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-rw-r--r--include/mupdf/pdf/document.h6
-rw-r--r--platform/android/viewer/jni/mupdf.c2
-rw-r--r--platform/x11/pdfapp.c2
-rw-r--r--source/pdf/pdf-write.c11
4 files changed, 19 insertions, 2 deletions
diff --git a/include/mupdf/pdf/document.h b/include/mupdf/pdf/document.h
index f8ef6bfb..857f2d58 100644
--- a/include/mupdf/pdf/document.h
+++ b/include/mupdf/pdf/document.h
@@ -413,4 +413,10 @@ void pdf_parse_write_options(fz_context *ctx, pdf_write_options *opts, const cha
*/
void pdf_save_document(fz_context *ctx, pdf_document *doc, const char *filename, pdf_write_options *opts);
+/*
+ pdf_can_be_saved_incrementally: Return true if the document can be saved
+ incrementally. (e.g. it has not been repaired, and it is not encrypted)
+*/
+int pdf_can_be_saved_incrementally(fz_context *ctx, pdf_document *doc);
+
#endif
diff --git a/platform/android/viewer/jni/mupdf.c b/platform/android/viewer/jni/mupdf.c
index f9d6042b..451671c7 100644
--- a/platform/android/viewer/jni/mupdf.c
+++ b/platform/android/viewer/jni/mupdf.c
@@ -2600,7 +2600,7 @@ JNI_FN(MuPDFCore_saveInternal)(JNIEnv * env, jobject thiz)
char *tmp;
pdf_write_options opts = { 0 };
- opts.do_incremental = 1;
+ opts.do_incremental = pdf_can_be_saved_incrementally(ctx, idoc);
tmp = tmp_path(glo->current_path);
if (tmp)
diff --git a/platform/x11/pdfapp.c b/platform/x11/pdfapp.c
index fd1f6a1a..9d1debbb 100644
--- a/platform/x11/pdfapp.c
+++ b/platform/x11/pdfapp.c
@@ -529,7 +529,7 @@ static int pdfapp_save(pdfapp_t *app)
{
pdf_write_options opts = { 0 };
- opts.do_incremental = 1;
+ opts.do_incremental = pdf_can_be_saved_incrementally(app->ctx, idoc);
if (strcmp(buf, app->docpath) != 0)
{
diff --git a/source/pdf/pdf-write.c b/source/pdf/pdf-write.c
index ade277ce..87c31926 100644
--- a/source/pdf/pdf-write.c
+++ b/source/pdf/pdf-write.c
@@ -2804,6 +2804,15 @@ void pdf_parse_write_options(fz_context *ctx, pdf_write_options *opts, const cha
}
}
+int pdf_can_be_saved_incrementally(fz_context *ctx, pdf_document *doc)
+{
+ if (doc->repair_attempted)
+ return 0;
+ if (doc->crypt != NULL)
+ return 0;
+ return 1;
+}
+
void pdf_save_document(fz_context *ctx, pdf_document *doc, const char *filename, pdf_write_options *in_opts)
{
pdf_write_options opts_defaults = { 0 };
@@ -2819,6 +2828,8 @@ void pdf_save_document(fz_context *ctx, pdf_document *doc, const char *filename,
if (!in_opts)
in_opts = &opts_defaults;
+ if (in_opts->do_incremental && doc->repair_attempted)
+ fz_throw(ctx, FZ_ERROR_GENERIC, "Can't do incremental writes on a repaired file");
if (in_opts->do_incremental && in_opts->do_garbage)
fz_throw(ctx, FZ_ERROR_GENERIC, "Can't do incremental writes with garbage collection");
if (in_opts->do_incremental && in_opts->do_linear)