1 | ;------------------------------------------------------------- |
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2 | ;+ |
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3 | ; NAME: |
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4 | ; GETFILE |
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5 | ; PURPOSE: |
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6 | ; Read a text file into a string array. |
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7 | ; CATEGORY: |
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8 | ; CALLING SEQUENCE: |
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9 | ; s = getfile(f) |
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10 | ; INPUTS: |
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11 | ; f = text file name. in |
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12 | ; KEYWORD PARAMETERS: |
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13 | ; Keywords: |
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14 | ; ERROR=err error flag: 0=ok, 1=file not opened, |
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15 | ; 2=no lines in file. |
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16 | ; /QUIET means give no error message. |
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17 | ; LINES=n Number of lines to read (def=all). |
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18 | ; Much faster if number of lines is known. |
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19 | ; Automatic for IDL 5.6 or later. |
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20 | ; /FIND search te file in the all !path directories (use |
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21 | ; find.pro) |
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22 | ; OUTPUTS: |
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23 | ; s = string array. out |
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24 | ; COMMON BLOCKS: |
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25 | ; NOTES: |
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26 | ; MODIFICATION HISTORY: |
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27 | ; R. Sterner, 20 Mar, 1990 |
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28 | ; R. Sterner, 1999 Apr 14 --- Added LINES=n keyword. |
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29 | ; R. Sterner, 2003 Aug 29 --- Automatic lines if IDL 5.6+. |
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30 | ; R. Sterner, 2003 Sep 02 --- Check if file exists first. |
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31 | ; R. Sterner, 2003 Sep 04 --- Fixed error in number of lines in file. |
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32 | ; R. Sterner, 2003 Oct 10 --- Fixed error when no lines. |
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33 | ; R. Sterner, 2004 Jan 27 --- Fixed to work in IDL as old as vers 4. |
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34 | ; |
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35 | ; S. Masson (smasson@lodyc.jussieu.fr) 4 Feb 2002 |
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36 | ; search te file in the all !path directories (use find.pro) |
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37 | ; when using /find keyword. Use spawn, 'cat...' for unix os. |
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38 | ; |
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39 | ; Copyright (C) 1990, Johns Hopkins University/Applied Physics Laboratory |
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40 | ; This software may be used, copied, or redistributed as long as it is not |
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41 | ; sold and this copyright notice is reproduced on each copy made. This |
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42 | ; routine is provided as is without any express or implied warranties |
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43 | ; whatsoever. Other limitations apply as described in the file disclaimer.txt. |
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44 | ;- |
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45 | ;------------------------------------------------------------- |
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46 | |
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47 | function getfile, filein, error=err, help=hlp, quiet=quiet, lines=lines, find = find |
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48 | ; |
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49 | compile_opt idl2, strictarrsubs |
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50 | ; |
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51 | |
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52 | if (n_params(0) lt 1) or keyword_set(hlp) then begin |
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53 | print,' Read a text file into a string array.' |
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54 | print,' s = getfile(f)' |
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55 | print,' f = text file name. in' |
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56 | print,' s = string array. out' |
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57 | print,' Keywords:' |
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58 | print,' ERROR=err error flag: 0=ok, 1=file not opened,' |
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59 | print,' 2=no lines in file.' |
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60 | print,' /QUIET means give no error message.' |
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61 | print,' LINES=n Number of lines to read (def=all).' |
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62 | print,' Much faster if number of lines is known.' |
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63 | print,' Automatic for IDL 5.6 or later.' |
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64 | return, -1 |
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65 | endif |
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66 | ; |
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67 | if keyword_set(find) then begin |
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68 | file = find(filein) |
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69 | file = file[0] |
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70 | if file EQ 'NOT FOUND' then begin |
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71 | print, ' Error in getfile: File '+filein+' not fouond.' |
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72 | return, -1 |
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73 | endif |
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74 | ENDIF ELSE file = filein |
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75 | if !version.os_family EQ 'unix' then begin |
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76 | spawn, 'cat '+file, res |
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77 | if res[0] NE '' then return, res ELSE return, '' |
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78 | endif |
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79 | |
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80 | if (!version.release+0. ge 5.5) then begin |
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81 | f = call_function('file_search', file, count = c) |
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82 | endif else begin |
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83 | f = findfile(file,count=c) |
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84 | endelse |
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85 | if c eq 0 then begin |
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86 | err = 1 |
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87 | return,'' |
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88 | endif |
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89 | |
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90 | if n_elements(line) eq 0 and (!version.release+0. ge 5.6) then begin |
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91 | lines = file_lines(file) |
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92 | if lines eq 0 then begin |
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93 | if not keyword_set(quiet) then print,' No lines in file.' |
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94 | err = 2 |
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95 | return,-1 |
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96 | endif |
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97 | minlines = 0 |
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98 | endif else minlines=1 |
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99 | |
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100 | get_lun, lun |
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101 | on_ioerror, err |
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102 | openr, lun, file |
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103 | |
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104 | if n_elements(lines) ne 0 then begin |
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105 | s = strarr(lines) |
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106 | readf,lun,s |
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107 | endif else begin |
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108 | s = [' '] |
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109 | t = '' |
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110 | while not eof(lun) do begin |
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111 | readf, lun, t |
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112 | s = [s,t] |
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113 | endwhile |
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114 | endelse |
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115 | |
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116 | close, lun |
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117 | free_lun, lun |
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118 | if n_elements(s) eq minlines then begin |
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119 | if not keyword_set(quiet) then print,' No lines in file.' |
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120 | err = 2 |
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121 | return,-1 |
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122 | endif |
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123 | if minlines eq 1 then s=s[1:*] |
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124 | |
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125 | err = 0 |
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126 | return, s |
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127 | |
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128 | err: if !err eq -168 then begin |
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129 | if not keyword_set(quiet) then print,' Non-standard text file format.' |
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130 | free_lun, lun |
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131 | return, s |
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132 | endif |
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133 | if not keyword_set(quiet) then print,$ |
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134 | ' Error in getfile: File '+file+' not opened.' |
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135 | free_lun, lun |
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136 | err = 1 |
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137 | return, -1 |
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138 | |
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139 | end |
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