mirror of https://github.com/bsnes-emu/bsnes.git
42 lines
939 B
C++
Executable File
42 lines
939 B
C++
Executable File
#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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optional<unsigned> strpos(const char *str, const char *key) {
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unsigned ssl = strlen(str), ksl = strlen(key);
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if(ksl > ssl) return { false, 0 };
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for(unsigned i = 0; i <= ssl - ksl; i++) {
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if(!memcmp(str + i, key, ksl)) return { true, i };
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}
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return { false, 0 };
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}
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optional<unsigned> qstrpos(const char *str, const char *key) {
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unsigned ssl = strlen(str), ksl = strlen(key);
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if(ksl > ssl) return { false, 0 };
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for(unsigned i = 0; i <= ssl - ksl;) {
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uint8_t x = str[i];
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if(x == '\"' || x == '\'') {
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uint8_t z = i++;
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while(str[i] != x && i < ssl) i++;
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if(i >= ssl) i = z;
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}
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if(!memcmp(str + i, key, ksl)) return { true, i };
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i++;
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}
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return { false, 0 };
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}
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}
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#endif
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