mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-25 01:01:52 +00:00
1313 lines
26 KiB
C++
1313 lines
26 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nscore.h"
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#include "nsCRTGlue.h"
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#include "prprf.h"
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#include "nsStringAPI.h"
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#include "nsXPCOMStrings.h"
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#include "nsDebug.h"
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#include <stdio.h>
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#if defined(_MSC_VER) && _MSC_VER < 1900
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#define snprintf _snprintf
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#endif
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// nsAString
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uint32_t
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nsAString::BeginReading(const char_type** aBegin, const char_type** aEnd) const
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{
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uint32_t len = NS_StringGetData(*this, aBegin);
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if (aEnd) {
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*aEnd = *aBegin + len;
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}
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return len;
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}
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const nsAString::char_type*
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nsAString::BeginReading() const
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{
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const char_type* data;
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NS_StringGetData(*this, &data);
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return data;
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}
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const nsAString::char_type*
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nsAString::EndReading() const
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{
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const char_type* data;
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uint32_t len = NS_StringGetData(*this, &data);
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return data + len;
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}
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uint32_t
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nsAString::BeginWriting(char_type** aBegin, char_type** aEnd, uint32_t aNewSize)
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{
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uint32_t len = NS_StringGetMutableData(*this, aNewSize, aBegin);
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if (aEnd) {
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*aEnd = *aBegin + len;
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}
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return len;
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}
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nsAString::char_type*
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nsAString::BeginWriting(uint32_t aLen)
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{
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char_type* data;
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NS_StringGetMutableData(*this, aLen, &data);
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return data;
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}
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nsAString::char_type*
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nsAString::EndWriting()
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{
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char_type* data;
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uint32_t len = NS_StringGetMutableData(*this, UINT32_MAX, &data);
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return data + len;
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}
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bool
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nsAString::SetLength(uint32_t aLen)
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{
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char_type* data;
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NS_StringGetMutableData(*this, aLen, &data);
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return data != nullptr;
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}
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void
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nsAString::AssignLiteral(const char* aStr)
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{
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uint32_t len = strlen(aStr);
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char16_t* buf = BeginWriting(len);
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if (!buf) {
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return;
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}
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for (; *aStr; ++aStr, ++buf) {
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*buf = *aStr;
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}
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}
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void
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nsAString::AppendLiteral(const char* aASCIIStr)
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{
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uint32_t appendLen = strlen(aASCIIStr);
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uint32_t thisLen = Length();
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char16_t* begin;
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char16_t* end;
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BeginWriting(&begin, &end, appendLen + thisLen);
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if (!begin) {
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return;
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}
