919 lines
24 KiB
C++
919 lines
24 KiB
C++
/*
|
|
WString.cpp - String library for Wiring & Arduino
|
|
...mostly rewritten by Paul Stoffregen...
|
|
Copyright (c) 2009-10 Hernando Barragan. All rights reserved.
|
|
Copyright 2011, Paul Stoffregen, paul@pjrc.com
|
|
Modified by Ivan Grokhotkov, 2014 - esp8266 support
|
|
Modified by Michael C. Miller, 2015 - esp8266 progmem support
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
This library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <Arduino.h>
|
|
#include "WString.h"
|
|
#include "stdlib_noniso.h"
|
|
#include "esp32-hal-log.h"
|
|
|
|
/*********************************************/
|
|
/* Constructors */
|
|
/*********************************************/
|
|
|
|
String::String(const char *cstr) {
|
|
init();
|
|
if (cstr)
|
|
copy(cstr, strlen(cstr));
|
|
}
|
|
|
|
String::String(const char *cstr, unsigned int length) {
|
|
init();
|
|
if (cstr)
|
|
copy(cstr, length);
|
|
}
|
|
|
|
String::String(const String &value) {
|
|
init();
|
|
*this = value;
|
|
}
|
|
|
|
String::String(const __FlashStringHelper *pstr) {
|
|
init();
|
|
*this = pstr; // see operator =
|
|
}
|
|
|
|
#ifdef __GXX_EXPERIMENTAL_CXX0X__
|
|
String::String(String &&rval) {
|
|
init();
|
|
move(rval);
|
|
}
|
|
|
|
String::String(StringSumHelper &&rval) {
|
|
init();
|
|
move(rval);
|
|
}
|
|
#endif
|
|
|
|
String::String(char c) {
|
|
init();
|
|
char buf[] = { c, '\0' };
|
|
*this = buf;
|
|
}
|
|
|
|
String::String(unsigned char value, unsigned char base) {
|
|
init();
|
|
char buf[1 + 8 * sizeof(unsigned char)];
|
|
utoa(value, buf, base);
|
|
*this = buf;
|
|
}
|
|
|
|
String::String(int value, unsigned char base) {
|
|
init();
|
|
char buf[2 + 8 * sizeof(int)];
|
|
if (base == 10) {
|
|
sprintf(buf, "%d", value);
|
|
} else {
|
|
itoa(value, buf, base);
|
|
}
|
|
*this = buf;
|
|
}
|
|
|
|
String::String(unsigned int value, unsigned char base) {
|
|
init();
|
|
char buf[1 + 8 * sizeof(unsigned int)];
|
|
utoa(value, buf, base);
|
|
*this = buf;
|
|
}
|
|
|
|
String::String(long value, unsigned char base) {
|
|
init();
|
|
char buf[2 + 8 * sizeof(long)];
|
|
if (base==10) {
|
|
sprintf(buf, "%ld", value);
|
|
} else {
|
|
ltoa(value, buf, base);
|
|
}
|
|
*this = buf;
|
|
}
|
|
|
|
String::String(unsigned long value, unsigned char base) {
|
|
init();
|
|
char buf[1 + 8 * sizeof(unsigned long)];
|
|
ultoa(value, buf, base);
|
|
*this = buf;
|
|
}
|
|
|
|
String::String(float value, unsigned int decimalPlaces) {
|
|
init();
|
|
char *buf = (char*)malloc(decimalPlaces + 42);
|
|
if (buf) {
|
|
*this = dtostrf(value, (decimalPlaces + 2), decimalPlaces, buf);
|
|
free(buf);
|
|
} else {
|
|
*this = "nan";
|
|
log_e("No enought memory for the operation.");
|
|
}
|
|
}
|
|
|
|
String::String(double value, unsigned int decimalPlaces) {
|
|
init();
|
|
char *buf = (char*)malloc(decimalPlaces + 312);
|
|
if (buf) {
|
|
*this = dtostrf(value, (decimalPlaces + 2), decimalPlaces, buf);
|
|
free(buf);
|
|
} else {
|
|
*this = "nan";
|
|
log_e("No enought memory for the operation.");
|
|
}
|
|
}
|
|
|
|
String::String(long long value, unsigned char base) {
|
|
init();
|
|
char buf[2 + 8 * sizeof(long long)];
|
|
if (base==10) {
|
|
sprintf(buf, "%lld", value); // NOT SURE - NewLib Nano ... does it support %lld?
