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Overview
Comment:In the checklist application, add a /self method and make the magic database name "top" refer to the lexically largest database file.
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SHA3-256: 752d433361879f3e229dc41886280ff3254dd05369563b685f21f5799e6c0be1
User & Date: drh 2019-07-27 15:28:01.022
Context
2019-07-27
15:39
Add the CGI-Environment and Source-code submenu links to the checklist application. (check-in: a5c38ef1bf user: drh tags: trunk)
15:28
In the checklist application, add a /self method and make the magic database name "top" refer to the lexically largest database file. (check-in: 752d433361 user: drh tags: trunk)
15:13
Fixes to the checklist CGI so that it works better as a Fossil CGI extension. (check-in: 41933da084 user: drh tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to misc/checklist.tcl.
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# Show the CGI environment for testing purposes.
#
proc wapp-page-env {} {
  sqlite3 db :memory:
  set v [db one {SELECT sqlite_source_id()}]
  checklist-verify-login
  wapp-trim {
     <div class='fossil-doc' data-title='Wapp Environment'>
     <pre>%html([wapp-debug-env])}
  global env
  foreach e [array names env] {
    if {![string match FOSSIL* $e]} continue
    set txt "$e = [list $env($e)]\n"
    wapp-subst {%html($txt)}
  }
  wapp-subst {SQLite = %html($v)</pre>\n</div>\n}
}




















# Check user permissions by looking at the login/password in the
# checklist-login cookie.  Set the following environment variables:
#
#     CKLIST_USER      Name of the user.  Empty string if not logged in
#     CKLIST_WRITE     True if the user is allowed to make updates
#     CKLIST_ADMIN     True if the user is an administrator.








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# Show the CGI environment for testing purposes.
#
proc wapp-page-env {} {
  sqlite3 db :memory:
  set v [db one {SELECT sqlite_source_id()}]
  checklist-verify-login
  wapp-trim {
     <div class='fossil-doc' data-title='Checklist Environment'>
     <pre>%html([wapp-debug-env])}
  global env
  foreach e [array names env] {
    if {![string match FOSSIL* $e]} continue
    set txt "$e = [list $env($e)]\n"
    wapp-subst {%html($txt)}
  }
  wapp-subst {SQLite = %html($v)</pre>\n</div>\n}
}

# Show the complete text of this script.
#
proc wapp-page-self {} {
  wapp-cache-control max-age=3600
  wapp-subst {<div class='fossil-doc' data-title='Checklist Program Listing'>\n}
  set fd [open [wapp-param SCRIPT_FILENAME] rb]
  set script [read $fd]
  close $fd
  wapp-trim {
    <p>The following is the complete text of the 
    <a href='https://wapp.tcl.tk/'>Wapp script</a> that implements this
    <a href='https://fossil-scm.org/home/doc/trunk/www/serverext.wiki'>Fossil
    CGI extension</a>:</p>
    <pre>%html($script)</pre>
  }
  wapp-subst {</div>\n}
}


# Check user permissions by looking at the login/password in the
# checklist-login cookie.  Set the following environment variables:
#
#     CKLIST_USER      Name of the user.  Empty string if not logged in
#     CKLIST_WRITE     True if the user is allowed to make updates
#     CKLIST_ADMIN     True if the user is an administrator.
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#
# If the first element of PATH_INFO is not a valid checklist database name,
# then change PATH_HEAD to be the database listing method.
#
proc wapp-before-dispatch-hook {} {
  global DATADIR
  set dbname [wapp-param PATH_HEAD]





  wapp-set-param ROOT_URL [wapp-param BASE_URL]
  if {[file readable $DATADIR/$dbname.db]} {
    # an appropriate database has been found
    wapp-set-param OBJECT $DATADIR/$dbname.db
    if {[regexp {^([^/]+)(.*)$} [wapp-param PATH_TAIL] all head tail]} {
      wapp-set-param PATH_HEAD $head
      wapp-set-param PATH_TAIL [string trimleft $tail /]
      wapp-set-param SELF_URL /$head
    } else {
      wapp-set-param PATH_HEAD {}
      wapp-set-param PATH_TAIL {}
    }
    wapp-set-param BASE [wapp-param BASE_URL]/$dbname
  } else {
    # Not a valid database.  Change the method to list all available
    # databases.
    wapp-set-param OBJECT {}
    wapp-set-param BASE [wapp-param SCRIPT_NAME]

    if {$dbname!="env"} {wapp-set-param PATH_HEAD listing}

  }
}

# Start up the web-server
wapp-start $::argv








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#
# If the first element of PATH_INFO is not a valid checklist database name,
# then change PATH_HEAD to be the database listing method.
#
proc wapp-before-dispatch-hook {} {
  global DATADIR
  set dbname [wapp-param PATH_HEAD]
  if {$dbname=="top"} {
    set filelist [glob -tails -directory $DATADIR 3*.db]
    set dbname [lindex [lsort -decr $filelist] 0]
    regsub {.db$} $dbname {} dbname
  }
  wapp-set-param ROOT_URL [wapp-param BASE_URL]
  if {[file readable $DATADIR/$dbname.db]} {
    # an appropriate database has been found
    wapp-set-param OBJECT $DATADIR/$dbname.db
    if {[regexp {^([^/]+)(.*)$} [wapp-param PATH_TAIL] all head tail]} {
      wapp-set-param PATH_HEAD $head
      wapp-set-param PATH_TAIL [string trimleft $tail /]
      wapp-set-param SELF_URL /$head
    } else {
      wapp-set-param PATH_HEAD {}
      wapp-set-param PATH_TAIL {}
    }
    wapp-set-param BASE [wapp-param BASE_URL]/$dbname
  } else {
    # Not a valid database.  Change the method to list all available
    # databases.
    wapp-set-param OBJECT {}
    wapp-set-param BASE [wapp-param SCRIPT_NAME]
    if {$dbname!="env" && $dbname!="self"} {
      wapp-set-param PATH_HEAD listing
    }
  }
}

# Start up the web-server
wapp-start $::argv