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for (begin += thisLen; begin < end; ++begin, ++aASCIIStr) {
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*begin = *aASCIIStr;
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}
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}
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void
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nsAString::StripChars(const char* aSet)
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{
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nsString copy(*this);
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const char_type* source;
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const char_type* sourceEnd;
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copy.BeginReading(&source, &sourceEnd);
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char_type* dest;
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BeginWriting(&dest);
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if (!dest) {
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return;
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}
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char_type* curDest = dest;
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for (; source < sourceEnd; ++source) {
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const char* test;
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for (test = aSet; *test; ++test) {
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if (*source == char_type(*test)) {
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break;
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}
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}
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if (!*test) {
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// not stripped, copy this char
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*curDest = *source;
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++curDest;
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}
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}
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SetLength(curDest - dest);
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}
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void
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nsAString::Trim(const char* aSet, bool aLeading, bool aTrailing)
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{
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NS_ASSERTION(aLeading || aTrailing, "Ineffective Trim");
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const char16_t* start;
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const char16_t* end;
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uint32_t cutLen;
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if (aLeading) {
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BeginReading(&start, &end);
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for (cutLen = 0; start < end; ++start, ++cutLen) {
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const char* test;
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for (test = aSet; *test; ++test) {
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if (*test == *start) {
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break;
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}
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}
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if (!*test) {
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break;
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}
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}
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if (cutLen) {
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NS_StringCutData(*this, 0, cutLen);
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}
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}
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if (aTrailing) {
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uint32_t len = BeginReading(&start, &end);
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--end;
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for (cutLen = 0; end >= start; --end, ++cutLen) {
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const char* test;
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for (test = aSet; *test; ++test) {
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if (*test == *end) {
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break;
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}
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}
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if (!*test) {
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break;
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}
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}
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if (cutLen) {
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NS_StringCutData(*this, len - cutLen, cutLen);
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}
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}
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}
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int32_t
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nsAString::DefaultComparator(const char_type* aStrA, const char_type* aStrB,
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uint32_t aLen)
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{
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for (const char_type* end = aStrA + aLen; aStrA < end; ++aStrA, ++aStrB) {
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if (*aStrA == *aStrB) {
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continue;
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}
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return *aStrA < *aStrB ? -1 : 1;
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}
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return 0;
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}
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int32_t
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nsAString::Compare(const char_type* aOther, ComparatorFunc aComparator) const
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{
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const char_type* cself;
