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Diffstat (limited to 'pdf/pdf_type3.c')
-rw-r--r--pdf/pdf_type3.c200
1 files changed, 97 insertions, 103 deletions
diff --git a/pdf/pdf_type3.c b/pdf/pdf_type3.c
index d2523ae6..c129350a 100644
--- a/pdf/pdf_type3.c
+++ b/pdf/pdf_type3.c
@@ -1,16 +1,15 @@
#include "fitz.h"
#include "mupdf.h"
-static fz_error
+static void
pdf_run_glyph_func(void *xref, fz_obj *rdb, fz_buffer *contents, fz_device *dev, fz_matrix ctm)
{
- return pdf_run_glyph(xref, rdb, contents, dev, ctm);
+ pdf_run_glyph(xref, rdb, contents, dev, ctm);
}
-fz_error
-pdf_load_type3_font(pdf_font_desc **fontdescp, pdf_xref *xref, fz_obj *rdb, fz_obj *dict)
+pdf_font_desc *
+pdf_load_type3_font(pdf_xref *xref, fz_obj *rdb, fz_obj *dict)
{
- fz_error error;
char buf[256];
char *estrings[256];
pdf_font_desc *fontdesc;
@@ -24,136 +23,131 @@ pdf_load_type3_font(pdf_font_desc **fontdescp, pdf_xref *xref, fz_obj *rdb, fz_o
fz_matrix matrix;
fz_context *ctx = xref->ctx;
- obj = fz_dict_gets(dict, "Name");
- if (fz_is_name(obj))
- fz_strlcpy(buf, fz_to_name(obj), sizeof buf);
- else
- sprintf(buf, "Unnamed-T3");
+ fz_try(ctx)
+ {
+ obj = fz_dict_gets(dict, "Name");
+ if (fz_is_name(obj))
+ fz_strlcpy(buf, fz_to_name(obj), sizeof buf);
+ else
+ sprintf(buf, "Unnamed-T3");
- fontdesc = pdf_new_font_desc(ctx);
+ fontdesc = pdf_new_font_desc(ctx);
- obj = fz_dict_gets(dict, "FontMatrix");
- matrix = pdf_to_matrix(ctx, obj);
+ obj = fz_dict_gets(dict, "FontMatrix");
+ matrix = pdf_to_matrix(ctx, obj);
- obj = fz_dict_gets(dict, "FontBBox");
- bbox = pdf_to_rect(ctx, obj);
+ obj = fz_dict_gets(dict, "FontBBox");
+ bbox = pdf_to_rect(ctx, obj);
- fontdesc->font = fz_new_type3_font(ctx, buf, matrix);
+ fontdesc->font = fz_new_type3_font(ctx, buf, matrix);
- fz_set_font_bbox(fontdesc->font, bbox.x0, bbox.y0, bbox.x1, bbox.y1);
+ fz_set_font_bbox(fontdesc->font, bbox.x0, bbox.y0, bbox.x1, bbox.y1);
- /* Encoding */
+ /* Encoding */
- for (i = 0; i < 256; i++)
- estrings[i] = NULL;
+ for (i = 0; i < 256; i++)
+ estrings[i] = NULL;
- encoding = fz_dict_gets(dict, "Encoding");
- if (!encoding)
- {
- error = fz_error_make("syntaxerror: Type3 font missing Encoding");
- goto cleanup;
- }
+ encoding = fz_dict_gets(dict, "Encoding");
+ if (!encoding)
+ {
+ fz_throw(ctx, "syntaxerror: Type3 font missing Encoding");
+ }
- if (fz_is_name(encoding))
- pdf_load_encoding(estrings, fz_to_name(encoding));
+ if (fz_is_name(encoding))
+ pdf_load_encoding(estrings, fz_to_name(encoding));
- if (fz_is_dict(encoding))
- {
- fz_obj *base, *diff, *item;
+ if (fz_is_dict(encoding))
+ {
+ fz_obj *base, *diff, *item;
- base = fz_dict_gets(encoding, "BaseEncoding");
- if (fz_is_name(base))
- pdf_load_encoding(estrings, fz_to_name(base));
+ base = fz_dict_gets(encoding, "BaseEncoding");
+ if (fz_is_name(base))
+ pdf_load_encoding(estrings, fz_to_name(base));
- diff = fz_dict_gets(encoding, "Differences");
- if (fz_is_array(diff))
- {
- n = fz_array_len(diff);
- k = 0;
- for (i = 0; i < n; i++)
+ diff = fz_dict_gets(encoding, "Differences");
+ if (fz_is_array(diff))
{
- item = fz_array_get(diff, i);
- if (fz_is_int(item))
- k = fz_to_int(item);
- if (fz_is_name(item))
- estrings[k++] = fz_to_name(item);
- if (k < 0) k = 0;
- if (k > 255) k = 255;
+ n = fz_array_len(diff);
+ k = 0;
+ for (i = 0; i < n; i++)
+ {
+ item = fz_array_get(diff, i);
+ if (fz_is_int(item))
+ k = fz_to_int(item);
+ if (fz_is_name(item))
+ estrings[k++] = fz_to_name(item);
+ if (k < 0) k = 0;
+ if (k > 255) k = 255;
+ }
}
}
- }
- fontdesc->encoding = pdf_new_identity_cmap(ctx, 0, 1);
+ fontdesc->encoding = pdf_new_identity_cmap(ctx, 0, 1);
