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-rw-r--r--source/pdf/pdf-interpret.c119
1 files changed, 62 insertions, 57 deletions
diff --git a/source/pdf/pdf-interpret.c b/source/pdf/pdf-interpret.c
index 0961b742..40aa51ad 100644
--- a/source/pdf/pdf-interpret.c
+++ b/source/pdf/pdf-interpret.c
@@ -104,8 +104,7 @@ static int
pdf_is_hidden_ocg(fz_context *ctx, pdf_ocg_descriptor *desc, pdf_obj *rdb, const char *event, pdf_obj *ocg)
{
char event_state[16];
- pdf_obj *obj, *obj2;
- char *type;
+ pdf_obj *obj, *obj2, *type;
/* Avoid infinite recursions */
if (pdf_obj_marked(ctx, ocg))
@@ -122,7 +121,7 @@ pdf_is_hidden_ocg(fz_context *ctx, pdf_ocg_descriptor *desc, pdf_obj *rdb, const
/* If we've been handed a name, look it up in the properties. */
if (pdf_is_name(ctx, ocg))
{
- ocg = pdf_dict_gets(ctx, pdf_dict_gets(ctx, rdb, "Properties"), pdf_to_name(ctx, ocg));
+ ocg = pdf_dict_get(ctx, pdf_dict_get(ctx, rdb, PDF_NAME_Properties), ocg);
}
/* If we haven't been given an ocg at all, then we're visible */
if (!ocg)
@@ -131,9 +130,9 @@ pdf_is_hidden_ocg(fz_context *ctx, pdf_ocg_descriptor *desc, pdf_obj *rdb, const
fz_strlcpy(event_state, event, sizeof event_state);
fz_strlcat(event_state, "State", sizeof event_state);
- type = pdf_to_name(ctx, pdf_dict_gets(ctx, ocg, "Type"));
+ type = pdf_dict_get(ctx, ocg, PDF_NAME_Type);
- if (strcmp(type, "OCG") == 0)
+ if (pdf_name_eq(ctx, type, PDF_NAME_OCG))
{
/* An Optional Content Group */
int default_value = 0;
@@ -141,6 +140,7 @@ pdf_is_hidden_ocg(fz_context *ctx, pdf_ocg_descriptor *desc, pdf_obj *rdb, const
int gen = pdf_to_gen(ctx, ocg);
int len = desc->len;
int i;
+ pdf_obj *es;
/* by default an OCG is visible, unless it's explicitly hidden */
for (i = 0; i < len; i++)
@@ -154,7 +154,7 @@ pdf_is_hidden_ocg(fz_context *ctx, pdf_ocg_descriptor *desc, pdf_obj *rdb, const
/* Check Intents; if our intent is not part of the set given
* by the current config, we should ignore it. */
- obj = pdf_dict_gets(ctx, ocg, "Intent");
+ obj = pdf_dict_get(ctx, ocg, PDF_NAME_Intent);
if (pdf_is_name(ctx, obj))
{
/* If it doesn't match, it's hidden */
@@ -190,7 +190,7 @@ pdf_is_hidden_ocg(fz_context *ctx, pdf_ocg_descriptor *desc, pdf_obj *rdb, const
* correspond to entries in the AS list in the OCG config.
