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/* ------------------------------------------------------------------------- */
/* ean13.include-3
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 SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
/* ------------------------------------------------------------------------- */
/* */
/* define includes */
/* */
/* ------------------------------------------------------------------------- */
void printUsage ()
{
printf(" \n");
printf("EAN13 %s \n",version);
printf("This program will generate an EAN13 barcode in xbm file format.\n");
printf(" \n");
printf("- usage: ean13 12-digits [> outfile] \n");
printf(" the check-bit will be automatically calculated\n");
printf(" \n");
printf(" \n");
}
void drawEAN (int x, int y1, int y2, char n, int rightHalf, int position)
{
unsigned int bitsA = eanBitsA[n - '0'];
unsigned int bitsB = eanBitsB[n - '0'];
unsigned int bits;
int i = 6;
unsigned int row_code = 0;
/* country_code * position = bar set to use */
if (!rightHalf )
{
row_code = country_code -'0';
row_code = (row_code *6) + position;
if ( what_bit_table[row_code] == 'a' )
bits = eanBitsA[n - '0'];
if ( what_bit_table[row_code] == 'b' )
bits = eanBitsB[n - '0'];
}
if (rightHalf)
{
bits = eanBitsA[n - '0'];
bits = ~bits;
}
while (i >= 0)
{
if (bits & (1 << i))
vertical_line (x, y1, y2);
x++;
i--;
}
}
void drawchar (int x, int y, char c)
{
char *cfound = strchr (clist, c);
char **tab;
int xx;
char *t;
if (! cfound)
return;
tab = ctables[cfound - clist];
while (*tab != NULL)
{
t = *tab;
xx = x;
while (*t)
{
if (*t != ' ')
plot (xx, y);
t++;
xx++;
}
y++;
tab++;
}
}
void printEAN (stringx)
{
int x, y;
char *staringx;
printf ("#define upc_width %d\n"
"#define upc_height %d\n"
"/* ean13 barcode...by: LCS, Issaquah, WA, 98027,USA */\n"
"/* input string = %s */\n"
"static char upc_bits[] = {\n",
WIDTH, HEIGHT, stringx);
for (y = 0; y < HEIGHT; y++)
{
printf (" ");
for (x = 0; x < WIDTH_BYTES; x++)
{
printf ("0x%02x, ", buf[y][x]);
}
printf ("\n");
}
printf ("};\n");
}
void processEAN (char *str)
{
char s2[13] = "000000000000-";
int x;
unsigned int mul = 3;
unsigned int sum = 0;
unsigned int xeven = 0;
unsigned int xodd = 0;
/*
Lets copy the character string into a working area, and
calculate the check sum at the same time.
The first character IS NOT used, just displayed
*/
country_code = *str;
x = 0;
while (x < 13 && *str) /* calculate the check digit*/
{ /* if only 11 digits */
if (*str >= '0' && *str <= '9') /* move to working location */
{
s2[x++] = *str;
}
str++;
}
/* compute checksum via hp.com example */
x = 0;
xeven += (s2[x] - '0');
x++;
xodd += (s2[x] - '0');
x++;
xeven += (s2[x] - '0');
x++;
xodd += (s2[x] - '0');
x++;
xeven += (s2[x] - '0');
x++;
xodd += (s2[x] - '0');
x++;
xeven += (s2[x] - '0');
x++;
xodd += (s2[x] - '0');
x++;
xeven += (s2[x] - '0');
x++;
xodd += (s2[x] - '0');
x++;
xeven += (s2[x] - '0');
x++;
xodd += (s2[x] - '0');
xodd = xodd * 3;
sum = xeven + xodd;
if (s2[12] == '-') /* if - then ignore and cal checksum */
s2[12] = ((10 - (sum % 10)) % 10) + '0';
s2[13] = 0;
/* header start mark */
vertical_line (6, 0, HEIGHT - 4);
vertical_line (8, 0, HEIGHT - 4);
for (x = 0; x < 6; x++)
{ /* height of bars in company number field */
drawEAN (9 + x*7, 0, HEIGHT - 11, s2[x+1], 0, x);
}
/* center mark */
vertical_line (52, 0, HEIGHT - 4);
vertical_line (54, 0, HEIGHT - 4);
for (x = 0; x < 6; x++)
{ /* height of bars in part number field */
drawEAN (56 + x*7, 0, HEIGHT - 11, s2[x+7], 1, x);
}
/* trailer start mark*/
vertical_line (98, 0, HEIGHT - 4);
vertical_line (100, 0, HEIGHT - 4);
/* first readable number */
drawchar (0, HEIGHT -14, country_code);
for (x = 0; x < 6; x++)
{ /* position of numbers in company field */
drawchar (11 + x*7, HEIGHT - 7, s2[x+1]);
}
for (x = 0; x < 6; x++)
{ /* position of numbers in part number field */
drawchar (57 + x*7, HEIGHT - 7, s2[x+7]);
}
}
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