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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 */
#ifndef nsCRTGlue_h__
#define nsCRTGlue_h__
#include "nscore.h"
* Scan a string for the first character that is *not* in a set of
* delimiters. If the string is only delimiter characters, the end of the
* string is returned.
* @param aDelims The set of delimiters (null-terminated)
* @param aStr The string to search (null-terminated)
const char* NS_strspnp(const char* aDelims, const char* aStr);
* Tokenize a string. This function is similar to the strtok function in the
* C standard library, but it does not use static variables to maintain state
* and is therefore thread and reentrancy-safe.
* Any leading delimiters in str are skipped. Then the string is scanned
* until an additional delimiter or end-of-string is found. The final
* delimiter is set to '\0'.
* @param aDelims The set of delimiters.
* @param aStr The string to search. This is an in-out parameter; it is
* reset to the end of the found token + 1, or to the
* end-of-string if there are no more tokens.
* @return The token. If no token is found (the string is only
* delimiter characters), nullptr is returned.
char* NS_strtok(const char* aDelims, char** aStr);
* "strlen" for char16_t strings
uint32_t NS_strlen(const char16_t* aString);
* "strcmp" for char16_t strings
int NS_strcmp(const char16_t* aStrA, const char16_t* aStrB);
* "strncmp" for char16_t strings
int NS_strncmp(const char16_t* aStrA, const char16_t* aStrB, size_t aLen);
* "strdup" for char16_t strings, uses the infallible moz_xmalloc allocator.
char16_t* NS_xstrdup(const char16_t* aString);
* "strdup", but using the infallible moz_xmalloc allocator.
char* NS_xstrdup(const char* aString);
* strndup for char16_t or char strings (normal strndup is not available on
* windows). This function will ensure that the new string is
* null-terminated. Uses the infallible moz_xmalloc allocator.
* CharT may be either char16_t or char.
template <typename CharT>
CharT* NS_xstrndup(const CharT* aString, uint32_t aLen);
// The following case-conversion methods only deal in the ascii repertoire
// A-Z and a-z
// semi-private data declarations... don't use these directly.
class nsLowerUpperUtils {
static const unsigned char kLower2Upper[256];
static const unsigned char kUpper2Lower[256];
inline char NS_ToUpper(char aChar) {
return (char)nsLowerUpperUtils::kLower2Upper[(unsigned char)aChar];
inline char NS_ToLower(char aChar) {
return (char)nsLowerUpperUtils::kUpper2Lower[(unsigned char)aChar];
bool NS_IsUpper(char aChar);
bool NS_IsLower(char aChar);
constexpr bool NS_IsAscii(const char* aString) {
while (*aString) {
if (0x80 & *aString) {
return false;
return true;
constexpr bool NS_IsAscii(const char* aString, uint32_t aLength) {
const char* end = aString + aLength;
while (aString < end) {
if (0x80 & *aString) {
return false;
return true;
constexpr bool NS_IsAsciiWhitespace(char16_t aChar) {
return aChar == ' ' || aChar == '\r' || aChar == '\n' || aChar == '\t';
void NS_MakeRandomString(char* aBuf, int32_t aBufLen);
#define FF '\f'
#define TAB '\t'
#define CRSTR "\015"
#define LFSTR "\012"
#define CRLF "\015\012" /* A CR LF equivalent string */
// We use the most restrictive filesystem as our default set of illegal filename
// characters. This is currently Windows.
#define OS_FILE_ILLEGAL_CHARACTERS "/:*?\"<>|"
// We also provide a list of all known file path separators for all filesystems.
// This can be used in replacement of FILE_PATH_SEPARATOR when you need to
// identify or replace all known path separators.
#if defined(XP_MACOSX)
#elif defined(XP_WIN)
#elif defined(XP_UNIX)
# error need_to_define_your_file_path_separator_and_maybe_illegal_characters
// Not all these control characters are illegal in all OSs, but we don't really
// want them appearing in filenames
"\001\002\003\004\005\006\007" \
"\010\011\012\013\014\015\016\017" \
"\020\021\022\023\024\025\026\027" \
#endif // nsCRTGlue_h__