Hi Carl and others, below the asterisks line follows the script
*********************************************************************************************
rebol [
Title: "Flag Viewer"
Author: "Arie van Wingerden"
]
{write/lines %log mold country-flag}
global: make object! [
;**********************************************************************
; The URL of the webpage holding the names of the different countries
; for which a flag is present.
;**********************************************************************
allflags:
http://www.cia.gov/cia/publications/factbook/docs/flagsoftheworld.html
;**********************************************************************
; The URL of the webpage holding an enlarged flag of a certain country.
; Each country has a specific prefix code, like xx.
; The image of the flag is URL/xx-lgflag.gif.
; The flad description can be found in URL/xx-flag.html
;**********************************************************************
flagpage: http://www.cia.gov/cia/publications/factbook/flags/
;**********************************************************************
; This field will contain (after get-flags has been called) :
; - the countryname
; - the 2 character countrycode
;**********************************************************************
flags: copy ""
;**********************************************************************
; This field will be used as a pointer to the current flag
; and will be initialized to 1
;**********************************************************************
curflag: 1
;**********************************************************************
; This field remembers the last find string in order to be able to
; carry on searching with the same string
;**********************************************************************
findstr: copy ""
;**********************************************************************
; This field remembers the pointer to the country last found
;**********************************************************************
findptr: 1
]
get-flags: func [
{Fetch countrynames and codes of all flags needed}
/local countrycode countryname flaglist flags found
][
flags: copy []
parse read global/allflags [
thru "<option selected>Select a Country</option>"
copy flaglist
to "</select>"
to end
]
forever [
found:
parse flaglist [
thru "geos/"
copy countrycode
to "."
thru ">"
copy countryname
to "<"
copy flaglist
to end
]
if not found [ break ]
either find [ "ay" "gz" "oo" "pf" "pg" "we" "xo" "xq" "xx" "zh"
"zn" ] countrycode [
{Due to error on website this code points to nowhere
so we ignore this entry for the time being}
][
append flags reduce [ countryname countrycode ]
]
]
;**********************************************************************
; Sort the list by countryname
;**********************************************************************
sort/skip flags 2
;**********************************************************************
; Return the list of countrycodes and names implicitly
;**********************************************************************
flags
]
show-flags: func [
{Main program: show and search for flags}
][
view layout [
country-name: label current-country/name 600 black bold
font-name font-sans-serif font-size 14
country-flag: image fetch-url
across
country-find: field 400
find-button: button "Find (next)" [
print "------------------------------------"
print "Right after push Find (next) button:"
print rejoin [ " global/findstr=(" global/findstr ")" ]
print rejoin [ " country-find/text=(" country-find/text ")" ]
either find-country country-find/text [
country-name/text: current-country/name
country-flag/image: load fetch-url
show country-name
show country-flag
msg-info/text: copy ""
][
msg-info/text: "Country could not be found!"
]
show msg-info
show country-find
]
next-button: button "Next Country" [
next-country
country-name/text: current-country/name
country-flag/image: load fetch-url
country-find/text: copy ""
msg-info/text: copy ""
show country-name
show country-flag
show country-find
show msg-info
]
return
msg-info: info copy "" 600 yellow
]
]
fetch-url: func [
{Construct the URL of the image}
][
return rejoin [ global/flagpage current-country/code "-lgflag.gif" ]
]
current-country: func [
{returns either the countryname or the countrycode}
/code /name
][
if code [
return pick global/flags (global/curflag + 1)
]
if name [
return pick global/flags global/curflag
]
]
find-country: func [
{Tries to find the country that the user suggests - a part of the
name is OK}
search-text /count /ptr /tmpflags
][
if search-text = "" [
return false
]
either global/findstr <> search-text [
ptr: 1
][
ptr: global/findptr + 2
]
if ptr > length? global/flags [
return false
]
tmpflags: skip global/flags (ptr - 1)
count: ptr
foreach [ country code ] tmpflags [
if find country search-text [
global/curflag: count
global/findptr: count
global/findstr: search-text
print "Right after a hit in find-country:"
print rejoin [ " global/findstr=(" global/findstr ")" ]
print rejoin [ " country-find/text=(" country-find/text ")" ]
return true
]
count: count + 2
]
return false
]
next-country: func [
{adds 1 to country counter; if at tail, than revert to the first
country}
][
global/curflag: global/curflag + 2
if tail? skip global/flags global/curflag [
global/curflag: 1
]
]
;***********************************************************************;;;
; Main line starts here
;***********************************************************************;;;
global/flags: get-flags
show-flags
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