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uint32_t selflen = NS_StringGetData(*this, &cself);
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uint32_t otherlen = NS_strlen(aOther);
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uint32_t comparelen = selflen <= otherlen ? selflen : otherlen;
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int32_t result = aComparator(cself, aOther, comparelen);
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if (result == 0) {
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if (selflen < otherlen) {
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return -1;
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} else if (selflen > otherlen) {
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return 1;
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}
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}
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return result;
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}
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int32_t
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nsAString::Compare(const self_type& aOther, ComparatorFunc aComparator) const
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{
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const char_type* cself;
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const char_type* cother;
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uint32_t selflen = NS_StringGetData(*this, &cself);
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uint32_t otherlen = NS_StringGetData(aOther, &cother);
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uint32_t comparelen = selflen <= otherlen ? selflen : otherlen;
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int32_t result = aComparator(cself, cother, comparelen);
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if (result == 0) {
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if (selflen < otherlen) {
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return -1;
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} else if (selflen > otherlen) {
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return 1;
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}
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}
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return result;
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}
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bool
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nsAString::Equals(const char_type* aOther, ComparatorFunc aComparator) const
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{
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const char_type* cself;
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uint32_t selflen = NS_StringGetData(*this, &cself);
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uint32_t otherlen = NS_strlen(aOther);
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if (selflen != otherlen) {
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return false;
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}
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return aComparator(cself, aOther, selflen) == 0;
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}
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bool
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nsAString::Equals(const self_type& aOther, ComparatorFunc aComparator) const
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{
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const char_type* cself;
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const char_type* cother;
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uint32_t selflen = NS_StringGetData(*this, &cself);
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uint32_t otherlen = NS_StringGetData(aOther, &cother);
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if (selflen != otherlen) {
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return false;
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}
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return aComparator(cself, cother, selflen) == 0;
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}
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bool
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nsAString::EqualsLiteral(const char* aASCIIString) const
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{
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const char16_t* begin;
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const char16_t* end;
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BeginReading(&begin, &end);
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for (; begin < end; ++begin, ++aASCIIString) {
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if (!*aASCIIString || !NS_IsAscii(*begin) ||
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(char)*begin != *aASCIIString) {
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return false;
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}
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}
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return *aASCIIString == '\0';
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}
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bool
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nsAString::LowerCaseEqualsLiteral(const char* aASCIIString) const
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{
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const char16_t* begin;
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const char16_t* end;
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BeginReading(&begin, &end);
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for (; begin < end; ++begin, ++aASCIIString) {
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if (!*aASCIIString || !NS_IsAscii(*begin) ||
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NS_ToLower((char)*begin) != *aASCIIString) {
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return false;
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}
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}
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return *aASCIIString == '\0';
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}
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int32_t
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nsAString::Find(const self_type& aStr, uint32_t aOffset,
