[2] | 1 | ; |
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| 2 | ;+ |
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| 3 | ; NAME: |
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| 4 | ; TEXTOIDL |
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| 5 | ; PURPOSE: |
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| 6 | ; Convert a valid TeX string to a valid IDL string for plot labels. |
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| 7 | ; CATEGORY: |
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| 8 | ; text/strings |
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| 9 | ; CALLING SEQUENCE: |
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| 10 | ; new = textoidl(old) |
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| 11 | ; INPUTS: |
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| 12 | ; old -- TeX string to be converted. Will not be in |
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| 13 | ; modified. old may be a string array. |
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| 14 | ; KEYWORD PARAMETERS: |
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| 15 | ; FONT -- Set to 0 to use hardware font, -1 to use |
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| 16 | ; vector. Note that the only hardware font |
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| 17 | ; supported is PostScript. |
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| 18 | ; /TEX_SEQUENCES -- return the available TeX sequences |
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| 19 | ; /HELP -- print out info on use of the function |
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| 20 | ; and exit. |
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| 21 | ; OUTPUTS: |
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| 22 | ; new -- IDL string corresponding to old. out |
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| 23 | ; COMMON BLOCKS: |
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| 24 | ; SIDE EFFECTS: |
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| 25 | ; NOTES: |
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| 26 | ; - Use the procedure SHOWTEX to get a list of the available TeX |
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| 27 | ; control sequences. |
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| 28 | ; - The only hardware font for which translation is available is |
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| 29 | ; PostScript. |
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| 30 | ; - The only device for which hardware font' |
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| 31 | ; translation is available is PostScript.' |
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| 32 | ; - The FONT keyword overrides the font selected' |
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| 33 | ; by !p.font' |
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| 34 | ; EXAMPLE: |
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| 35 | ; out = TeXtoIDL('\Gamma^2 + 5N_{ed}') |
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| 36 | ; The string out may be used in XYOUTS or other IDL text |
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| 37 | ; display routines. It will be an uppercase Gamma, with an |
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| 38 | ; exponent of 2, then a plus sign, then an N with the subscript |
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| 39 | ; ed. |
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| 40 | ; MODIFICATION HISTORY: |
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| 41 | ; $Id$ |
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| 42 | ; $Log$ |
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| 43 | ; Revision 1.1 2002/09/11 10:17:16 opalod |
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| 44 | ; Initial revision |
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| 45 | ; |
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| 46 | ; Revision 1.4 1996/06/14 20:00:27 mcraig |
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| 47 | ; Updated Copyright info. |
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| 48 | ; |
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| 49 | ; Revision 1.3 1996/05/09 00:22:17 mcraig |
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| 50 | ; Added error handling, cleaned up documentation. |
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| 51 | ; |
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| 52 | ; Revision 1.2 1996/02/08 18:52:50 mcraig |
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| 53 | ; Added ability to use hardware fonts for PostScript device. |
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| 54 | ; |
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| 55 | ; Revision 1.1 1996/01/31 18:47:37 mcraig |
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| 56 | ; Initial revision |
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| 57 | ; |
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| 58 | ; RELEASE: |
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| 59 | ; $Name$ |
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| 60 | ; |
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| 61 | ; COPYRIGHT: |
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| 62 | ; Copyright (C) 1996 The Regents of the University of California, All |
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| 63 | ; Rights Reserved. Written by Matthew W. Craig. |
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| 64 | ; See the file COPYRIGHT for restrictions on distrubting this code. |
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| 65 | ; This code comes with absolutely NO warranty; see DISCLAIMER for details. |
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| 66 | ;- |
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| 67 | ; |
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| 68 | FUNCTION Textoidl, InputString, $ |
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| 69 | FONT=fnt, $ |
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| 70 | HELP=hlp, $ |
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| 71 | TEX_SEQUENCES=tex_seq |
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| 72 | |
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| 73 | ; Return to caller if there is an error. |
