static int Split_eat8(const char *string, QRinput *input, QRencodeMode hint)
{
const char *p, *q;
QRencodeMode mode;
int ret;
int run;
int dif;
int la, ln;
la = QRspec_lengthIndicator(QR_MODE_AN, input->version);
ln = QRspec_lengthIndicator(QR_MODE_NUM, input->version);
p = string + 1;
while(*p != '\0') {
mode = Split_identifyMode(p, hint);
if(mode == QR_MODE_KANJI) {
break;
}
if(mode == QR_MODE_NUM) {
q = p;
while(isdigit(*q)) {
q++;
}
dif = QRinput_estimateBitsMode8((int)(p - string)) /* + 4 + l8 */
+ QRinput_estimateBitsModeNum((int)q - (int)p) + 4 + ln
- QRinput_estimateBitsMode8((int)q - (int)string) /* - 4 - l8 */;
if(dif < 0) {
break;
} else {
p = q;
}
} else if(mode == QR_MODE_AN) {
q = p;
while(isalnum(*q)) {
q++;
}
dif = QRinput_estimateBitsMode8((int)p - (int)string) /* + 4 + l8 */
+ QRinput_estimateBitsModeAn((int)q - (int)p) + 4 + la
- QRinput_estimateBitsMode8((int)q - (int)string) /* - 4 - l8 */;
if(dif < 0) {
break;
} else {
p = q;
}
} else {
p++;
}
}
run = (int)p - (int)string;
ret = QRinput_append(input, QR_MODE_8, run, (unsigned char *)string);
if(ret < 0) return -1;
return run;
}
static int Split_eatAn(const char *string, QRinput *input, QRencodeMode hint)
{
const char *p, *q;
int ret;
int run;
int dif;
int la, ln;
la = QRspec_lengthIndicator(QR_MODE_AN, input->version);
ln = QRspec_lengthIndicator(QR_MODE_NUM, input->version);
p = string;
while(isalnum(*p)) {
if(isdigit(*p)) {
q = p;
while(isdigit(*q)) {
q++;
}
dif = QRinput_estimateBitsModeAn(p - string) /* + 4 + la */
+ QRinput_estimateBitsModeNum(q - p) + 4 + ln
+ (isalnum(*q)?(4 + ln):0)
- QRinput_estimateBitsModeAn(q - string) /* - 4 - la */;
if(dif < 0) {
break;
} else {
p = q;
}
} else {
p++;
}
}
run = p - string;
if(*p && !isalnum(*p)) {
dif = QRinput_estimateBitsModeAn(run) + 4 + la
+ QRinput_estimateBitsMode8(1) /* + 4 + l8 */
- QRinput_estimateBitsMode8(run + 1) /* - 4 - l8 */;
if(dif > 0) {
return Split_eat8(string, input, hint);
}
}
ret = QRinput_append(input, QR_MODE_AN, run, (unsigned char *)string);
if(ret < 0) return -1;
return run;
}
static int Split_eatNum(const char *string, QRinput *input,QRencodeMode hint)
{
const char *p;
int ret;
int run;
int dif;
int ln;
QRencodeMode mode;
ln = QRspec_lengthIndicator(QR_MODE_NUM, input->version);
p = string;
while(isdigit(*p)) {
p++;
}
run = (int)p - (int)string;
mode = Split_identifyMode(p, hint);
if(mode == QR_MODE_8) {
dif = QRinput_estimateBitsModeNum(run) + 4 + ln
+ QRinput_estimateBitsMode8(1) /* + 4 + l8 */
- QRinput_estimateBitsMode8(run + 1) /* - 4 - l8 */;
if(dif > 0) {
return Split_eat8(string, input, hint);
}
}
if(mode == QR_MODE_AN) {
dif = QRinput_estimateBitsModeNum(run) + 4 + ln
+ QRinput_estimateBitsModeAn(1) /* + 4 + la */
- QRinput_estimateBitsModeAn(run + 1) /* - 4 - la */;
if(dif > 0) {
return Split_eatAn(string, input, hint);
}
}
ret = QRinput_append(input, QR_MODE_NUM, run, (unsigned char *)string);
if(ret < 0) return -1;
return run;
}