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ComparatorFunc aComparator) const
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{
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const char_type* begin;
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const char_type* end;
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uint32_t selflen = BeginReading(&begin, &end);
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if (aOffset > selflen) {
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return -1;
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}
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const char_type* other;
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uint32_t otherlen = aStr.BeginReading(&other);
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if (otherlen > selflen - aOffset) {
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return -1;
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}
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// We want to stop searching otherlen characters before the end of the string
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end -= otherlen;
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for (const char_type* cur = begin + aOffset; cur <= end; ++cur) {
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if (!aComparator(cur, other, otherlen)) {
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return cur - begin;
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}
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}
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return -1;
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}
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static bool
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ns_strnmatch(const char16_t* aStr, const char* aSubstring, uint32_t aLen)
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{
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for (; aLen; ++aStr, ++aSubstring, --aLen) {
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if (!NS_IsAscii(*aStr)) {
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return false;
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}
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if ((char)*aStr != *aSubstring) {
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return false;
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}
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}
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return true;
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}
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static bool
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ns_strnimatch(const char16_t* aStr, const char* aSubstring, uint32_t aLen)
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{
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for (; aLen; ++aStr, ++aSubstring, --aLen) {
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if (!NS_IsAscii(*aStr)) {
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return false;
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}
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if (NS_ToLower((char)*aStr) != NS_ToLower(*aSubstring)) {
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return false;
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}
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}
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return true;
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}
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int32_t
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nsAString::Find(const char* aStr, uint32_t aOffset, bool aIgnoreCase) const
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{
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bool (*match)(const char16_t*, const char*, uint32_t) =
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aIgnoreCase ? ns_strnimatch : ns_strnmatch;
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const char_type* begin;
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const char_type* end;
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uint32_t selflen = BeginReading(&begin, &end);
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if (aOffset > selflen) {
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return -1;
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}
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uint32_t otherlen = strlen(aStr);
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if (otherlen > selflen - aOffset) {
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return -1;
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}
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// We want to stop searching otherlen characters before the end of the string
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end -= otherlen;
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for (const char_type* cur = begin + aOffset; cur <= end; ++cur) {
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if (match(cur, aStr, otherlen)) {
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return cur - begin;
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}
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}
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return -1;
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}
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int32_t
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nsAString::RFind(const self_type& aStr, int32_t aOffset,
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ComparatorFunc aComparator) const
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{
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const char_type* begin;
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const char_type* end;
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uint32_t selflen = BeginReading(&begin, &end);
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const char_type* other;
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uint32_t otherlen = aStr.BeginReading(&other);
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if (selflen < otherlen) {
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return -1;
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}
