77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
#include "base.h"
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//returns length of string (including \0)
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uint32 mystrlen(char* str){
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uint32 len=0;
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while(*(str++)) len++;
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return ++len;
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}
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//allocates new char[] and copies src there
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char* charbuf_copy(char* src){
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uint32 len=mystrlen(src);
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char* dst=malloc(len*sizeof(char));
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while(len-->0)
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dst[len]=src[len];
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return dst;
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}
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//compares two char buffers, NullPtr-friendly
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bool charbuf_compare(char* key0, char* key1){
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if(!key0) return key1 ? false : true;
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if(!key1) return false;
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while(*key0&&*key1)
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if(*key0++ != *key1++)
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return false;
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return true;
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}
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//multiplies char n times
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char* char_multiply(char c, uint32 n){
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char* rez=malloc(n+1);
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rez[n]=0;
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while(n-->0)
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rez[n]=c;
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return rez;
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}
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//copies str content to new char pointer value (adding '\0' at the end)
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char* string_cpToCharPtr(string str){
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char* cptr=malloc(str.length*sizeof(char)+1);
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if(str.length==0) return NULL;
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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 cptr content (excluding '\0' at the end) to new string
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string string_cpFromCharPtr(char* cptr){
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if(!cptr) return stringNull;
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string str;
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str.length=mystrlen(cptr)-1;
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str.ptr=malloc(str.length);
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for(uint32 i=0;i<str.length;i++)
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str.ptr[i]=cptr[i];
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return str;
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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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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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