46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
#include "string.h"
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kerepTypeId_define(kerepTypeId_string);
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kerepTypeId_define(kerepTypeId_stringPtr);
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// copies str content to new char pointer value (adding '\0' at the end)
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char* string_extract(string str){
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if(str.length==0) return NULL;
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char* cptr=malloc(str.length*sizeof(char)+1);
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cptr[str.length]=0;
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while(str.length-->0)
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cptr[str.length]=str.ptr[str.length];
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return cptr;
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}
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// copies src.ptr content to new string
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string string_copy(string src){
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if(!src.ptr) return src;
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string nstr;
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nstr.length=src.length;
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nstr.ptr=malloc(nstr.length);
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for(uint32 i=0;i<nstr.length;i++)
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nstr.ptr[i]=src.ptr[i];
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return nstr;
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}
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// compares two strings, NullPtr-friendly
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bool string_compare(string str0, string str1){
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if(str0.length!=str1.length) return false;
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if(!str0.ptr) return str1.ptr ? false : true;
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else if(!str1.ptr) return false;
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while(str0.length-->0)
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if(*str0.ptr++ != *str1.ptr++)
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return false;
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return true;
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}
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// creates new string which is reversed variant of <s>
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string string_reverse(string s){
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if(s.length==0) return s;
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string r={malloc(s.length), s.length};
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for(uint32 i=0; i<s.length; i++)
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r.ptr[i]=s.ptr[s.length-i-1];
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return r;
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}
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