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7
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1 " PostScript indent file
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25880
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2 " Language: PostScript
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28933
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3 " Maintainer: Mike Williams <mrw@eandem.co.uk>
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28379
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4 " Last Change: 2022 Apr 06
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5
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7
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6 " Only load this indent file when no other was loaded.
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7 if exists("b:did_indent")
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8 finish
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9 endif
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10 let b:did_indent = 1
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11
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12 setlocal indentexpr=PostscrIndentGet(v:lnum)
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13 setlocal indentkeys+=0],0=>>,0=%%,0=end,0=restore,0=grestore indentkeys-=:,0#,e
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14
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28379
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15 let b:undo_indent = "setl inde< indk<"
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16
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7
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17 " Catch multiple instantiations
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18 if exists("*PostscrIndentGet")
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19 finish
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20 endif
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21
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22 function! PostscrIndentGet(lnum)
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23 " Find a non-empty non-comment line above the current line.
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24 " Note: ignores DSC comments as well!
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25 let lnum = a:lnum - 1
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26 while lnum != 0
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27 let lnum = prevnonblank(lnum)
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28 if getline(lnum) !~ '^\s*%.*$'
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29 break
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30 endif
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31 let lnum = lnum - 1
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32 endwhile
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33
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34 " Hit the start of the file, use user indent.
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35 if lnum == 0
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36 return -1
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37 endif
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38
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39 " Start with the indent of the previous line
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40 let ind = indent(lnum)
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41 let pline = getline(lnum)
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42
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43 " Indent for dicts, arrays, and saves with possible trailing comment
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44 if pline =~ '\(begin\|<<\|g\=save\|{\|[\)\s*\(%.*\)\=$'
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11518
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45 let ind = ind + shiftwidth()
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7
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46 endif
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47
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48 " Remove indent for popped dicts, and restores.
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49 if pline =~ '\(end\|g\=restore\)\s*$'
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11518
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50 let ind = ind - shiftwidth()
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7
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51
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52 " Else handle immediate dedents of dicts, restores, and arrays.
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53 elseif getline(a:lnum) =~ '\(end\|>>\|g\=restore\|}\|]\)'
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11518
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54 let ind = ind - shiftwidth()
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7
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55
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56 " Else handle DSC comments - always start of line.
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57 elseif getline(a:lnum) =~ '^\s*%%'
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58 let ind = 0
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59 endif
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60
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61 " For now catch excessive left indents if they occur.
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62 if ind < 0
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63 let ind = -1
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64 endif
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65
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66 return ind
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67 endfunction
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68
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69 " vim:sw=2
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