base_strings.h

Go to the documentation of this file.

 
#ifndef BASE_STRING_H
#define BASE_STRING_H
 
#include "base_macros.h"
#include "base_types.h"


typedef struct String8 {
    u8   *str;  
    usize size; 
} String8;

typedef struct String8Node {
    struct String8Node *next;   
    String8         string; 
} String8Node;

typedef struct String8List {
    String8Node *first;  
    String8Node *last;   
    usize        node_count; 
    usize        total_size; 
} String8List;



#define STR8(s) ((String8){.str = (u8 *)(s), .size = sizeof(s) - 1})

#define STR8_FMT(s) (int)(s).size, (char *)(s).str



function inline String8
str8(u8 *str, usize size)
{
    String8 result = {str, size};
    return result;
}

function inline String8
str8_range(u8 *first, u8 *one_past_last)
{
    String8 result = {first, (usize)(one_past_last - first)};
    return result;
}

function inline String8
str8_cstr(const char *cstr)
{
    String8 result = {0};
    if (cstr != NULL) {
        result.str = (u8 *)cstr;
        while (cstr[result.size] != '\0') {
            result.size += 1;
        }
    }
    return result;
}

function inline String8
str8_prefix(String8 str, usize size)
{
    usize clamped_size = MIN(size, str.size);
    return str8(str.str, clamped_size);
}

function inline String8
str8_skip(String8 str, usize amt)
{
    usize clamped_amt = MIN(amt, str.size);
    return str8(str.str + clamped_amt, str.size - clamped_amt);
}

function inline String8
str8_substr(String8 str, usize first, usize one_past_last)
{
    usize clamped_first = MIN(first, str.size);
    usize clamped_opl   = MIN(one_past_last, str.size);
    usize final_first   = MIN(clamped_first, clamped_opl);
    return str8(str.str + final_first, clamped_opl - final_first);
}

function inline b32
str8_match(String8 a, String8 b)
{
    if (a.size != b.size) {
        return 0; // false
    }
    return (a.size == 0) || (memcmp(a.str, b.str, a.size) == 0);
}

 
#endif // BASE_STRING_H