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if (aOffset < 0 || uint32_t(aOffset) > (selflen - otherlen)) {
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end -= otherlen;
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} else {
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end = begin + aOffset;
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}
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for (const char_type* cur = end; cur >= begin; --cur) {
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if (!aComparator(cur, other, otherlen)) {
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return cur - begin;
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}
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}
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return -1;
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}
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int32_t
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nsAString::RFind(const char* aStr, int32_t aOffset, bool aIgnoreCase) const
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{
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bool (*match)(const char16_t*, const char*, uint32_t) =
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aIgnoreCase ? ns_strnimatch : ns_strnmatch;
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const char_type* begin;
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const char_type* end;
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uint32_t selflen = BeginReading(&begin, &end);
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uint32_t otherlen = strlen(aStr);
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if (selflen < otherlen) {
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return -1;
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}
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if (aOffset < 0 || uint32_t(aOffset) > (selflen - otherlen)) {
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end -= otherlen;
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} else {
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end = begin + aOffset;
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}
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for (const char_type* cur = end; cur >= begin; --cur) {
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if (match(cur, aStr, otherlen)) {
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return cur - begin;
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}
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}
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return -1;
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}
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int32_t
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nsAString::FindChar(char_type aChar, uint32_t aOffset) const
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{
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const char_type* start;
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const char_type* end;
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uint32_t len = BeginReading(&start, &end);
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if (aOffset > len) {
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return -1;
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}
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const char_type* cur;
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for (cur = start + aOffset; cur < end; ++cur) {
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if (*cur == aChar) {
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return cur - start;
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}
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}
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return -1;
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}
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int32_t
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nsAString::RFindChar(char_type aChar) const
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{
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const char16_t* start;
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const char16_t* end;
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BeginReading(&start, &end);
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do {
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--end;
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|
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if (*end == aChar) {
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return end - start;
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}
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} while (end >= start);
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return -1;
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}
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|
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void
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nsAString::AppendInt(int aInt, int32_t aRadix)
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{
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const char* fmt;
|
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switch (aRadix) {
|
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case 8:
|
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fmt = "%o";
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break;
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|
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case 10:
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fmt = "%d";
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break;
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|
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case 16:
|
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fmt = "%x";
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break;
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default:
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NS_ERROR("Unrecognized radix");
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fmt = "";
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|
}
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|
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char buf[20];
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int len = snprintf(buf, sizeof(buf), fmt, aInt);
