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Force unlatch from EDIFACT on illegal character

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Bug report and patch by brunt, ticket #44
This commit is contained in:
Robin Stuart 2016-11-26 09:00:41 +00:00
parent 1155683be1
commit dc36261030
1 changed files with 16 additions and 6 deletions
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16
backend/dmatrix.c
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@ -867,7 +867,7 @@ static int dm200encode(struct zint_symbol *symbol, const unsigned char source[],
/* step (f) EDIFACT encodation */
if (current_mode == DM_EDIFACT) {
int value = 0;
int value = -1;
next_mode = DM_EDIFACT;
if (*process_p == 3) {
@ -885,11 +885,21 @@ static int dm200encode(struct zint_symbol *symbol, const unsigned char source[],
if ((source[sp] >= ' ') && (source[sp] <= '?')) {
value = source[sp];
}
/* possibility put an assertion here for invalid character (none of the ifs trigger) */
if (value != -1) {
process_buffer[*process_p] = value;
(*process_p)++;
sp++;
} else {
// Invalid character, latch to ASCII
process_buffer[*process_p] = 31;
(*process_p)++;
while (*process_p < 4) {
process_buffer[*process_p] = 0;
(*process_p)++;
}
next_mode = DM_ASCII;
}
}
if (*process_p >= 4) {