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Fix HN text parsing.

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Signed-off-by: yzrh <yzrh@noema.org>
This commit is contained in:
yzrh 2023-01-14 23:52:28 +00:00
parent dd5854678c
commit 2fa2b760ae
1 changed files with 49 additions and 47 deletions
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96
src/cnki_pdf.c
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@ -850,73 +850,75 @@ cnki_pdf_hn(cnki_t **param)
for (int i = 0, j = 0; i < ptr->text_size - 1;) { for (int i = 0, j = 0; i < ptr->text_size - 1;) {
switch (((unsigned char) ptr->text[i + 1] << 8) + (unsigned char) ptr->text[i]) { switch (((unsigned char) ptr->text[i + 1] << 8) + (unsigned char) ptr->text[i]) {
case 0x8001: case 0x8001:
if (ptr->address_next > ptr->address) if (ptr->address_next <= ptr->address) {
strcat(dictionary, "T*\n"); if (i + 7 >= ptr->text_size) {
case 0x8070: i += 2;
if (ptr->address_next > ptr->address) { break;
i += 4; }
for (;;) { conv_src[0] = ptr->text[i + 7];
if (i + 3 >= ptr->text_size || conv_src[1] = ptr->text[i + 6];
(unsigned char) ptr->text[i + 1] == 0x80)
break;
conv_src[0] = ptr->text[i + 3]; //snprintf(buf, 64, "1 0 0 1 %d %d Tm\n")
conv_src[1] = ptr->text[i + 2]; //strcat(dictionary, buf);
//snprintf(buf, 64, "%f %f Td\n"); conv_size = 6;
//strcat(dictionary, buf);
conv_size = 6; if (strconv(&conv_dst, "UTF-16BE",
conv_src, "GB18030", &conv_size) == 0) {
if (strconv(&conv_dst, "UTF-16BE", if (conv_size - 2 > 0) {
conv_src, "GB18030", &conv_size) == 0) { strcat(dictionary, "<");
if (conv_size - 2 > 0) { for (int k = 0; k < conv_size - 2; k++) {
strcat(dictionary, "<feff"); snprintf(conv_hex, 3,
for (int k = 0; k < conv_size - 2; k++) { "%02x", (unsigned char) conv_dst[k]);
snprintf(conv_hex, 3, strcat(dictionary, conv_hex);
"%02x", (unsigned char) conv_dst[k]);
strcat(dictionary, conv_hex);
}
strcat(dictionary, "> Tj\n");
} }
free(conv_dst); strcat(dictionary, "> Tj\n");
} }
free(conv_dst);
i += 4;
} }
i += 8;
break; break;
} }
if (i + 7 >= ptr->text_size) { strcat(dictionary, "T*\n");
i += 2; case 0x8070:
i += 4;
if (ptr->address_next <= ptr->address)
break; break;
}
conv_src[0] = ptr->text[i + 7]; for (;;) {
conv_src[1] = ptr->text[i + 6]; if (i + 3 >= ptr->text_size ||
(unsigned char) ptr->text[i + 1] == 0x80)
break;
//snprintf(buf, 64, "%f %f Td\n"); conv_src[0] = ptr->text[i + 3];
//strcat(dictionary, buf); conv_src[1] = ptr->text[i + 2];
conv_size = 6; //snprintf(buf, 64, "1 0 0 1 %d %d Tm\n")
//strcat(dictionary, buf);
if (strconv(&conv_dst, "UTF-16BE", conv_size = 6;
conv_src, "GB18030", &conv_size) == 0) {
if (conv_size - 2 > 0) { if (strconv(&conv_dst, "UTF-16BE",
strcat(dictionary, "<feff"); conv_src, "GB18030", &conv_size) == 0) {
for (int k = 0; k < conv_size - 2; k++) { if (conv_size - 2 > 0) {
snprintf(conv_hex, 3, strcat(dictionary, "<");
"%02x", (unsigned char) conv_dst[k]); for (int k = 0; k < conv_size - 2; k++) {
strcat(dictionary, conv_hex); snprintf(conv_hex, 3,
"%02x", (unsigned char) conv_dst[k]);
strcat(dictionary, conv_hex);
}
strcat(dictionary, "> Tj\n");
} }
strcat(dictionary, "> Tj\n"); free(conv_dst);
} }
free(conv_dst);
i += 4;
} }
i += 8;
break; break;
case 0x800a: case 0x800a:
if (i + 27 >= ptr->text_size || j >= ptr->image_length) { if (i + 27 >= ptr->text_size || j >= ptr->image_length) {