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-rw-r--r--source/pdf/pdf-unicode.c33
1 files changed, 18 insertions, 15 deletions
diff --git a/source/pdf/pdf-unicode.c b/source/pdf/pdf-unicode.c
index a6891655..3a7fe1c4 100644
--- a/source/pdf/pdf-unicode.c
+++ b/source/pdf/pdf-unicode.c
@@ -6,36 +6,39 @@ void
pdf_load_to_unicode(pdf_document *doc, pdf_font_desc *font,
char **strings, char *collection, pdf_obj *cmapstm)
{
- pdf_cmap *cmap;
unsigned int cpt;
- int cid;
+ int gid;
int ucsbuf[8];
int ucslen;
+ int i;
fz_context *ctx = doc->ctx;
if (pdf_is_stream(doc, pdf_to_num(cmapstm), pdf_to_gen(cmapstm)))
{
- cmap = pdf_load_embedded_cmap(doc, cmapstm);
+ pdf_cmap *gid_from_cpt = font->encoding;
+ pdf_cmap *ucs_from_cpt = pdf_load_embedded_cmap(doc, cmapstm);
font->to_unicode = pdf_new_cmap(ctx);
- /* TODO: use codespace ranges */
- for (cpt = 0; cpt < (strings ? 256 : 65536); cpt++)
+ for (i = 0; i < gid_from_cpt->codespace_len; ++i)
{
- cid = pdf_lookup_cmap(font->encoding, cpt);
- if (cid >= 0)
+ for (cpt = gid_from_cpt->codespace[i].low; cpt <= gid_from_cpt->codespace[i].high; ++cpt)
{
- ucslen = pdf_lookup_cmap_full(cmap, cpt, ucsbuf);
- if (ucslen == 1)
- pdf_map_range_to_range(ctx, font->to_unicode, cid, cid, ucsbuf[0]);
- if (ucslen > 1)
- pdf_map_one_to_many(ctx, font->to_unicode, cid, ucsbuf, ucslen);
+ gid = pdf_lookup_cmap(gid_from_cpt, cpt);
+ if (gid >= 0)
+ {
+ ucslen = pdf_lookup_cmap_full(ucs_from_cpt, cpt, ucsbuf);
+ if (ucslen == 1)
+ pdf_map_range_to_range(ctx, font->to_unicode, gid, gid, ucsbuf[0]);
+ if (ucslen > 1)
+ pdf_map_one_to_many(ctx, font->to_unicode, gid, ucsbuf, ucslen);
+ }
}
}
pdf_sort_cmap(ctx, font->to_unicode);
- pdf_drop_cmap(ctx, cmap);
+ pdf_drop_cmap(ctx, ucs_from_cpt);
font->size += pdf_cmap_size(ctx, font->to_unicode);
}
@@ -58,8 +61,8 @@ pdf_load_to_unicode(pdf_document *doc, pdf_font_desc *font,
/* TODO one-to-many mappings */
font->cid_to_ucs_len = 256;
- font->cid_to_ucs = fz_malloc_array(ctx, 256, sizeof(unsigned short));
- font->size += 256 * sizeof(unsigned short);
+ font->cid_to_ucs = fz_malloc_array(ctx, 256, sizeof *font->cid_to_ucs);
+ font->size += 256 * sizeof *font->cid_to_ucs;
for (cpt = 0; cpt < 256; cpt++)
{