* Given that we don't handle Zoom or User, or Language
* dicts, this is not really a problem. */
- obj = pdf_dict_gets(ctx, ocg, "Usage");
+ obj = pdf_dict_get(ctx, ocg, PDF_NAME_Usage);
if (!pdf_is_dict(ctx, obj))
return default_value;
/* FIXME: Should look at Zoom (and return hidden if out of
@@ -198,39 +198,40 @@ pdf_is_hidden_ocg(fz_context *ctx, pdf_ocg_descriptor *desc, pdf_obj *rdb, const
/* FIXME: Could provide hooks to the caller to check if
* User is appropriate - if not return hidden. */
obj2 = pdf_dict_gets(ctx, obj, event);
- if (strcmp(pdf_to_name(ctx, pdf_dict_gets(ctx, obj2, event_state)), "OFF") == 0)
+ es = pdf_dict_gets(ctx, obj2, event_state);
+ if (pdf_name_eq(ctx, es, PDF_NAME_OFF))
{
return 1;
}
- if (strcmp(pdf_to_name(ctx, pdf_dict_gets(ctx, obj2, event_state)), "ON") == 0)
+ if (pdf_name_eq(ctx, es, PDF_NAME_ON))
{
return 0;
}
return default_value;
}
- else if (strcmp(type, "OCMD") == 0)
+ else if (pdf_name_eq(ctx, type, PDF_NAME_OCMD))
{
/* An Optional Content Membership Dictionary */
- char *name;
+ pdf_obj *name;
int combine, on;
- obj = pdf_dict_gets(ctx, ocg, "VE");
+ obj = pdf_dict_get(ctx, ocg, PDF_NAME_VE);
if (pdf_is_array(ctx, obj)) {
/* FIXME: Calculate visibility from array */
return 0;
}
- name = pdf_to_name(ctx, pdf_dict_gets(ctx, ocg, "P"));
+ name = pdf_dict_get(ctx, ocg, PDF_NAME_P);
/* Set combine; Bit 0 set => AND, Bit 1 set => true means
* Off, otherwise true means On */
- if (strcmp(name, "AllOn") == 0)
+ if (pdf_name_eq(ctx, name, PDF_NAME_AllOn))
{
combine = 1;
}
- else if (strcmp(name, "AnyOff") == 0)
+ else if (pdf_name_eq(ctx, name, PDF_NAME_AnyOff))
{
combine = 2;
}
- else if (strcmp(name, "AllOff") == 0)
+ else if (pdf_name_eq(ctx, name, PDF_NAME_AllOff))
{
combine = 3;
}
@@ -243,7 +244,7 @@ pdf_is_hidden_ocg(fz_context *ctx, pdf_ocg_descriptor *desc, pdf_obj *rdb, const
return 0; /* Should never happen */
fz_try(ctx)
{
- obj = pdf_dict_gets(ctx, ocg, "OCGs");
+ obj = pdf_dict_get(ctx, ocg, PDF_NAME_OCGs);
on = combine & 1;
if (pdf_is_array(ctx, obj)) {
int i, len;
@@ -343,23 +344,23 @@ pdf_process_extgstate(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, pdf_ob
{
pdf_obj *obj;
- obj = pdf_dict_gets(ctx, dict, "LW");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_LW);
if (pdf_is_number(ctx, obj) && proc->op_w)
proc->op_w(ctx, proc, pdf_to_real(ctx, obj));
- obj = pdf_dict_gets(ctx, dict, "LC");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_LC);
if (pdf_is_int(ctx, obj) && proc->op_J)
proc->op_J(ctx, proc, pdf_to_int(ctx, obj));
- obj = pdf_dict_gets(ctx, dict, "LJ");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_LJ);
if (pdf_is_int(ctx, obj) && proc->op_j)
proc->op_j(ctx, proc, pdf_to_int(ctx, obj));
- obj = pdf_dict_gets(ctx, dict, "ML");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_ML);
if (pdf_is_number(ctx, obj) && proc->op_M)
proc->op_M(ctx, proc, pdf_to_real(ctx, obj));
- obj = pdf_dict_gets(ctx, dict, "D");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_D);
if (pdf_is_array(ctx, obj) && proc->op_d)
{
pdf_obj *dash_array = pdf_array_get(ctx, obj, 0);