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| 74 | On_error, 2 |
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| 75 | ; We begin by deciding on the font. PostScript = 0 means use vector. |
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| 76 | PostScript = 0 |
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| 77 | IF n_elements(fnt) EQ 0 THEN BEGIN ; get font from !p.font |
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| 78 | IF !p.font NE -1 THEN BEGIN ; User wants hardware font. |
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| 79 | PostScript=1 |
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| 80 | ENDIF |
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| 81 | ENDIF ELSE BEGIN ; get font from FONT keyword |
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| 82 | IF fnt NE -1 THEN PostScript = 1 |
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| 83 | ENDELSE |
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| 84 | |
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| 85 | ; Bomb out if user wants non-PostScript hardware font. |
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| 86 | IF (PostScript EQ 1) AND (!d.name NE 'PS') THEN BEGIN |
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| 87 | ; Device isn't postscript |
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| 88 | ; and user wants hardware |
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| 89 | ; font. Not good. |
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| 90 | print,'Warning: No translation for device: ',!d.name |
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| 91 | return,InputString |
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| 92 | ENDIF |
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| 93 | |
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| 94 | IF keyword_set (tex_seq) THEN BEGIN |
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| 95 | table=textable() |
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| 96 | return,table(0,*) |
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| 97 | ENDIF |
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| 98 | |
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| 99 | IF keyword_set(hlp) OR (n_params() EQ 0) THEN BEGIN |
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| 100 | print, ' Convert a TeX string to an IDL string' |
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| 101 | print, ' new = TeXtoIDL(old)' |
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| 102 | print, ' old = TeX string to translate. in' |
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| 103 | print, ' new = resulting IDL string. out' |
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| 104 | print, ' Keywords:' |
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| 105 | print, ' FONT set to -1 to translate for vector fonts ' |
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| 106 | print, ' (DEFAULT) . Set to 0 to translate for' |
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| 107 | print, ' hardware font.' |
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| 108 | print, ' /TEX_SEQUENCES -- return the available TeX sequences' |
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| 109 | print, ' /HELP print this message and exit.' |
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| 110 | print, ' NOTES: ' |
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| 111 | print, ' - Use SHOWTEX to obtain a list of the available' |
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| 112 | print, ' TeX control sequences.' |
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| 113 | print, ' - old may be a string array. If so, new is too.' |
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| 114 | print, ' - The only device for which hardware font' |
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| 115 | print, ' translation is available is PostScript.' |
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| 116 | print, ' - The FONT keyword overrides the font selected' |
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| 117 | print, ' by !p.font' |
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| 118 | return, -1 |
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| 119 | ENDIF |
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| 120 | |
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| 121 | ; PostScript has been set to 1 if PostScript fonts are desired. |
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| 122 | strn = InputString |
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| 123 | table = textable(POSTSCRIPT=PostScript) |
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| 124 | |
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| 125 | ; Greek sub/superscripts need to be protected by putting braces |
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| 126 | ; around them if they are unbraced. This will have the result the |
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| 127 | ; it will be difficult to use \ as a sub/superscript. Get over it. |
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| 128 | strn = strtrans(strn, '^'+table(0, *), '^{'+table(0, *)+'}') |
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| 129 | strn = strtrans(strn, '_'+table(0, *), '_{'+table(0, *)+'}') |
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| 130 | |
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| 131 | ; First we translate Greek letters and the like. This makes guessing |
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| 132 | ; alignment of sub/superscripts easier, as all special characters will then |
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| 133 | ; be one character long. |
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| 134 | strn = strtrans(strn, table(0, *), table(1, *)) |
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| 135 | |
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| 136 | FOR i = 0L, n_elements(strn)-1 DO $ |
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| 137 | strn(i) = translate_sub_super(strn(i)) ; Take care of sub/superscripts |
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| 138 | |
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| 139 | return,strn |
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| 140 | END |
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