# std/browsers

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This module implements a simple proc for opening URLs with the user's default browser.

Unstable API.

# Imports

since, strutils, assertions, os, osproc

# Consts

    osOpenCmd = "xdg-open"

  Alias for the operating system specific "open" command, `"open"` on OSX, MacOS and Windows, `"xdg-open"` on Linux, BSD, etc. Source Edit

# Procs

    proc openDefaultBrowser() {....deprecated: "not implemented, please open with a specific url instead",
                                raises: [IOError],
                                tags: [ExecIOEffect, ReadEnvEffect, RootEffect],
                                forbids: [].}

  Deprecated: not implemented, please open with a specific url instead

  Intends to open the user's default browser without any `url` (blank page). This does not block. Intends to implement IETF RFC-6694 Section 3, ("about:blank" is reserved for a blank page).

  Beware that this intended behavior is not implemented and considered not worthy to implement here.

  The following describes the behavior of current implementation:

  - Under Windows, this will only cause a pop-up dialog asking the assocated application with `about` (as Windows simply treats `about:` as a protocol like `http`).
  - Under Mac OS X the `open "about:blank"` command is used.
  - Under Unix, it is checked if `xdg-open` exists and used if it does and open the application assocated with `text/html` mime (not `x-scheme-handler/http`, so maybe html-viewer other than your default browser is opened). Otherwise the environment variable `BROWSER` is used to determine the default browser to use.

  This proc doesn't raise an exception on error, beware.

      block: openDefaultBrowser()

  See also:

  - https://tools.ietf.org/html/rfc6694#section-3
  Source Edit

    proc openDefaultBrowser(url: string) {....raises: [IOError], tags: [ExecIOEffect,
        ReadEnvEffect, RootEffect], forbids: [].}

  Opens `url` with the user's default browser. This does not block. The URL must not be empty string, to open on a blank page see `openDefaultBrowser()`.

  Under Windows, `ShellExecute` is used. Under Mac OS X the `open` command is used. Under Unix, it is checked if `xdg-open` exists and used if it does. Otherwise the environment variable `BROWSER` is used to determine the default browser to use.

  This proc doesn't raise an exception on error, beware.

      block: openDefaultBrowser("https://nim-lang.org")

  Source Edit