Set of Files to enable some Arduino examples.
Dependents: TFT_Touch_botao_v1 TFT_Touch_exemplo5_git_touch TESTE_1 TFT_Touch_exemplo6_git_touch_button_3_
WString.cpp
- Committer:
- davidprentice
- Date:
- 2021-05-11
- Revision:
- 2:81364824d56a
- Parent:
- 0:5952bbaff1c6
File content as of revision 2:81364824d56a:
/* 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 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 "WString.h" #include "itoa.h" #include "avr/dtostrf.h" /*********************************************/ /* Constructors */ /*********************************************/ String::String(const char *cstr) { init(); if (cstr) { copy(cstr, strlen(cstr)); } } String::String(const String &value) { init(); *this = value; } String::String(const __FlashStringHelper *pstr) { init(); *this = pstr; } #if __cplusplus >= 201103L || defined(__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[2]; buf[0] = c; buf[1] = 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)]; 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)]; 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 char decimalPlaces) { init(); char buf[33]; *this = dtostrf(value, (decimalPlaces + 2), decimalPlaces, buf); } String::String(double value, unsigned char decimalPlaces) { init(); char buf[33]; *this = dtostrf(value, (decimalPlaces + 2), decimalPlaces, buf); } String::~String() { free(buffer); } /*********************************************/ /* Memory Management */ /*********************************************/ inline void String::init(void) { buffer = NULL; capacity = 0; len = 0; } void String::invalidate(void) { if (buffer) { free(buffer); } buffer = NULL; capacity = len = 0; } unsigned char String::reserve(unsigned int size) { if (buffer && capacity >= size) { return 1; } if (changeBuffer(size)) { if (len == 0) { buffer[0] = 0; } return 1; } return 0; } unsigned char String::changeBuffer(unsigned int maxStrLen) { char *newbuffer = (char *)realloc(buffer, maxStrLen + 1); if (newbuffer) { buffer = newbuffer; capacity = maxStrLen; return 1; } return 0; } /*********************************************/ /* Copy and Move */ /*********************************************/ String &String::copy(const char *cstr, unsigned int length) { if (!reserve(length)) { invalidate(); return *this; } len = length; strcpy(buffer, cstr); return *this; } String &String::copy(const __FlashStringHelper *pstr, unsigned int length) { if (!reserve(length)) { invalidate(); return *this; } len = length; strcpy_P(buffer, (PGM_P)pstr); return *this; } #if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__) void String::move(String &rhs) { if (buffer) { if (rhs && capacity >= rhs.len) { strcpy(buffer, rhs.buffer); len = rhs.len; rhs.len = 0; return; } else { free(buffer); } } buffer = rhs.buffer; capacity = rhs.capacity; len = rhs.len; rhs.buffer = NULL; rhs.capacity = 0; rhs.len = 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; } #if __cplusplus >= 201103L || defined(__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) { 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; } strcpy(buffer + len, cstr); len = 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[2]; buf[0] = c; buf[1] = 0; return concat(buf, 1); } unsigned char String::concat(unsigned char num) { char buf[1 + 3 * sizeof(unsigned char)]; itoa(num, buf, 10); return concat(buf, strlen(buf)); } unsigned char String::concat(int num) { char buf[2 + 3 * sizeof(int)]; itoa(num, buf, 10); return concat(buf, strlen(buf)); } 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)]; ltoa(num, buf, 10); return concat(buf, strlen(buf)); } 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(const __FlashStringHelper *str) { if (!str) { return 0; } int length = strlen_P((const char *) str); if (length == 0) { return 1; } unsigned int newlen = len + length; if (!reserve(newlen)) { return 0; } strcpy_P(buffer + len, (const char *) str); len = 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, 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::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 > 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) { buffer[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 buffer[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]; buffer[fromIndex + 1] = '\0'; char *temp = strrchr(buffer, ch); buffer[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 = buffer; p <= buffer + fromIndex; p++) { p = strstr(p, s2.buffer); if (!p) { break; } if ((unsigned int)(p - buffer) <= 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; } char temp = buffer[right]; // save the replaced character buffer[right] = '\0'; out = buffer + left; // pointer arithmetic buffer[right] = temp; //restore character return out; } /*********************************************/ /* Modification */ /*********************************************/ void String::replace(char find, char replace) { if (!buffer) { return; } for (char *p = buffer; *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 = buffer; char *foundAt; if (diff == 0) { while ((foundAt = strstr(readFrom, find.buffer)) != NULL) { memcpy(foundAt, replace.buffer, replace.len); readFrom = foundAt + replace.len; } } else if (diff < 0) { char *writeTo = buffer; while ((foundAt = strstr(readFrom, find.buffer)) != NULL) { unsigned int n = foundAt - readFrom; memcpy(writeTo, readFrom, n); writeTo += n; memcpy(writeTo, replace.buffer, replace.len); writeTo += replace.len; readFrom = foundAt + find.len; len += diff; } strcpy(writeTo, readFrom); } 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)) { return; // XXX: tell user! } int index = len - 1; while (index >= 0 && (index = lastIndexOf(find, index)) >= 0) { readFrom = buffer + index + find.len; memmove(readFrom + diff, readFrom, len - (readFrom - buffer)); len += diff; buffer[len] = 0; memcpy(buffer + index, replace.buffer, replace.len); 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 = buffer + index; len = len - count; memmove(writeTo, buffer + index + count, len - index); buffer[len] = 0; } void String::toLowerCase(void) { if (!buffer) { return; } for (char *p = buffer; *p; p++) { *p = tolower(*p); } } void String::toUpperCase(void) { if (!buffer) { return; } for (char *p = buffer; *p; p++) { *p = toupper(*p); } } void String::trim(void) { if (!buffer || len == 0) { return; } char *begin = buffer; while (isspace(*begin)) { begin++; } char *end = buffer + len - 1; while (isspace(*end) && end >= begin) { end--; } len = end + 1 - begin; if (begin > buffer) { memcpy(buffer, begin, len); } buffer[len] = 0; } /*********************************************/ /* Parsing / Conversion */ /*********************************************/ long String::toInt(void) const { if (buffer) { return atol(buffer); } return 0; } float String::toFloat(void) const { return float(toDouble()); } double String::toDouble(void) const { if (buffer) { return atof(buffer); } return 0; }