- error = pdf_load_to_unicode(fontdesc, xref, estrings, NULL, fz_dict_gets(dict, "ToUnicode"));
- if (error)
- goto cleanup;
+ pdf_load_to_unicode(fontdesc, xref, estrings, NULL, fz_dict_gets(dict, "ToUnicode"));
- /* Widths */
+ /* Widths */
- pdf_set_default_hmtx(fontdesc, 0);
+ pdf_set_default_hmtx(fontdesc, 0);
- first = fz_to_int(fz_dict_gets(dict, "FirstChar"));
- last = fz_to_int(fz_dict_gets(dict, "LastChar"));
+ first = fz_to_int(fz_dict_gets(dict, "FirstChar"));
+ last = fz_to_int(fz_dict_gets(dict, "LastChar"));
- widths = fz_dict_gets(dict, "Widths");
- if (!widths)
- {
- error = fz_error_make("syntaxerror: Type3 font missing Widths");
- goto cleanup;
- }
+ widths = fz_dict_gets(dict, "Widths");
+ if (!widths)
+ {
+ fz_throw(ctx, "syntaxerror: Type3 font missing Widths");
+ }
- for (i = first; i <= last; i++)
- {
- float w = fz_to_real(fz_array_get(widths, i - first));
- w = fontdesc->font->t3matrix.a * w * 1000;
- fontdesc->font->t3widths[i] = w * 0.001f;
- pdf_add_hmtx(ctx, fontdesc, i, i, w);
- }
+ for (i = first; i <= last; i++)
+ {
+ float w = fz_to_real(fz_array_get(widths, i - first));
+ w = fontdesc->font->t3matrix.a * w * 1000;
+ fontdesc->font->t3widths[i] = w * 0.001f;
+ pdf_add_hmtx(ctx, fontdesc, i, i, w);
+ }
- pdf_end_hmtx(fontdesc);
+ pdf_end_hmtx(fontdesc);
- /* Resources -- inherit page resources if the font doesn't have its own */
+ /* Resources -- inherit page resources if the font doesn't have its own */
- fontdesc->font->t3resources = fz_dict_gets(dict, "Resources");
- if (!fontdesc->font->t3resources)
- fontdesc->font->t3resources = rdb;
- if (fontdesc->font->t3resources)
- fz_keep_obj(fontdesc->font->t3resources);
- if (!fontdesc->font->t3resources)
- fz_warn(ctx, "no resource dictionary for type 3 font!");
+ fontdesc->font->t3resources = fz_dict_gets(dict, "Resources");
+ if (!fontdesc->font->t3resources)
+ fontdesc->font->t3resources = rdb;
+ if (fontdesc->font->t3resources)
+ fz_keep_obj(fontdesc->font->t3resources);
+ if (!fontdesc->font->t3resources)
+ fz_warn(ctx, "no resource dictionary for type 3 font!");
- fontdesc->font->t3xref = xref;
- fontdesc->font->t3run = pdf_run_glyph_func;
+ fontdesc->font->t3xref = xref;
+ fontdesc->font->t3run = pdf_run_glyph_func;
- /* CharProcs */
+ /* CharProcs */
- charprocs = fz_dict_gets(dict, "CharProcs");
- if (!charprocs)
- {
- error = fz_error_make("syntaxerror: Type3 font missing CharProcs");
- goto cleanup;
- }
+ charprocs = fz_dict_gets(dict, "CharProcs");
+ if (!charprocs)
+ {
+ fz_throw(ctx, "syntaxerror: Type3 font missing CharProcs");
+ }
- for (i = 0; i < 256; i++)
- {
- if (estrings[i])
+ for (i = 0; i < 256; i++)
{
- obj = fz_dict_gets(charprocs, estrings[i]);
- if (pdf_is_stream(xref, fz_to_num(obj), fz_to_gen(obj)))
+ if (estrings[i])
{
- error = pdf_load_stream(&fontdesc->font->t3procs[i], xref, fz_to_num(obj), fz_to_gen(obj));
- if (error)
- goto cleanup;
+ obj = fz_dict_gets(charprocs, estrings[i]);
+ if (pdf_is_stream(xref, fz_to_num(obj), fz_to_gen(obj)))
+ {
+ fontdesc->font->t3procs[i] = pdf_load_stream(xref, fz_to_num(obj), fz_to_gen(obj));
+ }
}
}
}
-
- *fontdescp = fontdesc;
- return fz_okay;
-
-cleanup:
- fz_drop_font(ctx, fontdesc->font);
- fz_free(ctx, fontdesc);
- return fz_error_note(error, "cannot load type3 font (%d %d R)", fz_to_num(dict), fz_to_gen(dict));
+ fz_catch(ctx)
+ {
+ fz_drop_font(ctx, fontdesc->font);
+ fz_free(ctx, fontdesc);
+ fz_throw(ctx, "cannot load type3 font (%d %d R)", fz_to_num(dict), fz_to_gen(dict));
+ }
+ return fontdesc;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-06 03:35:54 +0000