|
|
} else {
|
|
lltoa(value, buf, base);
|
|
}
|
|
*this = buf;
|
|
}
|
|
|
|
String::String(unsigned long long value, unsigned char base) {
|
|
init();
|
|
char buf[1 + 8 * sizeof(unsigned long long)];
|
|
ulltoa(value, buf, base);
|
|
*this = buf;
|
|
}
|
|
|
|
String::~String() {
|
|
invalidate();
|
|
}
|
|
|
|
// /*********************************************/
|
|
// /* Memory Management */
|
|
// /*********************************************/
|
|
|
|
inline void String::init(void) {
|
|
setSSO(false);
|
|
setBuffer(nullptr);
|
|
setCapacity(0);
|
|
setLen(0);
|
|
}
|
|
|
|
void String::invalidate(void) {
|
|
if(!isSSO() && wbuffer())
|
|
free(wbuffer());
|
|
init();
|
|
}
|
|
|
|
unsigned char String::reserve(unsigned int size) {
|
|
if(buffer() && capacity() >= size)
|
|
return 1;
|
|
if(changeBuffer(size)) {
|
|
if(len() == 0)
|
|
wbuffer()[0] = 0;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
unsigned char String::changeBuffer(unsigned int maxStrLen) {
|
|
// Can we use SSO here to avoid allocation?
|
|
if (maxStrLen < sizeof(sso.buff) - 1) {
|
|
if (isSSO() || !buffer()) {
|
|
// Already using SSO, nothing to do
|
|
uint16_t oldLen = len();
|
|
setSSO(true);
|
|
setLen(oldLen);
|
|
return 1;
|
|
} else { // if bufptr && !isSSO()
|
|
// Using bufptr, need to shrink into sso.buff
|
|
char temp[sizeof(sso.buff)];
|
|
memcpy(temp, buffer(), maxStrLen);
|
|
free(wbuffer());
|
|
uint16_t oldLen = len();
|
|
setSSO(true);
|
|
memcpy(wbuffer(), temp, maxStrLen);
|
|
setLen(oldLen);
|
|
return 1;
|
|
}
|
|
}
|
|
// Fallthrough to normal allocator
|
|
size_t newSize = (maxStrLen + 16) & (~0xf);
|
|
// Make sure we can fit newsize in the buffer
|
|
if (newSize > CAPACITY_MAX) {
|
|
return false;
|
|
}
|
|
uint16_t oldLen = len();
|
|
char *newbuffer = (char *) realloc(isSSO() ? nullptr : wbuffer(), newSize);
|
|
if (newbuffer) {
|
|
size_t oldSize = capacity() + 1; // include NULL.
|
|
if (isSSO()) {
|
|
// Copy the SSO buffer into allocated space
|
|
memmove(newbuffer, sso.buff, sizeof(sso.buff));
|
|
}
|
|
if (newSize > oldSize)
|
|
{
|
|
memset(newbuffer + oldSize, 0, newSize - oldSize);
|
|
}
|
|
setSSO(false);
|
|
setCapacity(newSize - 1);
|
|
setBuffer(newbuffer);
|
|
setLen(oldLen); // Needed in case of SSO where len() never existed
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// /*********************************************/
|
|
// /* Copy and Move */
|
|
// /*********************************************/
|
|
|
|
String & String::copy(const char *cstr, unsigned int length) {
|
|
if(!reserve(length)) {
|
|
invalidate();
|
|
return *this;
|
|
}
|
|
memmove(wbuffer(), cstr, length + 1);
|
|
setLen(length);
|
|
return *this;
|
|
}
|
|
|
|
String & String::copy(const __FlashStringHelper *pstr, unsigned int length) {
|
|
if (!reserve(length)) {
|
|
invalidate();
|
|
return *this;
|
|
}
|
|
memcpy_P(wbuffer(), (PGM_P)pstr, length + 1); // We know wbuffer() cannot ever be in PROGMEM, so memcpy safe here
|
|
setLen(length);
|
|
return *this;
|
|
}
|
|
|
|
#ifdef __GXX_EXPERIMENTAL_CXX0X__
|
|
void String::move(String &rhs) {
|
|
if(buffer()) {
|
|
if(capacity() >= rhs.len()) {
|
|
memmove(wbuffer(), rhs.buffer(), rhs.length() + 1);
|
|
setLen(rhs.len());
|
|
rhs.invalidate();
|
|
return;
|
|
} else {
|
|
if (!isSSO()) {
|
|
free(wbuffer());
|
|
setBuffer(nullptr);
|
|
}
|
|
}
|
|
}
|
|
if (rhs.isSSO()) {
|
|
setSSO(true);
|
|
memmove(sso.buff, rhs.sso.buff, sizeof(sso.buff));