@@ -367,15 +368,15 @@ pdf_process_extgstate(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, pdf_ob
proc->op_d(ctx, proc, dash_array, pdf_to_real(ctx, dash_phase));
}
- obj = pdf_dict_gets(ctx, dict, "RI");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_RI);
if (pdf_is_name(ctx, obj) && proc->op_ri)
proc->op_ri(ctx, proc, pdf_to_name(ctx, obj));
- obj = pdf_dict_gets(ctx, dict, "FL");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_FL);
if (pdf_is_number(ctx, obj) && proc->op_i)
proc->op_i(ctx, proc, pdf_to_real(ctx, obj));
- obj = pdf_dict_gets(ctx, dict, "Font");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_Font);
if (pdf_is_array(ctx, obj) && proc->op_Tf)
{
pdf_obj *font_ref = pdf_array_get(ctx, obj, 0);
@@ -391,35 +392,35 @@ pdf_process_extgstate(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, pdf_ob
/* transfer functions */
- obj = pdf_dict_gets(ctx, dict, "TR2");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_TR2);
if (pdf_is_name(ctx, obj))
- if (strcmp(pdf_to_name(ctx, obj), "Identity") && strcmp(pdf_to_name(ctx, obj), "Default"))
+ if (!pdf_name_eq(ctx, obj, PDF_NAME_Identity) && !pdf_name_eq(ctx, obj, PDF_NAME_Default))
fz_warn(ctx, "ignoring transfer function");
if (!obj) /* TR is ignored in the presence of TR2 */
{
- pdf_obj *tr = pdf_dict_gets(ctx, dict, "TR");
+ pdf_obj *tr = pdf_dict_get(ctx, dict, PDF_NAME_TR);
if (pdf_is_name(ctx, tr))
- if (strcmp(pdf_to_name(ctx, tr), "Identity"))
+ if (!pdf_name_eq(ctx, tr, PDF_NAME_Identity))
fz_warn(ctx, "ignoring transfer function");
}
/* transparency state */
- obj = pdf_dict_gets(ctx, dict, "CA");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_CA);
if (pdf_is_number(ctx, obj) && proc->op_gs_CA)
proc->op_gs_CA(ctx, proc, pdf_to_real(ctx, obj));
- obj = pdf_dict_gets(ctx, dict, "ca");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_ca);
if (pdf_is_number(ctx, obj) && proc->op_gs_ca)
proc->op_gs_ca(ctx, proc, pdf_to_real(ctx, obj));
- obj = pdf_dict_gets(ctx, dict, "BM");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_BM);
if (pdf_is_array(ctx, obj))
obj = pdf_array_get(ctx, obj, 0);
if (pdf_is_name(ctx, obj) && proc->op_gs_BM)
proc->op_gs_BM(ctx, proc, pdf_to_name(ctx, obj));
- obj = pdf_dict_gets(ctx, dict, "SMask");
+ obj = pdf_dict_get(ctx, dict, PDF_NAME_SMask);
if (proc->op_gs_SMask)
{
if (pdf_is_dict(ctx, obj))
@@ -432,7 +433,7 @@ pdf_process_extgstate(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, pdf_ob
fz_var(xobj);
- group = pdf_dict_gets(ctx, obj, "G");
+ group = pdf_dict_get(ctx, obj, PDF_NAME_G);
if (!group)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot load softmask xobject (%d %d R)", pdf_to_num(ctx, obj), pdf_to_gen(ctx, obj));
xobj = pdf_load_xobject(ctx, csi->doc, group);
@@ -446,21 +447,21 @@ pdf_process_extgstate(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, pdf_ob
for (k = 0; k < colorspace->n; k++)
softmask_bc[k] = 0;
- bc = pdf_dict_gets(ctx, obj, "BC");
+ bc = pdf_dict_get(ctx, obj, PDF_NAME_BC);
if (pdf_is_array(ctx, bc))
{
for (k = 0; k < colorspace->n; k++)
softmask_bc[k] = pdf_to_real(ctx, pdf_array_get(ctx, bc, k));
}
- s = pdf_dict_gets(ctx, obj, "S");
