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35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
#ifndef NALL_STRING_STRPOS_HPP
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#define NALL_STRING_STRPOS_HPP
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//usage example:
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//if(auto pos = strpos(str, key)) print(pos(), "\n");
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//prints position of key within str, only if it is found
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namespace nall {
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template<bool Insensitive, bool Quoted>
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optional<unsigned> ustrpos(const char *str, const char *key) {
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const char *base = str;
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while(*str) {
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if(quoteskip<Quoted>(str)) continue;
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for(unsigned n = 0;; n++) {
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if(key[n] == 0) return optional<unsigned>(true, (unsigned)(str - base));
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if(str[n] == 0) return optional<unsigned>(false, 0);
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if(!chrequal<Insensitive>(str[n], key[n])) break;
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}
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str++;
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}
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return optional<unsigned>(false, 0);
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}
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optional<unsigned> strpos(const char *str, const char *key) { return ustrpos<false, false>(str, key); }
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optional<unsigned> istrpos(const char *str, const char *key) { return ustrpos<true, false>(str, key); }
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optional<unsigned> qstrpos(const char *str, const char *key) { return ustrpos<false, true>(str, key); }
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optional<unsigned> iqstrpos(const char *str, const char *key) { return ustrpos<true, true>(str, key); }
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}
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#endif
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