|
|
} else {
|
|
setSSO(false);
|
|
setBuffer(rhs.wbuffer());
|
|
}
|
|
setCapacity(rhs.capacity());
|
|
setLen(rhs.len());
|
|
rhs.setSSO(false);
|
|
rhs.setCapacity(0);
|
|
rhs.setBuffer(nullptr);
|
|
rhs.setLen(0);
|
|
}
|
|
#endif
|
|
|
|
String & String::operator =(const String &rhs) {
|
|
if(this == &rhs)
|
|
return *this;
|
|
|
|
if(rhs.buffer())
|
|
copy(rhs.buffer(), rhs.len());
|
|
else
|
|
invalidate();
|
|
|
|
return *this;
|
|
}
|
|
|
|
#ifdef __GXX_EXPERIMENTAL_CXX0X__
|
|
String & String::operator =(String &&rval) {
|
|
if(this != &rval)
|
|
move(rval);
|
|
return *this;
|
|
}
|
|
|
|
String & String::operator =(StringSumHelper &&rval) {
|
|
if(this != &rval)
|
|
move(rval);
|
|
return *this;
|
|
}
|
|
#endif
|
|
|
|
String & String::operator =(const char *cstr) {
|
|
if(cstr)
|
|
copy(cstr, strlen(cstr));
|
|
else
|
|
invalidate();
|
|
|
|
return *this;
|
|
}
|
|
|
|
String & String::operator =(const __FlashStringHelper *pstr) {
|
|
if(pstr)
|
|
copy(pstr, strlen_P((PGM_P)pstr));
|
|
else
|
|
invalidate();
|
|
|
|
return *this;
|
|
}
|
|
|
|
// /*********************************************/
|
|
// /* concat */
|
|
// /*********************************************/
|
|
|
|
unsigned char String::concat(const String &s) {
|
|
// Special case if we're concatting ourself (s += s;) since we may end up
|
|
// realloc'ing the buffer and moving s.buffer in the method called
|
|
if (&s == this) {
|
|
unsigned int newlen = 2 * len();
|
|
if (!s.buffer())
|
|
return 0;
|
|
if (s.len() == 0)
|
|
return 1;
|
|
if (!reserve(newlen))
|
|
return 0;
|
|
memmove(wbuffer() + len(), buffer(), len());
|
|
setLen(newlen);
|
|
wbuffer()[len()] = 0;
|
|
return 1;
|
|
} else {
|
|
return concat(s.buffer(), s.len());
|
|
}
|
|
}
|
|
|
|
unsigned char String::concat(const char *cstr, unsigned int length) {
|
|
unsigned int newlen = len() + length;
|
|
if(!cstr)
|
|
return 0;
|
|
if(length == 0)
|
|
return 1;
|
|
if(!reserve(newlen))
|
|
return 0;
|
|
if (cstr >= wbuffer() && cstr < wbuffer() + len())
|
|
// compatible with SSO in ram #6155 (case "x += x.c_str()")
|
|
memmove(wbuffer() + len(), cstr, length + 1);
|
|
else
|
|
// compatible with source in flash #6367
|
|
memcpy_P(wbuffer() + len(), cstr, length + 1);
|
|
setLen(newlen);
|
|
return 1;
|
|
}
|
|
|
|
unsigned char String::concat(const char *cstr) {
|
|
if(!cstr)
|
|
return 0;
|
|
return concat(cstr, strlen(cstr));
|
|
}
|
|
|
|
unsigned char String::concat(char c) {
|
|
char buf[] = { c, '\0' };
|
|
return concat(buf, 1);
|
|
}
|
|
|
|
unsigned char String::concat(unsigned char num) {
|
|
char buf[1 + 3 * sizeof(unsigned char)];
|
|
return concat(buf, sprintf(buf, "%d", num));
|
|
}
|
|
|
|
unsigned char String::concat(int num) {
|
|
char buf[2 + 3 * sizeof(int)];
|
|
return concat(buf, sprintf(buf, "%d", num));
|
|
}
|
|
|
|
unsigned char String::concat(unsigned int num) {
|
|
char buf[1 + 3 * sizeof(unsigned int)];
|
|
utoa(num, buf, 10);
|
|
return concat(buf, strlen(buf));
|
|
}
|
|
|
|
unsigned char String::concat(long num) {
|
|
char buf[2 + 3 * sizeof(long)];
|
|
return concat(buf, sprintf(buf, "%ld", num));
|
|
}
|
|
|
|
unsigned char String::concat(unsigned long num) {
|
|
char buf[1 + 3 * sizeof(unsigned long)];
|
|
ultoa(num, buf, 10);
|
|
return concat(buf, strlen(buf));
|
|
}
|
|
|
|
unsigned char String::concat(float num) {
|
|
char buf[20];
|
|
char* string = dtostrf(num, 4, 2, buf);
|
|
return concat(string, strlen(string));