- if (pdf_is_name(ctx, s) && !strcmp(pdf_to_name(ctx, s), "Luminosity"))
+ s = pdf_dict_get(ctx, obj, PDF_NAME_S);
+ if (pdf_name_eq(ctx, s, PDF_NAME_Luminosity))
luminosity = 1;
else
luminosity = 0;
- tr = pdf_dict_gets(ctx, obj, "TR");
- if (tr && strcmp(pdf_to_name(ctx, tr), "Identity"))
+ tr = pdf_dict_get(ctx, obj, PDF_NAME_TR);
+ if (tr && !pdf_name_eq(ctx, tr, PDF_NAME_Identity))
fz_warn(ctx, "ignoring transfer function");
proc->op_gs_SMask(ctx, proc, xobj, csi->rdb, softmask_bc, luminosity);
@@ -474,7 +475,7 @@ pdf_process_extgstate(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, pdf_ob
fz_rethrow(ctx);
}
}
- else if (pdf_is_name(ctx, obj) && !strcmp(pdf_to_name(ctx, obj), "None"))
+ else if (pdf_is_name(ctx, obj) && pdf_name_eq(ctx, obj, PDF_NAME_None))
{
proc->op_gs_SMask(ctx, proc, NULL, NULL, NULL, 0);
}
@@ -486,22 +487,26 @@ pdf_process_Do(fz_context *ctx, pdf_processor *proc, pdf_csi *csi)
{
pdf_obj *xres, *xobj, *subtype;
- xres = pdf_dict_gets(ctx, csi->rdb, "XObject");
+ xres = pdf_dict_get(ctx, csi->rdb, PDF_NAME_XObject);
if (!xres)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot find XObject dictionary");
xobj = pdf_dict_gets(ctx, xres, csi->name);
if (!xobj)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot find XObject resource '%s'", csi->name);
- subtype = pdf_dict_gets(ctx, xobj, "Subtype");
- if (!strcmp(pdf_to_name(ctx, subtype), "Form") && pdf_dict_gets(ctx, xobj, "Subtype2"))
- subtype = pdf_dict_gets(ctx, xobj, "Subtype2");
+ subtype = pdf_dict_get(ctx, xobj, PDF_NAME_Subtype);
+ if (pdf_name_eq(ctx, subtype, PDF_NAME_Form))
+ {
+ pdf_obj *st = pdf_dict_get(ctx, xobj, PDF_NAME_Subtype2);
+ if (st)
+ subtype = st;
+ }
if (!pdf_is_name(ctx, subtype))
fz_throw(ctx, FZ_ERROR_GENERIC, "no XObject subtype specified");
- if (pdf_is_hidden_ocg(ctx, csi->doc->ocg, csi->rdb, proc->event, pdf_dict_gets(ctx, xobj, "OC")))
+ if (pdf_is_hidden_ocg(ctx, csi->doc->ocg, csi->rdb, proc->event, pdf_dict_get(ctx, xobj, PDF_NAME_OC)))
return;
- if (!strcmp(pdf_to_name(ctx, subtype), "Form"))
+ if (pdf_name_eq(ctx, subtype, PDF_NAME_Form))
{
if (proc->op_Do_form)
{
@@ -516,7 +521,7 @@ pdf_process_Do(fz_context *ctx, pdf_processor *proc, pdf_csi *csi)
}
}
- else if (!strcmp(pdf_to_name(ctx, subtype), "Image"))
+ else if (pdf_name_eq(ctx, subtype, PDF_NAME_Image))
{
if (proc->op_Do_image)
{
@@ -562,7 +567,7 @@ pdf_process_CS(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, int stroke)
else
{
pdf_obj *csres, *csobj;
- csres = pdf_dict_gets(ctx, csi->rdb, "ColorSpace");
+ csres = pdf_dict_get(ctx, csi->rdb, PDF_NAME_ColorSpace);
if (!csres)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot find ColorSpace dictionary");
csobj = pdf_dict_gets(ctx, csres, csi->name);
@@ -592,14 +597,14 @@ pdf_process_SC(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, int stroke)
{
pdf_obj *patres, *patobj, *type;
- patres = pdf_dict_gets(ctx, csi->rdb, "Pattern");
+ patres = pdf_dict_get(ctx, csi->rdb, PDF_NAME_Pattern);
if (!patres)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot find Pattern dictionary");
patobj = pdf_dict_gets(ctx, patres, csi->name);
