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53 lines
1.7 KiB
Diff
53 lines
1.7 KiB
Diff
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From 9b6fe6e1008f1b9b7fc3109b5f94db8d970fbcaa Mon Sep 17 00:00:00 2001
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From: Ken Sharp <Ken.Sharp@artifex.com>
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Date: Mon, 18 Sep 2023 15:47:12 +0100
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Subject: [PATCH] PDF interpreter - fix PageList processing
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Bug #707137 "Error processing PDF while using the parameter -sPageList"
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There are actually 2 problems; firstly a copy/paste error of the
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operand stack index when returning the page list meant that the values
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were returned in reverse order.
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Secondly the PageList string wasn't actually being passed as an operand
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at all.
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This only affects the PDF interpreter because it (unfortunately) uses a
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different mechanism from the PostScript interpreter.
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---
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Resource/Init/pdf_main.ps | 3 +--
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psi/zpdfops.c | 2 +-
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2 files changed, 2 insertions(+), 3 deletions(-)
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diff --git a/Resource/Init/pdf_main.ps b/Resource/Init/pdf_main.ps
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index e541835ae..73097f1a7 100644
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--- a/Resource/Init/pdf_main.ps
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+++ b/Resource/Init/pdf_main.ps
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@@ -710,8 +710,7 @@ currentdict /PDFSwitches undef
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{
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/PageList where {
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pop
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- pdfpagecount
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- .PDFparsePageList
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+ PageList pdfpagecount .PDFparsePageList
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dup 0 eq { % No ranges, error
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(\n **** Error: Invalid PageList: ) print
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PageList print
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diff --git a/psi/zpdfops.c b/psi/zpdfops.c
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index 207130f1a..e7e0a42ee 100644
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--- a/psi/zpdfops.c
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+++ b/psi/zpdfops.c
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@@ -1447,7 +1447,7 @@ static int zPDFparsePageList(i_ctx_t *i_ctx_p)
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}
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/* push the even/odd, start, end triples on the stack */
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for (i=0; i < size; i++) {
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- o = ref_stack_index(&o_stack, 0);
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+ o = ref_stack_index(&o_stack, size - i);
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if (o == NULL)
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return_error(gs_error_stackunderflow);
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/* skip the initial "ordered" flag */
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--
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2.34.1
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