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* Implement the first steps of equation parsing from within libmdoc.Kristaps Dzonsons2011-07-251-4/+7
| | | | | | This consists of a shim around the text parser that calls out to libroff if equation components exist on the line. Right now this will do nothing, as the equation delimiter always returns nil.
* Note GNU extensions in eqn.7. Also add `col' and `pile', which areKristaps Dzonsons2011-07-231-0/+2
| | | | | mentioned briefly in the eqn User's Manual, but otherwise are unspecified.
* Add support for tdefine and ndefine. Consolidate some error messages. AddKristaps Dzonsons2011-07-231-23/+54
| | | | somem more version notes (getting there). Have the equation nanme be captured.
* Raise a warning when text follows the `EN'.Kristaps Dzonsons2011-07-231-1/+7
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* Add `fat' font. This pretty much brings us in line with the secondKristaps Dzonsons2011-07-231-0/+1
| | | | edition of eqn.
* Ignore `back', `fwd', `up', `down', `mark', and `lineup'.Kristaps Dzonsons2011-07-231-3/+29
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* Add matrix support. Also remove "above" notion, as all elements in aKristaps Dzonsons2011-07-231-1/+56
| | | | list are delimited by their "aboveness" and it's superfluous.
* The circumflex is also a special space character.Kristaps Dzonsons2011-07-231-1/+2
| | | | | Note this and clean up some documentation in eqn.7. Also add some version notes, although I'm not ready for a release yet.
* Check for and throw away `gfont' eqn macros.Kristaps Dzonsons2011-07-221-1/+16
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* Add support for `gsize' eqn token (introduced in second-edition troff).Kristaps Dzonsons2011-07-221-11/+31
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* Add all rendered symbols used by eqn. I use the Second-Edition User'sKristaps Dzonsons2011-07-221-42/+87
| | | | | Manual (1978) for this, so it should catch most of them. They just map into the mandoc_char escaped characters.
* Support translating Greek characters in eqn.Kristaps Dzonsons2011-07-221-0/+94
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* Fix left/right nesting in eqn.Kristaps Dzonsons2011-07-221-3/+7
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* Protect macro expansion.Kristaps Dzonsons2011-07-221-1/+1
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* Use a macro instead of doing a string-fragment compare. I just getKristaps Dzonsons2011-07-221-28/+23
| | | | | | worried that I'm going to write the wrong size on both sides of the equality (I've already done it a few times). This cleans up the code readability a bit.
* Give lists their own eqn function.Kristaps Dzonsons2011-07-221-35/+50
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* Accomodate for hard-spaces with tildes. For now, consider them regularKristaps Dzonsons2011-07-221-4/+16
| | | | | | spaces. Also allow for tabs. Finally, have the parser correctly handle open and close brackets smooshed against other terms. All of these handle "details" noted in the CACM paper.
* Fix eqn handling of PILE clauses (multiple ABOVE statements may beKristaps Dzonsons2011-07-211-17/+14
| | | | specified for each PILE).
* Complete eqn.7 parsing. Features all productions from the original 1975Kristaps Dzonsons2011-07-211-116/+231
| | | | | | | | CACM paper in an LR(1) parse (1 -> eqn_rewind()). Right now the code is a little jungly, but will clear up as I consolidate parse components. The AST structure will also be cleaned up, as right now it's pretty ad hoc (this won't change the parse itself). I added the mandoc_strndup() function will here.
* Support `size' constructs in eqn.7. Generalise mandoc_strontou to thisKristaps Dzonsons2011-07-211-2/+12
| | | | effect.
* Full support for eqn positionals (above, over, sup, sub, etc.).Kristaps Dzonsons2011-07-211-2/+21
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* Add eqn subexpression fonts.Kristaps Dzonsons2011-07-211-12/+31
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* Add support for markers. These decorate the last box: see eqn.7.Kristaps Dzonsons2011-07-211-5/+33
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* Support nested `{, }' subexpressions in eqn. Document in code.Kristaps Dzonsons2011-07-211-10/+49
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* Make `undef' not expand its argument before undefining it. DocumentKristaps Dzonsons2011-07-211-15/+21
| | | | this and have the same behaviour apply to `set' and `define'.
* Flip eqn into using parsed nodes. I've temporarily disabled printingKristaps Dzonsons2011-07-211-31/+64
| | | | | | | these in the front-ends except for -Ttree, which will display the parsed tree. While here, fix that quoted strings aren't scanned for replacement parts.
* Finish the eqn syntactic parser. This correctly parses terms and doesKristaps Dzonsons2011-07-211-184/+180
| | | | | | | the proper `define' dance, which amounts to pure word-replace (you can, say, define `foo' as `define' then define `define' as something else). eqn.c is now ready for some semantic parsing of `box' and `eqn' productions as defined by the grammar.
* Definitions in eqn.7 are actually recursive. Do this and add crudeKristaps Dzonsons2011-07-181-7/+29
| | | | protection that we don't nest back to ourselves.
* Fix lost allocation.Kristaps Dzonsons2011-07-171-2/+0
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* Remember to NULL-ify new keys/vals.Kristaps Dzonsons2011-07-171-0/+1
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* Provide implementations of `define', `set', and `unset'.Kristaps Dzonsons2011-07-171-55/+196
| | | | | | Tie them into the stream of data. Document these appropriate, bringing in the grammar as defined by the original eqn manual (Kernighan/Richie).
* Warn if equation `define' key is quoted (groff-ism).Kristaps Dzonsons2011-07-171-4/+16
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* Add initial `define' support for eqn(7).Kristaps Dzonsons2011-07-171-6/+111
| | | | | | | | | This works by iterating over a simple list. It's a slow, auditable early implementation. Data is read (the reading function will be reused) then parsed, then the line re-run if remaining stuff exists. Note this function isn't the same as mandoc_getarg(), as eqn(7) uses a different system for reading quoted strings. This doesn't actually use the defines.
* Have equation be allocated with mparse. Will be needed for logging ofKristaps Dzonsons2011-07-121-1/+3
| | | | messages.
* Step 1 of restructuring: libmandoc.h. Move all compiler-set-specificKristaps Dzonsons2011-03-221-1/+0
| | | | | | | | | | stuff into libmandoc.h, including old mdoc.h/man.h/roff.h functions now used by read.c. The motivation behind this is to tighten the relationship between the underlying compilers while keeping parse data hidden from general callers (e.g., main.c). While here, also move register values from mandoc.h into libmandoc.h as noted by schwarze@. See above for explanation.
* Make lint shut up a little bit.Kristaps Dzonsons2011-03-151-0/+1
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* Allow EQN data to be pushed down into libmdoc via mdoc_addeqn(). OnlyKristaps Dzonsons2011-02-091-2/+2
| | | | the adding itself is implemented; equation data is not yet shown.
* Add initial EQN support to mandoc. This parses, then throws away, dataKristaps Dzonsons2011-02-061-0/+81
between EQ and EN roff blocks. EQN is different from TBL in that data after .EQ is unilaterally considered an equation until an .EN. Thus, there's no need to jump through hoops in having table spans and so on. This is ONLY the parse code framework in libroff. EQN is not yet passed into the backends.
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