| 1 | ;------------------------------------------------------------ |
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| 2 | ;------------------------------------------------------------ |
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| 3 | ;------------------------------------------------------------ |
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| 4 | ;+ |
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| 5 | ; @file_comments |
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| 6 | ; write an IDL function, compile it and execute it. |
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| 7 | ; useful to avoid the use of execute |
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| 8 | ; |
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| 9 | ; @param command {in}{required} |
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| 10 | ; a scalar string defining the result to be given back by the function. |
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| 11 | ; (see examples) |
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| 12 | ; |
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| 13 | ; @keyword FILENAMEIN {in} {default=for_createfunc.pro} |
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| 14 | ; name of the function to be created. |
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| 15 | ; |
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| 16 | ; @keyword KWDLIST {in} |
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| 17 | ; a vector string. to specify a list of keywords that must be included in the |
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| 18 | ; function definition. |
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| 19 | ; Warning: the string must start with a ',' |
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| 20 | ; for example: KWDLIST = ', TOTO = toto' |
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| 21 | ; |
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| 22 | ; @keyword _EXTRA |
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| 23 | ; used to pass your keywords to the created function. |
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| 24 | ; |
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| 25 | ; @restrictions |
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| 26 | ; - arguments can be given only through keywords; |
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| 27 | ; - ends the function name with '.pro' if needed. |
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| 28 | ; |
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| 29 | ; @examples |
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| 30 | ; IDL> print, createfunc('3*2', filename='test') |
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| 31 | ; IDL> print, createfunc('3*two', filename = 'test' $ |
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| 32 | ; IDL> , kwdlist ='two = two', two = 2) |
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| 33 | ; |
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| 34 | ; @history Sebastien Masson (smasson\@lodyc.jussieu.fr) |
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| 35 | ; May 2005 |
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| 36 | ; |
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| 37 | ; @version $Id$ |
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| 38 | ; |
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| 39 | ;- |
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| 40 | ;------------------------------------------------------------ |
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| 41 | ;------------------------------------------------------------ |
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| 42 | ;------------------------------------------------------------ |
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| 43 | FUNCTION createfunc, command, FILENAMEIN = filenamein $ |
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| 44 | , KWDLIST = kwdlist, _EXTRA = ex |
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| 45 | ; |
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| 46 | compile_opt idl2, hidden, strictarrsubs |
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| 47 | ; |
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| 48 | IF n_elements(command) NE 1 THEN stop |
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| 49 | ; define filename if needed |
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| 50 | if NOT keyword_set(filenamein) then filename = 'for_createfunc.pro' $ |
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| 51 | ELSE filename = filenamein |
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| 52 | ; get the name of the function (not the name of the file containing the function) |
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| 53 | shortfilename = file_basename(filename, '.pro') |
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| 54 | ; check if the directory exists |
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| 55 | dirname = isadirectory(file_dirname(filename) $ |
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| 56 | , title = 'Redefine '+shortfilename+'.pro directory') |
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| 57 | IF size(dirname, /type) NE 7 THEN return, -1 |
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| 58 | ; |
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| 59 | filename = dirname + shortfilename + '.pro' |
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| 60 | ; create the file |
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| 61 | if NOT keyword_set(kwdlist) then kwdlist = '' |
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| 62 | kwdlist = kwdlist + ', _EXTRA = ex' |
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| 63 | IF strmid(kwdlist, 0, 1) NE ',' THEN kwdlist = ', ' + kwdlist |
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| 64 | putfile, filename, ['function ' + shortfilename + kwdlist $ |
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| 65 | , 'compile_opt idl2, hidden, strictarrsubs' $ |
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| 66 | , 'res = ' + command $ |
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| 67 | , 'return, res' $ |
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| 68 | , 'end'] |
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| 69 | ; go in dirname directory |
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| 70 | cd, dirname, current = old_dir |
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| 71 | ; compile it |
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| 72 | resolve_routine, shortfilename, /is_function |
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| 73 | cd, old_dir |
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| 74 | ; execute it |
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| 75 | res = call_function(shortfilename, _EXTRA = ex) |
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| 76 | ; |
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| 77 | return, res |
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| 78 | end |
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