mirror of https://github.com/bsnes-emu/bsnes.git
53 lines
1.8 KiB
C++
Executable File
53 lines
1.8 KiB
C++
Executable File
#ifndef NALL_STRING_REPLACE_HPP
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#define NALL_STRING_REPLACE_HPP
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namespace nall {
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template<unsigned Limit, bool Insensitive, bool Quoted>
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string& string::ureplace(const char *key, const char *token) {
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if(!key || !*key) return *this;
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enum : unsigned { limit = Limit ? Limit : ~0u };
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const char *p = data;
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unsigned counter = 0, keyLength = 0;
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while(*p) {
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if(quoteskip<Quoted>(p)) continue;
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for(unsigned n = 0;; n++) {
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if(key[n] == 0) { counter++; p += n; keyLength = n; break; }
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if(!chrequal<Insensitive>(key[n], p[n])) { p++; break; }
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}
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}
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if(counter == 0) return *this;
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if(Limit) counter = min(counter, Limit);
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char *t = data, *base;
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unsigned tokenLength = strlen(token);
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if(tokenLength > keyLength) {
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t = base = strdup(data);
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reserve((unsigned)(p - data) + ((tokenLength - keyLength) * counter));
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}
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char *o = data;
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while(*t && counter) {
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if(quotecopy<Quoted>(o, t)) continue;
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for(unsigned n = 0;; n++) {
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if(key[n] == 0) { counter--; memcpy(o, token, tokenLength); t += keyLength; o += tokenLength; break; }
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if(!chrequal<Insensitive>(key[n], t[n])) { *o++ = *t++; break; }
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}
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}
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do *o++ = *t; while(*t++);
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if(tokenLength > keyLength) free(base);
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return *this;
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}
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template<unsigned Limit> string &string::replace(const char *key, const char *token) { return ureplace<Limit, false, false>(key, token); }
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template<unsigned Limit> string &string::ireplace(const char *key, const char *token) { return ureplace<Limit, true, false>(key, token); }
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template<unsigned Limit> string &string::qreplace(const char *key, const char *token) { return ureplace<Limit, false, true>(key, token); }
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template<unsigned Limit> string &string::iqreplace(const char *key, const char *token) { return ureplace<Limit, true, true>(key, token); }
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};
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#endif
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