From 70e2aa783a7bd8436469712c2cd6c73f1411ac18 Mon Sep 17 00:00:00 2001
From: ellson <devnull@localhost>
Date: Thu, 4 Sep 2008 18:51:52 +0000
Subject: [PATCH] redirect c++ ostream back to C gvdevice_write()
---
plugin/lasi/gvrender_lasi.cpp | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
diff --git a/plugin/lasi/gvrender_lasi.cpp b/plugin/lasi/gvrender_lasi.cpp
index 24262f08b..13922f8e6 100644
--- a/plugin/lasi/gvrender_lasi.cpp
+++ b/plugin/lasi/gvrender_lasi.cpp
@@ -45,6 +45,7 @@ using namespace std;
extern "C" {
extern void epsf_define(FILE * of);
extern char *ps_string(char *ins, int latin);
+ extern size_t gvdevice_write(GVJ_t *job, const unsigned char *s, unsigned int n);
}
typedef enum { FORMAT_PS, FORMAT_PS2, FORMAT_EPS } format_type;
@@ -121,8 +122,25 @@ static void lasi_begin_job(GVJ_t * job)
doc.osHeader() << "%%For: " << job->common->user << endl;
}
+// ostream wrapper for gvdevice_write
+// Based on idea in: http://www.oneunified.net/blog/OpenSource/Programming/streamoverload.article
+class Gvout : public streambuf {
+private:
+ GVJ_t *thisjob;
+ // write a string s of length n to the current gvdevice
+ int xsputn (char_type* s, streamsize n) {
+ return gvdevice_write(thisjob, (const unsigned char*)s, n);
+ }
+public:
+ Gvout (GVJ_t *job) {
+ thisjob=job;
+ }
+};
+
static void lasi_end_job(GVJ_t * job)
{
+ ostream gvout(new Gvout(job));
+
// gvdevice_fputs(job, "%%Trailer\n");
if (job->render.id != FORMAT_EPS)
// gvdevice_printf(job, "%%%%Pages: %d\n", job->common->viewNum);
@@ -141,7 +159,8 @@ static void lasi_end_job(GVJ_t * job)
doc.osFooter() << "restore" << endl;
// gvdevice_fputs(job, "%%EOF\n");
- doc.write(cout);
+// doc.write(cout);
+ doc.write(gvout);
}
static void lasi_begin_graph(GVJ_t * job)
--
2.40.0