|
|
}
|
|
|
|
unsigned char String::concat(double num) {
|
|
char buf[20];
|
|
char* string = dtostrf(num, 4, 2, buf);
|
|
return concat(string, strlen(string));
|
|
}
|
|
|
|
unsigned char String::concat(long long num) {
|
|
char buf[2 + 3 * sizeof(long long)];
|
|
return concat(buf, sprintf(buf, "%lld", num)); // NOT SURE - NewLib Nano ... does it support %lld?
|
|
}
|
|
|
|
unsigned char String::concat(unsigned long long num) {
|
|
char buf[1 + 3 * sizeof(unsigned long long)];
|
|
ulltoa(num, buf, 10);
|
|
return concat(buf, strlen(buf));
|
|
}
|
|
|
|
unsigned char String::concat(const __FlashStringHelper * str) {
|
|
if (!str) return 0;
|
|
int length = strlen_P((PGM_P)str);
|
|
if (length == 0) return 1;
|
|
unsigned int newlen = len() + length;
|
|
if (!reserve(newlen)) return 0;
|
|
memcpy_P(wbuffer() + len(), (PGM_P)str, length + 1);
|
|
setLen(newlen);
|
|
return 1;
|
|
}
|
|
|
|
/*********************************************/
|
|
/* Concatenate */
|
|
/*********************************************/
|
|
|
|
StringSumHelper & operator +(const StringSumHelper &lhs, const String &rhs) {
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if(!a.concat(rhs.buffer(), rhs.len()))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
StringSumHelper & operator +(const StringSumHelper &lhs, const char *cstr) {
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if(!cstr || !a.concat(cstr, strlen(cstr)))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
StringSumHelper & operator +(const StringSumHelper &lhs, char c) {
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if(!a.concat(c))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
StringSumHelper & operator +(const StringSumHelper &lhs, unsigned char num) {
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if(!a.concat(num))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
StringSumHelper & operator +(const StringSumHelper &lhs, int num) {
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if(!a.concat(num))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
StringSumHelper & operator +(const StringSumHelper &lhs, unsigned int num) {
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if(!a.concat(num))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
StringSumHelper & operator +(const StringSumHelper &lhs, long num) {
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if(!a.concat(num))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
StringSumHelper & operator +(const StringSumHelper &lhs, unsigned long num) {
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if(!a.concat(num))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
StringSumHelper & operator +(const StringSumHelper &lhs, float num) {
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if(!a.concat(num))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
StringSumHelper & operator +(const StringSumHelper &lhs, double num) {
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if(!a.concat(num))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
StringSumHelper & operator +(const StringSumHelper &lhs, long long num) {
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if(!a.concat(num))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
StringSumHelper & operator +(const StringSumHelper &lhs, unsigned long long num) {
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if(!a.concat(num))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
