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Add unlatch if C40/Text buffer is empty

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also don't read binary marker beyond end of input

Relates to #38 and #41
This commit is contained in:
Robin Stuart 2016-11-22 22:03:28 +00:00
parent a0493a0d0c
commit 886e789090
1 changed files with 7 additions and 4 deletions
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11
backend/dmatrix.c
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@ -944,7 +944,7 @@ static int dm200encode(struct zint_symbol *symbol, const unsigned char source[],
/* start of binary data */
int binary_count; /* length of b256 data */
for (binary_count = 0; binary[binary_count + i] == 'b'; binary_count++);
for (binary_count = 0; binary_count + i < tp && binary[binary_count + i] == 'b'; binary_count++);
if (binary_count <= 249) {
dminsert(binary, i, 'b');
@ -995,9 +995,7 @@ static int dm200encode_remainder(unsigned char target[], int target_length, cons
}
target[target_length] = source[inputlen - 1] + 1;
target_length++;
}
if (process_p == 2) // 2 data characters left to encode.
} else if (process_p == 2) // 2 data characters left to encode.
{
// Pad with shift 1 value (0) and encode as double.
int intValue = (1600 * process_buffer[0]) + (40 * process_buffer[1]) + 1; // ie (0 + 1).
@ -1009,6 +1007,11 @@ static int dm200encode_remainder(unsigned char target[], int target_length, cons
target[target_length] = 254; // Unlatch
target_length++;
}
} else {
if (symbols_left > 0) {
target[target_length] = 254; // Unlatch
target_length++;
}
}
break;