Add gitea support (#184)

Author: SuperSandro2000

git-open

@@ -168,6 +168,7 @@ function getConfig() {
 
 domain=$(getConfig "domain")
 protocol=$(getConfig "protocol")
+forge=$(getConfig "forge")
 
 # Remote ref to open
 remote_ref=${upstream_branch:-${branch:-$(git describe --tags --exact-match 2>/dev/null || git rev-parse HEAD)}}
@@ -183,7 +184,11 @@ else
   # Make # and % characters url friendly
   #   github.com/paulirish/git-open/pull/24
   remote_ref=${remote_ref//%/%25} remote_ref=${remote_ref//#/%23}
-  providerBranchRef="/tree/$remote_ref"
+  if [[ $forge == 'gitea' ]]; then
+    providerBranchRef="/src/branch/$remote_ref"
+  else
+    providerBranchRef="/tree/$remote_ref"
+  fi
 fi
 
 if [[ "$domain" == 'bitbucket.org' ]]; then

git-open.1.md

@@ -118,6 +118,20 @@ git config open.default.remote upstream
 This is equivalent to always typing `git open upstream`.
 
 
+### Gitea options
+
+To configure Gitea support you need to set the following option.
+
+`open.[gitdomain].forge`
+  The git forge present at the git domain. This only needs to be set for Gitea because it uses another branch URL format.
+
+**Example**
+
+```sh
+git config [--global] "open.https://gitea.internal.biz.forge" "gitea"
+```
+
+
 ### GitLab options
 
 To configure GitLab support (or other unique hosting situations) you may need to set some options.