StringSumHelper & operator + (const StringSumHelper &lhs, const __FlashStringHelper *rhs)
|
|
{
|
|
StringSumHelper &a = const_cast<StringSumHelper&>(lhs);
|
|
if (!a.concat(rhs))
|
|
a.invalidate();
|
|
return a;
|
|
}
|
|
|
|
// /*********************************************/
|
|
// /* Comparison */
|
|
// /*********************************************/
|
|
|
|
int String::compareTo(const String &s) const {
|
|
if(!buffer() || !s.buffer()) {
|
|
if(s.buffer() && s.len() > 0)
|
|
return 0 - *(unsigned char *) s.buffer();
|
|
if(buffer() && len() > 0)
|
|
return *(unsigned char *) buffer();
|
|
return 0;
|
|
}
|
|
return strcmp(buffer(), s.buffer());
|
|
}
|
|
|
|
unsigned char String::equals(const String &s2) const {
|
|
return (len() == s2.len() && compareTo(s2) == 0);
|
|
}
|
|
|
|
unsigned char String::equals(const char *cstr) const {
|
|
if(len() == 0)
|
|
return (cstr == NULL || *cstr == 0);
|
|
if(cstr == NULL)
|
|
return buffer()[0] == 0;
|
|
return strcmp(buffer(), cstr) == 0;
|
|
}
|
|
|
|
unsigned char String::operator<(const String &rhs) const {
|
|
return compareTo(rhs) < 0;
|
|
}
|
|
|
|
unsigned char String::operator>(const String &rhs) const {
|
|
return compareTo(rhs) > 0;
|
|
}
|
|
|
|
unsigned char String::operator<=(const String &rhs) const {
|
|
return compareTo(rhs) <= 0;
|
|
}
|
|
|
|
unsigned char String::operator>=(const String &rhs) const {
|
|
return compareTo(rhs) >= 0;
|
|
}
|
|
|
|
unsigned char String::equalsIgnoreCase(const String &s2) const {
|
|
if(this == &s2)
|
|
return 1;
|
|
if(len() != s2.len())
|
|
return 0;
|
|
if(len() == 0)
|
|
return 1;
|
|
const char *p1 = buffer();
|
|
const char *p2 = s2.buffer();
|
|
while(*p1) {
|
|
if(tolower(*p1++) != tolower(*p2++))
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
unsigned char String::equalsConstantTime(const String &s2) const {
|
|
// To avoid possible time-based attacks present function
|
|
// compares given strings in a constant time.
|
|
if(len() != s2.len())
|
|
return 0;
|
|
//at this point lengths are the same
|
|
if(len() == 0)
|
|
return 1;
|
|
//at this point lengths are the same and non-zero
|
|
const char *p1 = buffer();
|
|
const char *p2 = s2.buffer();
|
|
unsigned int equalchars = 0;
|
|
unsigned int diffchars = 0;
|
|
while(*p1) {
|
|
if(*p1 == *p2)
|
|
++equalchars;
|
|
else
|
|
++diffchars;
|
|
++p1;
|
|
++p2;
|
|
}
|
|
//the following should force a constant time eval of the condition without a compiler "logical shortcut"
|
|
unsigned char equalcond = (equalchars == len());
|
|
unsigned char diffcond = (diffchars == 0);
|
|
return (equalcond & diffcond); //bitwise AND
|
|
}
|
|
|
|
unsigned char String::startsWith(const String &s2) const {
|
|
if(len() < s2.len())
|
|
return 0;
|
|
return startsWith(s2, 0);
|
|
}
|
|
|
|
unsigned char String::startsWith(const String &s2, unsigned int offset) const {
|
|
if(offset > (unsigned)(len() - s2.len()) || !buffer() || !s2.buffer())
|
|
return 0;
|
|
return strncmp(&buffer()[offset], s2.buffer(), s2.len()) == 0;
|
|
}
|
|
|
|
unsigned char String::endsWith(const String &s2) const {
|
|
if(len() < s2.len() || !buffer() || !s2.buffer())
|
|
return 0;
|
|
return strcmp(&buffer()[len() - s2.len()], s2.buffer()) == 0;
|
|
}
|
|
|
|
// /*********************************************/
|
|
// /* Character Access */
|
|
// /*********************************************/
|
|
|
|
char String::charAt(unsigned int loc) const {
