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#include "format-exp.h"
#include "emb-file.h"
#include "emb-logging.h"
#include "emb-stitch.h"
#include "helpers-binary.h"
#include "helpers-misc.h"
#include <stdio.h>
static char expDecode(unsigned char a1)
{
return (a1 > 0x80) ? ((-~a1) - 1) : a1;
}
static void expEncode(unsigned char* b, char dx, char dy, int flags)
{
if(!b)
{
embLog_error("format-exp.c expEncode(), b argument is null\n");
return;
}
/* TODO: How to encode JUMP stitches? JUMP must be handled. Also check this for the KSM format since it appears to be similar */
if(flags == STOP)
{
b[0] = 0x80;
b[1] = 1;
b[2] = dx;
b[3] = dy;
}
else if (flags == END)
{
b[0] = 0x80;
b[1] = 0x10;
b[2] = 0;
b[3] = 0;
}
else if(flags == TRIM || flags == JUMP)
{
b[0] = 0x80;
b[1] = 2;
b[2] = dx;
b[3] = dy;
}
else
{
b[0] = dx;
b[1] = dy;
}
}
/*! Reads a file with the given \a fileName and loads the data into \a pattern.
* Returns \c true if successful, otherwise returns \c false. */
int readExp(EmbPattern* pattern, const char* fileName)
{
EmbFile* file = 0;
int i = 0;
unsigned char b0 = 0, b1 = 0;
char dx = 0, dy = 0;
int flags = 0;
if(!pattern) { embLog_error("format-exp.c readExp(), pattern argument is null\n"); return 0; }
if(!fileName) { embLog_error("format-exp.c readExp(), fileName argument is null\n"); return 0; }
file = embFile_open(fileName, "rb");
if(!file)
{
embLog_error("format-exp.c readExp(), cannot open %s for reading\n", fileName);
return 0;
}
embPattern_loadExternalColorFile(pattern, fileName);
for(i = 0; !embFile_eof(file); i++)
{
flags = NORMAL;
b0 = (unsigned char)embFile_getc(file);
if(embFile_eof(file))
break;
b1 = (unsigned char)embFile_getc(file);
if(embFile_eof(file))
break;
if(b0 == 0x80)
{
if(b1 & 1)
{
b0 = (unsigned char)embFile_getc(file);
if(embFile_eof(file))
break;
b1 = (unsigned char)embFile_getc(file);
if(embFile_eof(file))
break;
flags = STOP;
}
else if((b1 == 2) || (b1 == 4) || b1 == 6)
{
flags = TRIM;
if(b1 == 2) flags = NORMAL;
b0 = (unsigned char)embFile_getc(file);
if(embFile_eof(file))
break;
b1 = (unsigned char)embFile_getc(file);
if(embFile_eof(file))
break;
}
else if(b1 == 0x80)
{
b0 = (unsigned char)embFile_getc(file);
if(embFile_eof(file))
break;
b1 = (unsigned char)embFile_getc(file);
if(embFile_eof(file))
break;
/* Seems to be b0=0x07 and b1=0x00
* Maybe used as extension functions */
b0 = 0;
b1 = 0;
flags = TRIM;
}
}
dx = expDecode(b0);
dy = expDecode(b1);
embPattern_addStitchRel(pattern, dx / 10.0, dy / 10.0, flags, 1);
}
embFile_close(file);
/* Check for an END stitch and add one if it is not present */
if(pattern->lastStitch->stitch.flags != END)
embPattern_addStitchRel(pattern, 0, 0, END, 1);
return 1;
}
/*! Writes the data from \a pattern to a file with the given \a fileName.
* Returns \c true if successful, otherwise returns \c false. */
int writeExp(EmbPattern* pattern, const char* fileName)
{
#ifdef ARDUINO /* ARDUINO TODO: This is temporary. Remove when complete. */
return 0; /* ARDUINO TODO: This is temporary. Remove when complete. */
#else /* ARDUINO TODO: This is temporary. Remove when complete. */
EmbFile* file = 0;
EmbStitchList* stitches = 0;
double dx = 0.0, dy = 0.0;
double xx = 0.0, yy = 0.0;
int flags = 0;
unsigned char b[4];
if(!pattern) { embLog_error("format-exp.c writeExp(), pattern argument is null\n"); return 0; }
if(!fileName) { embLog_error("format-exp.c writeExp(), fileName argument is null\n"); return 0; }
if(!embStitchList_count(pattern->stitchList))
{
embLog_error("format-exp.c writeExp(), pattern contains no stitches\n");
return 0;
}
/* Check for an END stitch and add one if it is not present */
if(pattern->lastStitch->stitch.flags != END)
embPattern_addStitchRel(pattern, 0, 0, END, 1);
file = embFile_open(fileName, "wb");
if(!file)
{
embLog_error("format-exp.c writeExp(), cannot open %s for writing\n", fileName);
return 0;
}
/* write stitches */
stitches = pattern->stitchList;
while(stitches)
{
dx = stitches->stitch.xx * 10.0 - xx;
dy = stitches->stitch.yy * 10.0 - yy;
xx = stitches->stitch.xx * 10.0;
yy = stitches->stitch.yy * 10.0;
flags = stitches->stitch.flags;
expEncode(b, (char)roundDouble(dx), (char)roundDouble(dy), flags);
if((b[0] == 0x80) && ((b[1] == 1) || (b[1] == 2) || (b[1] == 4) || (b[1] == 0x10)))
{
embFile_printf(file, "%c%c%c%c", b[0], b[1], b[2], b[3]);
}
else
{
embFile_printf(file, "%c%c", b[0], b[1]);
}
stitches = stitches->next;
}
embFile_printf(file, "\x1a");
embFile_close(file);
return 1;
#endif /* ARDUINO TODO: This is temporary. Remove when complete. */
}
/* kate: bom off; indent-mode cstyle; indent-width 4; replace-trailing-space-save on; */
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