118 lines
4.1 KiB
C
118 lines
4.1 KiB
C
// a mini library of useful types and functions
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#ifndef _INCLUDED_MINILIB_H
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#define _INCLUDED_MINILIB_H
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/** types *******************************************************/
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#include <stdbool.h>
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typedef unsigned char byte;
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typedef unsigned int uint;
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/** generic ops *************************************************/
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#ifndef MIN
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#define MIN(x, y) ((x) < (y) ? (x) : (y))
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#endif
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#ifndef MAX
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#define MAX(x, y) ((x) > (y) ? (x) : (y))
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#endif
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/** memomry allocation ******************************************/
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// TODO make a lazy m_renew that can increase by a smaller amount than requested (but by at least 1 more element)
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#define m_new(type, num) ((type*)(m_malloc(sizeof(type) * (num))))
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#define m_new0(type, num) ((type*)(m_malloc0(sizeof(type) * (num))))
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#define m_new_obj(type) (m_new(type, 1))
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#define m_new_obj_var(obj_type, var_type, var_num) ((obj_type*)m_malloc(sizeof(obj_type) + sizeof(var_type) * (var_num)))
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#define m_renew(type, ptr, old_num, new_num) ((type*)(m_realloc((ptr), sizeof(type) * (old_num), sizeof(type) * (new_num))))
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#define m_del(type, ptr, num) m_free(ptr, sizeof(type) * (num))
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#define m_del_obj(type, ptr) (m_del(type, ptr, 1))
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#define m_del_var(obj_type, var_type, var_num, ptr) (m_free(ptr, sizeof(obj_type) + sizeof(var_type) * (var_num)))
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void *m_malloc(int num_bytes);
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void *m_malloc0(int num_bytes);
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void *m_realloc(void *ptr, int old_num_bytes, int new_num_bytes);
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void m_free(void *ptr, int num_bytes);
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int m_get_total_bytes_allocated(void);
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int m_get_current_bytes_allocated(void);
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int m_get_peak_bytes_allocated(void);
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/** unichar / UTF-8 *********************************************/
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typedef int unichar; // TODO
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unichar utf8_get_char(const char *s);
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char *utf8_next_char(const char *s);
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bool unichar_isspace(unichar c);
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bool unichar_isalpha(unichar c);
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bool unichar_isprint(unichar c);
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bool unichar_isdigit(unichar c);
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bool unichar_isxdigit(unichar c);
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/** variable string *********************************************/
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typedef struct _vstr_t {
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uint alloc;
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uint len;
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char *buf;
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bool had_error : 1;
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bool fixed_buf : 1;
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} vstr_t;
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// convenience macro to declare a vstr with a fixed size buffer on the stack
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#define VSTR_FIXED(vstr, alloc) vstr_t vstr; char vstr##_buf[(alloc)]; vstr_init_fixed_buf(&vstr, (alloc), vstr##_buf);
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void vstr_init(vstr_t *vstr, int alloc);
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void vstr_init_fixed_buf(vstr_t *vstr, int alloc, char *buf);
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void vstr_clear(vstr_t *vstr);
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vstr_t *vstr_new(void);
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vstr_t *vstr_new_size(int alloc);
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void vstr_free(vstr_t *vstr);
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void vstr_reset(vstr_t *vstr);
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bool vstr_had_error(vstr_t *vstr);
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char *vstr_str(vstr_t *vstr);
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int vstr_len(vstr_t *vstr);
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void vstr_hint_size(vstr_t *vstr, int size);
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char *vstr_extend(vstr_t *vstr, int size);
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bool vstr_set_size(vstr_t *vstr, int size);
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bool vstr_shrink(vstr_t *vstr);
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char *vstr_add_len(vstr_t *vstr, int len);
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void vstr_add_byte(vstr_t *vstr, byte v);
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void vstr_add_char(vstr_t *vstr, unichar chr);
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void vstr_add_str(vstr_t *vstr, const char *str);
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void vstr_add_strn(vstr_t *vstr, const char *str, int len);
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//void vstr_add_le16(vstr_t *vstr, unsigned short v);
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//void vstr_add_le32(vstr_t *vstr, unsigned int v);
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void vstr_ins_byte(vstr_t *vstr, uint byte_pos, byte b);
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void vstr_ins_char(vstr_t *vstr, uint char_pos, unichar chr);
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void vstr_cut_head_bytes(vstr_t *vstr, uint bytes_to_cut);
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void vstr_cut_tail_bytes(vstr_t *vstr, uint bytes_to_cut);
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void vstr_cut_out_bytes(vstr_t *vstr, uint byte_pos, uint bytes_to_cut);
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void vstr_printf(vstr_t *vstr, const char *fmt, ...);
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/** non-dynamic size-bounded variable buffer/string *************/
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#define CHECKBUF(buf, max_size) char buf[max_size + 1]; uint buf##_len = max_size; char *buf##_p = buf;
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#define CHECKBUF_RESET(buf, max_size) buf##_len = max_size; buf##_p = buf;
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#define CHECKBUF_APPEND(buf, src, src_len) \
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{ int l = MIN(src_len, buf##_len); \
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memcpy(buf##_p, src, l); \
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buf##_len -= l; \
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buf##_p += l; }
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#define CHECKBUF_APPEND_0(buf) { *buf##_p = 0; }
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#define CHECKBUF_LEN(buf) (buf##_p - buf)
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#ifdef va_start
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void vstr_vprintf(vstr_t *vstr, const char *fmt, va_list ap);
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#endif
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// Debugging helpers
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int DEBUG_printf(const char *fmt, ...);
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#endif // _INCLUDED_MINILIB_H
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