|
|
return operator[](loc);
|
|
}
|
|
|
|
void String::setCharAt(unsigned int loc, char c) {
|
|
if(loc < len())
|
|
wbuffer()[loc] = c;
|
|
}
|
|
|
|
char & String::operator[](unsigned int index) {
|
|
static char dummy_writable_char;
|
|
if(index >= len() || !buffer()) {
|
|
dummy_writable_char = 0;
|
|
return dummy_writable_char;
|
|
}
|
|
return wbuffer()[index];
|
|
}
|
|
|
|
char String::operator[](unsigned int index) const {
|
|
if(index >= len() || !buffer())
|
|
return 0;
|
|
return buffer()[index];
|
|
}
|
|
|
|
void String::getBytes(unsigned char *buf, unsigned int bufsize, unsigned int index) const {
|
|
if(!bufsize || !buf)
|
|
return;
|
|
if(index >= len()) {
|
|
buf[0] = 0;
|
|
return;
|
|
}
|
|
unsigned int n = bufsize - 1;
|
|
if(n > len() - index)
|
|
n = len() - index;
|
|
strncpy((char *) buf, buffer() + index, n);
|
|
buf[n] = 0;
|
|
}
|
|
|
|
// /*********************************************/
|
|
// /* Search */
|
|
// /*********************************************/
|
|
|
|
int String::indexOf(char c) const {
|
|
return indexOf(c, 0);
|
|
}
|
|
|
|
int String::indexOf(char ch, unsigned int fromIndex) const {
|
|
if(fromIndex >= len())
|
|
return -1;
|
|
const char* temp = strchr(buffer() + fromIndex, ch);
|
|
if(temp == NULL)
|
|
return -1;
|
|
return temp - buffer();
|
|
}
|
|
|
|
int String::indexOf(const String &s2) const {
|
|
return indexOf(s2, 0);
|
|
}
|
|
|
|
int String::indexOf(const String &s2, unsigned int fromIndex) const {
|
|
if(fromIndex >= len())
|
|
return -1;
|
|
const char *found = strstr(buffer() + fromIndex, s2.buffer());
|
|
if(found == NULL)
|
|
return -1;
|
|
return found - buffer();
|
|
}
|
|
|
|
int String::lastIndexOf(char theChar) const {
|
|
return lastIndexOf(theChar, len() - 1);
|
|
}
|
|
|
|
int String::lastIndexOf(char ch, unsigned int fromIndex) const {
|
|
if(fromIndex >= len())
|
|
return -1;
|
|
char tempchar = buffer()[fromIndex + 1];
|
|
wbuffer()[fromIndex + 1] = '\0';
|
|
char* temp = strrchr(wbuffer(), ch);
|
|
wbuffer()[fromIndex + 1] = tempchar;
|
|
if(temp == NULL)
|
|
return -1;
|
|
return temp - buffer();
|
|
}
|
|
|
|
int String::lastIndexOf(const String &s2) const {
|
|
return lastIndexOf(s2, len() - s2.len());
|
|
}
|
|
|
|
int String::lastIndexOf(const String &s2, unsigned int fromIndex) const {
|
|
if(s2.len() == 0 || len() == 0 || s2.len() > len())
|
|
return -1;
|
|
if(fromIndex >= len())
|
|
fromIndex = len() - 1;
|
|
int found = -1;
|
|
for(char *p = wbuffer(); p <= wbuffer() + fromIndex; p++) {
|
|
p = strstr(p, s2.buffer());
|
|
if(!p)
|
|
break;
|
|
if((unsigned int) (p - wbuffer()) <= fromIndex)
|
|
found = p - buffer();
|
|
}
|
|
return found;
|
|
}
|
|
|
|
String String::substring(unsigned int left, unsigned int right) const {
|
|
if(left > right) {
|
|
unsigned int temp = right;
|
|
right = left;
|
|
left = temp;
|
|
}
|
|
String out;
|
|
if(left >= len())
|
|
return out;
|
|
if(right > len())
|
|
right = len();
|
|
out.copy(buffer() + left, right - left);
|
|
return out;
|
|
}
|
|
|
|
// /*********************************************/
|
|
// /* Modification */
|
|
// /*********************************************/
|
|
|
|
void String::replace(char find, char replace) {
|
|
if(!buffer())
|
|
return;
|
|
for(char *p = wbuffer(); *p; p++) {
|
|
if(*p == find)
|
|
*p = replace;
|
|
}
|
|
}
|
|
|
|
void String::replace(const String& find, const String& replace) {
|
|
if(len() == 0 || find.len() == 0)
