gecko-dev/xpcom/glue/nsStringAPI.cpp

1204 строки
24 KiB
C++

/* vim:set ts=2 sw=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nscore.h"
#include "nsCRTGlue.h"
#include "prprf.h"
#include "nsStringAPI.h"
#include "nsXPCOMStrings.h"
#include "nsDebug.h"
#include <stdio.h>
#ifdef XP_WIN
#define snprintf _snprintf
#endif
// nsAString
uint32_t
nsAString::BeginReading(const char_type **begin, const char_type **end) const
{
uint32_t len = NS_StringGetData(*this, begin);
if (end)
*end = *begin + len;
return len;
}
const nsAString::char_type*
nsAString::BeginReading() const
{
const char_type *data;
NS_StringGetData(*this, &data);
return data;
}
const nsAString::char_type*
nsAString::EndReading() const
{
const char_type *data;
uint32_t len = NS_StringGetData(*this, &data);
return data + len;
}
uint32_t
nsAString::BeginWriting(char_type **begin, char_type **end, uint32_t newSize)
{
uint32_t len = NS_StringGetMutableData(*this, newSize, begin);
if (end)
*end = *begin + len;
return len;
}
nsAString::char_type*
nsAString::BeginWriting(uint32_t aLen)
{
char_type *data;
NS_StringGetMutableData(*this, aLen, &data);
return data;
}
nsAString::char_type*
nsAString::EndWriting()
{
char_type *data;
uint32_t len = NS_StringGetMutableData(*this, UINT32_MAX, &data);
return data + len;
}
bool
nsAString::SetLength(uint32_t aLen)
{
char_type *data;
NS_StringGetMutableData(*this, aLen, &data);
return data != nullptr;
}
void
nsAString::AssignLiteral(const char *aStr)
{
uint32_t len = strlen(aStr);
PRUnichar *buf = BeginWriting(len);
if (!buf)
return;
for (; *aStr; ++aStr, ++buf)
*buf = *aStr;
}
void
nsAString::AppendLiteral(const char *aASCIIStr)
{
uint32_t appendLen = strlen(aASCIIStr);
uint32_t thisLen = Length();
PRUnichar *begin, *end;
BeginWriting(&begin, &end, appendLen + thisLen);
if (!begin)
return;
for (begin += thisLen; begin < end; ++begin, ++aASCIIStr)
*begin = *aASCIIStr;
}
void
nsAString::StripChars(const char *aSet)
{
nsString copy(*this);
const char_type *source, *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
nsAString::Trim(const char *aSet, bool aLeading, bool aTrailing)
{
NS_ASSERTION(aLeading || aTrailing, "Ineffective Trim");
const PRUnichar *start, *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_StringCutData(*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_StringCutData(*this, len - cutLen, cutLen);
}
}
}
int32_t
nsAString::DefaultComparator(const char_type *a, const char_type *b,
uint32_t len)
{
for (const char_type *end = a + len; a < end; ++a, ++b) {
if (*a == *b)
continue;
return *a < *b ? -1 : 1;
}
return 0;
}
int32_t
nsAString::Compare(const char_type *other, ComparatorFunc c) const
{
const char_type *cself;
uint32_t selflen = NS_StringGetData(*this, &cself);
uint32_t otherlen = NS_strlen(other);
uint32_t comparelen = selflen <= otherlen ? selflen : otherlen;
int32_t result = c(cself, other, comparelen);
if (result == 0) {
if (selflen < otherlen)
return -1;
else if (selflen > otherlen)
return 1;
}
return result;
}
int32_t
nsAString::Compare(const self_type &other, ComparatorFunc c) const
{
const char_type *cself, *cother;
uint32_t selflen = NS_StringGetData(*this, &cself);
uint32_t otherlen = NS_StringGetData(other, &cother);
uint32_t comparelen = selflen <= otherlen ? selflen : otherlen;
int32_t result = c(cself, cother, comparelen);
if (result == 0) {
if (selflen < otherlen)
return -1;
else if (selflen > otherlen)
return 1;
}
return result;
}
bool
nsAString::Equals(const char_type *other, ComparatorFunc c) const
{
const char_type *cself;
uint32_t selflen = NS_StringGetData(*this, &cself);
uint32_t otherlen = NS_strlen(other);
if (selflen != otherlen)
return false;
return c(cself, other, selflen) == 0;
}
bool
nsAString::Equals(const self_type &other, ComparatorFunc c) const
{
const char_type *cself;
const char_type *cother;
