#pragma implementation
#endif
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <ctype.h>
#include "GString.h"
static inline int size(int len) {
int delta;
delta = len < 256 ? 7 : 255;
return ((len + 1) + delta) & ~delta;
}
inline void GString::resize(int length1) {
char *s1;
if (!s) {
s = new char[size(length1)];
} else if (size(length1) != size(length)) {
s1 = new char[size(length1)];
memcpy(s1, s, length + 1);
delete[] s;
s = s1;
}
}
GString::GString() {
s = NULL;
resize(length = 0);
s[0] = '\0';
}
GString::GString(const char *s1) {
int n = strlen(s1);
s = NULL;
resize(length = n);
memcpy(s, s1, n + 1);
}
GString::GString(const char *s1, int length1) {
s = NULL;
resize(length = length1);
memcpy(s, s1, length * sizeof(char));
s[length] = '\0';
}
GString::GString(GString *str) {
s = NULL;
resize(length = str->getLength());
memcpy(s, str->getCString(), length + 1);
}
GString::GString(GString *str1, GString *str2) {
int n1 = str1->getLength();
int n2 = str2->getLength();
s = NULL;
resize(length = n1 + n2);
memcpy(s, str1->getCString(), n1);
memcpy(s + n1, str2->getCString(), n2 + 1);
}
GString::~GString() {
delete[] s;
}
GString *GString::clear() {
s[length = 0] = '\0';
resize(0);
return this;
}
GString *GString::append(char c) {
resize(length + 1);
s[length++] = c;
s[length] = '\0';
return this;
}
GString *GString::append(GString *str) {
int n = str->getLength();
resize(length + n);
memcpy(s + length, str->getCString(), n + 1);
length += n;
return this;
}
GString *GString::append(char *str) {
int n = strlen(str);
resize(length + n);
memcpy(s + length, str, n + 1);
length += n;
return this;
}
GString *GString::append(char *str, int length1) {
resize(length + length1);
memcpy(s + length, str, length1);
length += length1;
s[length] = '\0';
return this;
}
GString *GString::insert(int i, char c) {
int j;
resize(length + 1);
for (j = length + 1; j > i; --j)
s[j] = s[j-1];
s[i] = c;
++length;
return this;
}
GString *GString::insert(int i, GString *str) {
int n = str->getLength();
int j;
resize(length + n);
for (j = length; j >= i; --j)
s[j+n] = s[j];
memcpy(s+i, str->getCString(), n);
length += n;
return this;
}
GString *GString::insert(int i, char *str) {
int n = strlen(str);
int j;
resize(length + n);
for (j = length; j >= i; --j)
s[j+n] = s[j];
memcpy(s+i, str, n);
length += n;
return this;
}
GString *GString::insert(int i, char *str, int length1) {
int j;
resize(length + length1);
for (j = length; j >= i; --j)
s[j+length1] = s[j];
memcpy(s+i, str, length1);
length += length1;
return this;
}
GString *GString::del(int i, int n) {
int j;
if (n > 0) {
for (j = i; j <= length - n; ++j)
s[j] = s[j + n];
resize(length -= n);
}
return this;
}
GString *GString::upperCase() {
int i;
for (i = 0; i < length; ++i) {
if (islower(s[i]))
s[i] = toupper(s[i]);
}
return this;
}
GString *GString::lowerCase() {
int i;
for (i = 0; i < length; ++i) {
if (isupper(s[i]))
s[i] = tolower(s[i]);
}
return this;
}
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