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buf[sizeof(buf) - 1] = '\0';
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|
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Append(NS_ConvertASCIItoUTF16(buf, len));
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}
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|
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// Strings
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|
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#ifndef XPCOM_GLUE_AVOID_NSPR
|
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int32_t
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nsAString::ToInteger(nsresult* aErrorCode, uint32_t aRadix) const
|
|
{
|
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NS_ConvertUTF16toUTF8 narrow(*this);
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|
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const char* fmt;
|
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switch (aRadix) {
|
|
case 10:
|
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fmt = "%i";
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break;
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case 16:
|
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fmt = "%x";
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break;
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default:
|
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NS_ERROR("Unrecognized radix!");
|
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*aErrorCode = NS_ERROR_INVALID_ARG;
|
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return 0;
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}
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|
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int32_t result = 0;
|
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if (PR_sscanf(narrow.get(), fmt, &result) == 1) {
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*aErrorCode = NS_OK;
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} else {
|
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*aErrorCode = NS_ERROR_FAILURE;
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}
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|
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return result;
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}
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|
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int64_t
|
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nsAString::ToInteger64(nsresult* aErrorCode, uint32_t aRadix) const
|
|
{
|
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NS_ConvertUTF16toUTF8 narrow(*this);
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|
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const char* fmt;
|
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switch (aRadix) {
|
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case 10:
|
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fmt = "%lli";
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break;
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|
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case 16:
|
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fmt = "%llx";
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break;
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|
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default:
|
|
NS_ERROR("Unrecognized radix!");
|
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*aErrorCode = NS_ERROR_INVALID_ARG;
|
|
return 0;
|
|
}
|
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|
|
int64_t result = 0;
|
|
if (PR_sscanf(narrow.get(), fmt, &result) == 1) {
|
|
*aErrorCode = NS_OK;
|
|
} else {
|
|
*aErrorCode = NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
#endif // XPCOM_GLUE_AVOID_NSPR
|
|
|
|
// nsACString
|
|
|
|
uint32_t
|
|
nsACString::BeginReading(const char_type** aBegin, const char_type** aEnd) const
|
|
{
|
|
uint32_t len = NS_CStringGetData(*this, aBegin);
|
|
if (aEnd) {
|
|
*aEnd = *aBegin + len;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
const nsACString::char_type*
|
|
nsACString::BeginReading() const
|
|
{
|
|
const char_type* data;
|
|
NS_CStringGetData(*this, &data);
|
|
return data;
|
|
}
|
|
|
|
const nsACString::char_type*
|
|
nsACString::EndReading() const
|
|
{
|
|
const char_type* data;
|
|
uint32_t len = NS_CStringGetData(*this, &data);
|
|
return data + len;
|
|
}
|
|
|
|
uint32_t
|
|
nsACString::BeginWriting(char_type** aBegin, char_type** aEnd,
|
|
uint32_t aNewSize)
|
|
{
|
|
uint32_t len = NS_CStringGetMutableData(*this, aNewSize, aBegin);
|
|
if (aEnd) {
|
|
*aEnd = *aBegin + len;
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
nsACString::char_type*
|
|
nsACString::BeginWriting(uint32_t aLen)
|
|
{
|
|
char_type* data;
|
|
NS_CStringGetMutableData(*this, aLen, &data);
|
|
return data;
|
|
}
|
|
|
|
nsACString::char_type*
|
|
nsACString::EndWriting()
|
|
{
|
|
char_type* data;
|
|
uint32_t len = NS_CStringGetMutableData(*this, UINT32_MAX, &data);
|
|
return data + len;
|
|
}
|
|
|
|
bool
|
|
nsACString::SetLength(uint32_t aLen)
|
|
{
|
|
char_type* data;
|
|
NS_CStringGetMutableData(*this, aLen, &data);
|
|
return data != nullptr;
|
|
}
|
|
|
|
void
|
|
nsACString::StripChars(const char* aSet)
|
|
{
|
|
nsCString copy(*this);
|
|
|
|
const char_type* source;
|
|
const char_type* sourceEnd;
|
|
copy.BeginReading(&source, &sourceEnd);
|
|
|
|
char_type* dest;
|
|
BeginWriting(&dest);
|
|
if (!dest) {
|
|
return;
|
|
}
|
|
|
|
char_type* curDest = dest;
|
|
|
|
for (; source < sourceEnd; ++source) {
|
|
const char* test;
|
|
for (test = aSet; *test; ++test) {
|
|
if (*source == char_type(*test)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!*test) {
|
|
// not stripped, copy this char
|
|
*curDest = *source;
|
|
++curDest;
|
|
}
|
|
}
|
|
|
|
SetLength(curDest - dest);
|
|
}
|
|
|
|
void
|
|
nsACString::Trim(const char* aSet, bool aLeading, bool aTrailing)
|
|
{
|
|
NS_ASSERTION(aLeading || aTrailing, "Ineffective Trim");
|
|
|
|
const char* start;
|
|
const char* end;
|
|
uint32_t cutLen;
|
|
|
|
if (aLeading) {
|
|
BeginReading(&start, &end);
|
|
for (cutLen = 0; start < end; ++start, ++cutLen) {
|
|
const char* test;
|
|
for (test = aSet; *test; ++test) {
|
|
if (*test == *start) {
|
|
break;
|
|
}
|
|
}
|
|
if (!*test) {
|
|
break;
|
|
}
|
|
}
|
|
if (cutLen) {
|
|
