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Types, allocators and better code split.

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This commit is contained in:
Jason Hilder
2025-02-08 07:12:42 +02:00
parent 984249fa40
commit d1d10aafa1
3 changed files with 138 additions and 62 deletions
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jh.h
+30 -62
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@@ -4,18 +4,38 @@ Heavily inspired and designed from:
* https://github.com/nothings/stb/
* https://github.com/gingerBill/gb/
This is a single header file with things I reach for often
This is a single header file that contains:
- consistent type defintions
- useful macros
- comparison functions
- array helpers
To use this library, do this in *one* C or C++ file:
To use this library, do this in *one* C:
#define JH_IMPLEMENTATION
#include "jh.h"
*/
#ifndef JH_INCLUDE_JH_H
#define JH_INCLUDE_JH_H
#ifndef JH_INCLUDED
#define JH_INCLUDED
typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
typedef uint64_t u64;
typedef char i8;
typedef int16_t i32;
typedef int32_t i32;
typedef float f32;
typedef double f64;
typedef char byte;
typedef char16_t c16;
typedef uintptr_t uptr;
typedef ptrdiff_t size;
typedef size_t usize;
int jh_read_file_to_buffer(char* file_path, char** out_buffer, int add_terminator);
void jh_sort_int_array(int* array, size_t arrlen, const char* order);
// --------------------------------------
@@ -43,6 +63,10 @@ void jh_sort_int_array(int* array, size_t arrlen, const char* order);
_a < _b ? _a : _b; \
})
#define countof(a) (size)(sizeof(a) / sizeof(*(a)))
#define lengthof(s) (countof(s) - 1)
#define assert(c) while (!(c)) __builtin_unreachable()
// --------------------------------------
// Comparison helpers:
// --------------------------------------
@@ -55,62 +79,6 @@ static inline int int_compare_desc(const void* a, const void* b) {
return (*(int*)b - *(int*)a);
}
// --------------------------------------
// FILE I/O helpers:
// --------------------------------------
// Takes file path and a buffer which will get reallocated to the full file size.
// Note: buffer still needs to be manually free'd
int hf_read_file_to_buffer(char* file_path, char** out_buffer, int add_terminator)
{
FILE *file = fopen(file_path, "rb");
if(file == NULL)
{
perror("Failed to open file.");
return -1;
}
fseek(file, 0L, SEEK_END);
long file_size = ftell(file);
if (file_size == -1)
{
perror("Failed to determine file size");
fclose(file);
return -1;
}
rewind(file);
// Reallocate memory for the buffer, check if realloc is successful
// Realloc with extra space if terminator is needed
char *buffer = realloc(*out_buffer, file_size + (add_terminator ? 1 : 0));
if (buffer == NULL)
{
perror("Memory allocation failed");
fclose(file);
return -1;
}
// Update the pointer to the newly allocated buffer
*out_buffer = buffer;
size_t bytes_read = fread(*out_buffer, 1, file_size, file);
if (bytes_read != file_size)
{
perror("Error reading file");
fclose(file);
return -1;
}
// Add null terminator if needed
if (add_terminator == 1)
{
(*out_buffer)[file_size] = '\0';
}
fclose(file);
return 0;
}
// --------------------------------------
// array helpers:
// --------------------------------------
@@ -143,4 +111,4 @@ void jh_sort_int_array(int* array, size_t arrlen, const char* order) {
}
#endif /* JH_H_IMPLEMENTATION */
#endif /* JH_INCLUDE_JH_H */
#endif /* JH_INCLUDED */
jh_io.h
+85
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@@ -0,0 +1,85 @@
/* jh_io.h - v0.01 - Jason Hilder
Heavily inspired and designed from:
* https://github.com/nothings/stb/
* https://github.com/gingerBill/gb/
This is a single header file that contains:
- useful/common I/O helpers
To use this library, do this in *one* C:
#define JH_IO_IMPLEMENTATION
#include "jh_io.h"
*/
#ifndef JH_IO_INCLUDED
#define JH_IO_INCLUDED
int jh_read_file_to_buffer(char* file_path, char** out_buffer, int add_terminator);
// --------------------------------------
// --------------------------------------
// implementation Below
// --------------------------------------
#ifdef JH_IO_IMPLEMENTATION
// --------------------------------------
// FILE I/O helpers:
// --------------------------------------
// Takes file path and a buffer which will get reallocated to the full file size.
// Note: buffer still needs to be manually free'd
int jh_read_file_to_buffer(char* file_path, char** out_buffer, int add_terminator)
{
FILE *file = fopen(file_path, "rb");
if(file == NULL)
{
perror("Failed to open file.");
return -1;
}
fseek(file, 0L, SEEK_END);
long file_size = ftell(file);
if (file_size == -1)
{
perror("Failed to determine file size");
fclose(file);
return -1;
}
rewind(file);
// Reallocate memory for the buffer, check if realloc is successful
// Realloc with extra space if terminator is needed
char *buffer = realloc(*out_buffer, file_size + (add_terminator ? 1 : 0));
if (buffer == NULL)
{
perror("Memory allocation failed");
fclose(file);
return -1;
}
// Update the pointer to the newly allocated buffer
*out_buffer = buffer;
size_t bytes_read = fread(*out_buffer, 1, file_size, file);
if (bytes_read != file_size)
{
perror("Error reading file");
fclose(file);
return -1;
}
// Add null terminator if needed
if (add_terminator == 1)
{
(*out_buffer)[file_size] = '\0';
}
fclose(file);
return 0;
}
#endif
#endif
jh_mem.h
+23
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@@ -0,0 +1,23 @@
/* jh_mem.h - v0.01 - Jason Hilder
Heavily inspired and designed from:
* https://github.com/nothings/stb/
* https://github.com/gingerBill/gb/
This is a single header file that contains:
- allocators
References:
https://www.gingerbill.org/series/memory-allocation-strategies/
A implementation of the above with changes were I felt I needed them.
To use this library, do this in *one* C:
#define JH_MEM_IMPLEMENTATION
#include "jh_io.h"
*/
#ifndef JH_MEM_INCLUDED
#define JH_MEM_INCLUDED
#endif