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Delete buffer stretchy functions

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A buffer should be a strictly sized array representing a file in
memory.  No dynamic size functions.
This commit is contained in:
Aryadev Chavali
2024-12-19 08:44:10 +00:00
parent 22d1f712ae
commit 2a4d7addae
2 changed files with 1 additions and 47 deletions
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42
lib.c
View File

@@ -13,7 +13,6 @@ buffer_t *buffer_init_str(const char *name, const char *str, size_t str_size)
buffer_t *buf = malloc(sizeof(*buf) + str_size + 1);
buf->name = name;
buf->size = str_size;
buf->capacity = str_size;
if (str)
{
memcpy(buf->data, str, str_size);
@@ -22,47 +21,6 @@ buffer_t *buffer_init_str(const char *name, const char *str, size_t str_size)
return buf;
}
bool buffer_ensure(buffer_t **buffer, u64 expected)
{
if (!buffer)
return false;
else if (!*buffer)
{
*buffer = buffer_init_str(NULL, NULL, expected);
}
else if (buffer[0]->capacity <= expected)
{
buffer[0]->capacity = MAX(buffer[0]->capacity * 2, expected);
*buffer = realloc(*buffer, sizeof(**buffer) + buffer[0]->capacity);
}
return true;
}
bool buffer_ensure_relative(buffer_t **buffer, u64 expected)
{
return buffer_ensure(buffer,
buffer && *buffer ? buffer[0]->size + expected : 0);
}
bool buffer_append(buffer_t **buffer, u8 datum)
{
bool ret = buffer_ensure_relative(buffer, 1);
if (ret)
buffer[0]->data[buffer[0]->size++] = datum;
return ret;
}
bool buffer_append_bytes(buffer_t **buffer, u8 *data, u64 size)
{
bool ret = buffer_ensure_relative(buffer, size);
if (ret)
{
memcpy(buffer[0]->data + buffer[0]->size, data, size);
buffer[0]->size += size;
}
return ret;
}
void print_error(const char *handle, size_t row, size_t column,
const char *reason)
{

6
lib.h
View File

@@ -29,13 +29,9 @@ void print_error(const char *handle, size_t row, size_t column,
typedef struct Buffer
{
const char *name;
u64 size, capacity;
u64 size;
u8 data[];
} buffer_t;
buffer_t *buffer_init_str(const char *name, const char *str, size_t str_size);
bool buffer_ensure(buffer_t **buffer, u64 expected);
bool buffer_ensure_relative(buffer_t **buffer, u64 expected);
bool buffer_append(buffer_t **buffer, u8 datum);
bool buffer_append_bytes(buffer_t **buffer, u8 *data, u64 size);
#endif