Parse LaTeX lines
parse_tex(tex_lines)
| tex_lines | Character vector (as read from a |
|---|
A data.table where each row identifies a unique character in tex_lines.
line_noMatches the index of tex_lines.
char_noThe character within line_no.
charThe character. A single character.
tex_groupThe TeX group by default. Any delimiters can be used.
optional_tex_group(If any present), the optional TeX group.
tgiThe number of braces opened at the i-th current TeX group level.
GROUP_IDiAn integer identifying the unique contiguous block at the TeX group at or above the current group level.
GROUP_IDiThe analog for optional groups.
If tex_lines is zero-length, a null data.table.
parse_tex(c("A{}", "B[a]{b{c}{d}}z"))#> char_no line_no column char openers closers opener_optional closer_optional #> 1: 1 1 1 A FALSE FALSE FALSE FALSE #> 2: 2 1 2 { TRUE FALSE FALSE FALSE #> 3: 3 1 3 } FALSE TRUE FALSE FALSE #> 4: 4 2 1 B FALSE FALSE FALSE FALSE #> 5: 5 2 2 [ FALSE FALSE TRUE FALSE #> 6: 6 2 3 a FALSE FALSE FALSE FALSE #> 7: 7 2 4 ] FALSE FALSE FALSE TRUE #> 8: 8 2 5 { TRUE FALSE FALSE FALSE #> 9: 9 2 6 b FALSE FALSE FALSE FALSE #> 10: 10 2 7 { TRUE FALSE FALSE FALSE #> 11: 11 2 8 c FALSE FALSE FALSE FALSE #> 12: 12 2 9 } FALSE TRUE FALSE FALSE #> 13: 13 2 10 { TRUE FALSE FALSE FALSE #> 14: 14 2 11 d FALSE FALSE FALSE FALSE #> 15: 15 2 12 } FALSE TRUE FALSE FALSE #> 16: 16 2 13 } FALSE TRUE FALSE FALSE #> 17: 17 2 14 z FALSE FALSE FALSE FALSE #> tex_group optional_tex_group tg1 GROUP_ID1 tg2 GROUP_ID2 og1 OPT_GROUP_ID1 #> 1: 0 0 0 NA 0 NA 0 NA #> 2: 1 0 1 1 0 NA 0 NA #> 3: 1 0 1 1 0 NA 0 NA #> 4: 0 0 1 NA 0 NA 0 NA #> 5: 0 1 1 NA 0 NA 1 1 #> 6: 0 1 1 NA 0 NA 1 1 #> 7: 0 1 1 NA 0 NA 1 1 #> 8: 1 0 2 2 0 NA 1 NA #> 9: 1 0 2 2 0 NA 1 NA #> 10: 2 0 NA 2 1 1 1 NA #> 11: 2 0 NA 2 1 1 1 NA #> 12: 2 0 NA 2 1 1 1 NA #> 13: 2 0 NA 2 2 2 1 NA #> 14: 2 0 NA 2 2 2 1 NA #> 15: 2 0 NA 2 2 2 1 NA #> 16: 1 0 2 2 2 NA 1 NA #> 17: 0 0 2 NA 2 NA 1 NA# The version transposed: # #> char : A{}B[a]{b{c}{d}}z #> tg1 : 011111122......22 #> tg2 : 00000000011122222 #> og1 : 00001111111111111 #> GROUP_ID1 : .11....222222222. #> GROUP_ID2 : .........111222.. #> OPT_GROUP_ID1 : ....111..........