1 | ;+ |
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2 | ; |
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3 | ; @file_comments |
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4 | ; Display an IDL procedure header using widgets and the widget manager. |
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5 | ; |
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6 | ; @categories |
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7 | ; Widget |
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8 | ; |
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9 | ; @param FILENAME {in}{required} |
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10 | ; A scalar string that contains the filename of the file to display. |
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11 | ; If FILENAME does not include a complete path specification, xhelp will |
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12 | ; search for the file in the current working directory and then each of the |
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13 | ; directories listed in !PATH environment variable. The |
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14 | ; ".pro" file suffix will be appended if it is not supplied. |
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15 | ; |
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16 | ; @keyword _EXTRA |
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17 | ; used to pass your keywords |
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18 | ; |
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19 | ; @restrictions |
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20 | ; Triggers the XMANAGER if it is not already in use. |
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21 | ; |
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22 | ; @examples |
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23 | ; Open a file and create a widget to display its contents. |
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24 | ; |
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25 | ; @history Written By Steve Richards, December 1990 |
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26 | ; Graceful error recovery, DMS, Feb, 1992. |
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27 | ; Modified to extract .pro documentation headers, PJR/ESRG mar94 |
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28 | ; Paul Ricchiazzi jun93 |
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29 | ; Institute for Computational Earth System Science |
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30 | ; University of California, Santa Barbara |
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31 | ; 7/1/99 : legeres mofification par Sebastien Masson : utilisation de |
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32 | ; xdisplayfile, de findfile et de _extra. |
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33 | ; 6/7/1999: compatibility mac and windows |
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34 | ; |
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35 | ; @version $Id$ |
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36 | ; |
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37 | ;- |
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38 | PRO xhelp, filename, _extra=ex |
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39 | ; |
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40 | compile_opt idl2, strictarrsubs |
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41 | ; |
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42 | |
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43 | ; Are we sure filename is a string? |
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44 | cquoidonc = size(filename, /type) |
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45 | if cquoidonc NE 7 then begin |
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46 | ras = report('Input parameter must be a string and not a '+size(filename, /tname)) |
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47 | return |
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48 | endif |
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49 | ; We have to find the full name |
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50 | pfile=FILENAME |
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51 | if strpos(pfile,".pro") lt 0 then pfile=pfile+".pro" |
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52 | thisOS = strupcase(strmid(!version.os_family, 0, 3)) |
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53 | CASE thisOS of |
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54 | 'MAC':BEGIN & sep = ':' & pathsep = ',' & end |
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55 | 'WIN':BEGIN & sep = '\' & pathsep = ';' & end |
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56 | ELSE: BEGIN & sep = '/' & pathsep = ':' & end |
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57 | ENDCASE |
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58 | cd, current = current |
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59 | if strpos(pfile,sep) lt 0 then BEGIN |
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60 | if rstrpos(current,sep) NE strlen(current)-1 then current = current+sep |
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61 | multipath = str_sep(!path,pathsep) |
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62 | if rstrpos(multipath[0],sep) NE strlen(multipath[0])-1 then multipath = multipath +sep |
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63 | pfile = [current, multipath]+ pfile |
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64 | ENDIF |
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65 | ; We test each possible name to find where the file is. |
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66 | nfile=n_elements(pfile) |
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67 | n = 0 |
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68 | repeat begin |
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69 | res = findfile(pfile[n]) |
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70 | n = n+1 |
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71 | endrep until res[0] NE '' OR n EQ n_elements(pfile) |
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72 | if res[0] NE '' then BEGIN |
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73 | openr, unit,pfile[n-1], /get_lun ; opening of the file |
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74 | ; we select the heading piece |
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75 | a = strarr(1000) ;Maximum # of lines |
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76 | xsize=0 |
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77 | i = 0 |
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78 | c = '' |
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79 | readon=0 |
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80 | while not eof(unit) do begin |
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81 | readf,unit,c |
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82 | if strpos(c,';-') eq 0 then readon=0 |
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83 | if readon then BEGIN |
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84 | dum=where(byte(c) eq 9b,ntab) ; count tab characters |
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85 | xsize=xsize > (strlen(c)+8*ntab) |
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86 | a[i] = strmid(c,1,200) |
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87 | i = i + 1 |
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88 | endif |
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89 | if strpos(c,';+') eq 0 then readon=1 |
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90 | endwhile |
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91 | if i EQ 0 then $ |
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92 | ras = report('le programme a etait mal ecrit, il n''y a pas d''en-tete... utiliser xfile.pro.') ELSE BEGIN |
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93 | a = a[0:i-1] |
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94 | ; we wrote the a's content in a widget |
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95 | xdisplayfile,'toto',text = a,title=pfile[n-1], _extra = ex |
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96 | ENDELSE |
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97 | FREE_LUN, unit ;free the file unit. |
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98 | ENDIF ELSE ras = report('le fichier demande n''existe pas...') |
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99 | |
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100 | return |
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101 | end |
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102 | |
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