55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
#include <exception>
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#include <stdexcept>
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#include <tools.hpp>
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#include <string_view>
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void print_help_exit(){
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throw std::runtime_error("if you want help please add \"-h\"\n");
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}
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int main(const int argc,const char *argv[]){
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try{
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if(argc==1){
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print_help_exit();
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}
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std::string argv1(argv[1]);
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if(argc==2){
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if(argv1=="-h"){
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zt::print("help:\n","\tThis is a simple string replacer to replace characters of the same length.\n","\t<string> <character to be replaced> <character to replace>\n","\t\t-By Zengtudor\n");
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return 0;
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}else{
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print_help_exit();
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}
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}else if(argc==4){
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std::string_view be_replaced(argv[2]),to_replace(argv[3]);
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if(be_replaced.size()!=to_replace.size()){
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throw std::runtime_error("The length of last two characters are not same!\n");
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}
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for(auto i: zt::Range(argv1.size())){
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if(argv1[i]==be_replaced[0]){
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for(auto j: zt::Range(be_replaced.size())){
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if(argv1[i+j]!=be_replaced[j]){
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goto out_of_match;
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}
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}
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for(auto j:zt::Range(be_replaced.size())){
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argv1[i+j]=to_replace[j];
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}
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}
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out_of_match:;
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}
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}else{
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print_help_exit();
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}
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zt::print(argv1,"\n");
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}catch(const std::exception &e){
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zt::eprint("Caught an error because:\n","\t",NAME_VALUE(e.what()),"\n");
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return -1;
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}catch(...){
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zt::eprint("Caught an unknown error,closing...\n");
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std::rethrow_exception(std::current_exception());
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}
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} |