Update pdf_write_document to support incremental update

5 files changed, 43 insertions, 2 deletions

diff --git a/platform/x11/jstest_main.c b/platform/x11/jstest_main.c
index 2003ad55..a07385bc 100644
--- a/platform/x11/jstest_main.c
+++ b/platform/x11/jstest_main.c
@@ -108,6 +108,10 @@ void winreplacefile(char *source, char *target)
 {
 }
 
+void wincopyfile(char *source, char *target)
+{
+}
+
 void wincursor(pdfapp_t *app, int curs)
 {
 }
diff --git a/platform/x11/pdfapp.c b/platform/x11/pdfapp.c
index e76c6c7c..71561f14 100644
--- a/platform/x11/pdfapp.c
+++ b/platform/x11/pdfapp.c
@@ -299,13 +299,15 @@ static int pdfapp_save(pdfapp_t *app)
 	{
 		fz_write_options opts;
 
-		opts.do_ascii = 1;
+		opts.do_incremental = 1;
+		opts.do_ascii = 0;
 		opts.do_expand = 0;
-		opts.do_garbage = 1;
+		opts.do_garbage = 0;
 		opts.do_linear = 0;
 
 		if (strcmp(buf, app->docpath) != 0)
 		{
+			wincopyfile(app->docpath, buf);
 			fz_write_document(app->doc, buf, &opts);
 			return 1;
 		}
@@ -316,6 +318,7 @@ static int pdfapp_save(pdfapp_t *app)
 
 			fz_try(app->ctx)
 			{
+				wincopyfile(app->docpath, buf);
 				fz_write_document(app->doc, buf, &opts);
 				written = 1;
 			}
diff --git a/platform/x11/pdfapp.h b/platform/x11/pdfapp.h
index 3e40e0c4..0b89923e 100644
--- a/platform/x11/pdfapp.h
+++ b/platform/x11/pdfapp.h
@@ -42,6 +42,7 @@ extern void winalert(pdfapp_t *, pdf_alert_event *alert);
 extern void winprint(pdfapp_t *);
 extern void winadvancetimer(pdfapp_t *, float duration);
 extern void winreplacefile(char *source, char *target);
+extern void wincopyfile(char *source, char *target);
 
 struct pdfapp_s
 {
diff --git a/platform/x11/win_main.c b/platform/x11/win_main.c
index cc01d539..a22e7fc0 100644
--- a/platform/x11/win_main.c
+++ b/platform/x11/win_main.c
@@ -248,6 +248,28 @@ void winreplacefile(char *source, char *target)
 #endif
 }
 
+void wincopyfile(char *source, char *target)
+{
+	wchar_t wsource[PATH_MAX];
+	wchar_t wtarget[PATH_MAX];
+
+	int sz = MultiByteToWideChar(CP_UTF8, 0, source, -1, wsource, PATH_MAX);
+	if (sz == 0)
+	{
+		winerror(&gapp, "cannot convert filename to Unicode");
+		return;
+	}
+
+	sz = MultiByteToWideChar(CP_UTF8, 0, target, -1, wtarget, PATH_MAX);
+	if (sz == 0)
+	{
+		winerror(&gapp, "cannot convert filename to Unicode");
+		return;
+	}
+
+	CopyFile(wsource, wtarget, FALSE);
+}
+
 static char pd_filename[256] = "The file is encrypted.";
 static char pd_password[256] = "";
 static wchar_t pd_passwordw[256] = {0};
diff --git a/platform/x11/x11_main.c b/platform/x11/x11_main.c
index 481adce1..0bcb98f4 100644
--- a/platform/x11/x11_main.c
+++ b/platform/x11/x11_main.c
@@ -281,6 +281,17 @@ void winreplacefile(char *source, char *target)
 	rename(source, target);
 }
 
+void wincopyfile(char *source, char *target)
+{
+	char *buf = malloc(strlen(source)+strlen(target)+4);
+	if (buf)
+	{
+		sprintf(buf, "cp %s %s", source, target);
+		system(buf);
+		free(buf);
+	}
+}
+
 void cleanup(pdfapp_t *app)
 {
 	fz_context *ctx = app->ctx;