NS_CStringCutData(*this, 0, cutLen);
|
|
}
|
|
}
|
|
if (aTrailing) {
|
|
uint32_t len = BeginReading(&start, &end);
|
|
--end;
|
|
for (cutLen = 0; end >= start; --end, ++cutLen) {
|
|
const char* test;
|
|
for (test = aSet; *test; ++test) {
|
|
if (*test == *end) {
|
|
break;
|
|
}
|
|
}
|
|
if (!*test) {
|
|
break;
|
|
}
|
|
}
|
|
if (cutLen) {
|
|
NS_CStringCutData(*this, len - cutLen, cutLen);
|
|
}
|
|
}
|
|
}
|
|
|
|
int32_t
|
|
nsACString::DefaultComparator(const char_type* aStrA, const char_type* aStrB,
|
|
uint32_t aLen)
|
|
{
|
|
return memcmp(aStrA, aStrB, aLen);
|
|
}
|
|
|
|
int32_t
|
|
nsACString::Compare(const char_type* aOther, ComparatorFunc aComparator) const
|
|
{
|
|
const char_type* cself;
|
|
uint32_t selflen = NS_CStringGetData(*this, &cself);
|
|
uint32_t otherlen = strlen(aOther);
|
|
uint32_t comparelen = selflen <= otherlen ? selflen : otherlen;
|
|
|
|
int32_t result = aComparator(cself, aOther, comparelen);
|
|
if (result == 0) {
|
|
if (selflen < otherlen) {
|
|
return -1;
|
|
} else if (selflen > otherlen) {
|
|
return 1;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
int32_t
|
|
nsACString::Compare(const self_type& aOther, ComparatorFunc aComparator) const
|
|
{
|
|
const char_type* cself;
|
|
const char_type* cother;
|
|
uint32_t selflen = NS_CStringGetData(*this, &cself);
|
|
uint32_t otherlen = NS_CStringGetData(aOther, &cother);
|
|
uint32_t comparelen = selflen <= otherlen ? selflen : otherlen;
|
|
|
|
int32_t result = aComparator(cself, cother, comparelen);
|
|
if (result == 0) {
|
|
if (selflen < otherlen) {
|
|
return -1;
|
|
} else if (selflen > otherlen) {
|
|
return 1;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
bool
|
|
nsACString::Equals(const char_type* aOther, ComparatorFunc aComparator) const
|
|
{
|
|
const char_type* cself;
|
|
uint32_t selflen = NS_CStringGetData(*this, &cself);
|
|
uint32_t otherlen = strlen(aOther);
|
|
|
|
if (selflen != otherlen) {
|
|
return false;
|
|
}
|
|
|
|
return aComparator(cself, aOther, selflen) == 0;
|
|
}
|
|
|
|
bool
|
|
nsACString::Equals(const self_type& aOther, ComparatorFunc aComparator) const
|
|
{
|
|
const char_type* cself;
|
|
const char_type* cother;
|
|
uint32_t selflen = NS_CStringGetData(*this, &cself);
|
|
uint32_t otherlen = NS_CStringGetData(aOther, &cother);
|
|
|
|
if (selflen != otherlen) {
|
|
return false;
|
|
}
|
|
|
|
return aComparator(cself, cother, selflen) == 0;
|
|
}
|
|
|
|
int32_t
|
|
nsACString::Find(const self_type& aStr, uint32_t aOffset,
|
|
ComparatorFunc aComparator) const
|
|
{
|
|
const char_type* begin;
|
|
const char_type* end;
|
|
uint32_t selflen = BeginReading(&begin, &end);
|
|
|
|
if (aOffset > selflen) {
|
|
return -1;
|
|
}
|
|
|
|
const char_type* other;
|
|
uint32_t otherlen = aStr.BeginReading(&other);
|
|
|
|
if (otherlen > selflen - aOffset) {
|
|
return -1;
|
|
}
|
|
|
|
// We want to stop searching otherlen characters before the end of the string
|
|
end -= otherlen;
|
|
|
|
for (const char_type* cur = begin + aOffset; cur <= end; ++cur) {
|
|
if (!aComparator(cur, other, otherlen)) {
|
|
return cur - begin;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int32_t
|
|
nsACString::Find(const char_type* aStr, ComparatorFunc aComparator) const
|
|
{
|
|
return Find(aStr, strlen(aStr), aComparator);
|
|
}
|
|
|
|
int32_t
|
|
nsACString::Find(const char_type* aStr, uint32_t aLen,
|
|
ComparatorFunc aComparator) const
|
|
{
|
|
const char_type* begin;
|
|
const char_type* end;
|
|
uint32_t selflen = BeginReading(&begin, &end);
|
|
|
|
if (aLen == 0) {
|
|
NS_WARNING("Searching for zero-length string.");
|
|
return -1;
|
|
}
|
|
|
|
if (aLen > selflen) {
|
|
return -1;
|
|
}
|
|
|
|
// We want to stop searching otherlen characters before the end of the string
|
|
end -= aLen;
|
|
|
|
for (const char_type* cur = begin; cur <= end; ++cur) {
|
|
if (!aComparator(cur, aStr, aLen)) {
|
|
return cur - begin;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int32_t
|
|
nsACString::RFind(const self_type& aStr, int32_t aOffset,
|
|
ComparatorFunc aComparator) const
|
|
{
|
|
const char_type* begin;
|
|
const char_type* end;
|
|
uint32_t selflen = BeginReading(&begin, &end);
|
|
|
|
const char_type* other;
|
|
uint32_t otherlen = aStr.BeginReading(&other);
|
|
|
|
if (selflen < otherlen) {
|
|
return -1;
|
|
}
|
|
|
|
if (aOffset < 0 || uint32_t(aOffset) > (selflen - otherlen)) {
|
|
end -= otherlen;
|
|
} else {
|
|
end = begin + aOffset;
|
|
}
|
|
|
|
for (const char_type* cur = end; cur >= begin; --cur) {
|
|
if (!aComparator(cur, other, otherlen)) {
|
|
return cur - begin;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int32_t
|
|
nsACString::RFind(const char_type* aStr, ComparatorFunc aComparator) const
|
|
{
|
|
return RFind(aStr, strlen(aStr), aComparator);
|
|
}
|
|
|
|
int32_t
|
|
nsACString::RFind(const char_type* aStr, int32_t aLen,
|
|
ComparatorFunc aComparator) const
|
|
{
|
|
const char_type* begin;
|
|
const char_type* end;
|
|
uint32_t selflen = BeginReading(&begin, &end);
|
|
|
|
if (aLen <= 0) {
|
|
NS_WARNING("Searching for zero-length string.");
|
|
return -1;
|
|
}
|
|
|
|
if (uint32_t(aLen) > selflen) {
|
|
return -1;
|
|
}
|
|
|
|
// We want to start searching otherlen characters before the end of the string
|
|
end -= aLen;
|
|
|
|
for (const char_type* cur = end; cur >= begin; --cur) {
|
|
if (!aComparator(cur, aStr, aLen)) {
|
|
return cur - begin;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
int32_t
|
|
nsACString::FindChar(char_type aChar, uint32_t aOffset) const
|
|
{
|
|
const char_type* start;
|
|
const char_type* end;
|
|
uint32_t len = BeginReading(&start, &end);
|
|
if (aOffset > len) {
|
|
return -1;
|
|
}
|
|
|
|
const char_type* cur;
|
|
|
|
for (cur = start + aOffset; cur < end; ++cur) {
|
|
if (*cur == aChar) {
|
|
return cur - start;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int32_t
|
|
nsACString::RFindChar(char_type aChar) const
|
|
{
|
|
const char* start;
|
|
const char* end;
|
|
BeginReading(&start, &end);
|
|
|
|
for (; end >= start; --end) {
|
|
if (*end == aChar) {
|
|
return end - start;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
void
|
|
nsACString::AppendInt(int aInt, int32_t aRadix)
|
|
{
|
|
const char* fmt;
|
|
switch (aRadix) {
|
|
case 8:
|
|
fmt = "%o";
|
|
break;
|
|
|
|
case 10:
|
|
fmt = "%d";
|
|
break;
|
|
|
|
case 16:
|
|
fmt = "%x";
|
|
break;
|
|
|
|
default:
|
|
NS_ERROR("Unrecognized radix");
|
|
fmt = "";
|
|
}
|
|
|
|
char buf[20];
|
|
int len = snprintf(buf, sizeof(buf), fmt, aInt);
