First commit

README.md

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+# kakoune-sudo-write
+
+[kakoune](http://kakoune.org) plugin to save files that you do not have write permissions for. Uses `sudo` and preserves file ownership and read-write attributes.
+
+## Install
+
+Add `sudo-write.kak` to your autoload dir: `~/.config/kak/autoload/`, or source it manually.
+
+## Usage
+
+Call the `sudo-write` command. If your password has not been cached by `sudo`, you will be prompted to input it. Upon success, the buffer is written to the file.
+
+Note that the plugin will not work if you do not use any cache for `sudo`.
+
+**Warning**: while the input is hidden, the password is still passed through stdin to `sudo`. Do not use this plugin if you are not comfortable with this idea.
+
+## License
+
+Unlicense

UNLICENSE

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+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org/>

sudo-write.kak

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+# save the current buffer to its file as root
+# (optionally pass the user password to sudo if not cached)
+
+declare-option -hidden str sudo_write_tmp
+
+define-command -hidden sudo-write-impl %{
+    %sh{
+        echo "set-option buffer sudo_write_tmp '$(mktemp --tmpdir XXXXXXXX)'"
+    }
+    write %opt{sudo_write_tmp}
+    %sh{
+        sudo -- dd if="$kak_opt_sudo_write_tmp" of="$kak_buffile" >/dev/null 2>&1
+        if [ $? -eq 0 ]; then
+            echo "edit!"
+        else
+            echo "echo -markup '{Error}Something went wrong'"
+        fi
+        rm -f "$kak_opt_sudo_write_tmp"
+    }
+    unset-option buffer sudo_write_tmp
+}
+
+define-command -hidden -params 1 cache-password %{
+    eval -no-hooks -draft %{
+        edit -scratch *sudo_write_pass*
+        reg '"' %arg{1}
+        exec "<a-p>|sudo -S echo ok<ret>"
+        try %{
+            exec <a-k>ok<ret>
+            delete-buffer
+        } catch %{
+            delete-buffer
+            throw
+        }
+    }
+}
+
+def sudo-write -docstring "Write the content of the buffer using sudo" %{
+    %sh{
+        # check if the password is cached
+        if sudo -n true > /dev/null 2>&1; then
+            echo "sudo-write-impl"
+        else
+            # if not, ask for it
+            echo "prompt -password 'Password: ' %{
+                try %{
+                    cache-password %val{text}
+                    sudo-write-impl
+                } catch %{
+                    echo -markup '{Error}Incorrect password'
+                }
+            }"
+        fi
+    }
+}
+