if (!patobj)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot find Pattern resource '%s'", csi->name);
- type = pdf_dict_gets(ctx, patobj, "PatternType");
+ type = pdf_dict_get(ctx, patobj, PDF_NAME_PatternType);
if (pdf_to_int(ctx, type) == 1)
{
@@ -661,7 +666,7 @@ static pdf_obj *
resolve_properties(fz_context *ctx, pdf_csi *csi, pdf_obj *obj)
{
if (pdf_is_name(ctx, obj))
- return pdf_dict_gets(ctx, pdf_dict_gets(ctx, csi->rdb, "Properties"), pdf_to_name(ctx, obj));
+ return pdf_dict_get(ctx, pdf_dict_get(ctx, csi->rdb, PDF_NAME_Properties), obj);
else
return obj;
}
@@ -688,7 +693,7 @@ pdf_process_BDC(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, const char *
return;
/* Wrong type of property */
- if (strcmp(pdf_to_name(ctx, pdf_dict_gets(ctx, properties, "Type")), "OCG"))
+ if (!pdf_name_eq(ctx, pdf_dict_get(ctx, properties, PDF_NAME_Type), PDF_NAME_OCG))
return;
if (pdf_is_hidden_ocg(ctx, csi->doc->ocg, csi->rdb, proc->event, properties))
@@ -785,7 +790,7 @@ pdf_process_keyword(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, fz_strea
case B('g','s'):
{
pdf_obj *gsres, *gsobj;
- gsres = pdf_dict_gets(ctx, csi->rdb, "ExtGState");
+ gsres = pdf_dict_get(ctx, csi->rdb, PDF_NAME_ExtGState);
if (!gsres)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot find ExtGState dictionary");
gsobj = pdf_dict_gets(ctx, gsres, csi->name);
@@ -846,7 +851,7 @@ pdf_process_keyword(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, fz_strea
{
pdf_obj *fontres, *fontobj;
pdf_font_desc *font;
- fontres = pdf_dict_gets(ctx, csi->rdb, "Font");
+ fontres = pdf_dict_get(ctx, csi->rdb, PDF_NAME_Font);
if (!fontres)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot find Font dictionary");
fontobj = pdf_dict_gets(ctx, fontres, csi->name);
@@ -938,7 +943,7 @@ pdf_process_keyword(fz_context *ctx, pdf_processor *proc, pdf_csi *csi, fz_strea
{
pdf_obj *shaderes, *shadeobj;
fz_shade *shade;
- shaderes = pdf_dict_gets(ctx, csi->rdb, "Shading");
+ shaderes = pdf_dict_get(ctx, csi->rdb, PDF_NAME_Shading);
if (!shaderes)
fz_throw(ctx, FZ_ERROR_GENERIC, "cannot find Shading dictionary");
shadeobj = pdf_dict_gets(ctx, shaderes, csi->name);
@@ -1222,7 +1227,7 @@ pdf_process_contents(fz_context *ctx, pdf_processor *proc, pdf_document *doc, pd
void
pdf_process_annot(fz_context *ctx, pdf_processor *proc, pdf_document *doc, pdf_page *page, pdf_annot *annot, fz_cookie *cookie)
{
- int flags = pdf_to_int(ctx, pdf_dict_gets(ctx, annot->obj, "F"));
+ int flags = pdf_to_int(ctx, pdf_dict_get(ctx, annot->obj, PDF_NAME_F));
if (flags & (F_Invisible | F_Hidden))
return;
@@ -1238,7 +1243,7 @@ pdf_process_annot(fz_context *ctx, pdf_processor *proc, pdf_document *doc, pdf_p
/* TODO: NoZoom and NoRotate */
/* XXX what resources, if any, to use for this check? */
- if (pdf_is_hidden_ocg(ctx, doc->ocg, NULL, proc->event, pdf_dict_gets(ctx, annot->obj, "OC")))
+ if (pdf_is_hidden_ocg(ctx, doc->ocg, NULL, proc->event, pdf_dict_get(ctx, annot->obj, PDF_NAME_OC)))
return;
if (proc->op_q && proc->op_cm && proc->op_Do_form && proc->op_Q)
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-01 21:53:33 +0000