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/*
* Copyright (C) 2000, Matias Atria
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _MDVI_COMMON_H
#define _MDVI_COMMON_H 1
#include <stdio.h>
#include <sys/types.h>
#include <math.h>
#include "sysdeps.h"
#if STDC_HEADERS
# include <string.h>
#endif
#if !defined(STDC_HEADERS) || defined(__STRICT_ANSI__)
# ifndef HAVE_STRCHR
# define strchr index
# define strrchr rindex
# endif
# ifndef HAVE_MEMCPY
# define memcpy(a,b,n) bcopy((b), (a), (n))
# define memmove(a,b,n) bcopy((b), (a), (n))
# endif
#endif
#if defined(STDC_HEADERS) || defined(HAVE_MEMCPY)
#define memzero(a,n) memset((a), 0, (n))
#else
#define memzero(a,n) bzero((a), (n))
#endif
typedef struct _List {
struct _List *next;
struct _List *prev;
} List;
#define LIST(x) ((List *)(x))
typedef struct {
char *data;
size_t size;
size_t length;
} Buffer;
typedef struct {
List *head;
List *tail;
int count;
} ListHead;
#define MDVI_EMPTY_LIST_HEAD {NULL, NULL, 0}
typedef struct {
char *data;
size_t size;
size_t length;
} Dstring;
/* Functions to read numbers from streams and memory */
#define fgetbyte(p) ((unsigned)getc(p))
extern char *program_name;
extern Ulong fugetn __PROTO((FILE *, size_t));
extern long fsgetn __PROTO((FILE *, size_t));
extern Ulong mugetn __PROTO((const Uchar *, size_t));
extern long msgetn __PROTO((const Uchar *, size_t));
/* To read from a stream (fu: unsigned, fs: signed) */
#define fuget4(p) fugetn((p), 4)
#define fuget3(p) fugetn((p), 3)
#define fuget2(p) fugetn((p), 2)
#define fuget1(p) fgetbyte(p)
#define fsget4(p) fsgetn((p), 4)
#define fsget3(p) fsgetn((p), 3)
#define fsget2(p) fsgetn((p), 2)
#define fsget1(p) fsgetn((p), 1)
/* To read from memory (mu: unsigned, ms: signed) */
#define MUGETN(p,n) ((p) += (n), mugetn((p)-(n), (n)))
#define MSGETN(p,n) ((p) += (n), msgetn((p)-(n), (n)))
#define muget4(p) MUGETN((p), 4)
#define muget3(p) MUGETN((p), 3)
#define muget2(p) MUGETN((p), 2)
#define muget1(p) MUGETN((p), 1)
#define msget4(p) MSGETN((p), 4)
#define msget3(p) MSGETN((p), 3)
#define msget2(p) MSGETN((p), 2)
#define msget1(p) MSGETN((p), 1)
#define ROUND(x,y) (((x) + (y) - 1) / (y))
#define FROUND(x) (int)((x) + 0.5)
#define SFROUND(x) (int)((x) >= 0 ? floor((x) + 0.5) : ceil((x) + 0.5))
#define Max(a,b) (((a) > (b)) ? (a) : (b))
#define Min(a,b) (((a) < (b)) ? (a) : (b))
/* make 2byte number from 2 8bit quantities */
#define HALFWORD(a,b) ((((a) << 8) & 0xf) | (b))
#define FULLWORD(a,b,c,d) \
((((Int8)(a) << 24) & 0xff000000) | \
(((Uint8)(b) << 16) & 0x00ff0000) | \
(((Uint8)(c) << 8) & 0x0000ff00) | \
((Uint8)(d) & 0xff))
#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
#define SWAPINT(a,b) \
({ int _s = a; a = b; b = _s; })
#else
#define SWAPINT(a,b) do { int _s = a; a = b; b = _s; } while(0)
#endif
#define STREQ(a,b) (strcmp((a), (b)) == 0)
#define STRNEQ(a,b,n) (strncmp((a), (b), (n)) == 0)
#define STRCEQ(a,b) (strcasecmp((a), (b)) == 0)
#define STRNCEQ(a,b,n) (strncasecmp((a), (b), (n)) == 0)
extern char *read_string __PROTO((FILE *, int, char *, size_t));
extern size_t read_bcpl __PROTO((FILE *, char *, size_t, size_t));
extern char *read_alloc_bcpl __PROTO((FILE *, size_t, size_t *));
/* miscellaneous */
extern void mdvi_message __PROTO((const char *, ...));
extern void mdvi_crash __PROTO((const char *, ...));
extern void mdvi_fatal __PROTO((const char *, ...));
extern void mdvi_error __PROTO((const char *, ...));
extern void mdvi_warning __PROTO((const char *, ...));
extern int unit2pix __PROTO((int, const char *));
extern double unit2pix_factor __PROTO((const char *));
#define LOG_NONE -1
#define LOG_INFO 0
#define LOG_WARN 1
#define LOG_ERROR 2
#define LOG_DEBUG 3
#define DBG_OPCODE (1 << 0)
#define DBG_FONTS (1 << 1)
#define DBG_FILES (1 << 2)
#define DBG_DVI (1 << 3)
#define DBG_PARAMS (1 << 4)
#define DBG_SPECIAL (1 << 5)
#define DBG_DEVICE (1 << 6)
#define DBG_GLYPHS (1 << 7)
#define DBG_BITMAPS (1 << 8)
#define DBG_PATHS (1 << 9)
#define DBG_SEARCH (1 << 10)
#define DBG_VARS (1 << 11)
#define DBG_BITMAP_OPS (1 << 12)
#define DBG_BITMAP_DATA (1 << 13)
