Improve broken cookie handling, add multipart to form

Now it's not as horribly broken as before (but it's still far from
perfect). We can at least log in to sr.ht (hooray).

The form multipart part is straightforward, just pass what we used to pass
long ago before I broke multipart.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/utils/twtstr.nim b/src/utils/twtstr.nim
index 6d3c6f08..a9437a35 100644
--- a/src/utils/twtstr.nim
+++ b/src/utils/twtstr.nim
@@ -259,6 +259,17 @@ func afterLast*(s: string, c: set[char], n = 1): string =
 
 func afterLast*(s: string, c: char, n = 1): string = s.afterLast({c}, n)
 
+func beforeLast*(s: string, c: set[char], n = 1): string =
+  var j = 0
+  for i in countdown(s.high, 0):
+    if s[i] in c:
+      inc j
+      if j == n:
+        return s.substr(0, i)
+  return s
+
+func beforeLast*(s: string, c: char, n = 1): string = s.afterLast({c}, n)
+
 proc c_sprintf(buf, fm: cstring): cint {.header: "<stdio.h>", importc: "sprintf", varargs}
 
 # From w3m