|
|
return;
|
|
int diff = replace.len() - find.len();
|
|
char *readFrom = wbuffer();
|
|
char *foundAt;
|
|
if(diff == 0) {
|
|
while((foundAt = strstr(readFrom, find.buffer())) != NULL) {
|
|
memmove(foundAt, replace.buffer(), replace.len());
|
|
readFrom = foundAt + replace.len();
|
|
}
|
|
} else if(diff < 0) {
|
|
char *writeTo = wbuffer();
|
|
unsigned int l = len();
|
|
while((foundAt = strstr(readFrom, find.buffer())) != NULL) {
|
|
unsigned int n = foundAt - readFrom;
|
|
memmove(writeTo, readFrom, n);
|
|
writeTo += n;
|
|
memmove(writeTo, replace.buffer(), replace.len());
|
|
writeTo += replace.len();
|
|
readFrom = foundAt + find.len();
|
|
l += diff;
|
|
}
|
|
memmove(writeTo, readFrom, strlen(readFrom)+1);
|
|
setLen(l);
|
|
} else {
|
|
unsigned int size = len(); // compute size needed for result
|
|
while((foundAt = strstr(readFrom, find.buffer())) != NULL) {
|
|
readFrom = foundAt + find.len();
|
|
size += diff;
|
|
}
|
|
if(size == len())
|
|
return;
|
|
if(size > capacity() && !changeBuffer(size)) {
|
|
log_w("String.Replace() Insufficient space to replace string");
|
|
return;
|
|
}
|
|
int index = len() - 1;
|
|
while(index >= 0 && (index = lastIndexOf(find, index)) >= 0) {
|
|
readFrom = wbuffer() + index + find.len();
|
|
memmove(readFrom + diff, readFrom, len() - (readFrom - buffer()));
|
|
int newLen = len() + diff;
|
|
memmove(wbuffer() + index, replace.buffer(), replace.len());
|
|
setLen(newLen);
|
|
wbuffer()[newLen] = 0;
|
|
index--;
|
|
}
|
|
}
|
|
}
|
|
|
|
void String::remove(unsigned int index) {
|
|
// Pass the biggest integer as the count. The remove method
|
|
// below will take care of truncating it at the end of the
|
|
// string.
|
|
remove(index, (unsigned int) -1);
|
|
}
|
|
|
|
void String::remove(unsigned int index, unsigned int count) {
|
|
if(index >= len()) {
|
|
return;
|
|
}
|
|
if(count <= 0) {
|
|
return;
|
|
}
|
|
if(count > len() - index) {
|
|
count = len() - index;
|
|
}
|
|
char *writeTo = wbuffer() + index;
|
|
unsigned int newlen = len() - count;
|
|
memmove(writeTo, wbuffer() + index + count, newlen - index);
|
|
setLen(newlen);
|
|
wbuffer()[newlen] = 0;
|
|
}
|
|
|
|
void String::toLowerCase(void) {
|
|
if(!buffer())
|
|
return;
|
|
for(char *p = wbuffer(); *p; p++) {
|
|
*p = tolower(*p);
|
|
}
|
|
}
|
|
|
|
void String::toUpperCase(void) {
|
|
if(!buffer())
|
|
return;
|
|
for(char *p = wbuffer(); *p; p++) {
|
|
*p = toupper(*p);
|
|
}
|
|
}
|
|
|
|
void String::trim(void) {
|
|
if(!buffer() || len() == 0)
|
|
return;
|
|
char *begin = wbuffer();
|
|
while(isspace(*begin))
|
|
begin++;
|
|
char *end = wbuffer() + len() - 1;
|
|
while(isspace(*end) && end >= begin)
|
|
end--;
|
|
unsigned int newlen = end + 1 - begin;
|
|
if(begin > buffer())
|
|
memmove(wbuffer(), begin, newlen);
|
|
setLen(newlen);
|
|
wbuffer()[newlen] = 0;
|
|
}
|
|
|
|
// /*********************************************/
|
|
// /* Parsing / Conversion */
|
|
// /*********************************************/
|
|
|
|
long String::toInt(void) const {
|
|
if (buffer())
|
|
return atol(buffer());
|
|
return 0;
|
|
}
|
|
|
|
float String::toFloat(void) const {
|
|
if (buffer())
|
|
return atof(buffer());
|
|
return 0;
|
|
}
|
|
|
|
double String::toDouble(void) const
|
|
{
|
|
if (buffer())
|
|
return atof(buffer());
|
|
return 0.0;
|
|
}
|
|
|
|
// global empty string to allow returning const String& with nothing
|
|
|
|
const String emptyString;
|