#define DBG_TYPE1 (1 << 14)
#define DBG_TT (1 << 15)
#define DBG_FT2 (1 << 16)
#define DBG_FMAP (1 << 17)
#define DBG_SILENT (1 << 31)
#ifdef NODEBUG
#define DEBUGGING(x) 0
#else
#define DEBUGGING(x) (_mdvi_debug_mask & DBG_##x)
#endif
#ifndef NODEBUG
extern Uint32 _mdvi_debug_mask;
extern void __debug __PROTO((int, const char *, ...));
#define DEBUG(x) __debug x
#define ASSERT(x) do { \
if(!(x)) mdvi_crash("%s:%d: Assertion %s failed\n", \
__FILE__, __LINE__, #x); \
} while(0)
#define ASSERT_VALUE(x,y) do { \
if((x) != (y)) \
mdvi_crash("%s:%d: Assertion failed (%d = %s != %s)\n", \
__FILE__, __LINE__, (x), #x, #x); \
} while(0)
#else
#define DEBUG(x) do { } while(0)
#define ASSERT(x) do { } while(0)
#define ASSERT_VALUE(x,y) do { } while(0)
#endif
#define set_debug_mask(m) (_mdvi_debug_mask = (Uint32)(m))
#define add_debug_mask(m) (_mdvi_debug_mask |= (Uint32)(m))
#define get_debug_mask() _mdvi_debug_mask
/* memory allocation */
extern void mdvi_free __PROTO((void *));
extern void *mdvi_malloc __PROTO((size_t));
extern void *mdvi_realloc __PROTO((void *, size_t));
extern void *mdvi_calloc __PROTO((size_t, size_t));
extern char *mdvi_strncpy __PROTO((char *, const char *, size_t));
extern char *mdvi_strdup __PROTO((const char *));
extern char *mdvi_strndup __PROTO((const char *, size_t));
extern void *mdvi_memdup __PROTO((const void *, size_t));
extern char *mdvi_build_path_from_cwd __PROTO((const char *));
extern char *mdvi_strrstr __PROTO((const char *, const char *));
/* macros to make memory allocation nicer */
#define xalloc(t) (t *)mdvi_malloc(sizeof(t))
#define xnalloc(t,n) (t *)mdvi_calloc((n), sizeof(t))
#define xresize(p,t,n) (t *)mdvi_realloc((p), (n) * sizeof(t))
extern char *xstradd __PROTO((char *, size_t *, size_t, const char *, size_t));
extern Ulong get_mtime __PROTO((int));
/* lists */
extern void listh_init __PROTO((ListHead *));
extern void listh_prepend __PROTO((ListHead *, List *));
extern void listh_append __PROTO((ListHead *, List *));
extern void listh_add_before __PROTO((ListHead *, List *, List *));
extern void listh_add_after __PROTO((ListHead *, List *, List *));
extern void listh_remove __PROTO((ListHead *, List *));
extern void listh_concat __PROTO((ListHead *, ListHead *));
extern void listh_catcon __PROTO((ListHead *, ListHead *));
extern void buff_init __PROTO((Buffer *));
extern size_t buff_add __PROTO((Buffer *, const char *, size_t));
extern char *buff_gets __PROTO((Buffer *, size_t *));
extern void buff_free __PROTO((Buffer *));
extern char *getword __PROTO((char *, const char *, char **));
extern char *getstring __PROTO((char *, const char *, char **));
extern void dstring_init __PROTO((Dstring *));
extern int dstring_new __PROTO((Dstring *, const char *, int));
extern int dstring_append __PROTO((Dstring *, const char *, int));
extern int dstring_copy __PROTO((Dstring *, int, const char *, int));
extern int dstring_insert __PROTO((Dstring *, int, const char *, int));
extern void dstring_reset __PROTO((Dstring *));
#define dstring_length(d) ((d)->length)
#define dstring_strcat(d,s) dstring_append((d), (s), -1)
extern char *dgets __PROTO((Dstring *, FILE *));
extern int file_readable __PROTO((const char *));
extern int file_exists __PROTO((const char *));
extern const char *file_basename __PROTO((const char *));
extern const char *file_extension __PROTO((const char *));
/*
* Miscellaneous macros
*/
#define LIST_FOREACH(ptr, type, list) \
for(ptr = (type *)(list)->head; ptr; ptr = (ptr)->next)
#define Size(x) (sizeof(x) / sizeof((x)[0]))
/* multiply a fix_word by a 32bit number */
#define B0(x) ((x) & 0xff)
#define B1(x) B0((x) >> 8)
#define B2(x) B0((x) >> 16)
#define B3(x) B0((x) >> 24)
#define __tfm_mul(z,t) \
(((((B0(t) * (z)) >> 8) + (B1(t) * (z))) >> 8) + B2(t) * (z))
#define TFMSCALE(z,t,a,b) \
((B3(t) == 255) ? \
__tfm_mul((z), (t)) / (b) - (a) : \
__tfm_mul((z), (t)) / (b))
#define TFMPREPARE(x,z,a,b) do { \
a = 16; z = (x); \
while(z > 040000000L) { z >>= 1; a <<= 1; } \
b = 256 / a; a *= z; \
} while(0)
#endif /* _MDVI_COMMON_H */
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