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util/ASCII: add StringStartsWithCaseASCII()

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This commit is contained in:
Max Kellermann 2018-08-02 10:41:34 +02:00
parent 8581013911
commit 116edf5fce
1 changed files with 18 additions and 1 deletions
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19
src/util/ASCII.hxx
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@ -1,5 +1,5 @@
/*
* Copyright (C) 2013 Max Kellermann <max.kellermann@gmail.com>
* Copyright (C) 2013-2018 Max Kellermann <max.kellermann@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@ -30,6 +30,7 @@
#ifndef ASCII_HXX
#define ASCII_HXX
#include "StringView.hxx"
#include "Compiler.h"
#include <assert.h>
@ -69,4 +70,20 @@ StringEqualsCaseASCII(const char *a, const char *b, size_t n) noexcept
return strncasecmp(a, b, n) == 0;
}
gcc_pure gcc_nonnull_all
static inline bool
StringStartsWithCaseASCII(const char *haystack, StringView needle) noexcept
{
return StringEqualsCaseASCII(haystack, needle.data, needle.size);
}
gcc_pure gcc_nonnull_all
static inline const char *
StringAfterPrefixCaseASCII(const char *haystack, StringView needle) noexcept
{
return StringStartsWithCaseASCII(haystack, needle)
? haystack + needle.size
: nullptr;
}
#endif