w3mail

commit b1cd1b5ccd153c9ac9dd9577a8c7a53ef892c697
parent a6555720bd5a325452c152dcd6028dd89619102d
Author: Tomas Hlavaty <tom@logand.com>
Date:   Fri, 28 Jan 2011 02:07:07 +0100

xpath_filter implemented

Diffstat:
M
w3mail.c
 | 
71
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------

1 file changed, 65 insertions(+), 6 deletions(-)
diff --git a/w3mail.c b/w3mail.c
@@ -57,6 +57,64 @@ static int equal(char *str1, char *str2) {
   return 0 == strcmp(str1, str2);
 }
 
+static int sh_cp(char *fin, char *fout) {
+  return systemf("cp %s %s", fin, fout);
+}
+
+static int sh_tidy(char *fin, char *fout) {
+  // tidy fragile, no html5, tidy generator, not parser! replace
+  int x = systemf("tidy -q -n -c -asxml -o %s -f /dev/null %s", fout, fin);
+  return x == 0 || x == 1 ? 0 : x;
+}
+
+static int fix_xml(char *fin, char *fout) {
+  return systemf("~/picolisp/p @lib/xml.l -'xml (_xml)' <%s >%s", fin, fout);
+}
+
+static void fix_xpath(char *xpath) {
+  while(*xpath) {
+    if('"' == *xpath)
+      *xpath = '\'';
+    xpath++;
+  }
+}
+
+static int sh_xpath(char *fin, char *fout, char *xpath) {
+  char buf[BLEN];
+  strcpy(buf, xpath);
+  fix_xpath(buf);
+  return systemf("xmlstarlet sel -t -c \"%s\" <%s >%s", buf, fin, fout);
+}
+
+static int fix_namespace(char *fin, char *fout) {
+  // TODO pyx + p2x fragile, use something better
+  return systemf("cat %s | xmlstarlet pyx | grep -v Axmlns | xmlstarlet p2x >%s", fin, fout);
+}
+
+static int xpath_filter(char *fin, char *fout, char *xpath) {
+  if(sh_tidy(fin, fout)) {
+    if(fix_xml(fin, fout))
+      return 1;
+    else {
+      sh_cp(fout, fin);
+      if(sh_tidy(fin, fout))
+        return 1;
+    }
+  }
+  sh_cp(fout, fin);
+  if(fix_namespace(fin, fout))
+    return 1;
+  return sh_xpath(fin, fout, xpath);
+}
+
+static int custom_filter(char *fin, char *fout, char *cmd) {
+  return systemf("~/.w3mail/filter/%s <%s >%s", cmd, fin, fout);
+}
+
+static int default_filter(char *fin, char *fout) {
+  return systemf("~/.w3mail/filter/default <%s >%s", fin, fout);
+}
+
 struct tidy {
   char *fin;
   char *fout;
@@ -75,16 +133,17 @@ static void cb_tidy(void *udata, FILE* in) {
     sscanf(line, "%s %s %s %n", name, url, type, &n);
     if(url[0] && head(url, x->url)) {
       if(equal("xpath", type)) {
-        if(!systemf("~/.w3mail/filter/xpath \"%s\" <%s >%s", &line[n], x->fin, x->fout))
-          return;
-      }
-      else if(equal("filter", type)) {
-        if(!systemf("~/.w3mail/filter/%s <%s >%s", &line[n], x->fin, x->fout))
+        if(!xpath_filter(x->fin, x->fout, &line[n]))
           return;
       }
+      else
+        if(equal("filter", type))
+          if(!custom_filter(x->fin, x->fout, &line[n]))
+            return;
     }
   }
-  systemf("~/.w3mail/filter/default <%s >%s", x->fin, x->fout);
+  if(default_filter(x->fin, x->fout))
+    sh_cp(x->fin, x->fout);
 }
 
 static void tidy(char *fin, char *fout, char *url) {