uint32_t selflen = NS_StringGetData(*this, &cself);
uint32_t otherlen = NS_StringGetData(other, &cother);
if (selflen != otherlen)
return false;
return c(cself, cother, selflen) == 0;
}
bool
nsAString::EqualsLiteral(const char *aASCIIString) const
{
const PRUnichar *begin, *end;
BeginReading(&begin, &end);
for (; begin < end; ++begin, ++aASCIIString) {
if (!*aASCIIString || !NS_IsAscii(*begin) ||
(char) *begin != *aASCIIString) {
return false;
}
}
return *aASCIIString == '\0';
}
bool
nsAString::LowerCaseEqualsLiteral(const char *aASCIIString) const
{
const PRUnichar *begin, *end;
BeginReading(&begin, &end);
for (; begin < end; ++begin, ++aASCIIString) {
if (!*aASCIIString || !NS_IsAscii(*begin) ||
NS_ToLower((char) *begin) != *aASCIIString) {
return false;
}
}
return *aASCIIString == '\0';
}
int32_t
nsAString::Find(const self_type& aStr, uint32_t aOffset,
ComparatorFunc c) const
{
const char_type *begin, *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 (!c(cur, other, otherlen))
return cur - begin;
}
return -1;
}
static bool ns_strnmatch(const PRUnichar *aStr, const char* aSubstring,
uint32_t aLen)
{
for (; aLen; ++aStr, ++aSubstring, --aLen) {
if (!NS_IsAscii(*aStr))
return false;
if ((char) *aStr != *aSubstring)
return false;
}
return true;
}
static bool ns_strnimatch(const PRUnichar *aStr, const char* aSubstring,
uint32_t aLen)
{
for (; aLen; ++aStr, ++aSubstring, --aLen) {
if (!NS_IsAscii(*aStr))
return false;
if (NS_ToLower((char) *aStr) != NS_ToLower(*aSubstring))
return false;
}
return true;
}
int32_t
nsAString::Find(const char *aStr, uint32_t aOffset, bool aIgnoreCase) const
{
bool (*match)(const PRUnichar*, const char*, uint32_t) =
aIgnoreCase ? ns_strnimatch : ns_strnmatch;
const char_type *begin, *end;
uint32_t selflen = BeginReading(&begin, &end);
if (aOffset > selflen)
return -1;
uint32_t otherlen = strlen(aStr);
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 (match(cur, aStr, otherlen)) {
return cur - begin;
}
}
return -1;
}
int32_t
nsAString::RFind(const self_type& aStr, int32_t aOffset, ComparatorFunc c) const
{
const char_type *begin, *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 (!c(cur, other, otherlen))
return cur - begin;
}
return -1;
}
int32_t
nsAString::RFind(const char *aStr, int32_t aOffset, bool aIgnoreCase) const
{
bool (*match)(const PRUnichar*, const char*, uint32_t) =
aIgnoreCase ? ns_strnimatch : ns_strnmatch;
const char_type *begin, *end;
uint32_t selflen = BeginReading(&begin, &end);
uint32_t otherlen = strlen(aStr);
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 (match(cur, aStr, otherlen)) {
return cur - begin;
}
}
return -1;
}
int32_t
nsAString::FindChar(char_type aChar, uint32_t aOffset) const
{
const char_type *start, *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
nsAString::RFindChar(char_type aChar) const
{
const PRUnichar *start, *end;
BeginReading(&start, &end);
do {
--end;
if (*end == aChar)
return end - start;
} while (end >= start);
return -1;
}
void
nsAString::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(NS_ConvertASCIItoUTF16(buf, len));
}
// Strings
#ifndef XPCOM_GLUE_AVOID_NSPR
int32_t
nsAString::ToInteger(nsresult *aErrorCode, uint32_t aRadix) const
{
NS_ConvertUTF16toUTF8 narrow(*this);
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(narrow.get(), fmt, &result) == 1)
*aErrorCode = NS_OK;
else
*aErrorCode = NS_ERROR_FAILURE;
return result;
}
int64_t
nsAString::ToInteger64(nsresult *aErrorCode, uint32_t aRadix) const
{
NS_ConvertUTF16toUTF8 narrow(*this);
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(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 **begin, const char_type **end) const
{
uint32_t len = NS_CStringGetData(*this, begin);
if (end)
*end = *begin + 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 **begin, char_type **end, uint32_t newSize)
{
