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Segmentation fault for little or no data

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This commit is contained in:
hooper114 2008-10-09 11:29:09 +00:00
parent fd45a1d277
commit 437cfb823d
3 changed files with 52 additions and 13 deletions
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12
backend/code16k.c
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@ -275,6 +275,10 @@ int code16k(struct zint_symbol *symbol, unsigned char source[])
rows_needed = (i/5);
if(i%5 > 0) { rows_needed++; }
if(rows_needed == 1) {
rows_needed = 2;
}
/* start with the mode character - Table 2 */
m = 0;
switch(set[0]) {
@ -393,16 +397,19 @@ int code16k(struct zint_symbol *symbol, unsigned char source[])
}
} while (read < ustrlen(source));
pads_needed = 5 - ((bar_characters + 2) % 5);
if(pads_needed == 5) {
pads_needed = 0;
}
if((bar_characters + pads_needed) < 8) {
pads_needed += 8 - (bar_characters + pads_needed);
}
for(i = 0; i < pads_needed; i++) {
values[bar_characters] = 106;
bar_characters++;
}
/* Calculate check digits */
first_sum = 0;
second_sum = 0;
for(i = 0; i < bar_characters; i++)
@ -424,6 +431,7 @@ int code16k(struct zint_symbol *symbol, unsigned char source[])
concat(width_pattern, "1");
for(i = 0; i < 5; i++) {
concat(width_pattern, C16KTable[values[(current_row * 5) + i]]);
}
concat(width_pattern, C16KStartStop[C16KStopValues[current_row]]);