[2] | 1 | ;------------------------------------------------------------- |
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| 2 | ;+ |
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| 3 | ; |
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[142] | 4 | ; @file_comments |
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| 5 | ; return right subportion from a string |
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[2] | 6 | ; |
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[142] | 7 | ; @categories |
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[157] | 8 | ; String |
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[142] | 9 | ; |
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| 10 | ; @param S {in}{required} |
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| 11 | ; the string to be searched |
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[2] | 12 | ; |
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[163] | 13 | ; @param LASTN {in}{required}{default=1} |
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| 14 | ; the number of characters to be returned. |
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| 15 | ; If NLAST is the strlen(STRING), the complete string |
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[142] | 16 | ; is returned. |
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[2] | 17 | ; |
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[142] | 18 | ; @returns |
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| 19 | ; The portion of LASTN characters of S counted from the back. |
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[2] | 20 | ; |
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[142] | 21 | ; @examples |
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| 22 | ; if (strright(path) ne '/') then path = path + '/' |
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[2] | 23 | ; |
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[142] | 24 | ; @history |
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| 25 | ; mgs, 19 Nov 1997: VERSION 1.00 |
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[2] | 26 | ; |
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[142] | 27 | ; @version |
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| 28 | ; $Id$ |
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[2] | 29 | ; |
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| 30 | ;- |
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| 31 | ; Copyright (C) 1997, Martin Schultz, Harvard University |
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| 32 | ; This software is provided as is without any warranty |
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| 33 | ; whatsoever. It may be freely used, copied or distributed |
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| 34 | ; for non-commercial purposes. This copyright notice must be |
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| 35 | ; kept with any copy of this software. If this software shall |
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| 36 | ; be used commercially or sold as part of a larger package, |
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| 37 | ; please contact the author to arrange payment. |
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| 38 | ; Bugs and comments should be directed to mgs@io.harvard.edu |
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| 39 | ; with subject "IDL routine strright" |
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| 40 | ;------------------------------------------------------------- |
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| 41 | |
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| 42 | |
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| 43 | function strright,s,lastn |
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[114] | 44 | ; |
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| 45 | compile_opt idl2, strictarrsubs |
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| 46 | ; |
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[2] | 47 | |
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| 48 | on_error,2 ; return to caller |
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| 49 | |
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| 50 | if (n_elements(s) le 0) then return,-1L |
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| 51 | |
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| 52 | l = strlen(s) |
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| 53 | |
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| 54 | if (n_elements(lastn) le 0) then lastn = 1 |
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| 55 | if lastn gt l then lastn = l |
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| 56 | |
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| 57 | result = strmid(s,l-lastn,l) |
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| 58 | |
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| 59 | return,result |
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| 60 | end |
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