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1 " PostScript indent file
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2 " Language: PostScript
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3 " Maintainer: Mike Williams <mrw@netcomuk.co.uk>
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4 " Last Change: 2nd July 2001
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5 "
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6
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7 " Only load this indent file when no other was loaded.
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8 if exists("b:did_indent")
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9 finish
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10 endif
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11 let b:did_indent = 1
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12
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13 setlocal indentexpr=PostscrIndentGet(v:lnum)
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14 setlocal indentkeys+=0],0=>>,0=%%,0=end,0=restore,0=grestore indentkeys-=:,0#,e
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15
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16 " Catch multiple instantiations
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17 if exists("*PostscrIndentGet")
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18 finish
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19 endif
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20
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21 function! PostscrIndentGet(lnum)
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22 " Find a non-empty non-comment line above the current line.
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23 " Note: ignores DSC comments as well!
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24 let lnum = a:lnum - 1
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25 while lnum != 0
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26 let lnum = prevnonblank(lnum)
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27 if getline(lnum) !~ '^\s*%.*$'
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28 break
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29 endif
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30 let lnum = lnum - 1
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31 endwhile
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32
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33 " Hit the start of the file, use user indent.
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34 if lnum == 0
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35 return -1
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36 endif
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37
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38 " Start with the indent of the previous line
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39 let ind = indent(lnum)
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40 let pline = getline(lnum)
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41
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42 " Indent for dicts, arrays, and saves with possible trailing comment
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43 if pline =~ '\(begin\|<<\|g\=save\|{\|[\)\s*\(%.*\)\=$'
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44 let ind = ind + &sw
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45 endif
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46
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47 " Remove indent for popped dicts, and restores.
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48 if pline =~ '\(end\|g\=restore\)\s*$'
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49 let ind = ind - &sw
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50
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51 " Else handle immediate dedents of dicts, restores, and arrays.
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52 elseif getline(a:lnum) =~ '\(end\|>>\|g\=restore\|}\|]\)'
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53 let ind = ind - &sw
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54
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55 " Else handle DSC comments - always start of line.
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56 elseif getline(a:lnum) =~ '^\s*%%'
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57 let ind = 0
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58 endif
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59
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60 " For now catch excessive left indents if they occur.
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61 if ind < 0
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62 let ind = -1
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63 endif
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64
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65 return ind
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66 endfunction
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67
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68 " vim:sw=2
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