107 lines
3.8 KiB
Diff
107 lines
3.8 KiB
Diff
From 346f12459aa67cdb5ff9e267c2c8cccc17f4a376 Mon Sep 17 00:00:00 2001
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From: Chris Liddell <chris.liddell@artifex.com>
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Date: Wed, 15 Mar 2023 15:38:29 +0000
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Subject: [PATCH] Bug 706478: pdfwrite: Substituted TTF CIDFont CID handling
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The PS interpreter callback that handles converting a CID to a TTF GID did
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not handle the case of substituted CIDFonts.
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It requires looking up the CID on the Decoding (to get a Unicode code point),
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and then looking up the code point in the TTF cmap table to get the GID.
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The rendering code already handled it.
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---
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psi/zfcid1.c | 73 +++++++++++++++++++++++++++++++++-------------------
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1 file changed, 46 insertions(+), 27 deletions(-)
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diff --git a/psi/zfcid1.c b/psi/zfcid1.c
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index fd502ff12..55de85d45 100644
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--- a/psi/zfcid1.c
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+++ b/psi/zfcid1.c
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@@ -77,37 +77,56 @@
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int gdbytes = pfont->cidata.common.GDBytes;
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int gnum = 0;
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const byte *data;
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- int i, code;
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+ int i, code = -1;
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ref rcid;
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ref *prgnum;
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+ ref *p, *fdict = pfont_dict(pfont);
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+
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+ if (r_has_type(fdict, t_dictionary) && dict_find_string(fdict, "Path", &p)) {
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+ ref *Decoding = NULL, *TT_cmap = NULL, *SubstNWP = NULL, src_type, dst_type;
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+ uint c;
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+
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+ code = dict_find_string(fdict, "Decoding", &Decoding);
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+ if (code > 0)
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+ code = dict_find_string(fdict, "TT_cmap", &TT_cmap);
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+ if (code > 0)
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+ code = dict_find_string(fdict, "SubstNWP", &SubstNWP);
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+ if (code > 0) {
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+ code = cid_to_TT_charcode(pfont->memory, Decoding, TT_cmap, SubstNWP, cid, &c, &src_type, &dst_type);
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+ if (code >= 0)
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+ gnum = c;
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+ }
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+ }
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- switch (r_type(pcidmap)) {
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- case t_string:
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- if (cid >= r_size(pcidmap) / gdbytes)
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- return_error(gs_error_rangecheck);
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- data = pcidmap->value.const_bytes + cid * gdbytes;
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- break;
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- case t_integer:
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- return cid + pcidmap->value.intval;
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- case t_dictionary:
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- make_int(&rcid, cid);
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- code = dict_find(pcidmap, &rcid, &prgnum);
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- if (code <= 0)
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- return (code < 0 ? code : gs_note_error(gs_error_undefined));
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- if (!r_has_type(prgnum, t_integer))
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- return_error(gs_error_typecheck);
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- return prgnum->value.intval;
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- default: /* array type */
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- code = string_array_access_proc(pfont->memory, pcidmap, 1, cid * gdbytes,
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- gdbytes, NULL, NULL, &data);
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+ if (code < 0) {
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+ switch (r_type(pcidmap)) {
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+ case t_string:
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+ if (cid >= r_size(pcidmap) / gdbytes)
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+ return_error(gs_error_rangecheck);
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+ data = pcidmap->value.const_bytes + cid * gdbytes;
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+ break;
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+ case t_integer:
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+ return cid + pcidmap->value.intval;
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+ case t_dictionary:
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+ make_int(&rcid, cid);
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+ code = dict_find(pcidmap, &rcid, &prgnum);
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+ if (code <= 0)
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+ return (code < 0 ? code : gs_note_error(gs_error_undefined));
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+ if (!r_has_type(prgnum, t_integer))
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+ return_error(gs_error_typecheck);
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+ return prgnum->value.intval;
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+ default: /* array type */
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+ code = string_array_access_proc(pfont->memory, pcidmap, 1, cid * gdbytes,
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+ gdbytes, NULL, NULL, &data);
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- if (code < 0)
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- return code;
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- if ( code > 0 )
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- return_error(gs_error_invalidfont);
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+ if (code < 0)
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+ return code;
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+ if ( code > 0 )
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+ return_error(gs_error_invalidfont);
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+ }
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+ for (i = 0; i < gdbytes; ++i)
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+ gnum = (gnum << 8) + data[i];
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}
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- for (i = 0; i < gdbytes; ++i)
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- gnum = (gnum << 8) + data[i];
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if (gnum >= pfont->data.trueNumGlyphs)
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return_error(gs_error_invalidfont);
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return gnum;
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--
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2.39.2
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