tslug.h - plan9port - [fork] Plan 9 from user space
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tslug.h (2412B)
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1 enum slugtypes {
2 NONE, // can't happen
3 VBOX, // Vertical Box -- printable stuff
4 SP, // paddable SPace
5 BS, // start Breakable Stream
6 US, // start Unbreakable Stream
7 BF, // start Breakable Float
8 UF, // start Unbreakable Float
9 PT, // start Page Top material (header)
10 BT, // start page BoTtom material (footer)
11 END, // ENDs of groups
12 NEUTRAL, // NEUTRALized slugs can do no harm (cf. CIA)
13 PAGE, // beginning of PAGE in troff input
14 TM, // Terminal Message to appear during output
15 COORD, // output page COORDinates
16 NE, // NEed command
17 MC, // Multiple-Column command
18 CMD, // misc CoMmanDs: FC, FL, BP
19 PARM, // misc PARaMeters: NP, FO
20 LASTTYPE // can't happen either
21 };
22
23 enum cmdtypes {
24 FC, // Freeze 2-Column material
25 FL, // FLush all floats before reading more stream
26 BP // Break Page
27 };
28
29 enum parmtypes {
30 NP, // distance of top margin from page top (New Page)
31 FO, // distance of bottom margin from page top (FOoter)
32 PL, // distance of physical page bottom from page top (Page Length)
33 MF, // minimum fullness required for padding
34 CT, // tolerance for division into two columns
35 WARN, // warnings to stderr?
36 DBG // debugging flag
37 };
38
39 class slug {
40 int serialnum;
41 int dp; // offset of data for this slug in inbuf
42 int linenum; // input line number (approx) for this slug
43 short font; // font in effect at slug beginning
44 short size; // size in effect at slug beginning
45 short seen; // 0 until output
46 short ncol; // number of columns (1 or 2)
47 short offset; // horizontal offset for 2 columns
48 public:
49 short type; // VBOX, PP, etc.
50 short parm; // parameter
51 short base; // "depth" of this slug (from n command)
52 int hpos; // abs horizontal position
53 int dv; // height of this slug above its input Vpos
54 union {
55 int ht; // "height" of this slug (from n command)
56 int parm2; // second parameter, since only VBOXes have ht
57 };
58 friend slug getslug(FILE *);
59 friend void checkout();
60 friend slug eofslug();
61 void coalesce(); // with next slug in array slugs[]
62 void neutralize(); // render this one a no-op
63 void dump(); // dump its contents for debugging
64 char *headstr(); // string value of text
65 void slugout(int); // add the slug to the output
66 char *typename(); // printable slug type
67 int serialno() { return serialnum; }
68 int numcol() { return ncol; }
69 int lineno() { return linenum; }
70 };
71
72 // functions in slug.c
73 slug eofslug();
74 slug getslug(FILE *);