|
|
buf[sizeof(buf) - 1] = '\0';
|
|
|
|
Append(buf, len);
|
|
}
|
|
|
|
#ifndef XPCOM_GLUE_AVOID_NSPR
|
|
int32_t
|
|
nsACString::ToInteger(nsresult* aErrorCode, uint32_t aRadix) const
|
|
{
|
|
const char* fmt;
|
|
switch (aRadix) {
|
|
case 10:
|
|
fmt = "%i";
|
|
break;
|
|
|
|
case 16:
|
|
fmt = "%x";
|
|
break;
|
|
|
|
default:
|
|
NS_ERROR("Unrecognized radix!");
|
|
*aErrorCode = NS_ERROR_INVALID_ARG;
|
|
return 0;
|
|
}
|
|
|
|
int32_t result = 0;
|
|
if (PR_sscanf(nsCString(*this).get(), fmt, &result) == 1) {
|
|
*aErrorCode = NS_OK;
|
|
} else {
|
|
*aErrorCode = NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int64_t
|
|
nsACString::ToInteger64(nsresult* aErrorCode, uint32_t aRadix) const
|
|
{
|
|
const char* fmt;
|
|
switch (aRadix) {
|
|
case 10:
|
|
fmt = "%lli";
|
|
break;
|
|
|
|
case 16:
|
|
fmt = "%llx";
|
|
break;
|
|
|
|
default:
|
|
NS_ERROR("Unrecognized radix!");
|
|
*aErrorCode = NS_ERROR_INVALID_ARG;
|
|
return 0;
|
|
}
|
|
|
|
int64_t result = 0;
|
|
if (PR_sscanf(nsCString(*this).get(), fmt, &result) == 1) {
|
|
*aErrorCode = NS_OK;
|
|
} else {
|
|
*aErrorCode = NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
#endif // XPCOM_GLUE_AVOID_NSPR
|
|
|
|
// Substrings
|
|
|
|
nsDependentSubstring::nsDependentSubstring(const abstract_string_type& aStr,
|
|
uint32_t aStartPos)
|
|
{
|
|
const char16_t* data;
|
|
uint32_t len = NS_StringGetData(aStr, &data);
|
|
|
|
if (aStartPos > len) {
|
|
aStartPos = len;
|
|
}
|
|
|
|
NS_StringContainerInit2(*this, data + aStartPos, len - aStartPos,
|
|
NS_STRING_CONTAINER_INIT_DEPEND |
|
|
NS_STRING_CONTAINER_INIT_SUBSTRING);
|
|
}
|
|
|
|
nsDependentSubstring::nsDependentSubstring(const abstract_string_type& aStr,
|
|
uint32_t aStartPos,
|
|
uint32_t aLength)
|
|
{
|
|
const char16_t* data;
|
|
uint32_t len = NS_StringGetData(aStr, &data);
|
|
|
|
if (aStartPos > len) {
|
|
aStartPos = len;
|
|
}
|
|
|
|
if (aStartPos + aLength > len) {
|
|
aLength = len - aStartPos;
|
|
}
|
|
|
|
NS_StringContainerInit2(*this, data + aStartPos, aLength,
|
|
NS_STRING_CONTAINER_INIT_DEPEND |
|
|
NS_STRING_CONTAINER_INIT_SUBSTRING);
|
|
}
|
|
|
|
nsDependentCSubstring::nsDependentCSubstring(const abstract_string_type& aStr,
|
|
uint32_t aStartPos)
|
|
{
|
|
const char* data;
|
|
uint32_t len = NS_CStringGetData(aStr, &data);
|
|
|
|
if (aStartPos > len) {
|
|
aStartPos = len;
|
|
}
|
|
|
|
NS_CStringContainerInit2(*this, data + aStartPos, len - aStartPos,
|
|
NS_CSTRING_CONTAINER_INIT_DEPEND |
|
|
NS_CSTRING_CONTAINER_INIT_SUBSTRING);
|
|
}
|
|
|
|
nsDependentCSubstring::nsDependentCSubstring(const abstract_string_type& aStr,
|
|
uint32_t aStartPos,
|
|
uint32_t aLength)
|
|
{
|
|
const char* data;
|
|
uint32_t len = NS_CStringGetData(aStr, &data);
|
|
|
|
if (aStartPos > len) {
|
|
aStartPos = len;
|
|
}
|
|
|
|
if (aStartPos + aLength > len) {
|
|
aLength = len - aStartPos;
|
|
}
|
|
|
|
NS_CStringContainerInit2(*this, data + aStartPos, aLength,
|
|
NS_CSTRING_CONTAINER_INIT_DEPEND |
|
|
NS_CSTRING_CONTAINER_INIT_SUBSTRING);
|
|
}
|
|
|
|
// Utils
|
|
|
|
char*
|
|
ToNewUTF8String(const nsAString& aSource)
|
|
{
|
|
nsCString temp;
|
|
CopyUTF16toUTF8(aSource, temp);
|
|
return NS_CStringCloneData(temp);
|
|
}
|
|
|
|
void
|
|
CompressWhitespace(nsAString& aString)
|
|
{
|
|
char16_t* start;
|
|
uint32_t len = NS_StringGetMutableData(aString, UINT32_MAX, &start);
|
|
char16_t* end = start + len;
|
|
char16_t* from = start;
|
|
char16_t* to = start;
|
|
|
|
// Skip any leading whitespace
|
|
while (from < end && NS_IsAsciiWhitespace(*from)) {
|
|
from++;
|
|
}
|
|
|
|
while (from < end) {
|
|
char16_t theChar = *from++;
|
|
|
|
if (NS_IsAsciiWhitespace(theChar)) {
|
|
// We found a whitespace char, so skip over any more
|
|
while (from < end && NS_IsAsciiWhitespace(*from)) {
|
|
from++;
|
|
}
|
|
|
|
// Turn all whitespace into spaces
|
|
theChar = ' ';
|
|
}
|
|
|
|
*to++ = theChar;
|
|
}
|
|
|
|
// Drop any trailing space
|
|
if (to > start && to[-1] == ' ') {
|
|
to--;
|
|
}
|
|
|
|
// Re-terminate the string
|
|
*to = '\0';
|
|
|
|
// Set the new length
|
|
aString.SetLength(to - start);
|
|
}
|
|
|
|
uint32_t
|
|
ToLowerCase(nsACString& aStr)
|
|
{
|
|
char* begin;
|
|
char* end;
|
|
uint32_t len = aStr.BeginWriting(&begin, &end);
|
|
|
|
for (; begin < end; ++begin) {
|
|
*begin = NS_ToLower(*begin);
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
uint32_t
|
|
ToUpperCase(nsACString& aStr)
|
|
{
|
|
char* begin;
|
|
char* end;
|
|
uint32_t len = aStr.BeginWriting(&begin, &end);
|
|
|
|
for (; begin < end; ++begin) {
|
|
*begin = NS_ToUpper(*begin);
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
uint32_t
|
|
ToLowerCase(const nsACString& aSrc, nsACString& aDest)
|
|
{
|
|
const char* begin;
|
|
const char* end;
|
|
uint32_t len = aSrc.BeginReading(&begin, &end);
|
|
|
|
char* dest;
|
|
NS_CStringGetMutableData(aDest, len, &dest);
|
|
|
|
for (; begin < end; ++begin, ++dest) {
|
|
*dest = NS_ToLower(*begin);
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
uint32_t
|
|
ToUpperCase(const nsACString& aSrc, nsACString& aDest)
|
|
{
|
|
const char* begin;
|
|
const char* end;
|
|
uint32_t len = aSrc.BeginReading(&begin, &end);
|
|
|
|
char* dest;
|
|
NS_CStringGetMutableData(aDest, len, &dest);
|
|
|
|
for (; begin < end; ++begin, ++dest) {
|
|
*dest = NS_ToUpper(*begin);
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
int32_t
|
|
CaseInsensitiveCompare(const char* aStrA, const char* aStrB,
|
|
uint32_t aLen)
|
|
{
|
|
for (const char* aend = aStrA + aLen; aStrA < aend; ++aStrA, ++aStrB) {
|
|
char la = NS_ToLower(*aStrA);
|
|
char lb = NS_ToLower(*aStrB);
|
|
|
|
if (la == lb) {
|
|
continue;
|
|
}
|
|
|
|
return la < lb ? -1 : 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool
|
|
ParseString(const nsACString& aSource, char aDelimiter,
|
|
nsTArray<nsCString>& aArray)
|
|
{
|
|
int32_t start = 0;
|
|
int32_t end = aSource.Length();
|
|
|
|
uint32_t oldLength = aArray.Length();
|
|
|
|
for (;;) {
|
|
int32_t delimiter = aSource.FindChar(aDelimiter, start);
|
|
if (delimiter < 0) {
|
|
delimiter = end;
|
|
}
|
|
|
|
if (delimiter != start) {
|
|
if (!aArray.AppendElement(Substring(aSource, start, delimiter - start))) {
|
|
aArray.RemoveElementsAt(oldLength, aArray.Length() - oldLength);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (delimiter == end) {
|
|
break;
|
|
}
|
|
start = ++delimiter;
|
|
if (start == end) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
#undef snprintf
|