3rdparty/c55lib/c55/string_util.h

3rdparty/c55lib/c55/string_util.h

@@ -0,0 +1,112 @@
+#pragma once
+#include <string>
+#include <stdio.h>
+
+namespace c55
+{
+	class Strfnd{
+		std::string tek;
+		unsigned int p;
+	public:
+		void start(std::string niinq){
+			tek = niinq;
+			p=0;
+		}
+		unsigned int where(){
+			return p;
+		}
+		void to(unsigned int i){
+			p = i;
+		}
+		std::string what(){
+			return tek;
+		}
+		// Returns true if search_for was found
+		bool next(const std::string &search_for, std::string &result){
+			if(p >= tek.size())
+				return false;
+			size_t n = tek.find(search_for, p);
+			bool did_find = (n != std::string::npos);
+			if(n == std::string::npos || search_for == "")
+				n = tek.size();
+			result = tek.substr(p, n-p);
+			p = n + search_for.length();
+			return did_find;
+		}
+		std::string next(const std::string &search_for){
+			std::string result;
+			next(search_for, result);
+			return result;
+		}
+		std::string while_any(const std::string &chars){
+			if(chars.empty())
+				return std::string();
+			if(p >= tek.size())
+				return std::string();
+			size_t n = p;
+			while(n < tek.size()){
+				bool is = false;
+				for(unsigned int i=0; i<chars.size(); i++){
+					if(chars[i] == tek[n]){
+						is = true;
+						break;
+					}
+				}
+				if(!is) break;
+				n++;
+			}
+			std::string result = tek.substr(p, n-p);
+			p = n;
+			return result;
+		}
+		bool atend(){
+			if(p>=tek.size()) return true;
+			return false;
+		}
+		Strfnd(std::string s){
+			start(s);
+		}
+	};
+
+	inline std::string trim(std::string str, const std::string &whitespace=" \t\n\r")
+	{
+		size_t endpos = str.find_last_not_of(whitespace);
+		if(std::string::npos != endpos)
+			str = str.substr(0, endpos+1);
+		size_t startpos = str.find_first_not_of(whitespace);
+		if(std::string::npos != startpos)
+			str = str.substr(startpos);
+		return str;
+	}
+
+	inline std::string vector_join(const std::vector<std::string> &v, const std::string &d=", ")
+	{
+		std::string result;
+		for(auto v1 : v)
+			result += (result.empty()?"":d) + v1;
+		return result;
+	}
+
+	inline std::string truncate_string(const std::string &str, size_t maxlen, const std::string &end="...")
+	{
+		if(str.size() < maxlen)
+			return str;
+		return str.substr(0, maxlen) + end;
+	}
+
+	inline bool string_allowed(const std::string &s, const std::string &allowed_chars)
+	{
+		for(size_t i=0; i<s.size(); i++){
+			bool confirmed = false;
+			for(size_t j=0; j<allowed_chars.size(); j++){
+				if(s[i] == allowed_chars[j]){
+					confirmed = true;
+					break;
+				}
+			}
+			if(confirmed == false)
+				return false;
+		}
+		return true;
+	}
+}