| 1 | ; $Id$ |
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| 2 | ;------------------------------------------------------------- |
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| 3 | ;+ |
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| 4 | ; NAME: |
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| 5 | ; STRRIGHT |
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| 6 | ; |
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| 7 | ; PURPOSE: |
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| 8 | ; return right subportion from a string |
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| 9 | ; |
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| 10 | ; CATEGORY: |
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| 11 | ; string handling |
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| 12 | ; |
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| 13 | ; CALLING SEQUENCE: |
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| 14 | ; res = STRRIGHT(string [,nlast]) |
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| 15 | ; |
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| 16 | ; INPUTS: |
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| 17 | ; STRING --> the string to be searched |
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| 18 | ; |
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| 19 | ; NLAST --> the number of characters to be returned. Default |
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| 20 | ; is 1. If NLAST is ge strlen(STRING), the complete string |
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| 21 | ; is returned. |
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| 22 | ; |
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| 23 | ; KEYWORD PARAMETERS: |
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| 24 | ; |
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| 25 | ; OUTPUTS: |
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| 26 | ; The portion of NLAST characters of STRING counted from the back. |
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| 27 | ; |
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| 28 | ; SUBROUTINES: |
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| 29 | ; |
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| 30 | ; REQUIREMENTS: |
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| 31 | ; |
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| 32 | ; NOTES: |
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| 33 | ; |
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| 34 | ; EXAMPLE: |
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| 35 | ; if (strright(path) ne '/') then path = path + '/' |
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| 36 | ; |
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| 37 | ; MODIFICATION HISTORY: |
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| 38 | ; mgs, 19 Nov 1997: VERSION 1.00 |
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| 39 | ; |
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| 40 | ;- |
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| 41 | ; Copyright (C) 1997, Martin Schultz, Harvard University |
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| 42 | ; This software is provided as is without any warranty |
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| 43 | ; whatsoever. It may be freely used, copied or distributed |
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| 44 | ; for non-commercial purposes. This copyright notice must be |
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| 45 | ; kept with any copy of this software. If this software shall |
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| 46 | ; be used commercially or sold as part of a larger package, |
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| 47 | ; please contact the author to arrange payment. |
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| 48 | ; Bugs and comments should be directed to mgs@io.harvard.edu |
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| 49 | ; with subject "IDL routine strright" |
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| 50 | ;------------------------------------------------------------- |
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| 51 | |
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| 52 | |
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| 53 | function strright,s,lastn |
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| 54 | |
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| 55 | on_error,2 ; return to caller |
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| 56 | |
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| 57 | if (n_elements(s) le 0) then return,-1L |
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| 58 | |
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| 59 | l = strlen(s) |
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| 60 | |
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| 61 | if (n_elements(lastn) le 0) then lastn = 1 |
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| 62 | if lastn gt l then lastn = l |
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| 63 | |
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| 64 | result = strmid(s,l-lastn,l) |
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| 65 | |
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| 66 | return,result |
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| 67 | end |
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