page: experimental epub support

diff --git a/sys/src/cmd/page.c b/sys/src/cmd/page.c
index 0cb67ade676dc4c1fe22549f3e41d6b0a9f67338..a3ab0d82029e11263315f4034796fcc296366cf0 100644 (file)
--- a/sys/src/cmd/page.c
+++ b/sys/src/cmd/page.c
@@ -167,7 +167,7 @@ catchnote(void *, char *msg)
 void
 pipeline(int fd, char *fmt, ...)
 {
-       char buf[128], *argv[4];
+       char buf[NPATH], *argv[4];
        va_list arg;
        int pfd[2];
 
@@ -205,6 +205,16 @@ pipeline(int fd, char *fmt, ...)
        close(pfd[0]);
 }
 
+char*
+shortname(char *s)
+{
+       char *x;
+       if(x = strrchr(s, '/'))
+               if(x[1] != 0)
+                       return x+1;
+       return s;
+}
+
 int
 popenfile(Page*);
 
@@ -270,6 +280,52 @@ popentape(Page *p)
        return p->open(p);
 }
 
+int
+popenepub(Page *p)
+{
+       char buf[NPATH], *s, *e;
+       int n, fd;
+
+       fd = p->fd;
+       p->fd = -1;
+       s = buf;
+       e = buf+sizeof(buf)-1;
+       s += snprint(s, e-s, "%s/", (char*)p->data);
+       free(p->data);
+       p->data = nil;
+       pipeline(fd, "awk '/\\<rootfile/{"
+               "if(match($0, /full\\-path\\=\\\"([^\\\"]+)\\\"/)){"
+               "print substr($0, RSTART+11,RLENGTH-12);exit}}'");
+       n = read(fd, s, e - s);
+       close(fd);
+       if(n <= 0)
+               return -1;
+       while(n > 0 && s[n-1] == '\n')
+               n--;
+       s += n;
+       *s = 0;
+       if((fd = open(buf, OREAD)) < 0)
+               return -1;
+       pipeline(fd, "awk '/\\<item/{"
+               "if(match($0, /id\\=\\\"([^\\\"]+)\\\"/)){"
+               "id=substr($0, RSTART+4, RLENGTH-5);"
+               "if(match($0, /href\\=\\\"([^\\\"]+)\\\"/)){"
+               "item[id]=substr($0, RSTART+6, RLENGTH-7)}}};"
+               "/\\<itemref/{"
+               "if(match($0, /idref\\=\\\"([^\\\"]+)\\\"/)){"
+               "ref=substr($0, RSTART+7, RLENGTH-8);"
+               "print item[ref]; fflush}}'");
+       s = strrchr(buf, '/')+1;
+       while((n = read(fd, s, e-s)) > 0){
+               while(n > 0 && s[n-1] == '\n')
+                       n--;
+               s[n] = 0;
+               addpage(p, shortname(buf), popenfile, strdup(buf), -1);
+       }
+       close(fd);
+       return -1;
+}
+
 
 typedef struct Ghost Ghost;
 struct Ghost
@@ -534,6 +590,15 @@ popenfile(Page *p)
        if(d->mode & DMDIR){
                free(d);
                d = nil;
+
+               snprint(buf, sizeof(buf), "%s/META-INF/container.xml", file);
+               if((tfd = open(buf, OREAD)) >= 0){
+                       close(fd);
+                       p->fd = tfd;
+                       p->open = popenepub;
+                       return p->open(p);
+               }
+
                if((n = dirreadall(fd, &d)) < 0)
                        goto Err1;
                qsort(d, n, sizeof d[0], dircmp);
@@ -558,6 +623,10 @@ popenfile(Page *p)
                p->data = "lp -dstdout";
                p->open = popengs;
        }
+       else if(memcmp(buf, "<?xml", 5) == 0){
+               p->data = "htmlfmt -c utf8 | lp -dstdout";
+               p->open = popengs;
+       }
        else if(memcmp(buf, "\xF7\x02\x01\x83\x92\xC0\x1C;", 8) == 0){
                p->data = "dvips -Pps -r0 -q1 -f1";
                p->open = popengs;
@@ -573,8 +642,7 @@ popenfile(Page *p)
        else if(memcmp(buf, "PK\x03\x04", 4) == 0){
                p->data = "fs/zipfs";
                p->open = popentape;
-       }
-       else if(memcmp(buf, "GIF", 3) == 0)
+       }else if(memcmp(buf, "GIF", 3) == 0)
                p->data = "gif -t9";
        else if(memcmp(buf, "\111\111\052\000", 4) == 0) 
                p->data = "fb/tiff2pic | fb/3to1 rgbv | fb/pcp -tplan9";
@@ -1054,16 +1122,6 @@ void drawerr(Display *, char *msg)
        sysfatal("draw: %s", msg);
 }
 
-char*
-shortname(char *s)
-{
-       char *x;
-       if(x = strrchr(s, '/'))
-               if(x[1] != 0)
-                       return x+1;
-       return s;
-}
-
 void
 usage(void)
 {