page: move cmd/page/cache.c to src/cmd/page/cache.c

not sure how the codebot screwed that up.

1 files changed, 0 insertions, 196 deletions

diff --git a/cmd/page/cache.c b/cmd/page/cache.c
deleted file mode 100644
index 87c2c25a..00000000
--- a/cmd/page/cache.c
+++ /dev/null
@@ -1,196 +0,0 @@
-#include <u.h>
-#include <libc.h>
-#include <draw.h>
-#include <cursor.h>
-#include <event.h>
-#include <bio.h>
-#include <plumb.h>
-#include <ctype.h>
-#include <keyboard.h>
-#include <thread.h>
-#include "page.h"
-
-typedef struct Cached Cached;
-struct Cached
-{
-	Document *doc;
-	int page;
-	int angle;
-	Image *im;
-};
-
-static Cached cache[5];
-static int rabusy;
-
-static Image*
-questionmark(void)
-{
-	static Image *im;
-
-	if(im)
-		return im;	
-	im = xallocimage(display, Rect(0,0,50,50), GREY1, 1, DBlack);
-	if(im == nil)
-		return nil;
-	string(im, ZP, display->white, ZP, display->defaultfont, "?");
-	return im;
-}
-
-void
-cacheflush(void)
-{
-	int i;
-	Cached *c;
-
-	for(i=0; i<nelem(cache); i++){
-		c = &cache[i];
-		if(c->im)
-			freeimage(c->im);
-		c->im = nil;
-		c->doc = nil;
-	}
-}
-
-static Image*
-_cachedpage(Document *doc, int angle, int page, char *ra)
-{
-	int i;
-	Cached *c, old;
-	Image *im, *tmp;
-
-	if((page < 0 || page >= doc->npage) && !doc->fwdonly)
-		return nil;
-
-Again:
-	for(i=0; i<nelem(cache); i++){
-		c = &cache[i];
-		if(c->doc == doc && c->angle == angle && c->page == page){
-			if(chatty) fprint(2, "cache%s hit %d\n", ra, page);
-			goto Found;
-		}
-		if(c->doc == nil)
-			break;
-	}
-
-	if(i >= nelem(cache))
-		i = nelem(cache)-1;
-	c = &cache[i];
-	if(c->im)
-		freeimage(c->im);
-	c->im = nil;
-	c->doc = nil;
-	c->page = -1;
-
-	if(chatty) fprint(2, "cache%s load %d\n", ra, page);
-	im = doc->drawpage(doc, page);
-	if(im == nil){
-		if(doc->fwdonly)	/* end of file */
-			wexits(0);
-		im = questionmark();
-		if(im == nil){
-		Flush:
-			if(i > 0){
-				cacheflush();
-				goto Again;
-			}
-			fprint(2, "out of memory: %r\n");
-			wexits("memory");
-		}
-		return im;
-	}
-
-	if(im->r.min.x != 0 || im->r.min.y != 0){
-		/* translate to 0,0 */
-		tmp = xallocimage(display, Rect(0, 0, Dx(im->r), Dy(im->r)), im->chan, 0, DNofill);
-		if(tmp == nil){
-			freeimage(im);
-			goto Flush;
-		}
-		drawop(tmp, tmp->r, im, nil, im->r.min, S);
-		freeimage(im);
-		im = tmp;
-	}
-
-	switch(angle){
-	case 90:
-		im = rot90(im);
-		break;
-	case 180:
-		rot180(im);
-		break;
-	case 270:
-		im = rot270(im);
-		break;
-	}
-	if(im == nil)
-		goto Flush;
-
-	c->doc = doc;
-	c->page = page;
-	c->angle = angle;
-	c->im = im;
-
-Found:
-	if(chatty) fprint(2, "cache%s mtf %d @%d:", ra, c->page, i);
-	old = *c;
-	memmove(cache+1, cache, (c-cache)*sizeof cache[0]);
-	cache[0] = old;
-	if(chatty){
-		for(i=0; i<nelem(cache); i++)
-			fprint(2, " %d", cache[i].page);
-		fprint(2, "\n");
-	}
-	if(chatty) fprint(2, "cache%s return %d %p\n", ra, old.page, old.im);
-	return old.im;
-}
-
-static void
-raproc(void *a)
-{
-	Cached *c;
-	
-	c = a;
-	lockdisplay(display);
-	_cachedpage(c->doc, c->angle, c->page, "-ra");
-	rabusy = 0;
-	unlockdisplay(display);
-	free(c);
-	threadexits(0);
-}
-
-Image*
-cachedpage(Document *doc, int angle, int page)
-{
-	static int lastpage = -1;
-	Cached *c;
-	Image *im;
-	int ra;
-	
-	if(doc->npage < 1)
-		return display->white;
-
-	im = _cachedpage(doc, angle, page, "");
-	if(im == nil)
-		return nil;
-
-	/* readahead */
-	ra = -1;
-	if(!rabusy){
-		if(page == lastpage+1)
-			ra = page+1;
-		else if(page == lastpage-1)
-			ra = page-1;
-	}
-	lastpage = page;
-	if(ra >= 0){
-		c = emalloc(sizeof(*c));
-		c->doc = doc;
-		c->angle = angle;
-		c->page = ra;
-		c->im = nil;
-		rabusy = 1;
-		if(proccreate(raproc, c, mainstacksize) == -1)
-			rabusy = 0;
-	}
-	return im;
-}