uint32_t len = NS_CStringGetMutableData(*this, newSize, begin);
if (end)
*end = *begin + 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, *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, *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 *a, const char_type *b,
uint32_t len)
{
return memcmp(a, b, len);
}
int32_t
nsACString::Compare(const char_type *other, ComparatorFunc c) const
{
const char_type *cself;
uint32_t selflen = NS_CStringGetData(*this, &cself);
uint32_t otherlen = strlen(other);
uint32_t comparelen = selflen <= otherlen ? selflen : otherlen;
int32_t result = c(cself, other, comparelen);
if (result == 0) {
if (selflen < otherlen)
return -1;
else if (selflen > otherlen)
return 1;
}
return result;
}
int32_t
nsACString::Compare(const self_type &other, ComparatorFunc c) const
{
const char_type *cself, *cother;
uint32_t selflen = NS_CStringGetData(*this, &cself);
uint32_t otherlen = NS_CStringGetData(other, &cother);
uint32_t comparelen = selflen <= otherlen ? selflen : otherlen;
int32_t result = c(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 *other, ComparatorFunc c) const
{
const char_type *cself;
uint32_t selflen = NS_CStringGetData(*this, &cself);
uint32_t otherlen = strlen(other);
if (selflen != otherlen)
return false;
return c(cself, other, selflen) == 0;
}
bool
nsACString::Equals(const self_type &other, ComparatorFunc c) const
{
const char_type *cself;
const char_type *cother;
uint32_t selflen = NS_CStringGetData(*this, &cself);
uint32_t otherlen = NS_CStringGetData(other, &cother);
if (selflen != otherlen)
return false;
return c(cself, cother, selflen) == 0;
}
int32_t
nsACString::Find(const self_type& aStr, uint32_t aOffset,
ComparatorFunc c) const
{
const char_type *begin, *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 (!c(cur, other, otherlen))
return cur - begin;
}
return -1;
}
int32_t
nsACString::Find(const char_type *aStr, ComparatorFunc c) const
{
return Find(aStr, strlen(aStr), c);
}
int32_t
nsACString::Find(const char_type *aStr, uint32_t aLen, ComparatorFunc c) const
{
const char_type *begin, *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 (!c(cur, aStr, aLen))
return cur - begin;
}
return -1;
}
int32_t
nsACString::RFind(const self_type& aStr, int32_t aOffset, ComparatorFunc c) const
{
const char_type *begin, *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 (!c(cur, other, otherlen))
return cur - begin;
}
return -1;
}
int32_t
nsACString::RFind(const char_type *aStr, ComparatorFunc c) const
{
return RFind(aStr, strlen(aStr), c);
}
int32_t
nsACString::RFind(const char_type *aStr, int32_t aLen, ComparatorFunc c) const
{
const char_type *begin, *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 (!c(cur, aStr, aLen))
return cur - begin;
}
return -1;
}
int32_t
nsACString::FindChar(char_type aChar, uint32_t aOffset) const
{
const char_type *start, *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, *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 PRUnichar* 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 PRUnichar* 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)
{
PRUnichar *start;
uint32_t len = NS_StringGetMutableData(aString, UINT32_MAX, &start);
PRUnichar *end = start + len;
PRUnichar *from = start, *to = start;
// Skip any leading whitespace
while (from < end && NS_IsAsciiWhitespace(*from))
from++;
while (from < end) {
PRUnichar 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, *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, *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, *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, *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 *a, const char *b,
uint32_t len)
{
for (const char *aend = a + len; a < aend; ++a, ++b) {
char la = NS_ToLower(*a);
char lb = NS_ToLower(*b);
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;
}