regex: re-work compileSearchRegex

I've gotten tired of not being able to search for forward slashes.

Now it works like in vim, and you can also set default ignore case in
the config.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/utils/twtstr.nim b/src/utils/twtstr.nim
index 80b6be65..1916fff5 100644
--- a/src/utils/twtstr.nim
+++ b/src/utils/twtstr.nim
@@ -713,3 +713,19 @@ proc makeCRLF*(s: string): string =
       result &= '\n'
     else:
       result &= s[i]
+
+func strictParseEnum*[T: enum](s: string): Opt[T] =
+  # cmp when len is small enough, otherwise hashmap
+  when {T.low..T.high}.len <= 4:
+    for e in T.low .. T.high:
+      if $e == s:
+        return ok(e)
+  else:
+    const tab = (func(): Table[string, T] =
+      result = initTable[string, T]()
+      for e in T.low .. T.high:
+        result[$e] = e
+    )()
+    if s in tab:
+      return ok(tab[s])
+  return err()