Merge branch 'pick' into master

[mmh] / sbr / getthreadid.c

diff --git a/sbr/getthreadid.c b/sbr/getthreadid.c
new file mode 100644 (file)
index 0000000..99a7d67
--- /dev/null
+++ b/sbr/getthreadid.c
@@ -0,0 +1,61 @@
+#include <h/mh.h>
+#include <h/utils.h>
+#include <h/addrsbr.h>
+
+static char *threadid(char *, char *);
+
+char *
+getthreadid(const char *path)
+{
+       char *msgid = NULL;
+       char *referens = NULL;
+       char *ret;
+       struct field f = {{0}};
+       enum state state = FLD2;
+       FILE *file = fopen(path, "r");
+
+       while (state == FLD2 && !msgid && !referens) {
+               switch (state = m_getfld2(state, &f, file)) {
+               case FLD2:
+                       if (strncasecmp("message-id", f.name, f.namelen)==0) {
+                               msgid = f.value;
+                               f.value = NULL;
+                       } else if (strncasecmp("references", f.name, f.namelen)==0) {
+                               referens = f.value;
+                               f.value = NULL;
+                       }
+                       break;
+               default:
+                       fclose(file);
+                       break;
+               }
+       }
+
+       ret = threadid(msgid, referens);
+
+       mh_free0(&msgid);
+       mh_free0(&referens);
+
+       return ret;
+}
+
+static char *
+threadid(char *msgid, char *referens)
+{
+       char *threadfrom;
+       char *start, *end;
+       char *cp;
+
+       threadfrom = referens ? referens : msgid;
+
+       start = strchr(threadfrom, '<');
+       end = strchr(start, '>');
+       if (!(*start) || !(*end)) {
+               return NULL;
+       }
+       *end = '\0';
+       cp = mh_xstrdup(start + 1);
+       *end = '>';
+
+       return cp;
+}